зеркало из https://github.com/mozilla/pjs.git
114 строки
3.2 KiB
Java
114 строки
3.2 KiB
Java
/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Grendel mail/news client.
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*
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* The Initial Developer of the Original Code is Giao Nguyen
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* <grail@cafebabe.org>. Portions created by Giao Nguyen are Copyright
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* (C) 1999 Giao Nguyen. All Rights Reserved.
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*
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* Contributors: Morgan Schweers <morgan@vixen.com>
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*/
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package grendel.ui;
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import java.util.Properties;
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import java.net.URL;
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import java.io.IOException;
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import java.awt.Container;
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import javax.swing.JComponent;
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import org.w3c.dom.Node;
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import org.w3c.dom.Element;
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public abstract class XMLWidgetBuilder {
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/**
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* The properties bundle that the builder will reference to for
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* things like getReferencedLabel.
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*/
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protected Properties properties;
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/**
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* Reference point into the CLASSPATH for locating the XML file.
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*/
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protected Class ref;
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/**
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* Process the node.
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*
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* @param node the node tho be processed
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* @param component the parent component that the node will be added to
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* (if applicable)
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*/
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protected abstract void processNode(Node node, JComponent component);
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/**
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* Set the reference point for URL location.
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*
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* @param ref the reference point for local urls to be loaded from.
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*/
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public void setReference(Class ref) {
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this.ref = ref;
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}
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/**
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* Set the element as the item containing configuration for the
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* builder. This would usually be the link tag in the head.
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*
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* @param config the element containing configuration data
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*/
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public void setConfiguration(Element config) {
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try {
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URL linkURL;
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Class local = ((ref == null) ? getClass() : ref);;
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// get the string properties
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if (config.getAttribute("href") != null
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&& config.getAttribute("role").equals("stringprops")
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&& config.getTagName().equals("link")) {
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linkURL = local.getResource(config.getAttribute("href"));
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properties = new Properties();
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if (linkURL != null) properties.load(linkURL.openStream());
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}
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} catch (IOException io) {
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io.printStackTrace();
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}
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}
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/**
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* Get a label referenced by the string properties file.
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* @param current the element to process
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* @param attr the attribute to look up
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* @return the string as post lookup, or the string pre lookup if
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* the lookup failed
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*/
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public String getReferencedLabel(Element current, String attr) {
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String label = current.getAttribute(attr);
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if (properties == null) return label;
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// if it starts with a '$' we crossreference to properties
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if (label != null && label.length() > 0
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&& label.charAt(0) == '$') {
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String key = label.substring(1);
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label = properties.getProperty(key, label);
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}
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return label;
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}
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}
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