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// Copyright (c) 2013 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 "android_webview/browser/icon_helper.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/hash.h"
#include "base/logging.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/favicon_url.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/geometry/size.h"
using content::BrowserThread;
using content::WebContents;
namespace android_webview {
IconHelper::IconHelper(WebContents* web_contents)
: WebContentsObserver(web_contents),
listener_(NULL),
missing_favicon_urls_() {
}
IconHelper::~IconHelper() {
}
void IconHelper::SetListener(Listener* listener) {
listener_ = listener;
}
void IconHelper::DownloadFaviconCallback(
int id,
int http_status_code,
const GURL& image_url,
const std::vector<SkBitmap>& bitmaps,
const std::vector<gfx::Size>& original_bitmap_sizes) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (http_status_code == 404) {
MarkUnableToDownloadFavicon(image_url);
return;
}
if (bitmaps.size() == 0) {
return;
}
// We can protentially have multiple frames of the icon
// in different sizes. We need more fine grain API spec
// to let clients pick out the frame they want.
// TODO(acleung): Pick the best icon to return based on size.
if (listener_)
listener_->OnReceivedIcon(image_url, bitmaps[0]);
}
void IconHelper::DidUpdateFaviconURL(
const std::vector<content::FaviconURL>& candidates) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
for (std::vector<content::FaviconURL>::const_iterator i = candidates.begin();
i != candidates.end(); ++i) {
if (!i->icon_url.is_valid())
continue;
switch(i->icon_type) {
case content::FaviconURL::FAVICON:
if ((listener_ && !listener_->ShouldDownloadFavicon(i->icon_url)) ||
WasUnableToDownloadFavicon(i->icon_url)) {
break;
}
web_contents()->DownloadImage(i->icon_url,
true, // Is a favicon
0, // No maximum size
false, // Normal cache policy
base::Bind(
&IconHelper::DownloadFaviconCallback, base::Unretained(this)));
break;
case content::FaviconURL::TOUCH_ICON:
if (listener_)
listener_->OnReceivedTouchIconUrl(i->icon_url.spec(), false);
break;
case content::FaviconURL::TOUCH_PRECOMPOSED_ICON:
if (listener_)
listener_->OnReceivedTouchIconUrl(i->icon_url.spec(), true);
break;
case content::FaviconURL::INVALID_ICON:
// Silently ignore it. Only trigger a callback on valid icons.
break;
default:
NOTREACHED();
break;
}
}
}
void IconHelper::DidStartNavigationToPendingEntry(
const GURL& url,
content::NavigationController::ReloadType reload_type) {
if (reload_type == content::NavigationController::RELOAD_IGNORING_CACHE)
ClearUnableToDownloadFavicons();
}
void IconHelper::MarkUnableToDownloadFavicon(const GURL& icon_url) {
MissingFaviconURLHash url_hash = base::Hash(icon_url.spec());
missing_favicon_urls_.insert(url_hash);
}
bool IconHelper::WasUnableToDownloadFavicon(const GURL& icon_url) const {
MissingFaviconURLHash url_hash = base::Hash(icon_url.spec());
return missing_favicon_urls_.find(url_hash) != missing_favicon_urls_.end();
}
void IconHelper::ClearUnableToDownloadFavicons() {
missing_favicon_urls_.clear();
}
} // namespace android_webview
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