org.eclipse.mylyn.internal.trac.ui.editor.TracCcAttributeEditor.java Source code

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Here is the source code for org.eclipse.mylyn.internal.trac.ui.editor.TracCcAttributeEditor.java

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/*******************************************************************************
 * Copyright (c) 2006, 2008 Steffen Pingel and others.
 * 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:
 *     Steffen Pingel - initial API and implementation
 *******************************************************************************/

package org.eclipse.mylyn.internal.trac.ui.editor;

import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.mylyn.internal.trac.core.TracAttributeMapper;
import org.eclipse.mylyn.tasks.core.data.TaskAttribute;
import org.eclipse.mylyn.tasks.core.data.TaskDataModel;
import org.eclipse.mylyn.tasks.ui.editors.AbstractAttributeEditor;
import org.eclipse.mylyn.tasks.ui.editors.LayoutHint;
import org.eclipse.mylyn.tasks.ui.editors.LayoutHint.ColumnSpan;
import org.eclipse.mylyn.tasks.ui.editors.LayoutHint.RowSpan;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.List;
import org.eclipse.ui.forms.widgets.FormToolkit;

/**
 * @author Rob Elves
 */
public class TracCcAttributeEditor extends AbstractAttributeEditor {

    private List list;

    private TaskAttribute attrRemoveCc;

    protected boolean suppressRefresh;

    public TracCcAttributeEditor(TaskDataModel manager, TaskAttribute taskAttribute) {
        super(manager, taskAttribute);
        setLayoutHint(new LayoutHint(RowSpan.MULTIPLE, ColumnSpan.SINGLE));
    }

    @Override
    public void createControl(Composite parent, FormToolkit toolkit) {
        list = new List(parent, SWT.FLAT | SWT.MULTI | SWT.V_SCROLL);
        toolkit.adapt(list, true, true);
        list.setData(FormToolkit.KEY_DRAW_BORDER, FormToolkit.TEXT_BORDER);
        list.setFont(JFaceResources.getDefaultFont());
        list.setToolTipText(getDescription());
        GridDataFactory.fillDefaults().grab(true, true).align(SWT.FILL, SWT.FILL).applyTo(list);

        populateFromAttribute();

        attrRemoveCc = getModel().getTaskData().getRoot().getMappedAttribute(TracAttributeMapper.REMOVE_CC);
        selectValuesToRemove();

        list.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                try {
                    suppressRefresh = true;
                    for (String cc : list.getItems()) {
                        int index = list.indexOf(cc);
                        if (list.isSelected(index)) {
                            java.util.List<String> remove = attrRemoveCc.getValues();
                            if (!remove.contains(cc)) {
                                attrRemoveCc.addValue(cc);
                            }
                        } else {
                            attrRemoveCc.removeValue(cc);
                        }
                    }
                    getModel().attributeChanged(attrRemoveCc);
                } finally {
                    suppressRefresh = false;
                }
            }
        });

        list.showSelection();

        setControl(list);
    }

    private void populateFromAttribute() {
        TaskAttribute attrUserCC = getTaskAttribute();
        if (attrUserCC != null) {
            for (String value : attrUserCC.getValues()) {
                list.add(value);
            }
        }
    }

    private void selectValuesToRemove() {
        for (String item : attrRemoveCc.getValues()) {
            int i = list.indexOf(item);
            if (i != -1) {
                list.select(i);
            }
        }
    }

    @Override
    public void refresh() {
        if (list != null && !list.isDisposed()) {
            list.removeAll();
            populateFromAttribute();
            selectValuesToRemove();
        }
    }

    @Override
    public boolean shouldAutoRefresh() {
        return !suppressRefresh;
    }

}