app_list: Add web store search.

chrome/browser/ui/app_list/search/webstore_provider.h

+// Copyright 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.
+
+#ifndef CHROME_BROWSER_UI_APP_LIST_SEARCH_WEBSTORE_PROVIDER_H_
+#define CHROME_BROWSER_UI_APP_LIST_SEARCH_WEBSTORE_PROVIDER_H_
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/app_list/search/search_provider.h"
+
+class Profile;
+
+namespace base {
+class DictionaryValue;
+}
+
+namespace app_list {
+
+namespace test {
+class WebstoreProviderTest;
+}
+
+class ChromeSearchResult;
+class WebstoreSearchFetcher;
+
+// WebstoreProvider fetches search results from the web store server.
+// A "Search in web store" result will be returned if the server does not
+// return any results.
+class WebstoreProvider : public SearchProvider {
+ public:
+  explicit WebstoreProvider(Profile* profile);
+  virtual ~WebstoreProvider();
+
+  // SearchProvider overrides:
+  virtual void Start(const base::string16& query) OVERRIDE;
+  virtual void Stop() OVERRIDE;
+
+ private:
+  friend class app_list::test::WebstoreProviderTest;
+
+  void OnWebstoreSearchFetched(scoped_ptr<base::DictionaryValue> json);
+  void ProcessWebstoreSearchResults(base::DictionaryValue* json);
+  scoped_ptr<ChromeSearchResult> CreateResult(
+      const base::DictionaryValue& dict);
+
+  void set_webstore_search_fetched_callback(const base::Closure& callback) {
+    webstore_search_fetched_callback_ = callback;
+  }
+
+  Profile* profile_;
+  scoped_ptr<WebstoreSearchFetcher> webstore_search_;
+  base::Closure webstore_search_fetched_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebstoreProvider);
+};
+
+}  // namespace app_list
+
+#endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_WEBSTORE_PROVIDER_H_