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// 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_SEARCH_SEARCH_TAB_HELPER_H_
#define CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "chrome/browser/ui/search/search_model.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
namespace content {
class WebContents;
}
// Per-tab search "helper". Acts as the owner and controller of the tab's
// search UI model.
class SearchTabHelper : public content::NotificationObserver,
public content::WebContentsObserver,
public content::WebContentsUserData<SearchTabHelper> {
public:
virtual ~SearchTabHelper();
SearchModel* model() {
return &model_;
}
// Invoked when the OmniboxEditModel changes state in some way that might
// affect the search mode.
void OmniboxEditModelChanged(bool user_input_in_progress, bool cancelling);
// Invoked when the active navigation entry is updated in some way that might
// affect the search mode. This is used by Instant when it "fixes up" the
// virtual URL of the active entry. Regular navigations are captured through
// the notification system and shouldn't call this method.
void NavigationEntryUpdated();
// Invoked from SearchDelegate::StopObservingTab().
void OnStopObservingTab();
private:
friend class content::WebContentsUserData<SearchTabHelper>;
explicit SearchTabHelper(content::WebContents* web_contents);
// Overridden from content::NotificationObserver:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Overridden from contents::WebContentsObserver:
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
// Sets the mode of the model based on the current URL of web_contents().
void UpdateMode();
// Handlers for SearchBox API to show and hide top bars (bookmark and info
// bars).
void OnSearchBoxShowBars(int page_id);
void OnSearchBoxHideBars(int page_id);
const bool is_search_enabled_;
// Tracks the last value passed to OmniboxEditModelChanged().
bool user_input_in_progress_;
// Model object for UI that cares about search state.
SearchModel model_;
content::NotificationRegistrar registrar_;
content::WebContents* web_contents_;
DISALLOW_COPY_AND_ASSIGN(SearchTabHelper);
};
#endif // CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
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