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_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
6 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
10 #include "base/basictypes.h"
11 #include "base/callback.h"
12 #include "base/process/kill.h"
13 #include "base/strings/string16.h"
14 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
15 #include "content/common/content_export.h"
16 #include "net/base/load_states.h"
17 #include "third_party/WebKit/public/web/WebPopupType.h"
18 #include "ui/base/window_open_disposition.h"
22 struct ViewHostMsg_CreateWindow_Params;
23 struct FrameHostMsg_DidCommitProvisionalLoad_Params;
24 struct ViewMsg_PostMessage_Params;
44 class CrossSiteTransferringRequest;
48 class RenderViewHostDelegateView;
49 class SessionStorageNamespace;
52 class WebContentsImpl;
53 struct FileChooserParams;
54 struct GlobalRequestID;
55 struct NativeWebKeyboardEvent;
57 struct RendererPreferences;
58 struct WebPreferences;
61 // RenderViewHostDelegate
63 // An interface implemented by an object interested in knowing about the state
64 // of the RenderViewHost.
66 // This interface currently encompasses every type of message that was
67 // previously being sent by WebContents itself. Some of these notifications
68 // may not be relevant to all users of RenderViewHost and we should consider
69 // exposing a more generic Send function on RenderViewHost and a response
70 // listener here to serve that need.
71 class CONTENT_EXPORT RenderViewHostDelegate {
73 // Returns the current delegate associated with a feature. May return NULL if
74 // there is no corresponding delegate.
75 virtual RenderViewHostDelegateView* GetDelegateView();
77 // This is used to give the delegate a chance to filter IPC messages.
78 virtual bool OnMessageReceived(RenderViewHost* render_view_host,
79 const IPC::Message& message);
81 // Return this object cast to a WebContents, if it is one. If the object is
82 // not a WebContents, returns NULL. DEPRECATED: Be sure to include brettw or
83 // jam as reviewers before you use this method. http://crbug.com/82582
84 virtual WebContents* GetAsWebContents();
86 // Return the rect where to display the resize corner, if any, otherwise
88 virtual gfx::Rect GetRootWindowResizerRect() const = 0;
90 // The RenderView is being constructed (message sent to the renderer process
91 // to construct a RenderView). Now is a good time to send other setup events
92 // to the RenderView. This precedes any other commands to the RenderView.
93 virtual void RenderViewCreated(RenderViewHost* render_view_host) {}
95 // The RenderView has been constructed.
96 virtual void RenderViewReady(RenderViewHost* render_view_host) {}
98 // The RenderView died somehow (crashed or was killed by the user).
99 virtual void RenderViewTerminated(RenderViewHost* render_view_host,
100 base::TerminationStatus status,
103 // The RenderView is going to be deleted. This is called when each
104 // RenderView is going to be destroyed
105 virtual void RenderViewDeleted(RenderViewHost* render_view_host) {}
107 // The state for the page changed and should be updated.
108 virtual void UpdateState(RenderViewHost* render_view_host,
110 const PageState& state) {}
112 // The destination URL has changed should be updated.
113 virtual void UpdateTargetURL(const GURL& url) {}
115 // The page is trying to close the RenderView's representation in the client.
116 virtual void Close(RenderViewHost* render_view_host) {}
118 // The page is trying to move the RenderView's representation in the client.
119 virtual void RequestMove(const gfx::Rect& new_bounds) {}
121 // The pending page load was canceled.
122 virtual void DidCancelLoading() {}
124 // The RenderView's main frame document element is ready. This happens when
125 // the document has finished parsing.
126 virtual void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) {}
128 // The page wants to close the active view in this tab.
129 virtual void RouteCloseEvent(RenderViewHost* rvh) {}
131 // The page wants to post a message to the active view in this tab.
132 virtual void RouteMessageEvent(
134 const ViewMsg_PostMessage_Params& params) {}
136 // Return a dummy RendererPreferences object that will be used by the renderer
137 // associated with the owning RenderViewHost.
138 virtual RendererPreferences GetRendererPrefs(
139 BrowserContext* browser_context) const = 0;
141 // Computes a WebPreferences object that will be used by the renderer
142 // associated with the owning render view host.
143 virtual WebPreferences ComputeWebkitPrefs();
145 // Notification the user has made a gesture while focus was on the
146 // page. This is used to avoid uninitiated user downloads (aka carpet
147 // bombing), see DownloadRequestLimiter for details.
148 virtual void OnUserGesture() {}
150 // Notification from the renderer host that blocked UI event occurred.
151 // This happens when there are tab-modal dialogs. In this case, the
152 // notification is needed to let us draw attention to the dialog (i.e.
153 // refocus on the modal dialog, flash title etc).
154 virtual void OnIgnoredUIEvent() {}
156 // Notification that the renderer has become unresponsive. The
157 // delegate can use this notification to show a warning to the user.
158 virtual void RendererUnresponsive(RenderViewHost* render_view_host,
159 bool is_during_before_unload,
160 bool is_during_unload) {}
162 // Notification that a previously unresponsive renderer has become
163 // responsive again. The delegate can use this notification to end the
164 // warning shown to the user.
165 virtual void RendererResponsive(RenderViewHost* render_view_host) {}
167 // Notification that the RenderViewHost's load state changed.
168 virtual void LoadStateChanged(const GURL& url,
169 const net::LoadStateWithParam& load_state,
170 uint64 upload_position,
171 uint64 upload_size) {}
173 // The page wants the hosting window to activate/deactivate itself (it
174 // called the JavaScript window.focus()/blur() method).
175 virtual void Activate() {}
176 virtual void Deactivate() {}
178 // Notification that the view has lost capture.
179 virtual void LostCapture() {}
181 // Notifications about mouse events in this view. This is useful for
182 // implementing global 'on hover' features external to the view.
183 virtual void HandleMouseMove() {}
184 virtual void HandleMouseDown() {}
185 virtual void HandleMouseLeave() {}
186 virtual void HandleMouseUp() {}
187 virtual void HandlePointerActivate() {}
188 virtual void HandleGestureBegin() {}
189 virtual void HandleGestureEnd() {}
191 // Called when a file selection is to be done.
192 virtual void RunFileChooser(
193 RenderViewHost* render_view_host,
194 const FileChooserParams& params) {}
196 // Notification that the page wants to go into or out of fullscreen mode.
197 virtual void ToggleFullscreenMode(bool enter_fullscreen) {}
198 virtual bool IsFullscreenForCurrentTab() const;
200 // The contents' preferred size changed.
201 virtual void UpdatePreferredSize(const gfx::Size& pref_size) {}
203 // The contents auto-resized and the container should match it.
204 virtual void ResizeDueToAutoResize(const gfx::Size& new_size) {}
206 // Requests to lock the mouse. Once the request is approved or rejected,
207 // GotResponseToLockMouseRequest() will be called on the requesting render
209 virtual void RequestToLockMouse(bool user_gesture,
210 bool last_unlocked_by_target) {}
212 // Notification that the view has lost the mouse lock.
213 virtual void LostMouseLock() {}
215 // The page is trying to open a new page (e.g. a popup window). The window
216 // should be created associated with the given |route_id| in process
217 // |render_process_id|, but it should not be shown yet. That should happen in
218 // response to ShowCreatedWindow.
219 // |params.window_container_type| describes the type of RenderViewHost
220 // container that is requested -- in particular, the window.open call may
221 // have specified 'background' and 'persistent' in the feature string.
223 // The passed |params.frame_name| parameter is the name parameter that was
224 // passed to window.open(), and will be empty if none was passed.
226 // Note: this is not called "CreateWindow" because that will clash with
227 // the Windows function which is actually a #define.
228 virtual void CreateNewWindow(
229 int render_process_id,
231 int main_frame_route_id,
232 const ViewHostMsg_CreateWindow_Params& params,
233 SessionStorageNamespace* session_storage_namespace) {}
235 // The page is trying to open a new widget (e.g. a select popup). The
236 // widget should be created associated with the given |route_id| in the
237 // process |render_process_id|, but it should not be shown yet. That should
238 // happen in response to ShowCreatedWidget.
239 // |popup_type| indicates if the widget is a popup and what kind of popup it
240 // is (select, autofill...).
241 virtual void CreateNewWidget(int render_process_id,
243 blink::WebPopupType popup_type) {}
245 // Creates a full screen RenderWidget. Similar to above.
246 virtual void CreateNewFullscreenWidget(int render_process_id, int route_id) {}
248 // Show a previously created page with the specified disposition and bounds.
249 // The window is identified by the route_id passed to CreateNewWindow.
251 // Note: this is not called "ShowWindow" because that will clash with
252 // the Windows function which is actually a #define.
253 virtual void ShowCreatedWindow(int route_id,
254 WindowOpenDisposition disposition,
255 const gfx::Rect& initial_pos,
256 bool user_gesture) {}
258 // Show the newly created widget with the specified bounds.
259 // The widget is identified by the route_id passed to CreateNewWidget.
260 virtual void ShowCreatedWidget(int route_id,
261 const gfx::Rect& initial_pos) {}
263 // Show the newly created full screen widget. Similar to above.
264 virtual void ShowCreatedFullscreenWidget(int route_id) {}
266 // Returns the SessionStorageNamespace the render view should use. Might
267 // create the SessionStorageNamespace on the fly.
268 virtual SessionStorageNamespace* GetSessionStorageNamespace(
269 SiteInstance* instance);
271 // Returns a copy of the map of all session storage namespaces related
273 virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap();
275 // Returns true if the RenderViewHost will never be visible.
276 virtual bool IsNeverVisible();
278 // Returns the FrameTree the render view should use. Guaranteed to be constant
279 // for the lifetime of the render view.
281 // TODO(ajwong): Remove once the main frame RenderFrameHost is no longer
282 // created by the RenderViewHost.
283 virtual FrameTree* GetFrameTree();
285 // Optional state storage for if the Virtual Keyboard has been requested by
286 // this page or not. If it has, this can be used to suppress things like the
287 // link disambiguation dialog, which doesn't interact well with the virtual
289 virtual void SetIsVirtualKeyboardRequested(bool requested) {}
290 virtual bool IsVirtualKeyboardRequested();
293 virtual ~RenderViewHostDelegate() {}
296 } // namespace content
298 #endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_