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// 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 "content/browser/intents/web_intents_dispatcher_impl.h"

#include "content/browser/intents/intent_injector.h"
#include "content/browser/intents/internal_web_intents_dispatcher.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/common/intents_messages.h"
#include "webkit/glue/web_intent_data.h"
#include "webkit/glue/web_intent_reply_data.h"

namespace content {

WebIntentsDispatcher* WebIntentsDispatcher::Create(
    const webkit_glue::WebIntentData& data) {
  return new InternalWebIntentsDispatcher(data);
}

WebIntentsDispatcherImpl::WebIntentsDispatcherImpl(
    WebContents* source_contents,
    const webkit_glue::WebIntentData& intent,
    int intent_id)
    : WebContentsObserver(source_contents),
      intent_(intent),
      intent_id_(intent_id),
      intent_injector_(NULL) {
  // Ensure that WebIntentData sent from a renderer process
  // carries the right payload type and no extraneous data.
  intent_.blob_file = FilePath();
  intent_.blob_length = 0;
  intent_.root_name = "";
  intent_.filesystem_id = "";
  intent_.data_type = webkit_glue::WebIntentData::SERIALIZED;
}

WebIntentsDispatcherImpl::~WebIntentsDispatcherImpl() {}

const webkit_glue::WebIntentData& WebIntentsDispatcherImpl::GetIntent() {
  return intent_;
}

void WebIntentsDispatcherImpl::DispatchIntent(
    WebContents* destination_contents) {
  DCHECK(!intent_injector_);
  intent_injector_ = new IntentInjector(destination_contents);
  intent_injector_->SetIntent(this, intent_);
}

void WebIntentsDispatcherImpl::ResetDispatch() {
  if (intent_injector_) {
    intent_injector_->Abandon();
    intent_injector_ = NULL;
  }
}

void WebIntentsDispatcherImpl::SendReplyMessage(
    webkit_glue::WebIntentReplyType reply_type,
    const string16& data) {
  SendReply(webkit_glue::WebIntentReply(reply_type, data));
}

void WebIntentsDispatcherImpl::SendReply(
    const webkit_glue::WebIntentReply& reply) {
  intent_injector_ = NULL;

  // If this intent is attached to a WebContents, we dispatch the request back
  // to the renderer. Browser process initiated intents are not
  // associated with a WebContents.
  if (web_contents()) {
    Send(new IntentsMsg_WebIntentReply(
        routing_id(), reply, intent_id_));
  }

  for (size_t i = 0; i < reply_notifiers_.size(); ++i) {
    if (!reply_notifiers_[i].is_null())
      reply_notifiers_[i].Run(reply.type);
  }

  delete this;
}

void WebIntentsDispatcherImpl::RegisterReplyNotification(
    const WebIntentsDispatcher::ReplyNotification& closure) {
  reply_notifiers_.push_back(closure);
}

void WebIntentsDispatcherImpl::WebContentsDestroyed(WebContents* contents) {
  if (intent_injector_)
    intent_injector_->SourceWebContentsDestroyed(contents);

  intent_injector_ = NULL;
}

}  // namespace content