src/3rdparty/webkit/WebCore/rendering/RenderPartObject.cpp

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
   4  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
   5  * Copyright (C) 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #include "config.h"
  25 #include "RenderPartObject.h"
  26
  27 #include "Frame.h"
  28 #include "FrameLoaderClient.h"
  29 #include "HTMLEmbedElement.h"
  30 #include "HTMLIFrameElement.h"
  31 #include "HTMLNames.h"
  32 #include "HTMLObjectElement.h"
  33 #include "HTMLParamElement.h"
  34 #include "MIMETypeRegistry.h"
  35 #include "Page.h"
  36 #include "PluginData.h"
  37 #include "RenderView.h"
  38 #include "Text.h"
  39
  40 #if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
  41 #include "HTMLVideoElement.h"
  42 #endif
  43
  44 namespace WebCore {
  45
  46 using namespace HTMLNames;
  47
  48 RenderPartObject::RenderPartObject(Element* element)
  49     : RenderPart(element)
  50 {
  51     // init RenderObject attributes
  52     setInline(true);
  53     m_hasFallbackContent = false;
  54
  55     if (element->hasTagName(embedTag) || element->hasTagName(objectTag))
  56         view()->frameView()->setIsVisuallyNonEmpty();
  57 }
  58
  59 RenderPartObject::~RenderPartObject()
  60 {
  61     if (frameView())
  62         frameView()->removeWidgetToUpdate(this);
  63 }
  64
  65 static bool isURLAllowed(Document* doc, const String& url)
  66 {
  67     if (doc->frame()->page()->frameCount() >= 200)
  68         return false;
  69
  70     // We allow one level of self-reference because some sites depend on that.
  71     // But we don't allow more than one.
  72     KURL completeURL = doc->completeURL(url);
  73     bool foundSelfReference = false;
  74     for (Frame* frame = doc->frame(); frame; frame = frame->tree()->parent()) {
  75         if (equalIgnoringRef(frame->loader()->url(), completeURL)) {
  76             if (foundSelfReference)
  77                 return false;
  78             foundSelfReference = true;
  79         }
  80     }
  81     return true;
  82 }
  83
  84 typedef HashMap<String, String, CaseFoldingHash> ClassIdToTypeMap;
  85
  86 static ClassIdToTypeMap* createClassIdToTypeMap()
  87 {
  88     ClassIdToTypeMap* map = new ClassIdToTypeMap;
  89     map->add("clsid:D27CDB6E-AE6D-11CF-96B8-444553540000", "application/x-shockwave-flash");
  90     map->add("clsid:CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA", "audio/x-pn-realaudio-plugin");
  91     map->add("clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B", "video/quicktime");
  92     map->add("clsid:166B1BCA-3F9C-11CF-8075-444553540000", "application/x-director");
  93 #if ENABLE(ACTIVEX_TYPE_CONVERSION_WMPLAYER)
  94     map->add("clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6", "application/x-mplayer2");
  95     map->add("clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95", "application/x-mplayer2");
  96 #endif
  97     return map;
  98 }
  99
 100 static const String& activeXType()
 101 {
 102     DEFINE_STATIC_LOCAL(String, activeXType, ("application/x-oleobject"));
 103     return activeXType;
 104 }
 105
 106 static inline bool havePlugin(const PluginData* pluginData, const String& type)
 107 {
 108     return pluginData && !type.isEmpty() && pluginData->supportsMimeType(type);
 109 }
 110
 111 static String serviceTypeForClassId(const String& classId, const PluginData* pluginData)
 112 {
 113     // Return early if classId is empty (since we won't do anything below).
 114     // Furthermore, if classId is null, calling get() below will crash.
 115     if (classId.isEmpty())
 116         return String();
 117
 118     static ClassIdToTypeMap* map = createClassIdToTypeMap();
 119     String type = map->get(classId);
 120
 121     // If we do have a plug-in that supports generic ActiveX content and don't have a plug-in
 122     // for the MIME type we came up with, ignore the MIME type we came up with and just use
 123     // the ActiveX type.
 124     if (havePlugin(pluginData, activeXType()) && !havePlugin(pluginData, type))
 125         return activeXType();
 126
 127     return type;
 128 }
 129
 130 static inline bool shouldUseEmbedDescendant(HTMLObjectElement* objectElement, const PluginData* pluginData)
 131 {
 132 #if PLATFORM(MAC)
 133     UNUSED_PARAM(objectElement);
 134     UNUSED_PARAM(pluginData);
 135     // On Mac, we always want to use the embed descendant.
 136     return true;
 137 #else
 138     // If we have both an <object> and <embed>, we always want to use the <embed> except when we have
 139     // an ActiveX plug-in and plan to use it.
 140     return !(havePlugin(pluginData, activeXType())
 141         && serviceTypeForClassId(objectElement->classId(), pluginData) == activeXType());
 142 #endif
 143 }
 144
 145 static void mapDataParamToSrc(Vector<String>* paramNames, Vector<String>* paramValues)
 146 {
 147     // Some plugins don't understand the "data" attribute of the OBJECT tag (i.e. Real and WMP
 148     // require "src" attribute).
 149     int srcIndex = -1, dataIndex = -1;
 150     for (unsigned int i = 0; i < paramNames->size(); ++i) {
 151         if (equalIgnoringCase((*paramNames)[i], "src"))
 152             srcIndex = i;
 153         else if (equalIgnoringCase((*paramNames)[i], "data"))
 154             dataIndex = i;
 155     }
 156
 157     if (srcIndex == -1 && dataIndex != -1) {
 158         paramNames->append("src");
 159         paramValues->append((*paramValues)[dataIndex]);
 160     }
 161 }
 162
 163 void RenderPartObject::updateWidget(bool onlyCreateNonNetscapePlugins)
 164 {
 165     String url;
 166     String serviceType;
 167     Vector<String> paramNames;
 168     Vector<String> paramValues;
 169     Frame* frame = frameView()->frame();
 170
 171     if (node()->hasTagName(objectTag)) {
 172         HTMLObjectElement* o = static_cast<HTMLObjectElement*>(node());
 173
 174         o->setNeedWidgetUpdate(false);
 175         if (!o->isFinishedParsingChildren())
 176           return;
 177
 178         // Check for a child EMBED tag.
 179         HTMLEmbedElement* embed = 0;
 180         const PluginData* pluginData = frame->page()->pluginData();
 181         if (shouldUseEmbedDescendant(o, pluginData)) {
 182             for (Node* child = o->firstChild(); child; ) {
 183                 if (child->hasTagName(embedTag)) {
 184                     embed = static_cast<HTMLEmbedElement*>(child);
 185                     break;
 186                 } else if (child->hasTagName(objectTag))
 187                     child = child->nextSibling();         // Don't descend into nested OBJECT tags
 188                 else
 189                     child = child->traverseNextNode(o);   // Otherwise descend (EMBEDs may be inside COMMENT tags)
 190             }
 191         }
 192
 193         // Use the attributes from the EMBED tag instead of the OBJECT tag including WIDTH and HEIGHT.
 194         HTMLElement *embedOrObject;
 195         if (embed) {
 196             embedOrObject = (HTMLElement *)embed;
 197             url = embed->url();
 198             serviceType = embed->serviceType();
 199         } else
 200             embedOrObject = (HTMLElement *)o;
 201
 202         // If there was no URL or type defined in EMBED, try the OBJECT tag.
 203         if (url.isEmpty())
 204             url = o->url();
 205         if (serviceType.isEmpty())
 206             serviceType = o->serviceType();
 207
 208         HashSet<StringImpl*, CaseFoldingHash> uniqueParamNames;
 209
 210         // Scan the PARAM children.
 211         // Get the URL and type from the params if we don't already have them.
 212         // Get the attributes from the params if there is no EMBED tag.
 213         Node *child = o->firstChild();
 214         while (child && (url.isEmpty() || serviceType.isEmpty() || !embed)) {
 215             if (child->hasTagName(paramTag)) {
 216                 HTMLParamElement* p = static_cast<HTMLParamElement*>(child);
 217                 String name = p->name();
 218                 if (url.isEmpty() && (equalIgnoringCase(name, "src") || equalIgnoringCase(name, "movie") || equalIgnoringCase(name, "code") || equalIgnoringCase(name, "url")))
 219                     url = p->value();
 220                 if (serviceType.isEmpty() && equalIgnoringCase(name, "type")) {
 221                     serviceType = p->value();
 222                     int pos = serviceType.find(";");
 223                     if (pos != -1)
 224                         serviceType = serviceType.left(pos);
 225                 }
 226                 if (!embed && !name.isEmpty()) {
 227                     uniqueParamNames.add(name.impl());
 228                     paramNames.append(p->name());
 229                     paramValues.append(p->value());
 230                 }
 231             }
 232             child = child->nextSibling();
 233         }
 234
 235         // When OBJECT is used for an applet via Sun's Java plugin, the CODEBASE attribute in the tag
 236         // points to the Java plugin itself (an ActiveX component) while the actual applet CODEBASE is
 237         // in a PARAM tag. See <http://java.sun.com/products/plugin/1.2/docs/tags.html>. This means
 238         // we have to explicitly suppress the tag's CODEBASE attribute if there is none in a PARAM,
 239         // else our Java plugin will misinterpret it. [4004531]
 240         String codebase;
 241         if (!embed && MIMETypeRegistry::isJavaAppletMIMEType(serviceType)) {
 242             codebase = "codebase";
 243             uniqueParamNames.add(codebase.impl()); // pretend we found it in a PARAM already
 244         }
 245
 246         // Turn the attributes of either the EMBED tag or OBJECT tag into arrays, but don't override PARAM values.
 247         NamedNodeMap* attributes = embedOrObject->attributes();
 248         if (attributes) {
 249             for (unsigned i = 0; i < attributes->length(); ++i) {
 250                 Attribute* it = attributes->attributeItem(i);
 251                 const AtomicString& name = it->name().localName();
 252                 if (embed || !uniqueParamNames.contains(name.impl())) {
 253                     paramNames.append(name.string());
 254                     paramValues.append(it->value().string());
 255                 }
 256             }
 257         }
 258
 259         mapDataParamToSrc(&paramNames, &paramValues);
 260
 261         // If we still don't have a type, try to map from a specific CLASSID to a type.
 262         if (serviceType.isEmpty())
 263             serviceType = serviceTypeForClassId(o->classId(), pluginData);
 264
 265         if (!isURLAllowed(document(), url))
 266             return;
 267
 268         // Find out if we support fallback content.
 269         m_hasFallbackContent = false;
 270         for (Node *child = o->firstChild(); child && !m_hasFallbackContent; child = child->nextSibling()) {
 271             if ((!child->isTextNode() && !child->hasTagName(embedTag) && !child->hasTagName(paramTag)) || // Discount <embed> and <param>
 272                 (child->isTextNode() && !static_cast<Text*>(child)->containsOnlyWhitespace()))
 273                 m_hasFallbackContent = true;
 274         }
 275
 276         if (onlyCreateNonNetscapePlugins) {
 277             KURL completedURL;
 278             if (!url.isEmpty())
 279                 completedURL = frame->loader()->completeURL(url);
 280
 281             if (frame->loader()->client()->objectContentType(completedURL, serviceType) == ObjectContentNetscapePlugin)
 282                 return;
 283         }
 284
 285         bool success = frame->loader()->requestObject(this, url, AtomicString(o->name()), serviceType, paramNames, paramValues);
 286         if (!success && m_hasFallbackContent)
 287             o->renderFallbackContent();
 288     } else if (node()->hasTagName(embedTag)) {
 289         HTMLEmbedElement *o = static_cast<HTMLEmbedElement*>(node());
 290         o->setNeedWidgetUpdate(false);
 291         url = o->url();
 292         serviceType = o->serviceType();
 293
 294         if (url.isEmpty() && serviceType.isEmpty())
 295             return;
 296         if (!isURLAllowed(document(), url))
 297             return;
 298
 299         // add all attributes set on the embed object
 300         NamedNodeMap* a = o->attributes();
 301         if (a) {
 302             for (unsigned i = 0; i < a->length(); ++i) {
 303                 Attribute* it = a->attributeItem(i);
 304                 paramNames.append(it->name().localName().string());
 305                 paramValues.append(it->value().string());
 306             }
 307         }
 308
 309         if (onlyCreateNonNetscapePlugins) {
 310             KURL completedURL;
 311             if (!url.isEmpty())
 312                 completedURL = frame->loader()->completeURL(url);
 313
 314             if (frame->loader()->client()->objectContentType(completedURL, serviceType) == ObjectContentNetscapePlugin)
 315                 return;
 316
 317         }
 318
 319         frame->loader()->requestObject(this, url, o->getAttribute(nameAttr), serviceType, paramNames, paramValues);
 320     }
 321 #if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
 322     else if (node()->hasTagName(videoTag) || node()->hasTagName(audioTag)) {
 323         HTMLMediaElement* o = static_cast<HTMLMediaElement*>(node());
 324
 325         o->setNeedWidgetUpdate(false);
 326         if (node()->hasTagName(videoTag)) {
 327             HTMLVideoElement* vid = static_cast<HTMLVideoElement*>(node());
 328             String poster = vid->poster();
 329             if (!poster.isEmpty()) {
 330                 paramNames.append("_media_element_poster_");
 331                 paramValues.append(poster);
 332             }
 333         }
 334
 335         url = o->initialURL();
 336         if (!url.isEmpty()) {
 337             paramNames.append("_media_element_src_");
 338             paramValues.append(url);
 339         }
 340
 341         serviceType = "application/x-media-element-proxy-plugin";
 342         frame->loader()->requestObject(this, url, nullAtom, serviceType, paramNames, paramValues);
 343     }
 344 #endif
 345 }
 346
 347 void RenderPartObject::layout()
 348 {
 349     ASSERT(needsLayout());
 350
 351     calcWidth();
 352     calcHeight();
 353     adjustOverflowForBoxShadowAndReflect();
 354
 355     RenderPart::layout();
 356
 357     if (!widget() && frameView())
 358         frameView()->addWidgetToUpdate(this);
 359
 360     setNeedsLayout(false);
 361 }
 362
 363 void RenderPartObject::viewCleared()
 364 {
 365     if (node() && widget() && widget()->isFrameView()) {
 366         FrameView* view = static_cast<FrameView*>(widget());
 367         int marginw = -1;
 368         int marginh = -1;
 369         if (node()->hasTagName(iframeTag)) {
 370             HTMLIFrameElement* frame = static_cast<HTMLIFrameElement*>(node());
 371             marginw = frame->getMarginWidth();
 372             marginh = frame->getMarginHeight();
 373         }
 374         if (marginw != -1)
 375             view->setMarginWidth(marginw);
 376         if (marginh != -1)
 377             view->setMarginHeight(marginh);
 378     }
 379 }
 380
 381 }