org.eclipse.osbp.vaadin.addons.designer.overlay/src/org/eclipse/osbp/vaadin/addons/designer/overlay/client/ODesignerOverlay.java

/**
 *                                                                            
 * 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 <florian.pirchner@gmail.com> - Initial implementation
 */
package org.eclipse.osbp.vaadin.addons.designer.overlay.client;

import org.eclipse.osbp.vaadin.addons.designer.overlay.client.widgets.AlignmentInfo;
import org.eclipse.osbp.vaadin.addons.designer.overlay.client.widgets.OAlignmentWidget;
import org.eclipse.osbp.vaadin.addons.designer.overlay.client.widgets.OButtonWidget;

import com.google.gwt.user.client.ui.FlowPanel;
import com.vaadin.client.ui.VImage;
import com.vaadin.shared.ComponentConstants;

/**
 * Overlay for designer stuff.
 */
public class ODesignerOverlay extends OAbstractOverlay {

	/** The Constant CLASSNAME. */
	private static final String CLASSNAME = "o-designer-overlay";

	/** The alignment widget. */
	private OAlignmentWidget alignmentWidget;

	/** The remove button. */
	private OButtonWidget removeButton;

	/** The root. */
	private FlowPanel root;

	/** The editable button. */
	private OButtonWidget editableButton;

	/** The open properties button. */
	private OButtonWidget openPropertiesButton;

	/** The margin button. */
	private OButtonWidget marginButton;

	/** The spacing button. */
	private OButtonWidget spacingButton;

	/** The add button. */
	private OButtonWidget addButton;

	/**
	 * Shows alignment lines for drag and resize operations.
	 */
	public ODesignerOverlay() {

		getElement().setClassName(CLASSNAME);
	}

	/**
	 * Initialize.
	 *
	 * @param connector the connector
	 */
	private void initialize(DesignerExtensionConnector connector) {
		root = new FlowPanel();
		add(root);

		if (connector.getResourceUrl(ComponentConstants.ICON_RESOURCE) != null) {
			VImage image = new VImage();
			root.add(image);
			String iconUrl = connector.getResourceUrl(ComponentConstants.ICON_RESOURCE);
			image.setUrl(iconUrl);
		}

		if (connector.getState().supportsAlignments) {
			alignmentWidget = new OAlignmentWidget();
			alignmentWidget.setTitle(connector.getState().descriptionAlignments);
			root.add(alignmentWidget);
			alignmentWidget.setAlignmentChangedHandler(connector);
		}

		if (connector.getState().supportsMargins) {
			marginButton = new OButtonWidget();
			marginButton.addStyleName(OIConstants.EVENT_TYPE__SWITCH_MARGIN);
			marginButton.setCustomEventType(OIConstants.EVENT_TYPE__SWITCH_MARGIN);
			marginButton.setTitle(connector.getState().descriptionMargins);
			root.add(marginButton);
			marginButton.setClickHandler(connector);
		}
		if (connector.getState().supportsSpacing) {
			spacingButton = new OButtonWidget();
			spacingButton.addStyleName(OIConstants.EVENT_TYPE__SWITCH_SPACING);
			spacingButton.setCustomEventType(OIConstants.EVENT_TYPE__SWITCH_SPACING);
			spacingButton.setTitle(connector.getState().descriptionSpacing);
			root.add(spacingButton);
			spacingButton.setClickHandler(connector);
		}

		if (connector.getState().supportsEditable) {
			editableButton = new OButtonWidget();
			editableButton.addStyleName(OIConstants.EVENT_TYPE__SWITCH_EDITABLE);
			editableButton.setCustomEventType(OIConstants.EVENT_TYPE__SWITCH_EDITABLE);
			editableButton.setTitle(connector.getState().descriptionEditable);
			root.add(editableButton);
			editableButton.setClickHandler(connector);
		}

		if (connector.getState().supportsRemove) {
			removeButton = new OButtonWidget();
			removeButton.addStyleName(OIConstants.EVENT_TYPE__REMOVE_CHILD);
			removeButton.setCustomEventType(OIConstants.EVENT_TYPE__REMOVE_CHILD);
			removeButton.setTitle(connector.getState().descriptionRemove);
			root.add(removeButton);
			removeButton.setClickHandler(connector);
		}

		if (connector.getState().supportsAdd) {
			addButton = new OButtonWidget();
			addButton.addStyleName(OIConstants.EVENT_TYPE__ADD_CHILD);
			addButton.setCustomEventType(OIConstants.EVENT_TYPE__ADD_CHILD);
			addButton.setTitle(connector.getState().descriptionAdd);
			root.add(addButton);
			addButton.setClickHandler(connector);
		}

		if (connector.getState().supportsPropertiesDialog) {
			openPropertiesButton = new OButtonWidget();
			openPropertiesButton.addStyleName(OIConstants.EVENT_TYPE__OPEN_PROPERTIES);
			openPropertiesButton.setCustomEventType(OIConstants.EVENT_TYPE__OPEN_PROPERTIES);
			openPropertiesButton.setTitle(connector.getState().descriptionPropertiesDialog);
			root.add(openPropertiesButton);
			openPropertiesButton.setClickHandler(connector);
		}
	}

	/**
	 * Sets the connector.
	 *
	 * @param connector the new connector
	 */
	public void setConnector(DesignerExtensionConnector connector) {
		initialize(connector);
	}

	/**
	 * Sets the alignment info.
	 *
	 * @param alignment the new alignment info
	 */
	public void setAlignmentInfo(AlignmentInfo alignment) {
		if(alignmentWidget != null) {
			alignmentWidget.setAlignmentInfo(alignment);
		}
	}

	/**
	 * Destroy.
	 */
	public void destroy() {
		if (alignmentWidget != null) {
			alignmentWidget.destroy();
		}
		if (editableButton != null) {
			editableButton.destroy();
		}
		if (removeButton != null) {
			removeButton.destroy();
		}
		if (addButton != null) {
			addButton.destroy();
		}
		if (openPropertiesButton != null) {
			openPropertiesButton.destroy();
		}
		if (spacingButton != null) {
			spacingButton.destroy();
		}
		if (marginButton != null) {
			marginButton.destroy();
		}
	}
}