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/*******************************************************************************
* Copyright (c) 2007 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
*******************************************************************************/
package org.eclipse.ui.internal.intro.impl.model;
import java.util.HashMap;
import java.util.Map;
/**
* This package maintains the mapping between extension ids in the registry and extension ids
* as defined in extension files. It also allows a configurer to change the page which will be
* displayed when the welcome screen is shown.
*/
public class ExtensionMap {
private static ExtensionMap instance;
private static String startPage;
private Map<String, String> extensions = new HashMap<>();
private ExtensionMap() {
}
/**
* Get the one and only instance of this class
* @return
*/
static public ExtensionMap getInstance() {
if (instance == null) {
instance = new ExtensionMap();
}
return instance;
}
/**
* Save an association beteen an anchorId and pluginId
* @param anchorId the id of an anchor
* @param pluginId the plugin which contributed that anchor
*/
public void putPluginId(String anchorId, String pluginId) {
if (anchorId != null) {
extensions.put(anchorId, pluginId);
}
}
/**
* Lookup in which plugin
* @param anchorId
* @return the plugin which contributed that anchor
*/
public String getPluginId(String anchorId) {
return (String)extensions.get(anchorId);
}
/**
* Clear the map and content page
*/
public void clear() {
extensions = new HashMap<>();
startPage = null;
}
/**
* called to determine if the configurer has overriden the start page
* @return the new start page or null.
*/
public String getStartPage() {
return startPage;
}
/**
* Allows a configurer to override the page which is displayed when
* the welcome screen is first shown
* @param contentPage
*/
public void setStartPage(String contentPage) {
startPage = contentPage;
}
}
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