third_party/WebKit/Source/web/WebHelperPluginImpl.cpp

   1 /*
   2  * Copyright (C) 2012 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "web/WebHelperPluginImpl.h"
  33
  34 #include "core/html/HTMLObjectElement.h"
  35 #include "core/loader/FrameLoader.h"
  36 #include "core/loader/FrameLoaderClient.h"
  37 #include "public/web/WebPlugin.h"
  38 #include "web/WebLocalFrameImpl.h"
  39 #include "web/WebPluginContainerImpl.h"
  40
  41 namespace blink {
  42
  43 DEFINE_TYPE_CASTS(WebHelperPluginImpl, WebHelperPlugin, plugin, true, true);
  44
  45 WebHelperPlugin* WebHelperPlugin::create(const WebString& pluginType, WebLocalFrame* frame)
  46 {
  47     OwnPtr<WebHelperPlugin> plugin = adoptPtr<WebHelperPlugin>(new WebHelperPluginImpl());
  48     if (!toWebHelperPluginImpl(plugin.get())->initialize(pluginType, toWebLocalFrameImpl(frame)))
  49         return 0;
  50     return plugin.leakPtr();
  51 }
  52
  53 WebHelperPluginImpl::WebHelperPluginImpl()
  54     : m_destructionTimer(this, &WebHelperPluginImpl::reallyDestroy)
  55 {
  56 }
  57
  58 WebHelperPluginImpl::~WebHelperPluginImpl()
  59 {
  60 #if ENABLE(OILPAN)
  61     // FIXME: Oilpan: it is potentially problematic to support plugin
  62     // disposal during an Oilpan GC. If it happens, we need to know
  63     // and evaluate possible ways to handle it.
  64     ASSERT(!ThreadState::current()->sweepForbidden());
  65     if (m_pluginContainer)
  66         m_pluginContainer->dispose();
  67 #endif
  68 }
  69
  70 bool WebHelperPluginImpl::initialize(const String& pluginType, WebLocalFrameImpl* frame)
  71 {
  72     ASSERT(!m_objectElement && !m_pluginContainer);
  73     if (!frame->frame()->loader().client())
  74         return false;
  75
  76     m_objectElement = HTMLObjectElement::create(*frame->frame()->document(), 0, false);
  77     Vector<String> attributeNames;
  78     Vector<String> attributeValues;
  79     ASSERT(frame->frame()->document()->url().isValid());
  80     m_pluginContainer = adoptRefWillBeNoop(toWebPluginContainerImpl(frame->frame()->loader().client()->createPlugin(
  81         m_objectElement.get(),
  82         frame->frame()->document()->url(),
  83         attributeNames,
  84         attributeValues,
  85         pluginType,
  86         false,
  87         FrameLoaderClient::AllowDetachedPlugin).leakRef()));
  88
  89     if (!m_pluginContainer)
  90         return false;
  91
  92     // Getting a placeholder plugin is also failure, since it's not the plugin the caller needed.
  93     return !getPlugin()->isPlaceholder();
  94 }
  95
  96 void WebHelperPluginImpl::reallyDestroy(Timer<WebHelperPluginImpl>*)
  97 {
  98     delete this;
  99 }
 100
 101 void WebHelperPluginImpl::destroy()
 102 {
 103     // Defer deletion so we don't do too much work when called via stopActiveDOMObjects().
 104     // FIXME: It's not clear why we still need this. The original code held a Page and a
 105     // WebFrame, and destroying it would cause JavaScript triggered by frame detach to run,
 106     // which isn't allowed inside stopActiveDOMObjects(). Removing this causes one Chrome test
 107     // to fail with a timeout.
 108     m_destructionTimer.startOneShot(0, FROM_HERE);
 109 }
 110
 111 WebPlugin* WebHelperPluginImpl::getPlugin()
 112 {
 113     ASSERT(m_pluginContainer);
 114     ASSERT(m_pluginContainer->plugin());
 115     return m_pluginContainer->plugin();
 116 }
 117
 118 } // namespace blink