/* * Copyright (C) 2011, 2012 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "sky/engine/config.h" #include "sky/engine/web/WebViewImpl.h" #include "gen/sky/core/CSSValueKeywords.h" #include "gen/sky/core/HTMLNames.h" #include "gen/sky/platform/RuntimeEnabledFeatures.h" #include "sky/engine/core/dom/Document.h" #include "sky/engine/core/dom/DocumentMarkerController.h" #include "sky/engine/core/dom/NodeRenderingTraversal.h" #include "sky/engine/core/dom/Text.h" #include "sky/engine/core/editing/Editor.h" #include "sky/engine/core/editing/FrameSelection.h" #include "sky/engine/core/editing/HTMLInterchange.h" #include "sky/engine/core/editing/InputMethodController.h" #include "sky/engine/core/editing/TextIterator.h" #include "sky/engine/core/events/KeyboardEvent.h" #include "sky/engine/core/events/WheelEvent.h" #include "sky/engine/core/frame/FrameHost.h" #include "sky/engine/core/frame/FrameView.h" #include "sky/engine/core/frame/LocalFrame.h" #include "sky/engine/core/frame/Settings.h" #include "sky/engine/core/html/HTMLImportElement.h" #include "sky/engine/core/html/ime/InputMethodContext.h" #include "sky/engine/core/loader/FrameLoader.h" #include "sky/engine/core/loader/UniqueIdentifier.h" #include "sky/engine/core/page/AutoscrollController.h" #include "sky/engine/core/page/Chrome.h" #include "sky/engine/core/page/EventHandler.h" #include "sky/engine/core/page/EventWithHitTestResults.h" #include "sky/engine/core/page/FocusController.h" #include "sky/engine/core/page/Page.h" #include "sky/engine/core/page/TouchDisambiguation.h" #include "sky/engine/core/rendering/RenderView.h" #include "sky/engine/platform/Cursor.h" #include "sky/engine/platform/KeyboardCodes.h" #include "sky/engine/platform/Logging.h" #include "sky/engine/platform/NotImplemented.h" #include "sky/engine/platform/PlatformGestureEvent.h" #include "sky/engine/platform/PlatformKeyboardEvent.h" #include "sky/engine/platform/PlatformMouseEvent.h" #include "sky/engine/platform/PlatformWheelEvent.h" #include "sky/engine/platform/TraceEvent.h" #include "sky/engine/platform/UserGestureIndicator.h" #include "sky/engine/platform/fonts/FontCache.h" #include "sky/engine/platform/graphics/Color.h" #include "sky/engine/platform/graphics/GraphicsContext.h" #include "sky/engine/platform/graphics/Image.h" #include "sky/engine/platform/graphics/ImageBuffer.h" #include "sky/engine/platform/scroll/Scrollbar.h" #include "sky/engine/public/platform/Platform.h" #include "sky/engine/public/platform/WebFloatPoint.h" #include "sky/engine/public/platform/WebImage.h" #include "sky/engine/public/platform/WebLayerTreeView.h" #include "sky/engine/public/platform/WebURLRequest.h" #include "sky/engine/public/platform/WebVector.h" #include "sky/engine/public/web/WebActiveWheelFlingParameters.h" #include "sky/engine/public/web/WebBeginFrameArgs.h" #include "sky/engine/public/web/WebFrameClient.h" #include "sky/engine/public/web/WebHitTestResult.h" #include "sky/engine/public/web/WebNode.h" #include "sky/engine/public/web/WebRange.h" #include "sky/engine/public/web/WebTextInputInfo.h" #include "sky/engine/public/web/WebViewClient.h" #include "sky/engine/web/CompositionUnderlineVectorBuilder.h" #include "sky/engine/web/WebInputEventConversion.h" #include "sky/engine/web/WebLocalFrameImpl.h" #include "sky/engine/web/WebSettingsImpl.h" #include "sky/engine/wtf/CurrentTime.h" #include "sky/engine/wtf/RefPtr.h" #include "sky/engine/wtf/TemporaryChange.h" // Get rid of WTF's pow define so we can use std::pow. #undef pow #include // for std::pow namespace blink { // WebView ---------------------------------------------------------------- WebView* WebView::create(WebViewClient* client) { // Pass the WebViewImpl's self-reference to the caller. return WebViewImpl::create(client); } WebViewImpl* WebViewImpl::create(WebViewClient* client) { // Pass the WebViewImpl's self-reference to the caller. return adoptRef(new WebViewImpl(client)).leakRef(); } void WebViewImpl::setMainFrame(WebFrame* frame) { toWebLocalFrameImpl(frame)->initializeCoreFrame(&page()->frameHost()); } void WebViewImpl::setSpellCheckClient(WebSpellCheckClient* spellCheckClient) { m_spellCheckClient = spellCheckClient; } WebViewImpl::WebViewImpl(WebViewClient* client) : m_client(client) , m_spellCheckClient(0) , m_chromeClientImpl(this) , m_editorClientImpl(this) , m_spellCheckerClientImpl(this) , m_fixedLayoutSizeLock(false) , m_rootLayerScale(1) , m_suppressNextKeypressEvent(false) , m_imeAcceptEvents(true) , m_isTransparent(false) , m_rootLayer(0) , m_matchesHeuristicsForGpuRasterization(false) , m_recreatingGraphicsContext(false) , m_flingModifier(0) , m_flingSourceDevice(false) , m_showPaintRects(false) , m_showDebugBorders(false) , m_showScrollBottleneckRects(false) , m_baseBackgroundColor(Color::white) , m_backgroundColorOverride(Color::transparent) , m_userGestureObserved(false) { Page::PageClients pageClients; pageClients.chromeClient = &m_chromeClientImpl; pageClients.editorClient = &m_editorClientImpl; pageClients.spellCheckerClient = &m_spellCheckerClientImpl; m_page = adoptPtr(new Page(pageClients, m_client->services())); setDeviceScaleFactor(m_client->screenInfo().deviceScaleFactor); setVisibilityState(m_client->visibilityState(), true); m_client->initializeLayerTreeView(); } WebViewImpl::~WebViewImpl() { ASSERT(!m_page); } WebLocalFrameImpl* WebViewImpl::mainFrameImpl() { return m_page ? WebLocalFrameImpl::fromFrame(m_page->mainFrame()) : 0; } void WebViewImpl::handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent& event) { m_client->setMouseOverURL(WebURL()); mainFrame.eventHandler().handleMouseLeaveEvent(PlatformMouseEventBuilder(mainFrame.view(), event)); } void WebViewImpl::handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent& event) { mainFrame.eventHandler().handleMousePressEvent(PlatformMouseEventBuilder(mainFrame.view(), event)); if (event.button == WebMouseEvent::ButtonLeft && m_mouseCaptureNode) m_mouseCaptureGestureToken = mainFrame.eventHandler().takeLastMouseDownGestureToken(); } void WebViewImpl::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event) { mainFrame.eventHandler().handleMouseReleaseEvent(PlatformMouseEventBuilder(mainFrame.view(), event)); } bool WebViewImpl::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event) { return mainFrame.eventHandler().handleWheelEvent(PlatformWheelEventBuilder(mainFrame.view(), event)); } void WebViewImpl::handleMouseMove(LocalFrame& mainFrame, const WebMouseEvent& event) { mainFrame.eventHandler().handleMouseMoveEvent(PlatformMouseEventBuilder(mainFrame.view(), event)); } bool WebViewImpl::handleTouchEvent(LocalFrame& mainFrame, const WebTouchEvent& event) { return mainFrame.eventHandler().handleTouchEvent(PlatformTouchEventBuilder(mainFrame.view(), event)); } bool WebViewImpl::handleGestureEvent(const WebGestureEvent& event) { bool eventSwallowed = false; bool eventCancelled = false; // for disambiguation PlatformGestureEventBuilder platformEvent(mainFrameImpl()->frameView(), event); // FIXME: Remove redundant hit tests by pushing the call to EventHandler::targetGestureEvent // up to this point and pass GestureEventWithHitTestResults around. switch (event.type) { case WebInputEvent::GestureTap: { m_client->cancelScheduledContentIntents(); eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent); break; } case WebInputEvent::GestureTwoFingerTap: case WebInputEvent::GestureLongPress: case WebInputEvent::GestureLongTap: { if (!mainFrameImpl() || !mainFrameImpl()->frameView()) break; m_client->cancelScheduledContentIntents(); eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent); break; } case WebInputEvent::GestureShowPress: { m_client->cancelScheduledContentIntents(); eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent); break; } case WebInputEvent::GestureDoubleTap: // GestureDoubleTap is currently only used by Android for zooming. For WebCore, // GestureTap with tap count = 2 is used instead. So we drop GestureDoubleTap here. eventSwallowed = true; break; case WebInputEvent::GestureScrollBegin: case WebInputEvent::GesturePinchBegin: m_client->cancelScheduledContentIntents(); case WebInputEvent::GestureTapDown: case WebInputEvent::GestureScrollEnd: case WebInputEvent::GestureScrollUpdate: case WebInputEvent::GestureScrollUpdateWithoutPropagation: case WebInputEvent::GestureTapCancel: case WebInputEvent::GestureTapUnconfirmed: case WebInputEvent::GesturePinchEnd: case WebInputEvent::GesturePinchUpdate: case WebInputEvent::GestureFlingStart: { eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent); break; } default: ASSERT_NOT_REACHED(); } m_client->didHandleGestureEvent(event, eventCancelled); return eventSwallowed; } void WebViewImpl::setShowPaintRects(bool show) { m_showPaintRects = show; } void WebViewImpl::setShowDebugBorders(bool show) { m_showDebugBorders = show; } void WebViewImpl::setShowScrollBottleneckRects(bool show) { m_showScrollBottleneckRects = show; } void WebViewImpl::acceptLanguagesChanged() { if (!page()) return; page()->acceptLanguagesChanged(); } bool WebViewImpl::handleKeyEvent(const WebKeyboardEvent& event) { ASSERT((event.type == WebInputEvent::RawKeyDown) || (event.type == WebInputEvent::KeyDown) || (event.type == WebInputEvent::KeyUp)); // Please refer to the comments explaining the m_suppressNextKeypressEvent // member. // The m_suppressNextKeypressEvent is set if the KeyDown is handled by // Webkit. A keyDown event is typically associated with a keyPress(char) // event and a keyUp event. We reset this flag here as this is a new keyDown // event. m_suppressNextKeypressEvent = false; RefPtr focusedFrame = focusedCoreFrame(); if (!focusedFrame) return false; RefPtr frame = focusedFrame.get(); PlatformKeyboardEventBuilder evt(event); if (frame->eventHandler().keyEvent(evt)) { if (WebInputEvent::RawKeyDown == event.type) { // Suppress the next keypress event unless the focused node is a plug-in node. // (Flash needs these keypress events to handle non-US keyboards.) m_suppressNextKeypressEvent = true; } return true; } return keyEventDefault(event); } bool WebViewImpl::handleCharEvent(const WebKeyboardEvent& event) { ASSERT(event.type == WebInputEvent::Char); // Please refer to the comments explaining the m_suppressNextKeypressEvent // member. The m_suppressNextKeypressEvent is set if the KeyDown is // handled by Webkit. A keyDown event is typically associated with a // keyPress(char) event and a keyUp event. We reset this flag here as it // only applies to the current keyPress event. bool suppress = m_suppressNextKeypressEvent; m_suppressNextKeypressEvent = false; LocalFrame* frame = focusedCoreFrame(); if (!frame) return suppress; EventHandler& handler = frame->eventHandler(); PlatformKeyboardEventBuilder evt(event); if (!evt.isCharacterKey()) return true; // Safari 3.1 does not pass off windows system key messages (WM_SYSCHAR) to // the eventHandler::keyEvent. We mimic this behavior on all platforms since // for now we are converting other platform's key events to windows key // events. if (evt.isSystemKey()) return false; if (!suppress && !handler.keyEvent(evt)) return keyEventDefault(event); return true; } bool WebViewImpl::keyEventDefault(const WebKeyboardEvent& event) { LocalFrame* frame = focusedCoreFrame(); if (!frame) return false; switch (event.type) { case WebInputEvent::Char: if (event.windowsKeyCode == VKEY_SPACE) { int keyCode = ((event.modifiers & WebInputEvent::ShiftKey) ? VKEY_PRIOR : VKEY_NEXT); return scrollViewWithKeyboard(keyCode, event.modifiers); } break; case WebInputEvent::RawKeyDown: if (event.modifiers == WebInputEvent::ControlKey) { switch (event.windowsKeyCode) { // Match FF behavior in the sense that Ctrl+home/end are the only Ctrl // key combinations which affect scrolling. Safari is buggy in the // sense that it scrolls the page for all Ctrl+scrolling key // combinations. For e.g. Ctrl+pgup/pgdn/up/down, etc. case VKEY_HOME: case VKEY_END: break; default: return false; } } if (!event.isSystemKey && !(event.modifiers & WebInputEvent::ShiftKey)) return scrollViewWithKeyboard(event.windowsKeyCode, event.modifiers); break; default: break; } return false; } bool WebViewImpl::scrollViewWithKeyboard(int keyCode, int modifiers) { ScrollDirection scrollDirection; ScrollGranularity scrollGranularity; if (!mapKeyCodeForScroll(keyCode, &scrollDirection, &scrollGranularity)) return false; if (LocalFrame* frame = focusedCoreFrame()) return frame->eventHandler().bubblingScroll(scrollDirection, scrollGranularity); return false; } bool WebViewImpl::mapKeyCodeForScroll( int keyCode, ScrollDirection* scrollDirection, ScrollGranularity* scrollGranularity) { switch (keyCode) { case VKEY_LEFT: *scrollDirection = ScrollLeft; *scrollGranularity = ScrollByLine; break; case VKEY_RIGHT: *scrollDirection = ScrollRight; *scrollGranularity = ScrollByLine; break; case VKEY_UP: *scrollDirection = ScrollUp; *scrollGranularity = ScrollByLine; break; case VKEY_DOWN: *scrollDirection = ScrollDown; *scrollGranularity = ScrollByLine; break; case VKEY_HOME: *scrollDirection = ScrollUp; *scrollGranularity = ScrollByDocument; break; case VKEY_END: *scrollDirection = ScrollDown; *scrollGranularity = ScrollByDocument; break; case VKEY_PRIOR: // page up *scrollDirection = ScrollUp; *scrollGranularity = ScrollByPage; break; case VKEY_NEXT: // page down *scrollDirection = ScrollDown; *scrollGranularity = ScrollByPage; break; default: return false; } return true; } LocalFrame* WebViewImpl::focusedCoreFrame() const { return m_page ? m_page->focusController().focusedOrMainFrame() : 0; } WebViewImpl* WebViewImpl::fromPage(Page* page) { if (!page) return 0; return static_cast(page->chrome().client().webView()); } // WebWidget ------------------------------------------------------------------ void WebViewImpl::close() { if (m_page) { // Initiate shutdown for the entire frameset. This will cause a lot of // notifications to be sent. m_page->willBeDestroyed(); m_page.clear(); } // Reset the delegate to prevent notifications being sent as we're being // deleted. m_client = 0; deref(); // Balances ref() acquired in WebView::create } WebSize WebViewImpl::size() { return m_size; } void WebViewImpl::performResize() { updateMainFrameLayoutSize(); // If the virtual viewport pinch mode is enabled, the main frame will be resized // after layout so it can be sized to the contentsSize. if (FrameView* view = m_page->mainFrame()->view()) view->resize(m_size); } void WebViewImpl::resize(const WebSize& newSize) { if (m_size == newSize) return; FrameView* view = m_page->mainFrame()->view(); if (!view) return; m_size = newSize; performResize(); sendResizeEventAndRepaint(); } void WebViewImpl::beginFrame(const WebBeginFrameArgs& frameTime) { TRACE_EVENT0("blink", "WebViewImpl::beginFrame"); WebBeginFrameArgs validFrameTime(frameTime); if (!validFrameTime.lastFrameTimeMonotonic) validFrameTime.lastFrameTimeMonotonic = monotonicallyIncreasingTime(); WTF_LOG(ScriptedAnimationController, "WebViewImpl::beginFrame: page = %d", !m_page ? 0 : 1); if (!m_page) return; RefPtr view = m_page->mainFrame()->view(); if (!view) return; m_page->autoscrollController().animate(validFrameTime.lastFrameTimeMonotonic); m_page->animator().serviceScriptedAnimations(validFrameTime.lastFrameTimeMonotonic); } void WebViewImpl::layout() { TRACE_EVENT0("blink", "WebViewImpl::layout"); if (!m_page) return; m_page->animator().updateLayoutAndStyleForPainting(m_page->mainFrame()); } void WebViewImpl::paint(WebCanvas* canvas, const WebRect& rect) { if (rect.isEmpty()) return; GraphicsContext gc(canvas); gc.setCertainlyOpaque(!isTransparent()); gc.applyDeviceScaleFactor(m_page->deviceScaleFactor()); gc.setDeviceScaleFactor(m_page->deviceScaleFactor()); IntRect dirtyRect(rect); gc.save(); // Needed to save the canvas, not the GraphicsContext. FrameView* view = m_page->mainFrame()->view(); if (view) { gc.clip(dirtyRect); view->paint(&gc, dirtyRect); } else { gc.fillRect(dirtyRect, Color::white); } gc.restore(); } const WebInputEvent* WebViewImpl::m_currentInputEvent = 0; // FIXME: autogenerate this kind of code, and use it throughout Blink rather than // the one-offs for subsets of these values. static String inputTypeToName(WebInputEvent::Type type) { switch (type) { case WebInputEvent::MouseDown: return EventTypeNames::mousedown; case WebInputEvent::MouseUp: return EventTypeNames::mouseup; case WebInputEvent::MouseMove: return EventTypeNames::mousemove; case WebInputEvent::MouseEnter: return EventTypeNames::mouseenter; case WebInputEvent::MouseLeave: return EventTypeNames::mouseleave; case WebInputEvent::MouseWheel: return EventTypeNames::mousewheel; case WebInputEvent::KeyDown: return EventTypeNames::keydown; case WebInputEvent::KeyUp: return EventTypeNames::keyup; case WebInputEvent::GestureScrollBegin: return EventTypeNames::gesturescrollstart; case WebInputEvent::GestureScrollEnd: return EventTypeNames::gesturescrollend; case WebInputEvent::GestureScrollUpdate: return EventTypeNames::gesturescrollupdate; case WebInputEvent::GestureTapDown: return EventTypeNames::gesturetapdown; case WebInputEvent::GestureShowPress: return EventTypeNames::gestureshowpress; case WebInputEvent::GestureTap: return EventTypeNames::gesturetap; case WebInputEvent::GestureTapUnconfirmed: return EventTypeNames::gesturetapunconfirmed; case WebInputEvent::TouchStart: return EventTypeNames::touchstart; case WebInputEvent::TouchMove: return EventTypeNames::touchmove; case WebInputEvent::TouchEnd: return EventTypeNames::touchend; case WebInputEvent::TouchCancel: return EventTypeNames::touchcancel; default: return String("unknown"); } } bool WebViewImpl::handleInputEvent(const WebInputEvent& inputEvent) { TRACE_EVENT1("input", "WebViewImpl::handleInputEvent", "type", inputTypeToName(inputEvent.type).ascii().data()); TemporaryChange currentEventChange(m_currentInputEvent, &inputEvent); if (m_mouseCaptureNode && WebInputEvent::isMouseEventType(inputEvent.type)) { TRACE_EVENT1("input", "captured mouse event", "type", inputEvent.type); // Save m_mouseCaptureNode since mouseCaptureLost() will clear it. RefPtr node = m_mouseCaptureNode; // Not all platforms call mouseCaptureLost() directly. if (inputEvent.type == WebInputEvent::MouseUp) mouseCaptureLost(); OwnPtr gestureIndicator; AtomicString eventType; switch (inputEvent.type) { case WebInputEvent::MouseMove: eventType = EventTypeNames::mousemove; break; case WebInputEvent::MouseLeave: eventType = EventTypeNames::mouseout; break; case WebInputEvent::MouseDown: eventType = EventTypeNames::mousedown; gestureIndicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingNewUserGesture)); m_mouseCaptureGestureToken = gestureIndicator->currentToken(); break; case WebInputEvent::MouseUp: eventType = EventTypeNames::mouseup; gestureIndicator = adoptPtr(new UserGestureIndicator(m_mouseCaptureGestureToken.release())); break; default: ASSERT_NOT_REACHED(); } node->dispatchMouseEvent( PlatformMouseEventBuilder(mainFrameImpl()->frameView(), static_cast(inputEvent)), eventType, static_cast(inputEvent).clickCount); return true; } LocalFrame* frame = m_page ? m_page->mainFrame() : nullptr; switch (inputEvent.type) { // FIXME: WebKit seems to always return false on mouse events processing // methods. For now we'll assume it has processed them (as we are only // interested in whether keyboard events are processed). case WebInputEvent::MouseMove: if (!frame || !frame->view()) return true; handleMouseMove(*frame, static_cast(inputEvent)); return true; case WebInputEvent::MouseLeave: if (!frame || !frame->view()) return true; handleMouseLeave(*frame, static_cast(inputEvent)); return true; case WebInputEvent::MouseDown: if (!frame || !frame->view()) return true; handleMouseDown(*frame, static_cast(inputEvent)); return true; case WebInputEvent::MouseUp: if (!frame || !frame->view()) return true; handleMouseUp(*frame, static_cast(inputEvent)); return true; case WebInputEvent::MouseWheel: if (!frame || !frame->view()) return false; return handleMouseWheel(*frame, static_cast(inputEvent)); case WebInputEvent::RawKeyDown: case WebInputEvent::KeyDown: case WebInputEvent::KeyUp: return handleKeyEvent(static_cast(inputEvent)); case WebInputEvent::Char: return handleCharEvent(static_cast(inputEvent)); case WebInputEvent::GestureScrollBegin: case WebInputEvent::GestureScrollEnd: case WebInputEvent::GestureScrollUpdate: case WebInputEvent::GestureScrollUpdateWithoutPropagation: case WebInputEvent::GestureFlingStart: case WebInputEvent::GestureFlingCancel: case WebInputEvent::GestureTap: case WebInputEvent::GestureTapUnconfirmed: case WebInputEvent::GestureTapDown: case WebInputEvent::GestureShowPress: case WebInputEvent::GestureTapCancel: case WebInputEvent::GestureDoubleTap: case WebInputEvent::GestureTwoFingerTap: case WebInputEvent::GestureLongPress: case WebInputEvent::GestureLongTap: return handleGestureEvent(static_cast(inputEvent)); case WebInputEvent::TouchStart: case WebInputEvent::TouchMove: case WebInputEvent::TouchEnd: case WebInputEvent::TouchCancel: if (!frame || !frame->view()) return false; return handleTouchEvent(*frame, static_cast(inputEvent)); case WebInputEvent::GesturePinchBegin: case WebInputEvent::GesturePinchEnd: case WebInputEvent::GesturePinchUpdate: // FIXME: Once PlatformGestureEvent is updated to support pinch, this // should call handleGestureEvent, just like it currently does for // gesture scroll. return false; default: return false; } } void WebViewImpl::mouseCaptureLost() { TRACE_EVENT_ASYNC_END0("input", "capturing mouse", this); m_mouseCaptureNode = nullptr; } void WebViewImpl::setFocus(bool enable) { m_page->focusController().setFocused(enable); if (enable) { m_page->focusController().setActive(true); RefPtr focusedFrame = m_page->focusController().focusedFrame(); if (focusedFrame) { LocalFrame* localFrame = focusedFrame.get(); Element* element = localFrame->document()->focusedElement(); if (element && localFrame->selection().selection().isNone()) { // If the selection was cleared while the WebView was not // focused, then the focus element shows with a focus ring but // no caret and does respond to keyboard inputs. if (element->isContentEditable()) { // updateFocusAppearance() selects all the text of // contentseditable DIVs. So we set the selection explicitly // instead. Note that this has the side effect of moving the // caret back to the beginning of the text. Position position(element, 0, Position::PositionIsOffsetInAnchor); localFrame->selection().setSelection(VisibleSelection(position, SEL_DEFAULT_AFFINITY)); } } } m_imeAcceptEvents = true; } else { // Clear focus on the currently focused frame if any. if (!m_page) return; RefPtr focusedFrame = m_page->focusController().focusedFrame(); if (focusedFrame) { // Finish an ongoing composition to delete the composition node. if (focusedFrame->inputMethodController().hasComposition()) { focusedFrame->inputMethodController().confirmComposition(); } m_imeAcceptEvents = false; } } } bool WebViewImpl::setComposition( const WebString& text, const WebVector& underlines, int selectionStart, int selectionEnd) { LocalFrame* focused = focusedCoreFrame(); if (!focused || !m_imeAcceptEvents) return false; // The input focus has been moved to another WebWidget object. // We should use this |editor| object only to complete the ongoing // composition. InputMethodController& inputMethodController = focused->inputMethodController(); if (!focused->editor().canEdit() && !inputMethodController.hasComposition()) return false; // We should verify the parent node of this IME composition node are // editable because JavaScript may delete a parent node of the composition // node. In this case, WebKit crashes while deleting texts from the parent // node, which doesn't exist any longer. RefPtr range = inputMethodController.compositionRange(); if (range) { Node* node = range->startContainer(); if (!node || !node->isContentEditable()) return false; } // If we're not going to fire a keypress event, then the keydown event was // canceled. In that case, cancel any existing composition. if (text.isEmpty() || m_suppressNextKeypressEvent) { // A browser process sent an IPC message which does not contain a valid // string, which means an ongoing composition has been canceled. // If the ongoing composition has been canceled, replace the ongoing // composition string with an empty string and complete it. String emptyString; Vector emptyUnderlines; inputMethodController.setComposition(emptyString, emptyUnderlines, 0, 0); return text.isEmpty(); } // When the range of composition underlines overlap with the range between // selectionStart and selectionEnd, WebKit somehow won't paint the selection // at all (see InlineTextBox::paint() function in InlineTextBox.cpp). // But the selection range actually takes effect. inputMethodController.setComposition(String(text), CompositionUnderlineVectorBuilder(underlines), selectionStart, selectionEnd); return inputMethodController.hasComposition(); } bool WebViewImpl::confirmComposition() { return confirmComposition(DoNotKeepSelection); } bool WebViewImpl::confirmComposition(ConfirmCompositionBehavior selectionBehavior) { return confirmComposition(WebString(), selectionBehavior); } bool WebViewImpl::confirmComposition(const WebString& text) { return confirmComposition(text, DoNotKeepSelection); } bool WebViewImpl::confirmComposition(const WebString& text, ConfirmCompositionBehavior selectionBehavior) { LocalFrame* focused = focusedCoreFrame(); if (!focused || !m_imeAcceptEvents) return false; return focused->inputMethodController().confirmCompositionOrInsertText(text, selectionBehavior == KeepSelection ? InputMethodController::KeepSelection : InputMethodController::DoNotKeepSelection); } bool WebViewImpl::compositionRange(size_t* location, size_t* length) { LocalFrame* focused = focusedCoreFrame(); if (!focused || !m_imeAcceptEvents) return false; RefPtr range = focused->inputMethodController().compositionRange(); if (!range) return false; Element* editable = focused->selection().rootEditableElementOrDocumentElement(); ASSERT(editable); PlainTextRange plainTextRange(PlainTextRange::create(*editable, *range.get())); if (plainTextRange.isNull()) return false; *location = plainTextRange.start(); *length = plainTextRange.length(); return true; } WebTextInputInfo WebViewImpl::textInputInfo() { WebTextInputInfo info; LocalFrame* focused = focusedCoreFrame(); if (!focused) return info; FrameSelection& selection = focused->selection(); Element* element = selection.selection().rootEditableElement(); if (!element) return info; info.inputMode = inputModeOfFocusedElement(); info.type = textInputType(); info.flags = textInputFlags(); if (info.type == WebTextInputTypeNone) return info; if (!focused->editor().canEdit()) return info; // Emits an object replacement character for each replaced element so that // it is exposed to IME and thus could be deleted by IME on android. info.value = plainText(rangeOfContents(element).get(), TextIteratorEmitsObjectReplacementCharacter); if (info.value.isEmpty()) return info; if (RefPtr range = selection.selection().firstRange()) { PlainTextRange plainTextRange(PlainTextRange::create(*element, *range.get())); if (plainTextRange.isNotNull()) { info.selectionStart = plainTextRange.start(); info.selectionEnd = plainTextRange.end(); } } if (RefPtr range = focused->inputMethodController().compositionRange()) { PlainTextRange plainTextRange(PlainTextRange::create(*element, *range.get())); if (plainTextRange.isNotNull()) { info.compositionStart = plainTextRange.start(); info.compositionEnd = plainTextRange.end(); } } return info; } WebTextInputType WebViewImpl::textInputType() { Element* element = focusedElement(); if (!element) return WebTextInputTypeNone; if (element->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable)) return WebTextInputTypeContentEditable; return WebTextInputTypeNone; } int WebViewImpl::textInputFlags() { Element* element = focusedElement(); if (!element) return WebTextInputFlagNone; int flags = 0; const AtomicString& autocomplete = element->getAttribute("autocomplete"); if (autocomplete == "on") flags |= WebTextInputFlagAutocompleteOn; else if (autocomplete == "off") flags |= WebTextInputFlagAutocompleteOff; const AtomicString& autocorrect = element->getAttribute("autocorrect"); if (autocorrect == "on") flags |= WebTextInputFlagAutocorrectOn; else if (autocorrect == "off") flags |= WebTextInputFlagAutocorrectOff; const AtomicString& spellcheck = element->getAttribute("spellcheck"); if (spellcheck == "on") flags |= WebTextInputFlagSpellcheckOn; else if (spellcheck == "off") flags |= WebTextInputFlagSpellcheckOff; return flags; } WebString WebViewImpl::inputModeOfFocusedElement() { return WebString(); } InputMethodContext* WebViewImpl::inputMethodContext() { if (!m_imeAcceptEvents) return 0; LocalFrame* focusedFrame = focusedCoreFrame(); if (!focusedFrame) return 0; Element* target = focusedFrame->document()->focusedElement(); if (target && target->hasInputMethodContext()) return &target->inputMethodContext(); return 0; } void WebViewImpl::didShowCandidateWindow() { if (InputMethodContext* context = inputMethodContext()) context->dispatchCandidateWindowShowEvent(); } void WebViewImpl::didUpdateCandidateWindow() { if (InputMethodContext* context = inputMethodContext()) context->dispatchCandidateWindowUpdateEvent(); } void WebViewImpl::didHideCandidateWindow() { if (InputMethodContext* context = inputMethodContext()) context->dispatchCandidateWindowHideEvent(); } WebVector WebViewImpl::compositionUnderlines() const { const LocalFrame* focused = focusedCoreFrame(); if (!focused) return WebVector(); const Vector& underlines = focused->inputMethodController().customCompositionUnderlines(); WebVector results(underlines.size()); for (size_t index = 0; index < underlines.size(); ++index) { CompositionUnderline underline = underlines[index]; results[index] = WebCompositionUnderline(underline.startOffset, underline.endOffset, static_cast(underline.color.rgb()), underline.thick, static_cast(underline.backgroundColor.rgb())); } return results; } WebColor WebViewImpl::backgroundColor() const { if (isTransparent()) return Color::transparent; if (!m_page) return m_baseBackgroundColor; if (!m_page->mainFrame()) return m_baseBackgroundColor; FrameView* view = m_page->mainFrame()->view(); return view->documentBackgroundColor().rgb(); } // WebView -------------------------------------------------------------------- WebSettingsImpl* WebViewImpl::settingsImpl() { if (!m_webSettings) m_webSettings = adoptPtr(new WebSettingsImpl(&m_page->settings())); ASSERT(m_webSettings); return m_webSettings.get(); } WebSettings* WebViewImpl::settings() { return settingsImpl(); } WebFrame* WebViewImpl::mainFrame() { return WebFrame::fromFrame(m_page ? m_page->mainFrame() : 0); } WebFrame* WebViewImpl::focusedFrame() { return WebFrame::fromFrame(focusedCoreFrame()); } void WebViewImpl::injectModule(const WebString& path) { RefPtr document = m_page->mainFrame()->document(); RefPtr import = HTMLImportElement::create(*document); import->setAttribute(HTMLNames::srcAttr, path); if (!document->documentElement()) return; document->documentElement()->appendChild(import.release()); } void WebViewImpl::setFocusedFrame(WebFrame* frame) { if (!frame) { // Clears the focused frame if any. LocalFrame* focusedFrame = focusedCoreFrame(); if (focusedFrame) focusedFrame->selection().setFocused(false); return; } LocalFrame* coreFrame = toWebLocalFrameImpl(frame)->frame(); coreFrame->page()->focusController().setFocusedFrame(coreFrame); } void WebViewImpl::setInitialFocus(bool reverse) { if (!m_page) return; LocalFrame* frame = page()->focusController().focusedOrMainFrame(); if (Document* document = frame->document()) document->setFocusedElement(nullptr); page()->focusController().setInitialFocus(reverse ? FocusTypeBackward : FocusTypeForward); } void WebViewImpl::clearFocusedElement() { RefPtr localFrame = focusedCoreFrame(); if (!localFrame) return; RefPtr document = localFrame->document(); if (!document) return; RefPtr oldFocusedElement = document->focusedElement(); // Clear the focused node. document->setFocusedElement(nullptr); if (!oldFocusedElement) return; // If a text field has focus, we need to make sure the selection controller // knows to remove selection from it. Otherwise, the text field is still // processing keyboard events even though focus has been moved to the page and // keystrokes get eaten as a result. if (oldFocusedElement->isContentEditable()) localFrame->selection().clear(); } void WebViewImpl::advanceFocus(bool reverse) { page()->focusController().advanceFocus(reverse ? FocusTypeBackward : FocusTypeForward); } IntPoint WebViewImpl::clampOffsetAtScale(const IntPoint& offset, float scale) { FrameView* view = mainFrameImpl()->frameView(); if (!view) return offset; return view->clampOffsetAtScale(offset, scale); } float WebViewImpl::deviceScaleFactor() const { if (!page()) return 1; return page()->deviceScaleFactor(); } void WebViewImpl::setDeviceScaleFactor(float scaleFactor) { if (!page()) return; page()->setDeviceScaleFactor(scaleFactor); } void WebViewImpl::updateMainFrameLayoutSize() { if (m_fixedLayoutSizeLock || !mainFrameImpl()) return; RefPtr view = mainFrameImpl()->frameView(); if (!view) return; WebSize layoutSize = m_size; if (page()->settings().forceZeroLayoutHeight()) layoutSize.height = 0; view->setLayoutSize(layoutSize); } IntSize WebViewImpl::contentsSize() const { RenderView* root = page()->mainFrame()->contentRenderer(); if (!root) return IntSize(); return root->documentRect().size(); } WebHitTestResult WebViewImpl::hitTestResultAt(const WebPoint& point) { return coreHitTestResultAt(point); } HitTestResult WebViewImpl::coreHitTestResultAt(const WebPoint& point) { IntPoint scaledPoint = point; return hitTestResultForWindowPos(scaledPoint); } void WebViewImpl::spellingMarkers(WebVector* markers) { Vector result; LocalFrame* frame = m_page->mainFrame(); const DocumentMarkerVector& documentMarkers = frame->document()->markers().markers(); for (size_t i = 0; i < documentMarkers.size(); ++i) result.append(documentMarkers[i]->hash()); markers->assign(result); } void WebViewImpl::removeSpellingMarkersUnderWords(const WebVector& words) { Vector convertedWords; convertedWords.append(words.data(), words.size()); LocalFrame* frame = m_page->mainFrame(); frame->removeSpellingMarkersUnderWords(convertedWords); } void WebViewImpl::sendResizeEventAndRepaint() { // FIXME: This is wrong. The FrameView is responsible sending a resizeEvent // as part of layout. Layout is also responsible for sending invalidations // to the embedder. This method and all callers may be wrong. -- eseidel. if (m_page->mainFrame()->view()) { // Enqueues the resize event. m_page->mainFrame()->document()->enqueueResizeEvent(); } } void WebViewImpl::setIsTransparent(bool isTransparent) { // Set any existing frames to be transparent. m_page->mainFrame()->view()->setTransparent(isTransparent); // Future frames check this to know whether to be transparent. m_isTransparent = isTransparent; } bool WebViewImpl::isTransparent() const { return m_isTransparent; } // FIXME(sky): This is an android webview feature. Remove it. void WebViewImpl::setBaseBackgroundColor(WebColor color) { layout(); if (m_baseBackgroundColor == color) return; m_baseBackgroundColor = color; if (m_page->mainFrame()) m_page->mainFrame()->view()->setBaseBackgroundColor(color); } void WebViewImpl::setIsActive(bool active) { if (page()) page()->focusController().setActive(active); } bool WebViewImpl::isActive() const { return page() ? page()->focusController().isActive() : false; } void WebViewImpl::didCommitLoad(bool isNewNavigation, bool isNavigationWithinPage) { m_userGestureObserved = false; if (!isNavigationWithinPage) UserGestureIndicator::clearProcessedUserGestureSinceLoad(); } void WebViewImpl::layoutUpdated(WebLocalFrameImpl* webframe) { if (!m_client) return; m_client->didUpdateLayout(); } void WebViewImpl::setBackgroundColorOverride(WebColor color) { m_backgroundColorOverride = color; } Element* WebViewImpl::focusedElement() const { LocalFrame* frame = m_page->focusController().focusedFrame(); if (!frame) return 0; Document* document = frame->document(); if (!document) return 0; return document->focusedElement(); } HitTestResult WebViewImpl::hitTestResultForWindowPos(const IntPoint& pos) { IntPoint docPoint(m_page->mainFrame()->view()->windowToContents(pos)); HitTestResult result = m_page->mainFrame()->eventHandler().hitTestResultAtPoint(docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active); return result; } void WebViewImpl::scheduleAnimation() { m_client->scheduleAnimation(); } void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState, bool isInitialState) { if (!page()) return; ASSERT(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden); m_page->setVisibilityState(static_cast(static_cast(visibilityState)), isInitialState); } } // namespace blink