org.eclipse.osbp.ecview.core.common.editparts.emf/src/org/eclipse/osbp/ecview/core/common/editpart/emf/CommandSetEditpart.java - osbp/org.eclipse.osbp.ecview.core - Git at Google

 /**
  * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
  * All rights reserved. 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:
  *         Florian Pirchner - Initial implementation
  */
 package org.eclipse.osbp.ecview.core.common.editpart.emf;

 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.osbp.ecview.core.common.editpart.ICommandEditpart;
 import org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart;
 import org.eclipse.osbp.ecview.core.common.editpart.IViewEditpart;
 import org.eclipse.osbp.ecview.core.common.model.core.CoreModelPackage;
 import org.eclipse.osbp.ecview.core.common.model.core.YCommand;
 import org.eclipse.osbp.ecview.core.common.model.core.YCommandSet;
 import org.eclipse.osbp.ecview.core.common.model.core.YView;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 // TODO: Auto-generated Javadoc
 /**
  * Implementation of {@link ICommandSetEditpart}.
  */
 public class CommandSetEditpart extends ElementEditpart<YCommandSet> implements
 		ICommandSetEditpart {

 	/** The Constant LOGGER. */
 	private static final Logger LOGGER = LoggerFactory
 			.getLogger(CommandSetEditpart.class);

 	/** The lock. */
 	private Object lock;

 	/** The active. */
 	private boolean active;

 	/** The commands. */
 	private List<ICommandEditpart> commands;

 	/** The transient commands. */
 	private List<ICommandEditpart> transientCommands;

 	/**
 	 * A default constructor.
 	 */
 	public CommandSetEditpart() {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#getView()
 	 */
 	@Override
 	public IViewEditpart getView() {
 		checkDisposed();

 		YView yView = getModel().getView();
 		return yView != null ? (IViewEditpart) ElementEditpart
 				.findEditPartFor(yView) : null;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#isActive()
 	 */
 	@Override
 	public boolean isActive() {
 		checkDisposed();

 		return active;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#activate()
 	 */
 	@Override
 	public void activate() {
 		checkDisposed();

 		try {
 			getCommands();
 			getTransientCommands();
 		} finally {
 			active = true;
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#addCommand(org.eclipse.osbp.ecview.core.common.editpart.ICommandEditpart)
 	 */
 	@Override
 	public void addCommand(ICommandEditpart command) {
 		try {
 			checkDisposed();

 			// add the element by using the model
 			//
 			YCommandSet yCommandSet = getModel();
 			YCommand yCommand = (YCommand) command.getModel();
 			yCommandSet.addCommand(yCommand);

 			// BEGIN SUPRESS CATCH EXCEPTION
 		} catch (RuntimeException e) {
 			// END SUPRESS CATCH EXCEPTION
 			LOGGER.error("{}", e);
 			throw e;
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#removeCommand(org.eclipse.osbp.ecview.core.common.editpart.ICommandEditpart)
 	 */
 	@Override
 	public void removeCommand(ICommandEditpart command) {
 		try {
 			checkDisposed();

 			// remove the element by using the model
 			//
 			YCommandSet yCommandSet = getModel();
 			YCommand yCommand = (YCommand) command.getModel();
 			yCommandSet.removeCommand(yCommand);
 			// BEGIN SUPRESS CATCH EXCEPTION
 		} catch (RuntimeException e) {
 			// END SUPRESS CATCH EXCEPTION
 			LOGGER.error("{}", e);
 			throw e;
 		}

 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelAdd(int, org.eclipse.emf.common.notify.Notification)
 	 */
 	@Override
 	protected void handleModelAdd(int featureId, Notification notification) {
 		checkDisposed();

 		switch (featureId) {
 		case CoreModelPackage.YCOMMAND_SET__COMMANDS:
 			YCommand yCommand = (YCommand) notification.getNewValue();

 			ICommandEditpart editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
 			internalAddCommand(editPart);
 			break;
 		case CoreModelPackage.YCOMMAND_SET__TRANSIENT_COMMANDS:
 			yCommand = (YCommand) notification.getNewValue();

 			editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
 			internalAddTransientCommand(editPart);
 			break;
 		default:
 			break;
 		}

 	}

 	/**
 	 * Is called to change the internal state and add the given editpart to the
 	 * list of commands.
 	 *
 	 * @param command
 	 *            The editpart to be added
 	 */
 	protected void internalAddCommand(ICommandEditpart command) {
 		checkDisposed();

 		ensureCommandsLoaded();
 		if (!commands.contains(command)) {
 			commands.add(command);

 			// activates the command
 			command.activate();
 		}
 	}

 	/**
 	 * Is called to change the internal state and add the given editpart to the
 	 * list of commands.
 	 *
 	 * @param command
 	 *            The editpart to be added
 	 */
 	protected void internalAddTransientCommand(ICommandEditpart command) {
 		checkDisposed();

 		ensureTransientCommandsLoaded();
 		if (!transientCommands.contains(command)) {
 			transientCommands.add(command);

 			// activates the command
 			command.activate();
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelRemove(int, org.eclipse.emf.common.notify.Notification)
 	 */
 	@Override
 	protected void handleModelRemove(int featureId, Notification notification) {
 		checkDisposed();

 		switch (featureId) {
 		case CoreModelPackage.YCOMMAND_SET__COMMANDS:
 			YCommand yCommand = (YCommand) notification.getOldValue();

 			ICommandEditpart editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
 			internalRemoveCommand(editPart);
 			break;
 		case CoreModelPackage.YCOMMAND_SET__TRANSIENT_COMMANDS:
 			yCommand = (YCommand) notification.getOldValue();

 			editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
 			internalRemoveTransientCommand(editPart);
 			break;
 		default:
 			break;
 		}
 	}

 	/**
 	 * Ensures that the internal commands are loaded properly.
 	 */
 	private void ensureCommandsLoaded() {
 		if (commands == null) {
 			internalLoadCommands();
 		}
 	}

 	/**
 	 * Is called to load and initialize all commands.
 	 */
 	protected void internalLoadCommands() {
 		checkDisposed();

 		if (commands == null) {
 			commands = new ArrayList<ICommandEditpart>();
 			for (YCommand yCommand : getModel().getCommands()) {
 				ICommandEditpart editPart = getEditpart(viewContext, yCommand);
 				internalAddCommand(editPart);
 			}
 		}
 	}

 	/**
 	 * Is called to change the internal state and remove the given editpart from
 	 * the list of commands.
 	 *
 	 * @param command
 	 *            The editpart to be removed
 	 */
 	protected void internalRemoveCommand(ICommandEditpart command) {
 		checkDisposed();

 		if (commands != null && command != null) {
 			commands.remove(command);
 		}

 		// unbinds the command
 		if (command != null) {
 			command.dispose();
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#getCommands()
 	 */
 	@Override
 	public List<ICommandEditpart> getCommands() {
 		ensureCommandsLoaded();
 		return new ArrayList<ICommandEditpart>(commands);
 	}

 	/**
 	 * Ensures that the internal transientCommands are loaded properly.
 	 */
 	private void ensureTransientCommandsLoaded() {
 		if (transientCommands == null) {
 			internalLoadTransientCommands();
 		}
 	}

 	/**
 	 * Is called to load and initialize all transientCommands.
 	 */
 	protected void internalLoadTransientCommands() {
 		checkDisposed();

 		if (transientCommands == null) {
 			transientCommands = new ArrayList<ICommandEditpart>();
 			for (YCommand yCommand : getModel().getTransientCommands()) {
 				ICommandEditpart editPart = getEditpart(viewContext, yCommand);
 				internalAddTransientCommand(editPart);
 			}
 		}
 	}

 	/**
 	 * Is called to change the internal state and remove the given editpart from
 	 * the list of transientCommands.
 	 *
 	 * @param command
 	 *            The editpart to be removed
 	 */
 	protected void internalRemoveTransientCommand(ICommandEditpart command) {
 		checkDisposed();

 		if (transientCommands != null && command != null) {
 			transientCommands.remove(command);
 		}

 		// unbinds the command
 		if (command != null) {
 			command.dispose();
 		}
 	}

 	/**
 	 * Gets the transient commands.
 	 *
 	 * @return the transient commands
 	 */
 	public List<ICommandEditpart> getTransientCommands() {
 		ensureTransientCommandsLoaded();
 		return new ArrayList<ICommandEditpart>(transientCommands);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#internalDispose()
 	 */
 	@Override
 	protected void internalDispose() {
 		try {
 			if (lock != null) {
 				lock = new Object();
 			}
 			synchronized (lock) {
 				// lazy loading: edit parts also have to be disposed if they
 				// have
 				// not been loaded yet, but exist in the model.
 				if (commands != null || !getModel().getCommands().isEmpty()) {
 					List<ICommandEditpart> tempElements = getCommands();
 					for (ICommandEditpart command : tempElements
 							.toArray(new ICommandEditpart[tempElements.size()])) {
 						command.dispose();
 					}
 				}
 				commands = null;

 				if (transientCommands != null
 						|| !getModel().getTransientCommands().isEmpty()) {
 					List<ICommandEditpart> tempElements = getTransientCommands();
 					for (ICommandEditpart command : tempElements
 							.toArray(new ICommandEditpart[tempElements.size()])) {
 						command.dispose();
 					}
 				}
 				transientCommands = null;
 			}
 			lock = null;
 		} finally {
 			super.internalDispose();
 		}
 	}
 }
	/**
	* Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
	* All rights reserved. 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:
	* Florian Pirchner - Initial implementation
	*/
	package org.eclipse.osbp.ecview.core.common.editpart.emf;

	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.osbp.ecview.core.common.editpart.ICommandEditpart;
	import org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart;
	import org.eclipse.osbp.ecview.core.common.editpart.IViewEditpart;
	import org.eclipse.osbp.ecview.core.common.model.core.CoreModelPackage;
	import org.eclipse.osbp.ecview.core.common.model.core.YCommand;
	import org.eclipse.osbp.ecview.core.common.model.core.YCommandSet;
	import org.eclipse.osbp.ecview.core.common.model.core.YView;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	// TODO: Auto-generated Javadoc
	/**
	* Implementation of {@link ICommandSetEditpart}.
	*/
	public class CommandSetEditpart extends ElementEditpart<YCommandSet> implements
	ICommandSetEditpart {

	/** The Constant LOGGER. */
	private static final Logger LOGGER = LoggerFactory
	.getLogger(CommandSetEditpart.class);

	/** The lock. */
	private Object lock;

	/** The active. */
	private boolean active;

	/** The commands. */
	private List<ICommandEditpart> commands;

	/** The transient commands. */
	private List<ICommandEditpart> transientCommands;

	/**
	* A default constructor.
	*/
	public CommandSetEditpart() {
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#getView()
	*/
	@Override
	public IViewEditpart getView() {
	checkDisposed();

	YView yView = getModel().getView();
	return yView != null ? (IViewEditpart) ElementEditpart
	.findEditPartFor(yView) : null;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#isActive()
	*/
	@Override
	public boolean isActive() {
	checkDisposed();

	return active;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#activate()
	*/
	@Override
	public void activate() {
	checkDisposed();

	try {
	getCommands();
	getTransientCommands();
	} finally {
	active = true;
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#addCommand(org.eclipse.osbp.ecview.core.common.editpart.ICommandEditpart)
	*/
	@Override
	public void addCommand(ICommandEditpart command) {
	try {
	checkDisposed();

	// add the element by using the model
	//
	YCommandSet yCommandSet = getModel();
	YCommand yCommand = (YCommand) command.getModel();
	yCommandSet.addCommand(yCommand);

	// BEGIN SUPRESS CATCH EXCEPTION
	} catch (RuntimeException e) {
	// END SUPRESS CATCH EXCEPTION
	LOGGER.error("{}", e);
	throw e;
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#removeCommand(org.eclipse.osbp.ecview.core.common.editpart.ICommandEditpart)
	*/
	@Override
	public void removeCommand(ICommandEditpart command) {
	try {
	checkDisposed();

	// remove the element by using the model
	//
	YCommandSet yCommandSet = getModel();
	YCommand yCommand = (YCommand) command.getModel();
	yCommandSet.removeCommand(yCommand);
	// BEGIN SUPRESS CATCH EXCEPTION
	} catch (RuntimeException e) {
	// END SUPRESS CATCH EXCEPTION
	LOGGER.error("{}", e);
	throw e;
	}

	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelAdd(int, org.eclipse.emf.common.notify.Notification)
	*/
	@Override
	protected void handleModelAdd(int featureId, Notification notification) {
	checkDisposed();

	switch (featureId) {
	case CoreModelPackage.YCOMMAND_SET__COMMANDS:
	YCommand yCommand = (YCommand) notification.getNewValue();

	ICommandEditpart editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
	internalAddCommand(editPart);
	break;
	case CoreModelPackage.YCOMMAND_SET__TRANSIENT_COMMANDS:
	yCommand = (YCommand) notification.getNewValue();

	editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
	internalAddTransientCommand(editPart);
	break;
	default:
	break;
	}

	}

	/**
	* Is called to change the internal state and add the given editpart to the
	* list of commands.
	*
	* @param command
	* The editpart to be added
	*/
	protected void internalAddCommand(ICommandEditpart command) {
	checkDisposed();

	ensureCommandsLoaded();
	if (!commands.contains(command)) {
	commands.add(command);

	// activates the command
	command.activate();
	}
	}

	/**
	* Is called to change the internal state and add the given editpart to the
	* list of commands.
	*
	* @param command
	* The editpart to be added
	*/
	protected void internalAddTransientCommand(ICommandEditpart command) {
	checkDisposed();

	ensureTransientCommandsLoaded();
	if (!transientCommands.contains(command)) {
	transientCommands.add(command);

	// activates the command
	command.activate();
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelRemove(int, org.eclipse.emf.common.notify.Notification)
	*/
	@Override
	protected void handleModelRemove(int featureId, Notification notification) {
	checkDisposed();

	switch (featureId) {
	case CoreModelPackage.YCOMMAND_SET__COMMANDS:
	YCommand yCommand = (YCommand) notification.getOldValue();

	ICommandEditpart editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
	internalRemoveCommand(editPart);
	break;
	case CoreModelPackage.YCOMMAND_SET__TRANSIENT_COMMANDS:
	yCommand = (YCommand) notification.getOldValue();

	editPart = (ICommandEditpart) getEditpart(viewContext, yCommand);
	internalRemoveTransientCommand(editPart);
	break;
	default:
	break;
	}
	}

	/**
	* Ensures that the internal commands are loaded properly.
	*/
	private void ensureCommandsLoaded() {
	if (commands == null) {
	internalLoadCommands();
	}
	}

	/**
	* Is called to load and initialize all commands.
	*/
	protected void internalLoadCommands() {
	checkDisposed();

	if (commands == null) {
	commands = new ArrayList<ICommandEditpart>();
	for (YCommand yCommand : getModel().getCommands()) {
	ICommandEditpart editPart = getEditpart(viewContext, yCommand);
	internalAddCommand(editPart);
	}
	}
	}

	/**
	* Is called to change the internal state and remove the given editpart from
	* the list of commands.
	*
	* @param command
	* The editpart to be removed
	*/
	protected void internalRemoveCommand(ICommandEditpart command) {
	checkDisposed();

	if (commands != null && command != null) {
	commands.remove(command);
	}

	// unbinds the command
	if (command != null) {
	command.dispose();
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.ICommandSetEditpart#getCommands()
	*/
	@Override
	public List<ICommandEditpart> getCommands() {
	ensureCommandsLoaded();
	return new ArrayList<ICommandEditpart>(commands);
	}

	/**
	* Ensures that the internal transientCommands are loaded properly.
	*/
	private void ensureTransientCommandsLoaded() {
	if (transientCommands == null) {
	internalLoadTransientCommands();
	}
	}

	/**
	* Is called to load and initialize all transientCommands.
	*/
	protected void internalLoadTransientCommands() {
	checkDisposed();

	if (transientCommands == null) {
	transientCommands = new ArrayList<ICommandEditpart>();
	for (YCommand yCommand : getModel().getTransientCommands()) {
	ICommandEditpart editPart = getEditpart(viewContext, yCommand);
	internalAddTransientCommand(editPart);
	}
	}
	}

	/**
	* Is called to change the internal state and remove the given editpart from
	* the list of transientCommands.
	*
	* @param command
	* The editpart to be removed
	*/
	protected void internalRemoveTransientCommand(ICommandEditpart command) {
	checkDisposed();

	if (transientCommands != null && command != null) {
	transientCommands.remove(command);
	}

	// unbinds the command
	if (command != null) {
	command.dispose();
	}
	}

	/**
	* Gets the transient commands.
	*
	* @return the transient commands
	*/
	public List<ICommandEditpart> getTransientCommands() {
	ensureTransientCommandsLoaded();
	return new ArrayList<ICommandEditpart>(transientCommands);
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#internalDispose()
	*/
	@Override
	protected void internalDispose() {
	try {
	if (lock != null) {
	lock = new Object();
	}
	synchronized (lock) {
	// lazy loading: edit parts also have to be disposed if they
	// have
	// not been loaded yet, but exist in the model.
	if (commands != null \|\| !getModel().getCommands().isEmpty()) {
	List<ICommandEditpart> tempElements = getCommands();
	for (ICommandEditpart command : tempElements
	.toArray(new ICommandEditpart[tempElements.size()])) {
	command.dispose();
	}
	}
	commands = null;

	if (transientCommands != null
	\|\| !getModel().getTransientCommands().isEmpty()) {
	List<ICommandEditpart> tempElements = getTransientCommands();
	for (ICommandEditpart command : tempElements
	.toArray(new ICommandEditpart[tempElements.size()])) {
	command.dispose();
	}
	}
	transientCommands = null;
	}
	lock = null;
	} finally {
	super.internalDispose();
	}
	}
	}