Allow platform apps to respond to Web Intents

chrome/browser/extensions/web_intent_callbacks.cc

+// Copyright (c) 2012 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 "base/stringprintf.h"
+#include "chrome/browser/extensions/web_intent_callbacks.h"
+#include "chrome/browser/profiles/profile_dependency_manager.h"
+#include "content/public/browser/web_intents_dispatcher.h"
+
+WebIntentCallbacks::WebIntentCallbacks() {}
+
+WebIntentCallbacks::~WebIntentCallbacks() {}
+
+// static
+WebIntentCallbacks* WebIntentCallbacks::Get(Profile* profile) {
+  return Factory::GetForProfile(profile);
+}
+
+std::string WebIntentCallbacks::RegisterCallback(
+    content::WebIntentsDispatcher* dispatcher) {
+  std::string key = StringPrintf("key_%d", last_id_++);
+
+  // TODO(thorogood): cleanup task, perhaps we can watch renderer threads.
+  pending_[key] = dispatcher;
+  return key;
+}
+
+content::WebIntentsDispatcher* WebIntentCallbacks::RetrieveCallback(
+    std::string key) {
+  if (key.empty() || !pending_.count(key))
+    return NULL;
+
+  content::WebIntentsDispatcher* dispatcher = pending_[key];
+  pending_.erase(key);
+  return dispatcher;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Factory boilerplate
+
+// static
+WebIntentCallbacks* WebIntentCallbacks::Factory::GetForProfile(
+    Profile* profile) {
+  return static_cast<WebIntentCallbacks*>(
+      GetInstance()->GetServiceForProfile(profile, true));
+}
+
+WebIntentCallbacks::Factory* WebIntentCallbacks::Factory::GetInstance() {
+  return Singleton<WebIntentCallbacks::Factory>::get();
+}
+
+WebIntentCallbacks::Factory::Factory()
+    : ProfileKeyedServiceFactory("WebIntentCallbacks",
+                                 ProfileDependencyManager::GetInstance()) {
+}
+
+WebIntentCallbacks::Factory::~Factory() {
+}
+
+ProfileKeyedService* WebIntentCallbacks::Factory::BuildServiceInstanceFor(
+    Profile* profile) const {
+  return new WebIntentCallbacks();
+}