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   ~PanelHost() override;
  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   content::WebContents* OpenURLFromTab(
  52       content::WebContents* source,
  53       const content::OpenURLParams& params) override;
  54   void NavigationStateChanged(content::WebContents* source,
  55                               content::InvalidateTypes changed_flags) override;
  56   void AddNewContents(content::WebContents* source,
  57                       content::WebContents* new_contents,
  58                       WindowOpenDisposition disposition,
  59                       const gfx::Rect& initial_rect,
  60                       bool user_gesture,
  61                       bool* was_blocked) override;
  62   void ActivateContents(content::WebContents* contents) override;
  63   void DeactivateContents(content::WebContents* contents) override;
  64   void LoadingStateChanged(content::WebContents* source,
  65                            bool to_different_document) override;
  66   void CloseContents(content::WebContents* source) override;
  67   void MoveContents(content::WebContents* source,
  68                     const gfx::Rect& pos) override;
  69   bool IsPopupOrPanel(const content::WebContents* source) const override;
  70   void ContentsZoomChange(bool zoom_in) override;
  71   void HandleKeyboardEvent(
  72       content::WebContents* source,
  73       const content::NativeWebKeyboardEvent& event) override;
  74   void WebContentsFocused(content::WebContents* contents) override;
  75   void ResizeDueToAutoResize(content::WebContents* web_contents,
  76                              const gfx::Size& new_size) override;
  77
  78   // content::WebContentsObserver overrides.
  79   void RenderViewCreated(content::RenderViewHost* render_view_host) override;
  80   void RenderProcessGone(base::TerminationStatus status) override;
  81   void WebContentsDestroyed() override;
  82   bool OnMessageReceived(const IPC::Message& message) override;
  83
  84   // extensions::ExtensionFunctionDispatcher::Delegate overrides.
  85   extensions::WindowController* GetExtensionWindowController() const override;
  86   content::WebContents* GetAssociatedWebContents() const override;
  87
  88   // Actions on web contents.
  89   void Reload();
  90   void ReloadIgnoringCache();
  91   void StopLoading();
  92   void Zoom(content::PageZoom zoom);
  93
  94  private:
  95   // Helper to close panel via the message loop.
  96   void ClosePanel();
  97
  98   // Message handlers.
  99   void OnRequest(const ExtensionHostMsg_Request_Params& params);
 100
 101   Panel* panel_;  // Weak, owns us.
 102   Profile* profile_;
 103   extensions::ExtensionFunctionDispatcher extension_function_dispatcher_;
 104
 105   scoped_ptr<content::WebContents> web_contents_;
 106
 107   // The following factory is used to close the panel via the message loop.
 108   base::WeakPtrFactory<PanelHost> weak_factory_;
 109
 110   DISALLOW_COPY_AND_ASSIGN(PanelHost);
 111 };
 112
 113 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_HOST_H_