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63d21b0287
This is part of the old iframe and plugin system, we don't need it. R=ojan@chromium.org Review URL: https://codereview.chromium.org/682263003
2842 lines
109 KiB
C++
2842 lines
109 KiB
C++
/*
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* Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
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* Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
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* Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "core/page/EventHandler.h"
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#include "bindings/core/v8/ExceptionStatePlaceholder.h"
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#include "core/HTMLNames.h"
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#include "core/dom/Document.h"
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#include "core/dom/DocumentMarkerController.h"
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#include "core/dom/NodeRenderingTraversal.h"
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#include "core/dom/TouchList.h"
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#include "core/dom/shadow/ShadowRoot.h"
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#include "core/editing/Editor.h"
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#include "core/editing/FrameSelection.h"
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#include "core/editing/TextIterator.h"
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#include "core/editing/htmlediting.h"
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#include "core/events/DOMWindowEventQueue.h"
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#include "core/events/EventPath.h"
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#include "core/events/KeyboardEvent.h"
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#include "core/events/MouseEvent.h"
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#include "core/events/TextEvent.h"
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#include "core/events/TouchEvent.h"
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#include "core/events/WheelEvent.h"
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#include "core/fetch/ImageResource.h"
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#include "core/frame/EventHandlerRegistry.h"
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#include "core/frame/FrameView.h"
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#include "core/frame/LocalFrame.h"
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#include "core/frame/Settings.h"
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#include "core/loader/FrameLoaderClient.h"
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#include "core/page/AutoscrollController.h"
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#include "core/page/Chrome.h"
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#include "core/page/ChromeClient.h"
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#include "core/page/EditorClient.h"
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#include "core/page/EventWithHitTestResults.h"
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#include "core/page/FocusController.h"
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#include "core/page/Page.h"
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#include "core/page/TouchAdjustment.h"
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#include "core/rendering/HitTestRequest.h"
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#include "core/rendering/HitTestResult.h"
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#include "core/rendering/RenderLayer.h"
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#include "core/rendering/RenderView.h"
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#include "core/rendering/style/RenderStyle.h"
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#include "platform/PlatformGestureEvent.h"
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#include "platform/PlatformKeyboardEvent.h"
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#include "platform/PlatformTouchEvent.h"
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#include "platform/PlatformWheelEvent.h"
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#include "platform/RuntimeEnabledFeatures.h"
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#include "platform/TraceEvent.h"
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#include "platform/WindowsKeyboardCodes.h"
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#include "platform/geometry/FloatPoint.h"
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#include "platform/graphics/Image.h"
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#include "platform/heap/Handle.h"
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#include "platform/scroll/ScrollAnimator.h"
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#include "platform/scroll/Scrollbar.h"
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#include "wtf/Assertions.h"
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#include "wtf/CurrentTime.h"
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#include "wtf/StdLibExtras.h"
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#include "wtf/TemporaryChange.h"
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namespace blink {
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// The amount of time to wait before sending a fake mouse event, triggered
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// during a scroll. The short interval is used if the content responds to the mouse events quickly enough,
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// otherwise the long interval is used.
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static const double fakeMouseMoveShortInterval = 0.1;
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static const double fakeMouseMoveLongInterval = 0.250;
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// The amount of time to wait for a cursor update on style and layout changes
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// Set to 50Hz, no need to be faster than common screen refresh rate
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static const double cursorUpdateInterval = 0.02;
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static const int maximumCursorSize = 128;
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// It's pretty unlikely that a scale of less than one would ever be used. But all we really
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// need to ensure here is that the scale isn't so small that integer overflow can occur when
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// dividing cursor sizes (limited above) by the scale.
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static const double minimumCursorScale = 0.001;
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// The minimum amount of time an element stays active after a ShowPress
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// This is roughly 9 frames, which should be long enough to be noticeable.
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static const double minimumActiveInterval = 0.15;
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enum NoCursorChangeType { NoCursorChange };
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class OptionalCursor {
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public:
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OptionalCursor(NoCursorChangeType) : m_isCursorChange(false) { }
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OptionalCursor(const Cursor& cursor) : m_isCursorChange(true), m_cursor(cursor) { }
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bool isCursorChange() const { return m_isCursorChange; }
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const Cursor& cursor() const { ASSERT(m_isCursorChange); return m_cursor; }
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private:
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bool m_isCursorChange;
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Cursor m_cursor;
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};
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class MaximumDurationTracker {
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public:
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explicit MaximumDurationTracker(double *maxDuration)
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: m_maxDuration(maxDuration)
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, m_start(monotonicallyIncreasingTime())
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{
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}
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~MaximumDurationTracker()
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{
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*m_maxDuration = max(*m_maxDuration, monotonicallyIncreasingTime() - m_start);
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}
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private:
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double* m_maxDuration;
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double m_start;
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};
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static inline ScrollGranularity wheelGranularityToScrollGranularity(unsigned deltaMode)
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{
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switch (deltaMode) {
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case WheelEvent::DOM_DELTA_PAGE:
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return ScrollByPage;
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case WheelEvent::DOM_DELTA_LINE:
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return ScrollByLine;
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case WheelEvent::DOM_DELTA_PIXEL:
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return ScrollByPixel;
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default:
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return ScrollByPixel;
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}
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}
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EventHandler::EventHandler(LocalFrame* frame)
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: m_frame(frame)
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, m_mousePressed(false)
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, m_capturesDragging(false)
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, m_mouseDownMayStartSelect(false)
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, m_mouseDownMayStartDrag(false)
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, m_mouseDownWasSingleClickInSelection(false)
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, m_selectionInitiationState(HaveNotStartedSelection)
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, m_hoverTimer(this, &EventHandler::hoverTimerFired)
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, m_cursorUpdateTimer(this, &EventHandler::cursorUpdateTimerFired)
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, m_mouseDownMayStartAutoscroll(false)
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, m_fakeMouseMoveEventTimer(this, &EventHandler::fakeMouseMoveEventTimerFired)
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, m_resizeScrollableArea(0)
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, m_eventHandlerWillResetCapturingMouseEventsNode(0)
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, m_clickCount(0)
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, m_shouldOnlyFireDragOverEvent(false)
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, m_mousePositionIsUnknown(true)
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, m_mouseDownTimestamp(0)
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, m_widgetIsLatched(false)
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, m_touchPressed(false)
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, m_scrollGestureHandlingNode(nullptr)
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, m_lastGestureScrollOverWidget(false)
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, m_maxMouseMovedDuration(0)
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, m_didStartDrag(false)
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, m_activeIntervalTimer(this, &EventHandler::activeIntervalTimerFired)
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, m_lastShowPressTimestamp(0)
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{
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}
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EventHandler::~EventHandler()
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{
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ASSERT(!m_fakeMouseMoveEventTimer.isActive());
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}
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void EventHandler::trace(Visitor* visitor)
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{
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#if ENABLE(OILPAN)
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visitor->trace(m_mousePressNode);
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visitor->trace(m_capturingMouseEventsNode);
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visitor->trace(m_nodeUnderMouse);
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visitor->trace(m_lastNodeUnderMouse);
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visitor->trace(m_clickNode);
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visitor->trace(m_dragTarget);
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visitor->trace(m_latchedWheelEventNode);
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visitor->trace(m_previousWheelScrolledNode);
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visitor->trace(m_targetForTouchID);
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visitor->trace(m_touchSequenceDocument);
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visitor->trace(m_scrollGestureHandlingNode);
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visitor->trace(m_previousGestureScrolledNode);
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visitor->trace(m_lastDeferredTapElement);
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#endif
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}
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void EventHandler::clear()
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{
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m_hoverTimer.stop();
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m_cursorUpdateTimer.stop();
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m_fakeMouseMoveEventTimer.stop();
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m_activeIntervalTimer.stop();
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m_resizeScrollableArea = 0;
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m_nodeUnderMouse = nullptr;
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m_lastNodeUnderMouse = nullptr;
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m_lastScrollbarUnderMouse = nullptr;
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m_clickCount = 0;
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m_clickNode = nullptr;
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m_dragTarget = nullptr;
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m_shouldOnlyFireDragOverEvent = false;
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m_mousePositionIsUnknown = true;
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m_lastKnownMousePosition = IntPoint();
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m_lastKnownMouseGlobalPosition = IntPoint();
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m_lastMouseDownUserGestureToken.clear();
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m_mousePressNode = nullptr;
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m_mousePressed = false;
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m_capturesDragging = false;
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m_capturingMouseEventsNode = nullptr;
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m_latchedWheelEventNode = nullptr;
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m_previousWheelScrolledNode = nullptr;
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m_targetForTouchID.clear();
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m_touchSequenceDocument.clear();
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m_touchSequenceUserGestureToken.clear();
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m_scrollGestureHandlingNode = nullptr;
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m_lastGestureScrollOverWidget = false;
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m_previousGestureScrolledNode = nullptr;
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m_scrollbarHandlingScrollGesture = nullptr;
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m_maxMouseMovedDuration = 0;
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m_didStartDrag = false;
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m_touchPressed = false;
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m_mouseDownMayStartSelect = false;
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m_mouseDownMayStartDrag = false;
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m_lastShowPressTimestamp = 0;
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m_lastDeferredTapElement = nullptr;
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}
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void EventHandler::nodeWillBeRemoved(Node& nodeToBeRemoved)
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{
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if (!nodeToBeRemoved.containsIncludingShadowDOM(m_clickNode.get()))
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return;
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if (nodeToBeRemoved.isInShadowTree()) {
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m_clickNode = nodeToBeRemoved.parentOrShadowHostNode();
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} else {
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// We don't dispatch click events if the mousedown node is removed
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// before a mouseup event. It is compatible with IE and Firefox.
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m_clickNode = nullptr;
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}
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}
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static void setSelectionIfNeeded(FrameSelection& selection, const VisibleSelection& newSelection)
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{
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if (selection.selection() != newSelection)
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selection.setSelection(newSelection);
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}
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static inline bool dispatchSelectStart(Node* node)
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{
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if (!node || !node->renderer())
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return true;
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return node->dispatchEvent(Event::createCancelableBubble(EventTypeNames::selectstart));
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}
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static VisibleSelection expandSelectionToRespectUserSelectAll(Node* targetNode, const VisibleSelection& selection)
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{
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Node* rootUserSelectAll = Position::rootUserSelectAllForNode(targetNode);
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if (!rootUserSelectAll)
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return selection;
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VisibleSelection newSelection(selection);
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newSelection.setBase(positionBeforeNode(rootUserSelectAll).upstream(CanCrossEditingBoundary));
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newSelection.setExtent(positionAfterNode(rootUserSelectAll).downstream(CanCrossEditingBoundary));
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return newSelection;
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}
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bool EventHandler::updateSelectionForMouseDownDispatchingSelectStart(Node* targetNode, const VisibleSelection& selection, TextGranularity granularity)
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{
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if (Position::nodeIsUserSelectNone(targetNode))
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return false;
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if (!dispatchSelectStart(targetNode))
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return false;
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if (selection.isRange())
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m_selectionInitiationState = ExtendedSelection;
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else {
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granularity = CharacterGranularity;
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m_selectionInitiationState = PlacedCaret;
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}
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m_frame->selection().setNonDirectionalSelectionIfNeeded(selection, granularity);
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return true;
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}
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void EventHandler::selectClosestWordFromHitTestResult(const HitTestResult& result, AppendTrailingWhitespace appendTrailingWhitespace)
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{
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Node* innerNode = result.targetNode();
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VisibleSelection newSelection;
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if (innerNode && innerNode->renderer()) {
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VisiblePosition pos(innerNode->renderer()->positionForPoint(result.localPoint()));
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if (pos.isNotNull()) {
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newSelection = VisibleSelection(pos);
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newSelection.expandUsingGranularity(WordGranularity);
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}
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if (appendTrailingWhitespace == ShouldAppendTrailingWhitespace && newSelection.isRange())
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newSelection.appendTrailingWhitespace();
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updateSelectionForMouseDownDispatchingSelectStart(innerNode, expandSelectionToRespectUserSelectAll(innerNode, newSelection), WordGranularity);
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}
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}
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void EventHandler::selectClosestMisspellingFromHitTestResult(const HitTestResult& result, AppendTrailingWhitespace appendTrailingWhitespace)
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{
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Node* innerNode = result.targetNode();
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VisibleSelection newSelection;
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if (innerNode && innerNode->renderer()) {
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VisiblePosition pos(innerNode->renderer()->positionForPoint(result.localPoint()));
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Position start = pos.deepEquivalent();
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Position end = pos.deepEquivalent();
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if (pos.isNotNull()) {
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DocumentMarkerVector markers = innerNode->document().markers().markersInRange(makeRange(pos, pos).get(), DocumentMarker::MisspellingMarkers());
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if (markers.size() == 1) {
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start.moveToOffset(markers[0]->startOffset());
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end.moveToOffset(markers[0]->endOffset());
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newSelection = VisibleSelection(start, end);
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}
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}
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if (appendTrailingWhitespace == ShouldAppendTrailingWhitespace && newSelection.isRange())
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newSelection.appendTrailingWhitespace();
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updateSelectionForMouseDownDispatchingSelectStart(innerNode, expandSelectionToRespectUserSelectAll(innerNode, newSelection), WordGranularity);
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}
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}
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void EventHandler::selectClosestWordFromMouseEvent(const MouseEventWithHitTestResults& result)
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{
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if (m_mouseDownMayStartSelect) {
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selectClosestWordFromHitTestResult(result.hitTestResult(), DontAppendTrailingWhitespace);
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}
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}
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void EventHandler::selectClosestMisspellingFromMouseEvent(const MouseEventWithHitTestResults& result)
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{
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if (m_mouseDownMayStartSelect) {
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selectClosestMisspellingFromHitTestResult(result.hitTestResult(), DontAppendTrailingWhitespace);
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}
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}
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void EventHandler::selectClosestWordOrLinkFromMouseEvent(const MouseEventWithHitTestResults& result)
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{
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if (!result.hitTestResult().isLiveLink())
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return selectClosestWordFromMouseEvent(result);
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Node* innerNode = result.targetNode();
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if (innerNode && innerNode->renderer() && m_mouseDownMayStartSelect) {
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VisibleSelection newSelection;
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Element* URLElement = result.hitTestResult().URLElement();
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VisiblePosition pos(innerNode->renderer()->positionForPoint(result.localPoint()));
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if (pos.isNotNull() && pos.deepEquivalent().deprecatedNode()->isDescendantOf(URLElement))
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newSelection = VisibleSelection::selectionFromContentsOfNode(URLElement);
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updateSelectionForMouseDownDispatchingSelectStart(innerNode, expandSelectionToRespectUserSelectAll(innerNode, newSelection), WordGranularity);
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}
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}
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bool EventHandler::handleMousePressEventDoubleClick(const MouseEventWithHitTestResults& event)
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{
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TRACE_EVENT0("blink", "EventHandler::handleMousePressEventDoubleClick");
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if (event.event().button() != LeftButton)
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return false;
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if (m_frame->selection().isRange()) {
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// A double-click when range is already selected
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// should not change the selection. So, do not call
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// selectClosestWordFromMouseEvent, but do set
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// m_beganSelectingText to prevent handleMouseReleaseEvent
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// from setting caret selection.
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m_selectionInitiationState = ExtendedSelection;
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} else {
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selectClosestWordFromMouseEvent(event);
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}
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return true;
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}
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bool EventHandler::handleMousePressEventTripleClick(const MouseEventWithHitTestResults& event)
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{
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TRACE_EVENT0("blink", "EventHandler::handleMousePressEventTripleClick");
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if (event.event().button() != LeftButton)
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return false;
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Node* innerNode = event.targetNode();
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if (!(innerNode && innerNode->renderer() && m_mouseDownMayStartSelect))
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return false;
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VisibleSelection newSelection;
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VisiblePosition pos(innerNode->renderer()->positionForPoint(event.localPoint()));
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if (pos.isNotNull()) {
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newSelection = VisibleSelection(pos);
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newSelection.expandUsingGranularity(ParagraphGranularity);
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}
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return updateSelectionForMouseDownDispatchingSelectStart(innerNode, expandSelectionToRespectUserSelectAll(innerNode, newSelection), ParagraphGranularity);
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}
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static int textDistance(const Position& start, const Position& end)
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{
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RefPtr<Range> range = Range::create(*start.document(), start, end);
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return TextIterator::rangeLength(range.get(), true);
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}
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bool EventHandler::handleMousePressEventSingleClick(const MouseEventWithHitTestResults& event)
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{
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TRACE_EVENT0("blink", "EventHandler::handleMousePressEventSingleClick");
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m_frame->document()->updateLayoutIgnorePendingStylesheets();
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Node* innerNode = event.targetNode();
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if (!(innerNode && innerNode->renderer() && m_mouseDownMayStartSelect))
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return false;
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// Extend the selection if the Shift key is down, unless the click is in a link.
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bool extendSelection = event.event().shiftKey() && !event.isOverLink();
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// Don't restart the selection when the mouse is pressed on an
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// existing selection so we can allow for text dragging.
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LayoutPoint vPoint = event.event().position();
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if (!extendSelection && m_frame->selection().contains(vPoint)) {
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m_mouseDownWasSingleClickInSelection = true;
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return false;
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}
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VisiblePosition visiblePos(innerNode->renderer()->positionForPoint(event.localPoint()));
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if (visiblePos.isNull())
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visiblePos = VisiblePosition(firstPositionInOrBeforeNode(innerNode), DOWNSTREAM);
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Position pos = visiblePos.deepEquivalent();
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VisibleSelection newSelection = m_frame->selection().selection();
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TextGranularity granularity = CharacterGranularity;
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if (extendSelection && newSelection.isCaretOrRange()) {
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VisibleSelection selectionInUserSelectAll(expandSelectionToRespectUserSelectAll(innerNode, VisibleSelection(VisiblePosition(pos))));
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if (selectionInUserSelectAll.isRange()) {
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if (comparePositions(selectionInUserSelectAll.start(), newSelection.start()) < 0)
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pos = selectionInUserSelectAll.start();
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else if (comparePositions(newSelection.end(), selectionInUserSelectAll.end()) < 0)
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pos = selectionInUserSelectAll.end();
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}
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if (!m_frame->editor().behavior().shouldConsiderSelectionAsDirectional()) {
|
|
if (pos.isNotNull()) {
|
|
// See <rdar://problem/3668157> REGRESSION (Mail): shift-click deselects when selection
|
|
// was created right-to-left
|
|
Position start = newSelection.start();
|
|
Position end = newSelection.end();
|
|
int distanceToStart = textDistance(start, pos);
|
|
int distanceToEnd = textDistance(pos, end);
|
|
if (distanceToStart <= distanceToEnd)
|
|
newSelection = VisibleSelection(end, pos);
|
|
else
|
|
newSelection = VisibleSelection(start, pos);
|
|
}
|
|
} else
|
|
newSelection.setExtent(pos);
|
|
|
|
if (m_frame->selection().granularity() != CharacterGranularity) {
|
|
granularity = m_frame->selection().granularity();
|
|
newSelection.expandUsingGranularity(m_frame->selection().granularity());
|
|
}
|
|
} else {
|
|
newSelection = expandSelectionToRespectUserSelectAll(innerNode, VisibleSelection(visiblePos));
|
|
}
|
|
|
|
// Updating the selection is considered side-effect of the event and so it doesn't impact the handled state.
|
|
updateSelectionForMouseDownDispatchingSelectStart(innerNode, newSelection, granularity);
|
|
return false;
|
|
}
|
|
|
|
static inline bool canMouseDownStartSelect(Node* node)
|
|
{
|
|
if (!node || !node->renderer())
|
|
return true;
|
|
|
|
if (!node->canStartSelection())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool EventHandler::handleMousePressEvent(const MouseEventWithHitTestResults& event)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::handleMousePressEvent");
|
|
|
|
cancelFakeMouseMoveEvent();
|
|
|
|
m_frame->document()->updateLayoutIgnorePendingStylesheets();
|
|
|
|
bool singleClick = event.event().clickCount() <= 1;
|
|
|
|
// If we got the event back, that must mean it wasn't prevented,
|
|
// so it's allowed to start a drag or selection if it wasn't in a scrollbar.
|
|
m_mouseDownMayStartSelect = canMouseDownStartSelect(event.targetNode()) && !event.scrollbar();
|
|
|
|
m_mouseDownMayStartDrag = singleClick;
|
|
|
|
m_mouseDownWasSingleClickInSelection = false;
|
|
|
|
m_mouseDown = event.event();
|
|
|
|
if (event.isOverWidget() && passWidgetMouseDownEventToWidget(event))
|
|
return true;
|
|
|
|
// We don't do this at the start of mouse down handling,
|
|
// because we don't want to do it until we know we didn't hit a widget.
|
|
if (singleClick)
|
|
focusDocumentView();
|
|
|
|
Node* innerNode = event.targetNode();
|
|
|
|
m_mousePressNode = innerNode;
|
|
m_dragStartPos = event.event().position();
|
|
|
|
bool swallowEvent = false;
|
|
m_mousePressed = true;
|
|
m_selectionInitiationState = HaveNotStartedSelection;
|
|
|
|
if (event.event().clickCount() == 2)
|
|
swallowEvent = handleMousePressEventDoubleClick(event);
|
|
else if (event.event().clickCount() >= 3)
|
|
swallowEvent = handleMousePressEventTripleClick(event);
|
|
else
|
|
swallowEvent = handleMousePressEventSingleClick(event);
|
|
|
|
m_mouseDownMayStartAutoscroll = m_mouseDownMayStartSelect
|
|
|| (m_mousePressNode && m_mousePressNode->renderBox() && m_mousePressNode->renderBox()->canBeProgramaticallyScrolled());
|
|
|
|
return swallowEvent;
|
|
}
|
|
|
|
bool EventHandler::handleMouseDraggedEvent(const MouseEventWithHitTestResults& event)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::handleMouseDraggedEvent");
|
|
|
|
if (!m_mousePressed)
|
|
return false;
|
|
|
|
Node* targetNode = event.targetNode();
|
|
if (event.event().button() != LeftButton || !targetNode)
|
|
return false;
|
|
|
|
RenderObject* renderer = targetNode->renderer();
|
|
if (!renderer) {
|
|
Node* parent = NodeRenderingTraversal::parent(targetNode);
|
|
if (!parent)
|
|
return false;
|
|
|
|
renderer = parent->renderer();
|
|
if (!renderer || !renderer->isListBox())
|
|
return false;
|
|
}
|
|
|
|
m_mouseDownMayStartDrag = false;
|
|
|
|
if (m_mouseDownMayStartAutoscroll) {
|
|
if (AutoscrollController* controller = autoscrollController()) {
|
|
controller->startAutoscrollForSelection(renderer);
|
|
m_mouseDownMayStartAutoscroll = false;
|
|
}
|
|
}
|
|
|
|
if (m_selectionInitiationState != ExtendedSelection) {
|
|
HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active);
|
|
HitTestResult result(m_mouseDownPos);
|
|
m_frame->document()->renderView()->hitTest(request, result);
|
|
|
|
updateSelectionForMouseDrag(result);
|
|
}
|
|
updateSelectionForMouseDrag(event.hitTestResult());
|
|
return true;
|
|
}
|
|
|
|
void EventHandler::updateSelectionForMouseDrag()
|
|
{
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return;
|
|
RenderView* renderer = m_frame->contentRenderer();
|
|
if (!renderer)
|
|
return;
|
|
|
|
HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::Move);
|
|
HitTestResult result(m_lastKnownMousePosition);
|
|
renderer->hitTest(request, result);
|
|
updateSelectionForMouseDrag(result);
|
|
}
|
|
|
|
void EventHandler::updateSelectionForMouseDrag(const HitTestResult& hitTestResult)
|
|
{
|
|
if (!m_mouseDownMayStartSelect)
|
|
return;
|
|
|
|
Node* target = hitTestResult.targetNode();
|
|
if (!target)
|
|
return;
|
|
|
|
VisiblePosition targetPosition = m_frame->selection().selection().visiblePositionRespectingEditingBoundary(hitTestResult.localPoint(), target);
|
|
// Don't modify the selection if we're not on a node.
|
|
if (targetPosition.isNull())
|
|
return;
|
|
|
|
// Restart the selection if this is the first mouse move. This work is usually
|
|
// done in handleMousePressEvent, but not if the mouse press was on an existing selection.
|
|
VisibleSelection newSelection = m_frame->selection().selection();
|
|
|
|
if (m_selectionInitiationState == HaveNotStartedSelection && !dispatchSelectStart(target))
|
|
return;
|
|
|
|
if (m_selectionInitiationState != ExtendedSelection) {
|
|
// Always extend selection here because it's caused by a mouse drag
|
|
m_selectionInitiationState = ExtendedSelection;
|
|
newSelection = VisibleSelection(targetPosition);
|
|
}
|
|
|
|
if (RuntimeEnabledFeatures::userSelectAllEnabled()) {
|
|
Node* rootUserSelectAllForMousePressNode = Position::rootUserSelectAllForNode(m_mousePressNode.get());
|
|
if (rootUserSelectAllForMousePressNode && rootUserSelectAllForMousePressNode == Position::rootUserSelectAllForNode(target)) {
|
|
newSelection.setBase(positionBeforeNode(rootUserSelectAllForMousePressNode).upstream(CanCrossEditingBoundary));
|
|
newSelection.setExtent(positionAfterNode(rootUserSelectAllForMousePressNode).downstream(CanCrossEditingBoundary));
|
|
} else {
|
|
// Reset base for user select all when base is inside user-select-all area and extent < base.
|
|
if (rootUserSelectAllForMousePressNode && comparePositions(target->renderer()->positionForPoint(hitTestResult.localPoint()), m_mousePressNode->renderer()->positionForPoint(m_dragStartPos)) < 0)
|
|
newSelection.setBase(positionAfterNode(rootUserSelectAllForMousePressNode).downstream(CanCrossEditingBoundary));
|
|
|
|
Node* rootUserSelectAllForTarget = Position::rootUserSelectAllForNode(target);
|
|
if (rootUserSelectAllForTarget && m_mousePressNode->renderer() && comparePositions(target->renderer()->positionForPoint(hitTestResult.localPoint()), m_mousePressNode->renderer()->positionForPoint(m_dragStartPos)) < 0)
|
|
newSelection.setExtent(positionBeforeNode(rootUserSelectAllForTarget).upstream(CanCrossEditingBoundary));
|
|
else if (rootUserSelectAllForTarget && m_mousePressNode->renderer())
|
|
newSelection.setExtent(positionAfterNode(rootUserSelectAllForTarget).downstream(CanCrossEditingBoundary));
|
|
else
|
|
newSelection.setExtent(targetPosition);
|
|
}
|
|
} else {
|
|
newSelection.setExtent(targetPosition);
|
|
}
|
|
|
|
if (m_frame->selection().granularity() != CharacterGranularity)
|
|
newSelection.expandUsingGranularity(m_frame->selection().granularity());
|
|
|
|
m_frame->selection().setNonDirectionalSelectionIfNeeded(newSelection, m_frame->selection().granularity(),
|
|
FrameSelection::AdjustEndpointsAtBidiBoundary);
|
|
}
|
|
|
|
bool EventHandler::handleMouseReleaseEvent(const MouseEventWithHitTestResults& event)
|
|
{
|
|
AutoscrollController* controller = autoscrollController();
|
|
if (controller && controller->autoscrollInProgress())
|
|
stopAutoscroll();
|
|
|
|
// Used to prevent mouseMoveEvent from initiating a drag before
|
|
// the mouse is pressed again.
|
|
m_mousePressed = false;
|
|
m_capturesDragging = false;
|
|
m_mouseDownMayStartDrag = false;
|
|
m_mouseDownMayStartSelect = false;
|
|
m_mouseDownMayStartAutoscroll = false;
|
|
|
|
bool handled = false;
|
|
|
|
// Clear the selection if the mouse didn't move after the last mouse
|
|
// press and it's not a context menu click. We do this so when clicking
|
|
// on the selection, the selection goes away. However, if we are
|
|
// editing, place the caret.
|
|
if (m_mouseDownWasSingleClickInSelection && m_selectionInitiationState != ExtendedSelection
|
|
&& m_dragStartPos == event.event().position()
|
|
&& m_frame->selection().isRange()
|
|
&& event.event().button() != RightButton) {
|
|
VisibleSelection newSelection;
|
|
Node* node = event.targetNode();
|
|
if (node && node->renderer() && node->hasEditableStyle()) {
|
|
VisiblePosition pos = VisiblePosition(node->renderer()->positionForPoint(event.localPoint()));
|
|
newSelection = VisibleSelection(pos);
|
|
}
|
|
|
|
setSelectionIfNeeded(m_frame->selection(), newSelection);
|
|
|
|
handled = true;
|
|
}
|
|
|
|
m_frame->selection().notifyRendererOfSelectionChange(UserTriggered);
|
|
|
|
m_frame->selection().selectFrameElementInParentIfFullySelected();
|
|
|
|
if (event.event().button() == MiddleButton && !event.isOverLink()) {
|
|
// Ignore handled, since we want to paste to where the caret was placed anyway.
|
|
handled = handlePasteGlobalSelection(event.event()) || handled;
|
|
}
|
|
|
|
return handled;
|
|
}
|
|
|
|
AutoscrollController* EventHandler::autoscrollController() const
|
|
{
|
|
if (Page* page = m_frame->page())
|
|
return &page->autoscrollController();
|
|
return 0;
|
|
}
|
|
|
|
HitTestResult EventHandler::hitTestResultAtPoint(const LayoutPoint& point, HitTestRequest::HitTestRequestType hitType, const LayoutSize& padding)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::hitTestResultAtPoint");
|
|
|
|
HitTestResult result(point, padding.height(), padding.width(), padding.height(), padding.width());
|
|
|
|
// RenderView::hitTest causes a layout, and we don't want to hit that until the first
|
|
// layout because until then, there is nothing shown on the screen - the user can't
|
|
// have intentionally clicked on something belonging to this page. Furthermore,
|
|
// mousemove events before the first layout should not lead to a premature layout()
|
|
// happening, which could show a flash of white.
|
|
// See also the similar code in Document::prepareMouseEvent.
|
|
if (!m_frame->contentRenderer() || !m_frame->view() || !m_frame->view()->didFirstLayout())
|
|
return result;
|
|
|
|
// hitTestResultAtPoint is specifically used to hitTest into all frames, thus it always allows child frame content.
|
|
HitTestRequest request(hitType | HitTestRequest::AllowChildFrameContent);
|
|
m_frame->contentRenderer()->hitTest(request, result);
|
|
if (!request.readOnly())
|
|
m_frame->document()->updateHoverActiveState(request, result.innerElement());
|
|
|
|
return result;
|
|
}
|
|
|
|
void EventHandler::stopAutoscroll()
|
|
{
|
|
if (AutoscrollController* controller = autoscrollController())
|
|
controller->stopAutoscroll();
|
|
}
|
|
|
|
Node* EventHandler::mousePressNode() const
|
|
{
|
|
return m_mousePressNode.get();
|
|
}
|
|
|
|
bool EventHandler::scroll(ScrollDirection direction, ScrollGranularity granularity, Node* startNode, Node** stopNode, float delta, IntPoint absolutePoint)
|
|
{
|
|
if (!delta)
|
|
return false;
|
|
|
|
Node* node = startNode;
|
|
|
|
if (!node)
|
|
node = m_frame->document()->focusedElement();
|
|
|
|
if (!node)
|
|
node = m_mousePressNode.get();
|
|
|
|
if (!node || !node->renderer())
|
|
return false;
|
|
|
|
RenderBox* curBox = node->renderer()->enclosingBox();
|
|
while (curBox && !curBox->isRenderView()) {
|
|
// If we're at the stopNode, we should try to scroll it but we shouldn't bubble past it
|
|
bool shouldStopBubbling = stopNode && *stopNode && curBox->node() == *stopNode;
|
|
bool didScroll = curBox->scroll(direction, granularity, delta);
|
|
|
|
if (didScroll && stopNode)
|
|
*stopNode = curBox->node();
|
|
|
|
if (didScroll || shouldStopBubbling) {
|
|
setFrameWasScrolledByUser();
|
|
return true;
|
|
}
|
|
|
|
curBox = curBox->containingBlock();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::bubblingScroll(ScrollDirection direction, ScrollGranularity granularity, Node* startingNode)
|
|
{
|
|
// The layout needs to be up to date to determine if we can scroll. We may be
|
|
// here because of an onLoad event, in which case the final layout hasn't been performed yet.
|
|
m_frame->document()->updateLayoutIgnorePendingStylesheets();
|
|
if (scroll(direction, granularity, startingNode))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
IntPoint EventHandler::lastKnownMousePosition() const
|
|
{
|
|
return m_lastKnownMousePosition;
|
|
}
|
|
|
|
bool EventHandler::useHandCursor(Node* node, bool isOverLink)
|
|
{
|
|
if (!node)
|
|
return false;
|
|
|
|
return isOverLink && !node->hasEditableStyle();
|
|
}
|
|
|
|
void EventHandler::cursorUpdateTimerFired(Timer<EventHandler>*)
|
|
{
|
|
ASSERT(m_frame);
|
|
ASSERT(m_frame->document());
|
|
|
|
updateCursor();
|
|
}
|
|
|
|
void EventHandler::updateCursor()
|
|
{
|
|
if (m_mousePositionIsUnknown)
|
|
return;
|
|
|
|
FrameView* view = m_frame->view();
|
|
if (!view || !view->shouldSetCursor())
|
|
return;
|
|
|
|
RenderView* renderView = view->renderView();
|
|
if (!renderView)
|
|
return;
|
|
|
|
m_frame->document()->updateLayout();
|
|
|
|
HitTestRequest request(HitTestRequest::ReadOnly);
|
|
HitTestResult result(m_lastKnownMousePosition);
|
|
renderView->hitTest(request, result);
|
|
|
|
OptionalCursor optionalCursor = selectCursor(result);
|
|
if (optionalCursor.isCursorChange()) {
|
|
m_currentMouseCursor = optionalCursor.cursor();
|
|
view->setCursor(m_currentMouseCursor);
|
|
}
|
|
}
|
|
|
|
OptionalCursor EventHandler::selectCursor(const HitTestResult& result)
|
|
{
|
|
if (m_resizeScrollableArea && m_resizeScrollableArea->inResizeMode())
|
|
return NoCursorChange;
|
|
|
|
Page* page = m_frame->page();
|
|
if (!page)
|
|
return NoCursorChange;
|
|
|
|
Node* node = result.innerPossiblyPseudoNode();
|
|
if (!node)
|
|
return selectAutoCursor(result, node, iBeamCursor());
|
|
|
|
RenderObject* renderer = node->renderer();
|
|
RenderStyle* style = renderer ? renderer->style() : 0;
|
|
|
|
if (renderer) {
|
|
Cursor overrideCursor;
|
|
switch (renderer->getCursor(roundedIntPoint(result.localPoint()), overrideCursor)) {
|
|
case SetCursorBasedOnStyle:
|
|
break;
|
|
case SetCursor:
|
|
return overrideCursor;
|
|
case DoNotSetCursor:
|
|
return NoCursorChange;
|
|
}
|
|
}
|
|
|
|
if (style && style->cursors()) {
|
|
const CursorList* cursors = style->cursors();
|
|
for (unsigned i = 0; i < cursors->size(); ++i) {
|
|
StyleImage* styleImage = (*cursors)[i].image();
|
|
if (!styleImage)
|
|
continue;
|
|
ImageResource* cachedImage = styleImage->cachedImage();
|
|
if (!cachedImage)
|
|
continue;
|
|
float scale = styleImage->imageScaleFactor();
|
|
// Get hotspot and convert from logical pixels to physical pixels.
|
|
IntPoint hotSpot = (*cursors)[i].hotSpot();
|
|
hotSpot.scale(scale, scale);
|
|
IntSize size = cachedImage->imageForRenderer(renderer)->size();
|
|
if (cachedImage->errorOccurred())
|
|
continue;
|
|
// Limit the size of cursors (in UI pixels) so that they cannot be
|
|
// used to cover UI elements in chrome.
|
|
size.scale(1 / scale);
|
|
if (size.width() > maximumCursorSize || size.height() > maximumCursorSize)
|
|
continue;
|
|
|
|
Image* image = cachedImage->imageForRenderer(renderer);
|
|
// Ensure no overflow possible in calculations above.
|
|
if (scale < minimumCursorScale)
|
|
continue;
|
|
return Cursor(image, hotSpot, scale);
|
|
}
|
|
}
|
|
|
|
switch (style ? style->cursor() : CURSOR_AUTO) {
|
|
case CURSOR_AUTO: {
|
|
bool horizontalText = !style || style->isHorizontalWritingMode();
|
|
const Cursor& iBeam = horizontalText ? iBeamCursor() : verticalTextCursor();
|
|
return selectAutoCursor(result, node, iBeam);
|
|
}
|
|
case CURSOR_CROSS:
|
|
return crossCursor();
|
|
case CURSOR_POINTER:
|
|
return handCursor();
|
|
case CURSOR_MOVE:
|
|
return moveCursor();
|
|
case CURSOR_ALL_SCROLL:
|
|
return moveCursor();
|
|
case CURSOR_E_RESIZE:
|
|
return eastResizeCursor();
|
|
case CURSOR_W_RESIZE:
|
|
return westResizeCursor();
|
|
case CURSOR_N_RESIZE:
|
|
return northResizeCursor();
|
|
case CURSOR_S_RESIZE:
|
|
return southResizeCursor();
|
|
case CURSOR_NE_RESIZE:
|
|
return northEastResizeCursor();
|
|
case CURSOR_SW_RESIZE:
|
|
return southWestResizeCursor();
|
|
case CURSOR_NW_RESIZE:
|
|
return northWestResizeCursor();
|
|
case CURSOR_SE_RESIZE:
|
|
return southEastResizeCursor();
|
|
case CURSOR_NS_RESIZE:
|
|
return northSouthResizeCursor();
|
|
case CURSOR_EW_RESIZE:
|
|
return eastWestResizeCursor();
|
|
case CURSOR_NESW_RESIZE:
|
|
return northEastSouthWestResizeCursor();
|
|
case CURSOR_NWSE_RESIZE:
|
|
return northWestSouthEastResizeCursor();
|
|
case CURSOR_COL_RESIZE:
|
|
return columnResizeCursor();
|
|
case CURSOR_ROW_RESIZE:
|
|
return rowResizeCursor();
|
|
case CURSOR_TEXT:
|
|
return iBeamCursor();
|
|
case CURSOR_WAIT:
|
|
return waitCursor();
|
|
case CURSOR_HELP:
|
|
return helpCursor();
|
|
case CURSOR_VERTICAL_TEXT:
|
|
return verticalTextCursor();
|
|
case CURSOR_CELL:
|
|
return cellCursor();
|
|
case CURSOR_CONTEXT_MENU:
|
|
return contextMenuCursor();
|
|
case CURSOR_PROGRESS:
|
|
return progressCursor();
|
|
case CURSOR_NO_DROP:
|
|
return noDropCursor();
|
|
case CURSOR_ALIAS:
|
|
return aliasCursor();
|
|
case CURSOR_COPY:
|
|
return copyCursor();
|
|
case CURSOR_NONE:
|
|
return noneCursor();
|
|
case CURSOR_NOT_ALLOWED:
|
|
return notAllowedCursor();
|
|
case CURSOR_DEFAULT:
|
|
return pointerCursor();
|
|
case CURSOR_ZOOM_IN:
|
|
return zoomInCursor();
|
|
case CURSOR_ZOOM_OUT:
|
|
return zoomOutCursor();
|
|
case CURSOR_WEBKIT_GRAB:
|
|
return grabCursor();
|
|
case CURSOR_WEBKIT_GRABBING:
|
|
return grabbingCursor();
|
|
}
|
|
return pointerCursor();
|
|
}
|
|
|
|
OptionalCursor EventHandler::selectAutoCursor(const HitTestResult& result, Node* node, const Cursor& iBeam)
|
|
{
|
|
bool editable = (node && node->hasEditableStyle());
|
|
|
|
if (useHandCursor(node, result.isOverLink()))
|
|
return handCursor();
|
|
|
|
bool inResizer = false;
|
|
RenderObject* renderer = node ? node->renderer() : 0;
|
|
if (renderer && m_frame->view()) {
|
|
RenderLayer* layer = renderer->enclosingLayer();
|
|
inResizer = layer->scrollableArea() && layer->scrollableArea()->isPointInResizeControl(result.roundedPointInMainFrame(), ResizerForPointer);
|
|
}
|
|
|
|
// During selection, use an I-beam no matter what we're over.
|
|
// If a drag may be starting or we're capturing mouse events for a particular node, don't treat this as a selection.
|
|
if (m_mousePressed && m_mouseDownMayStartSelect
|
|
&& !m_mouseDownMayStartDrag
|
|
&& m_frame->selection().isCaretOrRange()
|
|
&& !m_capturingMouseEventsNode) {
|
|
return iBeam;
|
|
}
|
|
|
|
if ((editable || (renderer && renderer->isText() && node->canStartSelection())) && !inResizer && !result.scrollbar())
|
|
return iBeam;
|
|
return pointerCursor();
|
|
}
|
|
|
|
static LayoutPoint documentPointForWindowPoint(LocalFrame* frame, const IntPoint& windowPoint)
|
|
{
|
|
// FIXME(sky): remove
|
|
return windowPoint;
|
|
}
|
|
|
|
bool EventHandler::handleMousePressEvent(const PlatformMouseEvent& mouseEvent)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::handleMousePressEvent");
|
|
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
|
|
UserGestureIndicator gestureIndicator(DefinitelyProcessingUserGesture);
|
|
m_frame->eventHandler().m_lastMouseDownUserGestureToken = gestureIndicator.currentToken();
|
|
|
|
cancelFakeMouseMoveEvent();
|
|
if (m_eventHandlerWillResetCapturingMouseEventsNode)
|
|
m_capturingMouseEventsNode = nullptr;
|
|
m_mousePressed = true;
|
|
m_capturesDragging = true;
|
|
setLastKnownMousePosition(mouseEvent);
|
|
m_mouseDownTimestamp = mouseEvent.timestamp();
|
|
m_mouseDownMayStartDrag = false;
|
|
m_mouseDownMayStartSelect = false;
|
|
m_mouseDownMayStartAutoscroll = false;
|
|
if (m_frame->view())
|
|
m_mouseDownPos = mouseEvent.position();
|
|
else {
|
|
// FIXME(sky): Why do we have this else block at all?
|
|
invalidateClick();
|
|
return false;
|
|
}
|
|
|
|
// Mouse events simulated from touch should not hit-test again.
|
|
ASSERT(!mouseEvent.fromTouch());
|
|
|
|
HitTestRequest request(HitTestRequest::Active);
|
|
// Save the document point we generate in case the window coordinate is invalidated by what happens
|
|
// when we dispatch the event.
|
|
LayoutPoint documentPoint = documentPointForWindowPoint(m_frame, mouseEvent.position());
|
|
MouseEventWithHitTestResults mev = m_frame->document()->prepareMouseEvent(request, documentPoint, mouseEvent);
|
|
|
|
if (!mev.targetNode()) {
|
|
invalidateClick();
|
|
return false;
|
|
}
|
|
|
|
m_mousePressNode = mev.targetNode();
|
|
|
|
m_clickCount = mouseEvent.clickCount();
|
|
m_clickNode = mev.targetNode()->isTextNode() ? NodeRenderingTraversal::parent(mev.targetNode()) : mev.targetNode();
|
|
|
|
RenderLayer* layer = mev.targetNode()->renderer() ? mev.targetNode()->renderer()->enclosingLayer() : 0;
|
|
IntPoint p = mouseEvent.position();
|
|
if (layer && layer->scrollableArea() && layer->scrollableArea()->isPointInResizeControl(p, ResizerForPointer)) {
|
|
m_resizeScrollableArea = layer->scrollableArea();
|
|
m_resizeScrollableArea->setInResizeMode(true);
|
|
m_offsetFromResizeCorner = m_resizeScrollableArea->offsetFromResizeCorner(p);
|
|
invalidateClick();
|
|
return true;
|
|
}
|
|
|
|
m_frame->selection().setCaretBlinkingSuspended(true);
|
|
|
|
bool swallowEvent = !dispatchMouseEvent(EventTypeNames::mousedown, mev.targetNode(), m_clickCount, mouseEvent, true);
|
|
swallowEvent = swallowEvent || handleMouseFocus(mouseEvent);
|
|
m_capturesDragging = !swallowEvent || mev.scrollbar();
|
|
|
|
// If the hit testing originally determined the event was in a scrollbar, refetch the MouseEventWithHitTestResults
|
|
// in case the scrollbar widget was destroyed when the mouse event was handled.
|
|
if (mev.scrollbar()) {
|
|
const bool wasLastScrollBar = mev.scrollbar() == m_lastScrollbarUnderMouse.get();
|
|
HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active);
|
|
mev = m_frame->document()->prepareMouseEvent(request, documentPoint, mouseEvent);
|
|
if (wasLastScrollBar && mev.scrollbar() != m_lastScrollbarUnderMouse.get())
|
|
m_lastScrollbarUnderMouse = nullptr;
|
|
}
|
|
|
|
if (swallowEvent) {
|
|
// scrollbars should get events anyway, even disabled controls might be scrollable
|
|
passMousePressEventToScrollbar(mev);
|
|
} else {
|
|
if (passMousePressEventToScrollbar(mev))
|
|
swallowEvent = true;
|
|
else
|
|
swallowEvent = handleMousePressEvent(mev);
|
|
}
|
|
|
|
return swallowEvent;
|
|
}
|
|
|
|
static RenderLayer* layerForNode(Node* node)
|
|
{
|
|
if (!node)
|
|
return 0;
|
|
|
|
RenderObject* renderer = node->renderer();
|
|
if (!renderer)
|
|
return 0;
|
|
|
|
RenderLayer* layer = renderer->enclosingLayer();
|
|
if (!layer)
|
|
return 0;
|
|
|
|
return layer;
|
|
}
|
|
|
|
ScrollableArea* EventHandler::associatedScrollableArea(const RenderLayer* layer) const
|
|
{
|
|
if (RenderLayerScrollableArea* scrollableArea = layer->scrollableArea()) {
|
|
if (scrollableArea->scrollsOverflow())
|
|
return scrollableArea;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool EventHandler::handleMouseMoveEvent(const PlatformMouseEvent& event)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::handleMouseMoveEvent");
|
|
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
MaximumDurationTracker maxDurationTracker(&m_maxMouseMovedDuration);
|
|
|
|
HitTestResult hoveredNode = HitTestResult(LayoutPoint());
|
|
bool result = handleMouseMoveOrLeaveEvent(event, &hoveredNode);
|
|
|
|
Page* page = m_frame->page();
|
|
if (!page)
|
|
return result;
|
|
|
|
if (RenderLayer* layer = layerForNode(hoveredNode.innerNode())) {
|
|
if (ScrollableArea* layerScrollableArea = associatedScrollableArea(layer))
|
|
layerScrollableArea->mouseMovedInContentArea();
|
|
}
|
|
|
|
page->chrome().mouseDidMoveOverElement(hoveredNode, event.modifierFlags());
|
|
page->chrome().setToolTip(hoveredNode);
|
|
|
|
return result;
|
|
}
|
|
|
|
void EventHandler::handleMouseLeaveEvent(const PlatformMouseEvent& event)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::handleMouseLeaveEvent");
|
|
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
handleMouseMoveOrLeaveEvent(event);
|
|
}
|
|
|
|
bool EventHandler::handleMouseMoveOrLeaveEvent(const PlatformMouseEvent& mouseEvent, HitTestResult* hoveredNode, bool onlyUpdateScrollbars)
|
|
{
|
|
ASSERT(m_frame);
|
|
ASSERT(m_frame->view());
|
|
|
|
setLastKnownMousePosition(mouseEvent);
|
|
|
|
if (m_hoverTimer.isActive())
|
|
m_hoverTimer.stop();
|
|
|
|
m_cursorUpdateTimer.stop();
|
|
|
|
cancelFakeMouseMoveEvent();
|
|
|
|
// Send events right to a scrollbar if the mouse is pressed.
|
|
if (m_lastScrollbarUnderMouse && m_mousePressed) {
|
|
m_lastScrollbarUnderMouse->mouseMoved(mouseEvent);
|
|
return true;
|
|
}
|
|
|
|
// Mouse events simulated from touch should not hit-test again.
|
|
ASSERT(!mouseEvent.fromTouch());
|
|
|
|
HitTestRequest::HitTestRequestType hitType = HitTestRequest::Move;
|
|
if (m_mousePressed)
|
|
hitType |= HitTestRequest::Active;
|
|
else if (onlyUpdateScrollbars) {
|
|
// Mouse events should be treated as "read-only" if we're updating only scrollbars. This
|
|
// means that :hover and :active freeze in the state they were in, rather than updating
|
|
// for nodes the mouse moves while the window is not key (which will be the case if
|
|
// onlyUpdateScrollbars is true).
|
|
hitType |= HitTestRequest::ReadOnly;
|
|
}
|
|
|
|
// Treat any mouse move events as readonly if the user is currently touching the screen.
|
|
if (m_touchPressed)
|
|
hitType |= HitTestRequest::Active | HitTestRequest::ReadOnly;
|
|
HitTestRequest request(hitType);
|
|
MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
|
if (hoveredNode)
|
|
*hoveredNode = mev.hitTestResult();
|
|
|
|
Scrollbar* scrollbar = 0;
|
|
|
|
if (m_resizeScrollableArea && m_resizeScrollableArea->inResizeMode())
|
|
m_resizeScrollableArea->resize(mouseEvent, m_offsetFromResizeCorner);
|
|
else {
|
|
scrollbar = mev.scrollbar();
|
|
updateLastScrollbarUnderMouse(scrollbar, !m_mousePressed);
|
|
if (onlyUpdateScrollbars)
|
|
return true;
|
|
}
|
|
|
|
bool swallowEvent = false;
|
|
|
|
if (scrollbar && !m_mousePressed)
|
|
scrollbar->mouseMoved(mouseEvent); // Handle hover effects on platforms that support visual feedback on scrollbar hovering.
|
|
if (FrameView* view = m_frame->view()) {
|
|
OptionalCursor optionalCursor = selectCursor(mev.hitTestResult());
|
|
if (optionalCursor.isCursorChange()) {
|
|
m_currentMouseCursor = optionalCursor.cursor();
|
|
view->setCursor(m_currentMouseCursor);
|
|
}
|
|
}
|
|
|
|
if (swallowEvent)
|
|
return true;
|
|
|
|
swallowEvent = !dispatchMouseEvent(EventTypeNames::mousemove, mev.targetNode(), 0, mouseEvent, true);
|
|
if (!swallowEvent)
|
|
swallowEvent = handleMouseDraggedEvent(mev);
|
|
|
|
return swallowEvent;
|
|
}
|
|
|
|
void EventHandler::invalidateClick()
|
|
{
|
|
m_clickCount = 0;
|
|
m_clickNode = nullptr;
|
|
}
|
|
|
|
static Node* parentForClickEvent(const Node& node)
|
|
{
|
|
// IE doesn't dispatch click events for mousedown/mouseup events across form
|
|
// controls.
|
|
if (node.isHTMLElement() && toHTMLElement(node).isInteractiveContent())
|
|
return 0;
|
|
return NodeRenderingTraversal::parent(&node);
|
|
}
|
|
|
|
bool EventHandler::handleMouseReleaseEvent(const PlatformMouseEvent& mouseEvent)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::handleMouseReleaseEvent");
|
|
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
|
|
m_frame->selection().setCaretBlinkingSuspended(false);
|
|
|
|
OwnPtr<UserGestureIndicator> gestureIndicator;
|
|
|
|
if (m_frame->eventHandler().m_lastMouseDownUserGestureToken)
|
|
gestureIndicator = adoptPtr(new UserGestureIndicator(m_frame->eventHandler().m_lastMouseDownUserGestureToken.release()));
|
|
else
|
|
gestureIndicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingUserGesture));
|
|
|
|
m_mousePressed = false;
|
|
setLastKnownMousePosition(mouseEvent);
|
|
|
|
if (m_lastScrollbarUnderMouse) {
|
|
invalidateClick();
|
|
m_lastScrollbarUnderMouse->mouseUp(mouseEvent);
|
|
bool setUnder = false;
|
|
return !dispatchMouseEvent(EventTypeNames::mouseup, m_lastNodeUnderMouse.get(), m_clickCount, mouseEvent, setUnder);
|
|
}
|
|
|
|
// Mouse events simulated from touch should not hit-test again.
|
|
ASSERT(!mouseEvent.fromTouch());
|
|
|
|
HitTestRequest::HitTestRequestType hitType = HitTestRequest::Release;
|
|
HitTestRequest request(hitType);
|
|
MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
|
if (m_eventHandlerWillResetCapturingMouseEventsNode)
|
|
m_capturingMouseEventsNode = nullptr;
|
|
|
|
bool swallowMouseUpEvent = !dispatchMouseEvent(EventTypeNames::mouseup, mev.targetNode(), m_clickCount, mouseEvent, false);
|
|
|
|
bool swallowClickEvent = false;
|
|
if (m_clickCount > 0 && mev.targetNode() && m_clickNode) {
|
|
if (Node* clickTargetNode = mev.targetNode()->commonAncestor(*m_clickNode, parentForClickEvent))
|
|
swallowClickEvent = !dispatchMouseEvent(EventTypeNames::click, clickTargetNode, m_clickCount, mouseEvent, true);
|
|
}
|
|
|
|
if (m_resizeScrollableArea) {
|
|
m_resizeScrollableArea->setInResizeMode(false);
|
|
m_resizeScrollableArea = 0;
|
|
}
|
|
|
|
bool swallowMouseReleaseEvent = false;
|
|
if (!swallowMouseUpEvent)
|
|
swallowMouseReleaseEvent = handleMouseReleaseEvent(mev);
|
|
|
|
invalidateClick();
|
|
|
|
return swallowMouseUpEvent || swallowClickEvent || swallowMouseReleaseEvent;
|
|
}
|
|
|
|
bool EventHandler::handlePasteGlobalSelection(const PlatformMouseEvent& mouseEvent)
|
|
{
|
|
// If the event was a middle click, attempt to copy global selection in after
|
|
// the newly set caret position.
|
|
//
|
|
// This code is called from either the mouse up or mouse down handling. There
|
|
// is some debate about when the global selection is pasted:
|
|
// xterm: pastes on up.
|
|
// GTK: pastes on down.
|
|
// Qt: pastes on up.
|
|
// Firefox: pastes on up.
|
|
// Chromium: pastes on up.
|
|
//
|
|
// There is something of a webcompat angle to this well, as highlighted by
|
|
// crbug.com/14608. Pages can clear text boxes 'onclick' and, if we paste on
|
|
// down then the text is pasted just before the onclick handler runs and
|
|
// clears the text box. So it's important this happens after the event
|
|
// handlers have been fired.
|
|
if (mouseEvent.type() != PlatformEvent::MouseReleased)
|
|
return false;
|
|
|
|
if (!m_frame->page())
|
|
return false;
|
|
LocalFrame* focusFrame = m_frame->page()->focusController().focusedOrMainFrame();
|
|
// Do not paste here if the focus was moved somewhere else.
|
|
if (m_frame == focusFrame && m_frame->editor().behavior().supportsGlobalSelection())
|
|
return m_frame->editor().command("PasteGlobalSelection").execute();
|
|
|
|
return false;
|
|
}
|
|
|
|
void EventHandler::setCapturingMouseEventsNode(PassRefPtr<Node> n)
|
|
{
|
|
m_capturingMouseEventsNode = n;
|
|
m_eventHandlerWillResetCapturingMouseEventsNode = false;
|
|
}
|
|
|
|
MouseEventWithHitTestResults EventHandler::prepareMouseEvent(const HitTestRequest& request, const PlatformMouseEvent& mev)
|
|
{
|
|
ASSERT(m_frame);
|
|
ASSERT(m_frame->document());
|
|
|
|
return m_frame->document()->prepareMouseEvent(request, documentPointForWindowPoint(m_frame, mev.position()), mev);
|
|
}
|
|
|
|
void EventHandler::updateMouseEventTargetNode(Node* targetNode, const PlatformMouseEvent& mouseEvent, bool fireMouseOverOut)
|
|
{
|
|
Node* result = targetNode;
|
|
|
|
// If we're capturing, we always go right to that node.
|
|
if (m_capturingMouseEventsNode)
|
|
result = m_capturingMouseEventsNode.get();
|
|
else {
|
|
// If the target node is a text node, dispatch on the parent node - rdar://4196646
|
|
if (result && result->isTextNode())
|
|
result = NodeRenderingTraversal::parent(result);
|
|
}
|
|
m_nodeUnderMouse = result;
|
|
|
|
// Fire mouseout/mouseover if the mouse has shifted to a different node.
|
|
if (fireMouseOverOut) {
|
|
RenderLayer* layerForLastNode = layerForNode(m_lastNodeUnderMouse.get());
|
|
RenderLayer* layerForNodeUnderMouse = layerForNode(m_nodeUnderMouse.get());
|
|
Page* page = m_frame->page();
|
|
|
|
if (page && (layerForLastNode && (!layerForNodeUnderMouse || layerForNodeUnderMouse != layerForLastNode))) {
|
|
// The mouse has moved between layers.
|
|
if (ScrollableArea* scrollableAreaForLastNode = associatedScrollableArea(layerForLastNode))
|
|
scrollableAreaForLastNode->mouseExitedContentArea();
|
|
}
|
|
|
|
if (page && (layerForNodeUnderMouse && (!layerForLastNode || layerForNodeUnderMouse != layerForLastNode))) {
|
|
// The mouse has moved between layers.
|
|
if (ScrollableArea* scrollableAreaForNodeUnderMouse = associatedScrollableArea(layerForNodeUnderMouse))
|
|
scrollableAreaForNodeUnderMouse->mouseEnteredContentArea();
|
|
}
|
|
|
|
if (m_lastNodeUnderMouse && m_lastNodeUnderMouse->document() != m_frame->document()) {
|
|
m_lastNodeUnderMouse = nullptr;
|
|
m_lastScrollbarUnderMouse = nullptr;
|
|
}
|
|
|
|
if (m_lastNodeUnderMouse != m_nodeUnderMouse) {
|
|
// send mouseout event to the old node
|
|
if (m_lastNodeUnderMouse)
|
|
m_lastNodeUnderMouse->dispatchMouseEvent(mouseEvent, EventTypeNames::mouseout, 0, m_nodeUnderMouse.get());
|
|
// send mouseover event to the new node
|
|
if (m_nodeUnderMouse)
|
|
m_nodeUnderMouse->dispatchMouseEvent(mouseEvent, EventTypeNames::mouseover, 0, m_lastNodeUnderMouse.get());
|
|
}
|
|
m_lastNodeUnderMouse = m_nodeUnderMouse;
|
|
}
|
|
}
|
|
|
|
// The return value means 'continue default handling.'
|
|
bool EventHandler::dispatchMouseEvent(const AtomicString& eventType, Node* targetNode, int clickCount, const PlatformMouseEvent& mouseEvent, bool setUnder)
|
|
{
|
|
updateMouseEventTargetNode(targetNode, mouseEvent, setUnder);
|
|
return !m_nodeUnderMouse || m_nodeUnderMouse->dispatchMouseEvent(mouseEvent, eventType, clickCount);
|
|
}
|
|
|
|
// The return value means 'swallow event' (was handled), as for other handle* functions.
|
|
bool EventHandler::handleMouseFocus(const PlatformMouseEvent& mouseEvent)
|
|
{
|
|
// The layout needs to be up to date to determine if an element is focusable.
|
|
m_frame->document()->updateLayoutIgnorePendingStylesheets();
|
|
|
|
Element* element = 0;
|
|
if (m_nodeUnderMouse)
|
|
element = m_nodeUnderMouse->isElementNode() ? toElement(m_nodeUnderMouse) : m_nodeUnderMouse->parentOrShadowHostElement();
|
|
for (; element; element = element->parentOrShadowHostElement()) {
|
|
if (element->isFocusable() && element->focused())
|
|
return false;
|
|
if (element->isMouseFocusable())
|
|
break;
|
|
}
|
|
ASSERT(!element || element->isMouseFocusable());
|
|
|
|
// To fix <rdar://problem/4895428> Can't drag selected ToDo, we don't focus
|
|
// a node on mouse down if it's selected and inside a focused node. It will
|
|
// be focused if the user does a mouseup over it, however, because the
|
|
// mouseup will set a selection inside it, which will call
|
|
// FrameSelection::setFocusedNodeIfNeeded.
|
|
if (element
|
|
&& m_frame->selection().isRange()
|
|
&& m_frame->selection().toNormalizedRange()->compareNode(element, IGNORE_EXCEPTION) == Range::NODE_INSIDE
|
|
&& element->isDescendantOf(m_frame->document()->focusedElement()))
|
|
return false;
|
|
|
|
// Only change the focus when clicking scrollbars if it can transfered to a
|
|
// mouse focusable node.
|
|
if (!element && isInsideScrollbar(mouseEvent.position()))
|
|
return true;
|
|
|
|
if (Page* page = m_frame->page()) {
|
|
// If focus shift is blocked, we eat the event. Note we should never
|
|
// clear swallowEvent if the page already set it (e.g., by canceling
|
|
// default behavior).
|
|
if (element) {
|
|
if (!page->focusController().setFocusedElement(element, m_frame, FocusTypeMouse))
|
|
return true;
|
|
} else {
|
|
// We call setFocusedElement even with !element in order to blur
|
|
// current focus element when a link is clicked; this is expected by
|
|
// some sites that rely on onChange handlers running from form
|
|
// fields before the button click is processed.
|
|
if (!page->focusController().setFocusedElement(0, m_frame))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::isInsideScrollbar(const IntPoint& windowPoint) const
|
|
{
|
|
if (RenderView* renderView = m_frame->contentRenderer()) {
|
|
HitTestRequest request(HitTestRequest::ReadOnly);
|
|
HitTestResult result(windowPoint);
|
|
renderView->hitTest(request, result);
|
|
return result.scrollbar();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::handleWheelEvent(const PlatformWheelEvent& event)
|
|
{
|
|
#define RETURN_WHEEL_EVENT_HANDLED() \
|
|
{ \
|
|
setFrameWasScrolledByUser(); \
|
|
return true; \
|
|
}
|
|
|
|
Document* doc = m_frame->document();
|
|
|
|
if (!doc->renderView())
|
|
return false;
|
|
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return false;
|
|
|
|
LayoutPoint vPoint = event.position();
|
|
|
|
HitTestRequest request(HitTestRequest::ReadOnly);
|
|
HitTestResult result(vPoint);
|
|
doc->renderView()->hitTest(request, result);
|
|
|
|
Node* node = result.innerNode();
|
|
// Wheel events should not dispatch to text nodes.
|
|
if (node && node->isTextNode())
|
|
node = NodeRenderingTraversal::parent(node);
|
|
|
|
bool isOverWidget;
|
|
if (event.useLatchedEventNode()) {
|
|
if (!m_latchedWheelEventNode) {
|
|
m_latchedWheelEventNode = node;
|
|
m_widgetIsLatched = result.isOverWidget();
|
|
} else
|
|
node = m_latchedWheelEventNode.get();
|
|
|
|
isOverWidget = m_widgetIsLatched;
|
|
} else {
|
|
if (m_latchedWheelEventNode)
|
|
m_latchedWheelEventNode = nullptr;
|
|
if (m_previousWheelScrolledNode)
|
|
m_previousWheelScrolledNode = nullptr;
|
|
|
|
isOverWidget = result.isOverWidget();
|
|
}
|
|
|
|
if (node) {
|
|
if (node && !node->dispatchWheelEvent(event))
|
|
RETURN_WHEEL_EVENT_HANDLED();
|
|
}
|
|
|
|
// We do another check on the frame view because the event handler can run JS which results in the frame getting destroyed.
|
|
view = m_frame->view();
|
|
if (!view || !view->wheelEvent(event))
|
|
return false;
|
|
|
|
RETURN_WHEEL_EVENT_HANDLED();
|
|
|
|
#undef RETURN_WHEEL_EVENT_HANDLED
|
|
}
|
|
|
|
void EventHandler::defaultWheelEventHandler(Node* startNode, WheelEvent* wheelEvent)
|
|
{
|
|
if (!startNode || !wheelEvent)
|
|
return;
|
|
|
|
// Ctrl + scrollwheel is reserved for triggering zoom in/out actions in Chromium.
|
|
if (wheelEvent->ctrlKey())
|
|
return;
|
|
|
|
Node* stopNode = m_previousWheelScrolledNode.get();
|
|
ScrollGranularity granularity = wheelGranularityToScrollGranularity(wheelEvent->deltaMode());
|
|
|
|
// Break up into two scrolls if we need to. Diagonal movement on
|
|
// a MacBook pro is an example of a 2-dimensional mouse wheel event (where both deltaX and deltaY can be set).
|
|
if (scroll(ScrollRight, granularity, startNode, &stopNode, wheelEvent->deltaX(), roundedIntPoint(wheelEvent->absoluteLocation())))
|
|
wheelEvent->setDefaultHandled();
|
|
|
|
if (scroll(ScrollDown, granularity, startNode, &stopNode, wheelEvent->deltaY(), roundedIntPoint(wheelEvent->absoluteLocation())))
|
|
wheelEvent->setDefaultHandled();
|
|
|
|
if (!m_latchedWheelEventNode)
|
|
m_previousWheelScrolledNode = stopNode;
|
|
}
|
|
|
|
bool EventHandler::handleGestureShowPress()
|
|
{
|
|
m_lastShowPressTimestamp = WTF::currentTime();
|
|
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return false;
|
|
const FrameView::ScrollableAreaSet* areas = view->scrollableAreas();
|
|
if (!areas)
|
|
return false;
|
|
for (FrameView::ScrollableAreaSet::const_iterator it = areas->begin(); it != areas->end(); ++it) {
|
|
ScrollableArea* sa = *it;
|
|
ScrollAnimator* animator = sa->existingScrollAnimator();
|
|
if (animator)
|
|
animator->cancelAnimations();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::handleGestureEvent(const PlatformGestureEvent& gestureEvent)
|
|
{
|
|
TRACE_EVENT0("input", "EventHandler::handleGestureEvent");
|
|
|
|
// Scrolling-related gesture events invoke EventHandler recursively for each frame down
|
|
// the chain, doing a single-frame hit-test per frame. This matches handleWheelEvent.
|
|
// Perhaps we could simplify things by rewriting scroll handling to work inner frame
|
|
// out, and then unify with other gesture events.
|
|
if (gestureEvent.isScrollEvent())
|
|
return handleGestureScrollEvent(gestureEvent);
|
|
|
|
// Non-scrolling related gesture events instead do a single cross-frame hit-test and
|
|
// jump directly to the inner most frame. This matches handleMousePressEvent etc.
|
|
|
|
// Hit test across all frames and do touch adjustment as necessary for the event type.
|
|
GestureEventWithHitTestResults targetedEvent = targetGestureEvent(gestureEvent);
|
|
|
|
// Route to the correct frame.
|
|
if (LocalFrame* innerFrame = targetedEvent.hitTestResult().innerNodeFrame())
|
|
return innerFrame->eventHandler().handleGestureEventInFrame(targetedEvent);
|
|
|
|
// No hit test result, handle in root instance. Perhaps we should just return false instead?
|
|
return handleGestureEventInFrame(targetedEvent);
|
|
}
|
|
|
|
bool EventHandler::handleGestureEventInFrame(const GestureEventWithHitTestResults& targetedEvent)
|
|
{
|
|
ASSERT(!targetedEvent.event().isScrollEvent());
|
|
|
|
RefPtr<Node> eventTarget = targetedEvent.hitTestResult().targetNode();
|
|
RefPtr<Scrollbar> scrollbar = targetedEvent.hitTestResult().scrollbar();
|
|
const PlatformGestureEvent& gestureEvent = targetedEvent.event();
|
|
|
|
if (scrollbar) {
|
|
bool eventSwallowed = scrollbar->gestureEvent(gestureEvent);
|
|
if (gestureEvent.type() == PlatformEvent::GestureTapDown && eventSwallowed)
|
|
m_scrollbarHandlingScrollGesture = scrollbar;
|
|
if (eventSwallowed)
|
|
return true;
|
|
}
|
|
|
|
if (eventTarget && eventTarget->dispatchGestureEvent(gestureEvent))
|
|
return true;
|
|
|
|
switch (gestureEvent.type()) {
|
|
case PlatformEvent::GestureTwoFingerTap: // FIXME(sky): Remove this.
|
|
case PlatformEvent::GestureTap:
|
|
return handleGestureTap(targetedEvent);
|
|
case PlatformEvent::GestureShowPress:
|
|
return handleGestureShowPress();
|
|
case PlatformEvent::GestureLongPress:
|
|
return handleGestureLongPress(targetedEvent);
|
|
case PlatformEvent::GestureLongTap:
|
|
return handleGestureLongTap(targetedEvent);
|
|
case PlatformEvent::GestureTapDown:
|
|
case PlatformEvent::GesturePinchBegin:
|
|
case PlatformEvent::GesturePinchEnd:
|
|
case PlatformEvent::GesturePinchUpdate:
|
|
case PlatformEvent::GestureTapDownCancel:
|
|
case PlatformEvent::GestureTapUnconfirmed:
|
|
break;
|
|
default:
|
|
ASSERT_NOT_REACHED();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::handleGestureScrollEvent(const PlatformGestureEvent& gestureEvent)
|
|
{
|
|
RefPtr<Node> eventTarget = nullptr;
|
|
RefPtr<Scrollbar> scrollbar;
|
|
if (gestureEvent.type() != PlatformEvent::GestureScrollBegin) {
|
|
scrollbar = m_scrollbarHandlingScrollGesture.get();
|
|
eventTarget = m_scrollGestureHandlingNode.get();
|
|
}
|
|
|
|
if (!eventTarget) {
|
|
Document* document = m_frame->document();
|
|
if (!document->renderView())
|
|
return false;
|
|
|
|
LayoutPoint viewPoint = gestureEvent.position();
|
|
HitTestRequest request(HitTestRequest::ReadOnly);
|
|
HitTestResult result(viewPoint);
|
|
document->renderView()->hitTest(request, result);
|
|
|
|
eventTarget = result.innerNode();
|
|
|
|
m_lastGestureScrollOverWidget = result.isOverWidget();
|
|
m_scrollGestureHandlingNode = eventTarget;
|
|
m_previousGestureScrolledNode = nullptr;
|
|
|
|
if (!scrollbar)
|
|
scrollbar = result.scrollbar();
|
|
}
|
|
|
|
if (scrollbar) {
|
|
bool eventSwallowed = scrollbar->gestureEvent(gestureEvent);
|
|
if (gestureEvent.type() == PlatformEvent::GestureScrollEnd
|
|
|| gestureEvent.type() == PlatformEvent::GestureFlingStart
|
|
|| !eventSwallowed) {
|
|
m_scrollbarHandlingScrollGesture = nullptr;
|
|
}
|
|
if (eventSwallowed)
|
|
return true;
|
|
}
|
|
|
|
if (eventTarget) {
|
|
bool eventSwallowed = handleScrollGestureOnResizer(eventTarget.get(), gestureEvent);
|
|
if (!eventSwallowed)
|
|
eventSwallowed = eventTarget->dispatchGestureEvent(gestureEvent);
|
|
if (eventSwallowed)
|
|
return true;
|
|
}
|
|
|
|
switch (gestureEvent.type()) {
|
|
case PlatformEvent::GestureScrollBegin:
|
|
return handleGestureScrollBegin(gestureEvent);
|
|
case PlatformEvent::GestureScrollUpdate:
|
|
case PlatformEvent::GestureScrollUpdateWithoutPropagation:
|
|
return handleGestureScrollUpdate(gestureEvent);
|
|
case PlatformEvent::GestureScrollEnd:
|
|
return handleGestureScrollEnd(gestureEvent);
|
|
case PlatformEvent::GestureFlingStart:
|
|
case PlatformEvent::GesturePinchBegin:
|
|
case PlatformEvent::GesturePinchEnd:
|
|
case PlatformEvent::GesturePinchUpdate:
|
|
return false;
|
|
default:
|
|
ASSERT_NOT_REACHED();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool EventHandler::handleGestureTap(const GestureEventWithHitTestResults& targetedEvent)
|
|
{
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
const PlatformGestureEvent& gestureEvent = targetedEvent.event();
|
|
|
|
UserGestureIndicator gestureIndicator(DefinitelyProcessingUserGesture);
|
|
|
|
unsigned modifierFlags = 0;
|
|
if (gestureEvent.altKey())
|
|
modifierFlags |= PlatformEvent::AltKey;
|
|
if (gestureEvent.ctrlKey())
|
|
modifierFlags |= PlatformEvent::CtrlKey;
|
|
if (gestureEvent.metaKey())
|
|
modifierFlags |= PlatformEvent::MetaKey;
|
|
if (gestureEvent.shiftKey())
|
|
modifierFlags |= PlatformEvent::ShiftKey;
|
|
PlatformEvent::Modifiers modifiers = static_cast<PlatformEvent::Modifiers>(modifierFlags);
|
|
|
|
HitTestResult currentHitTest = targetedEvent.hitTestResult();
|
|
|
|
// We use the adjusted position so the application isn't surprised to see a event with
|
|
// co-ordinates outside the target's bounds.
|
|
IntPoint adjustedPoint = gestureEvent.position();
|
|
|
|
PlatformMouseEvent fakeMouseMove(adjustedPoint, gestureEvent.globalPosition(),
|
|
NoButton, PlatformEvent::MouseMoved, /* clickCount */ 0,
|
|
modifiers, PlatformMouseEvent::FromTouch, gestureEvent.timestamp());
|
|
dispatchMouseEvent(EventTypeNames::mousemove, currentHitTest.innerNode(), 0, fakeMouseMove, true);
|
|
|
|
// Do a new hit-test in case the mousemove event changed the DOM.
|
|
// Note that if the original hit test wasn't over an element (eg. was over a scrollbar) we
|
|
// don't want to re-hit-test because it may be in the wrong frame (and there's no way the page
|
|
// could have seen the event anyway).
|
|
// FIXME: Use a hit-test cache to avoid unnecessary hit tests. http://crbug.com/398920
|
|
if (currentHitTest.innerNode())
|
|
currentHitTest = hitTestResultInFrame(m_frame, adjustedPoint, HitTestRequest::ReadOnly);
|
|
m_clickNode = currentHitTest.innerNode();
|
|
if (m_clickNode && m_clickNode->isTextNode())
|
|
m_clickNode = NodeRenderingTraversal::parent(m_clickNode.get());
|
|
|
|
PlatformMouseEvent fakeMouseDown(adjustedPoint, gestureEvent.globalPosition(),
|
|
LeftButton, PlatformEvent::MousePressed, gestureEvent.tapCount(),
|
|
modifiers, PlatformMouseEvent::FromTouch, gestureEvent.timestamp());
|
|
bool swallowMouseDownEvent = !dispatchMouseEvent(EventTypeNames::mousedown, currentHitTest.innerNode(), gestureEvent.tapCount(), fakeMouseDown, true);
|
|
if (!swallowMouseDownEvent)
|
|
swallowMouseDownEvent = handleMouseFocus(fakeMouseDown);
|
|
if (!swallowMouseDownEvent)
|
|
swallowMouseDownEvent = handleMousePressEvent(MouseEventWithHitTestResults(fakeMouseDown, currentHitTest));
|
|
|
|
// FIXME: Use a hit-test cache to avoid unnecessary hit tests. http://crbug.com/398920
|
|
if (currentHitTest.innerNode())
|
|
currentHitTest = hitTestResultInFrame(m_frame, adjustedPoint, HitTestRequest::ReadOnly);
|
|
PlatformMouseEvent fakeMouseUp(adjustedPoint, gestureEvent.globalPosition(),
|
|
LeftButton, PlatformEvent::MouseReleased, gestureEvent.tapCount(),
|
|
modifiers, PlatformMouseEvent::FromTouch, gestureEvent.timestamp());
|
|
bool swallowMouseUpEvent = !dispatchMouseEvent(EventTypeNames::mouseup, currentHitTest.innerNode(), gestureEvent.tapCount(), fakeMouseUp, false);
|
|
|
|
bool swallowClickEvent = false;
|
|
if (m_clickNode) {
|
|
if (currentHitTest.innerNode()) {
|
|
Node* clickTargetNode = currentHitTest.innerNode()->commonAncestor(*m_clickNode, parentForClickEvent);
|
|
swallowClickEvent = !dispatchMouseEvent(EventTypeNames::click, clickTargetNode, gestureEvent.tapCount(), fakeMouseUp, true);
|
|
}
|
|
m_clickNode = nullptr;
|
|
}
|
|
|
|
if (!swallowMouseUpEvent)
|
|
swallowMouseUpEvent = handleMouseReleaseEvent(MouseEventWithHitTestResults(fakeMouseUp, currentHitTest));
|
|
|
|
return swallowMouseDownEvent | swallowMouseUpEvent | swallowClickEvent;
|
|
}
|
|
|
|
bool EventHandler::handleGestureLongPress(const GestureEventWithHitTestResults& targetedEvent)
|
|
{
|
|
const PlatformGestureEvent& gestureEvent = targetedEvent.event();
|
|
|
|
// FIXME: Ideally we should try to remove the extra mouse-specific hit-tests here (re-using the
|
|
// supplied HitTestResult), but that will require some overhaul of the touch drag-and-drop code
|
|
// and LongPress is such a special scenario that it's unlikely to matter much in practice.
|
|
|
|
#if OS(ANDROID)
|
|
bool shouldLongPressSelectWord = true;
|
|
#else
|
|
bool shouldLongPressSelectWord = m_frame->settings() && m_frame->settings()->touchEditingEnabled();
|
|
#endif
|
|
if (shouldLongPressSelectWord) {
|
|
IntPoint hitTestPoint = gestureEvent.position();
|
|
HitTestResult result = hitTestResultAtPoint(hitTestPoint);
|
|
Node* innerNode = result.targetNode();
|
|
if (!result.isLiveLink() && innerNode && (innerNode->isContentEditable() || innerNode->isTextNode())) {
|
|
selectClosestWordFromHitTestResult(result, DontAppendTrailingWhitespace);
|
|
if (m_frame->selection().isRange()) {
|
|
focusDocumentView();
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool EventHandler::handleGestureLongTap(const GestureEventWithHitTestResults& targetedEvent)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::handleScrollGestureOnResizer(Node* eventTarget, const PlatformGestureEvent& gestureEvent) {
|
|
if (gestureEvent.type() == PlatformEvent::GestureScrollBegin) {
|
|
RenderLayer* layer = eventTarget->renderer() ? eventTarget->renderer()->enclosingLayer() : 0;
|
|
IntPoint p = gestureEvent.position();
|
|
if (layer && layer->scrollableArea() && layer->scrollableArea()->isPointInResizeControl(p, ResizerForTouch)) {
|
|
m_resizeScrollableArea = layer->scrollableArea();
|
|
m_resizeScrollableArea->setInResizeMode(true);
|
|
m_offsetFromResizeCorner = m_resizeScrollableArea->offsetFromResizeCorner(p);
|
|
return true;
|
|
}
|
|
} else if (gestureEvent.type() == PlatformEvent::GestureScrollUpdate ||
|
|
gestureEvent.type() == PlatformEvent::GestureScrollUpdateWithoutPropagation) {
|
|
if (m_resizeScrollableArea && m_resizeScrollableArea->inResizeMode()) {
|
|
m_resizeScrollableArea->resize(gestureEvent, m_offsetFromResizeCorner);
|
|
return true;
|
|
}
|
|
} else if (gestureEvent.type() == PlatformEvent::GestureScrollEnd) {
|
|
if (m_resizeScrollableArea && m_resizeScrollableArea->inResizeMode()) {
|
|
m_resizeScrollableArea->setInResizeMode(false);
|
|
m_resizeScrollableArea = 0;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::passScrollGestureEventToWidget(const PlatformGestureEvent& gestureEvent, RenderObject* renderer)
|
|
{
|
|
ASSERT(gestureEvent.isScrollEvent());
|
|
|
|
// FIXME(sky): Remove this.
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::handleGestureScrollEnd(const PlatformGestureEvent& gestureEvent) {
|
|
RefPtr<Node> node = m_scrollGestureHandlingNode;
|
|
clearGestureScrollNodes();
|
|
|
|
if (node)
|
|
passScrollGestureEventToWidget(gestureEvent, node->renderer());
|
|
|
|
return false;
|
|
}
|
|
|
|
bool EventHandler::handleGestureScrollBegin(const PlatformGestureEvent& gestureEvent)
|
|
{
|
|
Document* document = m_frame->document();
|
|
if (!document->renderView())
|
|
return false;
|
|
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return false;
|
|
|
|
// If there's no renderer on the node, send the event to the nearest ancestor with a renderer.
|
|
// Needed for <option> and <optgroup> elements so we can touch scroll <select>s
|
|
while (m_scrollGestureHandlingNode && !m_scrollGestureHandlingNode->renderer())
|
|
m_scrollGestureHandlingNode = m_scrollGestureHandlingNode->parentOrShadowHostNode();
|
|
|
|
if (!m_scrollGestureHandlingNode)
|
|
return false;
|
|
|
|
passScrollGestureEventToWidget(gestureEvent, m_scrollGestureHandlingNode->renderer());
|
|
|
|
return true;
|
|
}
|
|
|
|
bool EventHandler::handleGestureScrollUpdate(const PlatformGestureEvent& gestureEvent)
|
|
{
|
|
FloatSize delta(gestureEvent.deltaX(), gestureEvent.deltaY());
|
|
if (delta.isZero())
|
|
return false;
|
|
|
|
const float scaleFactor = m_frame->pageZoomFactor();
|
|
delta.scale(1 / scaleFactor, 1 / scaleFactor);
|
|
|
|
Node* node = m_scrollGestureHandlingNode.get();
|
|
if (!node)
|
|
return sendScrollEventToView(gestureEvent, delta);
|
|
|
|
// Ignore this event if the targeted node does not have a valid renderer.
|
|
RenderObject* renderer = node->renderer();
|
|
if (!renderer)
|
|
return false;
|
|
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
|
|
Node* stopNode = 0;
|
|
bool scrollShouldNotPropagate = gestureEvent.type() == PlatformEvent::GestureScrollUpdateWithoutPropagation;
|
|
|
|
// Try to send the event to the correct view.
|
|
if (passScrollGestureEventToWidget(gestureEvent, renderer)) {
|
|
if(scrollShouldNotPropagate)
|
|
m_previousGestureScrolledNode = m_scrollGestureHandlingNode;
|
|
|
|
return true;
|
|
}
|
|
|
|
if (scrollShouldNotPropagate)
|
|
stopNode = m_previousGestureScrolledNode.get();
|
|
|
|
// First try to scroll the closest scrollable RenderBox ancestor of |node|.
|
|
ScrollGranularity granularity = ScrollByPixel;
|
|
bool horizontalScroll = scroll(ScrollLeft, granularity, node, &stopNode, delta.width());
|
|
bool verticalScroll = scroll(ScrollUp, granularity, node, &stopNode, delta.height());
|
|
|
|
if (scrollShouldNotPropagate)
|
|
m_previousGestureScrolledNode = stopNode;
|
|
|
|
if (horizontalScroll || verticalScroll) {
|
|
setFrameWasScrolledByUser();
|
|
return true;
|
|
}
|
|
|
|
// Otherwise try to scroll the view.
|
|
return sendScrollEventToView(gestureEvent, delta);
|
|
}
|
|
|
|
bool EventHandler::sendScrollEventToView(const PlatformGestureEvent& gestureEvent, const FloatSize& scaledDelta)
|
|
{
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return false;
|
|
|
|
const float tickDivisor = static_cast<float>(WheelEvent::TickMultiplier);
|
|
IntPoint point(gestureEvent.position().x(), gestureEvent.position().y());
|
|
IntPoint globalPoint(gestureEvent.globalPosition().x(), gestureEvent.globalPosition().y());
|
|
PlatformWheelEvent syntheticWheelEvent(point, globalPoint,
|
|
scaledDelta.width(), scaledDelta.height(),
|
|
scaledDelta.width() / tickDivisor, scaledDelta.height() / tickDivisor,
|
|
ScrollByPixelWheelEvent,
|
|
gestureEvent.shiftKey(), gestureEvent.ctrlKey(), gestureEvent.altKey(), gestureEvent.metaKey());
|
|
syntheticWheelEvent.setHasPreciseScrollingDeltas(true);
|
|
|
|
bool scrolledFrame = view->wheelEvent(syntheticWheelEvent);
|
|
if (scrolledFrame)
|
|
setFrameWasScrolledByUser();
|
|
|
|
return scrolledFrame;
|
|
}
|
|
|
|
void EventHandler::clearGestureScrollNodes()
|
|
{
|
|
m_scrollGestureHandlingNode = nullptr;
|
|
m_previousGestureScrolledNode = nullptr;
|
|
}
|
|
|
|
bool EventHandler::isScrollbarHandlingGestures() const
|
|
{
|
|
return m_scrollbarHandlingScrollGesture.get();
|
|
}
|
|
|
|
bool EventHandler::shouldApplyTouchAdjustment(const PlatformGestureEvent& event) const
|
|
{
|
|
if (m_frame->settings() && !m_frame->settings()->touchAdjustmentEnabled())
|
|
return false;
|
|
return !event.area().isEmpty();
|
|
}
|
|
|
|
bool EventHandler::bestClickableNodeForHitTestResult(const HitTestResult& result, IntPoint& targetPoint, Node*& targetNode)
|
|
{
|
|
// FIXME: Unify this with the other best* functions which are very similar.
|
|
|
|
TRACE_EVENT0("input", "EventHandler::bestClickableNodeForHitTestResult");
|
|
ASSERT(result.isRectBasedTest());
|
|
|
|
// If the touch is over a scrollbar, don't adjust the touch point since touch adjustment only takes into account
|
|
// DOM nodes so a touch over a scrollbar will be adjusted towards nearby nodes. This leads to things like textarea
|
|
// scrollbars being untouchable.
|
|
if (result.scrollbar())
|
|
return false;
|
|
|
|
IntPoint touchCenter = m_frame->view()->contentsToWindow(result.roundedPointInMainFrame());
|
|
IntRect touchRect = m_frame->view()->contentsToWindow(result.hitTestLocation().boundingBox());
|
|
|
|
Vector<RefPtr<Node>, 11> nodes;
|
|
copyToVector(result.rectBasedTestResult(), nodes);
|
|
|
|
// FIXME: the explicit Vector conversion copies into a temporary and is wasteful.
|
|
return findBestClickableCandidate(targetNode, targetPoint, touchCenter, touchRect, Vector<RefPtr<Node> > (nodes));
|
|
}
|
|
|
|
bool EventHandler::bestZoomableAreaForTouchPoint(const IntPoint& touchCenter, const IntSize& touchRadius, IntRect& targetArea, Node*& targetNode)
|
|
{
|
|
HitTestResult result = hitTestResultAtPoint(touchCenter, HitTestRequest::ReadOnly | HitTestRequest::Active, touchRadius);
|
|
|
|
IntRect touchRect(touchCenter - touchRadius, touchRadius + touchRadius);
|
|
Vector<RefPtr<Node>, 11> nodes;
|
|
copyToVector(result.rectBasedTestResult(), nodes);
|
|
|
|
// FIXME: the explicit Vector conversion copies into a temporary and is wasteful.
|
|
return findBestZoomableArea(targetNode, targetArea, touchCenter, touchRect, Vector<RefPtr<Node> >(nodes));
|
|
}
|
|
|
|
GestureEventWithHitTestResults EventHandler::targetGestureEvent(const PlatformGestureEvent& gestureEvent, bool readOnly)
|
|
{
|
|
// Scrolling events get hit tested per frame (like wheel events do).
|
|
ASSERT(!gestureEvent.isScrollEvent());
|
|
|
|
HitTestRequest::HitTestRequestType hitType = getHitTypeForGestureType(gestureEvent.type());
|
|
double activeInterval = 0;
|
|
bool shouldKeepActiveForMinInterval = false;
|
|
if (readOnly) {
|
|
hitType |= HitTestRequest::ReadOnly;
|
|
} else if (gestureEvent.type() == PlatformEvent::GestureTap) {
|
|
// If the Tap is received very shortly after ShowPress, we want to
|
|
// delay clearing of the active state so that it's visible to the user
|
|
// for at least a couple of frames.
|
|
activeInterval = WTF::currentTime() - m_lastShowPressTimestamp;
|
|
shouldKeepActiveForMinInterval = m_lastShowPressTimestamp && activeInterval < minimumActiveInterval;
|
|
if (shouldKeepActiveForMinInterval)
|
|
hitType |= HitTestRequest::ReadOnly;
|
|
}
|
|
|
|
// Perform the rect-based hit-test. Note that we don't yet apply hover/active state here
|
|
// because we need to resolve touch adjustment first so that we apply hover/active it to
|
|
// the final adjusted node.
|
|
IntPoint hitTestPoint = gestureEvent.position();
|
|
IntSize touchRadius = gestureEvent.area();
|
|
touchRadius.scale(1.f / 2);
|
|
// FIXME: We should not do a rect-based hit-test if touch adjustment is disabled.
|
|
HitTestResult hitTestResult = hitTestResultAtPoint(hitTestPoint, hitType | HitTestRequest::ReadOnly, touchRadius);
|
|
|
|
// Adjust the location of the gesture to the most likely nearby node, as appropriate for the
|
|
// type of event.
|
|
PlatformGestureEvent adjustedEvent = gestureEvent;
|
|
applyTouchAdjustment(&adjustedEvent, &hitTestResult);
|
|
|
|
// Do a new hit-test at the (adjusted) gesture co-ordinates. This is necessary because
|
|
// rect-based hit testing and touch adjustment sometimes return a different node than
|
|
// what a point-based hit test would return for the same point.
|
|
// FIXME: Fix touch adjustment to avoid the need for a redundant hit test. http://crbug.com/398914
|
|
if (shouldApplyTouchAdjustment(gestureEvent)) {
|
|
LocalFrame* hitFrame = hitTestResult.innerNodeFrame();
|
|
if (!hitFrame)
|
|
hitFrame = m_frame;
|
|
hitTestResult = hitTestResultInFrame(hitFrame, adjustedEvent.position(), hitType | HitTestRequest::ReadOnly);
|
|
}
|
|
|
|
// Now apply hover/active state to the final target.
|
|
// FIXME: This is supposed to send mouseenter/mouseleave events, but doesn't because we
|
|
// aren't passing a PlatformMouseEvent.
|
|
HitTestRequest request(hitType | HitTestRequest::AllowChildFrameContent);
|
|
if (!request.readOnly())
|
|
m_frame->document()->updateHoverActiveState(request, hitTestResult.innerElement());
|
|
|
|
if (shouldKeepActiveForMinInterval) {
|
|
m_lastDeferredTapElement = hitTestResult.innerElement();
|
|
m_activeIntervalTimer.startOneShot(minimumActiveInterval - activeInterval, FROM_HERE);
|
|
}
|
|
|
|
return GestureEventWithHitTestResults(adjustedEvent, hitTestResult);
|
|
}
|
|
|
|
HitTestRequest::HitTestRequestType EventHandler::getHitTypeForGestureType(PlatformEvent::Type type)
|
|
{
|
|
HitTestRequest::HitTestRequestType hitType = HitTestRequest::TouchEvent | HitTestRequest::AllowFrameScrollbars;
|
|
switch (type) {
|
|
case PlatformEvent::GestureShowPress:
|
|
case PlatformEvent::GestureTapUnconfirmed:
|
|
return hitType | HitTestRequest::Active;
|
|
case PlatformEvent::GestureTapDownCancel:
|
|
// A TapDownCancel received when no element is active shouldn't really be changing hover state.
|
|
if (!m_frame->document()->activeHoverElement())
|
|
hitType |= HitTestRequest::ReadOnly;
|
|
return hitType | HitTestRequest::Release;
|
|
case PlatformEvent::GestureTap:
|
|
return hitType | HitTestRequest::Release;
|
|
case PlatformEvent::GestureTapDown:
|
|
case PlatformEvent::GestureLongPress:
|
|
case PlatformEvent::GestureLongTap:
|
|
case PlatformEvent::GestureTwoFingerTap:
|
|
// FIXME: Shouldn't LongTap and TwoFingerTap clear the Active state?
|
|
return hitType | HitTestRequest::Active | HitTestRequest::ReadOnly;
|
|
default:
|
|
ASSERT_NOT_REACHED();
|
|
return hitType | HitTestRequest::Active | HitTestRequest::ReadOnly;
|
|
}
|
|
}
|
|
|
|
void EventHandler::applyTouchAdjustment(PlatformGestureEvent* gestureEvent, HitTestResult* hitTestResult)
|
|
{
|
|
if (!shouldApplyTouchAdjustment(*gestureEvent))
|
|
return;
|
|
|
|
Node* adjustedNode = 0;
|
|
IntPoint adjustedPoint = gestureEvent->position();
|
|
IntSize radius = gestureEvent->area();
|
|
radius.scale(1.f / 2);
|
|
bool adjusted = false;
|
|
switch (gestureEvent->type()) {
|
|
case PlatformEvent::GestureTap:
|
|
case PlatformEvent::GestureTapUnconfirmed:
|
|
case PlatformEvent::GestureTapDown:
|
|
case PlatformEvent::GestureShowPress:
|
|
case PlatformEvent::GestureLongPress:
|
|
case PlatformEvent::GestureLongTap:
|
|
case PlatformEvent::GestureTwoFingerTap:
|
|
adjusted = bestClickableNodeForHitTestResult(*hitTestResult, adjustedPoint, adjustedNode);
|
|
break;
|
|
default:
|
|
ASSERT_NOT_REACHED();
|
|
}
|
|
|
|
// Update the hit-test result to be a point-based result instead of a rect-based result.
|
|
// FIXME: We should do this even when no candidate matches the node filter. crbug.com/398914
|
|
if (adjusted) {
|
|
hitTestResult->resolveRectBasedTest(adjustedNode, adjustedPoint);
|
|
gestureEvent->applyTouchAdjustment(adjustedPoint);
|
|
}
|
|
}
|
|
|
|
void EventHandler::scheduleHoverStateUpdate()
|
|
{
|
|
if (!m_hoverTimer.isActive())
|
|
m_hoverTimer.startOneShot(0, FROM_HERE);
|
|
}
|
|
|
|
void EventHandler::scheduleCursorUpdate()
|
|
{
|
|
if (!m_cursorUpdateTimer.isActive())
|
|
m_cursorUpdateTimer.startOneShot(cursorUpdateInterval, FROM_HERE);
|
|
}
|
|
|
|
void EventHandler::dispatchFakeMouseMoveEventSoon()
|
|
{
|
|
if (m_mousePressed)
|
|
return;
|
|
|
|
if (m_mousePositionIsUnknown)
|
|
return;
|
|
|
|
Settings* settings = m_frame->settings();
|
|
if (settings && !settings->deviceSupportsMouse())
|
|
return;
|
|
|
|
// If the content has ever taken longer than fakeMouseMoveShortInterval we
|
|
// reschedule the timer and use a longer time. This will cause the content
|
|
// to receive these moves only after the user is done scrolling, reducing
|
|
// pauses during the scroll.
|
|
if (m_maxMouseMovedDuration > fakeMouseMoveShortInterval) {
|
|
if (m_fakeMouseMoveEventTimer.isActive())
|
|
m_fakeMouseMoveEventTimer.stop();
|
|
m_fakeMouseMoveEventTimer.startOneShot(fakeMouseMoveLongInterval, FROM_HERE);
|
|
} else {
|
|
if (!m_fakeMouseMoveEventTimer.isActive())
|
|
m_fakeMouseMoveEventTimer.startOneShot(fakeMouseMoveShortInterval, FROM_HERE);
|
|
}
|
|
}
|
|
|
|
void EventHandler::dispatchFakeMouseMoveEventSoonInQuad(const FloatQuad& quad)
|
|
{
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return;
|
|
|
|
if (!quad.containsPoint(m_lastKnownMousePosition))
|
|
return;
|
|
|
|
dispatchFakeMouseMoveEventSoon();
|
|
}
|
|
|
|
void EventHandler::fakeMouseMoveEventTimerFired(Timer<EventHandler>* timer)
|
|
{
|
|
ASSERT_UNUSED(timer, timer == &m_fakeMouseMoveEventTimer);
|
|
ASSERT(!m_mousePressed);
|
|
|
|
Settings* settings = m_frame->settings();
|
|
if (settings && !settings->deviceSupportsMouse())
|
|
return;
|
|
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return;
|
|
|
|
if (!m_frame->page() || !m_frame->page()->focusController().isActive())
|
|
return;
|
|
|
|
// Don't dispatch a synthetic mouse move event if the mouse cursor is not visible to the user.
|
|
if (!isCursorVisible())
|
|
return;
|
|
|
|
bool shiftKey;
|
|
bool ctrlKey;
|
|
bool altKey;
|
|
bool metaKey;
|
|
PlatformKeyboardEvent::getCurrentModifierState(shiftKey, ctrlKey, altKey, metaKey);
|
|
PlatformMouseEvent fakeMouseMoveEvent(m_lastKnownMousePosition, m_lastKnownMouseGlobalPosition, NoButton, PlatformEvent::MouseMoved, 0, shiftKey, ctrlKey, altKey, metaKey, PlatformMouseEvent::RealOrIndistinguishable, currentTime());
|
|
handleMouseMoveEvent(fakeMouseMoveEvent);
|
|
}
|
|
|
|
void EventHandler::cancelFakeMouseMoveEvent()
|
|
{
|
|
m_fakeMouseMoveEventTimer.stop();
|
|
}
|
|
|
|
bool EventHandler::isCursorVisible() const
|
|
{
|
|
return m_frame->page()->isCursorVisible();
|
|
}
|
|
|
|
void EventHandler::resizeScrollableAreaDestroyed()
|
|
{
|
|
ASSERT(m_resizeScrollableArea);
|
|
m_resizeScrollableArea = 0;
|
|
}
|
|
|
|
void EventHandler::hoverTimerFired(Timer<EventHandler>*)
|
|
{
|
|
m_hoverTimer.stop();
|
|
|
|
ASSERT(m_frame);
|
|
ASSERT(m_frame->document());
|
|
|
|
if (RenderView* renderer = m_frame->contentRenderer()) {
|
|
HitTestRequest request(HitTestRequest::Move);
|
|
HitTestResult result(m_lastKnownMousePosition);
|
|
renderer->hitTest(request, result);
|
|
m_frame->document()->updateHoverActiveState(request, result.innerElement());
|
|
}
|
|
}
|
|
|
|
void EventHandler::activeIntervalTimerFired(Timer<EventHandler>*)
|
|
{
|
|
m_activeIntervalTimer.stop();
|
|
|
|
if (m_frame
|
|
&& m_frame->document()
|
|
&& m_lastDeferredTapElement) {
|
|
// FIXME: Enable condition when http://crbug.com/226842 lands
|
|
// m_lastDeferredTapElement.get() == m_frame->document()->activeElement()
|
|
HitTestRequest request(HitTestRequest::TouchEvent | HitTestRequest::Release);
|
|
m_frame->document()->updateHoverActiveState(request, m_lastDeferredTapElement.get());
|
|
}
|
|
m_lastDeferredTapElement = nullptr;
|
|
}
|
|
|
|
void EventHandler::notifyElementActivated()
|
|
{
|
|
// Since another element has been set to active, stop current timer and clear reference.
|
|
if (m_activeIntervalTimer.isActive())
|
|
m_activeIntervalTimer.stop();
|
|
m_lastDeferredTapElement = nullptr;
|
|
}
|
|
|
|
bool EventHandler::handleAccessKey(const PlatformKeyboardEvent& evt)
|
|
{
|
|
// FIXME: Ignoring the state of Shift key is what neither IE nor Firefox do.
|
|
// IE matches lower and upper case access keys regardless of Shift key state - but if both upper and
|
|
// lower case variants are present in a document, the correct element is matched based on Shift key state.
|
|
// Firefox only matches an access key if Shift is not pressed, and does that case-insensitively.
|
|
ASSERT(!(accessKeyModifiers() & PlatformEvent::ShiftKey));
|
|
if ((evt.modifiers() & ~PlatformEvent::ShiftKey) != accessKeyModifiers())
|
|
return false;
|
|
String key = evt.unmodifiedText();
|
|
Element* elem = m_frame->document()->getElementByAccessKey(key.lower());
|
|
if (!elem)
|
|
return false;
|
|
elem->accessKeyAction(false);
|
|
return true;
|
|
}
|
|
|
|
bool EventHandler::keyEvent(const PlatformKeyboardEvent& initialKeyEvent)
|
|
{
|
|
RefPtr<FrameView> protector(m_frame->view());
|
|
|
|
if (initialKeyEvent.windowsVirtualKeyCode() == VK_CAPITAL)
|
|
capsLockStateMayHaveChanged();
|
|
|
|
// Check for cases where we are too early for events -- possible unmatched key up
|
|
// from pressing return in the location bar.
|
|
RefPtr<Node> node = eventTargetNodeForDocument(m_frame->document());
|
|
if (!node)
|
|
return false;
|
|
|
|
UserGestureIndicator gestureIndicator(DefinitelyProcessingUserGesture);
|
|
|
|
// In IE, access keys are special, they are handled after default keydown processing, but cannot be canceled - this is hard to match.
|
|
// On Mac OS X, we process them before dispatching keydown, as the default keydown handler implements Emacs key bindings, which may conflict
|
|
// with access keys. Then we dispatch keydown, but suppress its default handling.
|
|
// On Windows, WebKit explicitly calls handleAccessKey() instead of dispatching a keypress event for WM_SYSCHAR messages.
|
|
// Other platforms currently match either Mac or Windows behavior, depending on whether they send combined KeyDown events.
|
|
bool matchedAnAccessKey = false;
|
|
if (initialKeyEvent.type() == PlatformEvent::KeyDown)
|
|
matchedAnAccessKey = handleAccessKey(initialKeyEvent);
|
|
|
|
// FIXME: it would be fair to let an input method handle KeyUp events before DOM dispatch.
|
|
if (initialKeyEvent.type() == PlatformEvent::KeyUp || initialKeyEvent.type() == PlatformEvent::Char)
|
|
return !node->dispatchKeyEvent(initialKeyEvent);
|
|
|
|
PlatformKeyboardEvent keyDownEvent = initialKeyEvent;
|
|
if (keyDownEvent.type() != PlatformEvent::RawKeyDown)
|
|
keyDownEvent.disambiguateKeyDownEvent(PlatformEvent::RawKeyDown);
|
|
RefPtr<KeyboardEvent> keydown = KeyboardEvent::create(keyDownEvent, m_frame->document()->domWindow());
|
|
if (matchedAnAccessKey)
|
|
keydown->setDefaultPrevented(true);
|
|
keydown->setTarget(node);
|
|
|
|
if (initialKeyEvent.type() == PlatformEvent::RawKeyDown) {
|
|
node->dispatchEvent(keydown, IGNORE_EXCEPTION);
|
|
// If frame changed as a result of keydown dispatch, then return true to avoid sending a subsequent keypress message to the new frame.
|
|
bool changedFocusedFrame = m_frame->page() && m_frame != m_frame->page()->focusController().focusedOrMainFrame();
|
|
return keydown->defaultHandled() || keydown->defaultPrevented() || changedFocusedFrame;
|
|
}
|
|
|
|
node->dispatchEvent(keydown, IGNORE_EXCEPTION);
|
|
// If frame changed as a result of keydown dispatch, then return early to avoid sending a subsequent keypress message to the new frame.
|
|
bool changedFocusedFrame = m_frame->page() && m_frame != m_frame->page()->focusController().focusedOrMainFrame();
|
|
bool keydownResult = keydown->defaultHandled() || keydown->defaultPrevented() || changedFocusedFrame;
|
|
if (keydownResult)
|
|
return keydownResult;
|
|
|
|
// Focus may have changed during keydown handling, so refetch node.
|
|
// But if we are dispatching a fake backward compatibility keypress, then we pretend that the keypress happened on the original node.
|
|
node = eventTargetNodeForDocument(m_frame->document());
|
|
if (!node)
|
|
return false;
|
|
|
|
PlatformKeyboardEvent keyPressEvent = initialKeyEvent;
|
|
keyPressEvent.disambiguateKeyDownEvent(PlatformEvent::Char);
|
|
if (keyPressEvent.text().isEmpty())
|
|
return keydownResult;
|
|
RefPtr<KeyboardEvent> keypress = KeyboardEvent::create(keyPressEvent, m_frame->document()->domWindow());
|
|
keypress->setTarget(node);
|
|
if (keydownResult)
|
|
keypress->setDefaultPrevented(true);
|
|
node->dispatchEvent(keypress, IGNORE_EXCEPTION);
|
|
|
|
return keydownResult || keypress->defaultPrevented() || keypress->defaultHandled();
|
|
}
|
|
|
|
void EventHandler::defaultKeyboardEventHandler(KeyboardEvent* event)
|
|
{
|
|
if (event->type() == EventTypeNames::keydown) {
|
|
// Clear caret blinking suspended state to make sure that caret blinks
|
|
// when we type again after long pressing on an empty input field.
|
|
if (m_frame && m_frame->selection().isCaretBlinkingSuspended())
|
|
m_frame->selection().setCaretBlinkingSuspended(false);
|
|
|
|
m_frame->editor().handleKeyboardEvent(event);
|
|
if (event->defaultHandled())
|
|
return;
|
|
if (event->keyIdentifier() == "U+0009")
|
|
defaultTabEventHandler(event);
|
|
}
|
|
if (event->type() == EventTypeNames::keypress) {
|
|
m_frame->editor().handleKeyboardEvent(event);
|
|
if (event->defaultHandled())
|
|
return;
|
|
}
|
|
}
|
|
|
|
bool EventHandler::dragHysteresisExceeded(const FloatPoint& floatDragViewportLocation) const
|
|
{
|
|
return dragHysteresisExceeded(flooredIntPoint(floatDragViewportLocation));
|
|
}
|
|
|
|
bool EventHandler::dragHysteresisExceeded(const IntPoint& dragViewportLocation) const
|
|
{
|
|
FrameView* view = m_frame->view();
|
|
if (!view)
|
|
return false;
|
|
IntPoint dragLocation = dragViewportLocation;
|
|
IntSize delta = dragLocation - m_mouseDownPos;
|
|
|
|
int threshold = 3;
|
|
|
|
return abs(delta.width()) >= threshold || abs(delta.height()) >= threshold;
|
|
}
|
|
|
|
bool EventHandler::handleTextInputEvent(const String& text, Event* underlyingEvent, TextEventInputType inputType)
|
|
{
|
|
// Platforms should differentiate real commands like selectAll from text input in disguise (like insertNewline),
|
|
// and avoid dispatching text input events from keydown default handlers.
|
|
ASSERT(!underlyingEvent || !underlyingEvent->isKeyboardEvent() || toKeyboardEvent(underlyingEvent)->type() == EventTypeNames::keypress);
|
|
|
|
if (!m_frame)
|
|
return false;
|
|
|
|
EventTarget* target;
|
|
if (underlyingEvent)
|
|
target = underlyingEvent->target();
|
|
else
|
|
target = eventTargetNodeForDocument(m_frame->document());
|
|
if (!target)
|
|
return false;
|
|
|
|
RefPtr<TextEvent> event = TextEvent::create(m_frame->domWindow(), text, inputType);
|
|
event->setUnderlyingEvent(underlyingEvent);
|
|
|
|
target->dispatchEvent(event, IGNORE_EXCEPTION);
|
|
return event->defaultHandled();
|
|
}
|
|
|
|
void EventHandler::defaultTextInputEventHandler(TextEvent* event)
|
|
{
|
|
if (m_frame->editor().handleTextEvent(event))
|
|
event->setDefaultHandled();
|
|
}
|
|
|
|
void EventHandler::defaultTabEventHandler(KeyboardEvent* event)
|
|
{
|
|
ASSERT(event->type() == EventTypeNames::keydown);
|
|
|
|
// We should only advance focus on tabs if no special modifier keys are held down.
|
|
if (event->ctrlKey() || event->metaKey())
|
|
return;
|
|
|
|
Page* page = m_frame->page();
|
|
if (!page)
|
|
return;
|
|
if (!page->tabKeyCyclesThroughElements())
|
|
return;
|
|
|
|
FocusType focusType = event->shiftKey() ? FocusTypeBackward : FocusTypeForward;
|
|
|
|
if (page->focusController().advanceFocus(focusType))
|
|
event->setDefaultHandled();
|
|
}
|
|
|
|
void EventHandler::capsLockStateMayHaveChanged()
|
|
{
|
|
}
|
|
|
|
void EventHandler::setFrameWasScrolledByUser()
|
|
{
|
|
if (FrameView* view = m_frame->view())
|
|
view->setWasScrolledByUser(true);
|
|
}
|
|
|
|
bool EventHandler::passMousePressEventToScrollbar(MouseEventWithHitTestResults& mev)
|
|
{
|
|
// FIXME(sky): Remove
|
|
return false;
|
|
}
|
|
|
|
// If scrollbar (under mouse) is different from last, send a mouse exited. Set
|
|
// last to scrollbar if setLast is true; else set last to 0.
|
|
void EventHandler::updateLastScrollbarUnderMouse(Scrollbar* scrollbar, bool setLast)
|
|
{
|
|
if (m_lastScrollbarUnderMouse != scrollbar) {
|
|
// Send mouse exited to the old scrollbar.
|
|
if (m_lastScrollbarUnderMouse)
|
|
m_lastScrollbarUnderMouse->mouseExited();
|
|
|
|
// Send mouse entered if we're setting a new scrollbar.
|
|
if (scrollbar && setLast)
|
|
scrollbar->mouseEntered();
|
|
|
|
m_lastScrollbarUnderMouse = setLast ? scrollbar : 0;
|
|
}
|
|
}
|
|
|
|
static const AtomicString& eventNameForTouchPointState(PlatformTouchPoint::State state)
|
|
{
|
|
switch (state) {
|
|
case PlatformTouchPoint::TouchReleased:
|
|
return EventTypeNames::touchend;
|
|
case PlatformTouchPoint::TouchCancelled:
|
|
return EventTypeNames::touchcancel;
|
|
case PlatformTouchPoint::TouchPressed:
|
|
return EventTypeNames::touchstart;
|
|
case PlatformTouchPoint::TouchMoved:
|
|
return EventTypeNames::touchmove;
|
|
case PlatformTouchPoint::TouchStationary:
|
|
// TouchStationary state is not converted to touch events, so fall through to assert.
|
|
default:
|
|
ASSERT_NOT_REACHED();
|
|
return emptyAtom;
|
|
}
|
|
}
|
|
|
|
HitTestResult EventHandler::hitTestResultInFrame(LocalFrame* frame, const LayoutPoint& point, HitTestRequest::HitTestRequestType hitType)
|
|
{
|
|
HitTestResult result(point);
|
|
|
|
if (!frame || !frame->contentRenderer())
|
|
return result;
|
|
if (frame->view()) {
|
|
IntRect rect = frame->view()->visibleContentRect();
|
|
if (!rect.contains(roundedIntPoint(point)))
|
|
return result;
|
|
}
|
|
frame->contentRenderer()->hitTest(HitTestRequest(hitType), result);
|
|
return result;
|
|
}
|
|
|
|
bool EventHandler::handleTouchEvent(const PlatformTouchEvent& event)
|
|
{
|
|
TRACE_EVENT0("blink", "EventHandler::handleTouchEvent");
|
|
|
|
const Vector<PlatformTouchPoint>& points = event.touchPoints();
|
|
|
|
unsigned i;
|
|
bool freshTouchEvents = true;
|
|
bool allTouchReleased = true;
|
|
for (i = 0; i < points.size(); ++i) {
|
|
const PlatformTouchPoint& point = points[i];
|
|
if (point.state() != PlatformTouchPoint::TouchPressed)
|
|
freshTouchEvents = false;
|
|
if (point.state() != PlatformTouchPoint::TouchReleased && point.state() != PlatformTouchPoint::TouchCancelled)
|
|
allTouchReleased = false;
|
|
}
|
|
if (freshTouchEvents) {
|
|
// Ideally we'd ASSERT !m_touchSequenceDocument here since we should
|
|
// have cleared the active document when we saw the last release. But we
|
|
// have some tests that violate this, ClusterFuzz could trigger it, and
|
|
// there may be cases where the browser doesn't reliably release all
|
|
// touches. http://crbug.com/345372 tracks this.
|
|
m_touchSequenceDocument.clear();
|
|
m_touchSequenceUserGestureToken.clear();
|
|
}
|
|
|
|
OwnPtr<UserGestureIndicator> gestureIndicator;
|
|
|
|
if (m_touchSequenceUserGestureToken)
|
|
gestureIndicator = adoptPtr(new UserGestureIndicator(m_touchSequenceUserGestureToken.release()));
|
|
else
|
|
gestureIndicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingUserGesture));
|
|
|
|
m_touchSequenceUserGestureToken = gestureIndicator->currentToken();
|
|
|
|
ASSERT(m_frame->view());
|
|
if (m_touchSequenceDocument && (!m_touchSequenceDocument->frame() || !m_touchSequenceDocument->frame()->view())) {
|
|
// If the active touch document has no frame or view, it's probably being destroyed
|
|
// so we can't dispatch events.
|
|
return false;
|
|
}
|
|
|
|
// First do hit tests for any new touch points.
|
|
for (i = 0; i < points.size(); ++i) {
|
|
const PlatformTouchPoint& point = points[i];
|
|
|
|
// Touch events implicitly capture to the touched node, and don't change
|
|
// active/hover states themselves (Gesture events do). So we only need
|
|
// to hit-test on touchstart, and it can be read-only.
|
|
if (point.state() == PlatformTouchPoint::TouchPressed) {
|
|
HitTestRequest::HitTestRequestType hitType = HitTestRequest::TouchEvent | HitTestRequest::ReadOnly | HitTestRequest::Active;
|
|
LayoutPoint pagePoint = roundedLayoutPoint(point.pos());
|
|
HitTestResult result;
|
|
if (!m_touchSequenceDocument) {
|
|
result = hitTestResultAtPoint(pagePoint, hitType);
|
|
} else if (m_touchSequenceDocument->frame()) {
|
|
LayoutPoint framePoint = roundedLayoutPoint(point.pos());
|
|
result = hitTestResultInFrame(m_touchSequenceDocument->frame(), framePoint, hitType);
|
|
} else
|
|
continue;
|
|
|
|
Node* node = result.innerNode();
|
|
if (!node)
|
|
continue;
|
|
|
|
// Touch events should not go to text nodes
|
|
if (node->isTextNode())
|
|
node = NodeRenderingTraversal::parent(node);
|
|
|
|
if (!m_touchSequenceDocument) {
|
|
// Keep track of which document should receive all touch events
|
|
// in the active sequence. This must be a single document to
|
|
// ensure we don't leak Nodes between documents.
|
|
m_touchSequenceDocument = &(result.innerNode()->document());
|
|
ASSERT(m_touchSequenceDocument->frame()->view());
|
|
}
|
|
|
|
// Ideally we'd ASSERT(!m_targetForTouchID.contains(point.id())
|
|
// since we shouldn't get a touchstart for a touch that's already
|
|
// down. However EventSender allows this to be violated and there's
|
|
// some tests that take advantage of it. There may also be edge
|
|
// cases in the browser where this happens.
|
|
// See http://crbug.com/345372.
|
|
m_targetForTouchID.set(point.id(), node);
|
|
|
|
TouchAction effectiveTouchAction = computeEffectiveTouchAction(*node);
|
|
if (effectiveTouchAction != TouchActionAuto)
|
|
m_frame->page()->chrome().client().setTouchAction(effectiveTouchAction);
|
|
}
|
|
}
|
|
|
|
m_touchPressed = !allTouchReleased;
|
|
|
|
// If there's no document receiving touch events, or no handlers on the
|
|
// document set to receive the events, then we can skip all the rest of
|
|
// this work.
|
|
if (!m_touchSequenceDocument || !m_touchSequenceDocument->frameHost() || !m_touchSequenceDocument->frameHost()->eventHandlerRegistry().hasEventHandlers(EventHandlerRegistry::TouchEvent) || !m_touchSequenceDocument->frame()) {
|
|
if (allTouchReleased) {
|
|
m_touchSequenceDocument.clear();
|
|
m_touchSequenceUserGestureToken.clear();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Build up the lists to use for the 'touches', 'targetTouches' and
|
|
// 'changedTouches' attributes in the JS event. See
|
|
// http://www.w3.org/TR/touch-events/#touchevent-interface for how these
|
|
// lists fit together.
|
|
|
|
// Holds the complete set of touches on the screen.
|
|
RefPtr<TouchList> touches = TouchList::create();
|
|
|
|
// A different view on the 'touches' list above, filtered and grouped by
|
|
// event target. Used for the 'targetTouches' list in the JS event.
|
|
typedef HashMap<EventTarget*, RefPtr<TouchList> > TargetTouchesHeapMap;
|
|
TargetTouchesHeapMap touchesByTarget;
|
|
|
|
// Array of touches per state, used to assemble the 'changedTouches' list.
|
|
typedef HashSet<RefPtr<EventTarget> > EventTargetSet;
|
|
struct {
|
|
// The touches corresponding to the particular change state this struct
|
|
// instance represents.
|
|
RefPtr<TouchList> m_touches;
|
|
// Set of targets involved in m_touches.
|
|
EventTargetSet m_targets;
|
|
} changedTouches[PlatformTouchPoint::TouchStateEnd];
|
|
|
|
for (i = 0; i < points.size(); ++i) {
|
|
const PlatformTouchPoint& point = points[i];
|
|
PlatformTouchPoint::State pointState = point.state();
|
|
RefPtr<EventTarget> touchTarget = nullptr;
|
|
|
|
if (pointState == PlatformTouchPoint::TouchReleased || pointState == PlatformTouchPoint::TouchCancelled) {
|
|
// The target should be the original target for this touch, so get
|
|
// it from the hashmap. As it's a release or cancel we also remove
|
|
// it from the map.
|
|
touchTarget = m_targetForTouchID.take(point.id());
|
|
} else {
|
|
// No hittest is performed on move or stationary, since the target
|
|
// is not allowed to change anyway.
|
|
touchTarget = m_targetForTouchID.get(point.id());
|
|
}
|
|
|
|
LocalFrame* targetFrame = 0;
|
|
bool knownTarget = false;
|
|
if (touchTarget) {
|
|
Document& doc = touchTarget->toNode()->document();
|
|
// If the target node has moved to a new document while it was being touched,
|
|
// we can't send events to the new document because that could leak nodes
|
|
// from one document to another. See http://crbug.com/394339.
|
|
if (&doc == m_touchSequenceDocument.get()) {
|
|
targetFrame = doc.frame();
|
|
knownTarget = true;
|
|
}
|
|
}
|
|
if (!knownTarget) {
|
|
// If we don't have a target registered for the point it means we've
|
|
// missed our opportunity to do a hit test for it (due to some
|
|
// optimization that prevented blink from ever seeing the
|
|
// touchstart), or that the touch started outside the active touch
|
|
// sequence document. We should still include the touch in the
|
|
// Touches list reported to the application (eg. so it can
|
|
// differentiate between a one and two finger gesture), but we won't
|
|
// actually dispatch any events for it. Set the target to the
|
|
// Document so that there's some valid node here. Perhaps this
|
|
// should really be LocalDOMWindow, but in all other cases the target of
|
|
// a Touch is a Node so using the window could be a breaking change.
|
|
// Since we know there was no handler invoked, the specific target
|
|
// should be completely irrelevant to the application.
|
|
touchTarget = m_touchSequenceDocument;
|
|
targetFrame = m_touchSequenceDocument->frame();
|
|
}
|
|
ASSERT(targetFrame);
|
|
|
|
FloatPoint pagePoint = point.pos();
|
|
|
|
float scaleFactor = 1.0f / targetFrame->pageZoomFactor();
|
|
|
|
FloatPoint adjustedPagePoint = pagePoint.scaledBy(scaleFactor);
|
|
FloatSize adjustedRadius = point.radius().scaledBy(scaleFactor);
|
|
|
|
RefPtr<Touch> touch = Touch::create(
|
|
targetFrame, touchTarget.get(), point.id(), point.screenPos(), adjustedPagePoint, adjustedRadius, point.rotationAngle(), point.force());
|
|
|
|
// Ensure this target's touch list exists, even if it ends up empty, so
|
|
// it can always be passed to TouchEvent::Create below.
|
|
TargetTouchesHeapMap::iterator targetTouchesIterator = touchesByTarget.find(touchTarget.get());
|
|
if (targetTouchesIterator == touchesByTarget.end()) {
|
|
touchesByTarget.set(touchTarget.get(), TouchList::create());
|
|
targetTouchesIterator = touchesByTarget.find(touchTarget.get());
|
|
}
|
|
|
|
// touches and targetTouches should only contain information about
|
|
// touches still on the screen, so if this point is released or
|
|
// cancelled it will only appear in the changedTouches list.
|
|
if (pointState != PlatformTouchPoint::TouchReleased && pointState != PlatformTouchPoint::TouchCancelled) {
|
|
touches->append(touch);
|
|
targetTouchesIterator->value->append(touch);
|
|
}
|
|
|
|
// Now build up the correct list for changedTouches.
|
|
// Note that any touches that are in the TouchStationary state (e.g. if
|
|
// the user had several points touched but did not move them all) should
|
|
// never be in the changedTouches list so we do not handle them
|
|
// explicitly here. See https://bugs.webkit.org/show_bug.cgi?id=37609
|
|
// for further discussion about the TouchStationary state.
|
|
if (pointState != PlatformTouchPoint::TouchStationary && knownTarget) {
|
|
ASSERT(pointState < PlatformTouchPoint::TouchStateEnd);
|
|
if (!changedTouches[pointState].m_touches)
|
|
changedTouches[pointState].m_touches = TouchList::create();
|
|
changedTouches[pointState].m_touches->append(touch);
|
|
changedTouches[pointState].m_targets.add(touchTarget);
|
|
}
|
|
}
|
|
if (allTouchReleased) {
|
|
m_touchSequenceDocument.clear();
|
|
m_touchSequenceUserGestureToken.clear();
|
|
}
|
|
|
|
// Now iterate the changedTouches list and m_targets within it, sending
|
|
// events to the targets as required.
|
|
bool swallowedEvent = false;
|
|
for (unsigned state = 0; state != PlatformTouchPoint::TouchStateEnd; ++state) {
|
|
if (!changedTouches[state].m_touches)
|
|
continue;
|
|
|
|
const AtomicString& stateName(eventNameForTouchPointState(static_cast<PlatformTouchPoint::State>(state)));
|
|
const EventTargetSet& targetsForState = changedTouches[state].m_targets;
|
|
for (EventTargetSet::const_iterator it = targetsForState.begin(); it != targetsForState.end(); ++it) {
|
|
EventTarget* touchEventTarget = it->get();
|
|
RefPtr<TouchEvent> touchEvent = TouchEvent::create(
|
|
touches.get(), touchesByTarget.get(touchEventTarget), changedTouches[state].m_touches.get(),
|
|
stateName, touchEventTarget->toNode()->document().domWindow(),
|
|
event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), event.cancelable());
|
|
touchEventTarget->toNode()->dispatchTouchEvent(touchEvent.get());
|
|
swallowedEvent = swallowedEvent || touchEvent->defaultPrevented() || touchEvent->defaultHandled();
|
|
}
|
|
}
|
|
|
|
return swallowedEvent;
|
|
}
|
|
|
|
TouchAction EventHandler::intersectTouchAction(TouchAction action1, TouchAction action2)
|
|
{
|
|
if (action1 == TouchActionNone || action2 == TouchActionNone)
|
|
return TouchActionNone;
|
|
if (action1 == TouchActionAuto)
|
|
return action2;
|
|
if (action2 == TouchActionAuto)
|
|
return action1;
|
|
if (!(action1 & action2))
|
|
return TouchActionNone;
|
|
return action1 & action2;
|
|
}
|
|
|
|
TouchAction EventHandler::computeEffectiveTouchAction(const Node& node)
|
|
{
|
|
// Start by permitting all actions, then walk the elements supporting
|
|
// touch-action from the target node up to the nearest scrollable ancestor
|
|
// and exclude any prohibited actions.
|
|
TouchAction effectiveTouchAction = TouchActionAuto;
|
|
for (const Node* curNode = &node; curNode; curNode = NodeRenderingTraversal::parent(curNode)) {
|
|
if (RenderObject* renderer = curNode->renderer()) {
|
|
if (renderer->supportsTouchAction()) {
|
|
TouchAction action = renderer->style()->touchAction();
|
|
effectiveTouchAction = intersectTouchAction(action, effectiveTouchAction);
|
|
if (effectiveTouchAction == TouchActionNone)
|
|
break;
|
|
}
|
|
|
|
// If we've reached an ancestor that supports a touch action, search no further.
|
|
if (renderer->isBox() && toRenderBox(renderer)->scrollsOverflow())
|
|
break;
|
|
}
|
|
}
|
|
return effectiveTouchAction;
|
|
}
|
|
|
|
void EventHandler::setLastKnownMousePosition(const PlatformMouseEvent& event)
|
|
{
|
|
m_mousePositionIsUnknown = false;
|
|
m_lastKnownMousePosition = event.position();
|
|
m_lastKnownMouseGlobalPosition = event.globalPosition();
|
|
}
|
|
|
|
bool EventHandler::passWheelEventToWidget(const PlatformWheelEvent& wheelEvent, Widget* widget)
|
|
{
|
|
// We can sometimes get a null widget! EventHandlerMac handles a null
|
|
// widget by returning false, so we do the same.
|
|
if (!widget)
|
|
return false;
|
|
|
|
// If not a FrameView, then probably a plugin widget. Those will receive
|
|
// the event via an EventTargetNode dispatch when this returns false.
|
|
if (!widget->isFrameView())
|
|
return false;
|
|
|
|
return toFrameView(widget)->frame().eventHandler().handleWheelEvent(wheelEvent);
|
|
}
|
|
|
|
bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)
|
|
{
|
|
// Figure out which view to send the event to.
|
|
if (!event.targetNode() || !event.targetNode()->renderer() || !event.targetNode()->renderer()->isWidget())
|
|
return false;
|
|
return false;
|
|
}
|
|
|
|
void EventHandler::focusDocumentView()
|
|
{
|
|
Page* page = m_frame->page();
|
|
if (!page)
|
|
return;
|
|
page->focusController().focusDocumentView(m_frame);
|
|
}
|
|
|
|
unsigned EventHandler::accessKeyModifiers()
|
|
{
|
|
#if OS(MACOSX)
|
|
return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
|
|
#else
|
|
return PlatformEvent::AltKey;
|
|
#endif
|
|
}
|
|
|
|
} // namespace blink
|