/* * 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 "config.h" #include "web/WebViewImpl.h" #include "core/CSSValueKeywords.h" #include "core/HTMLNames.h" #include "core/dom/Document.h" #include "core/dom/DocumentMarkerController.h" #include "core/dom/NodeRenderingTraversal.h" #include "core/dom/Text.h" #include "core/editing/Editor.h" #include "core/editing/FrameSelection.h" #include "core/editing/HTMLInterchange.h" #include "core/editing/InputMethodController.h" #include "core/editing/TextIterator.h" #include "core/editing/markup.h" #include "core/events/KeyboardEvent.h" #include "core/events/WheelEvent.h" #include "core/frame/EventHandlerRegistry.h" #include "core/frame/FrameHost.h" #include "core/frame/FrameView.h" #include "core/frame/LocalFrame.h" #include "core/frame/Settings.h" #include "core/html/HTMLImportElement.h" #include "core/html/ime/InputMethodContext.h" #include "core/loader/FrameLoader.h" #include "core/loader/UniqueIdentifier.h" #include "core/page/Chrome.h" #include "core/page/EventHandler.h" #include "core/page/EventWithHitTestResults.h" #include "core/page/FocusController.h" #include "core/page/Page.h" #include "core/page/TouchDisambiguation.h" #include "core/rendering/RenderView.h" #include "core/rendering/compositing/RenderLayerCompositor.h" #include "platform/Cursor.h" #include "platform/KeyboardCodes.h" #include "platform/Logging.h" #include "platform/NotImplemented.h" #include "platform/PlatformGestureEvent.h" #include "platform/PlatformKeyboardEvent.h" #include "platform/PlatformMouseEvent.h" #include "platform/PlatformWheelEvent.h" #include "platform/RuntimeEnabledFeatures.h" #include "platform/TraceEvent.h" #include "platform/UserGestureIndicator.h" #include "platform/exported/WebActiveGestureAnimation.h" #include "platform/fonts/FontCache.h" #include "platform/graphics/Color.h" #include "platform/graphics/Image.h" #include "platform/graphics/ImageBuffer.h" #include "platform/scroll/Scrollbar.h" #include "platform/weborigin/SchemeRegistry.h" #include "public/platform/Platform.h" #include "public/platform/WebFloatPoint.h" #include "public/platform/WebGestureCurve.h" #include "public/platform/WebImage.h" #include "public/platform/WebLayerTreeView.h" #include "public/platform/WebURLRequest.h" #include "public/platform/WebVector.h" #include "public/web/WebActiveWheelFlingParameters.h" #include "public/web/WebBeginFrameArgs.h" #include "public/web/WebFrameClient.h" #include "public/web/WebHitTestResult.h" #include "public/web/WebNode.h" #include "public/web/WebRange.h" #include "public/web/WebTextInputInfo.h" #include "public/web/WebViewClient.h" #include "web/CompositionUnderlineVectorBuilder.h" #include "web/GraphicsLayerFactoryChromium.h" #include "web/LinkHighlight.h" #include "web/WebInputEventConversion.h" #include "web/WebLocalFrameImpl.h" #include "web/WebSettingsImpl.h" #include "web/painting/ContinuousPainter.h" #include "wtf/CurrentTime.h" #include "wtf/RefPtr.h" #include "wtf/TemporaryChange.h" // Get rid of WTF's pow define so we can use std::pow. #undef pow #include // for std::pow namespace blink { // Change the text zoom level by kTextSizeMultiplierRatio each time the user // zooms text in or out (ie., change by 20%). The min and max values limit // text zoom to half and 3x the original text size. These three values match // those in Apple's port in WebKit/WebKit/WebView/WebView.mm const double WebView::textSizeMultiplierRatio = 1.2; const double WebView::minTextSizeMultiplier = 0.5; const double WebView::maxTextSizeMultiplier = 3.0; // 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_zoomLevel(0) , m_minimumZoomLevel(zoomFactorToZoomLevel(minTextSizeMultiplier)) , m_maximumZoomLevel(zoomFactorToZoomLevel(maxTextSizeMultiplier)) , m_doingDragAndDrop(false) , m_ignoreInputEvents(false) , m_compositorDeviceScaleFactorOverride(0) , m_rootLayerScale(1) , m_suppressNextKeypressEvent(false) , m_imeAcceptEvents(true) , m_isTransparent(false) , m_tabsToLinks(false) , m_layerTreeView(0) , m_rootLayer(0) , m_rootGraphicsLayer(0) , m_rootTransformLayer(0) , m_graphicsLayerFactory(adoptPtr(new GraphicsLayerFactoryChromium(this))) , m_isAcceleratedCompositingActive(false) , m_layerTreeViewCommitsDeferred(false) , m_layerTreeViewClosed(false) , m_matchesHeuristicsForGpuRasterization(false) , m_recreatingGraphicsContext(false) , m_flingModifier(0) , m_flingSourceDevice(false) , m_showFPSCounter(false) , m_showPaintRects(false) , m_showDebugBorders(false) , m_continuousPaintingEnabled(false) , m_showScrollBottleneckRects(false) , m_baseBackgroundColor(Color::white) , m_backgroundColorOverride(Color::transparent) , m_zoomFactorOverride(0) , 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())); m_page->makeOrdinary(); setDeviceScaleFactor(m_client->screenInfo().deviceScaleFactor); setVisibilityState(m_client->visibilityState(), true); m_layerTreeView = m_client->initializeLayerTreeView(); } WebViewImpl::~WebViewImpl() { ASSERT(!m_page); } WebLocalFrameImpl* WebViewImpl::mainFrameImpl() { return m_page ? WebLocalFrameImpl::fromFrame(m_page->mainFrame()) : 0; } bool WebViewImpl::tabKeyCyclesThroughElements() const { ASSERT(m_page); return m_page->tabKeyCyclesThroughElements(); } void WebViewImpl::setTabKeyCyclesThroughElements(bool value) { if (m_page) m_page->setTabKeyCyclesThroughElements(value); } void WebViewImpl::handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent& event) { m_client->setMouseOverURL(WebURL()); PageWidgetEventHandler::handleMouseLeave(mainFrame, event); } void WebViewImpl::handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent& event) { m_lastMouseDownPoint = WebPoint(event.x, event.y); PageWidgetEventHandler::handleMouseDown(mainFrame, event); if (event.button == WebMouseEvent::ButtonLeft && m_mouseCaptureNode) m_mouseCaptureGestureToken = mainFrame.eventHandler().takeLastMouseDownGestureToken(); } void WebViewImpl::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event) { PageWidgetEventHandler::handleMouseUp(mainFrame, event); } bool WebViewImpl::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event) { return PageWidgetEventHandler::handleMouseWheel(mainFrame, event); } // FIXME(sky): This appears to be unused. bool WebViewImpl::scrollBy(const WebFloatSize& delta, const WebFloatSize& velocity) { if (m_flingSourceDevice == WebGestureDeviceTouchpad) { WebMouseWheelEvent syntheticWheel; const float tickDivisor = WheelEvent::TickMultiplier; syntheticWheel.deltaX = delta.width; syntheticWheel.deltaY = delta.height; syntheticWheel.wheelTicksX = delta.width / tickDivisor; syntheticWheel.wheelTicksY = delta.height / tickDivisor; syntheticWheel.hasPreciseScrollingDeltas = true; syntheticWheel.x = m_positionOnFlingStart.x; syntheticWheel.y = m_positionOnFlingStart.y; syntheticWheel.globalX = m_globalPositionOnFlingStart.x; syntheticWheel.globalY = m_globalPositionOnFlingStart.y; syntheticWheel.modifiers = m_flingModifier; if (m_page && m_page->mainFrame() && m_page->mainFrame()->view()) return handleMouseWheel(*m_page->mainFrame(), syntheticWheel); } else { WebGestureEvent syntheticGestureEvent; syntheticGestureEvent.type = WebInputEvent::GestureScrollUpdateWithoutPropagation; syntheticGestureEvent.data.scrollUpdate.deltaX = delta.width; syntheticGestureEvent.data.scrollUpdate.deltaY = delta.height; syntheticGestureEvent.x = m_positionOnFlingStart.x; syntheticGestureEvent.y = m_positionOnFlingStart.y; syntheticGestureEvent.globalX = m_globalPositionOnFlingStart.x; syntheticGestureEvent.globalY = m_globalPositionOnFlingStart.y; syntheticGestureEvent.modifiers = m_flingModifier; syntheticGestureEvent.sourceDevice = WebGestureDeviceTouchscreen; if (m_page && m_page->mainFrame() && m_page->mainFrame()->view()) return handleGestureEvent(syntheticGestureEvent); } return false; } bool WebViewImpl::handleGestureEvent(const WebGestureEvent& event) { bool eventSwallowed = false; bool eventCancelled = false; // for disambiguation // Special handling for slow-path fling gestures. switch (event.type) { case WebInputEvent::GestureFlingStart: { if (mainFrameImpl()->frame()->eventHandler().isScrollbarHandlingGestures()) break; m_client->cancelScheduledContentIntents(); m_positionOnFlingStart = WebPoint(event.x, event.y); m_globalPositionOnFlingStart = WebPoint(event.globalX, event.globalY); m_flingModifier = event.modifiers; m_flingSourceDevice = event.sourceDevice; OwnPtr flingCurve = adoptPtr(Platform::current()->createFlingAnimationCurve(event.sourceDevice, WebFloatPoint(event.data.flingStart.velocityX, event.data.flingStart.velocityY), WebSize())); ASSERT(flingCurve); m_gestureAnimation = WebActiveGestureAnimation::createAtAnimationStart(flingCurve.release(), this); scheduleAnimation(); eventSwallowed = true; m_client->didHandleGestureEvent(event, eventCancelled); return eventSwallowed; } case WebInputEvent::GestureFlingCancel: if (endActiveFlingAnimation()) eventSwallowed = true; m_client->didHandleGestureEvent(event, eventCancelled); return eventSwallowed; default: break; } 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. // Handle link highlighting outside the main switch to avoid getting lost in the // complicated set of cases handled below. switch (event.type) { case WebInputEvent::GestureShowPress: // Queue a highlight animation, then hand off to regular handler. enableTapHighlightAtPoint(platformEvent); break; case WebInputEvent::GestureTapCancel: case WebInputEvent::GestureTap: case WebInputEvent::GestureLongPress: for (size_t i = 0; i < m_linkHighlights.size(); ++i) m_linkHighlights[i]->startHighlightAnimationIfNeeded(); break; default: break; } switch (event.type) { case WebInputEvent::GestureTap: { m_client->cancelScheduledContentIntents(); if (detectContentOnTouch(platformEvent.position())) { eventSwallowed = true; break; } // Don't trigger a disambiguation popup on sites designed for mobile devices. // Instead, assume that the page has been designed with big enough buttons and links. if (event.data.tap.width > 0 && !shouldDisableDesktopWorkarounds()) { // FIXME: didTapMultipleTargets should just take a rect instead of // an event. WebGestureEvent scaledEvent = event; IntRect boundingBox(scaledEvent.x - scaledEvent.data.tap.width / 2, scaledEvent.y - scaledEvent.data.tap.height / 2, scaledEvent.data.tap.width, scaledEvent.data.tap.height); Vector goodTargets; Vector > highlightNodes; findGoodTouchTargets(boundingBox, mainFrameImpl()->frame(), goodTargets, highlightNodes); // FIXME: replace touch adjustment code when numberOfGoodTargets == 1? // Single candidate case is currently handled by: https://bugs.webkit.org/show_bug.cgi?id=85101 if (goodTargets.size() >= 2 && m_client && m_client->didTapMultipleTargets(scaledEvent, goodTargets)) { enableTapHighlights(highlightNodes); for (size_t i = 0; i < m_linkHighlights.size(); ++i) m_linkHighlights[i]->startHighlightAnimationIfNeeded(); eventSwallowed = true; eventCancelled = true; break; } } 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::transferActiveWheelFlingAnimation(const WebActiveWheelFlingParameters& parameters) { TRACE_EVENT0("blink", "WebViewImpl::transferActiveWheelFlingAnimation"); ASSERT(!m_gestureAnimation); m_positionOnFlingStart = parameters.point; m_globalPositionOnFlingStart = parameters.globalPoint; m_flingModifier = parameters.modifiers; OwnPtr curve = adoptPtr(Platform::current()->createFlingAnimationCurve(parameters.sourceDevice, WebFloatPoint(parameters.delta), parameters.cumulativeScroll)); ASSERT(curve); m_gestureAnimation = WebActiveGestureAnimation::createWithTimeOffset(curve.release(), this, parameters.startTime); scheduleAnimation(); } bool WebViewImpl::endActiveFlingAnimation() { if (m_gestureAnimation) { m_gestureAnimation.clear(); if (m_layerTreeView) m_layerTreeView->didStopFlinging(); return true; } return false; } void WebViewImpl::setShowFPSCounter(bool show) { if (m_layerTreeView) { TRACE_EVENT0("blink", "WebViewImpl::setShowFPSCounter"); m_layerTreeView->setShowFPSCounter(show); } m_showFPSCounter = show; } void WebViewImpl::setShowPaintRects(bool show) { if (m_layerTreeView) { TRACE_EVENT0("blink", "WebViewImpl::setShowPaintRects"); m_layerTreeView->setShowPaintRects(show); } m_showPaintRects = show; } void WebViewImpl::setShowDebugBorders(bool show) { if (m_layerTreeView) m_layerTreeView->setShowDebugBorders(show); m_showDebugBorders = show; } void WebViewImpl::setContinuousPaintingEnabled(bool enabled) { if (m_layerTreeView) { TRACE_EVENT0("blink", "WebViewImpl::setContinuousPaintingEnabled"); m_layerTreeView->setContinuousPaintingEnabled(enabled); } m_continuousPaintingEnabled = enabled; m_client->scheduleAnimation(); } void WebViewImpl::setShowScrollBottleneckRects(bool show) { if (m_layerTreeView) m_layerTreeView->setShowScrollBottleneckRects(show); m_showScrollBottleneckRects = show; } void WebViewImpl::getSelectionRootBounds(WebRect& bounds) const { const LocalFrame* frame = focusedCoreFrame(); if (!frame) return; Element* root = frame->selection().rootEditableElementOrDocumentElement(); if (!root) return; IntRect boundingBox = root->pixelSnappedBoundingBox(); boundingBox = root->document().frame()->view()->contentsToWindow(boundingBox); bounds = boundingBox; } 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)); // Halt an in-progress fling on a key event. endActiveFlingAnimation(); // 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; // Accesskeys are triggered by char events and can't be suppressed. if (handler.handleAccessKey(evt)) 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; } WebRect WebViewImpl::computeBlockBounds(const WebRect& rect, bool ignoreClipping) { if (!mainFrameImpl()) return WebRect(); // Use the rect-based hit test to find the node. IntPoint point = mainFrameImpl()->frameView()->windowToContents(IntPoint(rect.x, rect.y)); HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | (ignoreClipping ? HitTestRequest::IgnoreClipping : 0); HitTestResult result = mainFrameImpl()->frame()->eventHandler().hitTestResultAtPoint(point, hitType, IntSize(rect.width, rect.height)); Node* node = result.innerNonSharedNode(); if (!node) return WebRect(); // Find the block type node based on the hit node. // FIXME: This wants to walk composed tree with NodeRenderingTraversal::parent(). while (node && (!node->renderer() || node->renderer()->isInline())) node = NodeRenderingTraversal::parent(node); // Return the bounding box in the window coordinate system. if (node) { IntRect rect = node->Node::pixelSnappedBoundingBox(); LocalFrame* frame = node->document().frame(); return frame->view()->contentsToWindow(rect); } return WebRect(); } WebRect WebViewImpl::widenRectWithinPageBounds(const WebRect& source, int targetMargin, int minimumMargin) { WebSize maxSize; if (mainFrame()) maxSize = mainFrame()->contentsSize(); int leftMargin = targetMargin; int rightMargin = targetMargin; const int absoluteSourceX = source.x; if (leftMargin > absoluteSourceX) { leftMargin = absoluteSourceX; rightMargin = std::max(leftMargin, minimumMargin); } const int maximumRightMargin = maxSize.width - (source.width + absoluteSourceX); if (rightMargin > maximumRightMargin) { rightMargin = maximumRightMargin; leftMargin = std::min(leftMargin, std::max(rightMargin, minimumMargin)); } const int newWidth = source.width + leftMargin + rightMargin; const int newX = source.x - leftMargin; ASSERT(newWidth >= 0); ASSERT(newX + newWidth <= maxSize.width); return WebRect(newX, source.y, newWidth, source.height); } void WebViewImpl::computeScaleAndScrollForBlockRect(const WebPoint& hitPoint, const WebRect& blockRect, float padding, float defaultScaleWhenAlreadyLegible, float& scale, WebPoint& scroll) { //FIXME(sky) } static Node* findCursorDefiningAncestor(Node* node, LocalFrame* frame) { // Go up the tree to find the node that defines a mouse cursor style while (node) { if (node->renderer()) { ECursor cursor = node->renderer()->style()->cursor(); if (cursor != CURSOR_AUTO || frame->eventHandler().useHandCursor(node, node->isLink())) break; } node = NodeRenderingTraversal::parent(node); } return node; } static bool showsHandCursor(Node* node, LocalFrame* frame) { if (!node || !node->renderer()) return false; ECursor cursor = node->renderer()->style()->cursor(); return cursor == CURSOR_POINTER || (cursor == CURSOR_AUTO && frame->eventHandler().useHandCursor(node, node->isLink())); } Node* WebViewImpl::bestTapNode(const PlatformGestureEvent& tapEvent) { TRACE_EVENT0("input", "WebViewImpl::bestTapNode"); if (!m_page || !m_page->mainFrame()) return 0; // FIXME: Rely on earlier hit test instead of hit testing again. GestureEventWithHitTestResults targetedEvent = m_page->mainFrame()->eventHandler().targetGestureEvent(tapEvent, true); Node* bestTouchNode = targetedEvent.hitTestResult().targetNode(); // We might hit something like an image map that has no renderer on it // Walk up the tree until we have a node with an attached renderer // FIXME: This wants to walk composed tree with NodeRenderingTraversal::parent(). while (bestTouchNode && !bestTouchNode->renderer()) bestTouchNode = NodeRenderingTraversal::parent(bestTouchNode); Node* cursorDefiningAncestor = findCursorDefiningAncestor(bestTouchNode, m_page->mainFrame()); // We show a highlight on tap only when the current node shows a hand cursor if (!cursorDefiningAncestor || !showsHandCursor(cursorDefiningAncestor, m_page->mainFrame())) { return 0; } // We should pick the largest enclosing node with hand cursor set. We do this by first jumping // up to cursorDefiningAncestor (which is already known to have hand cursor set). Then we locate // the next cursor-defining ancestor up in the the tree and repeat the jumps as long as the node // has hand cursor set. do { bestTouchNode = cursorDefiningAncestor; cursorDefiningAncestor = findCursorDefiningAncestor(NodeRenderingTraversal::parent(bestTouchNode), m_page->mainFrame()); } while (cursorDefiningAncestor && showsHandCursor(cursorDefiningAncestor, m_page->mainFrame())); return bestTouchNode; } void WebViewImpl::enableTapHighlightAtPoint(const PlatformGestureEvent& tapEvent) { Node* touchNode = bestTapNode(tapEvent); Vector > highlightNodes; highlightNodes.append(touchNode); enableTapHighlights(highlightNodes); } void WebViewImpl::enableTapHighlights(Vector >& highlightNodes) { if (highlightNodes.isEmpty()) return; // Always clear any existing highlight when this is invoked, even if we // don't get a new target to highlight. m_linkHighlights.clear(); // LinkHighlight reads out layout and compositing state, so we need to make sure that's all up to date. layout(); for (size_t i = 0; i < highlightNodes.size(); ++i) { Node* node = highlightNodes[i]; if (!node || !node->renderer()) continue; Color highlightColor = node->renderer()->style()->tapHighlightColor(); // Safari documentation for -webkit-tap-highlight-color says if the specified color has 0 alpha, // then tap highlighting is disabled. // http://developer.apple.com/library/safari/#documentation/appleapplications/reference/safaricssref/articles/standardcssproperties.html if (!highlightColor.alpha()) continue; m_linkHighlights.append(LinkHighlight::create(node, this)); } } void WebViewImpl::animateDoubleTapZoom(const IntPoint& point) { //FIXME(sky) } void WebViewImpl::zoomToFindInPageRect(const WebRect& rect) { //FIXME(sky) } bool WebViewImpl::zoomToMultipleTargetsRect(const WebRect& rect) { return false; } void WebViewImpl::hasTouchEventHandlers(bool hasTouchHandlers) { m_client->hasTouchEventHandlers(hasTouchHandlers); } bool WebViewImpl::hasTouchEventHandlersAt(const WebPoint& point) { // FIXME: Implement this. Note that the point must be divided by pageScaleFactor. 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) { #if !OS(MACOSX) case 'A': focusedFrame()->executeCommand(WebString::fromUTF8("SelectAll")); return true; case VKEY_INSERT: case 'C': focusedFrame()->executeCommand(WebString::fromUTF8("Copy")); return true; #endif // 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 OS(MACOSX) // Control-Up/Down should be PageUp/Down on Mac. if (modifiers & WebMouseEvent::ControlKey) { if (keyCode == VKEY_UP) keyCode = VKEY_PRIOR; else if (keyCode == VKEY_DOWN) keyCode = VKEY_NEXT; } #endif 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 } void WebViewImpl::willStartLiveResize() { // FIXME(sky): Remove } WebSize WebViewImpl::size() { return m_size; } WebLocalFrameImpl* WebViewImpl::localFrameRootTemporary() const { // FIXME(sky): remove return WebLocalFrameImpl::fromFrame(page()->mainFrame()); } 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 (localFrameRootTemporary()->frameView()) localFrameRootTemporary()->frameView()->resize(m_size); } void WebViewImpl::resize(const WebSize& newSize) { if (m_size == newSize) return; FrameView* view = localFrameRootTemporary()->frameView(); if (!view) return; m_size = newSize; performResize(); sendResizeEventAndRepaint(); } void WebViewImpl::willEndLiveResize() { // FIXME(sky): Remove } void WebViewImpl::beginFrame(const WebBeginFrameArgs& frameTime) { TRACE_EVENT0("blink", "WebViewImpl::beginFrame"); WebBeginFrameArgs validFrameTime(frameTime); if (!validFrameTime.lastFrameTimeMonotonic) validFrameTime.lastFrameTimeMonotonic = monotonicallyIncreasingTime(); // Create synthetic wheel events as necessary for fling. if (m_gestureAnimation) { if (m_gestureAnimation->animate(validFrameTime.lastFrameTimeMonotonic)) scheduleAnimation(); else { endActiveFlingAnimation(); PlatformGestureEvent endScrollEvent(PlatformEvent::GestureScrollEnd, m_positionOnFlingStart, m_globalPositionOnFlingStart, IntSize(), 0, false, false, false, false, 0, 0, 0, 0); mainFrameImpl()->frame()->eventHandler().handleGestureScrollEnd(endScrollEvent); } } WTF_LOG(ScriptedAnimationController, "WebViewImpl::beginFrame: page = %d", !m_page ? 0 : 1); if (!m_page) return; PageWidgetDelegate::animate(m_page.get(), validFrameTime.lastFrameTimeMonotonic); if (m_continuousPaintingEnabled) { ContinuousPainter::setNeedsDisplayRecursive(m_rootGraphicsLayer); m_client->scheduleAnimation(); } } void WebViewImpl::didCommitFrameToCompositor() { } void WebViewImpl::layout() { TRACE_EVENT0("blink", "WebViewImpl::layout"); if (!localFrameRootTemporary()) return; PageWidgetDelegate::layout(m_page.get(), localFrameRootTemporary()->frame()); updateLayerTreeBackgroundColor(); for (size_t i = 0; i < m_linkHighlights.size(); ++i) m_linkHighlights[i]->updateGeometry(); } void WebViewImpl::paint(WebCanvas* canvas, const WebRect& rect) { // This should only be used when compositing is not being used for this // WebView, and it is painting into the recording of its parent. ASSERT(!isAcceleratedCompositingActive()); double paintStart = currentTime(); PageWidgetDelegate::paint(m_page.get(), canvas, rect, isTransparent() ? PageWidgetDelegate::Translucent : PageWidgetDelegate::Opaque); double paintEnd = currentTime(); double pixelsPerSec = (rect.width * rect.height) / (paintEnd - paintStart); Platform::current()->histogramCustomCounts("Renderer4.SoftwarePaintDurationMS", (paintEnd - paintStart) * 1000, 0, 120, 30); Platform::current()->histogramCustomCounts("Renderer4.SoftwarePaintMegapixPerSecond", pixelsPerSec / 1000000, 10, 210, 30); } #if OS(ANDROID) void WebViewImpl::paintCompositedDeprecated(WebCanvas* canvas, const WebRect& rect) { // Note: This method exists on OS(ANDROID) and will hopefully be // removed once the link disambiguation feature renders using // the compositor. ASSERT(isAcceleratedCompositingActive()); FrameView* view = page()->mainFrame()->view(); PaintBehavior oldPaintBehavior = view->paintBehavior(); view->setPaintBehavior(oldPaintBehavior | PaintBehaviorFlattenCompositingLayers); PageWidgetDelegate::paint(m_page.get(), canvas, rect, isTransparent() ? PageWidgetDelegate::Translucent : PageWidgetDelegate::Opaque); view->setPaintBehavior(oldPaintBehavior); } #endif void WebViewImpl::compositeAndReadbackAsync(WebCompositeAndReadbackAsyncCallback* callback) { ASSERT(isAcceleratedCompositingActive()); m_layerTreeView->compositeAndReadbackAsync(callback); } bool WebViewImpl::isTrackingRepaints() const { if (!page()) return false; FrameView* view = page()->mainFrame()->view(); return view->isTrackingPaintInvalidations(); } void WebViewImpl::themeChanged() { if (!page()) return; FrameView* view = page()->mainFrame()->view(); WebRect damagedRect(0, 0, m_size.width, m_size.height); view->invalidateRect(damagedRect); } void WebViewImpl::clearCompositedSelectionBounds() { if (m_layerTreeView) m_layerTreeView->clearSelection(); } bool WebViewImpl::hasHorizontalScrollbar() { // FIXME(sky): Remove return false; } bool WebViewImpl::hasVerticalScrollbar() { // FIXME(sky): Remove return false; } 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()); // If we've started a drag and drop operation, ignore input events until // we're done. if (m_doingDragAndDrop) return true; // Report the event to be NOT processed by WebKit, so that the browser can handle it appropriately. if (m_ignoreInputEvents) return false; 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; } return PageWidgetDelegate::handleInputEvent(m_page.get(), *this, inputEvent); } void WebViewImpl::setCursorVisibilityState(bool isVisible) { if (m_page) m_page->setIsCursorVisible(isVisible); } 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(); } bool WebViewImpl::selectionBounds(WebRect& anchor, WebRect& focus) const { const LocalFrame* localFrame = focusedCoreFrame(); if (!localFrame) return false; FrameSelection& selection = localFrame->selection(); if (selection.isCaret()) { anchor = focus = selection.absoluteCaretBounds(); } else { RefPtr selectedRange = selection.toNormalizedRange(); if (!selectedRange) return false; RefPtr range(Range::create(selectedRange->startContainer()->document(), selectedRange->startContainer(), selectedRange->startOffset(), selectedRange->startContainer(), selectedRange->startOffset())); anchor = localFrame->editor().firstRectForRange(range.get()); range = Range::create(selectedRange->endContainer()->document(), selectedRange->endContainer(), selectedRange->endOffset(), selectedRange->endContainer(), selectedRange->endOffset()); focus = localFrame->editor().firstRectForRange(range.get()); } IntRect scaledAnchor(localFrame->view()->contentsToWindow(anchor)); IntRect scaledFocus(localFrame->view()->contentsToWindow(focus)); anchor = scaledAnchor; focus = scaledFocus; if (!selection.selection().isBaseFirst()) std::swap(anchor, focus); return true; } 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(); } bool WebViewImpl::selectionTextDirection(WebTextDirection& start, WebTextDirection& end) const { const LocalFrame* frame = focusedCoreFrame(); if (!frame) return false; FrameSelection& selection = frame->selection(); if (!selection.toNormalizedRange()) return false; start = toWebTextDirection(selection.start().primaryDirection()); end = toWebTextDirection(selection.end().primaryDirection()); return true; } bool WebViewImpl::isSelectionAnchorFirst() const { if (const LocalFrame* frame = focusedCoreFrame()) return frame->selection().selection().isBaseFirst(); return false; } 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(); } bool WebViewImpl::caretOrSelectionRange(size_t* location, size_t* length) { const LocalFrame* focused = focusedCoreFrame(); if (!focused) return false; PlainTextRange selectionOffsets = focused->inputMethodController().getSelectionOffsets(); if (selectionOffsets.isNull()) return false; *location = selectionOffsets.start(); *length = selectionOffsets.length(); return true; } void WebViewImpl::setTextDirection(WebTextDirection direction) { // The Editor::setBaseWritingDirection() function checks if we can change // the text direction of the selected node and updates its DOM "dir" // attribute and its CSS "direction" property. // So, we just call the function as Safari does. const LocalFrame* focused = focusedCoreFrame(); if (!focused) return; Editor& editor = focused->editor(); if (!editor.canEdit()) return; switch (direction) { case WebTextDirectionDefault: editor.setBaseWritingDirection(NaturalWritingDirection); break; case WebTextDirectionLeftToRight: editor.setBaseWritingDirection(LeftToRightWritingDirection); break; case WebTextDirectionRightToLeft: editor.setBaseWritingDirection(RightToLeftWritingDirection); break; default: notImplemented(); break; } } bool WebViewImpl::isAcceleratedCompositingActive() const { return m_isAcceleratedCompositingActive; } void WebViewImpl::willCloseLayerTreeView() { setIsAcceleratedCompositingActive(false); m_layerTreeView = 0; m_layerTreeViewClosed = true; } // 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(); } WebString WebViewImpl::pageEncoding() const { // FIXME(sky): remove. if (!m_page) return WebString(); return m_page->mainFrame()->document()->encodingName(); } void WebViewImpl::setPageEncoding(const WebString& encodingName) { // FIXME(sky): remove } 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::scrollFocusedNodeIntoRect(const WebRect& rect) { LocalFrame* frame = page()->mainFrame(); Element* element = focusedElement(); if (!frame || !frame->view() || !element) return; float scale; IntPoint scroll; bool needAnimation; computeScaleAndScrollForFocusedNode(element, scale, scroll, needAnimation); } void WebViewImpl::computeScaleAndScrollForFocusedNode(Node* focusedNode, float& newScale, IntPoint& newScroll, bool& needAnimation) { //FIXME(sky) } void WebViewImpl::advanceFocus(bool reverse) { page()->focusController().advanceFocus(reverse ? FocusTypeBackward : FocusTypeForward); } double WebViewImpl::zoomLevel() { return m_zoomLevel; } double WebViewImpl::setZoomLevel(double zoomLevel) { if (zoomLevel < m_minimumZoomLevel) m_zoomLevel = m_minimumZoomLevel; else if (zoomLevel > m_maximumZoomLevel) m_zoomLevel = m_maximumZoomLevel; else m_zoomLevel = zoomLevel; LocalFrame* frame = mainFrameImpl()->frame(); float zoomFactor = m_zoomFactorOverride ? m_zoomFactorOverride : static_cast(zoomLevelToZoomFactor(m_zoomLevel)); frame->setPageZoomFactor(zoomFactor); return m_zoomLevel; } void WebViewImpl::zoomLimitsChanged(double minimumZoomLevel, double maximumZoomLevel) { m_minimumZoomLevel = minimumZoomLevel; m_maximumZoomLevel = maximumZoomLevel; m_client->zoomLimitsChanged(m_minimumZoomLevel, m_maximumZoomLevel); } float WebViewImpl::textZoomFactor() { return mainFrameImpl()->frame()->textZoomFactor(); } float WebViewImpl::setTextZoomFactor(float textZoomFactor) { LocalFrame* frame = mainFrameImpl()->frame(); frame->setTextZoomFactor(textZoomFactor); return textZoomFactor; } double WebView::zoomLevelToZoomFactor(double zoomLevel) { return pow(textSizeMultiplierRatio, zoomLevel); } double WebView::zoomFactorToZoomLevel(double factor) { // Since factor = 1.2^level, level = log(factor) / log(1.2) return log(factor) / log(textSizeMultiplierRatio); } IntPoint WebViewImpl::clampOffsetAtScale(const IntPoint& offset, float scale) { FrameView* view = mainFrameImpl()->frameView(); if (!view) return offset; return view->clampOffsetAtScale(offset, scale); } void WebViewImpl::setMainFrameScrollOffset(const WebPoint& origin) { updateMainFrameScrollPosition(origin, false); } float WebViewImpl::deviceScaleFactor() const { if (!page()) return 1; return page()->deviceScaleFactor(); } void WebViewImpl::setDeviceScaleFactor(float scaleFactor) { if (!page()) return; page()->setDeviceScaleFactor(scaleFactor); if (m_layerTreeView) updateLayerTreeDeviceScaleFactor(); } 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(); } WebSize WebViewImpl::contentsPreferredMinimumSize() { Document* document = m_page->mainFrame()->document(); if (!document || !document->renderView() || !document->documentElement()) return WebSize(); layout(); FontCachePurgePreventer fontCachePurgePreventer; // Required by minPreferredLogicalWidth(). IntSize preferredMinimumSize(document->renderView()->minPreferredLogicalWidth(), document->documentElement()->scrollHeight()); preferredMinimumSize.scale(zoomLevelToZoomFactor(zoomLevel())); return preferredMinimumSize; } void WebViewImpl::resetScrollAndScaleState() { // FIXME(sky): Remove } void WebViewImpl::setFixedLayoutSize(const WebSize& layoutSize) { if (!page()) return; LocalFrame* frame = page()->mainFrame(); if (!frame) return; RefPtr view = frame->view(); if (!view) return; m_fixedLayoutSizeLock = layoutSize.width || layoutSize.height; if (m_fixedLayoutSizeLock) view->setLayoutSize(layoutSize); else updateMainFrameLayoutSize(); } WebHitTestResult WebViewImpl::hitTestResultAt(const WebPoint& point) { return coreHitTestResultAt(point); } HitTestResult WebViewImpl::coreHitTestResultAt(const WebPoint& point) { IntPoint scaledPoint = point; return hitTestResultForWindowPos(scaledPoint); } void WebViewImpl::copyImageAt(const WebPoint& point) { if (!m_page) return; HitTestResult result = hitTestResultForWindowPos(point); if (result.absoluteImageURLIncludingCanvasDataURL().isEmpty()) { // There isn't actually an image at these coordinates. Might be because // the window scrolled while the context menu was open or because the page // changed itself between when we thought there was an image here and when // we actually tried to retreive the image. // // FIXME: implement a cache of the most recent HitTestResult to avoid having // to do two hit tests. return; } m_page->mainFrame()->editor().copyImage(result); } void WebViewImpl::saveImageAt(const WebPoint& point) { if (!m_page) return; KURL url = hitTestResultForWindowPos(point).absoluteImageURLIncludingCanvasDataURL(); if (url.isEmpty()) return; ResourceRequest request(url); request.setRequestContext(WebURLRequest::RequestContextDownload); m_page->mainFrame()->loaderClient()->loadURLExternally( request, NavigationPolicyDownloadTo, WebString()); } void WebViewImpl::dragSourceSystemDragEnded() { // FIXME(sky): Remove // It's possible for us to get this callback while not doing a drag if // it's from a previous page that got unloaded. if (m_doingDragAndDrop) m_doingDragAndDrop = false; } 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 (localFrameRootTemporary()->frameView()) { // Enqueues the resize event. localFrameRootTemporary()->frame()->document()->enqueueResizeEvent(); } if (!isAcceleratedCompositingActive()) { WebRect damagedRect(0, 0, m_size.width, m_size.height); m_client->didInvalidateRect(damagedRect); } } void WebViewImpl::setCompositorDeviceScaleFactorOverride(float deviceScaleFactor) { if (m_compositorDeviceScaleFactorOverride == deviceScaleFactor) return; m_compositorDeviceScaleFactorOverride = deviceScaleFactor; if (page() && m_layerTreeView) updateLayerTreeDeviceScaleFactor(); } void WebViewImpl::setRootLayerTransform(const WebSize& rootLayerOffset, float rootLayerScale) { if (m_rootLayerScale == rootLayerScale && m_rootLayerOffset == rootLayerOffset) return; m_rootLayerScale = rootLayerScale; m_rootLayerOffset = rootLayerOffset; if (mainFrameImpl()) mainFrameImpl()->setInputEventsTransformForEmulation(m_rootLayerOffset, m_rootLayerScale); updateRootLayerTransform(); } void WebViewImpl::extractSmartClipData(WebRect rect, WebString& clipText, WebString& clipHtml, WebRect& clipRect) { } 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; } void WebViewImpl::setBaseBackgroundColor(WebColor color) { layout(); if (m_baseBackgroundColor == color) return; m_baseBackgroundColor = color; if (m_page->mainFrame()) m_page->mainFrame()->view()->setBaseBackgroundColor(color); updateLayerTreeBackgroundColor(); } void WebViewImpl::setIsActive(bool active) { if (page()) page()->focusController().setActive(active); } bool WebViewImpl::isActive() const { return page() ? page()->focusController().isActive() : false; } void WebViewImpl::setDomainRelaxationForbidden(bool forbidden, const WebString& scheme) { SchemeRegistry::setDomainRelaxationForbiddenForURLScheme(forbidden, String(scheme)); } void WebViewImpl::setOpenedByDOM() { m_page->setOpenedByDOM(); } void WebViewImpl::setSelectionColors(unsigned activeBackgroundColor, unsigned activeForegroundColor, unsigned inactiveBackgroundColor, unsigned inactiveForegroundColor) { } void WebViewImpl::didCommitLoad(bool isNewNavigation, bool isNavigationWithinPage) { // Make sure link highlight from previous page is cleared. m_linkHighlights.clear(); endActiveFlingAnimation(); m_userGestureObserved = false; if (!isNavigationWithinPage) UserGestureIndicator::clearProcessedUserGestureSinceLoad(); } void WebViewImpl::didRemoveAllPendingStylesheet(WebLocalFrameImpl* webframe) { if (webframe != mainFrameImpl()) return; // If we have no more stylesheets to load and we're past the body tag, // we should have something to paint and should start as soon as possible. // FIXME(sky): This logic is probably wrong now. resumeTreeViewCommits(); } void WebViewImpl::resumeTreeViewCommits() { if (m_layerTreeViewCommitsDeferred) { if (m_layerTreeView) m_layerTreeView->setDeferCommits(false); m_layerTreeViewCommitsDeferred = false; } } void WebViewImpl::layoutUpdated(WebLocalFrameImpl* webframe) { if (!m_client) return; // If we finished a layout while in deferred commit mode, // that means it's time to start producing frames again so un-defer. resumeTreeViewCommits(); m_client->didUpdateLayout(); } void WebViewImpl::setIgnoreInputEvents(bool newValue) { ASSERT(m_ignoreInputEvents != newValue); m_ignoreInputEvents = newValue; } void WebViewImpl::setBackgroundColorOverride(WebColor color) { m_backgroundColorOverride = color; updateLayerTreeBackgroundColor(); } void WebViewImpl::setZoomFactorOverride(float zoomFactor) { m_zoomFactorOverride = zoomFactor; setZoomLevel(zoomLevel()); } void WebViewImpl::setOverlayLayer(GraphicsLayer* layer) { if (!m_rootGraphicsLayer) return; // FIXME(bokan): This path goes away after virtual viewport pinch is enabled everywhere. if (!m_rootTransformLayer) m_rootTransformLayer = m_page->mainFrame()->view()->renderView()->compositor()->ensureRootTransformLayer(); if (m_rootTransformLayer) { if (layer->parent() != m_rootTransformLayer) m_rootTransformLayer->addChild(layer); } } 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::setTabsToLinks(bool enable) { m_tabsToLinks = enable; } bool WebViewImpl::tabsToLinks() const { return m_tabsToLinks; } void WebViewImpl::suppressInvalidations(bool enable) { m_client->suppressCompositorScheduling(enable); } void WebViewImpl::setRootGraphicsLayer(GraphicsLayer* layer) { suppressInvalidations(true); m_rootGraphicsLayer = layer; m_rootLayer = layer ? layer->platformLayer() : 0; m_rootTransformLayer = 0; setIsAcceleratedCompositingActive(layer != 0); updateRootLayerTransform(); if (m_layerTreeView) { if (m_rootLayer) { m_layerTreeView->setRootLayer(*m_rootLayer); // We register viewport layers here since there may not be a layer // tree view prior to this point. GraphicsLayer* rootScrollLayer = compositor()->scrollLayer(); ASSERT(rootScrollLayer); WebLayer* pageScaleLayer = rootScrollLayer->parent() ? rootScrollLayer->parent()->platformLayer() : 0; m_layerTreeView->registerViewportLayers(pageScaleLayer, rootScrollLayer->platformLayer(), 0); } else { m_layerTreeView->clearRootLayer(); m_layerTreeView->clearViewportLayers(); } } suppressInvalidations(false); } void WebViewImpl::scheduleCompositingLayerSync() { m_layerTreeView->setNeedsAnimate(); } void WebViewImpl::invalidateRect(const IntRect& rect) { if (!m_isAcceleratedCompositingActive) { m_client->didInvalidateRect(rect); } } GraphicsLayerFactory* WebViewImpl::graphicsLayerFactory() const { return m_graphicsLayerFactory.get(); } RenderLayerCompositor* WebViewImpl::compositor() const { if (!page() || !page()->mainFrame()) return 0; if (!page()->mainFrame()->document() || !page()->mainFrame()->document()->renderView()) return 0; return page()->mainFrame()->document()->renderView()->compositor(); } void WebViewImpl::registerForAnimations(WebLayer* layer) { if (m_layerTreeView) m_layerTreeView->registerForAnimations(layer); } GraphicsLayer* WebViewImpl::rootGraphicsLayer() { return m_rootGraphicsLayer; } void WebViewImpl::scheduleAnimation() { if (isAcceleratedCompositingActive()) { ASSERT(m_layerTreeView); m_layerTreeView->setNeedsAnimate(); return; } m_client->scheduleAnimation(); } void WebViewImpl::setIsAcceleratedCompositingActive(bool active) { // In the middle of shutting down; don't try to spin back up a compositor. // FIXME: compositing startup/shutdown should be refactored so that it // turns on explicitly rather than lazily, which causes this awkwardness. if (m_layerTreeViewClosed) return; ASSERT(!active || m_layerTreeView); Platform::current()->histogramEnumeration("GPU.setIsAcceleratedCompositingActive", active * 2 + m_isAcceleratedCompositingActive, 4); if (m_isAcceleratedCompositingActive == active) return; if (!m_client) return; if (!active) { m_isAcceleratedCompositingActive = false; if (!m_layerTreeViewCommitsDeferred) { ASSERT(m_layerTreeView); // This means that we're transitioning to a new page. Suppress commits until WebKit generates invalidations so // we don't attempt to paint too early in the next page load. m_layerTreeView->setDeferCommits(true); m_layerTreeViewCommitsDeferred = true; } } else { TRACE_EVENT0("blink", "WebViewImpl::setIsAcceleratedCompositingActive(true)"); m_layerTreeView->setRootLayer(*m_rootLayer); bool visible = page()->visibilityState() == PageVisibilityStateVisible; m_layerTreeView->setVisible(visible); updateLayerTreeDeviceScaleFactor(); updateLayerTreeBackgroundColor(); m_layerTreeView->setHasTransparentBackground(isTransparent()); m_isAcceleratedCompositingActive = true; m_layerTreeView->setShowFPSCounter(m_showFPSCounter); m_layerTreeView->setShowPaintRects(m_showPaintRects); m_layerTreeView->setShowDebugBorders(m_showDebugBorders); m_layerTreeView->setContinuousPaintingEnabled(m_continuousPaintingEnabled); m_layerTreeView->setShowScrollBottleneckRects(m_showScrollBottleneckRects); m_layerTreeView->heuristicsForGpuRasterizationUpdated(m_matchesHeuristicsForGpuRasterization); } } void WebViewImpl::updateMainFrameScrollPosition(const IntPoint& scrollPosition, bool programmaticScroll) { // FIXME(sky): Remove } void WebViewImpl::updateLayerTreeBackgroundColor() { if (!m_layerTreeView) return; m_layerTreeView->setBackgroundColor(alphaChannel(m_backgroundColorOverride) ? m_backgroundColorOverride : backgroundColor()); } void WebViewImpl::updateLayerTreeDeviceScaleFactor() { ASSERT(page()); ASSERT(m_layerTreeView); float deviceScaleFactor = m_compositorDeviceScaleFactorOverride ? m_compositorDeviceScaleFactorOverride : page()->deviceScaleFactor(); m_layerTreeView->setDeviceScaleFactor(deviceScaleFactor); } void WebViewImpl::updateRootLayerTransform() { // If we don't have a root graphics layer, we won't bother trying to find // or update the transform layer. if (!m_rootGraphicsLayer) return; // FIXME(bokan): m_rootTransformLayer is always set here in pinch virtual viewport. This can go away once // that's default everywhere. if (!m_rootTransformLayer) m_rootTransformLayer = m_page->mainFrame()->view()->renderView()->compositor()->ensureRootTransformLayer(); if (m_rootTransformLayer) { TransformationMatrix transform; transform.translate(m_rootLayerOffset.width, m_rootLayerOffset.height); transform = transform.scale(m_rootLayerScale); m_rootTransformLayer->setTransform(transform); } } bool WebViewImpl::detectContentOnTouch(const WebPoint& position) { HitTestResult touchHit = hitTestResultForWindowPos(position); if (touchHit.isContentEditable()) return false; Node* node = touchHit.innerNode(); if (!node || !node->isTextNode()) return false; // Ignore when tapping on links or nodes listening to click events. for (; node; node = NodeRenderingTraversal::parent(node)) { if (node->isLink() || node->willRespondToTouchEvents() || node->willRespondToMouseClickEvents()) return false; } WebContentDetectionResult content = m_client->detectContentAround(touchHit); if (!content.isValid()) return false; m_client->scheduleContentIntent(content.intent()); return true; } void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState, bool isInitialState) { if (!page()) return; ASSERT(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden); m_page->setVisibilityState(static_cast(static_cast(visibilityState)), isInitialState); if (m_layerTreeView) { bool visible = visibilityState == WebPageVisibilityStateVisible; m_layerTreeView->setVisible(visible); } } bool WebViewImpl::shouldDisableDesktopWorkarounds() { return true; } } // namespace blink