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// 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_UI_SEARCH_INSTANT_NTP_H_
#define CHROME_BROWSER_UI_SEARCH_INSTANT_NTP_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/ui/search/instant_loader.h"
#include "chrome/browser/ui/search/instant_page.h"
class Profile;
// InstantNTP is used to preload an Instant page that will be swapped in when a
// user navigates to a New Tab Page (NTP). The InstantNTP contents are never
// shown in an un-committed state.
class InstantNTP : public InstantPage,
public InstantLoader::Delegate {
public:
InstantNTP(InstantPage::Delegate* delegate, const std::string& instant_url);
virtual ~InstantNTP();
// Creates a new WebContents and loads |instant_url_| into it. Uses
// |active_tab|, if non-NULL, to initialize the size of the WebContents.
// |on_stale_callback| will be called when |loader_| determines the page to
// be stale.
void InitContents(Profile* profile,
const content::WebContents* active_tab,
const base::Closure& on_stale_callback);
// Releases the WebContents for the Instant page. This should be called when
// the page is about to be committed.
scoped_ptr<content::WebContents> ReleaseContents() WARN_UNUSED_RESULT;
// Returns the URL that we're loading.
const std::string& instant_url() const { return instant_url_; }
private:
// Overriden from InstantLoader::Delegate:
virtual void OnSwappedContents() OVERRIDE;
virtual void OnFocus() OVERRIDE;
virtual void OnMouseDown() OVERRIDE;
virtual void OnMouseUp() OVERRIDE;
virtual content::WebContents* OpenURLFromTab(
content::WebContents* source,
const content::OpenURLParams& params) OVERRIDE;
virtual void LoadCompletedMainFrame() OVERRIDE;
// Overridden from InstantPage:
virtual bool ShouldProcessRenderViewCreated() OVERRIDE;
virtual bool ShouldProcessRenderViewGone() OVERRIDE;
InstantLoader loader_;
const std::string instant_url_;
DISALLOW_COPY_AND_ASSIGN(InstantNTP);
};
#endif // CHROME_BROWSER_UI_SEARCH_INSTANT_NTP_H_
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