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-rw-r--r--khtml/html/html_headimpl.cpp649
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diff --git a/khtml/html/html_headimpl.cpp b/khtml/html/html_headimpl.cpp
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+/**
+ * This file is part of the DOM implementation for KDE.
+ *
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ * (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * (C) 2001 Dirk Mueller (mueller@kde.org)
+ * (C) 2002-2003 Apple Computer, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+// -------------------------------------------------------------------------
+
+#include "html/html_headimpl.h"
+#include "html/html_documentimpl.h"
+#include "xml/dom_textimpl.h"
+
+#include "khtmlview.h"
+#include "khtml_part.h"
+
+#include "misc/htmlhashes.h"
+#include "misc/loader.h"
+#include "misc/helper.h"
+
+#include "css/cssstyleselector.h"
+#include "css/css_stylesheetimpl.h"
+#include "css/csshelper.h"
+
+#include "ecma/kjs_proxy.h"
+
+#include <kurl.h>
+#include <kdebug.h>
+
+using namespace khtml;
+
+NodeImpl::Id HTMLBaseElementImpl::id() const
+{
+ return ID_BASE;
+}
+
+void HTMLBaseElementImpl::parseAttribute(AttributeImpl *attr)
+{
+ switch(attr->id())
+ {
+ case ATTR_HREF:
+ m_href = khtml::parseURL(attr->value());
+ process();
+ break;
+ case ATTR_TARGET:
+ m_target = attr->value();
+ process();
+ break;
+ default:
+ HTMLElementImpl::parseAttribute(attr);
+ }
+}
+
+void HTMLBaseElementImpl::insertedIntoDocument()
+{
+ HTMLElementImpl::insertedIntoDocument();
+ process();
+}
+
+void HTMLBaseElementImpl::removedFromDocument()
+{
+ HTMLElementImpl::removedFromDocument();
+
+ // Since the document doesn't have a base element...
+ // (This will break in the case of multiple base elements, but that's not valid anyway (?))
+ getDocument()->setBaseURL( KURL() );
+ getDocument()->setBaseTarget( QString::null );
+}
+
+void HTMLBaseElementImpl::process()
+{
+ if (!inDocument())
+ return;
+
+ if(!m_href.isEmpty() && getDocument()->view())
+ getDocument()->setBaseURL( KURL( getDocument()->view()->part()->url(), m_href.string() ) );
+
+ if(!m_target.isEmpty())
+ getDocument()->setBaseTarget( m_target.string() );
+
+ // ### should changing a document's base URL dynamically automatically update all images, stylesheets etc?
+}
+
+// -------------------------------------------------------------------------
+
+
+HTMLLinkElementImpl::~HTMLLinkElementImpl()
+{
+ if(m_sheet) m_sheet->deref();
+ if(m_cachedSheet) m_cachedSheet->deref(this);
+}
+
+NodeImpl::Id HTMLLinkElementImpl::id() const
+{
+ return ID_LINK;
+}
+
+void HTMLLinkElementImpl::parseAttribute(AttributeImpl *attr)
+{
+ switch (attr->id())
+ {
+ case ATTR_HREF:
+ m_url = getDocument()->completeURL( khtml::parseURL(attr->value()).string() );
+ process();
+ break;
+ case ATTR_REL:
+ case ATTR_TYPE:
+ process();
+ break;
+ case ATTR_TITLE:
+ // ### when title changes we have to reconsider our alternative
+ // stylesheet choice
+ break;
+ case ATTR_MEDIA:
+ m_media = attr->value().string().lower();
+ process();
+ break;
+ case ATTR_DISABLED: {
+ bool m_oldisDisabled = m_isDisabled;
+ m_isDisabled = attr->val();
+ if (m_oldisDisabled != m_isDisabled) {
+ if (isLoading()) {
+ if (m_oldisDisabled)
+ getDocument()->addPendingSheet();
+ else if (!m_alternate)
+ getDocument()->styleSheetLoaded();
+ }
+ if (m_oldisDisabled) {
+ // enabling: if it's an alternate sheet, pretend it's not.
+ m_alternate = false;
+ } else if (!m_alternate) {
+ // disabling: recheck alternate status
+ QString rel = getAttribute(ATTR_REL).string().lower();
+ QString type = getAttribute(ATTR_TYPE).string().lower();
+ m_alternate = (type.contains("text/css") || rel.contains("stylesheet")) && rel.contains("alternate");
+ }
+ if (isLoading())
+ break;
+ if (!m_sheet && !m_isDisabled) {
+ process();
+ if (isLoading() && m_alternate)
+ getDocument()->addPendingSheet();
+ m_alternate = false;
+ } else
+ getDocument()->updateStyleSelector(); // Update the style selector.
+ }
+ break;
+ }
+ default:
+ HTMLElementImpl::parseAttribute(attr);
+ }
+}
+
+void HTMLLinkElementImpl::process()
+{
+ if (!inDocument())
+ return;
+
+ QString type = getAttribute(ATTR_TYPE).string().lower();
+ QString rel = getAttribute(ATTR_REL).string().lower();
+
+ KHTMLPart* part = getDocument()->view() ? getDocument()->view()->part() : 0;
+
+ // IE extension: location of small icon for locationbar / bookmarks
+ // Uses both "shortcut icon" and "icon"
+ if ( part && rel.contains("icon") && !m_url.isEmpty() && !part->parentPart())
+ part->browserExtension()->setIconURL( KURL(m_url.string()) );
+
+ // Stylesheet
+ else if (!m_isDisabled &&
+ (type.contains("text/css") || rel.contains("stylesheet"))) {
+ // no need to load style sheets which aren't for the screen output
+ // ### there may be in some situations e.g. for an editor or script to manipulate
+ if( m_media.isNull() || m_media.contains("screen") || m_media.contains("all") || m_media.contains("print") ) {
+ m_loading = true;
+ // Add ourselves as a pending sheet, but only if we aren't an alternate
+ // stylesheet. Alternate stylesheets don't hold up render tree construction.
+ m_alternate = rel.contains("alternate");
+ if (!isAlternate())
+ getDocument()->addPendingSheet();
+
+ QString chset = getAttribute( ATTR_CHARSET ).string();
+ // set chset to charset of referring document when attribute CHARSET is absent.
+ // http://www.w3.org/TR/CSS21/syndata.html(4.4)
+ if (chset.isEmpty() && part) chset = part->encoding();
+ if (m_cachedSheet)
+ m_cachedSheet->deref(this);
+ m_cachedSheet = getDocument()->docLoader()->requestStyleSheet(m_url, chset);
+ if (m_cachedSheet) {
+ m_isCSSSheet = true;
+ m_cachedSheet->ref(this);
+ }
+ else if (!isAlternate()) {
+ // Error requesting sheet; decrement pending sheet count
+ getDocument()->styleSheetLoaded();
+ }
+ }
+ }
+ else if (m_sheet) {
+ // we no longer contain a stylesheet, e.g. perhaps rel or type was changed
+ m_sheet->deref();
+ m_sheet = 0;
+ m_isCSSSheet = false;
+ getDocument()->updateStyleSelector();
+ }
+}
+
+void HTMLLinkElementImpl::insertedIntoDocument()
+{
+ HTMLElementImpl::insertedIntoDocument();
+ process();
+}
+
+void HTMLLinkElementImpl::removedFromDocument()
+{
+ HTMLElementImpl::removedFromDocument();
+ getDocument()->updateStyleSelector();
+}
+
+void HTMLLinkElementImpl::setStyleSheet(const DOM::DOMString &url, const DOM::DOMString &sheetStr, const DOM::DOMString &charset)
+{
+ if (m_sheet)
+ m_sheet->deref();
+ m_sheet = new CSSStyleSheetImpl(this, url);
+ m_sheet->ref();
+ m_sheet->setCharset(charset);
+ m_sheet->parseString( sheetStr, !getDocument()->inCompatMode() );
+
+ MediaListImpl *media = new MediaListImpl( m_sheet, m_media );
+ m_sheet->setMedia( media );
+
+ finished();
+}
+
+void HTMLLinkElementImpl::finished()
+{
+ m_loading = false;
+
+ // Tell the doc about the sheet.
+ if (!isLoading() && !isDisabled() && !isAlternate())
+ getDocument()->styleSheetLoaded();
+
+ // ### major inefficiency, but currently necessary for proper
+ // alternate styles support. don't recalc the styleselector
+ // when nothing actually changed!
+ if ( isAlternate() && m_sheet && !isDisabled())
+ getDocument()->updateStyleSelector();
+}
+
+void HTMLLinkElementImpl::error( int, const QString& )
+{
+ finished();
+}
+
+bool HTMLLinkElementImpl::isLoading() const
+{
+// kdDebug( 6030 ) << "link: checking if loading!" << endl;
+ if(m_loading) return true;
+ if(!m_sheet) return false;
+ //if(!m_sheet->isCSSStyleSheet()) return false;
+ return static_cast<CSSStyleSheetImpl *>(m_sheet)->isLoading();
+}
+
+void HTMLLinkElementImpl::sheetLoaded()
+{
+ if (!isLoading() && !isDisabled() && !isAlternate())
+ getDocument()->styleSheetLoaded();
+}
+
+// -------------------------------------------------------------------------
+
+NodeImpl::Id HTMLMetaElementImpl::id() const
+{
+ return ID_META;
+}
+
+void HTMLMetaElementImpl::parseAttribute(AttributeImpl *attr)
+{
+ switch(attr->id())
+ {
+ case ATTR_HTTP_EQUIV:
+ m_equiv = attr->value();
+ process();
+ break;
+ case ATTR_CONTENT:
+ m_content = attr->value();
+ process();
+ break;
+ default:
+ HTMLElementImpl::parseAttribute(attr);
+ }
+}
+
+void HTMLMetaElementImpl::insertedIntoDocument()
+{
+ HTMLElementImpl::insertedIntoDocument();
+ process();
+}
+
+void HTMLMetaElementImpl::process()
+{
+ // Get the document to process the tag, but only if we're actually part of DOM tree (changing a meta tag while
+ // it's not in the tree shouldn't have any effect on the document)
+ if (inDocument() && !m_equiv.isNull() && !m_content.isNull())
+ getDocument()->processHttpEquiv(m_equiv,m_content);
+}
+
+// -------------------------------------------------------------------------
+
+HTMLScriptElementImpl::HTMLScriptElementImpl(DocumentImpl *doc)
+ : HTMLElementImpl(doc), m_cachedScript(0), m_createdByParser(false), m_evaluated(false)
+{
+}
+
+HTMLScriptElementImpl::~HTMLScriptElementImpl()
+{
+ if (m_cachedScript)
+ m_cachedScript->deref(this);
+}
+
+NodeImpl::Id HTMLScriptElementImpl::id() const
+{
+ return ID_SCRIPT;
+}
+
+bool HTMLScriptElementImpl::isURLAttribute(AttributeImpl *attr) const
+{
+ return attr->id() == ATTR_SRC;
+}
+
+void HTMLScriptElementImpl::childrenChanged()
+{
+ // If a node is inserted as a child of the script element
+ // and the script element has been inserted in the document
+ // we evaluate the script.
+ if (!m_createdByParser && inDocument() && firstChild())
+ evaluateScript(getDocument()->URL().url(), text());
+}
+
+void HTMLScriptElementImpl::insertedIntoDocument()
+{
+ HTMLElementImpl::insertedIntoDocument();
+
+ assert(!m_cachedScript);
+
+ if (m_createdByParser)
+ return;
+
+ QString url = getAttribute(ATTR_SRC).string();
+ if (!url.isEmpty()) {
+ QString charset = getAttribute(ATTR_CHARSET).string();
+ m_cachedScript = getDocument()->docLoader()->requestScript(DOMString(url), charset);
+ if (m_cachedScript)
+ m_cachedScript->ref(this);
+ return;
+ }
+
+ // If there's an empty script node, we shouldn't evaluate the script
+ // because if a script is inserted afterwards (by setting text or innerText)
+ // it should be evaluated, and evaluateScript only evaluates a script once.
+ DOMString scriptString = text();
+ if (!scriptString.isEmpty())
+ evaluateScript(getDocument()->URL().url(), scriptString);
+}
+
+void HTMLScriptElementImpl::removedFromDocument()
+{
+ HTMLElementImpl::removedFromDocument();
+
+ if (m_cachedScript) {
+ m_cachedScript->deref(this);
+ m_cachedScript = 0;
+ }
+}
+
+void HTMLScriptElementImpl::notifyFinished(CachedObject* o)
+{
+ CachedScript *cs = static_cast<CachedScript *>(o);
+
+ assert(cs == m_cachedScript);
+
+ QString URL = cs->url().string();
+ DOMString script = cs->script();
+ cs->deref(this);
+ m_cachedScript = 0;
+
+ evaluateScript(URL, script);
+}
+
+void HTMLScriptElementImpl::evaluateScript(const QString &URL, const DOMString &script)
+{
+ if (m_evaluated)
+ return;
+
+ KHTMLPart *part = getDocument()->part();
+ if (part) {
+ KJSProxy *proxy = KJSProxy::proxy(part);
+ if (proxy) {
+ m_evaluated = true;
+ proxy->evaluate(URL, 0, script.string(), 0);
+ DocumentImpl::updateDocumentsRendering();
+ }
+ }
+}
+
+DOMString HTMLScriptElementImpl::text() const
+{
+ DOMString val = "";
+
+ for (NodeImpl *n = firstChild(); n; n = n->nextSibling()) {
+ if (n->isTextNode())
+ val += static_cast<TextImpl *>(n)->data();
+ }
+
+ return val;
+}
+
+void HTMLScriptElementImpl::setText(const DOMString &value)
+{
+ int exceptioncode = 0;
+ int numChildren = childNodeCount();
+
+ if (numChildren == 1 && firstChild()->isTextNode()) {
+ static_cast<DOM::TextImpl *>(firstChild())->setData(value, exceptioncode);
+ return;
+ }
+
+ if (numChildren > 0) {
+ removeChildren();
+ }
+
+ appendChild(getDocument()->createTextNode(value.implementation()), exceptioncode);
+}
+
+DOMString HTMLScriptElementImpl::htmlFor() const
+{
+ // DOM Level 1 says: reserved for future use.
+ return DOMString();
+}
+
+void HTMLScriptElementImpl::setHtmlFor(const DOMString &/*value*/)
+{
+ // DOM Level 1 says: reserved for future use.
+}
+
+DOMString HTMLScriptElementImpl::event() const
+{
+ // DOM Level 1 says: reserved for future use.
+ return DOMString();
+}
+
+void HTMLScriptElementImpl::setEvent(const DOMString &/*value*/)
+{
+ // DOM Level 1 says: reserved for future use.
+}
+
+DOMString HTMLScriptElementImpl::charset() const
+{
+ return getAttribute(ATTR_CHARSET);
+}
+
+void HTMLScriptElementImpl::setCharset(const DOMString &value)
+{
+ setAttribute(ATTR_CHARSET, value);
+}
+
+bool HTMLScriptElementImpl::defer() const
+{
+ return !getAttribute(ATTR_DEFER).isNull();
+}
+
+void HTMLScriptElementImpl::setDefer(bool defer)
+{
+ setAttribute(ATTR_DEFER, defer ? "" : 0);
+}
+
+DOMString HTMLScriptElementImpl::src() const
+{
+ return getDocument()->completeURL(getAttribute(ATTR_SRC).string());
+}
+
+void HTMLScriptElementImpl::setSrc(const DOMString &value)
+{
+ setAttribute(ATTR_SRC, value);
+}
+
+DOMString HTMLScriptElementImpl::type() const
+{
+ return getAttribute(ATTR_TYPE);
+}
+
+void HTMLScriptElementImpl::setType(const DOMString &value)
+{
+ setAttribute(ATTR_TYPE, value);
+}
+
+// -------------------------------------------------------------------------
+
+HTMLStyleElementImpl::~HTMLStyleElementImpl()
+{
+ if(m_sheet) m_sheet->deref();
+}
+
+NodeImpl::Id HTMLStyleElementImpl::id() const
+{
+ return ID_STYLE;
+}
+
+// other stuff...
+void HTMLStyleElementImpl::parseAttribute(AttributeImpl *attr)
+{
+ switch (attr->id())
+ {
+ case ATTR_TYPE:
+ m_type = attr->value().lower();
+ break;
+ case ATTR_MEDIA:
+ m_media = attr->value().string().lower();
+ break;
+ default:
+ HTMLElementImpl::parseAttribute(attr);
+ }
+}
+
+void HTMLStyleElementImpl::insertedIntoDocument()
+{
+ HTMLElementImpl::insertedIntoDocument();
+ if (m_sheet)
+ getDocument()->updateStyleSelector();
+}
+
+void HTMLStyleElementImpl::removedFromDocument()
+{
+ HTMLElementImpl::removedFromDocument();
+ if (m_sheet)
+ getDocument()->updateStyleSelector();
+}
+
+void HTMLStyleElementImpl::childrenChanged()
+{
+ HTMLElementImpl::childrenChanged();
+
+ DOMString text = "";
+
+ for (NodeImpl *c = firstChild(); c != 0; c = c->nextSibling()) {
+ if ((c->nodeType() == Node::TEXT_NODE) ||
+ (c->nodeType() == Node::CDATA_SECTION_NODE) ||
+ (c->nodeType() == Node::COMMENT_NODE))
+ text += c->nodeValue();
+ }
+
+ if (m_sheet) {
+ m_sheet->deref();
+ m_sheet = 0;
+ }
+
+ m_loading = false;
+ if ((m_type.isEmpty() || m_type == "text/css") // Type must be empty or CSS
+ && (m_media.isNull() || m_media.contains("screen") || m_media.contains("all") || m_media.contains("print"))) {
+ getDocument()->addPendingSheet();
+ m_loading = true;
+ m_sheet = new CSSStyleSheetImpl(this);
+ m_sheet->ref();
+ m_sheet->parseString( text, !getDocument()->inCompatMode() );
+ MediaListImpl* media = new MediaListImpl( m_sheet, DOMString( m_media ) );
+ m_sheet->setMedia( media );
+ m_loading = false;
+ }
+
+ if (!isLoading() && m_sheet)
+ getDocument()->styleSheetLoaded();
+}
+
+bool HTMLStyleElementImpl::isLoading() const
+{
+ if (m_loading) return true;
+ if(!m_sheet) return false;
+ return static_cast<CSSStyleSheetImpl *>(m_sheet)->isLoading();
+}
+
+void HTMLStyleElementImpl::sheetLoaded()
+{
+ if (!isLoading())
+ getDocument()->styleSheetLoaded();
+}
+
+// -------------------------------------------------------------------------
+
+NodeImpl::Id HTMLTitleElementImpl::id() const
+{
+ return ID_TITLE;
+}
+
+void HTMLTitleElementImpl::childrenChanged()
+{
+ HTMLElementImpl::childrenChanged();
+
+ m_title = "";
+ for (NodeImpl *c = firstChild(); c != 0; c = c->nextSibling()) {
+ if ((c->nodeType() == Node::TEXT_NODE) || (c->nodeType() == Node::CDATA_SECTION_NODE))
+ m_title += c->nodeValue();
+ }
+ if ( !m_title.isEmpty() && inDocument())
+ getDocument()->setTitle(m_title);
+}
+
+DOMString HTMLTitleElementImpl::text()
+{
+ if (firstChild() && firstChild()->nodeType() == Node::TEXT_NODE) {
+ return firstChild()->nodeValue();
+ }
+ return "";
+}
+
+void HTMLTitleElementImpl::setText( const DOMString& str )
+{
+ int exceptioncode = 0;
+ // Look for an existing text child node
+ DOM::NodeListImpl* nl(childNodes());
+ if (nl)
+ {
+ for (unsigned int i = 0; i < nl->length(); i++) {
+ if (nl->item(i)->nodeType() == DOM::Node::TEXT_NODE) {
+ static_cast<DOM::TextImpl *>(nl->item(i))->setData(str, exceptioncode);
+ return;
+ }
+ }
+ delete nl;
+ }
+ // No child text node found, creating one
+ DOM::TextImpl* t = getDocument()->createTextNode(str.implementation());
+ appendChild(t, exceptioncode);
+}