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/*
* 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/accessibility/AXObjectCache.h"
#include "core/clipboard/DataObject.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/PinchViewport.h"
#include "core/frame/RemoteFrame.h"
#include "core/frame/Settings.h"
#include "core/frame/SmartClip.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/HTMLMediaElement.h"
#include "core/html/HTMLPlugInElement.h"
#include "core/html/HTMLTextAreaElement.h"
#include "core/html/ime/InputMethodContext.h"
#include "core/inspector/InspectorController.h"
#include "core/loader/DocumentLoader.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/UniqueIdentifier.h"
#include "core/page/Chrome.h"
#include "core/page/ContextMenuController.h"
#include "core/page/ContextMenuProvider.h"
#include "core/page/DragController.h"
#include "core/page/DragData.h"
#include "core/page/DragSession.h"
#include "core/page/EventHandler.h"
#include "core/page/EventWithHitTestResults.h"
#include "core/page/FocusController.h"
#include "core/page/FrameTree.h"
#include "core/page/InjectedStyleSheets.h"
#include "core/page/Page.h"
#include "core/page/PagePopupClient.h"
#include "core/page/PointerLockController.h"
#include "core/page/ScopedPageLoadDeferrer.h"
#include "core/page/TouchDisambiguation.h"
#include "core/rendering/RenderView.h"
#include "core/rendering/RenderWidget.h"
#include "core/rendering/TextAutosizer.h"
#include "core/rendering/compositing/RenderLayerCompositor.h"
#include "modules/device_orientation/DeviceOrientationInspectorAgent.h"
#include "modules/encryptedmedia/MediaKeysController.h"
#include "modules/filesystem/InspectorFileSystemAgent.h"
#include "modules/indexeddb/InspectorIndexedDBAgent.h"
#include "modules/push_messaging/PushController.h"
#include "platform/ContextMenu.h"
#include "platform/ContextMenuItem.h"
#include "platform/Cursor.h"
#include "platform/KeyboardCodes.h"
#include "platform/NotImplemented.h"
#include "platform/OverscrollTheme.h"
#include "platform/PlatformGestureEvent.h"
#include "platform/PlatformKeyboardEvent.h"
#include "platform/PlatformMouseEvent.h"
#include "platform/PlatformWheelEvent.h"
#include "platform/PopupMenuClient.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/ScrollbarTheme.h"
#include "platform/weborigin/SchemeRegistry.h"
#include "public/platform/Platform.h"
#include "public/platform/WebDragData.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/WebAXObject.h"
#include "public/web/WebActiveWheelFlingParameters.h"
#include "public/web/WebAutofillClient.h"
#include "public/web/WebBeginFrameArgs.h"
#include "public/web/WebFrameClient.h"
#include "public/web/WebHitTestResult.h"
#include "public/web/WebInputElement.h"
#include "public/web/WebMediaPlayerAction.h"
#include "public/web/WebNode.h"
#include "public/web/WebPlugin.h"
#include "public/web/WebPluginAction.h"
#include "public/web/WebRange.h"
#include "public/web/WebTextInputInfo.h"
#include "public/web/WebViewClient.h"
#include "public/web/WebWindowFeatures.h"
#include "web/CompositionUnderlineVectorBuilder.h"
#include "web/ContextFeaturesClientImpl.h"
#include "web/DatabaseClientImpl.h"
#include "web/FullscreenController.h"
#include "web/GraphicsLayerFactoryChromium.h"
#include "web/LinkHighlight.h"
#include "web/NavigatorContentUtilsClientImpl.h"
#include "web/PopupContainer.h"
#include "web/PrerendererClientImpl.h"
#include "web/SpeechRecognitionClientProxy.h"
#include "web/StorageQuotaClientImpl.h"
#include "web/ValidationMessageClientImpl.h"
#include "web/ViewportAnchor.h"
#include "web/WebDevToolsAgentImpl.h"
#include "web/WebDevToolsAgentPrivate.h"
#include "web/WebInputEventConversion.h"
#include "web/WebLocalFrameImpl.h"
#include "web/WebPagePopupImpl.h"
#include "web/WebPluginContainerImpl.h"
#include "web/WebPopupMenuImpl.h"
#include "web/WebRemoteFrameImpl.h"
#include "web/WebSettingsImpl.h"
#include "web/WorkerGlobalScopeProxyProviderImpl.h"
#include "web/painting/ContinuousPainter.h"
#include "wtf/CurrentTime.h"
#include "wtf/RefPtr.h"
#include "wtf/TemporaryChange.h"
#if USE(DEFAULT_RENDER_THEME)
#include "core/rendering/RenderThemeChromiumDefault.h"
#endif
// Get rid of WTF's pow define so we can use std::pow.
#undef pow
#include <cmath> // for std::pow
// The following constants control parameters for automated scaling of webpages
// (such as due to a double tap gesture or find in page etc.). These are
// experimentally determined.
static const int touchPointPadding = 32;
static const int nonUserInitiatedPointPadding = 11;
static const float minScaleDifference = 0.01f;
static const float doubleTapZoomContentDefaultMargin = 5;
static const float doubleTapZoomContentMinimumMargin = 2;
static const double doubleTapZoomAnimationDurationInSeconds = 0.25;
static const float doubleTapZoomAlreadyLegibleRatio = 1.2f;
static const double multipleTargetsZoomAnimationDurationInSeconds = 0.25;
static const double findInPageAnimationDurationInSeconds = 0;
// Constants for viewport anchoring on resize.
static const float viewportAnchorXCoord = 0.5f;
static const float viewportAnchorYCoord = 0;
// Constants for zooming in on a focused text field.
static const double scrollAndScaleAnimationDurationInSeconds = 0.2;
static const int minReadableCaretHeight = 18;
static const float minScaleChangeToTriggerZoom = 1.05f;
static const float leftBoxRatio = 0.3f;
static const int caretPadding = 10;
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;
// Used to defer all page activity in cases where the embedder wishes to run
// a nested event loop. Using a stack enables nesting of message loop invocations.
static Vector<ScopedPageLoadDeferrer*>& pageLoadDeferrerStack()
{
DEFINE_STATIC_LOCAL(Vector<ScopedPageLoadDeferrer*>, deferrerStack, ());
return deferrerStack;
}
// Ensure that the WebDragOperation enum values stay in sync with the original
// DragOperation constants.
#define COMPILE_ASSERT_MATCHING_ENUM(coreName) \
COMPILE_ASSERT(int(coreName) == int(Web##coreName), dummy##coreName)
COMPILE_ASSERT_MATCHING_ENUM(DragOperationNone);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationCopy);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationLink);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationGeneric);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationPrivate);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationMove);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationDelete);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationEvery);
static bool shouldUseExternalPopupMenus = false;
static int webInputEventKeyStateToPlatformEventKeyState(int webInputEventKeyState)
{
int platformEventKeyState = 0;
if (webInputEventKeyState & WebInputEvent::ShiftKey)
platformEventKeyState = platformEventKeyState | PlatformEvent::ShiftKey;
if (webInputEventKeyState & WebInputEvent::ControlKey)
platformEventKeyState = platformEventKeyState | PlatformEvent::CtrlKey;
if (webInputEventKeyState & WebInputEvent::AltKey)
platformEventKeyState = platformEventKeyState | PlatformEvent::AltKey;
if (webInputEventKeyState & WebInputEvent::MetaKey)
platformEventKeyState = platformEventKeyState | PlatformEvent::MetaKey;
return platformEventKeyState;
}
namespace {
class UserGestureNotifier {
public:
// If a UserGestureIndicator is created for a user gesture since the last
// page load and *userGestureObserved is false, the UserGestureNotifier
// will notify the client and set *userGestureObserved to true.
UserGestureNotifier(WebAutofillClient*, bool* userGestureObserved);
~UserGestureNotifier();
private:
WebAutofillClient* const m_client;
bool* const m_userGestureObserved;
};
UserGestureNotifier::UserGestureNotifier(WebAutofillClient* client, bool* userGestureObserved)
: m_client(client)
, m_userGestureObserved(userGestureObserved)
{
ASSERT(m_userGestureObserved);
}
UserGestureNotifier::~UserGestureNotifier()
{
if (!*m_userGestureObserved && UserGestureIndicator::processedUserGestureSinceLoad()) {
*m_userGestureObserved = true;
if (m_client)
m_client->firstUserGestureObserved();
}
}
} // namespace
// 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 WebView::setUseExternalPopupMenus(bool useExternalPopupMenus)
{
shouldUseExternalPopupMenus = useExternalPopupMenus;
}
void WebView::updateVisitedLinkState(unsigned long long linkHash)
{
Page::visitedStateChanged(linkHash);
}
void WebView::resetVisitedLinkState()
{
Page::allVisitedStateChanged();
}
void WebView::willEnterModalLoop()
{
pageLoadDeferrerStack().append(new ScopedPageLoadDeferrer());
}
void WebView::didExitModalLoop()
{
ASSERT(pageLoadDeferrerStack().size());
delete pageLoadDeferrerStack().last();
pageLoadDeferrerStack().removeLast();
}
void WebViewImpl::setMainFrame(WebFrame* frame)
{
if (frame->isWebLocalFrame())
toWebLocalFrameImpl(frame)->initializeCoreFrame(&page()->frameHost(), 0, nullAtom, nullAtom);
else
toWebRemoteFrameImpl(frame)->initializeCoreFrame(&page()->frameHost(), 0, nullAtom);
}
void WebViewImpl::setAutofillClient(WebAutofillClient* autofillClient)
{
m_autofillClient = autofillClient;
}
void WebViewImpl::setDevToolsAgentClient(WebDevToolsAgentClient* devToolsClient)
{
if (devToolsClient)
m_devToolsAgent = adoptPtr(new WebDevToolsAgentImpl(this, devToolsClient));
else
m_devToolsAgent.clear();
}
void WebViewImpl::setPrerendererClient(WebPrerendererClient* prerendererClient)
{
ASSERT(m_page);
providePrerendererClientTo(*m_page, new PrerendererClientImpl(prerendererClient));
}
void WebViewImpl::setSpellCheckClient(WebSpellCheckClient* spellCheckClient)
{
m_spellCheckClient = spellCheckClient;
}
WebViewImpl::WebViewImpl(WebViewClient* client)
: m_client(client)
, m_autofillClient(0)
, m_spellCheckClient(0)
, m_chromeClientImpl(this)
, m_contextMenuClientImpl(this)
, m_dragClientImpl(this)
, m_editorClientImpl(this)
, m_inspectorClientImpl(this)
, m_backForwardClientImpl(this)
, m_spellCheckerClientImpl(this)
, m_storageClientImpl(this)
, m_fixedLayoutSizeLock(false)
, m_shouldAutoResize(false)
, m_zoomLevel(0)
, m_minimumZoomLevel(zoomFactorToZoomLevel(minTextSizeMultiplier))
, m_maximumZoomLevel(zoomFactorToZoomLevel(maxTextSizeMultiplier))
, m_doubleTapZoomPageScaleFactor(0)
, m_doubleTapZoomPending(false)
, m_enableFakePageScaleAnimationForTesting(false)
, m_fakePageScaleAnimationPageScaleFactor(0)
, m_fakePageScaleAnimationUseAnchor(false)
, m_contextMenuAllowed(false)
, m_doingDragAndDrop(false)
, m_ignoreInputEvents(false)
, m_compositorDeviceScaleFactorOverride(0)
, m_rootLayerScale(1)
, m_suppressNextKeypressEvent(false)
, m_imeAcceptEvents(true)
, m_operationsAllowed(WebDragOperationNone)
, m_dragOperation(WebDragOperationNone)
, 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_fullscreenController(FullscreenController::create(this))
, 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.contextMenuClient = &m_contextMenuClientImpl;
pageClients.editorClient = &m_editorClientImpl;
pageClients.dragClient = &m_dragClientImpl;
pageClients.inspectorClient = &m_inspectorClientImpl;
pageClients.backForwardClient = &m_backForwardClientImpl;
pageClients.spellCheckerClient = &m_spellCheckerClientImpl;
pageClients.storageClient = &m_storageClientImpl;
m_page = adoptPtrWillBeNoop(new Page(pageClients));
MediaKeysController::provideMediaKeysTo(*m_page, &m_mediaKeysClientImpl);
provideSpeechRecognitionTo(*m_page, SpeechRecognitionClientProxy::create(client ? client->speechRecognizer() : 0));
provideNavigatorContentUtilsTo(*m_page, NavigatorContentUtilsClientImpl::create(this));
provideContextFeaturesTo(*m_page, ContextFeaturesClientImpl::create());
DeviceOrientationInspectorAgent::provideTo(*m_page);
m_page->inspectorController().registerModuleAgent(InspectorFileSystemAgent::create(m_page.get()));
provideDatabaseClientTo(*m_page, DatabaseClientImpl::create());
InspectorIndexedDBAgent::provideTo(m_page.get());
provideStorageQuotaClientTo(*m_page, StorageQuotaClientImpl::create());
m_page->setValidationMessageClient(ValidationMessageClientImpl::create(*this));
provideWorkerGlobalScopeProxyProviderTo(*m_page, WorkerGlobalScopeProxyProviderImpl::create());
m_page->makeOrdinary();
if (m_client) {
providePushControllerTo(*m_page, m_client->webPushClient());
setDeviceScaleFactor(m_client->screenInfo().deviceScaleFactor);
setVisibilityState(m_client->visibilityState(), true);
}
initializeLayerTreeView();
}
WebViewImpl::~WebViewImpl()
{
ASSERT(!m_page);
}
WebLocalFrameImpl* WebViewImpl::mainFrameImpl()
{
return m_page && m_page->mainFrame() && m_page->mainFrame()->isLocalFrame() ? WebLocalFrameImpl::fromFrame(m_page->deprecatedLocalMainFrame()) : 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)
{
// If there is a popup open, close it as the user is clicking on the page (outside of the
// popup). We also save it so we can prevent a click on an element from immediately
// reopening the same popup.
RefPtr<PopupContainer> selectPopup;
RefPtr<WebPagePopupImpl> pagePopup;
if (event.button == WebMouseEvent::ButtonLeft) {
selectPopup = m_selectPopup;
pagePopup = m_pagePopup;
hidePopups();
ASSERT(!m_selectPopup);
ASSERT(!m_pagePopup);
}
m_lastMouseDownPoint = WebPoint(event.x, event.y);
// Take capture on a mouse down on a plugin so we can send it mouse events.
// If the hit node is a plugin but a scrollbar is over it don't start mouse
// capture because it will interfere with the scrollbar receiving events.
IntPoint point(event.x, event.y);
if (event.button == WebMouseEvent::ButtonLeft && m_page->mainFrame()->isLocalFrame() && !m_page->deprecatedLocalMainFrame()->view()->scrollbarAtPoint(point)) {
point = m_page->deprecatedLocalMainFrame()->view()->windowToContents(point);
HitTestResult result(m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(point));
Node* hitNode = result.innerNonSharedNode();
if (!result.scrollbar() && hitNode && hitNode->renderer() && hitNode->renderer()->isEmbeddedObject()) {
m_mouseCaptureNode = hitNode;
TRACE_EVENT_ASYNC_BEGIN0("input", "capturing mouse", this);
}
}
PageWidgetEventHandler::handleMouseDown(mainFrame, event);
if (event.button == WebMouseEvent::ButtonLeft && m_mouseCaptureNode)
m_mouseCaptureGestureToken = mainFrame.eventHandler().takeLastMouseDownGestureToken();
if (m_selectPopup && m_selectPopup == selectPopup) {
// That click triggered a select popup which is the same as the one that
// was showing before the click. It means the user clicked the select
// while the popup was showing, and as a result we first closed then
// immediately reopened the select popup. It needs to be closed.
hideSelectPopup();
}
if (m_pagePopup && pagePopup && m_pagePopup->hasSamePopupClient(pagePopup.get())) {
// That click triggered a page popup that is the same as the one we just closed.
// It needs to be closed.
closePagePopup(m_pagePopup.get());
}
// Dispatch the contextmenu event regardless of if the click was swallowed.
#if OS(WIN)
// On Windows, we handle it on mouse up, not down.
#elif OS(MACOSX)
if (event.button == WebMouseEvent::ButtonRight
|| (event.button == WebMouseEvent::ButtonLeft
&& event.modifiers & WebMouseEvent::ControlKey))
mouseContextMenu(event);
#else
if (event.button == WebMouseEvent::ButtonRight)
mouseContextMenu(event);
#endif
}
void WebViewImpl::mouseContextMenu(const WebMouseEvent& event)
{
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return;
m_page->contextMenuController().clearContextMenu();
PlatformMouseEventBuilder pme(mainFrameImpl()->frameView(), event);
// Find the right target frame. See issue 1186900.
HitTestResult result = hitTestResultForWindowPos(pme.position());
Frame* targetFrame;
if (result.innerNonSharedNode())
targetFrame = result.innerNonSharedNode()->document().frame();
else
targetFrame = m_page->focusController().focusedOrMainFrame();
if (!targetFrame->isLocalFrame())
return;
LocalFrame* targetLocalFrame = toLocalFrame(targetFrame);
#if OS(WIN)
targetLocalFrame->view()->setCursor(pointerCursor());
#endif
m_contextMenuAllowed = true;
targetLocalFrame->eventHandler().sendContextMenuEvent(pme);
m_contextMenuAllowed = false;
// Actually showing the context menu is handled by the ContextMenuClient
// implementation...
}
void WebViewImpl::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event)
{
PageWidgetEventHandler::handleMouseUp(mainFrame, event);
#if OS(WIN)
// Dispatch the contextmenu event regardless of if the click was swallowed.
// On Mac/Linux, we handle it on mouse down, not up.
if (event.button == WebMouseEvent::ButtonRight)
mouseContextMenu(event);
#endif
}
bool WebViewImpl::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event)
{
hidePopups();
return PageWidgetEventHandler::handleMouseWheel(mainFrame, event);
}
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()->isLocalFrame() && m_page->deprecatedLocalMainFrame()->view())
return handleMouseWheel(*m_page->deprecatedLocalMainFrame(), 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()->isLocalFrame() && m_page->deprecatedLocalMainFrame()->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 / pageScaleFactor(), event.y / pageScaleFactor());
m_globalPositionOnFlingStart = WebPoint(event.globalX, event.globalY);
m_flingModifier = event.modifiers;
m_flingSourceDevice = event.sourceDevice;
OwnPtr<WebGestureCurve> 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;
}
RefPtr<PopupContainer> selectPopup;
selectPopup = m_selectPopup;
hideSelectPopup();
ASSERT(!m_selectPopup);
// 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;
scaledEvent.x = event.x / pageScaleFactor();
scaledEvent.y = event.y / pageScaleFactor();
scaledEvent.data.tap.width = event.data.tap.width / pageScaleFactor();
scaledEvent.data.tap.height = event.data.tap.height / pageScaleFactor();
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<IntRect> goodTargets;
WillBeHeapVector<RawPtrWillBeMember<Node> > 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);
if (m_selectPopup && m_selectPopup == selectPopup) {
// That tap triggered a select popup which is the same as the one that
// was showing before the tap. It means the user tapped the select
// while the popup was showing, and as a result we first closed then
// immediately reopened the select popup. It needs to be closed.
hideSelectPopup();
}
break;
}
case WebInputEvent::GestureTwoFingerTap:
case WebInputEvent::GestureLongPress:
case WebInputEvent::GestureLongTap: {
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
break;
m_client->cancelScheduledContentIntents();
m_page->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent);
m_contextMenuAllowed = false;
break;
}
case WebInputEvent::GestureShowPress: {
m_client->cancelScheduledContentIntents();
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent);
break;
}
case WebInputEvent::GestureDoubleTap:
if (m_webSettings->doubleTapToZoomEnabled() && minimumPageScaleFactor() != maximumPageScaleFactor()) {
m_client->cancelScheduledContentIntents();
animateDoubleTapZoom(platformEvent.position());
}
// 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<WebGestureCurve> 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;
}
bool WebViewImpl::startPageScaleAnimation(const IntPoint& targetPosition, bool useAnchor, float newScale, double durationInSeconds)
{
WebPoint clampedPoint = targetPosition;
if (!useAnchor) {
clampedPoint = clampOffsetAtScale(targetPosition, newScale);
if (!durationInSeconds) {
setPageScaleFactor(newScale, clampedPoint);
return false;
}
}
if (useAnchor && newScale == pageScaleFactor())
return false;
if (m_enableFakePageScaleAnimationForTesting) {
m_fakePageScaleAnimationTargetPosition = targetPosition;
m_fakePageScaleAnimationUseAnchor = useAnchor;
m_fakePageScaleAnimationPageScaleFactor = newScale;
} else {
if (!m_layerTreeView)
return false;
m_layerTreeView->startPageScaleAnimation(targetPosition, useAnchor, newScale, durationInSeconds);
}
return true;
}
void WebViewImpl::enableFakePageScaleAnimationForTesting(bool enable)
{
m_enableFakePageScaleAnimationForTesting = enable;
}
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 Frame* frame = focusedCoreFrame();
if (!frame || !frame->isLocalFrame())
return;
Element* root = toLocalFrame(frame)->selection().rootEditableElementOrDocumentElement();
if (!root)
return;
// If the selection is inside a form control, the root will be a <div> that
// behaves as the editor but we want to return the actual element's bounds.
// In practice, that means <textarea> and <input> controls that behave like
// a text field.
Element* shadowHost = root->shadowHost();
if (shadowHost
&& (isHTMLTextAreaElement(*shadowHost)
|| (isHTMLInputElement(*shadowHost)
&& toHTMLInputElement(*shadowHost).isText())))
root = shadowHost;
IntRect boundingBox = isHTMLHtmlElement(root)
? IntRect(IntPoint(0, 0), root->document().frame()->view()->contentsSize())
: root->pixelSnappedBoundingBox();
boundingBox = root->document().frame()->view()->contentsToWindow(boundingBox);
boundingBox.scale(pageScaleFactor());
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;
// If there is a select popup, it should be the one processing the event,
// not the page.
if (m_selectPopup)
return m_selectPopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
if (m_pagePopup) {
m_pagePopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
// We need to ignore the next Char event after this otherwise pressing
// enter when selecting an item in the popup will go to the page.
if (WebInputEvent::RawKeyDown == event.type)
m_suppressNextKeypressEvent = true;
return true;
}
RefPtr<Frame> focusedFrame = focusedCoreFrame();
if (focusedFrame && focusedFrame->isRemoteFrameTemporary()) {
WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(toLocalFrameTemporary(focusedFrame.get()));
webFrame->client()->forwardInputEvent(&event);
return true;
}
if (!focusedFrame || !focusedFrame->isLocalFrame())
return false;
RefPtr<LocalFrame> frame = toLocalFrame(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.)
Element* element = focusedElement();
if (!element || !element->renderer() || !element->renderer()->isEmbeddedObject())
m_suppressNextKeypressEvent = true;
}
return true;
}
#if !OS(MACOSX)
const WebInputEvent::Type contextMenuTriggeringEventType =
#if OS(WIN)
WebInputEvent::KeyUp;
#else
WebInputEvent::RawKeyDown;
#endif
bool isUnmodifiedMenuKey = !(event.modifiers & WebInputEvent::InputModifiers) && event.windowsKeyCode == VKEY_APPS;
bool isShiftF10 = event.modifiers == WebInputEvent::ShiftKey && event.windowsKeyCode == VKEY_F10;
if ((isUnmodifiedMenuKey || isShiftF10) && event.type == contextMenuTriggeringEventType) {
sendContextMenuEvent(event);
return true;
}
#endif // !OS(MACOSX)
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;
// If there is a select popup, it should be the one processing the event,
// not the page.
if (m_selectPopup)
return m_selectPopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
if (m_pagePopup)
return m_pagePopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
LocalFrame* frame = toLocalFrame(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.
while (node && (!node->renderer() || node->renderer()->isInline()))
node = node->parentNode();
// 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();
IntSize scrollOffset;
if (mainFrame())
scrollOffset = mainFrame()->scrollOffset();
int leftMargin = targetMargin;
int rightMargin = targetMargin;
const int absoluteSourceX = source.x + scrollOffset.width();
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(scrollOffset.width() + newX + newWidth <= maxSize.width);
return WebRect(newX, source.y, newWidth, source.height);
}
float WebViewImpl::legibleScale() const
{
// Pages should be as legible as on desktop when at dpi scale, so no
// need to zoom in further when automatically determining zoom level
// (after double tap, find in page, etc), though the user should still
// be allowed to manually pinch zoom in further if they desire.
float legibleScale = 1;
if (page())
legibleScale *= page()->settings().accessibilityFontScaleFactor();
return legibleScale;
}
void WebViewImpl::computeScaleAndScrollForBlockRect(const WebPoint& hitPoint, const WebRect& blockRect, float padding, float defaultScaleWhenAlreadyLegible, float& scale, WebPoint& scroll)
{
scale = pageScaleFactor();
scroll.x = scroll.y = 0;
WebRect rect = blockRect;
if (!rect.isEmpty()) {
float defaultMargin = doubleTapZoomContentDefaultMargin;
float minimumMargin = doubleTapZoomContentMinimumMargin;
// We want the margins to have the same physical size, which means we
// need to express them in post-scale size. To do that we'd need to know
// the scale we're scaling to, but that depends on the margins. Instead
// we express them as a fraction of the target rectangle: this will be
// correct if we end up fully zooming to it, and won't matter if we
// don't.
rect = widenRectWithinPageBounds(rect,
static_cast<int>(defaultMargin * rect.width / m_size.width),
static_cast<int>(minimumMargin * rect.width / m_size.width));
// Fit block to screen, respecting limits.
scale = static_cast<float>(m_size.width) / rect.width;
scale = std::min(scale, legibleScale());
if (pageScaleFactor() < defaultScaleWhenAlreadyLegible)
scale = std::max(scale, defaultScaleWhenAlreadyLegible);
scale = clampPageScaleFactorToLimits(scale);
}
// FIXME: If this is being called for auto zoom during find in page,
// then if the user manually zooms in it'd be nice to preserve the
// relative increase in zoom they caused (if they zoom out then it's ok
// to zoom them back in again). This isn't compatible with our current
// double-tap zoom strategy (fitting the containing block to the screen)
// though.
float screenWidth = m_size.width / scale;
float screenHeight = m_size.height / scale;
// Scroll to vertically align the block.
if (rect.height < screenHeight) {
// Vertically center short blocks.
rect.y -= 0.5 * (screenHeight - rect.height);
} else {
// Ensure position we're zooming to (+ padding) isn't off the bottom of
// the screen.
rect.y = std::max<float>(rect.y, hitPoint.y + padding - screenHeight);
} // Otherwise top align the block.
// Do the same thing for horizontal alignment.
if (rect.width < screenWidth)
rect.x -= 0.5 * (screenWidth - rect.width);
else
rect.x = std::max<float>(rect.x, hitPoint.x + padding - screenWidth);
scroll.x = rect.x;
scroll.y = rect.y;
scale = clampPageScaleFactorToLimits(scale);
scroll = mainFrameImpl()->frameView()->windowToContents(scroll);
scroll = clampOffsetAtScale(scroll, scale);
}
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 = node->parentNode();
}
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->deprecatedLocalMainFrame()->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
while (bestTouchNode && !bestTouchNode->renderer())
bestTouchNode = bestTouchNode->parentNode();
Node* cursorDefiningAncestor =
findCursorDefiningAncestor(bestTouchNode, m_page->deprecatedLocalMainFrame());
// We show a highlight on tap only when the current node shows a hand cursor
if (!cursorDefiningAncestor || !showsHandCursor(cursorDefiningAncestor, m_page->deprecatedLocalMainFrame())) {
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(bestTouchNode->parentNode(), m_page->deprecatedLocalMainFrame());
} while (cursorDefiningAncestor && showsHandCursor(cursorDefiningAncestor, m_page->deprecatedLocalMainFrame()));
return bestTouchNode;
}
void WebViewImpl::enableTapHighlightAtPoint(const PlatformGestureEvent& tapEvent)
{
Node* touchNode = bestTapNode(tapEvent);
WillBeHeapVector<RawPtrWillBeMember<Node> > highlightNodes;
highlightNodes.append(touchNode);
enableTapHighlights(highlightNodes);
}
void WebViewImpl::enableTapHighlights(WillBeHeapVector<RawPtrWillBeMember<Node> >& 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)
{
if (!mainFrameImpl())
return;
WebRect rect(point.x(), point.y(), touchPointPadding, touchPointPadding);
WebRect blockBounds = computeBlockBounds(rect, false);
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(point, blockBounds, touchPointPadding, minimumPageScaleFactor() * doubleTapZoomAlreadyLegibleRatio, scale, scroll);
bool stillAtPreviousDoubleTapScale = (pageScaleFactor() == m_doubleTapZoomPageScaleFactor
&& m_doubleTapZoomPageScaleFactor != minimumPageScaleFactor())
|| m_doubleTapZoomPending;
bool scaleUnchanged = fabs(pageScaleFactor() - scale) < minScaleDifference;
bool shouldZoomOut = blockBounds.isEmpty() || scaleUnchanged || stillAtPreviousDoubleTapScale;
bool isAnimating;
if (shouldZoomOut) {
scale = minimumPageScaleFactor();
isAnimating = startPageScaleAnimation(mainFrameImpl()->frameView()->windowToContents(point), true, scale, doubleTapZoomAnimationDurationInSeconds);
} else {
isAnimating = startPageScaleAnimation(scroll, false, scale, doubleTapZoomAnimationDurationInSeconds);
}
if (isAnimating) {
m_doubleTapZoomPageScaleFactor = scale;
m_doubleTapZoomPending = true;
}
}
void WebViewImpl::zoomToFindInPageRect(const WebRect& rect)
{
if (!mainFrameImpl())
return;
WebRect blockBounds = computeBlockBounds(rect, true);
if (blockBounds.isEmpty()) {
// Keep current scale (no need to scroll as x,y will normally already
// be visible). FIXME: Revisit this if it isn't always true.
return;
}
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(WebPoint(rect.x, rect.y), blockBounds, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll);
startPageScaleAnimation(scroll, false, scale, findInPageAnimationDurationInSeconds);
}
bool WebViewImpl::zoomToMultipleTargetsRect(const WebRect& rect)
{
if (!mainFrameImpl())
return false;
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(WebPoint(rect.x, rect.y), rect, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll);
if (scale <= pageScaleFactor())
return false;
startPageScaleAnimation(scroll, false, scale, multipleTargetsZoomAnimationDurationInSeconds);
return true;
}
void WebViewImpl::hasTouchEventHandlers(bool hasTouchHandlers)
{
if (m_client)
m_client->hasTouchEventHandlers(hasTouchHandlers);
}
bool WebViewImpl::hasTouchEventHandlersAt(const WebPoint& point)
{
// FIXME: Implement this. Note that the point must be divided by pageScaleFactor.
return true;
}
#if !OS(MACOSX)
// Mac has no way to open a context menu based on a keyboard event.
bool WebViewImpl::sendContextMenuEvent(const WebKeyboardEvent& event)
{
// The contextMenuController() holds onto the last context menu that was
// popped up on the page until a new one is created. We need to clear
// this menu before propagating the event through the DOM so that we can
// detect if we create a new menu for this event, since we won't create
// a new menu if the DOM swallows the event and the defaultEventHandler does
// not run.
page()->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
Frame* focusedFrame = page()->focusController().focusedOrMainFrame();
if (!focusedFrame->isLocalFrame())
return false;
bool handled = toLocalFrame(focusedFrame)->eventHandler().sendContextMenuEventForKey();
m_contextMenuAllowed = false;
return handled;
}
#endif
void WebViewImpl::showContextMenuAtPoint(float x, float y, PassRefPtr<ContextMenuProvider> menuProvider)
{
if (!page()->mainFrame()->isLocalFrame())
return;
m_contextMenuAllowed = true;
page()->contextMenuController().clearContextMenu();
page()->contextMenuController().showContextMenuAtPoint(page()->deprecatedLocalMainFrame(), x, y, menuProvider);
m_contextMenuAllowed = false;
}
bool WebViewImpl::keyEventDefault(const WebKeyboardEvent& event)
{
LocalFrame* frame = toLocalFrame(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 = toLocalFrame(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;
}
void WebViewImpl::hideSelectPopup()
{
if (m_selectPopup)
m_selectPopup->hidePopup();
}
void WebViewImpl::popupOpened(PopupContainer* popupContainer)
{
ASSERT(!m_selectPopup);
m_selectPopup = popupContainer;
ASSERT(mainFrameImpl()->frame()->document());
Document& document = *mainFrameImpl()->frame()->document();
page()->frameHost().eventHandlerRegistry().didAddEventHandler(document, EventHandlerRegistry::WheelEvent);
}
void WebViewImpl::popupClosed(PopupContainer* popupContainer)
{
ASSERT(m_selectPopup);
m_selectPopup = nullptr;
ASSERT(mainFrameImpl()->frame()->document());
Document& document = *mainFrameImpl()->frame()->document();
// Remove the handler we added in |popupOpened| conditionally, because the
// Document may have already removed it, for instance, due to a navigation.
EventHandlerRegistry* registry = &document.frameHost()->eventHandlerRegistry();
if (registry->eventHandlerTargets(EventHandlerRegistry::WheelEvent)->contains(&document))
registry->didRemoveEventHandler(document, EventHandlerRegistry::WheelEvent);
}
PagePopup* WebViewImpl::openPagePopup(PagePopupClient* client, const IntRect& originBoundsInRootView)
{
ASSERT(client);
if (hasOpenedPopup())
hidePopups();
ASSERT(!m_pagePopup);
WebWidget* popupWidget = m_client->createPopupMenu(WebPopupTypePage);
ASSERT(popupWidget);
m_pagePopup = toWebPagePopupImpl(popupWidget);
if (!m_pagePopup->initialize(this, client, originBoundsInRootView)) {
m_pagePopup->closePopup();
m_pagePopup = nullptr;
}
return m_pagePopup.get();
}
void WebViewImpl::closePagePopup(PagePopup* popup)
{
ASSERT(popup);
WebPagePopupImpl* popupImpl = toWebPagePopupImpl(popup);
ASSERT(m_pagePopup.get() == popupImpl);
if (m_pagePopup.get() != popupImpl)
return;
m_pagePopup->closePopup();
m_pagePopup = nullptr;
}
Frame* WebViewImpl::focusedCoreFrame() const
{
return m_page ? m_page->focusController().focusedOrMainFrame() : 0;
}
WebViewImpl* WebViewImpl::fromPage(Page* page)
{
if (!page)
return 0;
return static_cast<WebViewImpl*>(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();
}
// Should happen after m_page.clear().
if (m_devToolsAgent)
m_devToolsAgent.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()
{
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->willStartLiveResize();
LocalFrame* frame = mainFrameImpl()->frame();
WebPluginContainerImpl* pluginContainer = WebLocalFrameImpl::pluginContainerFromFrame(frame);
if (pluginContainer)
pluginContainer->willStartLiveResize();
}
WebSize WebViewImpl::size()
{
return m_size;
}
void WebViewImpl::resizePinchViewport(const WebSize& newSize)
{
if (!pinchVirtualViewportEnabled())
return;
page()->frameHost().pinchViewport().setSize(newSize);
}
WebLocalFrameImpl* WebViewImpl::localFrameRootTemporary() const
{
// FIXME: This is a temporary method that finds the first localFrame in a traversal.
// This is equivalent to mainFrame() if the mainFrame is in-process. We need to create
// separate WebWidgets to be created by RenderWidgets, which are associated with *all*
// local frame roots, not just the first one in the tree. Until then, this limits us
// to having only one functioning connected LocalFrame subtree per process.
for (Frame* frame = page()->mainFrame(); frame; frame = frame->tree().traverseNext()) {
if (frame->isLocalRoot())
return WebLocalFrameImpl::fromFrame(toLocalFrame(frame));
}
return 0;
}
void WebViewImpl::performResize()
{
m_pageScaleConstraintsSet.didChangeViewSize(m_size);
updatePageDefinedViewportConstraints(localFrameRootTemporary()->frame()->document()->viewportDescription());
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 (!pinchVirtualViewportEnabled() && localFrameRootTemporary()->frameView())
localFrameRootTemporary()->frameView()->resize(m_size);
if (pinchVirtualViewportEnabled())
page()->frameHost().pinchViewport().setSize(m_size);
// When device emulation is enabled, device size values may change - they are
// usually set equal to the view size. These values are not considered viewport-dependent
// (see MediaQueryExp::isViewportDependent), since they are only viewport-dependent in emulation mode,
// and thus will not be invalidated in |FrameView::performPreLayoutTasks|.
// Therefore we should force explicit media queries invalidation here.
if (page()->inspectorController().deviceEmulationEnabled()) {
if (Document* document = localFrameRootTemporary()->frame()->document())
document->mediaQueryAffectingValueChanged();
}
}
void WebViewImpl::resize(const WebSize& newSize)
{
if (m_shouldAutoResize || m_size == newSize)
return;
FrameView* view = localFrameRootTemporary()->frameView();
if (!view)
return;
bool shouldAnchorAndRescaleViewport = settings()->mainFrameResizesAreOrientationChanges()
&& m_size.width && contentsSize().width() && newSize.width != m_size.width && !m_fullscreenController->isFullscreen();
float oldPageScaleFactor = pageScaleFactor();
float oldMinimumPageScaleFactor = minimumPageScaleFactor();
m_size = newSize;
ViewportAnchor viewportAnchor(&localFrameRootTemporary()->frame()->eventHandler());
if (shouldAnchorAndRescaleViewport) {
viewportAnchor.setAnchor(view->visibleContentRect(),
FloatSize(viewportAnchorXCoord, viewportAnchorYCoord));
}
// FIXME: TextAutosizer does not yet support out-of-process frames.
if (mainFrameImpl() && mainFrameImpl()->frame()->isLocalFrame())
{
// Avoids unnecessary invalidations while various bits of state in TextAutosizer are updated.
TextAutosizer::DeferUpdatePageInfo deferUpdatePageInfo(page());
performResize();
} else {
performResize();
}
if (settings()->viewportEnabled() && !m_fixedLayoutSizeLock) {
// Relayout immediately to recalculate the minimum scale limit.
if (view->needsLayout())
view->layout();
if (shouldAnchorAndRescaleViewport) {
float newPageScaleFactor = oldPageScaleFactor / oldMinimumPageScaleFactor * minimumPageScaleFactor();
IntSize scaledViewportSize = newSize;
scaledViewportSize.scale(1 / newPageScaleFactor);
setPageScaleFactor(newPageScaleFactor, viewportAnchor.computeOrigin(scaledViewportSize));
}
}
sendResizeEventAndRepaint();
}
void WebViewImpl::willEndLiveResize()
{
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->willEndLiveResize();
LocalFrame* frame = mainFrameImpl()->frame();
WebPluginContainerImpl* pluginContainer = WebLocalFrameImpl::pluginContainerFromFrame(frame);
if (pluginContainer)
pluginContainer->willEndLiveResize();
}
void WebViewImpl::willEnterFullScreen()
{
m_fullscreenController->willEnterFullScreen();
}
void WebViewImpl::didEnterFullScreen()
{
m_fullscreenController->didEnterFullScreen();
}
void WebViewImpl::willExitFullScreen()
{
m_fullscreenController->willExitFullScreen();
}
void WebViewImpl::didExitFullScreen()
{
m_fullscreenController->didExitFullScreen();
}
void WebViewImpl::beginFrame(const WebBeginFrameArgs& frameTime)
{
TRACE_EVENT0("blink", "WebViewImpl::beginFrame");
double monotonicFrameBeginTime = frameTime.lastFrameTimeMonotonic;
if (!monotonicFrameBeginTime)
monotonicFrameBeginTime = monotonicallyIncreasingTime();
// Create synthetic wheel events as necessary for fling.
if (m_gestureAnimation) {
if (m_gestureAnimation->animate(monotonicFrameBeginTime))
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);
}
}
if (!m_page)
return;
PageWidgetDelegate::animate(m_page.get(), monotonicFrameBeginTime);
if (m_continuousPaintingEnabled) {
ContinuousPainter::setNeedsDisplayRecursive(m_rootGraphicsLayer, m_pageOverlays.get());
m_client->scheduleAnimation();
}
}
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();
if (m_devToolsAgent)
m_devToolsAgent->didLayout();
}
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(), pageOverlays(), 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()->deprecatedLocalMainFrame()->view();
PaintBehavior oldPaintBehavior = view->paintBehavior();
view->setPaintBehavior(oldPaintBehavior | PaintBehaviorFlattenCompositingLayers);
PageWidgetDelegate::paint(m_page.get(), pageOverlays(), 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;
if (!page()->mainFrame()->isLocalFrame())
return false;
FrameView* view = page()->deprecatedLocalMainFrame()->view();
return view->isTrackingPaintInvalidations();
}
void WebViewImpl::themeChanged()
{
if (!page())
return;
if (!page()->mainFrame()->isLocalFrame())
return;
FrameView* view = page()->deprecatedLocalMainFrame()->view();
WebRect damagedRect(0, 0, m_size.width, m_size.height);
view->invalidateRect(damagedRect);
}
void WebViewImpl::enterFullScreenForElement(Element* element)
{
m_fullscreenController->enterFullScreenForElement(element);
}
void WebViewImpl::exitFullScreenForElement(Element* element)
{
m_fullscreenController->exitFullScreenForElement(element);
}
void WebViewImpl::clearCompositedSelectionBounds()
{
if (m_layerTreeView)
m_layerTreeView->clearSelection();
}
bool WebViewImpl::hasHorizontalScrollbar()
{
return mainFrameImpl()->frameView()->horizontalScrollbar();
}
bool WebViewImpl::hasVerticalScrollbar()
{
return mainFrameImpl()->frameView()->verticalScrollbar();
}
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::ContextMenu:
return EventTypeNames::contextmenu;
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)
{
UserGestureNotifier notifier(m_autofillClient, &m_userGestureObserved);
// On the first input event since page load, |notifier| instructs the
// autofill client to unblock values of password input fields of any forms
// on the page. There is a single input event, GestureTap, which can both
// be the first event after page load, and cause a form submission. In that
// case, the form submission happens before the autofill client is told
// to unblock the password values, and so the password values are not
// submitted. To avoid that, GestureTap is handled explicitly:
if (inputEvent.type == WebInputEvent::GestureTap && m_autofillClient) {
m_userGestureObserved = true;
m_autofillClient->firstUserGestureObserved();
}
TRACE_EVENT1("input", "WebViewImpl::handleInputEvent", "type", inputTypeToName(inputEvent.type).ascii());
// If we've started a drag and drop operation, ignore input events until
// we're done.
if (m_doingDragAndDrop)
return true;
if (m_devToolsAgent && m_devToolsAgent->handleInputEvent(m_page.get(), inputEvent))
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<const WebInputEvent*> currentEventChange(m_currentInputEvent, &inputEvent);
if (isPointerLocked() && WebInputEvent::isMouseEventType(inputEvent.type)) {
pointerLockMouseEvent(inputEvent);
return true;
}
if (m_mouseCaptureNode && WebInputEvent::isMouseEventType(inputEvent.type)) {
TRACE_EVENT1("input", "captured mouse event", "type", inputEvent.type);
// Save m_mouseCaptureNode since mouseCaptureLost() will clear it.
RefPtrWillBeRawPtr<Node> node = m_mouseCaptureNode;
// Not all platforms call mouseCaptureLost() directly.
if (inputEvent.type == WebInputEvent::MouseUp)
mouseCaptureLost();
OwnPtr<UserGestureIndicator> 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<const WebMouseEvent&>(inputEvent)),
eventType, static_cast<const WebMouseEvent&>(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<Frame> focusedFrame = m_page->focusController().focusedFrame();
if (focusedFrame && focusedFrame->isLocalFrame()) {
LocalFrame* localFrame = toLocalFrame(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->isTextFormControl()) {
element->updateFocusAppearance(true);
} else 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 {
hidePopups();
// Clear focus on the currently focused frame if any.
if (!m_page)
return;
LocalFrame* frame = m_page->mainFrame() && m_page->mainFrame()->isLocalFrame()
? m_page->deprecatedLocalMainFrame() : 0;
if (!frame)
return;
RefPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
if (focusedFrame && focusedFrame->isLocalFrame()) {
// Finish an ongoing composition to delete the composition node.
if (toLocalFrame(focusedFrame.get())->inputMethodController().hasComposition()) {
if (m_autofillClient)
m_autofillClient->setIgnoreTextChanges(true);
toLocalFrame(focusedFrame.get())->inputMethodController().confirmComposition();
if (m_autofillClient)
m_autofillClient->setIgnoreTextChanges(false);
}
m_imeAcceptEvents = false;
}
}
}
bool WebViewImpl::setComposition(
const WebString& text,
const WebVector<WebCompositionUnderline>& underlines,
int selectionStart,
int selectionEnd)
{
LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused || !m_imeAcceptEvents)
return false;
if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
return plugin->setComposition(text, underlines, selectionStart, selectionEnd);
// 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.
RefPtrWillBeRawPtr<Range> 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<CompositionUnderline> 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 = toLocalFrame(focusedCoreFrame());
if (!focused || !m_imeAcceptEvents)
return false;
if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
return plugin->confirmComposition(text, selectionBehavior);
return focused->inputMethodController().confirmCompositionOrInsertText(text, selectionBehavior == KeepSelection ? InputMethodController::KeepSelection : InputMethodController::DoNotKeepSelection);
}
bool WebViewImpl::compositionRange(size_t* location, size_t* length)
{
LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused || !m_imeAcceptEvents)
return false;
RefPtrWillBeRawPtr<Range> 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;
Frame* focusedFrame = focusedCoreFrame();
if (!focusedFrame->isLocalFrame())
return info;
LocalFrame* focused = toLocalFrame(focusedFrame);
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 (RefPtrWillBeRawPtr<Range> range = selection.selection().firstRange()) {
PlainTextRange plainTextRange(PlainTextRange::create(*element, *range.get()));
if (plainTextRange.isNotNull()) {
info.selectionStart = plainTextRange.start();
info.selectionEnd = plainTextRange.end();
}
}
if (RefPtrWillBeRawPtr<Range> 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 (isHTMLInputElement(*element)) {
HTMLInputElement& input = toHTMLInputElement(*element);
if (input.isDisabledOrReadOnly())
return WebTextInputTypeNone;
if (input.isPasswordField())
return WebTextInputTypePassword;
if (input.isSearchField())
return WebTextInputTypeSearch;
if (input.isEmailField())
return WebTextInputTypeEmail;
if (input.isNumberField())
return WebTextInputTypeNumber;
if (input.isTelephoneField())
return WebTextInputTypeTelephone;
if (input.isURLField())
return WebTextInputTypeURL;
if (input.isDateField())
return WebTextInputTypeDate;
if (input.isDateTimeLocalField())
return WebTextInputTypeDateTimeLocal;
if (input.isMonthField())
return WebTextInputTypeMonth;
if (input.isTimeField())
return WebTextInputTypeTime;
if (input.isWeekField())
return WebTextInputTypeWeek;
if (input.isTextField())
return WebTextInputTypeText;
return WebTextInputTypeNone;
}
if (isHTMLTextAreaElement(*element)) {
if (toHTMLTextAreaElement(*element).isDisabledOrReadOnly())
return WebTextInputTypeNone;
return WebTextInputTypeTextArea;
}
#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
if (element->isHTMLElement()) {
if (toHTMLElement(element)->isDateTimeFieldElement())
return WebTextInputTypeDateTimeField;
}
#endif
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()
{
if (!RuntimeEnabledFeatures::inputModeAttributeEnabled())
return WebString();
Element* element = focusedElement();
if (!element)
return WebString();
if (isHTMLInputElement(*element)) {
const HTMLInputElement& input = toHTMLInputElement(*element);
if (input.supportsInputModeAttribute())
return input.fastGetAttribute(HTMLNames::inputmodeAttr).lower();
return WebString();
}
if (isHTMLTextAreaElement(*element)) {
const HTMLTextAreaElement& textarea = toHTMLTextAreaElement(*element);
return textarea.fastGetAttribute(HTMLNames::inputmodeAttr).lower();
}
return WebString();
}
bool WebViewImpl::selectionBounds(WebRect& anchor, WebRect& focus) const
{
const Frame* frame = focusedCoreFrame();
if (!frame || !frame->isLocalFrame())
return false;
const LocalFrame* localFrame = toLocalFrame(frame);
if (!localFrame)
return false;
FrameSelection& selection = localFrame->selection();
if (selection.isCaret()) {
anchor = focus = selection.absoluteCaretBounds();
} else {
RefPtrWillBeRawPtr<Range> selectedRange = selection.toNormalizedRange();
if (!selectedRange)
return false;
RefPtrWillBeRawPtr<Range> 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));
if (pinchVirtualViewportEnabled()) {
// FIXME(http://crbug.com/371902) - We shouldn't have to do this
// manually, the contentsToWindow methods above should be fixed to do
// this.
IntPoint pinchViewportOffset =
roundedIntPoint(page()->frameHost().pinchViewport().visibleRect().location());
scaledAnchor.moveBy(-pinchViewportOffset);
scaledFocus.moveBy(-pinchViewportOffset);
}
scaledAnchor.scale(pageScaleFactor());
scaledFocus.scale(pageScaleFactor());
anchor = scaledAnchor;
focus = scaledFocus;
if (!selection.selection().isBaseFirst())
std::swap(anchor, focus);
return true;
}
InputMethodContext* WebViewImpl::inputMethodContext()
{
if (!m_imeAcceptEvents)
return 0;
LocalFrame* focusedFrame = toLocalFrame(focusedCoreFrame());
if (!focusedFrame)
return 0;
Element* target = focusedFrame->document()->focusedElement();
if (target && target->hasInputMethodContext())
return &target->inputMethodContext();
return 0;
}
WebPlugin* WebViewImpl::focusedPluginIfInputMethodSupported(LocalFrame* frame)
{
WebPluginContainerImpl* container = WebLocalFrameImpl::pluginContainerFromNode(frame, WebNode(focusedElement()));
if (container && container->supportsInputMethod())
return container->plugin();
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 = toLocalFrame(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 = toLocalFrame(focusedCoreFrame()))
return frame->selection().selection().isBaseFirst();
return false;
}
WebVector<WebCompositionUnderline> WebViewImpl::compositionUnderlines() const
{
const LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused)
return WebVector<WebCompositionUnderline>();
const Vector<CompositionUnderline>& underlines = focused->inputMethodController().customCompositionUnderlines();
WebVector<WebCompositionUnderline> 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<WebColor>(underline.color.rgb()), underline.thick, static_cast<WebColor>(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;
if (!m_page->mainFrame()->isLocalFrame())
return m_baseBackgroundColor;
FrameView* view = m_page->deprecatedLocalMainFrame()->view();
return view->documentBackgroundColor().rgb();
}
bool WebViewImpl::caretOrSelectionRange(size_t* location, size_t* length)
{
const LocalFrame* focused = toLocalFrame(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 = toLocalFrame(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;
}
void WebViewImpl::didAcquirePointerLock()
{
if (page())
page()->pointerLockController().didAcquirePointerLock();
}
void WebViewImpl::didNotAcquirePointerLock()
{
if (page())
page()->pointerLockController().didNotAcquirePointerLock();
}
void WebViewImpl::didLosePointerLock()
{
if (page())
page()->pointerLockController().didLosePointerLock();
}
void WebViewImpl::didChangeWindowResizerRect()
{
if (mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->windowResizerRectChanged();
}
// WebView --------------------------------------------------------------------
WebSettingsImpl* WebViewImpl::settingsImpl()
{
if (!m_webSettings)
m_webSettings = adoptPtr(new WebSettingsImpl(&m_page->settings(), &m_page->inspectorController()));
ASSERT(m_webSettings);
return m_webSettings.get();
}
WebSettings* WebViewImpl::settings()
{
return settingsImpl();
}
WebString WebViewImpl::pageEncoding() const
{
if (!m_page)
return WebString();
if (!m_page->mainFrame()->isLocalFrame())
return WebString();
// FIXME: Is this check needed?
if (!m_page->deprecatedLocalMainFrame()->document()->loader())
return WebString();
return m_page->deprecatedLocalMainFrame()->document()->encodingName();
}
void WebViewImpl::setPageEncoding(const WebString& encodingName)
{
if (!m_page)
return;
if (!m_page->mainFrame()->isLocalFrame())
return;
// Only change override encoding, don't change default encoding.
// Note that the new encoding must be 0 if it isn't supposed to be set.
AtomicString newEncodingName;
if (!encodingName.isEmpty())
newEncodingName = encodingName;
m_page->deprecatedLocalMainFrame()->loader().reload(NormalReload, KURL(), newEncodingName);
}
WebFrame* WebViewImpl::mainFrame()
{
return WebFrame::fromFrame(m_page ? m_page->mainFrame() : 0);
}
WebFrame* WebViewImpl::findFrameByName(
const WebString& name, WebFrame* relativeToFrame)
{
// FIXME: Either this should only deal with WebLocalFrames or it should move to WebFrame.
if (!relativeToFrame)
relativeToFrame = mainFrame();
Frame* frame = toWebLocalFrameImpl(relativeToFrame)->frame();
frame = frame->tree().find(name);
if (!frame || !frame->isLocalFrame())
return 0;
return WebLocalFrameImpl::fromFrame(toLocalFrame(frame));
}
WebFrame* WebViewImpl::focusedFrame()
{
return WebFrame::fromFrame(focusedCoreFrame());
}
void WebViewImpl::setFocusedFrame(WebFrame* frame)
{
if (!frame) {
// Clears the focused frame if any.
Frame* focusedFrame = focusedCoreFrame();
if (focusedFrame && focusedFrame->isLocalFrame())
toLocalFrame(focusedFrame)->selection().setFocused(false);
return;
}
LocalFrame* coreFrame = toWebLocalFrameImpl(frame)->frame();
coreFrame->page()->focusController().setFocusedFrame(coreFrame);
}
void WebViewImpl::setInitialFocus(bool reverse)
{
if (!m_page)
return;
Frame* frame = page()->focusController().focusedOrMainFrame();
if (frame->isLocalFrame()) {
if (Document* document = toLocalFrame(frame)->document())
document->setFocusedElement(nullptr);
}
page()->focusController().setInitialFocus(reverse ? FocusTypeBackward : FocusTypeForward);
}
void WebViewImpl::clearFocusedElement()
{
RefPtr<Frame> frame = focusedCoreFrame();
if (!frame || !frame->isLocalFrame())
return;
LocalFrame* localFrame = toLocalFrame(frame.get());
RefPtrWillBeRawPtr<Document> document = localFrame->document();
if (!document)
return;
RefPtrWillBeRawPtr<Element> 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