Instant: Use only one hidden WebContents per profile.

chrome/browser/instant/instant_controller_impl.h

+// Copyright 2013 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_INSTANT_INSTANT_CONTROLLER_IMPL_H_
+#define CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_IMPL_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/string16.h"
+#include "base/timer.h"
+#include "chrome/browser/instant/instant_controller.h"
+#include "chrome/browser/instant/instant_service_observer.h"
+#include "content/public/common/page_transition_types.h"
+#include "googleurl/src/gurl.h"
+#include "ui/gfx/rect.h"
+
+class InstantModel;
+class InstantOverlay;
+class InstantService;
+class Profile;
+
+namespace chrome {
+class BrowserInstantController;
+}
+
+class InstantControllerImpl : public InstantController,
+                              public InstantServiceObserver {
+ public:
+  InstantControllerImpl(chrome::BrowserInstantController* browser,
+                        Profile* profile);
+
+ private:
+  virtual ~InstantControllerImpl();
+
+  // Overridden from InstantController:
+  virtual bool Update(const AutocompleteMatch& match,
+                      const string16& user_text,
+                      const string16& full_text,
+                      size_t selection_start,
+                      size_t selection_end,
+                      bool verbatim,
+                      bool user_input_in_progress,
+                      bool omnibox_popup_is_open,
+                      bool escape_pressed) OVERRIDE;
+  virtual void HandleAutocompleteResults(
+      const std::vector<AutocompleteProvider*>& providers) OVERRIDE;
+  virtual bool OnUpOrDownKeyPressed(int count) OVERRIDE;
+  virtual void OnCancel(const AutocompleteMatch& match,
+                        const string16& full_text) OVERRIDE;
+  virtual const InstantModel* model() const OVERRIDE;
+  virtual bool IsOverlayingSearchResults() const OVERRIDE;
+  virtual content::WebContents* GetOverlayContents() const OVERRIDE;
+  virtual bool CommitIfPossible(InstantCommitType type) OVERRIDE;
+  virtual scoped_ptr<content::WebContents> ReleaseNTPContents() OVERRIDE;
+  virtual void AddModelObserver(InstantModelObserver* observer) OVERRIDE;
+  virtual void RemoveModelObserver(InstantModelObserver* observer) OVERRIDE;
+  virtual void SetPopupBounds(const gfx::Rect& bounds) OVERRIDE;
+  virtual void SetOmniboxBounds(const gfx::Rect& bounds) OVERRIDE;
+  virtual void BookmarkBarStateChanged(bool is_detached) OVERRIDE;
+  virtual void OmniboxFocusChanged(OmniboxFocusState state,
+                                   OmniboxFocusChangeReason reason,
+                                   gfx::NativeView view_gaining_focus) OVERRIDE;
+  virtual void TabDeactivated(content::WebContents* contents) OVERRIDE;
+  virtual void SearchModeChanged(const chrome::search::Mode& old_mode,
+                                 const chrome::search::Mode& new_mode) OVERRIDE;
+  virtual void ActiveTabChanged() OVERRIDE;
+  virtual void SwappedOverlayContents() OVERRIDE;
+  virtual void FocusedOverlayContents() OVERRIDE;
+  virtual void RenderViewGone(const content::WebContents* contents) OVERRIDE;
+  virtual void InitSearchBox(const content::WebContents* contents) OVERRIDE;
+  virtual void InstantSupportDetermined(
+      const content::WebContents* contents) OVERRIDE;
+  virtual void SetSuggestion(const content::WebContents* contents,
+                             const InstantSuggestion& suggestion) OVERRIDE;
+  virtual void NavigateToURL(const content::WebContents* contents,
+                             const GURL& url,
+                             content::PageTransition transition,
+                             WindowOpenDisposition disposition) OVERRIDE;
+  virtual void ShowOverlay(const content::WebContents* contents,
+                           int height,
+                           bool is_height_in_pixels) OVERRIDE;
+  virtual void StartKeyCapture(const content::WebContents* contents) OVERRIDE;
+  virtual void StopKeyCapture(const content::WebContents* contents) OVERRIDE;
+  virtual void DeleteMostVisitedItem(const content::WebContents* contents,
+                                     const GURL& url) OVERRIDE;
+  virtual void UndoMostVisitedItemDeletion(const content::WebContents* contents,
+                                           const GURL& url) OVERRIDE;
+  virtual void UndoAllMostVisitedItemDeletions(
+        const content::WebContents* contents) OVERRIDE;
+
+  // Overridden from InstantServiceObserver:
+  virtual void InstantStatusChanged() OVERRIDE;
+  virtual void ThemeInfoChanged() OVERRIDE;
+  virtual void MostVisitedItemsChanged() OVERRIDE;
+  virtual void InstantSupportDecided() OVERRIDE;
+
+  void HideOverlay();
+  void SendPopupBoundsToPage();
+
+  chrome::BrowserInstantController* const browser_;
+  InstantService* const service_;
+  scoped_ptr<InstantOverlay> overlay_;
+  scoped_ptr<InstantModel> model_;
+
+  string16 last_omnibox_text_;
+  bool last_verbatim_;
+  content::PageTransition last_transition_type_;
+  GURL url_for_history_;
+
+  gfx::Rect popup_bounds_;  // Current popup bounds.
+  gfx::Rect last_popup_bounds_;  // Last popup bounds sent to the page.
+  base::OneShotTimer<InstantControllerImpl> update_bounds_timer_;
+
+  DISALLOW_COPY_AND_ASSIGN(InstantControllerImpl);
+};
+
+#endif  // CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_IMPL_H_