Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/views/frame/contents_container.h

 // Copyright 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "chrome/common/instant_types.h"
-#include "chrome/common/search_types.h"
 #include "ui/views/controls/webview/webview.h"
 #include "ui/views/view.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace gfx {
 class Rect;
 }
 
 // ContentsContainer is responsible for managing the WebContents views.
 // ContentsContainer has up to two children: one for the currently active
 // WebContents and one for Instant's WebContents.
 class ContentsContainer : public views::View {
  public:
   // Internal class name
   static const char kViewClassName[];
 
   explicit ContentsContainer(views::WebView* active);
   virtual ~ContentsContainer();
 
-  // Makes the preview view the active view and nulls out the old active view.
+  // Makes the overlay view the active view and nulls out the old active view.
   // The caller must delete or remove the old active view separately.
-  void MakePreviewContentsActiveContents();
+  void MakeOverlayContentsActiveContents();
 
-  // Sets the preview view. This does not delete the old.
-  void SetPreview(views::WebView* preview,
-                  content::WebContents* preview_web_contents,
-                  const chrome::search::Mode& search_mode,
+  // Sets the overlay view. This does not delete the old.
+  void SetOverlay(views::WebView* overlay,
+                  content::WebContents* overlay_web_contents,
                   int height,
-                  InstantSizeUnits units,
+                  bool is_height_in_pixels,
                   bool draw_drop_shadow);
 
-  // When the active content is reset and we have a visible preview,
-  // the preview must be stacked back at top.
-  void MaybeStackPreviewAtTop();
-
-  content::WebContents* preview_web_contents() const {
-    return preview_web_contents_;
+  content::WebContents* overlay_web_contents() const {
+    return overlay_web_contents_;
   }
 
-  int preview_height() const {
-    return preview_ ? preview_->bounds().height() : 0;
+  int overlay_height() const {
+    return overlay_ ? overlay_->bounds().height() : 0;
   }
 
   // Sets the active top margin; the active WebView's y origin would be
   // positioned at this |margin|, causing the active WebView to be pushed down
   // vertically by |margin| pixels in the |ContentsContainer|.
   void SetActiveTopMargin(int margin);
 
-  // Returns the bounds the preview would be shown at.
-  gfx::Rect GetPreviewBounds() const;
+  // Returns the bounds the overlay would be shown at.
+  gfx::Rect GetOverlayBounds() const;
 
-  // Returns true if preview occupies full height of content page.
-  bool IsPreviewFullHeight(int preview_height,
-                           InstantSizeUnits preview_height_units) const;
+  // Returns true if overlay occupies full height of content page.
+  bool IsOverlayFullHeight(int overlay_height, bool is_height_in_pixels) const;
 
  private:
   // Returns true if |shadow_view_| was a child of |ContentsContainer| and
   // successfully removed from view hierarchy.
   // If |delete_view| is true, |shadow_view_| is deleted regardless if it is a
   // child of |ContentsContainer|.
   bool RemoveShadowView(bool delete_view);
 
   // Overridden from views::View:
   virtual void Layout() OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
 
   views::WebView* active_;
-  views::WebView* preview_;
+  views::WebView* overlay_;
   scoped_ptr<views::View> shadow_view_;
-  content::WebContents* preview_web_contents_;
-  chrome::search::Mode search_mode_;
+  content::WebContents* overlay_web_contents_;
   bool draw_drop_shadow_;
 
   // The margin between the top and the active view. This is used to make the
-  // preview overlap the bookmark bar on the new tab page.
+  // overlay overlap the bookmark bar on the new tab page.
   int active_top_margin_;
 
-  // The desired height of the preview and units.
-  int preview_height_;
-  InstantSizeUnits preview_height_units_;
+  // The desired height of the overlay and whether it's in pixels or percent.
+  int overlay_height_;
+  bool is_height_in_pixels_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentsContainer);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_