| // 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 |