Make panel adjust bounds per preferred size change notification on Windows.

chrome/browser/ui/panels/panel_browser_view_browsertest.cc

 // Copyright (c) 2011 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 "base/i18n/time_formatting.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/panels/base_panel_browser_test.h"
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_browser_frame_view.h"
 #include "chrome/browser/ui/panels/panel_browser_view.h"
 #include "chrome/browser/ui/panels/panel_manager.h"
 #include "chrome/browser/ui/panels/panel_mouse_watcher_win.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/test/base/ui_test_utils.h"
 #include "grit/generated_resources.h"
+#include "net/base/net_util.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/animation/slide_animation.h"
 #include "views/controls/button/image_button.h"
 #include "views/controls/button/menu_button.h"
 #include "views/controls/image_view.h"
 #include "views/controls/label.h"
 #include "views/controls/link.h"
 #include "views/controls/textfield/textfield.h"
 
+const FilePath::CharType* kUpdateSizeTestFile =
+    FILE_PATH_LITERAL("update-preferred-size.html");
+
 class PanelBrowserViewTest : public BasePanelBrowserTest {
  public:
   PanelBrowserViewTest() : BasePanelBrowserTest() { }
 
  protected:
   struct MenuItem {
     int id;
     bool enabled;
   };
 
@@ skipping 339 matching lines @@
     mock_auto_hiding_desktop_bar()->SetThickness(
         AutoHidingDesktopBar::ALIGN_RIGHT, right_bar_thickness);
     MessageLoop::current()->RunAllPending();
     EXPECT_EQ(testing_work_area().height() - bottom_bar_thickness,
               panel->GetBounds().bottom());
     EXPECT_EQ(testing_work_area().right() - right_bar_thickness,
               panel->GetBounds().right());
 
     panel->Close();
   }
+
+  void TestUpdatePreferredSize() {
+    PanelManager::GetInstance()->enable_auto_sizing(true);
+
+    // Create a test panel with tab contents loaded.
+    CreatePanelParams params("PanelTest1", gfx::Rect(0, 0, 100, 100),
+                             SHOW_AS_ACTIVE);
+    params.url = GURL(chrome::kAboutBlankURL);
+    Panel* panel = CreatePanelWithParams(params);
+
+    // Load the test page.
+    ui_test_utils::NavigateToURL(panel->browser(),
+        ui_test_utils::GetTestUrl(FilePath(FilePath::kCurrentDirectory),
+                                  FilePath(kUpdateSizeTestFile)));
+    gfx::Rect initial_bounds = panel->GetBounds();
+    EXPECT_EQ(100, initial_bounds.width());
+    EXPECT_EQ(100, initial_bounds.height());
+
+    // Expand the test page.
+    EXPECT_TRUE(ui_test_utils::ExecuteJavaScript(
+        panel->browser()->GetSelectedTabContents()->render_view_host(),
+        std::wstring(),
+        L"changeSize(50);"));
+
+    // Wait till the bounds get changed.
+    gfx::Rect bounds_on_grow;
+    while ((bounds_on_grow = panel->GetBounds()) == initial_bounds) {
+      MessageLoop::current()->PostTask(FROM_HERE, new MessageLoop::QuitTask());
+      MessageLoop::current()->RunAllPending();
+    }
+    EXPECT_GT(bounds_on_grow.width(), initial_bounds.width());
+    EXPECT_EQ(bounds_on_grow.height(), initial_bounds.height());
+
+    // Shrink the test page.
+    EXPECT_TRUE(ui_test_utils::ExecuteJavaScript(
+        panel->browser()->GetSelectedTabContents()->render_view_host(),
+        std::wstring(),
+        L"changeSize(-30);"));
+
+    // Wait till the bounds get changed.
+    gfx::Rect bounds_on_shrink;
+    while ((bounds_on_shrink = panel->GetBounds()) == bounds_on_grow) {
+      MessageLoop::current()->PostTask(FROM_HERE, new MessageLoop::QuitTask());
+      MessageLoop::current()->RunAllPending();
+    }
+    EXPECT_LT(bounds_on_shrink.width(), bounds_on_grow.width());
+    EXPECT_GT(bounds_on_shrink.width(), initial_bounds.width());
+    EXPECT_EQ(bounds_on_shrink.height(), initial_bounds.height());
+
+    panel->Close();
+  }
 };
 
 // Panel is not supported for Linux view yet.
 #if !defined(OS_LINUX) || !defined(TOOLKIT_VIEWS)
 IN_PROC_BROWSER_TEST_F(PanelBrowserViewTest, CreatePanel) {
   Panel* panel = CreatePanel("PanelTest");
   PanelBrowserView* browser_view = GetBrowserView(panel);
   PanelBrowserFrameView* frame_view = browser_view->GetFrameView();
 
   // The bounds animation should not be triggered when the panel is up for the
@@ skipping 128 matching lines @@
   TestMinimizeAndRestore(true);
 }
 
 IN_PROC_BROWSER_TEST_F(PanelBrowserViewTest, DrawAttention) {
   TestDrawAttention();
 }
 
 IN_PROC_BROWSER_TEST_F(PanelBrowserViewTest, ChangeAutoHideTaskBarThickness) {
   TestChangeAutoHideTaskBarThickness();
 }
+
+IN_PROC_BROWSER_TEST_F(PanelBrowserViewTest, UpdatePreferredSize) {
+  TestUpdatePreferredSize();
+}
 #endif