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Unified Diff: chrome/browser/search/suggestions/image_fetcher_impl.cc

Issue 543753002: [Suggestions] Move ImageManager to the component (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fixes Created 6 years, 3 months ago
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Index: chrome/browser/search/suggestions/image_fetcher_impl.cc
diff --git a/chrome/browser/search/suggestions/image_fetcher_impl.cc b/chrome/browser/search/suggestions/image_fetcher_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..949f6d30028e4096040759d32b1d83ee6b644f7a
--- /dev/null
+++ b/chrome/browser/search/suggestions/image_fetcher_impl.cc
@@ -0,0 +1,82 @@
+// Copyright 2014 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/search/suggestions/image_fetcher_impl.h"
+
+#include <string>
+
+#include "content/public/browser/browser_thread.h"
+#include "net/base/load_flags.h"
+#include "net/url_request/url_request_context_getter.h"
+
+namespace suggestions {
+
+ImageFetcherImpl::ImageFetcherImpl(
+ net::URLRequestContextGetter* url_request_context)
+ : url_request_context_(url_request_context) {}
+
+ImageFetcherImpl::~ImageFetcherImpl() {}
+
+ImageFetcherImpl::ImageRequest::ImageRequest() : fetcher(NULL) {}
+
+ImageFetcherImpl::ImageRequest::ImageRequest(chrome::BitmapFetcher* f)
+ : fetcher(f) {}
+
+ImageFetcherImpl::ImageRequest::~ImageRequest() { delete fetcher; }
+
+void ImageFetcherImpl::SetImageFetcherDelegate(ImageFetcherDelegate* delegate) {
+ DCHECK(delegate);
+ delegate_ = delegate;
+}
+
+void ImageFetcherImpl::StartOrQueueNetworkRequest(
+ const GURL& url, const GURL& image_url,
+ base::Callback<void(const GURL&, const SkBitmap*)> callback) {
+ // Before starting to fetch the image. Look for a request in progress for
+ // |image_url|, and queue if appropriate.
+ ImageRequestMap::iterator it = pending_net_requests_.find(image_url);
+ if (it == pending_net_requests_.end()) {
+ // |image_url| is not being fetched, so create a request and initiate
+ // the fetch.
+ ImageRequest request(new chrome::BitmapFetcher(image_url, this));
+ request.url = url;
+ request.callbacks.push_back(callback);
+ request.fetcher->Start(
+ url_request_context_, std::string(),
+ net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE,
+ net::LOAD_NORMAL);
+ pending_net_requests_[image_url].swap(&request);
+ } else {
+ // Request in progress. Register as an interested callback.
+ it->second.callbacks.push_back(callback);
+ }
+}
+
+void ImageFetcherImpl::OnFetchComplete(const GURL image_url,
+ const SkBitmap* bitmap) {
+ DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
+ ImageRequestMap::iterator image_iter = pending_net_requests_.find(image_url);
+ DCHECK(image_iter != pending_net_requests_.end());
+
+ ImageRequest* request = &image_iter->second;
+
+ // Here |bitmap| could be NULL or a pointer to a bitmap which is owned by the
+ // BitmapFetcher and which ceases to exist after this function. Pass the
+ // un-owned pointer to the registered callbacks.
+ for (CallbackVector::iterator callback_iter = request->callbacks.begin();
+ callback_iter != request->callbacks.end(); ++callback_iter) {
+ callback_iter->Run(request->url, bitmap);
+ }
+
+ // Inform the ImageFetcherDelegate.
+ if (delegate_) {
+ delegate_->OnImageFetched(request->url, bitmap);
+ }
+
+ // Erase the completed ImageRequest.
+ pending_net_requests_.erase(image_iter);
+}
+
+} // namespace suggestions

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