288 lines
7.1 KiB
Java
288 lines
7.1 KiB
Java
/* DomHTMLElement.java --
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.xml.dom.html2;
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import gnu.xml.dom.DomDOMException;
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import gnu.xml.dom.DomElement;
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import gnu.xml.dom.DomEvent;
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import org.w3c.dom.DOMException;
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import org.w3c.dom.NamedNodeMap;
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import org.w3c.dom.Node;
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import org.w3c.dom.events.UIEvent;
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import org.w3c.dom.html2.HTMLElement;
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/**
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* Abstract implementation of an HTML element node.
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*
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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*/
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public abstract class DomHTMLElement
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extends DomElement
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implements HTMLElement
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{
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protected DomHTMLElement(DomHTMLDocument owner, String namespaceURI,
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String name)
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{
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super(owner, namespaceURI, name);
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}
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/**
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* Returns the value of the specified attribute.
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* The attribute name is case insensitive.
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*/
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protected String getHTMLAttribute(String name)
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{
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if (hasAttributes())
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{
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NamedNodeMap attrs = getAttributes();
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int len = attrs.getLength();
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for (int i = 0; i < len; i++)
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{
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Node attr = attrs.item(i);
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String attrName = attr.getLocalName();
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if (attrName == null)
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{
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attrName = attr.getNodeName();
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}
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if (attrName.equalsIgnoreCase(name))
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{
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return attr.getNodeValue();
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}
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}
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}
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return "";
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}
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protected int getIntHTMLAttribute(String name)
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{
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String value = getHTMLAttribute(name);
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if (value == null)
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{
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return -1;
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}
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try
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{
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return Integer.parseInt(value);
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}
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catch (NumberFormatException e)
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{
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return -1;
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}
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}
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protected boolean getBooleanHTMLAttribute(String name)
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{
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String value = getHTMLAttribute(name);
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return value != null;
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}
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/**
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* Sets the value of the specified attribute.
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* The attribute name is case insensitive.
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*/
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protected void setHTMLAttribute(String name, String value)
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{
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Node attr;
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NamedNodeMap attrs = getAttributes();
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int len = attrs.getLength();
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for (int i = 0; i < len; i++)
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{
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attr = attrs.item(i);
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String attrName = attr.getLocalName();
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if (attrName == null)
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{
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attrName = attr.getNodeName();
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}
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if (attrName.equalsIgnoreCase(name))
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{
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if (value != null)
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{
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attr.setNodeValue(value);
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}
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else
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{
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attrs.removeNamedItem(attr.getNodeName());
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}
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return;
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}
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}
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if (value != null)
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{
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// Create a new attribute
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DomHTMLDocument doc = (DomHTMLDocument) getOwnerDocument();
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// XXX namespace URI for attribute?
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attr = doc.createAttribute(name);
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attr.setNodeValue(value);
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}
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}
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protected void setIntHTMLAttribute(String name, int value)
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{
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setHTMLAttribute(name, Integer.toString(value));
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}
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protected void setBooleanHTMLAttribute(String name, boolean value)
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{
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setHTMLAttribute(name, value ? name : null);
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}
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/**
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* Returns the first parent element with the specified name.
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*/
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protected Node getParentElement(String name)
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{
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for (Node parent = getParentNode(); parent != null;
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parent = parent.getParentNode())
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{
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String parentName = parent.getLocalName();
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if (parentName == null)
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{
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parentName = parent.getNodeName();
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}
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if (name.equalsIgnoreCase(parentName))
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{
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return parent;
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}
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}
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return null;
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}
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/**
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* Returns the first child element with the specified name.
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*/
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protected Node getChildElement(String name)
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{
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for (Node child = getFirstChild(); child != null;
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child = child.getNextSibling())
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{
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String childName = child.getLocalName();
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if (childName == null)
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{
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childName = child.getLocalName();
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}
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if (name.equalsIgnoreCase(childName))
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{
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return child;
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}
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}
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return null;
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}
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/**
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* Returns the index of this element among elements of the same name,
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* relative to its parent.
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*/
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protected int getIndex()
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{
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int index = 0;
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Node parent = getParentNode();
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if (parent != null)
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{
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for (Node ctx = parent.getFirstChild(); ctx != null;
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ctx = ctx.getNextSibling())
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{
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if (ctx == this)
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{
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return index;
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}
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index++;
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}
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}
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throw new DomDOMException(DOMException.NOT_FOUND_ERR);
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}
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protected void dispatchUIEvent(String name)
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{
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UIEvent event = new DomEvent.DomUIEvent(name);
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dispatchEvent(event);
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}
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public String getId()
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{
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return getHTMLAttribute("id");
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}
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public void setId(String id)
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{
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setHTMLAttribute("id", id);
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}
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public String getTitle()
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{
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return getHTMLAttribute("title");
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}
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public void setTitle(String title)
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{
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setHTMLAttribute("title", title);
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}
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public String getLang()
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{
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return getHTMLAttribute("lang");
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}
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public void setLang(String lang)
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{
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setHTMLAttribute("lang", lang);
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}
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public String getDir()
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{
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return getHTMLAttribute("dir");
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}
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public void setDir(String dir)
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{
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setHTMLAttribute("dir", dir);
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}
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public String getClassName()
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{
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return getHTMLAttribute("class");
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}
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public void setClassName(String className)
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{
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setHTMLAttribute("class", className);
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}
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}
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