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// Copyright (c) 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.
#include "chrome/browser/ui/browser_instant_controller.h"
#include "chrome/browser/browser_shutdown.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/instant/instant_controller.h"
#include "chrome/browser/instant/instant_unload_handler.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_tabstrip.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/omnibox/location_bar.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/tab_contents/tab_contents.h"
#include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/web_contents.h"
namespace chrome {
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, public:
BrowserInstantController::BrowserInstantController(Browser* browser)
: browser_(browser) {
profile_pref_registrar_.Init(browser_->profile()->GetPrefs());
profile_pref_registrar_.Add(prefs::kInstantEnabled, this);
CreateInstantIfNecessary();
browser_->tab_strip_model()->AddObserver(this);
}
BrowserInstantController::~BrowserInstantController() {
browser_->tab_strip_model()->RemoveObserver(this);
}
bool BrowserInstantController::OpenInstant(WindowOpenDisposition disposition) {
if (!instant() || !instant()->PrepareForCommit() ||
disposition == NEW_BACKGROUND_TAB) {
// NEW_BACKGROUND_TAB results in leaving the omnibox open, so we don't
// attempt to use the instant preview.
return false;
}
if (disposition == CURRENT_TAB) {
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_INSTANT_COMMITTED,
content::Source<TabContents>(instant()->CommitCurrentPreview(
INSTANT_COMMIT_PRESSED_ENTER)),
content::NotificationService::NoDetails());
return true;
}
if (disposition == NEW_FOREGROUND_TAB) {
TabContents* preview_contents = instant()->ReleasePreviewContents(
INSTANT_COMMIT_PRESSED_ENTER, NULL);
// HideInstant is invoked after release so that InstantController is not
// active when HideInstant asks it for its state.
HideInstant();
preview_contents->web_contents()->GetController().PruneAllButActive();
browser_->tab_strip_model()->AddTabContents(
preview_contents,
-1,
instant()->last_transition_type(),
TabStripModel::ADD_ACTIVE);
instant()->CompleteRelease(preview_contents);
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_INSTANT_COMMITTED,
content::Source<TabContents>(preview_contents),
content::NotificationService::NoDetails());
return true;
}
// The omnibox currently doesn't use other dispositions, so we don't attempt
// to handle them. If you hit this NOTREACHED file a bug and I'll (sky) add
// support for the new disposition.
NOTREACHED();
return false;
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, InstantControllerDelegate implementation:
void BrowserInstantController::ShowInstant(TabContents* preview_contents) {
browser_->window()->ShowInstant(preview_contents);
// TODO(beng): investigate if we can avoid this and instead rely on the
// visibility of the WebContentsView
chrome::GetActiveWebContents(browser_)->WasHidden();
preview_contents->web_contents()->WasRestored();
}
void BrowserInstantController::HideInstant() {
browser_->window()->HideInstant();
if (chrome::GetActiveWebContents(browser_))
chrome::GetActiveWebContents(browser_)->WasRestored();
if (instant_->GetPreviewContents())
instant_->GetPreviewContents()->web_contents()->WasHidden();
}
void BrowserInstantController::CommitInstant(TabContents* preview_contents) {
TabContents* tab_contents = chrome::GetActiveTabContents(browser_);
int index = browser_->tab_strip_model()->GetIndexOfTabContents(tab_contents);
DCHECK_NE(TabStripModel::kNoTab, index);
// TabStripModel takes ownership of preview_contents.
browser_->tab_strip_model()->ReplaceTabContentsAt(index, preview_contents);
// InstantUnloadHandler takes ownership of tab_contents.
instant_unload_handler_->RunUnloadListenersOrDestroy(tab_contents, index);
GURL url = preview_contents->web_contents()->GetURL();
DCHECK(browser_->profile()->GetExtensionService());
if (browser_->profile()->GetExtensionService()->IsInstalledApp(url)) {
AppLauncherHandler::RecordAppLaunchType(
extension_misc::APP_LAUNCH_OMNIBOX_INSTANT);
}
}
void BrowserInstantController::SetSuggestedText(
const string16& text,
InstantCompleteBehavior behavior) {
if (browser_->window()->GetLocationBar())
browser_->window()->GetLocationBar()->SetSuggestedText(text, behavior);
}
gfx::Rect BrowserInstantController::GetInstantBounds() {
return browser_->window()->GetInstantBounds();
}
void BrowserInstantController::InstantPreviewFocused() {
// NOTE: This is only invoked on aura.
browser_->window()->WebContentsFocused(
instant_->GetPreviewContents()->web_contents());
}
TabContents* BrowserInstantController::GetInstantHostTabContents() const {
return chrome::GetActiveTabContents(browser_);
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, content::NotificationObserver implementation:
void BrowserInstantController::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(type == chrome::NOTIFICATION_PREF_CHANGED);
const std::string& pref_name =
*content::Details<std::string>(details).ptr();
DCHECK(pref_name == prefs::kInstantEnabled);
if (browser_shutdown::ShuttingDownWithoutClosingBrowsers() ||
!InstantController::IsEnabled(browser_->profile())) {
if (instant()) {
instant()->DestroyPreviewContents();
instant_.reset();
instant_unload_handler_.reset();
}
} else {
CreateInstantIfNecessary();
}
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, TabStripModelObserver implementation:
void BrowserInstantController::TabDeactivated(TabContents* contents) {
if (instant())
instant()->Hide();
}
////////////////////////////////////////////////////////////////////////////////
// BrowserInstantController, private:
void BrowserInstantController::CreateInstantIfNecessary() {
if (browser_->is_type_tabbed() &&
InstantController::IsEnabled(browser_->profile()) &&
!browser_->profile()->IsOffTheRecord()) {
instant_.reset(new InstantController(this, InstantController::INSTANT));
instant_unload_handler_.reset(new InstantUnloadHandler(browser_));
}
}
} // namespace chrome
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