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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/favicon/favicon_tab_helper.h"
#include "chrome/browser/favicon/favicon_handler.h"
#include "chrome/browser/favicon/favicon_service_factory.h"
#include "chrome/browser/favicon/favicon_util.h"
#include "chrome/browser/history/history_service.h"
#include "chrome/browser/history/history_service_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search/search.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/favicon_status.h"
#include "content/public/browser/invalidate_type.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_delegate.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/image/image_skia_rep.h"
using content::FaviconStatus;
using content::NavigationController;
using content::NavigationEntry;
using content::WebContents;
DEFINE_WEB_CONTENTS_USER_DATA_KEY(FaviconTabHelper);
FaviconTabHelper::FaviconTabHelper(WebContents* web_contents)
: content::WebContentsObserver(web_contents),
profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())),
should_fetch_icons_(true) {
favicon_handler_.reset(new FaviconHandler(profile_, this,
FaviconHandler::FAVICON));
if (chrome::kEnableTouchIcon)
touch_icon_handler_.reset(new FaviconHandler(profile_, this,
FaviconHandler::TOUCH));
}
FaviconTabHelper::~FaviconTabHelper() {
}
void FaviconTabHelper::FetchFavicon(const GURL& url) {
if (!should_fetch_icons_)
return;
favicon_handler_->FetchFavicon(url);
if (touch_icon_handler_.get())
touch_icon_handler_->FetchFavicon(url);
}
gfx::Image FaviconTabHelper::GetFavicon() const {
// Like GetTitle(), we also want to use the favicon for the last committed
// entry rather than a pending navigation entry.
const NavigationController& controller = web_contents()->GetController();
NavigationEntry* entry = controller.GetTransientEntry();
if (entry)
return entry->GetFavicon().image;
entry = controller.GetLastCommittedEntry();
if (entry)
return entry->GetFavicon().image;
return gfx::Image();
}
bool FaviconTabHelper::FaviconIsValid() const {
const NavigationController& controller = web_contents()->GetController();
NavigationEntry* entry = controller.GetTransientEntry();
if (entry)
return entry->GetFavicon().valid;
entry = controller.GetLastCommittedEntry();
if (entry)
return entry->GetFavicon().valid;
return false;
}
bool FaviconTabHelper::ShouldDisplayFavicon() {
// Always display a throbber during pending loads.
const NavigationController& controller = web_contents()->GetController();
if (controller.GetLastCommittedEntry() && controller.GetPendingEntry())
return true;
GURL url = web_contents()->GetURL();
if (url.SchemeIs(chrome::kChromeUIScheme) &&
url.host() == chrome::kChromeUINewTabHost) {
return false;
}
// No favicon on Instant New Tab Pages.
if (chrome::IsInstantNTP(web_contents()))
return false;
return true;
}
void FaviconTabHelper::SaveFavicon() {
NavigationEntry* entry = web_contents()->GetController().GetActiveEntry();
if (!entry || entry->GetURL().is_empty())
return;
// Make sure the page is in history, otherwise adding the favicon does
// nothing.
HistoryService* history = HistoryServiceFactory::GetForProfile(
profile_->GetOriginalProfile(), Profile::IMPLICIT_ACCESS);
if (!history)
return;
history->AddPageNoVisitForBookmark(entry->GetURL(), entry->GetTitle());
FaviconService* service = FaviconServiceFactory::GetForProfile(
profile_->GetOriginalProfile(), Profile::IMPLICIT_ACCESS);
if (!service)
return;
const FaviconStatus& favicon(entry->GetFavicon());
if (!favicon.valid || favicon.url.is_empty() ||
favicon.image.IsEmpty()) {
return;
}
service->SetFavicons(entry->GetURL(), favicon.url, history::FAVICON,
favicon.image);
}
NavigationEntry* FaviconTabHelper::GetActiveEntry() {
return web_contents()->GetController().GetActiveEntry();
}
int FaviconTabHelper::StartDownload(const GURL& url, int image_size) {
return web_contents()->DownloadImage(
url,
true,
image_size,
base::Bind(&FaviconTabHelper::DidDownloadFavicon,base::Unretained(this)));
}
void FaviconTabHelper::NotifyFaviconUpdated(bool icon_url_changed) {
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_FAVICON_UPDATED,
content::Source<WebContents>(web_contents()),
content::Details<bool>(&icon_url_changed));
web_contents()->NotifyNavigationStateChanged(content::INVALIDATE_TYPE_TAB);
}
void FaviconTabHelper::NavigateToPendingEntry(
const GURL& url,
NavigationController::ReloadType reload_type) {
if (reload_type != NavigationController::NO_RELOAD &&
!profile_->IsOffTheRecord()) {
FaviconService* favicon_service = FaviconServiceFactory::GetForProfile(
profile_, Profile::IMPLICIT_ACCESS);
if (favicon_service)
favicon_service->SetFaviconOutOfDateForPage(url);
}
}
void FaviconTabHelper::DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) {
// Get the favicon, either from history or request it from the net.
FetchFavicon(details.entry->GetURL());
}
void FaviconTabHelper::DidUpdateFaviconURL(
int32 page_id,
const std::vector<content::FaviconURL>& candidates) {
favicon_handler_->OnUpdateFaviconURL(page_id, candidates);
if (touch_icon_handler_.get())
touch_icon_handler_->OnUpdateFaviconURL(page_id, candidates);
}
void FaviconTabHelper::DidDownloadFavicon(
int id,
const GURL& image_url,
int requested_size,
const std::vector<SkBitmap>& bitmaps) {
favicon_handler_->OnDidDownloadFavicon(
id, image_url, requested_size, bitmaps);
if (touch_icon_handler_.get()) {
touch_icon_handler_->OnDidDownloadFavicon(
id, image_url, requested_size, bitmaps);
}
}
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