keyboard: Update the visibility after tab-switch.

chrome/browser/ui/touch/frame/touch_browser_frame_view.cc

 // Copyright (c) 2010 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/touch/frame/touch_browser_frame_view.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/tab_contents/navigation_controller.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/touch/frame/keyboard_container_view.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/notification_type.h"
 #include "gfx/rect.h"
 
 namespace {
 
 const int kKeyboardHeight = 300;
 
+PropertyAccessor<bool>* GetFocusedStateAccessor() {
+  static PropertyAccessor<bool> state;
+  return &state;
+}
+
 }  // namespace
 
 ///////////////////////////////////////////////////////////////////////////////
 // TouchBrowserFrameView, public:
 
 TouchBrowserFrameView::TouchBrowserFrameView(BrowserFrame* frame,
                                              BrowserView* browser_view)
     : OpaqueBrowserFrameView(frame, browser_view),
       keyboard_showing_(false),
       keyboard_(NULL) {
   registrar_.Add(this,
                  NotificationType::NAV_ENTRY_COMMITTED,
                  NotificationService::AllSources());
   registrar_.Add(this,
                  NotificationType::FOCUS_CHANGED_IN_PAGE,
                  NotificationService::AllSources());
+  registrar_.Add(this,
+                 NotificationType::TAB_CONTENTS_DESTROYED,
+                 NotificationService::AllSources());
+
+  browser_view->browser()->tabstrip_model()->AddObserver(this);
 }
 
 TouchBrowserFrameView::~TouchBrowserFrameView() {
+  browser_view()->browser()->tabstrip_model()->RemoveObserver(this);
 }
 
 void TouchBrowserFrameView::Layout() {
   OpaqueBrowserFrameView::Layout();
 
   if (!keyboard_)
     return;
 
   keyboard_->SetVisible(keyboard_showing_);
   keyboard_->SetBounds(GetBoundsForReservedArea());
@@ skipping 40 matching lines @@
 
   // The keyboard that pops up may end up hiding the text entry. So make sure
   // the renderer scrolls when necessary to keep the textfield visible.
   if (keyboard_showing_) {
     RenderViewHost* host =
         browser_view()->browser()->GetSelectedTabContents()->render_view_host();
     host->ScrollFocusedEditableNodeIntoView();
   }
 }
 
+void TouchBrowserFrameView::TabSelectedAt(TabContentsWrapper* old_contents,
+                                          TabContentsWrapper* new_contents,
+                                          int index,
+                                          bool user_gesture) {
+  TabContents* contents = new_contents->tab_contents();
+  UpdateKeyboardAndLayout(GetFocusedStateAccessor()->GetProperty(
+      contents->property_bag()));
+}
+
+
 void TouchBrowserFrameView::Observe(NotificationType type,
                                     const NotificationSource& source,
                                     const NotificationDetails& details) {
   Browser* browser = browser_view()->browser();
   if (type == NotificationType::FOCUS_CHANGED_IN_PAGE) {
     // Only modify the keyboard state if the currently active tab sent the
     // notification.
-    const TabContents* tab_contents = browser->GetSelectedTabContents();
-    if (tab_contents &&
-        tab_contents->render_view_host() ==
-            Source<RenderViewHost>(source).ptr())
-      UpdateKeyboardAndLayout(*Details<const bool>(details).ptr());
+    TabContents* tab_contents = browser->GetSelectedTabContents();
+    if (tab_contents) {
+      const bool editable = *Details<const bool>(details).ptr();
+      if (tab_contents->render_view_host() ==
+          Source<RenderViewHost>(source).ptr())
+        UpdateKeyboardAndLayout(editable);
+
+      // Save the state of the focused field so that the keyboard visibility
+      // can be determined after tab switching.
+      GetFocusedStateAccessor()->SetProperty(

[sky, 2011/01/26 16:40:08]

This code is problematic if focus changes on a background page. Is that
possible? perhaps through script?

[sadrul, 2011/01/26 17:43:10]

Indeed! I made the change to update the property-bag of the tab-contents that
triggered the focus-change notification, instead of the tab-contents currently
in focus. Thanks for catching this.

+          tab_contents->property_bag(), editable);
+    }
   } else if (type == NotificationType::NAV_ENTRY_COMMITTED) {
     Browser* source_browser = Browser::GetBrowserForController(
         Source<NavigationController>(source).ptr(), NULL);
     // If the Browser for the keyboard has navigated, hide the keyboard.
     if (source_browser == browser)
       UpdateKeyboardAndLayout(false);
+  } else if (type == NotificationType::TAB_CONTENTS_DESTROYED) {
+    GetFocusedStateAccessor()->DeleteProperty(
+        Source<TabContents>(source).ptr()->property_bag());
   }
 }