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/*
* Copyright (C) 2014 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.
*/
#ifndef WebFrameWidgetImpl_h
#define WebFrameWidgetImpl_h
#include "platform/graphics/GraphicsLayer.h"
#include "platform/scroll/ScrollTypes.h"
#include "public/platform/WebPoint.h"
#include "public/platform/WebSize.h"
#include "public/web/WebFrameWidget.h"
#include "public/web/WebInputEvent.h"
#include "web/PageWidgetDelegate.h"
#include "wtf/OwnPtr.h"
#include "wtf/RefCounted.h"
namespace blink {
class Frame;
class Element;
class LocalFrame;
class Page;
class RenderLayerCompositor;
class UserGestureToken;
class WebLayer;
class WebLayerTreeView;
class WebLocalFrameImpl;
class WebMouseEvent;
class WebMouseWheelEvent;
class WebViewImpl;
class WebFrameWidgetImpl final : public WebFrameWidget
, public PageWidgetEventHandler
, public RefCounted<WebFrameWidgetImpl> {
public:
static WebFrameWidgetImpl* create(WebWidgetClient*, WebLocalFrame*);
// WebWidget functions:
void close() override;
WebSize size() override;
void willStartLiveResize() override;
void resize(const WebSize&) override;
void resizePinchViewport(const WebSize&) override;
void willEndLiveResize() override;
void willEnterFullScreen() override;
void didEnterFullScreen() override;
void willExitFullScreen() override;
void didExitFullScreen() override;
void beginFrame(const WebBeginFrameArgs&) override;
void layout() override;
void paint(WebCanvas*, const WebRect&) override;
void compositeAndReadbackAsync(WebCompositeAndReadbackAsyncCallback*) override;
bool isTrackingRepaints() const override;
void themeChanged() override;
bool handleInputEvent(const WebInputEvent&) override;
void setCursorVisibilityState(bool isVisible) override;
bool hasTouchEventHandlersAt(const WebPoint&) override;
// FIXME(bokan): Old pinch path only - This should be removed once old pinch
// is removed.
void applyViewportDeltas(
const WebSize& scrollDelta,
float pageScaleDelta,
float topControlsDelta) override;
void applyViewportDeltas(
const WebSize& pinchViewportDelta,
const WebSize& mainFrameDelta,
const WebFloatSize& elasticOverscrollDelta,
float pageScaleDelta,
float topControlsDelta) override;
void mouseCaptureLost() override;
void setFocus(bool enable) override;
bool setComposition(
const WebString& text,
const WebVector<WebCompositionUnderline>& underlines,
int selectionStart, int selectionEnd) override;
bool confirmComposition() override;
bool confirmComposition(ConfirmCompositionBehavior selectionBehavior) override;
bool confirmComposition(const WebString& text) override;
bool compositionRange(size_t* location, size_t* length) override;
WebTextInputInfo textInputInfo() override;
WebColor backgroundColor() const override;
bool selectionBounds(WebRect& anchor, WebRect& focus) const override;
bool selectionTextDirection(WebTextDirection& start, WebTextDirection& end) const override;
bool isSelectionAnchorFirst() const override;
bool caretOrSelectionRange(size_t* location, size_t* length) override;
void setTextDirection(WebTextDirection) override;
bool isAcceleratedCompositingActive() const override;
void willCloseLayerTreeView() override;
void didChangeWindowResizerRect() override;
WebWidgetClient* client() const { return m_client; }
Frame* focusedCoreFrame() const;
// Returns the currently focused Element or null if no element has focus.
Element* focusedElement() const;
void scheduleAnimation();
RenderLayerCompositor* compositor() const;
void suppressInvalidations(bool enable);
void setRootGraphicsLayer(GraphicsLayer*);
// Exposed for the purpose of overriding device metrics.
void sendResizeEventAndRepaint();
void updateMainFrameLayoutSize();
// Returns the page object associated with this widget. This may be null when
// the page is shutting down, but will be valid at all other times.
Page* page() const { return m_page; }
// Returns true if the event leads to scrolling.
static bool mapKeyCodeForScroll(
int keyCode,
ScrollDirection*,
ScrollGranularity*);
private:
friend class WebFrameWidget; // For WebFrameWidget::create.
friend class WTF::RefCounted<WebFrameWidgetImpl>;
explicit WebFrameWidgetImpl(WebWidgetClient*, WebLocalFrame*);
~WebFrameWidgetImpl();
// Returns true if the event was actually processed.
bool keyEventDefault(const WebKeyboardEvent&);
// Returns true if the view was scrolled.
bool scrollViewWithKeyboard(int keyCode, int modifiers);
void initializeLayerTreeView();
void setIsAcceleratedCompositingActive(bool);
void updateLayerTreeViewport();
void updateLayerTreeBackgroundColor();
void updateLayerTreeDeviceScaleFactor();
bool isTransparent() const;
// PageWidgetEventHandler functions
void handleMouseLeave(LocalFrame&, const WebMouseEvent&) override;
void handleMouseDown(LocalFrame&, const WebMouseEvent&) override;
void handleMouseUp(LocalFrame&, const WebMouseEvent&) override;
bool handleMouseWheel(LocalFrame&, const WebMouseWheelEvent&) override;
bool handleGestureEvent(const WebGestureEvent&) override;
bool handleKeyEvent(const WebKeyboardEvent&) override;
bool handleCharEvent(const WebKeyboardEvent&) override;
WebWidgetClient* m_client;
// WebFrameWidget is associated with a subtree of the frame tree, corresponding to a maximal
// connected tree of LocalFrames. This member points to the root of that subtree.
WebLocalFrameImpl* m_localRoot;
WebSize m_size;
// If set, the (plugin) node which has mouse capture.
RefPtrWillBePersistent<Node> m_mouseCaptureNode;
RefPtr<UserGestureToken> m_mouseCaptureGestureToken;
WebLayerTreeView* m_layerTreeView;
WebLayer* m_rootLayer;
GraphicsLayer* m_rootGraphicsLayer;
bool m_isAcceleratedCompositingActive;
bool m_layerTreeViewClosed;
// FIXME: The lifetimes of these objects relative to the WebFrameWidget are not clear,
// and it might be better to replace them with lookups based on the localRoot.
WebViewImpl* m_webView;
Page* m_page;
bool m_suppressNextKeypressEvent;
bool m_ignoreInputEvents;
static const WebInputEvent* m_currentInputEvent;
};
} // namespace blink
#endif
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