1/*
2 * Copyright (C) 2006, 2008 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
20 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "config.h"
26#include "PluginDocument.h"
27
28#include "DocumentLoader.h"
29#include "Frame.h"
30#include "FrameLoaderClient.h"
31#include "FrameView.h"
32#include "HTMLEmbedElement.h"
33#include "HTMLHtmlElement.h"
34#include "HTMLNames.h"
35#include "MainResourceLoader.h"
36#include "NodeList.h"
37#include "Page.h"
38#include "RawDataDocumentParser.h"
39#include "RenderEmbeddedObject.h"
40#include "Settings.h"
41
42namespace WebCore {
43
44using namespace HTMLNames;
45
46// FIXME: Share more code with MediaDocumentParser.
47class PluginDocumentParser : public RawDataDocumentParser {
48public:
49    static PassRefPtr<PluginDocumentParser> create(PluginDocument* document)
50    {
51        return adoptRef(new PluginDocumentParser(document));
52    }
53
54private:
55    PluginDocumentParser(Document* document)
56        : RawDataDocumentParser(document)
57        , m_embedElement(0)
58    {
59    }
60
61    virtual void appendBytes(DocumentWriter*, const char*, int, bool);
62
63    void createDocumentStructure();
64
65    HTMLEmbedElement* m_embedElement;
66};
67
68void PluginDocumentParser::createDocumentStructure()
69{
70    ExceptionCode ec;
71    RefPtr<Element> rootElement = document()->createElement(htmlTag, false);
72    document()->appendChild(rootElement, ec);
73#if ENABLE(OFFLINE_WEB_APPLICATIONS)
74    static_cast<HTMLHtmlElement*>(rootElement.get())->insertedByParser();
75#endif
76
77    if (document()->frame() && document()->frame()->loader())
78        document()->frame()->loader()->dispatchDocumentElementAvailable();
79
80    RefPtr<Element> body = document()->createElement(bodyTag, false);
81    body->setAttribute(marginwidthAttr, "0");
82    body->setAttribute(marginheightAttr, "0");
83    body->setAttribute(bgcolorAttr, "rgb(38,38,38)");
84
85    rootElement->appendChild(body, ec);
86
87    RefPtr<Element> embedElement = document()->createElement(embedTag, false);
88
89    m_embedElement = static_cast<HTMLEmbedElement*>(embedElement.get());
90    m_embedElement->setAttribute(widthAttr, "100%");
91    m_embedElement->setAttribute(heightAttr, "100%");
92
93    m_embedElement->setAttribute(nameAttr, "plugin");
94    m_embedElement->setAttribute(srcAttr, document()->url().string());
95
96    DocumentLoader* loader = document()->loader();
97    ASSERT(loader);
98    if (loader)
99        m_embedElement->setAttribute(typeAttr, loader->writer()->mimeType());
100
101    static_cast<PluginDocument*>(document())->setPluginNode(m_embedElement);
102
103    body->appendChild(embedElement, ec);
104}
105
106void PluginDocumentParser::appendBytes(DocumentWriter*, const char*, int, bool)
107{
108    ASSERT(!m_embedElement);
109    if (m_embedElement)
110        return;
111
112    createDocumentStructure();
113
114    Frame* frame = document()->frame();
115    if (!frame)
116        return;
117    Settings* settings = frame->settings();
118    if (!settings || !frame->loader()->subframeLoader()->allowPlugins(NotAboutToInstantiatePlugin))
119        return;
120
121    document()->updateLayout();
122
123    // Below we assume that renderer->widget() to have been created by
124    // document()->updateLayout(). However, in some cases, updateLayout() will
125    // recurse too many times and delay its post-layout tasks (such as creating
126    // the widget). Here we kick off the pending post-layout tasks so that we
127    // can synchronously redirect data to the plugin.
128    frame->view()->flushAnyPendingPostLayoutTasks();
129
130    if (RenderPart* renderer = m_embedElement->renderPart()) {
131        if (Widget* widget = renderer->widget()) {
132            frame->loader()->client()->redirectDataToPlugin(widget);
133            // In a plugin document, the main resource is the plugin. If we have a null widget, that means
134            // the loading of the plugin was cancelled, which gives us a null mainResourceLoader(), so we
135            // need to have this call in a null check of the widget or of mainResourceLoader().
136            frame->loader()->activeDocumentLoader()->mainResourceLoader()->setShouldBufferData(false);
137        }
138    }
139
140    finish();
141}
142
143PluginDocument::PluginDocument(Frame* frame, const KURL& url)
144    : HTMLDocument(frame, url)
145    , m_shouldLoadPluginManually(true)
146{
147    setCompatibilityMode(QuirksMode);
148    lockCompatibilityMode();
149}
150
151PassRefPtr<DocumentParser> PluginDocument::createParser()
152{
153    return PluginDocumentParser::create(this);
154}
155
156Widget* PluginDocument::pluginWidget()
157{
158    if (m_pluginNode && m_pluginNode->renderer()) {
159        ASSERT(m_pluginNode->renderer()->isEmbeddedObject());
160        return toRenderEmbeddedObject(m_pluginNode->renderer())->widget();
161    }
162    return 0;
163}
164
165Node* PluginDocument::pluginNode()
166{
167    return m_pluginNode.get();
168}
169
170void PluginDocument::detach()
171{
172    // Release the plugin node so that we don't have a circular reference.
173    m_pluginNode = 0;
174    HTMLDocument::detach();
175}
176
177void PluginDocument::cancelManualPluginLoad()
178{
179    // PluginDocument::cancelManualPluginLoad should only be called once, but there are issues
180    // with how many times we call beforeload on object elements. <rdar://problem/8441094>.
181    if (!shouldLoadPluginManually())
182        return;
183
184    frame()->loader()->activeDocumentLoader()->mainResourceLoader()->cancel();
185    setShouldLoadPluginManually(false);
186}
187
188}
189