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/*******************************************************************************
* Copyright (c) 2004, 2007 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.intro.impl.model.loader;
import org.eclipse.ui.internal.intro.impl.model.ExtensionMap;
import org.eclipse.ui.internal.intro.impl.model.IntroModelRoot;
import org.eclipse.ui.internal.intro.impl.util.Log;
/**
* Manages all Intro plugin extension points. Currently, there are two:
* org.eclipse.ui.intro.config & org.eclipse.ui.intro.configExtension. <br>
* The model is lazily loaded on per need basis. This happens when a page is
* asked for its children, or when the model is trying to resolve includes or
* extensions. <br>
*/
public class ExtensionPointManager extends BaseExtensionPointManager {
// singleton instance. Can be retrieved from here or from the Intro Plugin.
private static ExtensionPointManager inst = new ExtensionPointManager();
// The root model class that represents a full/combined OOBBE config. This
// model is loaded based on an introId when the customizableIntroPart tries
// to load a model based on introId. This is different when includes and
// extension aer resolved because in tnose cases models are being loaded
// given an id and not an introId.
private IntroModelRoot currentModel;
// the id of the intro part contribution who's model (config) we are trying
// to load. The customizableIntroPart loads this id and loads the model that
// is bound to this intro id (ie: has this id as an introId).
private String introId;
/*
* Prevent creation.
*/
private ExtensionPointManager() {
super();
}
/**
* @return Returns the inst.
*/
public static ExtensionPointManager getInst() {
return inst;
}
/**
* Load the intro model given the current intro id.
*/
private void loadCurrentModel() {
currentModel = loadModel(ATT_CONFIG_INTRO_ID, this.introId);
}
/**
* @return Returns the Intro Model root. Note: Prefereed way of getting to
* the intro model root is throught the intro plugin.
*/
public IntroModelRoot getCurrentModel() {
if (currentModel == null)
// we never loaded this model before, or we tried before and we
// failed. Load it. Get the correct config element based on
// config introId, and log any extra contributions.
loadCurrentModel();
return currentModel;
}
/**
* Load an intro model given a config id.
*
* @param configId
* @return
*/
public IntroModelRoot getModel(String configId) {
IntroModelRoot model = getCachedModel(configId);
if (model == null) {
// we never loaded this model before, or we tried before and we
// failed. Load it. Get the correct config element based on
// config id, and log any extra contributions.
model = loadModel(ATT_ID, configId);
}
return model;
}
/**
* @param introPartId
* The introPartId to set.
*/
public void setIntroId(String introId) {
this.introId = introId;
// we do not have to clean model here. remove cached model, if it
// exists.
this.currentModel = null;
}
public void clear() {
currentModel = null;
sharedConfigExtensionsManager = null;
introModels.clear();
ExtensionMap.getInstance().clear();
if (Log.logInfo)
Log.info("Cleared Intro model"); //$NON-NLS-1$
}
}
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