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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/tab_contents/tab_contents.h"
#include "base/command_line.h"
#include "base/lazy_instance.h"
#include "chrome/browser/autocomplete_history_manager.h"
#include "chrome/browser/autofill/autofill_external_delegate.h"
#include "chrome/browser/autofill/autofill_manager.h"
#include "chrome/browser/automation/automation_tab_helper.h"
#include "chrome/browser/captive_portal/captive_portal_tab_helper.h"
#include "chrome/browser/content_settings/tab_specific_content_settings.h"
#include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
#include "chrome/browser/extensions/extension_tab_helper.h"
#include "chrome/browser/external_protocol/external_protocol_observer.h"
#include "chrome/browser/favicon/favicon_tab_helper.h"
#include "chrome/browser/history/history_tab_helper.h"
#include "chrome/browser/infobars/infobar_tab_helper.h"
#include "chrome/browser/omnibox_search_hint.h"
#include "chrome/browser/password_manager/password_manager.h"
#include "chrome/browser/password_manager/password_manager_delegate_impl.h"
#include "chrome/browser/plugin_observer.h"
#include "chrome/browser/prerender/prerender_tab_helper.h"
#include "chrome/browser/printing/print_preview_message_handler.h"
#include "chrome/browser/printing/print_view_manager.h"
#include "chrome/browser/safe_browsing/safe_browsing_tab_observer.h"
#include "chrome/browser/sessions/restore_tab_helper.h"
#include "chrome/browser/tab_contents/tab_contents_ssl_helper.h"
#include "chrome/browser/tab_contents/thumbnail_generator.h"
#include "chrome/browser/translate/translate_tab_helper.h"
#include "chrome/browser/ui/alternate_error_tab_observer.h"
#include "chrome/browser/ui/blocked_content/blocked_content_tab_helper.h"
#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
#include "chrome/browser/ui/constrained_window_tab_helper.h"
#include "chrome/browser/ui/find_bar/find_tab_helper.h"
#include "chrome/browser/ui/hung_plugin_tab_helper.h"
#include "chrome/browser/ui/intents/web_intent_picker_controller.h"
#include "chrome/browser/ui/pdf/pdf_tab_observer.h"
#include "chrome/browser/ui/prefs/prefs_tab_helper.h"
#include "chrome/browser/ui/sad_tab_helper.h"
#include "chrome/browser/ui/search/search.h"
#include "chrome/browser/ui/search/search_tab_helper.h"
#include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
#include "chrome/browser/ui/snapshot_tab_helper.h"
#include "chrome/browser/ui/sync/one_click_signin_helper.h"
#include "chrome/browser/ui/sync/tab_contents_synced_tab_delegate.h"
#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
#include "chrome/browser/ui/zoom/zoom_controller.h"
#include "chrome/browser/view_type_utils.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/thumbnail_support.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/web_contents.h"
using content::WebContents;
namespace {
static base::LazyInstance<base::PropertyAccessor<TabContents*> >
g_tab_contents_property_accessor = LAZY_INSTANCE_INITIALIZER;
} // namespace
////////////////////////////////////////////////////////////////////////////////
// TabContents, public:
TabContents::TabContents(WebContents* contents)
: content::WebContentsObserver(contents),
in_destructor_(false),
web_contents_(contents) {
DCHECK(contents);
DCHECK(!FromWebContents(contents));
chrome::SetViewType(contents, chrome::VIEW_TYPE_TAB_CONTENTS);
// Stash this in the property bag so it can be retrieved without having to
// go to a Browser.
property_accessor()->SetProperty(contents->GetPropertyBag(), this);
// Create the tab helpers.
autocomplete_history_manager_.reset(new AutocompleteHistoryManager(contents));
autofill_manager_ = new AutofillManager(this);
if (CommandLine::ForCurrentProcess()->HasSwitch(
switches::kExternalAutofillPopup)) {
autofill_external_delegate_.reset(
AutofillExternalDelegate::Create(this, autofill_manager_.get()));
autofill_manager_->SetExternalDelegate(autofill_external_delegate_.get());
autocomplete_history_manager_->SetExternalDelegate(
autofill_external_delegate_.get());
}
#if defined(ENABLE_AUTOMATION)
automation_tab_helper_.reset(new AutomationTabHelper(contents));
#endif
blocked_content_tab_helper_.reset(new BlockedContentTabHelper(this));
bookmark_tab_helper_.reset(new BookmarkTabHelper(this));
#if defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
captive_portal_tab_helper_.reset(
new captive_portal::CaptivePortalTabHelper(profile(), web_contents()));
#endif
constrained_window_tab_helper_.reset(new ConstrainedWindowTabHelper(this));
core_tab_helper_.reset(new CoreTabHelper(contents));
extension_tab_helper_.reset(new ExtensionTabHelper(this));
favicon_tab_helper_.reset(new FaviconTabHelper(contents));
find_tab_helper_.reset(new FindTabHelper(contents));
history_tab_helper_.reset(new HistoryTabHelper(contents));
hung_plugin_tab_helper_.reset(new HungPluginTabHelper(contents));
infobar_tab_helper_.reset(new InfoBarTabHelper(contents));
password_manager_delegate_.reset(new PasswordManagerDelegateImpl(this));
password_manager_.reset(
new PasswordManager(contents, password_manager_delegate_.get()));
prefs_tab_helper_.reset(new PrefsTabHelper(contents));
prerender_tab_helper_.reset(new prerender::PrerenderTabHelper(this));
restore_tab_helper_.reset(new RestoreTabHelper(contents));
search_engine_tab_helper_.reset(new SearchEngineTabHelper(contents));
bool is_search_enabled =
chrome::search::IsInstantExtendedAPIEnabled(profile());
search_tab_helper_.reset(
new chrome::search::SearchTabHelper(this, is_search_enabled));
snapshot_tab_helper_.reset(new SnapshotTabHelper(contents));
ssl_helper_.reset(new TabContentsSSLHelper(this));
synced_tab_delegate_.reset(new TabContentsSyncedTabDelegate(this));
content_settings_.reset(new TabSpecificContentSettings(contents));
translate_tab_helper_.reset(new TranslateTabHelper(contents));
zoom_controller_.reset(new ZoomController(this));
#if !defined(OS_ANDROID)
web_intent_picker_controller_.reset(new WebIntentPickerController(this));
sad_tab_helper_.reset(new SadTabHelper(contents));
#endif
// Create the per-tab observers.
alternate_error_page_tab_observer_.reset(
new AlternateErrorPageTabObserver(contents, profile()));
webnavigation_observer_.reset(
new extensions::WebNavigationTabObserver(contents));
external_protocol_observer_.reset(new ExternalProtocolObserver(contents));
pdf_tab_observer_.reset(new PDFTabObserver(this));
safe_browsing_tab_observer_.reset(
new safe_browsing::SafeBrowsingTabObserver(this));
plugin_observer_.reset(new PluginObserver(this));
#if !defined(OS_ANDROID)
if (OmniboxSearchHint::IsEnabled(profile()))
omnibox_search_hint_.reset(new OmniboxSearchHint(this));
#endif
#if defined(ENABLE_PRINTING)
print_view_manager_.reset(new printing::PrintViewManager(this));
print_preview_.reset(new printing::PrintPreviewMessageHandler(contents));
#endif
// Start the in-browser thumbnailing if the feature is enabled.
if (ShouldEnableInBrowserThumbnailing()) {
thumbnail_generator_.reset(new ThumbnailGenerator);
thumbnail_generator_->StartThumbnailing(web_contents_.get());
}
// If this is not an incognito window, setup to handle one-click login.
// We don't want to check that the profile is already connected at this time
// because the connected state may change while this tab is open. Having a
// one-click signin helper attached does not cause problems if the profile
// happens to be already connected.
#if defined(ENABLE_ONE_CLICK_SIGNIN)
if (OneClickSigninHelper::CanOffer(contents, false))
one_click_signin_helper_.reset(new OneClickSigninHelper(contents));
#endif
}
TabContents::~TabContents() {
in_destructor_ = true;
// Need to reset |thumbnail_generator_| here before |web_contents_| is
// deleted because destructing |web_contents_| can end up causing the
// thumbnailer to generate a thumbnail. Since TabContents can be
// destructed during shutdown, trying to generate a thumbnail by sending an
// IPC message to the GPU process is not safe. Sending
// chrome::NOTIFICATION_TAB_CONTENTS_DESTROYED can also cause the thumbnailer
// to generate a thumbnail, so this must be placed before sending the
// notification.
thumbnail_generator_.reset();
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_TAB_CONTENTS_DESTROYED,
content::Source<TabContents>(this),
content::NotificationService::NoDetails());
// Need to tear down infobars before the WebContents goes away.
// TODO(avi): Can we get this handled by the tab helper itself?
infobar_tab_helper_.reset();
}
base::PropertyAccessor<TabContents*>* TabContents::property_accessor() {
return g_tab_contents_property_accessor.Pointer();
}
TabContents* TabContents::Clone() {
WebContents* new_web_contents = web_contents()->Clone();
TabContents* new_tab_contents = new TabContents(new_web_contents);
// TODO(avi): Can we generalize this so that knowledge of the functionings of
// the tab helpers isn't required here?
new_tab_contents->extension_tab_helper()->CopyStateFrom(
*extension_tab_helper_.get());
return new_tab_contents;
}
// static
TabContents* TabContents::FromWebContents(WebContents* contents) {
TabContents** tab_contents =
property_accessor()->GetProperty(contents->GetPropertyBag());
return tab_contents ? *tab_contents : NULL;
}
// static
const TabContents* TabContents::FromWebContents(const WebContents* contents) {
TabContents* const* tab_contents =
property_accessor()->GetProperty(contents->GetPropertyBag());
return tab_contents ? *tab_contents : NULL;
}
WebContents* TabContents::web_contents() const {
return web_contents_.get();
}
Profile* TabContents::profile() const {
return Profile::FromBrowserContext(web_contents()->GetBrowserContext());
}
////////////////////////////////////////////////////////////////////////////////
// WebContentsObserver overrides
void TabContents::WebContentsDestroyed(WebContents* tab) {
// Destruction of the WebContents should only be done by us from our
// destructor. Otherwise it's very likely we (or one of the helpers we own)
// will attempt to access the WebContents and we'll crash.
DCHECK(in_destructor_);
}
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