ui/views/controls/webview/web_dialog_view.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 UI_VIEWS_CONTROLS_WEBVIEW_WEB_DIALOG_VIEW_H_
   6 #define UI_VIEWS_CONTROLS_WEBVIEW_WEB_DIALOG_VIEW_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/gtest_prod_util.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "ui/gfx/size.h"
  14 #include "ui/views/controls/webview/webview_export.h"
  15 #include "ui/views/widget/widget_delegate.h"
  16 #include "ui/views/window/client_view.h"
  17 #include "ui/web_dialogs/web_dialog_delegate.h"
  18 #include "ui/web_dialogs/web_dialog_web_contents_delegate.h"
  19
  20 namespace content {
  21 class BrowserContext;
  22 }
  23
  24 namespace views {
  25 class WebView;
  26
  27 ////////////////////////////////////////////////////////////////////////////////
  28 //
  29 // WebDialogView is a view used to display an web dialog to the user. The
  30 // content of the dialogs is determined by the delegate
  31 // (ui::WebDialogDelegate), but is basically a file URL along with a
  32 // JSON input string. The HTML is supposed to show a UI to the user and is
  33 // expected to send back a JSON file as a return value.
  34 //
  35 ////////////////////////////////////////////////////////////////////////////////
  36 //
  37 // TODO(akalin): Make WebDialogView contain an WebDialogWebContentsDelegate
  38 // instead of inheriting from it to avoid violating the "no multiple
  39 // inheritance" rule.
  40 class WEBVIEW_EXPORT WebDialogView : public views::ClientView,
  41                                      public ui::WebDialogWebContentsDelegate,
  42                                      public ui::WebDialogDelegate,
  43                                      public views::WidgetDelegate {
  44  public:
  45   // |handler| must not be NULL and this class takes the ownership.
  46   WebDialogView(content::BrowserContext* context,
  47                 ui::WebDialogDelegate* delegate,
  48                 WebContentsHandler* handler);
  49   virtual ~WebDialogView();
  50
  51   // For testing.
  52   content::WebContents* web_contents();
  53
  54   // Overridden from views::ClientView:
  55   virtual gfx::Size GetPreferredSize() const OVERRIDE;
  56   virtual gfx::Size GetMinimumSize() const OVERRIDE;
  57   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator)
  58       OVERRIDE;
  59   virtual void ViewHierarchyChanged(
  60       const ViewHierarchyChangedDetails& details) OVERRIDE;
  61   virtual bool CanClose() OVERRIDE;
  62
  63   // Overridden from views::WidgetDelegate:
  64   virtual bool CanResize() const OVERRIDE;
  65   virtual ui::ModalType GetModalType() const OVERRIDE;
  66   virtual base::string16 GetWindowTitle() const OVERRIDE;
  67   virtual std::string GetWindowName() const OVERRIDE;
  68   virtual void WindowClosing() OVERRIDE;
  69   virtual views::View* GetContentsView() OVERRIDE;
  70   virtual ClientView* CreateClientView(views::Widget* widget) OVERRIDE;
  71   virtual views::View* GetInitiallyFocusedView() OVERRIDE;
  72   virtual bool ShouldShowWindowTitle() const OVERRIDE;
  73   virtual views::Widget* GetWidget() OVERRIDE;
  74   virtual const views::Widget* GetWidget() const OVERRIDE;
  75
  76   // Overridden from ui::WebDialogDelegate:
  77   virtual ui::ModalType GetDialogModalType() const OVERRIDE;
  78   virtual base::string16 GetDialogTitle() const OVERRIDE;
  79   virtual GURL GetDialogContentURL() const OVERRIDE;
  80   virtual void GetWebUIMessageHandlers(
  81       std::vector<content::WebUIMessageHandler*>* handlers) const OVERRIDE;
  82   virtual void GetDialogSize(gfx::Size* size) const OVERRIDE;
  83   virtual void GetMinimumDialogSize(gfx::Size* size) const OVERRIDE;
  84   virtual std::string GetDialogArgs() const OVERRIDE;
  85   virtual void OnDialogShown(
  86       content::WebUI* webui,
  87       content::RenderViewHost* render_view_host) OVERRIDE;
  88   virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE;
  89   virtual void OnDialogCloseFromWebUI(
  90       const std::string& json_retval) OVERRIDE;
  91   virtual void OnCloseContents(content::WebContents* source,
  92                                bool* out_close_dialog) OVERRIDE;
  93   virtual bool ShouldShowDialogTitle() const OVERRIDE;
  94   virtual bool HandleContextMenu(
  95       const content::ContextMenuParams& params) OVERRIDE;
  96
  97   // Overridden from content::WebContentsDelegate:
  98   virtual void MoveContents(content::WebContents* source,
  99                             const gfx::Rect& pos) OVERRIDE;
 100   virtual void HandleKeyboardEvent(
 101       content::WebContents* source,
 102       const content::NativeWebKeyboardEvent& event) OVERRIDE;
 103   virtual void CloseContents(content::WebContents* source) OVERRIDE;
 104   virtual content::WebContents* OpenURLFromTab(
 105       content::WebContents* source,
 106       const content::OpenURLParams& params) OVERRIDE;
 107   virtual void AddNewContents(content::WebContents* source,
 108                               content::WebContents* new_contents,
 109                               WindowOpenDisposition disposition,
 110                               const gfx::Rect& initial_pos,
 111                               bool user_gesture,
 112                               bool* was_blocked) OVERRIDE;
 113   virtual void LoadingStateChanged(content::WebContents* source,
 114                                    bool to_different_document) OVERRIDE;
 115   virtual void BeforeUnloadFired(content::WebContents* tab,
 116                                  bool proceed,
 117                                  bool* proceed_to_fire_unload) OVERRIDE;
 118
 119  private:
 120   FRIEND_TEST_ALL_PREFIXES(WebDialogBrowserTest, WebContentRendered);
 121
 122   // Initializes the contents of the dialog.
 123   void InitDialog();
 124
 125   // This view is a delegate to the HTML content since it needs to get notified
 126   // about when the dialog is closing. For all other actions (besides dialog
 127   // closing) we delegate to the creator of this view, which we keep track of
 128   // using this variable.
 129   ui::WebDialogDelegate* delegate_;
 130
 131   views::WebView* web_view_;
 132
 133   // Whether user is attempting to close the dialog and we are processing
 134   // beforeunload event.
 135   bool is_attempting_close_dialog_;
 136
 137   // Whether beforeunload event has been fired and we have finished processing
 138   // beforeunload event.
 139   bool before_unload_fired_;
 140
 141   // Whether the dialog is closed from WebUI in response to a "dialogClose"
 142   // message.
 143   bool closed_via_webui_;
 144
 145   // A json string returned to WebUI from a "dialogClose" message.
 146   std::string dialog_close_retval_;
 147
 148   // Whether CloseContents() has been called.
 149   bool close_contents_called_;
 150
 151   DISALLOW_COPY_AND_ASSIGN(WebDialogView);
 152 };
 153
 154 }  // namespace views
 155
 156 #endif  // UI_VIEWS_CONTROLS_WEBVIEW_WEB_DIALOG_VIEW_H_