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_VIEW_HOST_H_
6 #define CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_
10 #include "base/callback_forward.h"
11 #include "content/common/content_export.h"
12 #include "content/public/browser/render_widget_host.h"
13 #include "content/public/common/file_chooser_params.h"
14 #include "content/public/common/page_zoom.h"
15 #include "third_party/WebKit/public/web/WebDragOperation.h"
18 struct WebPreferences;
30 class AudioOutputController;
34 struct SelectedFileInfo;
38 struct WebMediaPlayerAction;
39 struct WebPluginAction;
44 class ChildProcessSecurityPolicy;
45 class RenderFrameHost;
46 class RenderViewHostDelegate;
47 class SessionStorageNamespace;
51 // A RenderViewHost is responsible for creating and talking to a RenderView
52 // object in a child process. It exposes a high level API to users, for things
53 // like loading pages, adjusting the display and other browser functionality,
54 // which it translates into IPC messages sent over the IPC channel with the
55 // RenderView. It responds to all IPC messages sent by that RenderView and
56 // cracks them, calling a delegate object back with higher level types where
59 // The intent of this interface is to provide a view-agnostic communication
60 // conduit with a renderer. This is so we can build HTML views not only as
61 // WebContents (see WebContents for an example) but also as views, etc.
62 class CONTENT_EXPORT RenderViewHost : virtual public RenderWidgetHost {
64 // Returns the RenderViewHost given its ID and the ID of its render process.
65 // Returns NULL if the IDs do not correspond to a live RenderViewHost.
66 static RenderViewHost* FromID(int render_process_id, int render_view_id);
68 // Downcasts from a RenderWidgetHost to a RenderViewHost. Required
69 // because RenderWidgetHost is a virtual base class.
70 static RenderViewHost* From(RenderWidgetHost* rwh);
72 virtual ~RenderViewHost() {}
74 // Returns the main frame for this render view.
75 virtual RenderFrameHost* GetMainFrame() = 0;
77 // Tell the render view to enable a set of javascript bindings. The argument
78 // should be a combination of values from BindingsPolicy.
79 virtual void AllowBindings(int binding_flags) = 0;
81 // Tells the renderer to clear the focused node (if any).
82 virtual void ClearFocusedNode() = 0;
84 // Causes the renderer to close the current page, including running its
85 // onunload event handler. A ClosePage_ACK message will be sent to the
86 // ResourceDispatcherHost when it is finished.
87 virtual void ClosePage() = 0;
89 // Copies the image at location x, y to the clipboard (if there indeed is an
90 // image at that location).
91 virtual void CopyImageAt(int x, int y) = 0;
93 // Notifies the renderer about the result of a desktop notification.
94 virtual void DesktopNotificationPermissionRequestDone(
95 int callback_context) = 0;
96 virtual void DesktopNotificationPostDisplay(int callback_context) = 0;
97 virtual void DesktopNotificationPostError(int notification_id,
98 const base::string16& message) = 0;
99 virtual void DesktopNotificationPostClose(int notification_id,
101 virtual void DesktopNotificationPostClick(int notification_id) = 0;
103 // Notifies the listener that a directory enumeration is complete.
104 virtual void DirectoryEnumerationFinished(
106 const std::vector<base::FilePath>& files) = 0;
108 // Tells the renderer not to add scrollbars with height and width below a
110 virtual void DisableScrollbarsForThreshold(const gfx::Size& size) = 0;
112 // Notifies the renderer that a a drag operation that it started has ended,
113 // either in a drop or by being cancelled.
114 virtual void DragSourceEndedAt(
115 int client_x, int client_y, int screen_x, int screen_y,
116 blink::WebDragOperation operation) = 0;
118 // Notifies the renderer that a drag and drop operation is in progress, with
119 // droppable items positioned over the renderer's view.
120 virtual void DragSourceMovedTo(
121 int client_x, int client_y, int screen_x, int screen_y) = 0;
123 // Notifies the renderer that we're done with the drag and drop operation.
124 // This allows the renderer to reset some state.
125 virtual void DragSourceSystemDragEnded() = 0;
127 // D&d drop target messages that get sent to WebKit.
128 virtual void DragTargetDragEnter(
129 const DropData& drop_data,
130 const gfx::Point& client_pt,
131 const gfx::Point& screen_pt,
132 blink::WebDragOperationsMask operations_allowed,
133 int key_modifiers) = 0;
134 virtual void DragTargetDragOver(
135 const gfx::Point& client_pt,
136 const gfx::Point& screen_pt,
137 blink::WebDragOperationsMask operations_allowed,
138 int key_modifiers) = 0;
139 virtual void DragTargetDragLeave() = 0;
140 virtual void DragTargetDrop(const gfx::Point& client_pt,
141 const gfx::Point& screen_pt,
142 int key_modifiers) = 0;
144 // Instructs the RenderView to automatically resize and send back updates
146 virtual void EnableAutoResize(const gfx::Size& min_size,
147 const gfx::Size& max_size) = 0;
149 // Turns off auto-resize and gives a new size that the view should be.
150 virtual void DisableAutoResize(const gfx::Size& new_size) = 0;
152 // Instructs the RenderView to send back updates to the preferred size.
153 virtual void EnablePreferredSizeMode() = 0;
155 // Tells the renderer to perform the given action on the media player
156 // located at the given point.
157 virtual void ExecuteMediaPlayerActionAtLocation(
158 const gfx::Point& location,
159 const blink::WebMediaPlayerAction& action) = 0;
161 // Runs some javascript within the context of a frame in the page.
162 virtual void ExecuteJavascriptInWebFrame(const base::string16& frame_xpath,
163 const base::string16& jscript) = 0;
165 // Runs some javascript within the context of a frame in the page. The result
166 // is sent back via the provided callback.
167 typedef base::Callback<void(const base::Value*)> JavascriptResultCallback;
168 virtual void ExecuteJavascriptInWebFrameCallbackResult(
169 const base::string16& frame_xpath,
170 const base::string16& jscript,
171 const JavascriptResultCallback& callback) = 0;
173 // Tells the renderer to perform the given action on the plugin located at
175 virtual void ExecutePluginActionAtLocation(
176 const gfx::Point& location, const blink::WebPluginAction& action) = 0;
178 // Asks the renderer to exit fullscreen
179 virtual void ExitFullscreen() = 0;
181 // Causes the renderer to invoke the onbeforeunload event handler. The
182 // result will be returned via ViewMsg_ShouldClose. See also ClosePage and
183 // SwapOut, which fire the PageUnload event.
185 // Set bool for_cross_site_transition when this close is just for the current
186 // RenderView in the case of a cross-site transition. False means we're
187 // closing the entire tab.
188 virtual void FirePageBeforeUnload(bool for_cross_site_transition) = 0;
190 // Notifies the Listener that one or more files have been chosen by the user
191 // from a file chooser dialog for the form. |permissions| is the file
192 // selection mode in which the chooser dialog was created.
193 virtual void FilesSelectedInChooser(
194 const std::vector<ui::SelectedFileInfo>& files,
195 FileChooserParams::Mode permissions) = 0;
197 virtual RenderViewHostDelegate* GetDelegate() const = 0;
199 // Returns a bitwise OR of bindings types that have been enabled for this
200 // RenderView. See BindingsPolicy for details.
201 virtual int GetEnabledBindings() const = 0;
203 virtual SiteInstance* GetSiteInstance() const = 0;
205 // Requests the renderer to evaluate an xpath to a frame and insert css
206 // into that frame's document.
207 virtual void InsertCSS(const base::string16& frame_xpath,
208 const std::string& css) = 0;
210 // Returns true if the RenderView is active and has not crashed. Virtual
211 // because it is overridden by TestRenderViewHost.
212 virtual bool IsRenderViewLive() const = 0;
214 // Notification that a move or resize renderer's containing window has
216 virtual void NotifyMoveOrResizeStarted() = 0;
218 // Reloads the current focused frame.
219 virtual void ReloadFrame() = 0;
221 // Sets a property with the given name and value on the Web UI binding object.
222 // Must call AllowWebUIBindings() on this renderer first.
223 virtual void SetWebUIProperty(const std::string& name,
224 const std::string& value) = 0;
226 // Changes the zoom level for the current main frame.
227 virtual void Zoom(PageZoom zoom) = 0;
229 // Send the renderer process the current preferences supplied by the
230 // RenderViewHostDelegate.
231 virtual void SyncRendererPrefs() = 0;
233 virtual void ToggleSpeechInput() = 0;
235 // Returns the current WebKit preferences.
236 virtual WebPreferences GetWebkitPreferences() = 0;
238 // Passes a list of Webkit preferences to the renderer.
239 virtual void UpdateWebkitPreferences(const WebPreferences& prefs) = 0;
241 // Informs the renderer process of a change in timezone.
242 virtual void NotifyTimezoneChange() = 0;
244 // Retrieves the list of AudioOutputController objects associated
245 // with this object and passes it to the callback you specify, on
246 // the same thread on which you called the method.
247 typedef std::list<scoped_refptr<media::AudioOutputController> >
248 AudioOutputControllerList;
249 typedef base::Callback<void(const AudioOutputControllerList&)>
250 GetAudioOutputControllersCallback;
251 virtual void GetAudioOutputControllers(
252 const GetAudioOutputControllersCallback& callback) const = 0;
254 #if defined(OS_ANDROID)
255 // Selects and zooms to the find result nearest to the point (x,y)
256 // defined in find-in-page coordinates.
257 virtual void ActivateNearestFindResult(int request_id, float x, float y) = 0;
259 // Asks the renderer to send the rects of the current find matches.
260 virtual void RequestFindMatchRects(int current_version) = 0;
262 // Disables fullscreen media playback for encrypted video.
263 virtual void DisableFullscreenEncryptedMediaPlayback() = 0;
267 // This interface should only be implemented inside content.
268 friend class RenderViewHostImpl;
272 } // namespace content
274 #endif // CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_