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