1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_
6 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_
8 #include "base/basictypes.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/strings/string16.h"
11 #include "content/common/content_export.h"
12 #include "third_party/skia/include/core/SkBitmap.h"
13 #include "third_party/skia/include/core/SkRegion.h"
14 #include "third_party/WebKit/public/web/WebInputEvent.h"
15 #include "ui/gfx/native_widget_types.h"
25 class TextInputClient;
30 class RenderWidgetHost;
31 class RenderWidgetHostViewFrameSubscriber;
33 // RenderWidgetHostView is an interface implemented by an object that acts as
34 // the "View" portion of a RenderWidgetHost. The RenderWidgetHost and its
35 // associated RenderProcessHost own the "Model" in this case which is the
36 // child renderer process. The View is responsible for receiving events from
37 // the surrounding environment and passing them to the RenderWidgetHost, and
38 // for actually displaying the content of the RenderWidgetHost when it
41 // RenderWidgetHostView Class Hierarchy:
42 // RenderWidgetHostView - Public interface.
43 // RenderWidgetHostViewBase - Common implementation between platforms.
44 // RenderWidgetHostViewAura, ... - Platform specific implementations.
45 class CONTENT_EXPORT RenderWidgetHostView {
47 virtual ~RenderWidgetHostView() {}
49 // Initialize this object for use as a drawing area. |parent_view| may be
50 // left as NULL on platforms where a parent view is not required to initialize
52 virtual void InitAsChild(gfx::NativeView parent_view) = 0;
54 // Returns the associated RenderWidgetHost.
55 virtual RenderWidgetHost* GetRenderWidgetHost() const = 0;
57 // Tells the View to size itself to the specified size.
58 virtual void SetSize(const gfx::Size& size) = 0;
60 // Tells the View to size and move itself to the specified size and point in
62 virtual void SetBounds(const gfx::Rect& rect) = 0;
64 // Retrieves the native view used to contain plugins and identify the
65 // renderer in IPC messages.
66 virtual gfx::NativeView GetNativeView() const = 0;
67 virtual gfx::NativeViewId GetNativeViewId() const = 0;
68 virtual gfx::NativeViewAccessible GetNativeViewAccessible() = 0;
70 // Returns a ui::TextInputClient to support text input or NULL if this RWHV
71 // doesn't support text input.
72 // Note: Not all the platforms use ui::InputMethod and ui::TextInputClient for
73 // text input. Some platforms (Mac and Android for example) use their own
75 virtual ui::TextInputClient* GetTextInputClient() = 0;
77 // Set focus to the associated View component.
78 virtual void Focus() = 0;
79 // Returns true if the View currently has the focus.
80 virtual bool HasFocus() const = 0;
81 // Returns true is the current display surface is available.
82 virtual bool IsSurfaceAvailableForCopy() const = 0;
84 // Shows/hides the view. These must always be called together in pairs.
85 // It is not legal to call Hide() multiple times in a row.
86 virtual void Show() = 0;
87 virtual void Hide() = 0;
89 // Whether the view is showing.
90 virtual bool IsShowing() = 0;
92 // Retrieve the bounds of the View, in screen coordinates.
93 virtual gfx::Rect GetViewBounds() const = 0;
95 // Returns true if the View's context menu is showing.
96 virtual bool IsShowingContextMenu() const = 0;
98 // Tells the View whether the context menu is showing.
99 virtual void SetShowingContextMenu(bool showing) = 0;
101 // Returns the currently selected text.
102 virtual base::string16 GetSelectedText() const = 0;
104 // Subclasses should override this method to do what is appropriate to set
105 // the custom background for their platform.
106 virtual void SetBackground(const SkBitmap& background) = 0;
107 virtual const SkBitmap& GetBackground() = 0;
109 // Return value indicates whether the mouse is locked successfully or not.
110 virtual bool LockMouse() = 0;
111 virtual void UnlockMouse() = 0;
112 // Returns true if the mouse pointer is currently locked.
113 virtual bool IsMouseLocked() = 0;
115 // Retrives the size of the viewport for the visible region. May be smaller
116 // than the view size if a portion of the view is obstructed (e.g. by a
117 // virtual keyboard).
118 virtual gfx::Size GetVisibleViewportSize() const = 0;
120 // Set insets for the visible region of the root window. Used to compute the
122 virtual void SetInsets(const gfx::Insets& insets) = 0;
124 // Begin subscribing for presentation events and captured frames.
125 // |subscriber| is now owned by this object, it will be called only on the
127 virtual void BeginFrameSubscription(
128 scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) = 0;
130 // End subscribing for frame presentation events. FrameSubscriber will be
131 // deleted after this call.
132 virtual void EndFrameSubscription() = 0;
134 #if defined(OS_MACOSX)
135 // Set the view's active state (i.e., tint state of controls).
136 virtual void SetActive(bool active) = 0;
138 // Tells the view whether or not to accept first responder status. If |flag|
139 // is true, the view does not accept first responder status and instead
140 // manually becomes first responder when it receives a mouse down event. If
141 // |flag| is false, the view participates in the key-view chain as normal.
142 virtual void SetTakesFocusOnlyOnMouseDown(bool flag) = 0;
144 // Notifies the view that its enclosing window has changed visibility
145 // (minimized/unminimized, app hidden/unhidden, etc).
146 // TODO(stuartmorgan): This is a temporary plugin-specific workaround for
147 // <http://crbug.com/34266>. Once that is fixed, this (and the corresponding
148 // message and renderer-side handling) can be removed in favor of using
149 // WasHidden/WasShown.
150 virtual void SetWindowVisibility(bool visible) = 0;
152 // Informs the view that its containing window's frame changed.
153 virtual void WindowFrameChanged() = 0;
155 // Brings up the dictionary showing a definition for the selected text.
156 virtual void ShowDefinitionForSelection() = 0;
158 // Returns |true| if Mac OS X text to speech is supported.
159 virtual bool SupportsSpeech() const = 0;
160 // Tells the view to speak the currently selected text.
161 virtual void SpeakSelection() = 0;
162 // Returns |true| if text is currently being spoken by Mac OS X.
163 virtual bool IsSpeaking() const = 0;
164 // Stops speaking, if it is currently in progress.
165 virtual void StopSpeaking() = 0;
166 #endif // defined(OS_MACOSX)
169 } // namespace content
171 #endif // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_