src/chrome/browser/ui/panels/panel_host.h

   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.
   4
   5 #ifndef CHROME_BROWSER_UI_PANELS_PANEL_HOST_H_
   6 #define CHROME_BROWSER_UI_PANELS_PANEL_HOST_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "content/public/browser/web_contents_delegate.h"
  11 #include "content/public/browser/web_contents_observer.h"
  12 #include "content/public/common/page_zoom.h"
  13 #include "extensions/browser/extension_function_dispatcher.h"
  14
  15 class FaviconTabHelper;
  16 class GURL;
  17 class Panel;
  18 class PrefsTabHelper;
  19 class Profile;
  20
  21 namespace content {
  22 class WebContents;
  23 }
  24
  25 namespace extensions {
  26 class WindowController;
  27 }
  28
  29 namespace gfx {
  30 class Image;
  31 class Rect;
  32 }
  33
  34 // Helper class for Panel, implementing WebContents hosting and Extension
  35 // delegates. Owned and used by Panel only.
  36 class PanelHost : public content::WebContentsDelegate,
  37                   public content::WebContentsObserver,
  38                   public extensions::ExtensionFunctionDispatcher::Delegate {
  39  public:
  40   PanelHost(Panel* panel, Profile* profile);
  41   virtual ~PanelHost();
  42
  43   void Init(const GURL& url);
  44   content::WebContents* web_contents() { return web_contents_.get(); }
  45   void DestroyWebContents();
  46
  47   // Returns the icon for the current page.
  48   gfx::Image GetPageIcon() const;
  49
  50   // content::WebContentsDelegate overrides.
  51   virtual content::WebContents* OpenURLFromTab(
  52       content::WebContents* source,
  53       const content::OpenURLParams& params) OVERRIDE;
  54   virtual void NavigationStateChanged(const content::WebContents* source,
  55                                       unsigned changed_flags) OVERRIDE;
  56   virtual void AddNewContents(content::WebContents* source,
  57                               content::WebContents* new_contents,
  58                               WindowOpenDisposition disposition,
  59                               const gfx::Rect& initial_pos,
  60                               bool user_gesture,
  61                               bool* was_blocked) OVERRIDE;
  62   virtual void ActivateContents(content::WebContents* contents) OVERRIDE;
  63   virtual void DeactivateContents(content::WebContents* contents) OVERRIDE;
  64   virtual void LoadingStateChanged(content::WebContents* source,
  65                                    bool to_different_document) OVERRIDE;
  66   virtual void CloseContents(content::WebContents* source) OVERRIDE;
  67   virtual void MoveContents(content::WebContents* source,
  68                             const gfx::Rect& pos) OVERRIDE;
  69   virtual bool IsPopupOrPanel(
  70       const content::WebContents* source) const OVERRIDE;
  71   virtual void ContentsZoomChange(bool zoom_in) OVERRIDE;
  72   virtual void HandleKeyboardEvent(
  73       content::WebContents* source,
  74       const content::NativeWebKeyboardEvent& event) OVERRIDE;
  75   virtual void WebContentsFocused(content::WebContents* contents) OVERRIDE;
  76   virtual void ResizeDueToAutoResize(content::WebContents* web_contents,
  77                                      const gfx::Size& new_size) OVERRIDE;
  78
  79   // content::WebContentsObserver overrides.
  80   virtual void RenderViewCreated(
  81       content::RenderViewHost* render_view_host) OVERRIDE;
  82   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
  83   virtual void WebContentsDestroyed() OVERRIDE;
  84   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  85
  86   // extensions::ExtensionFunctionDispatcher::Delegate overrides.
  87   virtual extensions::WindowController* GetExtensionWindowController() const
  88       OVERRIDE;
  89   virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
  90
  91   // Actions on web contents.
  92   void Reload();
  93   void ReloadIgnoringCache();
  94   void StopLoading();
  95   void Zoom(content::PageZoom zoom);
  96
  97  private:
  98   // Helper to close panel via the message loop.
  99   void ClosePanel();
 100
 101   // Message handlers.
 102   void OnRequest(const ExtensionHostMsg_Request_Params& params);
 103
 104   Panel* panel_;  // Weak, owns us.
 105   Profile* profile_;
 106   extensions::ExtensionFunctionDispatcher extension_function_dispatcher_;
 107
 108   scoped_ptr<content::WebContents> web_contents_;
 109
 110   // The following factory is used to close the panel via the message loop.
 111   base::WeakPtrFactory<PanelHost> weak_factory_;
 112
 113   DISALLOW_COPY_AND_ASSIGN(PanelHost);
 114 };
 115
 116 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_HOST_H_