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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2000 Stefan Schimanski (1Stein (at) gmx.de)
      5  * Copyright (C) 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
      6  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  */
     23 
     24 #include "config.h"
     25 #include "HTMLAppletElement.h"
     26 
     27 #include "Attribute.h"
     28 #include "HTMLDocument.h"
     29 #include "HTMLNames.h"
     30 #include "RenderApplet.h"
     31 #include "SecurityOrigin.h"
     32 #include "Settings.h"
     33 #include "Widget.h"
     34 
     35 namespace WebCore {
     36 
     37 using namespace HTMLNames;
     38 
     39 inline HTMLAppletElement::HTMLAppletElement(const QualifiedName& tagName, Document* document)
     40     : HTMLPlugInElement(tagName, document)
     41 {
     42     ASSERT(hasTagName(appletTag));
     43 }
     44 
     45 PassRefPtr<HTMLAppletElement> HTMLAppletElement::create(const QualifiedName& tagName, Document* document)
     46 {
     47     return adoptRef(new HTMLAppletElement(tagName, document));
     48 }
     49 
     50 void HTMLAppletElement::parseMappedAttribute(Attribute* attr)
     51 {
     52     if (attr->name() == altAttr ||
     53         attr->name() == archiveAttr ||
     54         attr->name() == codeAttr ||
     55         attr->name() == codebaseAttr ||
     56         attr->name() == mayscriptAttr ||
     57         attr->name() == objectAttr) {
     58         // Do nothing.
     59     } else if (attr->name() == nameAttr) {
     60         const AtomicString& newName = attr->value();
     61         if (inDocument() && document()->isHTMLDocument()) {
     62             HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
     63             document->removeNamedItem(m_name);
     64             document->addNamedItem(newName);
     65         }
     66         m_name = newName;
     67     } else if (isIdAttributeName(attr->name())) {
     68         const AtomicString& newId = attr->value();
     69         if (inDocument() && document()->isHTMLDocument()) {
     70             HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
     71             document->removeExtraNamedItem(m_id);
     72             document->addExtraNamedItem(newId);
     73         }
     74         m_id = newId;
     75         // also call superclass
     76         HTMLPlugInElement::parseMappedAttribute(attr);
     77     } else
     78         HTMLPlugInElement::parseMappedAttribute(attr);
     79 }
     80 
     81 void HTMLAppletElement::insertedIntoDocument()
     82 {
     83     if (document()->isHTMLDocument()) {
     84         HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
     85         document->addNamedItem(m_name);
     86         document->addExtraNamedItem(m_id);
     87     }
     88 
     89     HTMLPlugInElement::insertedIntoDocument();
     90 }
     91 
     92 void HTMLAppletElement::removedFromDocument()
     93 {
     94     if (document()->isHTMLDocument()) {
     95         HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
     96         document->removeNamedItem(m_name);
     97         document->removeExtraNamedItem(m_id);
     98     }
     99 
    100     HTMLPlugInElement::removedFromDocument();
    101 }
    102 
    103 bool HTMLAppletElement::rendererIsNeeded(RenderStyle* style)
    104 {
    105     if (!fastHasAttribute(codeAttr))
    106         return false;
    107 
    108     return HTMLPlugInElement::rendererIsNeeded(style);
    109 }
    110 
    111 RenderObject* HTMLAppletElement::createRenderer(RenderArena*, RenderStyle* style)
    112 {
    113     if (canEmbedJava()) {
    114         HashMap<String, String> args;
    115 
    116         args.set("code", getAttribute(codeAttr));
    117 
    118         const AtomicString& codeBase = getAttribute(codebaseAttr);
    119         if (!codeBase.isNull())
    120             args.set("codeBase", codeBase);
    121 
    122         const AtomicString& name = document()->isHTMLDocument() ? getAttribute(nameAttr) : getIdAttribute();
    123         if (!name.isNull())
    124             args.set("name", name);
    125         const AtomicString& archive = getAttribute(archiveAttr);
    126         if (!archive.isNull())
    127             args.set("archive", archive);
    128 
    129         args.set("baseURL", document()->baseURL().string());
    130 
    131         const AtomicString& mayScript = getAttribute(mayscriptAttr);
    132         if (!mayScript.isNull())
    133             args.set("mayScript", mayScript);
    134 
    135         // Other arguments (from <PARAM> tags) are added later.
    136 
    137         return new (document()->renderArena()) RenderApplet(this, args);
    138     }
    139 
    140     return RenderObject::createObject(this, style);
    141 }
    142 
    143 void HTMLAppletElement::defaultEventHandler(Event* event)
    144 {
    145     RenderObject* r = renderer();
    146     if (!r || !r->isWidget())
    147         return;
    148     Widget* widget = toRenderWidget(r)->widget();
    149     if (!widget)
    150         return;
    151     widget->handleEvent(event);
    152 }
    153 
    154 RenderWidget* HTMLAppletElement::renderWidgetForJSBindings() const
    155 {
    156     if (!canEmbedJava())
    157         return 0;
    158 
    159     RenderApplet* applet = toRenderApplet(renderer());
    160     if (applet)
    161         applet->createWidgetIfNecessary();
    162 
    163     return applet;
    164 }
    165 
    166 bool HTMLAppletElement::canEmbedJava() const
    167 {
    168     if (document()->securityOrigin()->isSandboxed(SandboxPlugins))
    169         return false;
    170 
    171     Settings* settings = document()->settings();
    172     return settings && settings->isJavaEnabled();
    173 }
    174 
    175 void HTMLAppletElement::finishParsingChildren()
    176 {
    177     // The parser just reached </applet>, so all the params are available now.
    178     HTMLPlugInElement::finishParsingChildren();
    179     if (renderer())
    180         renderer()->setNeedsLayout(true); // This will cause it to create its widget & the Java applet
    181 }
    182 
    183 }
    184