| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_ |
| |
| #include <deque> |
| #include <list> |
| #include <map> |
| #include <queue> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "base/gtest_prod_util.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/observer_list.h" |
| #include "base/process/kill.h" |
| #include "base/strings/string16.h" |
| #include "base/time/time.h" |
| #include "base/timer/timer.h" |
| #include "build/build_config.h" |
| #include "cc/resources/shared_bitmap.h" |
| #include "content/browser/accessibility/browser_accessibility_manager.h" |
| #include "content/browser/renderer_host/event_with_latency_info.h" |
| #include "content/browser/renderer_host/input/input_ack_handler.h" |
| #include "content/browser/renderer_host/input/input_router_client.h" |
| #include "content/browser/renderer_host/input/synthetic_gesture.h" |
| #include "content/browser/renderer_host/input/touch_emulator_client.h" |
| #include "content/common/input/input_event_ack_state.h" |
| #include "content/common/input/synthetic_gesture_packet.h" |
| #include "content/common/view_message_enums.h" |
| #include "content/public/browser/render_widget_host.h" |
| #include "content/public/common/page_zoom.h" |
| #include "ipc/ipc_listener.h" |
| #include "ui/base/ime/text_input_mode.h" |
| #include "ui/base/ime/text_input_type.h" |
| #include "ui/events/latency_info.h" |
| #include "ui/gfx/native_widget_types.h" |
| |
| struct AcceleratedSurfaceMsg_BufferPresented_Params; |
| struct ViewHostMsg_BeginSmoothScroll_Params; |
| struct ViewHostMsg_CompositorSurfaceBuffersSwapped_Params; |
| struct ViewHostMsg_SelectionBounds_Params; |
| struct ViewHostMsg_TextInputState_Params; |
| struct ViewHostMsg_UpdateRect_Params; |
| |
| namespace base { |
| class TimeTicks; |
| } |
| |
| namespace cc { |
| class CompositorFrame; |
| class CompositorFrameAck; |
| } |
| |
| namespace gfx { |
| class Range; |
| } |
| |
| namespace ui { |
| class KeyEvent; |
| } |
| |
| namespace blink { |
| class WebInputEvent; |
| class WebMouseEvent; |
| struct WebCompositionUnderline; |
| struct WebScreenInfo; |
| } |
| |
| #if defined(OS_ANDROID) |
| namespace blink { |
| class WebLayer; |
| } |
| #endif |
| |
| namespace content { |
| class InputRouter; |
| class MockRenderWidgetHost; |
| class RenderWidgetHostDelegate; |
| class RenderWidgetHostViewBase; |
| class SyntheticGestureController; |
| class TimeoutMonitor; |
| class TouchEmulator; |
| class WebCursor; |
| struct EditCommand; |
| |
| // This implements the RenderWidgetHost interface that is exposed to |
| // embedders of content, and adds things only visible to content. |
| class CONTENT_EXPORT RenderWidgetHostImpl |
| : virtual public RenderWidgetHost, |
| public InputRouterClient, |
| public InputAckHandler, |
| public TouchEmulatorClient, |
| public IPC::Listener, |
| public BrowserAccessibilityDelegate { |
| public: |
| // routing_id can be MSG_ROUTING_NONE, in which case the next available |
| // routing id is taken from the RenderProcessHost. |
| // If this object outlives |delegate|, DetachDelegate() must be called when |
| // |delegate| goes away. |
| RenderWidgetHostImpl(RenderWidgetHostDelegate* delegate, |
| RenderProcessHost* process, |
| int routing_id, |
| bool hidden); |
| virtual ~RenderWidgetHostImpl(); |
| |
| // Similar to RenderWidgetHost::FromID, but returning the Impl object. |
| static RenderWidgetHostImpl* FromID(int32 process_id, int32 routing_id); |
| |
| // Returns all RenderWidgetHosts including swapped out ones for |
| // internal use. The public interface |
| // RendgerWidgetHost::GetRenderWidgetHosts only returns active ones. |
| static scoped_ptr<RenderWidgetHostIterator> GetAllRenderWidgetHosts(); |
| |
| // Use RenderWidgetHostImpl::From(rwh) to downcast a |
| // RenderWidgetHost to a RenderWidgetHostImpl. Internally, this |
| // uses RenderWidgetHost::AsRenderWidgetHostImpl(). |
| static RenderWidgetHostImpl* From(RenderWidgetHost* rwh); |
| |
| void set_hung_renderer_delay_ms(const base::TimeDelta& timeout) { |
| hung_renderer_delay_ms_ = timeout.InMilliseconds(); |
| } |
| |
| // RenderWidgetHost implementation. |
| virtual void UpdateTextDirection(blink::WebTextDirection direction) OVERRIDE; |
| virtual void NotifyTextDirection() OVERRIDE; |
| virtual void Focus() OVERRIDE; |
| virtual void Blur() OVERRIDE; |
| virtual void SetActive(bool active) OVERRIDE; |
| virtual void CopyFromBackingStore( |
| const gfx::Rect& src_rect, |
| const gfx::Size& accelerated_dst_size, |
| const base::Callback<void(bool, const SkBitmap&)>& callback, |
| const SkBitmap::Config& bitmap_config) OVERRIDE; |
| virtual bool CanCopyFromBackingStore() OVERRIDE; |
| #if defined(OS_ANDROID) |
| virtual void LockBackingStore() OVERRIDE; |
| virtual void UnlockBackingStore() OVERRIDE; |
| #endif |
| virtual void EnableFullAccessibilityMode() OVERRIDE; |
| virtual bool IsFullAccessibilityModeForTesting() OVERRIDE; |
| virtual void EnableTreeOnlyAccessibilityMode() OVERRIDE; |
| virtual bool IsTreeOnlyAccessibilityModeForTesting() OVERRIDE; |
| virtual void ForwardMouseEvent( |
| const blink::WebMouseEvent& mouse_event) OVERRIDE; |
| virtual void ForwardWheelEvent( |
| const blink::WebMouseWheelEvent& wheel_event) OVERRIDE; |
| virtual void ForwardKeyboardEvent( |
| const NativeWebKeyboardEvent& key_event) OVERRIDE; |
| virtual const gfx::Vector2d& GetLastScrollOffset() const OVERRIDE; |
| virtual RenderProcessHost* GetProcess() const OVERRIDE; |
| virtual int GetRoutingID() const OVERRIDE; |
| virtual RenderWidgetHostView* GetView() const OVERRIDE; |
| virtual bool IsLoading() const OVERRIDE; |
| virtual bool IsRenderView() const OVERRIDE; |
| virtual void ResizeRectChanged(const gfx::Rect& new_rect) OVERRIDE; |
| virtual void RestartHangMonitorTimeout() OVERRIDE; |
| virtual void SetIgnoreInputEvents(bool ignore_input_events) OVERRIDE; |
| virtual void Stop() OVERRIDE; |
| virtual void WasResized() OVERRIDE; |
| virtual void AddKeyPressEventCallback( |
| const KeyPressEventCallback& callback) OVERRIDE; |
| virtual void RemoveKeyPressEventCallback( |
| const KeyPressEventCallback& callback) OVERRIDE; |
| virtual void AddMouseEventCallback( |
| const MouseEventCallback& callback) OVERRIDE; |
| virtual void RemoveMouseEventCallback( |
| const MouseEventCallback& callback) OVERRIDE; |
| virtual void GetWebScreenInfo(blink::WebScreenInfo* result) OVERRIDE; |
| |
| virtual SkBitmap::Config PreferredReadbackFormat() OVERRIDE; |
| |
| // BrowserAccessibilityDelegate |
| virtual void AccessibilitySetFocus(int acc_obj_id) OVERRIDE; |
| virtual void AccessibilityDoDefaultAction(int acc_obj_id) OVERRIDE; |
| virtual void AccessibilityShowMenu(int acc_obj_id) OVERRIDE; |
| virtual void AccessibilityScrollToMakeVisible( |
| int acc_obj_id, gfx::Rect subfocus) OVERRIDE; |
| virtual void AccessibilityScrollToPoint( |
| int acc_obj_id, gfx::Point point) OVERRIDE; |
| virtual void AccessibilitySetTextSelection( |
| int acc_obj_id, int start_offset, int end_offset) OVERRIDE; |
| virtual bool AccessibilityViewHasFocus() const OVERRIDE; |
| virtual gfx::Rect AccessibilityGetViewBounds() const OVERRIDE; |
| virtual gfx::Point AccessibilityOriginInScreen(const gfx::Rect& bounds) |
| const OVERRIDE; |
| virtual void AccessibilityHitTest(const gfx::Point& point) OVERRIDE; |
| virtual void AccessibilityFatalError() OVERRIDE; |
| |
| const NativeWebKeyboardEvent* GetLastKeyboardEvent() const; |
| |
| // Notification that the screen info has changed. |
| void NotifyScreenInfoChanged(); |
| |
| // Invalidates the cached screen info so that next resize request |
| // will carry the up to date screen info. Unlike |
| // |NotifyScreenInfoChanged|, this doesn't send a message to the renderer. |
| void InvalidateScreenInfo(); |
| |
| // Sets the View of this RenderWidgetHost. |
| void SetView(RenderWidgetHostViewBase* view); |
| |
| int surface_id() const { return surface_id_; } |
| |
| bool empty() const { return current_size_.IsEmpty(); } |
| |
| // Called when a renderer object already been created for this host, and we |
| // just need to be attached to it. Used for window.open, <select> dropdown |
| // menus, and other times when the renderer initiates creating an object. |
| virtual void Init(); |
| |
| // Tells the renderer to die and then calls Destroy(). |
| virtual void Shutdown(); |
| |
| // IPC::Listener |
| virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE; |
| |
| // Sends a message to the corresponding object in the renderer. |
| virtual bool Send(IPC::Message* msg) OVERRIDE; |
| |
| // Called to notify the RenderWidget that it has been hidden or restored from |
| // having been hidden. |
| void WasHidden(); |
| void WasShown(); |
| |
| // Returns true if the RenderWidget is hidden. |
| bool is_hidden() const { return is_hidden_; } |
| |
| // Called to notify the RenderWidget that its associated native window |
| // got/lost focused. |
| virtual void GotFocus(); |
| virtual void LostCapture(); |
| |
| // Called to notify the RenderWidget that it has lost the mouse lock. |
| virtual void LostMouseLock(); |
| |
| // Noifies the RenderWidget of the current mouse cursor visibility state. |
| void SendCursorVisibilityState(bool is_visible); |
| |
| // Notifies the RenderWidgetHost that the View was destroyed. |
| void ViewDestroyed(); |
| |
| // Indicates if the page has finished loading. |
| void SetIsLoading(bool is_loading); |
| |
| // Pause for a moment to wait for pending repaint or resize messages sent to |
| // the renderer to arrive. If pending resize messages are for an old window |
| // size, then also pump through a new resize message if there is time. |
| void PauseForPendingResizeOrRepaints(); |
| |
| // Whether pausing may be useful. |
| bool CanPauseForPendingResizeOrRepaints(); |
| |
| // Wait for a surface matching the size of the widget's view, possibly |
| // blocking until the renderer sends a new frame. |
| void WaitForSurface(); |
| |
| // GPU accelerated version of GetBackingStore function. This will |
| // trigger a re-composite to the view. It may fail if a resize is pending, or |
| // if a composite has already been requested and not acked yet. |
| bool ScheduleComposite(); |
| |
| // Starts a hang monitor timeout. If there's already a hang monitor timeout |
| // the new one will only fire if it has a shorter delay than the time |
| // left on the existing timeouts. |
| void StartHangMonitorTimeout(base::TimeDelta delay); |
| |
| // Stops all existing hang monitor timeouts and assumes the renderer is |
| // responsive. |
| void StopHangMonitorTimeout(); |
| |
| // Forwards the given message to the renderer. These are called by the view |
| // when it has received a message. |
| void ForwardGestureEventWithLatencyInfo( |
| const blink::WebGestureEvent& gesture_event, |
| const ui::LatencyInfo& ui_latency); |
| void ForwardTouchEventWithLatencyInfo( |
| const blink::WebTouchEvent& touch_event, |
| const ui::LatencyInfo& ui_latency); |
| void ForwardMouseEventWithLatencyInfo( |
| const blink::WebMouseEvent& mouse_event, |
| const ui::LatencyInfo& ui_latency); |
| void ForwardWheelEventWithLatencyInfo( |
| const blink::WebMouseWheelEvent& wheel_event, |
| const ui::LatencyInfo& ui_latency); |
| |
| // TouchEmulatorClient overrides. |
| virtual void ForwardGestureEvent( |
| const blink::WebGestureEvent& gesture_event) OVERRIDE; |
| virtual void ForwardTouchEvent( |
| const blink::WebTouchEvent& touch_event) OVERRIDE; |
| virtual void SetCursor(const WebCursor& cursor) OVERRIDE; |
| virtual void ShowContextMenuAtPoint(const gfx::Point& point) OVERRIDE; |
| |
| // Queues a synthetic gesture for testing purposes. Invokes the on_complete |
| // callback when the gesture is finished running. |
| void QueueSyntheticGesture( |
| scoped_ptr<SyntheticGesture> synthetic_gesture, |
| const base::Callback<void(SyntheticGesture::Result)>& on_complete); |
| |
| void CancelUpdateTextDirection(); |
| |
| // Called when a mouse click/gesture tap activates the renderer. |
| virtual void OnPointerEventActivate(); |
| |
| // Notifies the renderer whether or not the input method attached to this |
| // process is activated. |
| // When the input method is activated, a renderer process sends IPC messages |
| // to notify the status of its composition node. (This message is mainly used |
| // for notifying the position of the input cursor so that the browser can |
| // display input method windows under the cursor.) |
| void SetInputMethodActive(bool activate); |
| |
| // Notifies the renderer changes of IME candidate window state. |
| void CandidateWindowShown(); |
| void CandidateWindowUpdated(); |
| void CandidateWindowHidden(); |
| |
| // Update the composition node of the renderer (or WebKit). |
| // WebKit has a special node (a composition node) for input method to change |
| // its text without affecting any other DOM nodes. When the input method |
| // (attached to the browser) updates its text, the browser sends IPC messages |
| // to update the composition node of the renderer. |
| // (Read the comments of each function for its detail.) |
| |
| // Sets the text of the composition node. |
| // This function can also update the cursor position and mark the specified |
| // range in the composition node. |
| // A browser should call this function: |
| // * when it receives a WM_IME_COMPOSITION message with a GCS_COMPSTR flag |
| // (on Windows); |
| // * when it receives a "preedit_changed" signal of GtkIMContext (on Linux); |
| // * when markedText of NSTextInput is called (on Mac). |
| void ImeSetComposition( |
| const base::string16& text, |
| const std::vector<blink::WebCompositionUnderline>& underlines, |
| int selection_start, |
| int selection_end); |
| |
| // Finishes an ongoing composition with the specified text. |
| // A browser should call this function: |
| // * when it receives a WM_IME_COMPOSITION message with a GCS_RESULTSTR flag |
| // (on Windows); |
| // * when it receives a "commit" signal of GtkIMContext (on Linux); |
| // * when insertText of NSTextInput is called (on Mac). |
| void ImeConfirmComposition(const base::string16& text, |
| const gfx::Range& replacement_range, |
| bool keep_selection); |
| |
| // Cancels an ongoing composition. |
| void ImeCancelComposition(); |
| |
| // This is for derived classes to give us access to the resizer rect. |
| // And to also expose it to the RenderWidgetHostView. |
| virtual gfx::Rect GetRootWindowResizerRect() const; |
| |
| bool ignore_input_events() const { |
| return ignore_input_events_; |
| } |
| |
| bool input_method_active() const { |
| return input_method_active_; |
| } |
| |
| // Whether forwarded WebInputEvents should be ignored. True if either |
| // |ignore_input_events_| or |process_->IgnoreInputEvents()| is true. |
| bool IgnoreInputEvents() const; |
| |
| // Event queries delegated to the |input_router_|. |
| bool ShouldForwardTouchEvent() const; |
| |
| bool has_touch_handler() const { return has_touch_handler_; } |
| |
| // Notification that the user has made some kind of input that could |
| // perform an action. See OnUserGesture for more details. |
| void StartUserGesture(); |
| |
| // Set the RenderView background transparency. |
| void SetBackgroundOpaque(bool opaque); |
| |
| // Notifies the renderer that the next key event is bound to one or more |
| // pre-defined edit commands |
| void SetEditCommandsForNextKeyEvent( |
| const std::vector<EditCommand>& commands); |
| |
| // Gets the accessibility mode. |
| AccessibilityMode accessibility_mode() const { |
| return accessibility_mode_; |
| } |
| |
| // Adds the given accessibility mode to the current accessibility mode bitmap. |
| void AddAccessibilityMode(AccessibilityMode mode); |
| |
| // Removes the given accessibility mode from the current accessibility mode |
| // bitmap, managing the bits that are shared with other modes such that a |
| // bit will only be turned off when all modes that depend on it have been |
| // removed. |
| void RemoveAccessibilityMode(AccessibilityMode mode); |
| |
| // Resets the accessibility mode to the default setting in |
| // BrowserStateAccessibilityImpl. |
| void ResetAccessibilityMode(); |
| |
| #if defined(OS_WIN) |
| void SetParentNativeViewAccessible( |
| gfx::NativeViewAccessible accessible_parent); |
| gfx::NativeViewAccessible GetParentNativeViewAccessible() const; |
| #endif |
| |
| // Executes the edit command on the RenderView. |
| void ExecuteEditCommand(const std::string& command, |
| const std::string& value); |
| |
| // Tells the renderer to scroll the currently focused node into rect only if |
| // the currently focused node is a Text node (textfield, text area or content |
| // editable divs). |
| void ScrollFocusedEditableNodeIntoRect(const gfx::Rect& rect); |
| |
| // Requests the renderer to move the caret selection towards the point. |
| void MoveCaret(const gfx::Point& point); |
| |
| // Called when the reponse to a pending mouse lock request has arrived. |
| // Returns true if |allowed| is true and the mouse has been successfully |
| // locked. |
| bool GotResponseToLockMouseRequest(bool allowed); |
| |
| // Tells the RenderWidget about the latest vsync parameters. |
| // Note: Make sure the timebase was obtained using |
| // base::TimeTicks::HighResNow. Using the non-high res timer will result in |
| // incorrect synchronization across processes. |
| virtual void UpdateVSyncParameters(base::TimeTicks timebase, |
| base::TimeDelta interval); |
| |
| // Called by the view in response to AcceleratedSurfaceBuffersSwapped or |
| // AcceleratedSurfacePostSubBuffer. |
| static void AcknowledgeBufferPresent( |
| int32 route_id, |
| int gpu_host_id, |
| const AcceleratedSurfaceMsg_BufferPresented_Params& params); |
| |
| // Called by the view in response to OnSwapCompositorFrame. |
| static void SendSwapCompositorFrameAck( |
| int32 route_id, |
| uint32 output_surface_id, |
| int renderer_host_id, |
| const cc::CompositorFrameAck& ack); |
| |
| // Called by the view to return resources to the compositor. |
| static void SendReclaimCompositorResources(int32 route_id, |
| uint32 output_surface_id, |
| int renderer_host_id, |
| const cc::CompositorFrameAck& ack); |
| |
| void set_allow_privileged_mouse_lock(bool allow) { |
| allow_privileged_mouse_lock_ = allow; |
| } |
| |
| // Resets state variables related to tracking pending size and painting. |
| // |
| // We need to reset these flags when we want to repaint the contents of |
| // browser plugin in this RWH. Resetting these flags will ensure we ignore |
| // any previous pending acks that are not relevant upon repaint. |
| void ResetSizeAndRepaintPendingFlags(); |
| |
| void DetachDelegate(); |
| |
| // Update the renderer's cache of the screen rect of the view and window. |
| void SendScreenRects(); |
| |
| // Suppreses future char events until a keydown. See |
| // suppress_next_char_events_. |
| void SuppressNextCharEvents(); |
| |
| // Called by RenderWidgetHostView in response to OnSetNeedsFlushInput. |
| void FlushInput(); |
| |
| // InputRouterClient |
| virtual void SetNeedsFlush() OVERRIDE; |
| |
| // Indicates whether the renderer drives the RenderWidgetHosts's size or the |
| // other way around. |
| bool should_auto_resize() { return should_auto_resize_; } |
| |
| void ComputeTouchLatency(const ui::LatencyInfo& latency_info); |
| void FrameSwapped(const ui::LatencyInfo& latency_info); |
| void DidReceiveRendererFrame(); |
| |
| // Returns the ID that uniquely describes this component to the latency |
| // subsystem. |
| int64 GetLatencyComponentId(); |
| |
| static void CompositorFrameDrawn( |
| const std::vector<ui::LatencyInfo>& latency_info); |
| |
| // Don't check whether we expected a resize ack during layout tests. |
| static void DisableResizeAckCheckForTesting(); |
| |
| void WindowSnapshotAsyncCallback( |
| int routing_id, |
| int snapshot_id, |
| gfx::Size snapshot_size, |
| scoped_refptr<base::RefCountedBytes> png_data); |
| |
| // LatencyComponents generated in the renderer must have component IDs |
| // provided to them by the browser process. This function adds the correct |
| // component ID where necessary. |
| void AddLatencyInfoComponentIds(ui::LatencyInfo* latency_info); |
| |
| InputRouter* input_router() { return input_router_.get(); } |
| |
| protected: |
| virtual RenderWidgetHostImpl* AsRenderWidgetHostImpl() OVERRIDE; |
| |
| // Create a LatencyInfo struct with INPUT_EVENT_LATENCY_RWH_COMPONENT |
| // component if it is not already in |original|. And if |original| is |
| // not NULL, it is also merged into the resulting LatencyInfo. |
| ui::LatencyInfo CreateRWHLatencyInfoIfNotExist( |
| const ui::LatencyInfo* original, blink::WebInputEvent::Type type); |
| |
| // Called when we receive a notification indicating that the renderer |
| // process has gone. This will reset our state so that our state will be |
| // consistent if a new renderer is created. |
| void RendererExited(base::TerminationStatus status, int exit_code); |
| |
| // Retrieves an id the renderer can use to refer to its view. |
| // This is used for various IPC messages, including plugins. |
| gfx::NativeViewId GetNativeViewId() const; |
| |
| // Retrieves an id for the surface that the renderer can draw to |
| // when accelerated compositing is enabled. |
| gfx::GLSurfaceHandle GetCompositingSurface(); |
| |
| // --------------------------------------------------------------------------- |
| // The following methods are overridden by RenderViewHost to send upwards to |
| // its delegate. |
| |
| // Called when a mousewheel event was not processed by the renderer. |
| virtual void UnhandledWheelEvent(const blink::WebMouseWheelEvent& event) {} |
| |
| // Notification that the user has made some kind of input that could |
| // perform an action. The gestures that count are 1) any mouse down |
| // event and 2) enter or space key presses. |
| virtual void OnUserGesture() {} |
| |
| // Callbacks for notification when the renderer becomes unresponsive to user |
| // input events, and subsequently responsive again. |
| virtual void NotifyRendererUnresponsive() {} |
| virtual void NotifyRendererResponsive() {} |
| |
| // Called when auto-resize resulted in the renderer size changing. |
| virtual void OnRenderAutoResized(const gfx::Size& new_size) {} |
| |
| // --------------------------------------------------------------------------- |
| |
| // RenderViewHost overrides this method to impose further restrictions on when |
| // to allow mouse lock. |
| // Once the request is approved or rejected, GotResponseToLockMouseRequest() |
| // will be called. |
| virtual void RequestToLockMouse(bool user_gesture, |
| bool last_unlocked_by_target); |
| |
| void RejectMouseLockOrUnlockIfNecessary(); |
| bool IsMouseLocked() const; |
| |
| // RenderViewHost overrides this method to report when in fullscreen mode. |
| virtual bool IsFullscreen() const; |
| |
| // Indicates if the render widget host should track the render widget's size |
| // as opposed to visa versa. |
| void SetShouldAutoResize(bool enable); |
| |
| // Expose increment/decrement of the in-flight event count, so |
| // RenderViewHostImpl can account for in-flight beforeunload/unload events. |
| int increment_in_flight_event_count() { return ++in_flight_event_count_; } |
| int decrement_in_flight_event_count() { return --in_flight_event_count_; } |
| |
| // The View associated with the RenderViewHost. The lifetime of this object |
| // is associated with the lifetime of the Render process. If the Renderer |
| // crashes, its View is destroyed and this pointer becomes NULL, even though |
| // render_view_host_ lives on to load another URL (creating a new View while |
| // doing so). |
| RenderWidgetHostViewBase* view_; |
| |
| // true if a renderer has once been valid. We use this flag to display a sad |
| // tab only when we lose our renderer and not if a paint occurs during |
| // initialization. |
| bool renderer_initialized_; |
| |
| // This value indicates how long to wait before we consider a renderer hung. |
| int hung_renderer_delay_ms_; |
| |
| private: |
| friend class MockRenderWidgetHost; |
| |
| // Tell this object to destroy itself. |
| void Destroy(); |
| |
| // Called by |hang_timeout_monitor_| on delayed response from the renderer. |
| void RendererIsUnresponsive(); |
| |
| // Called if we know the renderer is responsive. When we currently think the |
| // renderer is unresponsive, this will clear that state and call |
| // NotifyRendererResponsive. |
| void RendererIsResponsive(); |
| |
| // IPC message handlers |
| void OnRenderViewReady(); |
| void OnRenderProcessGone(int status, int error_code); |
| void OnClose(); |
| void OnUpdateScreenRectsAck(); |
| void OnRequestMove(const gfx::Rect& pos); |
| void OnSetTooltipText(const base::string16& tooltip_text, |
| blink::WebTextDirection text_direction_hint); |
| #if defined(OS_MACOSX) |
| void OnCompositorSurfaceBuffersSwapped( |
| const ViewHostMsg_CompositorSurfaceBuffersSwapped_Params& params); |
| #endif |
| bool OnSwapCompositorFrame(const IPC::Message& message); |
| void OnFlingingStopped(); |
| void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params); |
| void OnQueueSyntheticGesture(const SyntheticGesturePacket& gesture_packet); |
| virtual void OnFocus(); |
| virtual void OnBlur(); |
| void OnSetCursor(const WebCursor& cursor); |
| void OnSetTouchEventEmulationEnabled(bool enabled, bool allow_pinch); |
| void OnTextInputStateChanged( |
| const ViewHostMsg_TextInputState_Params& params); |
| |
| #if defined(OS_MACOSX) || defined(USE_AURA) |
| void OnImeCompositionRangeChanged( |
| const gfx::Range& range, |
| const std::vector<gfx::Rect>& character_bounds); |
| #endif |
| void OnImeCancelComposition(); |
| void OnLockMouse(bool user_gesture, |
| bool last_unlocked_by_target, |
| bool privileged); |
| void OnUnlockMouse(); |
| void OnShowDisambiguationPopup(const gfx::Rect& rect, |
| const gfx::Size& size, |
| const cc::SharedBitmapId& id); |
| #if defined(OS_WIN) |
| void OnWindowlessPluginDummyWindowCreated( |
| gfx::NativeViewId dummy_activation_window); |
| void OnWindowlessPluginDummyWindowDestroyed( |
| gfx::NativeViewId dummy_activation_window); |
| #endif |
| void OnSelectionChanged(const base::string16& text, |
| size_t offset, |
| const gfx::Range& range); |
| void OnSelectionBoundsChanged( |
| const ViewHostMsg_SelectionBounds_Params& params); |
| void OnSnapshot(bool success, const SkBitmap& bitmap); |
| |
| // Called (either immediately or asynchronously) after we're done with our |
| // BackingStore and can send an ACK to the renderer so it can paint onto it |
| // again. |
| void DidUpdateBackingStore(const ViewHostMsg_UpdateRect_Params& params, |
| const base::TimeTicks& paint_start); |
| |
| // Give key press listeners a chance to handle this key press. This allow |
| // widgets that don't have focus to still handle key presses. |
| bool KeyPressListenersHandleEvent(const NativeWebKeyboardEvent& event); |
| |
| // InputRouterClient |
| virtual InputEventAckState FilterInputEvent( |
| const blink::WebInputEvent& event, |
| const ui::LatencyInfo& latency_info) OVERRIDE; |
| virtual void IncrementInFlightEventCount() OVERRIDE; |
| virtual void DecrementInFlightEventCount() OVERRIDE; |
| virtual void OnHasTouchEventHandlers(bool has_handlers) OVERRIDE; |
| virtual void DidFlush() OVERRIDE; |
| virtual void DidOverscroll(const DidOverscrollParams& params) OVERRIDE; |
| |
| // InputAckHandler |
| virtual void OnKeyboardEventAck(const NativeWebKeyboardEvent& event, |
| InputEventAckState ack_result) OVERRIDE; |
| virtual void OnWheelEventAck(const MouseWheelEventWithLatencyInfo& event, |
| InputEventAckState ack_result) OVERRIDE; |
| virtual void OnTouchEventAck(const TouchEventWithLatencyInfo& event, |
| InputEventAckState ack_result) OVERRIDE; |
| virtual void OnGestureEventAck(const GestureEventWithLatencyInfo& event, |
| InputEventAckState ack_result) OVERRIDE; |
| virtual void OnUnexpectedEventAck(UnexpectedEventAckType type) OVERRIDE; |
| |
| void OnSyntheticGestureCompleted(SyntheticGesture::Result result); |
| |
| // Called when there is a new auto resize (using a post to avoid a stack |
| // which may get in recursive loops). |
| void DelayedAutoResized(); |
| |
| void WindowSnapshotReachedScreen(int snapshot_id); |
| |
| // Send a message to the renderer process to change the accessibility mode. |
| void SetAccessibilityMode(AccessibilityMode AccessibilityMode); |
| |
| // Our delegate, which wants to know mainly about keyboard events. |
| // It will remain non-NULL until DetachDelegate() is called. |
| RenderWidgetHostDelegate* delegate_; |
| |
| // Created during construction but initialized during Init*(). Therefore, it |
| // is guaranteed never to be NULL, but its channel may be NULL if the |
| // renderer crashed, so you must always check that. |
| RenderProcessHost* process_; |
| |
| // The ID of the corresponding object in the Renderer Instance. |
| int routing_id_; |
| |
| // The ID of the surface corresponding to this render widget. |
| int surface_id_; |
| |
| // Indicates whether a page is loading or not. |
| bool is_loading_; |
| |
| // Indicates whether a page is hidden or not. |
| bool is_hidden_; |
| |
| // Indicates whether a page is fullscreen or not. |
| bool is_fullscreen_; |
| |
| // Set if we are waiting for a repaint ack for the view. |
| bool repaint_ack_pending_; |
| |
| // True when waiting for RESIZE_ACK. |
| bool resize_ack_pending_; |
| |
| // Cached copy of the screen info so that it doesn't need to be updated every |
| // time the window is resized. |
| scoped_ptr<blink::WebScreenInfo> screen_info_; |
| |
| // Set if screen_info_ may have changed and should be recomputed and force a |
| // resize message. |
| bool screen_info_out_of_date_; |
| |
| // The current size of the RenderWidget. |
| gfx::Size current_size_; |
| |
| // The size of the view's backing surface in non-DPI-adjusted pixels. |
| gfx::Size physical_backing_size_; |
| |
| // The height of the physical backing surface that is overdrawn opaquely in |
| // the browser, for example by an on-screen-keyboard (in DPI-adjusted pixels). |
| float overdraw_bottom_height_; |
| |
| // The size of the visible viewport, which may be smaller than the view if the |
| // view is partially occluded (e.g. by a virtual keyboard). The size is in |
| // DPI-adjusted pixels. |
| gfx::Size visible_viewport_size_; |
| |
| // The size we last sent as requested size to the renderer. |current_size_| |
| // is only updated once the resize message has been ack'd. This on the other |
| // hand is updated when the resize message is sent. This is very similar to |
| // |resize_ack_pending_|, but the latter is not set if the new size has width |
| // or height zero, which is why we need this too. |
| gfx::Size last_requested_size_; |
| |
| // The next auto resize to send. |
| gfx::Size new_auto_size_; |
| |
| // True if the render widget host should track the render widget's size as |
| // opposed to visa versa. |
| bool should_auto_resize_; |
| |
| bool waiting_for_screen_rects_ack_; |
| gfx::Rect last_view_screen_rect_; |
| gfx::Rect last_window_screen_rect_; |
| |
| AccessibilityMode accessibility_mode_; |
| |
| // Keyboard event listeners. |
| std::vector<KeyPressEventCallback> key_press_event_callbacks_; |
| |
| // Mouse event callbacks. |
| std::vector<MouseEventCallback> mouse_event_callbacks_; |
| |
| // If true, then we should repaint when restoring even if we have a |
| // backingstore. This flag is set to true if we receive a paint message |
| // while is_hidden_ to true. Even though we tell the render widget to hide |
| // itself, a paint message could already be in flight at that point. |
| bool needs_repainting_on_restore_; |
| |
| // This is true if the renderer is currently unresponsive. |
| bool is_unresponsive_; |
| |
| // The following value indicates a time in the future when we would consider |
| // the renderer hung if it does not generate an appropriate response message. |
| base::Time time_when_considered_hung_; |
| |
| // This value denotes the number of input events yet to be acknowledged |
| // by the renderer. |
| int in_flight_event_count_; |
| |
| // This timer runs to check if time_when_considered_hung_ has past. |
| base::OneShotTimer<RenderWidgetHostImpl> hung_renderer_timer_; |
| |
| // Flag to detect recursive calls to GetBackingStore(). |
| bool in_get_backing_store_; |
| |
| // Used for UMA histogram logging to measure the time for a repaint view |
| // operation to finish. |
| base::TimeTicks repaint_start_time_; |
| |
| // Set to true if we shouldn't send input events from the render widget. |
| bool ignore_input_events_; |
| |
| // Indicates whether IME is active. |
| bool input_method_active_; |
| |
| // Set when we update the text direction of the selected input element. |
| bool text_direction_updated_; |
| blink::WebTextDirection text_direction_; |
| |
| // Set when we cancel updating the text direction. |
| // This flag also ignores succeeding update requests until we call |
| // NotifyTextDirection(). |
| bool text_direction_canceled_; |
| |
| // Indicates if the next sequence of Char events should be suppressed or not. |
| // System may translate a RawKeyDown event into zero or more Char events, |
| // usually we send them to the renderer directly in sequence. However, If a |
| // RawKeyDown event was not handled by the renderer but was handled by |
| // our UnhandledKeyboardEvent() method, e.g. as an accelerator key, then we |
| // shall not send the following sequence of Char events, which was generated |
| // by this RawKeyDown event, to the renderer. Otherwise the renderer may |
| // handle the Char events and cause unexpected behavior. |
| // For example, pressing alt-2 may let the browser switch to the second tab, |
| // but the Char event generated by alt-2 may also activate a HTML element |
| // if its accesskey happens to be "2", then the user may get confused when |
| // switching back to the original tab, because the content may already be |
| // changed. |
| bool suppress_next_char_events_; |
| |
| // The last scroll offset of the render widget. |
| gfx::Vector2d last_scroll_offset_; |
| |
| bool pending_mouse_lock_request_; |
| bool allow_privileged_mouse_lock_; |
| |
| // Keeps track of whether the webpage has any touch event handler. If it does, |
| // then touch events are sent to the renderer. Otherwise, the touch events are |
| // not sent to the renderer. |
| bool has_touch_handler_; |
| |
| base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_; |
| |
| scoped_ptr<SyntheticGestureController> synthetic_gesture_controller_; |
| |
| scoped_ptr<TouchEmulator> touch_emulator_; |
| |
| // Receives and handles all input events. |
| scoped_ptr<InputRouter> input_router_; |
| |
| scoped_ptr<TimeoutMonitor> hang_monitor_timeout_; |
| |
| #if defined(OS_WIN) |
| std::list<HWND> dummy_windows_for_activation_; |
| #endif |
| |
| int64 last_input_number_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_ |