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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/check_op.h"
- #include "base/hash/hash.h"
- #include "base/notreached.h"
- #include "components/favicon_base/select_favicon_frames.h"
- #include "content/public/browser/browser_thread.h"
- #include "content/public/browser/navigation_handle.h"
- #include "content/public/browser/web_contents.h"
- #include "third_party/blink/public/mojom/favicon/favicon_url.mojom.h"
- #include "third_party/skia/include/core/SkBitmap.h"
- #include "ui/gfx/geometry/size.h"
- using content::BrowserThread;
- using content::WebContents;
- namespace android_webview {
- namespace {
- const int kLargestIconSize = 192;
- } // namespace
- IconHelper::IconHelper(WebContents* web_contents)
- : WebContentsObserver(web_contents),
- listener_(nullptr),
- 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.
- if (listener_) {
- std::vector<size_t> best_indices;
- SelectFaviconFrameIndices(original_bitmap_sizes,
- std::vector<int>(1U, kLargestIconSize),
- &best_indices, nullptr);
- listener_->OnReceivedIcon(
- image_url,
- bitmaps[best_indices.size() == 0 ? 0 : best_indices.front()]);
- }
- }
- void IconHelper::DidUpdateFaviconURL(
- content::RenderFrameHost* render_frame_host,
- const std::vector<blink::mojom::FaviconURLPtr>& candidates) {
- DCHECK_CURRENTLY_ON(BrowserThread::UI);
- for (const auto& candidate : candidates) {
- if (!candidate->icon_url.is_valid())
- continue;
- switch (candidate->icon_type) {
- case blink::mojom::FaviconIconType::kFavicon:
- if ((listener_ &&
- !listener_->ShouldDownloadFavicon(candidate->icon_url)) ||
- WasUnableToDownloadFavicon(candidate->icon_url)) {
- break;
- }
- web_contents()->DownloadImage(
- candidate->icon_url,
- true, // Is a favicon
- gfx::Size(), // No preferred size
- kLargestIconSize, // Max bitmap size
- false, // Normal cache policy
- base::BindOnce(&IconHelper::DownloadFaviconCallback,
- base::Unretained(this)));
- break;
- case blink::mojom::FaviconIconType::kTouchIcon:
- if (listener_)
- listener_->OnReceivedTouchIconUrl(candidate->icon_url.spec(), false);
- break;
- case blink::mojom::FaviconIconType::kTouchPrecomposedIcon:
- if (listener_)
- listener_->OnReceivedTouchIconUrl(candidate->icon_url.spec(), true);
- break;
- case blink::mojom::FaviconIconType::kInvalid:
- // Silently ignore it. Only trigger a callback on valid icons.
- break;
- default:
- NOTREACHED();
- break;
- }
- }
- }
- void IconHelper::DidStartNavigation(content::NavigationHandle* navigation) {
- if (navigation->IsInPrimaryMainFrame() &&
- navigation->GetReloadType() == content::ReloadType::BYPASSING_CACHE) {
- ClearUnableToDownloadFavicons();
- }
- }
- void IconHelper::MarkUnableToDownloadFavicon(const GURL& icon_url) {
- MissingFaviconURLHash url_hash = base::FastHash(icon_url.spec());
- missing_favicon_urls_.insert(url_hash);
- }
- bool IconHelper::WasUnableToDownloadFavicon(const GURL& icon_url) const {
- MissingFaviconURLHash url_hash = base::FastHash(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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