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 UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
6 #define UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
8 #include "base/basictypes.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "content/public/browser/web_contents_delegate.h"
11 #include "content/public/browser/web_contents_observer.h"
12 #include "ui/views/accessibility/native_view_accessibility.h"
13 #include "ui/views/controls/webview/webview_export.h"
14 #include "ui/views/view.h"
20 class WEBVIEW_EXPORT WebView : public View,
21 public content::WebContentsDelegate,
22 public content::WebContentsObserver {
24 static const char kViewClassName[];
26 explicit WebView(content::BrowserContext* browser_context);
29 // This creates a WebContents if none is yet associated with this WebView. The
30 // WebView owns this implicitly created WebContents.
31 content::WebContents* GetWebContents();
33 // WebView does not assume ownership of WebContents set via this method, only
34 // those it implicitly creates via GetWebContents() above.
35 void SetWebContents(content::WebContents* web_contents);
37 // If |mode| is true, WebView will register itself with WebContents as a
38 // WebContentsObserver, monitor for the showing/destruction of fullscreen
39 // render widgets, and alter its child view hierarchy to embed the fullscreen
40 // widget or restore the normal WebContentsView.
41 void SetEmbedFullscreenWidgetMode(bool mode);
43 content::WebContents* web_contents() const {
44 return content::WebContentsObserver::web_contents();
47 content::BrowserContext* browser_context() { return browser_context_; }
49 // Loads the initial URL to display in the attached WebContents. Creates the
50 // WebContents if none is attached yet. Note that this is intended as a
51 // convenience for loading the initial URL, and so URLs are navigated with
52 // PAGE_TRANSITION_AUTO_TOPLEVEL, so this is not intended as a general purpose
53 // navigation method - use WebContents' API directly.
54 void LoadInitialURL(const GURL& url);
56 // Controls how the attached WebContents is resized.
57 // false = WebContents' views' bounds are updated continuously as the
58 // WebView's bounds change (default).
59 // true = WebContents' views' position is updated continuously but its size
60 // is not (which may result in some clipping or under-painting) until
61 // a continuous size operation completes. This allows for smoother
62 // resizing performance during interactive resizes and animations.
63 void SetFastResize(bool fast_resize);
65 // Called when the WebContents is focused.
66 // TODO(beng): This view should become a WebContentsViewObserver when a
67 // WebContents is attached, and not rely on the delegate to
68 // forward this notification.
69 void OnWebContentsFocused(content::WebContents* web_contents);
71 // When used to host UI, we need to explicitly allow accelerators to be
72 // processed. Default is false.
73 void set_allow_accelerators(bool allow_accelerators) {
74 allow_accelerators_ = allow_accelerators;
77 // Sets the preferred size. If empty, View's implementation of
78 // GetPreferredSize() is used.
79 void SetPreferredSize(const gfx::Size& preferred_size);
81 // Overridden from View:
82 virtual const char* GetClassName() const OVERRIDE;
85 // Overridden from View:
86 virtual void OnBoundsChanged(const gfx::Rect& previous_bounds) OVERRIDE;
87 virtual void ViewHierarchyChanged(
88 const ViewHierarchyChangedDetails& details) OVERRIDE;
89 virtual bool SkipDefaultKeyEventProcessing(
90 const ui::KeyEvent& event) OVERRIDE;
91 virtual bool IsFocusable() const OVERRIDE;
92 virtual void OnFocus() OVERRIDE;
93 virtual void AboutToRequestFocusFromTabTraversal(bool reverse) OVERRIDE;
94 virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
95 virtual gfx::NativeViewAccessible GetNativeViewAccessible() OVERRIDE;
96 virtual gfx::Size GetPreferredSize() OVERRIDE;
98 // Overridden from content::WebContentsDelegate:
99 virtual void WebContentsFocused(content::WebContents* web_contents) OVERRIDE;
100 virtual bool EmbedsFullscreenWidget() const OVERRIDE;
102 // Overridden from content::WebContentsObserver:
103 virtual void RenderViewHostChanged(
104 content::RenderViewHost* old_host,
105 content::RenderViewHost* new_host) OVERRIDE;
106 virtual void WebContentsDestroyed(
107 content::WebContents* web_contents) OVERRIDE;
108 virtual void DidShowFullscreenWidget(int routing_id) OVERRIDE;
109 virtual void DidDestroyFullscreenWidget(int routing_id) OVERRIDE;
110 // Workaround for MSVC++ linker bug/feature that requires
111 // instantiation of the inline IPC::Listener methods in all translation units.
112 virtual void OnChannelConnected(int32 peer_id) OVERRIDE {}
113 virtual void OnChannelError() OVERRIDE {}
115 void AttachWebContents();
116 void DetachWebContents();
117 void ReattachForFullscreenChange(bool enter_fullscreen);
119 // Create a regular or test web contents (based on whether we're running
120 // in a unit test or not).
121 content::WebContents* CreateWebContents(
122 content::BrowserContext* browser_context);
124 NativeViewHost* wcv_holder_;
125 // Non-NULL if |web_contents()| was created and is owned by this WebView.
126 scoped_ptr<content::WebContents> wc_owner_;
127 // When true, WebView auto-embeds fullscreen widgets as a child view.
128 bool embed_fullscreen_widget_mode_enabled_;
129 // Set to true while WebView is embedding a fullscreen widget view as a child
130 // view instead of the normal WebContentsView render view.
131 bool is_embedding_fullscreen_widget_;
132 content::BrowserContext* browser_context_;
133 bool allow_accelerators_;
134 gfx::Size preferred_size_;
136 DISALLOW_COPY_AND_ASSIGN(WebView);
141 #endif // UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_