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// Copyright 2015 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 "components/favicon/ios/web_favicon_driver.h"
#include "base/bind.h"
#include "base/memory/ptr_util.h"
#include "base/threading/sequenced_worker_pool.h"
#include "components/favicon/core/favicon_url.h"
#include "components/favicon/ios/favicon_url_util.h"
#include "ios/web/public/browser_state.h"
#include "ios/web/public/favicon_status.h"
#include "ios/web/public/load_committed_details.h"
#include "ios/web/public/navigation_item.h"
#include "ios/web/public/navigation_manager.h"
#include "ios/web/public/web_state/navigation_context.h"
#include "ios/web/public/web_state/web_state.h"
#include "skia/ext/skia_utils_ios.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/image/image.h"
#if !defined(__has_feature) || !__has_feature(objc_arc)
#error "This file requires ARC support."
#endif
DEFINE_WEB_STATE_USER_DATA_KEY(favicon::WebFaviconDriver);
// Callback for the download of favicon.
using ImageDownloadCallback =
base::Callback<void(int image_id,
int http_status_code,
const GURL& image_url,
const std::vector<SkBitmap>& bitmaps,
const std::vector<gfx::Size>& sizes)>;
namespace favicon {
// static
void WebFaviconDriver::CreateForWebState(
web::WebState* web_state,
FaviconService* favicon_service,
history::HistoryService* history_service) {
if (FromWebState(web_state))
return;
web_state->SetUserData(UserDataKey(),
base::WrapUnique(new WebFaviconDriver(
web_state, favicon_service, history_service)));
}
gfx::Image WebFaviconDriver::GetFavicon() const {
web::NavigationItem* item =
web_state()->GetNavigationManager()->GetLastCommittedItem();
return item ? item->GetFavicon().image : gfx::Image();
}
bool WebFaviconDriver::FaviconIsValid() const {
web::NavigationItem* item =
web_state()->GetNavigationManager()->GetLastCommittedItem();
return item ? item->GetFavicon().valid : false;
}
GURL WebFaviconDriver::GetActiveURL() {
web::NavigationItem* item =
web_state()->GetNavigationManager()->GetVisibleItem();
return item ? item->GetURL() : GURL();
}
int WebFaviconDriver::DownloadImage(const GURL& url,
int max_image_size,
ImageDownloadCallback callback) {
static int downloaded_image_count = 0;
int local_download_id = ++downloaded_image_count;
GURL local_url(url);
image_fetcher::IOSImageDataFetcherCallback local_callback =
^(NSData* data, const image_fetcher::RequestMetadata& metadata) {
if (metadata.http_response_code ==
image_fetcher::RequestMetadata::RESPONSE_CODE_INVALID)
return;
std::vector<SkBitmap> frames;
std::vector<gfx::Size> sizes;
if (data) {
frames = skia::ImageDataToSkBitmaps(data);
for (const auto& frame : frames) {
sizes.push_back(gfx::Size(frame.width(), frame.height()));
}
}
callback.Run(local_download_id, metadata.http_response_code, local_url,
frames, sizes);
};
image_fetcher_.FetchImageDataWebpDecoded(url, local_callback);
return downloaded_image_count;
}
void WebFaviconDriver::DownloadManifest(const GURL& url,
ManifestDownloadCallback callback) {
NOTREACHED();
}
bool WebFaviconDriver::IsOffTheRecord() {
DCHECK(web_state());
return web_state()->GetBrowserState()->IsOffTheRecord();
}
void WebFaviconDriver::OnFaviconUpdated(
const GURL& page_url,
FaviconDriverObserver::NotificationIconType notification_icon_type,
const GURL& icon_url,
bool icon_url_changed,
const gfx::Image& image) {
// Check whether the active URL has changed since FetchFavicon() was called.
// On iOS, the active URL can change between calls to FetchFavicon(). For
// instance, FetchFavicon() is not synchronously called when the active URL
// changes as a result of CRWSessionController::goToEntry().
if (GetActiveURL() != page_url && !page_url.is_empty()) {
return;
}
web::NavigationItem* item =
web_state()->GetNavigationManager()->GetVisibleItem();
DCHECK(item);
web::FaviconStatus& favicon_status = item->GetFavicon();
favicon_status.valid = true;
favicon_status.image = image;
NotifyFaviconUpdatedObservers(notification_icon_type, icon_url,
icon_url_changed, image);
}
WebFaviconDriver::WebFaviconDriver(web::WebState* web_state,
FaviconService* favicon_service,
history::HistoryService* history_service)
: web::WebStateObserver(web_state),
FaviconDriverImpl(favicon_service, history_service),
image_fetcher_(web_state->GetBrowserState()->GetRequestContext()) {}
WebFaviconDriver::~WebFaviconDriver() {
}
void WebFaviconDriver::DidStartNavigation(
web::NavigationContext* navigation_context) {
SetFaviconOutOfDateForPage(navigation_context->GetUrl(),
/*force_reload=*/false);
}
void WebFaviconDriver::DidFinishNavigation(
web::NavigationContext* navigation_context) {
if (navigation_context->GetError())
return;
// Fetch the favicon for the new URL.
FetchFavicon(navigation_context->GetUrl(),
navigation_context->IsSameDocument());
if (navigation_context->IsSameDocument()) {
if (!candidates_.empty()) {
FaviconUrlUpdatedInternal(candidates_);
}
} else {
candidates_.clear();
}
}
void WebFaviconDriver::FaviconUrlUpdated(
const std::vector<web::FaviconURL>& candidates) {
DCHECK(!candidates.empty());
candidates_ = FaviconURLsFromWebFaviconURLs(candidates);
FaviconUrlUpdatedInternal(candidates_);
}
void WebFaviconDriver::FaviconUrlUpdatedInternal(
const std::vector<favicon::FaviconURL>& candidates) {
OnUpdateCandidates(GetActiveURL(), candidates, GURL());
}
} // namespace favicon
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