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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_INSTANT_INSTANT_OVERLAY_H_
#define CHROME_BROWSER_INSTANT_INSTANT_OVERLAY_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/history/history_types.h"
#include "chrome/browser/instant/instant_controller.h"
#include "chrome/browser/instant/instant_loader.h"
#include "chrome/browser/instant/instant_page.h"
class Profile;
namespace content {
class WebContents;
}
// InstantOverlay is used to communicate with a preview WebContents that it owns
// and loads the "Instant URL" into. This preview can appear and disappear at
// will as the user types in the omnibox.
class InstantOverlay : public InstantPage,
public InstantLoader::Delegate {
public:
// Returns the InstantOverlay for |contents| if it's used for Instant.
static InstantOverlay* FromWebContents(const content::WebContents* contents);
InstantOverlay(InstantController* controller,
const std::string& instant_url);
virtual ~InstantOverlay();
// Creates a new WebContents and loads |instant_url_| into it. Uses
// |active_tab|, if non-NULL, to initialize the size of the WebContents.
void InitContents(Profile* profile,
const content::WebContents* active_tab);
// Releases the overlay WebContents. This should be called when the overlay
// is 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_; }
// Returns whether the underlying contents is stale (i.e. was loaded too long
// ago).
bool is_stale() const { return is_stale_; }
// Returns true if the mouse or a touch pointer is down due to activating the
// preview contents.
bool is_pointer_down_from_activate() const {
return is_pointer_down_from_activate_;
}
// Returns info about the last navigation by the Instant page. If the page
// hasn't navigated since the last Update(), the URL is empty.
const history::HistoryAddPageArgs& last_navigation() const {
return last_navigation_;
}
// Called by the history tab helper with information that it would have added
// to the history service had this WebContents not been used for Instant.
void DidNavigate(const history::HistoryAddPageArgs& add_page_args);
// Returns true if the overlay is using
// InstantController::kLocalOmniboxPopupURL as the |instant_url_|.
bool IsUsingLocalPreview() const;
// Overridden from InstantPage:
virtual void Update(const string16& text,
size_t selection_start,
size_t selection_end,
bool verbatim) OVERRIDE;
private:
FRIEND_TEST_ALL_PREFIXES(InstantTest, InstantOverlayRefresh);
// Helper to access delegate() as an InstantController object.
InstantController* instant_controller() const {
return static_cast<InstantController*>(delegate());
}
// Overridden from InstantPage:
virtual bool ShouldProcessRenderViewCreated() OVERRIDE;
virtual bool ShouldProcessRenderViewGone() OVERRIDE;
virtual bool ShouldProcessAboutToNavigateMainFrame() OVERRIDE;
virtual bool ShouldProcessSetSuggestions() OVERRIDE;
virtual bool ShouldProcessShowInstantPreview() OVERRIDE;
virtual bool ShouldProcessNavigateToURL() OVERRIDE;
// 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;
// Called when the underlying page becomes stale.
void HandleStalePage();
InstantLoader loader_;
const std::string instant_url_;
bool is_stale_;
bool is_pointer_down_from_activate_;
history::HistoryAddPageArgs last_navigation_;
DISALLOW_COPY_AND_ASSIGN(InstantOverlay);
};
#endif // CHROME_BROWSER_INSTANT_INSTANT_OVERLAY_H_
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