Sidebar mini tabs UI (views version)....

chrome/browser/ui/views/sidebar/sidebar_tab_strip_host.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_SIDEBAR_SIDEBAR_TAB_STRIP_HOST_H_
+#define CHROME_BROWSER_UI_VIEWS_SIDEBAR_SIDEBAR_TAB_STRIP_HOST_H_
+#pragma once
+
+#include "base/scoped_ptr.h"
+#include "gfx/native_widget_types.h"
+
+class BrowserView;
+class SidebarBaseTabStrip;
+
+namespace gfx {
+class Rect;
+class Size;
+}
+
+namespace views {
+class View;
+class Widget;
+}
+
+// SidebarTabStripHost implements the container widget for the UI that
+// is shown on top of the browser contents. It uses the appropriate
+// implementation from sidebar_tab_strip_host_win.cc or
+// sidebar_tab_strip_host_gtk.cc to draw its content and is responsible
+// for showing, hiding and resizing the host widget and keeping widget shape
+// in sync with sidebar tab strip.
+class SidebarTabStripHost {
+ public:
+  explicit SidebarTabStripHost(BrowserView* browser_view);
+  virtual ~SidebarTabStripHost();
+
+  // Initializes the dropdown bar host with the given view.
+  void Init(SidebarBaseTabStrip* view);
+
+  // Moves the widget to the provided location, moves it to top
+  // in the z-order (HWND_TOP, not HWND_TOPMOST for windows) and shows
+  // the widget if new_pos is not empty, hides it otherwise.
+  virtual void SetPosition(const gfx::Rect& new_pos);
+
+  // Updates host widget to match the shape of the tab strip.
+  void UpdateWindowEdges();
+
+  // Returns the size of the widget's contents view.
+  gfx::Size GetContentsSize() const;
+
+ protected:
+  // Returns the sidebar tab strip view.
+  SidebarBaseTabStrip* view() const { return view_; }
+
+  // Creates and returns the native Widget.
+  views::Widget* CreateHost();
+
+  // Allows platform implementation to tweak widget position.
+  void SetWidgetPositionNative(const gfx::Rect& new_pos, bool no_redraw);
+
+ private:
+  // The BrowserView that created us.
+  BrowserView* const browser_view_;
+
+  // Our view, which is responsible for drawing the UI.
+  SidebarBaseTabStrip* view_;
+
+  // Host widget.
+  scoped_ptr<views::Widget> host_;
+
+  DISALLOW_COPY_AND_ASSIGN(SidebarTabStripHost);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_SIDEBAR_SIDEBAR_TAB_STRIP_HOST_H_
+