/*******************************************************************************
* Copyright (c) 2004, 2005 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.loader;
import java.util.Hashtable;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.ui.internal.intro.impl.model.IntroStandbyContentPart;
import org.eclipse.ui.internal.intro.impl.model.IntroURLAction;
import org.eclipse.ui.internal.intro.impl.util.Log;
import org.eclipse.ui.internal.intro.impl.util.Util;
/**
* Class for handling all shared Intro Config Extensions. These are StandbyPart
* and Command contributions. Once defined these contributions are visible by
* all intro configs.
*/
public class SharedConfigExtensionsManager {
private IExtensionRegistry registry;
// Holds all standbyPart extensions. Key is id, value is
// IntroStandbyContentPart.
private Hashtable standbyParts = new Hashtable();
// Holds all command extensions. Key is name, value is IntroURLAction.
private Hashtable commands = new Hashtable();
/*
* Prevent creation.
*/
protected SharedConfigExtensionsManager(IExtensionRegistry registry) {
this.registry = registry;
}
/**
* Loads all shared config extennsions (ie: standby parts and commands.
*/
protected void loadSharedConfigExtensions() {
// simply create model classes for all standbyPart elements under a
// configExtension.
long start = 0;
// if we need to log performance, capture time.
if (Log.logPerformance)
start = System.currentTimeMillis();
IConfigurationElement[] configExtensionElements = registry
.getConfigurationElementsFor(BaseExtensionPointManager.CONFIG_EXTENSION);
if (Log.logPerformance)
Util.logPerformanceTime(
"quering registry for configExtensions took: ", start); //$NON-NLS-1$
for (int i = 0; i < configExtensionElements.length; i++) {
IConfigurationElement element = configExtensionElements[i];
if (!ModelLoaderUtil.isValidElementName(element,
IntroStandbyContentPart.TAG_STANDBY_CONTENT_PART)
&& !ModelLoaderUtil.isValidElementName(element,
IntroURLAction.TAG_ACTION))
// if extension is not a standbypart or command, ignore.
continue;
createModelClass(element);
}
}
/**
* Create an intro standby part or an intro command model class.
*
* @param element
*/
private void createModelClass(IConfigurationElement element) {
if (element.getName().equals(
IntroStandbyContentPart.TAG_STANDBY_CONTENT_PART)) {
IntroStandbyContentPart standbyPartContent = new IntroStandbyContentPart(
element);
if (standbyPartContent.getId() == null)
// no id, ignore.
return;
standbyParts.put(standbyPartContent.getId(), standbyPartContent);
} else {
IntroURLAction introURLCommand = new IntroURLAction(element);
if (introURLCommand.getName() == null
|| introURLCommand.getReplaceValue() == null)
// no name or resolvedValue, ignore.
return;
commands.put(introURLCommand.getName(), introURLCommand);
}
}
/**
* @return Returns a standbyPart basd on its registred id.
*/
public IntroStandbyContentPart getStandbyPart(String partId) {
if (partId == null)
return null;
return (IntroStandbyContentPart) standbyParts.get(partId);
}
/**
* @return Returns the command from its name.
*/
public IntroURLAction getCommand(String commandName) {
if (commandName == null)
return null;
return (IntroURLAction) commands.get(commandName);
}
}