Implements the "Set to default" button on the zoom bubble.

chrome/browser/ui/views/location_bar/zoom_bubble_view.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/views/location_bar/zoom_bubble_view.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/tab_contents/tab_contents.h"
+#include "chrome/browser/ui/zoom/zoom_controller.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/render_view_host.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
-#include "ui/views/layout/fill_layout.h"
+#include "ui/views/controls/button/text_button.h"
+#include "ui/views/controls/separator.h"
+#include "ui/views/layout/box_layout.h"
 
 namespace {
 
 // The number of milliseconds the bubble should stay on the screen for if it
 // will automatically close.
 const int kBubbleCloseDelay = 400;
 
+// The number of pixels between the label and the separator and the separator
+// and the button.
+const int kVerticalSpacing = 5;
+
+// The font size of the percentage label.
+const int kPercentageFontSize = 20;
+
 }
 
 // static
 ZoomBubbleView* ZoomBubbleView::zoom_bubble_ = NULL;
 
 // static
 void ZoomBubbleView::ShowBubble(views::View* anchor_view,
-                                int zoom_percent,
+                                TabContents* tab_contents,
                                 bool auto_close) {
   // If the bubble is already showing in this window and its |auto_close_| value
   // is equal to |auto_close|, the bubble can be reused and only the label text
   // needs to be updated.
   if (zoom_bubble_ &&
       zoom_bubble_->anchor_view() == anchor_view &&
       zoom_bubble_->auto_close_ == auto_close) {
-    zoom_bubble_->label_->SetText(
-        l10n_util::GetStringFUTF16Int(IDS_ZOOM_PERCENT, zoom_percent));
-
-    if (auto_close) {
-      // If the bubble should be closed automatically, reset the timer so that
-      // it will show for the full amount of time instead of only what remained
-      // from the previous time.
-      zoom_bubble_->timer_.Reset();
-    }
+    zoom_bubble_->Refresh();
   } else {
     // If the bubble is already showing but its |auto_close_| value is not equal
     // to |auto_close|, the bubble's focus properties must change, so the
     // current bubble must be closed and a new one created.
     if (zoom_bubble_)
       zoom_bubble_->Close();
 
-    zoom_bubble_ = new ZoomBubbleView(anchor_view, zoom_percent, auto_close);
+    zoom_bubble_ = new ZoomBubbleView(anchor_view, tab_contents, auto_close);
     views::BubbleDelegateView::CreateBubble(zoom_bubble_);
     zoom_bubble_->Show();
   }
 }
 
 // static
 void ZoomBubbleView::CloseBubble() {
   if (zoom_bubble_)
     zoom_bubble_->Close();
 }
 
 // static
 bool ZoomBubbleView::IsShowing() {
   return zoom_bubble_ != NULL;
 }
 
 ZoomBubbleView::ZoomBubbleView(views::View* anchor_view,
-                               int zoom_percent,
+                               TabContents* tab_contents,
                                bool auto_close)
     : BubbleDelegateView(anchor_view, views::BubbleBorder::TOP_RIGHT),
       label_(NULL),
-      zoom_percent_(zoom_percent),
+      tab_contents_(tab_contents),
       auto_close_(auto_close) {
   set_use_focusless(auto_close);
 }
 
 ZoomBubbleView::~ZoomBubbleView() {
 }
 
+void ZoomBubbleView::Refresh() {
+  int zoom_percent = tab_contents_->zoom_controller()->zoom_percent();
+  label_->SetText(
+      l10n_util::GetStringFUTF16Int(IDS_ZOOM_PERCENT, zoom_percent));
+
+  if (auto_close_) {
+    // If the bubble should be closed automatically, reset the timer so that
+    // it will show for the full amount of time instead of only what remained
+    // from the previous time.
+    timer_.Reset();
+  }
+}
+
+void ZoomBubbleView::ButtonPressed(views::Button* sender,
+                                   const views::Event& event) {
+  double default_zoom_level = Profile::FromBrowserContext(
+      tab_contents_->web_contents()->GetBrowserContext())->
+      GetPrefs()->GetDouble(prefs::kDefaultZoomLevel);
+  tab_contents_->web_contents()->GetRenderViewHost()->
+      SetZoomLevel(default_zoom_level);
+}
+
 void ZoomBubbleView::Close() {
   GetWidget()->Close();
 }
 
 void ZoomBubbleView::Init() {
-  SetLayoutManager(new views::FillLayout());
+  SetLayoutManager(new views::BoxLayout(
+      views::BoxLayout::kVertical, 0, 0, kVerticalSpacing));
+
+  int zoom_percent = tab_contents_->zoom_controller()->zoom_percent();
   label_ = new views::Label(
-      l10n_util::GetStringFUTF16Int(IDS_ZOOM_PERCENT, zoom_percent_));
+      l10n_util::GetStringFUTF16Int(IDS_ZOOM_PERCENT, zoom_percent));
+  gfx::Font font(label_->font().GetFontName(), kPercentageFontSize);
+  label_->SetFont(font);
   AddChildView(label_);
 
   if (auto_close_) {
     timer_.Start(
         FROM_HERE,
         base::TimeDelta::FromMilliseconds(kBubbleCloseDelay),
         this,
         &ZoomBubbleView::Close);
+  } else {
+    AddChildView(new views::Separator());
+
+    AddChildView(new views::TextButton(
+        this, l10n_util::GetStringUTF16(IDS_ZOOM_SET_DEFAULT)));
   }
 }
 
 void ZoomBubbleView::WindowClosing() {
   DCHECK(zoom_bubble_ == this);
   zoom_bubble_ = NULL;
 }