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      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 using namespace WebCore;
     42 
     43 namespace blink {
     44 
     45 DEFINE_TYPE_CASTS(WebHelperPluginImpl, WebHelperPlugin, plugin, true, true);
     46 
     47 WebHelperPlugin* WebHelperPlugin::create(const WebString& pluginType, WebLocalFrame* frame)
     48 {
     49     OwnPtr<WebHelperPlugin> plugin = adoptPtr<WebHelperPlugin>(new WebHelperPluginImpl());
     50     if (!toWebHelperPluginImpl(plugin.get())->initialize(pluginType, toWebLocalFrameImpl(frame)))
     51         return 0;
     52     return plugin.leakPtr();
     53 }
     54 
     55 WebHelperPluginImpl::WebHelperPluginImpl()
     56     : m_destructionTimer(this, &WebHelperPluginImpl::reallyDestroy)
     57 {
     58 }
     59 
     60 WebHelperPluginImpl::~WebHelperPluginImpl()
     61 {
     62 }
     63 
     64 bool WebHelperPluginImpl::initialize(const String& pluginType, WebLocalFrameImpl* frame)
     65 {
     66     ASSERT(!m_objectElement && !m_pluginContainer);
     67     if (!frame->frame()->loader().client())
     68         return false;
     69 
     70     m_objectElement = HTMLObjectElement::create(*frame->frame()->document(), 0, false);
     71     Vector<String> attributeNames;
     72     Vector<String> attributeValues;
     73     ASSERT(frame->frame()->document()->url().isValid());
     74     m_pluginContainer = adoptRef(toWebPluginContainerImpl(frame->frame()->loader().client()->createPlugin(
     75         m_objectElement.get(),
     76         frame->frame()->document()->url(),
     77         attributeNames,
     78         attributeValues,
     79         pluginType,
     80         false,
     81         FrameLoaderClient::AllowDetachedPlugin).leakRef()));
     82 
     83     if (!m_pluginContainer)
     84         return false;
     85 
     86     // Getting a placeholder plugin is also failure, since it's not the plugin the caller needed.
     87     return !getPlugin()->isPlaceholder();
     88 }
     89 
     90 void WebHelperPluginImpl::reallyDestroy(Timer<WebHelperPluginImpl>*)
     91 {
     92     delete this;
     93 }
     94 
     95 void WebHelperPluginImpl::destroy()
     96 {
     97     // Defer deletion so we don't do too much work when called via stopActiveDOMObjects().
     98     // FIXME: It's not clear why we still need this. The original code held a Page and a
     99     // WebFrame, and destroying it would cause JavaScript triggered by frame detach to run,
    100     // which isn't allowed inside stopActiveDOMObjects(). Removing this causes one Chrome test
    101     // to fail with a timeout.
    102     m_destructionTimer.startOneShot(0, FROM_HERE);
    103 }
    104 
    105 WebPlugin* WebHelperPluginImpl::getPlugin()
    106 {
    107     ASSERT(m_pluginContainer);
    108     ASSERT(m_pluginContainer->plugin());
    109     return m_pluginContainer->plugin();
    110 }
    111 
    112 } // namespace blink
    113