/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "web/WebHelperPluginImpl.h"

#include "core/html/HTMLObjectElement.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/FrameLoaderClient.h"
#include "public/web/WebPlugin.h"
#include "web/WebLocalFrameImpl.h"
#include "web/WebPluginContainerImpl.h"

namespace blink {

DEFINE_TYPE_CASTS(WebHelperPluginImpl, WebHelperPlugin, plugin, true, true);

WebHelperPlugin* WebHelperPlugin::create(const WebString& pluginType,
                                         WebLocalFrame* frame) {
  WebHelperPluginUniquePtr plugin(new WebHelperPluginImpl());
  if (!toWebHelperPluginImpl(plugin.get())
           ->initialize(pluginType, toWebLocalFrameImpl(frame)))
    return 0;
  return plugin.release();
}

WebHelperPluginImpl::WebHelperPluginImpl()
    : m_destructionTimer(this, &WebHelperPluginImpl::reallyDestroy) {}

bool WebHelperPluginImpl::initialize(const String& pluginType,
                                     WebLocalFrameImpl* frame) {
  DCHECK(!m_objectElement && !m_pluginContainer);
  if (!frame->frame()->loader().client())
    return false;

  m_objectElement =
      HTMLObjectElement::create(*frame->frame()->document(), 0, false);
  Vector<String> attributeNames;
  Vector<String> attributeValues;
  DCHECK(frame->frame()->document()->url().isValid());
  m_pluginContainer =
      toWebPluginContainerImpl(frame->frame()->loader().client()->createPlugin(
          m_objectElement.get(), frame->frame()->document()->url(),
          attributeNames, attributeValues, pluginType, false,
          FrameLoaderClient::AllowDetachedPlugin));

  if (!m_pluginContainer)
    return false;

  // Getting a placeholder plugin is also failure, since it's not the plugin the
  // caller needed.
  return !getPlugin()->isPlaceholder();
}

void WebHelperPluginImpl::reallyDestroy(TimerBase*) {
  if (m_pluginContainer)
    m_pluginContainer->dispose();
  delete this;
}

void WebHelperPluginImpl::destroy() {
  // Defer deletion so we don't do too much work when called via
  // stopActiveDOMObjects().
  // FIXME: It's not clear why we still need this. The original code held a
  // Page and a WebFrame, and destroying it would cause JavaScript triggered by
  // frame detach to run, which isn't allowed inside stopActiveDOMObjects().
  // Removing this causes one Chrome test to fail with a timeout.
  m_destructionTimer.startOneShot(0, BLINK_FROM_HERE);
}

WebPlugin* WebHelperPluginImpl::getPlugin() {
  DCHECK(m_pluginContainer);
  DCHECK(m_pluginContainer->plugin());
  return m_pluginContainer->plugin();
}

}  // namespace blink