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// Copyright (c) 2011 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/history/history.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/icon_messages.h"
#include "content/browser/renderer_host/render_view_host.h"
#include "content/browser/tab_contents/navigation_controller.h"
#include "content/browser/tab_contents/navigation_details.h"
#include "content/browser/tab_contents/tab_contents_delegate.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/browser/webui/web_ui.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/image/image.h"
FaviconTabHelper::FaviconTabHelper(TabContents* tab_contents)
: TabContentsObserver(tab_contents) {
favicon_handler_.reset(new FaviconHandler(tab_contents->profile(), this,
FaviconHandler::FAVICON));
if (chrome::kEnableTouchIcon)
touch_icon_handler_.reset(new FaviconHandler(tab_contents->profile(), this,
FaviconHandler::TOUCH));
}
FaviconTabHelper::~FaviconTabHelper() {
}
void FaviconTabHelper::FetchFavicon(const GURL& url) {
favicon_handler_->FetchFavicon(url);
if (touch_icon_handler_.get())
touch_icon_handler_->FetchFavicon(url);
}
SkBitmap 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 = tab_contents()->controller();
NavigationEntry* entry = controller.GetTransientEntry();
if (entry)
return entry->favicon().bitmap();
entry = controller.GetLastCommittedEntry();
if (entry)
return entry->favicon().bitmap();
return SkBitmap();
}
bool FaviconTabHelper::FaviconIsValid() const {
const NavigationController& controller = tab_contents()->controller();
NavigationEntry* entry = controller.GetTransientEntry();
if (entry)
return entry->favicon().is_valid();
entry = controller.GetLastCommittedEntry();
if (entry)
return entry->favicon().is_valid();
return false;
}
bool FaviconTabHelper::ShouldDisplayFavicon() {
// Always display a throbber during pending loads.
const NavigationController& controller = tab_contents()->controller();
if (controller.GetLastCommittedEntry() && controller.pending_entry())
return true;
WebUI* web_ui = tab_contents()->GetWebUIForCurrentState();
if (web_ui)
return !web_ui->hide_favicon();
return true;
}
void FaviconTabHelper::SaveFavicon() {
NavigationEntry* entry = tab_contents()->controller().GetActiveEntry();
if (!entry || entry->url().is_empty())
return;
// Make sure the page is in history, otherwise adding the favicon does
// nothing.
HistoryService* history = tab_contents()->profile()->
GetOriginalProfile()->GetHistoryService(Profile::IMPLICIT_ACCESS);
if (!history)
return;
history->AddPageNoVisitForBookmark(entry->url());
FaviconService* service = tab_contents()->profile()->
GetOriginalProfile()->GetFaviconService(Profile::IMPLICIT_ACCESS);
if (!service)
return;
const NavigationEntry::FaviconStatus& favicon(entry->favicon());
if (!favicon.is_valid() || favicon.url().is_empty() ||
favicon.bitmap().empty()) {
return;
}
std::vector<unsigned char> image_data;
gfx::PNGCodec::EncodeBGRASkBitmap(favicon.bitmap(), false, &image_data);
service->SetFavicon(
entry->url(), favicon.url(), image_data, history::FAVICON);
}
int FaviconTabHelper::DownloadImage(const GURL& image_url,
int image_size,
history::IconType icon_type,
ImageDownloadCallback* callback) {
if (icon_type == history::FAVICON)
return favicon_handler_->DownloadImage(image_url, image_size, icon_type,
callback);
else if (touch_icon_handler_.get())
return touch_icon_handler_->DownloadImage(image_url, image_size, icon_type,
callback);
return 0;
}
void FaviconTabHelper::OnUpdateFaviconURL(
int32 page_id,
const std::vector<FaviconURL>& candidates) {
favicon_handler_->OnUpdateFaviconURL(page_id, candidates);
if (touch_icon_handler_.get())
touch_icon_handler_->OnUpdateFaviconURL(page_id, candidates);
}
NavigationEntry* FaviconTabHelper::GetActiveEntry() {
return tab_contents()->controller().GetActiveEntry();
}
void FaviconTabHelper::StartDownload(int id, const GURL& url, int image_size) {
RenderViewHost* host = tab_contents()->render_view_host();
host->Send(new IconMsg_DownloadFavicon(
host->routing_id(), id, url, image_size));
}
void FaviconTabHelper::NotifyFaviconUpdated() {
tab_contents()->NotifyNavigationStateChanged(TabContents::INVALIDATE_TAB);
}
void FaviconTabHelper::NavigateToPendingEntry(
const GURL& url,
NavigationController::ReloadType reload_type) {
if (reload_type != NavigationController::NO_RELOAD &&
!tab_contents()->profile()->IsOffTheRecord()) {
FaviconService* favicon_service =
tab_contents()->profile()->GetFaviconService(Profile::IMPLICIT_ACCESS);
if (favicon_service)
favicon_service->SetFaviconOutOfDateForPage(url);
}
}
void FaviconTabHelper::DidNavigateMainFramePostCommit(
const content::LoadCommittedDetails& details,
const ViewHostMsg_FrameNavigate_Params& params) {
// Get the favicon, either from history or request it from the net.
FetchFavicon(details.entry->url());
}
bool FaviconTabHelper::OnMessageReceived(const IPC::Message& message) {
bool message_handled = true;
IPC_BEGIN_MESSAGE_MAP(FaviconTabHelper, message)
IPC_MESSAGE_HANDLER(IconHostMsg_DidDownloadFavicon, OnDidDownloadFavicon)
IPC_MESSAGE_HANDLER(IconHostMsg_UpdateFaviconURL, OnUpdateFaviconURL)
IPC_MESSAGE_UNHANDLED(message_handled = false)
IPC_END_MESSAGE_MAP()
return message_handled;
}
void FaviconTabHelper::OnDidDownloadFavicon(int id,
const GURL& image_url,
bool errored,
const SkBitmap& image) {
gfx::Image favicon(new SkBitmap(image));
favicon_handler_->OnDidDownloadFavicon(id, image_url, errored, favicon);
if (touch_icon_handler_.get())
touch_icon_handler_->OnDidDownloadFavicon(id, image_url, errored, favicon);
}
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