org.eclipse.osbp.ecview.extension.presentation.vaadin/src/org/eclipse/osbp/ecview/extension/presentation/vaadin/strategy/StrategyLayoutPresentation.java - osbp/org.eclipse.osbp.ecview.extension - Git at Google

 /**
  *
  *  Copyright (c) 2011, 2016 - 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 v1.0
  *  which accompanies this distribution, and is available at
  *  http://www.eclipse.org/legal/epl-v10.html
  *
  *  Contributors:
  * 	   Florian Pirchner - Initial implementation
  *
  */
 package org.eclipse.osbp.ecview.extension.presentation.vaadin.strategy;

 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;

 import org.eclipse.osbp.ecview.core.common.editpart.IElementEditpart;
 import org.eclipse.osbp.ecview.core.common.editpart.IEmbeddableEditpart;
 import org.eclipse.osbp.ecview.core.common.editpart.IKeyStrokeDefinitionEditpart;
 import org.eclipse.osbp.ecview.core.common.model.core.YAlignment;
 import org.eclipse.osbp.ecview.extension.editparts.IStrategyLayoutEditpart;
 import org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation;
 import org.eclipse.osbp.ecview.extension.model.YStrategyLayout;
 import org.eclipse.osbp.runtime.common.keystroke.KeyStrokeCallback;
 import org.eclipse.osbp.runtime.common.keystroke.KeyStrokeDefinition;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.IConstants;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractEmbeddedWidgetPresenter;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 import com.vaadin.event.ActionManager;
 import com.vaadin.event.ShortcutListener;
 import com.vaadin.ui.AbstractComponent;
 import com.vaadin.ui.Component;
 import com.vaadin.ui.Panel;
 import com.vaadin.ui.VerticalLayout;

 /**
  * This presenter is responsible to render a text field on the given layout.
  */
 public class StrategyLayoutPresentation extends
 		AbstractEmbeddedWidgetPresenter<Panel> implements
 		IStrategyLayoutPresentation<Panel> {

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

 	/** The root panel. */
 	private Panel rootPanel;

 	/** The root layout. */
 	private VerticalLayout rootLayout;

 	/** The model access. */
 	private ModelAccess modelAccess;

 	/** The content editpart. */
 	private IEmbeddableEditpart contentEditpart;

 	/** The callbacks. */
 	private Map<KeyStrokeCallback, ShortcutListener> callbacks;

 	/**
 	 * The constructor.
 	 *
 	 * @param editpart
 	 *            The editpart of that editpart.
 	 */
 	public StrategyLayoutPresentation(IElementEditpart editpart) {
 		super((IStrategyLayoutEditpart) editpart);
 		this.modelAccess = new ModelAccess(
 				(YStrategyLayout) editpart.getModel());
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doUpdateLocale(java.util.Locale)
 	 */
 	@Override
 	protected void doUpdateLocale(Locale locale) {
 		// no need to set the locale to the ui elements. Is handled by vaadin
 		// internally.

 		// update the captions
 		applyCaptions();
 	}

 	/**
 	 * Applies the labels to the widgets.
 	 */
 	protected void applyCaptions() {
 	}

 	/**
 	 * Is called to refresh the UI. The element will be removed from the layout
 	 * and added to it again afterwards.
 	 */
 	protected void refreshUI() {
 		rootLayout.removeAllComponents();

 		if (contentEditpart != null) {
 			Component contentComp = (Component) contentEditpart
 					.render(rootLayout);
 			rootLayout.addComponent(contentComp);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation#registerKeyStroke(org.eclipse.osbp.ecview.core.common.editpart.IKeyStrokeDefinitionEditpart, org.eclipse.osbp.runtime.common.keystroke.KeyStrokeCallback)
 	 */
 	@SuppressWarnings("serial")
 	@Override
 	public void registerKeyStroke(
 			IKeyStrokeDefinitionEditpart keyStrokeDefEditpart,
 			final KeyStrokeCallback callback) {

 		if (callbacks != null && callbacks.containsKey(callback)) {
 			return;
 		}

 		KeyStrokeDefinition def = keyStrokeDefEditpart.getDefinition();
 		ShortcutListener listener = new ShortcutListener(def.getCaption(),
 				def.getKeyCode(), def.getModifierKeys()) {
 			@Override
 			public void handleAction(Object sender, Object target) {
 				callback.callback(sender, target);
 			}
 		};

 		if (callbacks == null) {
 			callbacks = new HashMap<KeyStrokeCallback, ShortcutListener>();
 		}
 		callbacks.put(callback, listener);

 		if (isRendered()) {
 			// TODO change me later when bug is fixed
 			// visibility bug in Vaadin. 2 actionManager instances available
 			// for add and remove.
 			ActionManager manager = getActionManager();
 			manager.addAction(listener);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation#unregisterKeyStroke(org.eclipse.osbp.runtime.common.keystroke.KeyStrokeCallback)
 	 */
 	@Override
 	public void unregisterKeyStroke(KeyStrokeCallback callback) {
 		ShortcutListener listener = callbacks.remove(callback);
 		if (listener != null) {
 			if (callbacks != null) {
 				callbacks.remove(callback);
 			}
 			if (isRendered()) {
 				// TODO change me later when bug is fixed
 				// visibility bug in Vaadin. 2 actionManager instances available
 				// for add and remove.
 				ActionManager manager = getActionManager();
 				manager.removeAction(listener);
 			}
 		}
 	}

 	/**
 	 * Temporary for Vaadin bug.
 	 *
 	 * @return the action manager
 	 */
 	protected ActionManager getActionManager() {
 		ActionManager actionManager = null;
 		try {
 			Method m = AbstractComponent.class.getDeclaredMethod(
 					"getActionManager", new Class[0]);
 			if (!m.isAccessible()) {
 				m.setAccessible(true);
 			}
 			actionManager = (ActionManager) m.invoke(rootPanel, new Object[0]);
 		} catch (NoSuchMethodException e) {
 			LOGGER.error("{}", e);
 		} catch (IllegalAccessException e) {
 			LOGGER.error("{}", e);
 		} catch (InvocationTargetException e) {
 				LOGGER.error("{}", e);		}
 		return actionManager;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doCreateWidget(java.lang.Object)
 	 */
 	@Override
 	public Panel doCreateWidget(Object parent) {
 		if (rootPanel == null) {
 			rootPanel = new Panel();
 			rootLayout = new VerticalLayout();
 			rootPanel.setContent(rootLayout);
 			rootPanel.setSizeFull();
 			rootLayout.setSizeFull();
 			setupComponent(rootLayout, getCastedModel());

 			associateWidget(rootLayout, modelAccess.yLayout);

 			if (modelAccess.isCssIdValid()) {
 				rootLayout.setId(modelAccess.getCssID());
 			} else {
 				rootLayout.setId(getEditpart().getId());
 			}

 			if (modelAccess.isMargin()) {
 				rootLayout.addStyleName(IConstants.CSS_CLASS_MARGIN);
 				rootLayout.setMargin(true);
 			}

 			if (!modelAccess.isSpacing()) {
 				rootLayout.setSpacing(false);
 			} else {
 				rootLayout.addStyleName(IConstants.CSS_CLASS_SPACING);
 				rootLayout.setSpacing(true);
 			}

 			if (modelAccess.isCssClassValid()) {
 				rootLayout.addStyleName(modelAccess.getCssClass());
 			} else {
 				rootLayout.addStyleName(CSS_CLASS_CONTROL);
 			}
 			rootLayout.addStyleName(IConstants.CSS_CLASS_HORIZONTALLAYOUT);

 			// creates the binding for the field
 			createBindings(modelAccess.yLayout, rootLayout, null);

 			// activate callbacks
 			if (callbacks != null) {
 				ActionManager manager = getActionManager();
 				for (ShortcutListener listener : callbacks.values()) {
 					manager.addAction(listener);
 				}
 			}

 			// and now render children
 			renderChildren(false);
 		}

 		return rootPanel;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation#setContent(org.eclipse.osbp.ecview.core.common.editpart.IEmbeddableEditpart)
 	 */
 	@Override
 	public void setContent(IEmbeddableEditpart contentEditpart) {
 		if (this.contentEditpart == contentEditpart) {
 			return;
 		}

 		if (this.contentEditpart != null) {
 			this.contentEditpart.requestUnrender();
 		}

 		this.contentEditpart = contentEditpart;

 		if (isRendered() && this.contentEditpart != null) {
 			refreshUI();
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#getWidget()
 	 */
 	@Override
 	public Panel getWidget() {
 		return rootPanel;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#isRendered()
 	 */
 	@Override
 	public boolean isRendered() {
 		return rootPanel != null;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#internalDispose()
 	 */
 	@Override
 	protected void internalDispose() {
 		try {
 			unrender();

 			if (callbacks != null) {
 				callbacks.clear();
 				callbacks = null;
 			}
 		} finally {
 			super.internalDispose();
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doUnrender()
 	 */
 	@Override
 	public void doUnrender() {
 		if (rootPanel != null) {

 			// unbind all active bindings
 			unbind();

 			// remove assocations
 			unassociateWidget(rootPanel);

 			// unrender the children
 			unrenderContent();

 			if (callbacks != null) {
 				ActionManager manager = getActionManager();
 				for (ShortcutListener listener : callbacks.values()) {
 					manager.removeAction(listener);
 				}
 			}

 			rootLayout.removeAllComponents();
 			rootPanel = null;
 			rootLayout = null;
 		}
 	}

 	/**
 	 * Render children.
 	 *
 	 * @param force
 	 *            the force
 	 */
 	public void renderChildren(boolean force) {
 		if (force) {
 			unrenderContent();
 		}

 		refreshUI();
 	}

 	/**
 	 * Will unrender the content.
 	 */
 	protected void unrenderContent() {
 		if (contentEditpart != null && contentEditpart.isRendered()) {
 			contentEditpart.requestUnrender();
 		}
 	}

 	/**
 	 * An internal helper class.
 	 */
 	private static class ModelAccess {

 		/** The y layout. */
 		private final YStrategyLayout yLayout;

 		/**
 		 * Instantiates a new model access.
 		 *
 		 * @param yLayout
 		 *            the y layout
 		 */
 		public ModelAccess(YStrategyLayout yLayout) {
 			super();
 			this.yLayout = yLayout;
 		}

 		/**
 		 * Gets the css class.
 		 *
 		 * @return the css class
 		 * @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssClass()
 		 */
 		public String getCssClass() {
 			return yLayout.getCssClass();
 		}

 		/**
 		 * Returns true, if the css class is not null and not empty.
 		 *
 		 * @return true, if is css class valid
 		 */
 		public boolean isCssClassValid() {
 			return getCssClass() != null && !getCssClass().equals("");
 		}

 		/**
 		 * Checks if is spacing.
 		 *
 		 * @return true, if is spacing
 		 * @see org.eclipse.osbp.ecview.core.ui.core.model.extension.YStrategyLayout#isSpacing()
 		 */
 		public boolean isSpacing() {
 			return false;
 		}

 		/**
 		 * Gets the css id.
 		 *
 		 * @return the css id
 		 * @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssID()
 		 */
 		public String getCssID() {
 			return yLayout.getCssID();
 		}

 		/**
 		 * Returns true, if the css id is not null and not empty.
 		 *
 		 * @return true, if is css id valid
 		 */
 		public boolean isCssIdValid() {
 			return getCssID() != null && !getCssID().equals("");
 		}

 		/**
 		 * Checks if is margin.
 		 *
 		 * @return true, if is margin
 		 * @see org.eclipse.osbp.ecview.core.ui.core.model.extension.YStrategyLayout#isMargin()
 		 */
 		public boolean isMargin() {
 			return false;
 		}
 	}

 	/**
 	 * The Class Cell.
 	 */
 	public static class Cell {

 		/** The component. */
 		private final Component component;

 		/** The alignment. */
 		private final YAlignment alignment;

 		/**
 		 * Instantiates a new cell.
 		 *
 		 * @param component
 		 *            the component
 		 * @param alignment
 		 *            the alignment
 		 */
 		public Cell(Component component, YAlignment alignment) {
 			super();
 			this.component = component;
 			this.alignment = alignment;
 		}

 		/**
 		 * Gets the component.
 		 *
 		 * @return the component
 		 */
 		protected Component getComponent() {
 			return component;
 		}

 		/**
 		 * Gets the alignment.
 		 *
 		 * @return the alignment
 		 */
 		protected YAlignment getAlignment() {
 			return alignment;
 		}

 		/**
 		 * Checks if is expand vertical.
 		 *
 		 * @return true, if is expand vertical
 		 */
 		protected boolean isExpandVertical() {
 			switch (alignment) {
 			case FILL_CENTER:
 			case FILL_FILL:
 			case FILL_LEFT:
 			case FILL_RIGHT:
 				return true;
 			default:
 				return false;
 			}
 		}

 		/**
 		 * Checks if is expand horizontal.
 		 *
 		 * @return true, if is expand horizontal
 		 */
 		protected boolean isExpandHorizontal() {
 			switch (alignment) {
 			case BOTTOM_FILL:
 			case FILL_FILL:
 			case MIDDLE_FILL:
 			case TOP_FILL:
 				return true;
 			default:
 				return false;
 			}
 		}
 	}
 }
	/**
	*
	* Copyright (c) 2011, 2016 - 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 v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Florian Pirchner - Initial implementation
	*
	*/
	package org.eclipse.osbp.ecview.extension.presentation.vaadin.strategy;

	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Method;
	import java.util.HashMap;
	import java.util.Locale;
	import java.util.Map;

	import org.eclipse.osbp.ecview.core.common.editpart.IElementEditpart;
	import org.eclipse.osbp.ecview.core.common.editpart.IEmbeddableEditpart;
	import org.eclipse.osbp.ecview.core.common.editpart.IKeyStrokeDefinitionEditpart;
	import org.eclipse.osbp.ecview.core.common.model.core.YAlignment;
	import org.eclipse.osbp.ecview.extension.editparts.IStrategyLayoutEditpart;
	import org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation;
	import org.eclipse.osbp.ecview.extension.model.YStrategyLayout;
	import org.eclipse.osbp.runtime.common.keystroke.KeyStrokeCallback;
	import org.eclipse.osbp.runtime.common.keystroke.KeyStrokeDefinition;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.IConstants;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractEmbeddedWidgetPresenter;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	import com.vaadin.event.ActionManager;
	import com.vaadin.event.ShortcutListener;
	import com.vaadin.ui.AbstractComponent;
	import com.vaadin.ui.Component;
	import com.vaadin.ui.Panel;
	import com.vaadin.ui.VerticalLayout;

	/**
	* This presenter is responsible to render a text field on the given layout.
	*/
	public class StrategyLayoutPresentation extends
	AbstractEmbeddedWidgetPresenter<Panel> implements
	IStrategyLayoutPresentation<Panel> {

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

	/** The root panel. */
	private Panel rootPanel;

	/** The root layout. */
	private VerticalLayout rootLayout;

	/** The model access. */
	private ModelAccess modelAccess;

	/** The content editpart. */
	private IEmbeddableEditpart contentEditpart;

	/** The callbacks. */
	private Map<KeyStrokeCallback, ShortcutListener> callbacks;

	/**
	* The constructor.
	*
	* @param editpart
	* The editpart of that editpart.
	*/
	public StrategyLayoutPresentation(IElementEditpart editpart) {
	super((IStrategyLayoutEditpart) editpart);
	this.modelAccess = new ModelAccess(
	(YStrategyLayout) editpart.getModel());
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doUpdateLocale(java.util.Locale)
	*/
	@Override
	protected void doUpdateLocale(Locale locale) {
	// no need to set the locale to the ui elements. Is handled by vaadin
	// internally.

	// update the captions
	applyCaptions();
	}

	/**
	* Applies the labels to the widgets.
	*/
	protected void applyCaptions() {
	}

	/**
	* Is called to refresh the UI. The element will be removed from the layout
	* and added to it again afterwards.
	*/
	protected void refreshUI() {
	rootLayout.removeAllComponents();

	if (contentEditpart != null) {
	Component contentComp = (Component) contentEditpart
	.render(rootLayout);
	rootLayout.addComponent(contentComp);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation#registerKeyStroke(org.eclipse.osbp.ecview.core.common.editpart.IKeyStrokeDefinitionEditpart, org.eclipse.osbp.runtime.common.keystroke.KeyStrokeCallback)
	*/
	@SuppressWarnings("serial")
	@Override
	public void registerKeyStroke(
	IKeyStrokeDefinitionEditpart keyStrokeDefEditpart,
	final KeyStrokeCallback callback) {

	if (callbacks != null && callbacks.containsKey(callback)) {
	return;
	}

	KeyStrokeDefinition def = keyStrokeDefEditpart.getDefinition();
	ShortcutListener listener = new ShortcutListener(def.getCaption(),
	def.getKeyCode(), def.getModifierKeys()) {
	@Override
	public void handleAction(Object sender, Object target) {
	callback.callback(sender, target);
	}
	};

	if (callbacks == null) {
	callbacks = new HashMap<KeyStrokeCallback, ShortcutListener>();
	}
	callbacks.put(callback, listener);

	if (isRendered()) {
	// TODO change me later when bug is fixed
	// visibility bug in Vaadin. 2 actionManager instances available
	// for add and remove.
	ActionManager manager = getActionManager();
	manager.addAction(listener);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation#unregisterKeyStroke(org.eclipse.osbp.runtime.common.keystroke.KeyStrokeCallback)
	*/
	@Override
	public void unregisterKeyStroke(KeyStrokeCallback callback) {
	ShortcutListener listener = callbacks.remove(callback);
	if (listener != null) {
	if (callbacks != null) {
	callbacks.remove(callback);
	}
	if (isRendered()) {
	// TODO change me later when bug is fixed
	// visibility bug in Vaadin. 2 actionManager instances available
	// for add and remove.
	ActionManager manager = getActionManager();
	manager.removeAction(listener);
	}
	}
	}

	/**
	* Temporary for Vaadin bug.
	*
	* @return the action manager
	*/
	protected ActionManager getActionManager() {
	ActionManager actionManager = null;
	try {
	Method m = AbstractComponent.class.getDeclaredMethod(
	"getActionManager", new Class[0]);
	if (!m.isAccessible()) {
	m.setAccessible(true);
	}
	actionManager = (ActionManager) m.invoke(rootPanel, new Object[0]);
	} catch (NoSuchMethodException e) {
	LOGGER.error("{}", e);
	} catch (IllegalAccessException e) {
	LOGGER.error("{}", e);
	} catch (InvocationTargetException e) {
	LOGGER.error("{}", e); }
	return actionManager;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doCreateWidget(java.lang.Object)
	*/
	@Override
	public Panel doCreateWidget(Object parent) {
	if (rootPanel == null) {
	rootPanel = new Panel();
	rootLayout = new VerticalLayout();
	rootPanel.setContent(rootLayout);
	rootPanel.setSizeFull();
	rootLayout.setSizeFull();
	setupComponent(rootLayout, getCastedModel());

	associateWidget(rootLayout, modelAccess.yLayout);

	if (modelAccess.isCssIdValid()) {
	rootLayout.setId(modelAccess.getCssID());
	} else {
	rootLayout.setId(getEditpart().getId());
	}

	if (modelAccess.isMargin()) {
	rootLayout.addStyleName(IConstants.CSS_CLASS_MARGIN);
	rootLayout.setMargin(true);
	}

	if (!modelAccess.isSpacing()) {
	rootLayout.setSpacing(false);
	} else {
	rootLayout.addStyleName(IConstants.CSS_CLASS_SPACING);
	rootLayout.setSpacing(true);
	}

	if (modelAccess.isCssClassValid()) {
	rootLayout.addStyleName(modelAccess.getCssClass());
	} else {
	rootLayout.addStyleName(CSS_CLASS_CONTROL);
	}
	rootLayout.addStyleName(IConstants.CSS_CLASS_HORIZONTALLAYOUT);

	// creates the binding for the field
	createBindings(modelAccess.yLayout, rootLayout, null);

	// activate callbacks
	if (callbacks != null) {
	ActionManager manager = getActionManager();
	for (ShortcutListener listener : callbacks.values()) {
	manager.addAction(listener);
	}
	}

	// and now render children
	renderChildren(false);
	}

	return rootPanel;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.extension.editparts.presentation.IStrategyLayoutPresentation#setContent(org.eclipse.osbp.ecview.core.common.editpart.IEmbeddableEditpart)
	*/
	@Override
	public void setContent(IEmbeddableEditpart contentEditpart) {
	if (this.contentEditpart == contentEditpart) {
	return;
	}

	if (this.contentEditpart != null) {
	this.contentEditpart.requestUnrender();
	}

	this.contentEditpart = contentEditpart;

	if (isRendered() && this.contentEditpart != null) {
	refreshUI();
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#getWidget()
	*/
	@Override
	public Panel getWidget() {
	return rootPanel;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#isRendered()
	*/
	@Override
	public boolean isRendered() {
	return rootPanel != null;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#internalDispose()
	*/
	@Override
	protected void internalDispose() {
	try {
	unrender();

	if (callbacks != null) {
	callbacks.clear();
	callbacks = null;
	}
	} finally {
	super.internalDispose();
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doUnrender()
	*/
	@Override
	public void doUnrender() {
	if (rootPanel != null) {

	// unbind all active bindings
	unbind();

	// remove assocations
	unassociateWidget(rootPanel);

	// unrender the children
	unrenderContent();

	if (callbacks != null) {
	ActionManager manager = getActionManager();
	for (ShortcutListener listener : callbacks.values()) {
	manager.removeAction(listener);
	}
	}

	rootLayout.removeAllComponents();
	rootPanel = null;
	rootLayout = null;
	}
	}

	/**
	* Render children.
	*
	* @param force
	* the force
	*/
	public void renderChildren(boolean force) {
	if (force) {
	unrenderContent();
	}

	refreshUI();
	}

	/**
	* Will unrender the content.
	*/
	protected void unrenderContent() {
	if (contentEditpart != null && contentEditpart.isRendered()) {
	contentEditpart.requestUnrender();
	}
	}

	/**
	* An internal helper class.
	*/
	private static class ModelAccess {

	/** The y layout. */
	private final YStrategyLayout yLayout;

	/**
	* Instantiates a new model access.
	*
	* @param yLayout
	* the y layout
	*/
	public ModelAccess(YStrategyLayout yLayout) {
	super();
	this.yLayout = yLayout;
	}

	/**
	* Gets the css class.
	*
	* @return the css class
	* @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssClass()
	*/
	public String getCssClass() {
	return yLayout.getCssClass();
	}

	/**
	* Returns true, if the css class is not null and not empty.
	*
	* @return true, if is css class valid
	*/
	public boolean isCssClassValid() {
	return getCssClass() != null && !getCssClass().equals("");
	}

	/**
	* Checks if is spacing.
	*
	* @return true, if is spacing
	* @see org.eclipse.osbp.ecview.core.ui.core.model.extension.YStrategyLayout#isSpacing()
	*/
	public boolean isSpacing() {
	return false;
	}

	/**
	* Gets the css id.
	*
	* @return the css id
	* @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssID()
	*/
	public String getCssID() {
	return yLayout.getCssID();
	}

	/**
	* Returns true, if the css id is not null and not empty.
	*
	* @return true, if is css id valid
	*/
	public boolean isCssIdValid() {
	return getCssID() != null && !getCssID().equals("");
	}

	/**
	* Checks if is margin.
	*
	* @return true, if is margin
	* @see org.eclipse.osbp.ecview.core.ui.core.model.extension.YStrategyLayout#isMargin()
	*/
	public boolean isMargin() {
	return false;
	}
	}

	/**
	* The Class Cell.
	*/
	public static class Cell {

	/** The component. */
	private final Component component;

	/** The alignment. */
	private final YAlignment alignment;

	/**
	* Instantiates a new cell.
	*
	* @param component
	* the component
	* @param alignment
	* the alignment
	*/
	public Cell(Component component, YAlignment alignment) {
	super();
	this.component = component;
	this.alignment = alignment;
	}

	/**
	* Gets the component.
	*
	* @return the component
	*/
	protected Component getComponent() {
	return component;
	}

	/**
	* Gets the alignment.
	*
	* @return the alignment
	*/
	protected YAlignment getAlignment() {
	return alignment;
	}

	/**
	* Checks if is expand vertical.
	*
	* @return true, if is expand vertical
	*/
	protected boolean isExpandVertical() {
	switch (alignment) {
	case FILL_CENTER:
	case FILL_FILL:
	case FILL_LEFT:
	case FILL_RIGHT:
	return true;
	default:
	return false;
	}
	}

	/**
	* Checks if is expand horizontal.
	*
	* @return true, if is expand horizontal
	*/
	protected boolean isExpandHorizontal() {
	switch (alignment) {
	case BOTTOM_FILL:
	case FILL_FILL:
	case MIDDLE_FILL:
	case TOP_FILL:
	return true;
	default:
	return false;
	}
	}
	}
	}