Handle Escape key on constrained window.

chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/constrained_web_dialog_delegate_base.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/views/constrained_window_views.h"
+#include "chrome/browser/ui/views/unhandled_keyboard_event_handler.h"
+#include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/gfx/size.h"
 #include "ui/views/controls/webview/webview.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 #include "ui/web_dialogs/web_dialog_ui.h"
 
 using content::WebContents;
 using ui::ConstrainedWebDialogDelegate;
 using ui::ConstrainedWebDialogUI;
 using ui::WebDialogDelegate;
 
 namespace {
 
 class ConstrainedWebDialogDelegateViews
     : public ConstrainedWebDialogDelegateBase {
  public:
   ConstrainedWebDialogDelegateViews(
       Profile* profile,
       WebDialogDelegate* delegate,
-      WebDialogWebContentsDelegate* tab_delegate)
-      : ConstrainedWebDialogDelegateBase(profile, delegate, tab_delegate) {
+      WebDialogWebContentsDelegate* tab_delegate,
+      views::WebView* view)
+      : ConstrainedWebDialogDelegateBase(profile, delegate, tab_delegate),
+        view_(view) {
     WebContents* web_contents = tab()->web_contents();
     if (tab_delegate) {
       set_override_tab_delegate(tab_delegate);
       web_contents->SetDelegate(tab_delegate);
     } else {
       web_contents->SetDelegate(this);
     }
   }
 
   virtual ~ConstrainedWebDialogDelegateViews() {}
 
   // WebDialogWebContentsDelegate interface.
   virtual void CloseContents(WebContents* source) OVERRIDE {
     window()->CloseConstrainedWindow();
   }
 
+  // contents::WebContentsDelegate
+  virtual void HandleKeyboardEvent(
+      const content::NativeWebKeyboardEvent& event) OVERRIDE {
+    unhandled_keyboard_event_handler_.HandleKeyboardEvent(
+        event, view_->GetFocusManager());
+  }
+
  private:
+  // Converts keyboard events on the WebContents to accelerators.
+  UnhandledKeyboardEventHandler unhandled_keyboard_event_handler_;
+
+  views::WebView* view_;
+
   DISALLOW_COPY_AND_ASSIGN(ConstrainedWebDialogDelegateViews);
 };
 
 }  // namespace
 
 class ConstrainedWebDialogDelegateViewViews
     : public views::WebView,
       public ConstrainedWebDialogDelegate,
       public views::WidgetDelegate {
  public:
@@ skipping 45 matching lines @@
   }
   virtual string16 GetWindowTitle() const OVERRIDE {
     return impl_->closed_via_webui() ? string16() :
         GetWebDialogDelegate()->GetDialogTitle();
   }
   virtual views::View* GetContentsView() OVERRIDE {
     return this;
   }
 
   // views::WebView overrides.
+  virtual bool AcceleratorPressed(
+      const ui::Accelerator& accelerator) OVERRIDE {
+    // Pressing ESC closes the dialog.
+    DCHECK_EQ(ui::VKEY_ESCAPE, accelerator.key_code());
+    window()->CloseConstrainedWindow();
+    return true;
+  }
   virtual gfx::Size GetPreferredSize() OVERRIDE {
     gfx::Size size;
     if (!impl_->closed_via_webui())
       GetWebDialogDelegate()->GetDialogSize(&size);
     return size;
   }
 
  private:
   scoped_ptr<ConstrainedWebDialogDelegateViews> impl_;
 
   DISALLOW_COPY_AND_ASSIGN(ConstrainedWebDialogDelegateViewViews);
 };
 
 ConstrainedWebDialogDelegateViewViews::ConstrainedWebDialogDelegateViewViews(
     Profile* profile,
     WebDialogDelegate* delegate,
     WebDialogWebContentsDelegate* tab_delegate)
     : views::WebView(profile),
       impl_(new ConstrainedWebDialogDelegateViews(profile,
                                                   delegate,
-                                                  tab_delegate)) {
+                                                  tab_delegate,
+                                                  this)) {
   SetWebContents(tab()->web_contents());
+
+  // Pressing ESC closes the dialog.
+  set_allow_accelerators(true);
+  AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
 }
 
 ConstrainedWebDialogDelegateViewViews::~ConstrainedWebDialogDelegateViewViews() {
 }
 
 ConstrainedWebDialogDelegate* ui::CreateConstrainedWebDialog(
     Profile* profile,
     WebDialogDelegate* delegate,
     WebDialogWebContentsDelegate* tab_delegate,
     TabContents* container) {
   ConstrainedWebDialogDelegateViewViews* constrained_delegate =
       new ConstrainedWebDialogDelegateViewViews(profile, delegate, tab_delegate);
   ConstrainedWindow* constrained_window =
       new ConstrainedWindowViews(container, constrained_delegate);
   constrained_delegate->set_window(constrained_window);
   return constrained_delegate;
 }