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/*******************************************************************************
* Copyright (c) 2000, 2015 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Phil Loats (IBM Corp.) - fix to use only foundation APIs
*******************************************************************************/
package org.eclipse.help.internal.context;
import java.util.ArrayList;
import org.eclipse.help.ICommandLink;
import org.eclipse.help.IContext;
import org.eclipse.help.IContext2;
import org.eclipse.help.IContext3;
import org.eclipse.help.IHelpResource;
import org.eclipse.help.ITopic;
import org.eclipse.help.internal.CommandLink;
import org.eclipse.help.internal.Topic;
import org.eclipse.help.internal.UAElement;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
public class Context extends UAElement implements IContext3 {
public static final String ATTRIBUTE_TITLE = "title"; //$NON-NLS-1$
public static final String NAME = "context"; //$NON-NLS-1$
public static final String ELEMENT_DESCRIPTION = "description"; //$NON-NLS-1$
public static final String ATTRIBUTE_ID = "id"; //$NON-NLS-1$
public static final String ATTRIBUTE_PLUGIN_ID = "pluginId"; //$NON-NLS-1$
public Context(Element src) {
super(src);
}
public Context(IContext src, String id) {
super(NAME);
setId(id);
children = new ArrayList();
mergeContext(src);
}
public void mergeContext(IContext src) {
String text = src.getText();
if (getText() == null || getText().length() == 0) {
setText(text);
}
if (src instanceof IContext2 && getTitle() == null) {
String title = ((IContext2)src).getTitle();
if (title != null) {
setAttribute(ATTRIBUTE_TITLE, title);
}
}
if (src instanceof IContext3) {
ICommandLink[] commands = ((IContext3)src).getRelatedCommands();
for (int i=0;i<commands.length;++i) {
appendChild(new CommandLink(commands[i]));
}
}
IHelpResource[] topics = src.getRelatedTopics();
for (int i=0;i<topics.length;++i) {
if (topics[i] instanceof ITopic) {
appendChild(new Topic((ITopic)topics[i]));
}
else {
Topic topic = new Topic();
topic.setHref(topics[i].getHref());
topic.setLabel(topics[i].getLabel());
appendChild(topic);
}
}
}
@Override
public String getCategory(IHelpResource topic) {
return null;
}
public String getId() {
return getAttribute(ATTRIBUTE_ID);
}
@Override
public ICommandLink[] getRelatedCommands() {
return (ICommandLink[])getChildren(ICommandLink.class);
}
@Override
public IHelpResource[] getRelatedTopics() {
return (IHelpResource[])getChildren(IHelpResource.class);
}
@Override
public String getStyledText() {
return null;
}
@Override
public String getText() {
Node node = getElement().getFirstChild();
while (node != null) {
if (node.getNodeType() == Node.ELEMENT_NODE) {
if (ELEMENT_DESCRIPTION.equals(node.getNodeName())) {
node.normalize();
Node text = node.getFirstChild();
if (text == null) {
return new String();
}
if (text.getNodeType() == Node.TEXT_NODE) {
return text.getNodeValue();
}
}
}
node = node.getNextSibling();
}
return null;
}
@Override
public String getTitle() {
String title = getAttribute(ATTRIBUTE_TITLE);
if (title == null || title.length() == 0) {
return null;
}
return title;
}
public void setId(String id) {
setAttribute(ATTRIBUTE_ID, id);
}
public void setText(String text) {
Node node = getElement().getFirstChild();
while (node != null) {
if (node.getNodeType() == Node.ELEMENT_NODE) {
if (ELEMENT_DESCRIPTION.equals(node.getNodeName())) {
getElement().removeChild(node);
break;
}
}
node = node.getNextSibling();
}
if (text != null) {
Document document = getElement().getOwnerDocument();
Node description = getElement().appendChild(document.createElement(ELEMENT_DESCRIPTION));
description.appendChild(document.createTextNode(text));
}
}
}
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