Allow platform apps to respond to Web Intents

chrome/browser/extensions/api/app/app_api.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 "chrome/browser/extensions/api/app/app_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/app_notification_manager.h"
 #include "chrome/browser/extensions/event_router.h"
 #include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/web_intent_callbacks.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "content/public/browser/notification_service.h"
+#include "content/public/browser/web_intents_dispatcher.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/glue/web_intent_data.h"
 
 namespace {
 
 const char kBodyTextKey[] = "bodyText";
 const char kExtensionIdKey[] = "extensionId";
 const char kLinkTextKey[] = "linkText";
 const char kLinkUrlKey[] = "linkUrl";
 const char kTitleKey[] = "title";
+const char kIntentIdKey[] = "intentId";
+const char kIntentSuccessKey[] = "success";
+const char kIntentDataKey[] = "data";
 
 const char kInvalidExtensionIdError[] =
     "Invalid extension id";
 const char kMissingLinkTextError[] =
     "You must specify linkText if you use linkUrl";
+const char kCallbackNotFoundError[] =
+    "WebIntent callback not found; perhaps already responded to";
 const char kOnLaunchedEvent[] = "experimental.app.onLaunched";
-
 }  // anonymous namespace
 
 namespace extensions {
 
 bool AppNotifyFunction::RunImpl() {
   if (!include_incognito() && profile_->IsOffTheRecord()) {
     error_ = extension_misc::kAppNotificationsIncognitoError;
     return false;
   }
 
@@ skipping 64 matching lines @@
       return false;
     }
   }
 
   AppNotificationManager* manager =
       profile()->GetExtensionService()->app_notification_manager();
   manager->ClearAll(id);
   return true;
 }
 
+bool PostIntentResponseFunction::RunImpl() {
+  DictionaryValue* details;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &details));
+  EXTENSION_FUNCTION_VALIDATE(details != NULL);
+
+  std::string intent_id;
+  if (details->HasKey(kIntentIdKey))

[koz (OOO until 15th September), 2012/08/08 04:47:30]

Is this not always present?

[thorogood, 2012/08/08 07:15:49]

I've removed the HasKey checks, since yes, EXTENSION_FUNCTION_VALIDATE should
fail if the keys don't exist.

+    EXTENSION_FUNCTION_VALIDATE(details->GetString(kIntentIdKey, &intent_id));
+
+  WebIntentCallbacks* callbacks = WebIntentCallbacks::Get(profile());
+  content::WebIntentsDispatcher* intents_dispatcher =
+      callbacks->RetrieveCallback(intent_id);
+  if (!intents_dispatcher) {
+    error_ = kCallbackNotFoundError;
+    return false;
+  }
+
+  webkit_glue::WebIntentReplyType reply_type =
+      webkit_glue::WEB_INTENT_REPLY_FAILURE;
+  if (details->HasKey(kIntentSuccessKey)) {
+    bool success;
+    EXTENSION_FUNCTION_VALIDATE(
+          details->GetBoolean(kIntentSuccessKey, &success));
+    if (success)
+      reply_type = webkit_glue::WEB_INTENT_REPLY_SUCCESS;
+  }
+
+  Value* result;

[koz (OOO until 15th September), 2012/08/08 04:47:30]

Initialize to NULL.

[thorogood, 2012/08/08 07:15:49]

No longer relevant, as now I'm using a std::string containing pre-serialized
data, so that the data flows through properly (this is a value generated from
"WebSerializedScriptValue::serialize", which is what SendReplyMessage expects)/

+  if (details->HasKey(kIntentDataKey))
+    EXTENSION_FUNCTION_VALIDATE(details->Get(kIntentDataKey, &result));
+  else
+    result = Value::CreateNullValue(); // TODO: need to free this
+  std::string json_args;
+  base::JSONWriter::Write(result, &json_args);
+
+  LOG(INFO) << "PostIntentResponseFunction(), intent_id=" << intent_id
+      << ", success=" << (reply_type == webkit_glue::WEB_INTENT_REPLY_SUCCESS)
+      << ", data=``" << json_args << "``";
+
+  // NOTE: The original intent callback only seems to receive "NULL".
+  intents_dispatcher->SendReplyMessage(reply_type, UTF8ToUTF16(json_args));
+  return true;
+}
+
 // static.
 void AppEventRouter::DispatchOnLaunchedEvent(
     Profile* profile, const Extension* extension) {
   profile->GetExtensionEventRouter()->DispatchEventToExtension(
       extension->id(), kOnLaunchedEvent, "[]", NULL, GURL());
 }
 
 // static.
 void AppEventRouter::DispatchOnLaunchedEventWithFileEntry(
-    Profile* profile, const Extension* extension, const string16& action,
-    const std::string& file_system_id, const std::string& base_name) {
+    Profile* profile, const Extension* extension,
+    const string16& action, const std::string& file_system_id,
+    const std::string& base_name) {
   ListValue args;
   DictionaryValue* launch_data = new DictionaryValue();
   DictionaryValue* intent = new DictionaryValue();
   intent->SetString("action", UTF16ToUTF8(action));
   intent->SetString("type", "chrome-extension://fileentry");
   launch_data->Set("intent", intent);
   args.Append(launch_data);
   DictionaryValue* intent_data = new DictionaryValue();
   intent_data->SetString("format", "fileEntry");
   intent_data->SetString("fileSystemId", file_system_id);
   intent_data->SetString("baseName", base_name);
   args.Append(intent_data);
   std::string json_args;
   base::JSONWriter::Write(&args, &json_args);
   profile->GetExtensionEventRouter()->DispatchEventToExtension(
       extension->id(), kOnLaunchedEvent, json_args, NULL, GURL());
 }
 
 // static.
 void AppEventRouter::DispatchOnLaunchedEventWithWebIntent(
     Profile* profile, const Extension* extension,
-    const webkit_glue::WebIntentData web_intent_data) {
+    content::WebIntentsDispatcher* intents_dispatcher) {
+  webkit_glue::WebIntentData web_intent_data = intents_dispatcher->GetIntent();
+  WebIntentCallbacks* callbacks = WebIntentCallbacks::Get(profile);
+  std::string intent_id = callbacks->RegisterCallback(intents_dispatcher);
+
   ListValue args;
+  args.Append(base::Value::CreateStringValue(intent_id));
   DictionaryValue* launch_data = new DictionaryValue();
   DictionaryValue* intent = new DictionaryValue();
   intent->SetString("action", UTF16ToUTF8(web_intent_data.action));
   intent->SetString("type", UTF16ToUTF8(web_intent_data.type));
   launch_data->Set("intent", intent);
   args.Append(launch_data);
   DictionaryValue* intent_data;
   switch (web_intent_data.data_type) {
     case webkit_glue::WebIntentData::SERIALIZED:
       intent_data = new DictionaryValue();
@@ skipping 16 matching lines @@
       NOTREACHED();
       break;
   }
   std::string json_args;
   base::JSONWriter::Write(&args, &json_args);
   profile->GetExtensionEventRouter()->DispatchEventToExtension(
       extension->id(), kOnLaunchedEvent, json_args, NULL, GURL());
 }
 
 }  // namespace extensions