org.eclipse.emf.eef.runtime.ui.widgets.LinkEObjectFlatComboViewer.java Source code

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Here is the source code for org.eclipse.emf.eef.runtime.ui.widgets.LinkEObjectFlatComboViewer.java

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/*******************************************************************************
 * Copyright (c) 2008, 2013 Obeo.
 * 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:
 *     Obeo - initial API and implementation
 *******************************************************************************/
package org.eclipse.emf.eef.runtime.ui.widgets;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.eef.runtime.ui.utils.EditingUtils;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Link;

/**
 * AdvancedEObjectFlatComboViewer with a link to set the element properties.
 * 
 * @author <a href="mailto:nathalie.lepine@obeo.fr">Nathalie Lpine</a>
 */
public class LinkEObjectFlatComboViewer extends AbstractAdvancedEObjectFlatComboViewer {

    /** Associated link. */
    protected Link valueLink;

    /**
     * Constructor from super class
     * 
     * @param dialogTitle
     * @param input Object
     * @param filter ViewerFilter
     * @param adapterFactory AdapterFactory
     * @param callback EObjectFlatComboViewerListener
     */
    public LinkEObjectFlatComboViewer(String dialogTitle, Object input, ViewerFilter filter,
            AdapterFactory adapterFactory, EObjectFlatComboViewerListener callback) {
        super(dialogTitle, input, filter, adapterFactory, callback);
    }

    /** (non-Javadoc)
     * @see org.eclipse.emf.eef.runtime.ui.widgets.AbstractAdvancedEObjectFlatComboViewer#createLabels(org.eclipse.swt.widgets.Composite)
     */
    protected void createLabels(Composite parent) {
        String value = UNDEFINED_VALUE;
        if (selection != null) {
            value = labelProvider.getText(selection);
        }
        this.valueLink = createLink(parent, value, SWT.NONE);
        FormData data = new FormData();
        data.left = new FormAttachment(0, 0);
        data.right = new FormAttachment(browseButton, 0);
        data.top = new FormAttachment(0, 4);
        valueLink.setLayoutData(data);
        valueLink.addSelectionListener(new SelectionAdapter() {
            /** (non-Javadoc)
             * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
             */
            public void widgetSelected(SelectionEvent e) {
                EObject editedElement = getSelection();
                handleEdit(editedElement);
            }
        });
    }

    /**
     * @param parent Composite
     * @param value String
     * @param style
     * @return the created Link
     */
    private Link createLink(Composite parent, String value, int style) {
        Link link = new Link(parent, style);
        link.setText(value);
        EditingUtils.setEEFtype(field, "eef::LinkEObjectFlatComboViewer::link");
        return link;
    }

    /** (non-Javadoc)
     * @see org.eclipse.emf.eef.runtime.ui.widgets.AbstractAdvancedEObjectFlatComboViewer#setSelection(org.eclipse.jface.viewers.ISelection)
     */
    public void setSelection(ISelection selection) {
        if (selection instanceof StructuredSelection) {
            StructuredSelection structuredSelection = (StructuredSelection) selection;
            if (!structuredSelection.isEmpty() && !"".equals(structuredSelection.getFirstElement())) {
                setSelection((EObject) structuredSelection.getFirstElement());
            } else {
                this.valueLink.setText(UNDEFINED_VALUE);
            }
        }
    }

    /** (non-Javadoc)
     * @see org.eclipse.emf.eef.runtime.ui.widgets.AbstractAdvancedEObjectFlatComboViewer#setSelection(org.eclipse.emf.ecore.EObject)
     */
    public void setSelection(EObject selection) {
        this.selection = selection;
        String text = labelProvider.getText(selection);
        if ("".equals(text)) //$NON-NLS-1$
            this.valueLink.setText(UNDEFINED_VALUE);
        else
            this.valueLink.setText("<a>" + text + "</a>");
    }

    /** (non-Javadoc)
     * @see org.eclipse.emf.eef.runtime.ui.widgets.AbstractAdvancedEObjectFlatComboViewer#setID(java.lang.Object)
     */
    public void setID(Object id) {
        super.setID(id);
        EditingUtils.setID(valueLink, id);
    }

    /** (non-Javadoc)
     * @see org.eclipse.emf.eef.runtime.ui.widgets.AbstractAdvancedEObjectFlatComboViewer#setEnabled(boolean)
     */
    public void setEnabled(boolean enabled) {
        super.setEnabled(enabled);
        valueLink.setEnabled(enabled);
    }

    /** (non-Javadoc)
     * @see org.eclipse.emf.eef.runtime.ui.widgets.AbstractAdvancedEObjectFlatComboViewer#isEnabled()
     */
    public boolean isEnabled() {
        return super.isEnabled() && valueLink.isEnabled();
    }

    /** (non-Javadoc)
     * @see org.eclipse.emf.eef.runtime.ui.widgets.AbstractAdvancedEObjectFlatComboViewer#setToolTipText(java.lang.String)
     */
    public void setToolTipText(String tooltip) {
        super.setToolTipText(tooltip);
        valueLink.setToolTipText(tooltip);
    }

}