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/*******************************************************************************
* Copyright (c) 2004, 2009 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.editors;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.runtime.Assert;
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.swt.widgets.Text;
import org.eclipse.ui.forms.widgets.FormToolkit;
/**
* @author Steffen Pingel
*/
public class MultiSelectionAttributeEditor extends AbstractAttributeEditor {
private String[] allValues;
private Text text;
private List list;
public MultiSelectionAttributeEditor(TaskDataModel manager, TaskAttribute taskAttribute) {
super(manager, taskAttribute);
if (isReadOnly()) {
setLayoutHint(new LayoutHint(RowSpan.SINGLE, ColumnSpan.SINGLE));
} else {
setLayoutHint(new LayoutHint(RowSpan.MULTIPLE, ColumnSpan.SINGLE));
}
}
@Override
public void createControl(Composite parent, FormToolkit toolkit) {
if (isReadOnly()) {
text = new Text(parent, SWT.FLAT | SWT.READ_ONLY | SWT.WRAP);
text.setFont(EditorUtil.TEXT_FONT);
toolkit.adapt(text, false, false);
text.setData(FormToolkit.KEY_DRAW_BORDER, Boolean.FALSE);
select(getValues(), getValuesLabels());
setControl(text);
} else {
list = new List(parent, SWT.FLAT | SWT.MULTI | SWT.V_SCROLL);
toolkit.adapt(list, false, false);
list.setData(FormToolkit.KEY_DRAW_BORDER, FormToolkit.TREE_BORDER);
list.setFont(EditorUtil.TEXT_FONT);
Map<String, String> labelByValue = getAttributeMapper().getOptions(getTaskAttribute());
if (labelByValue != null) {
allValues = labelByValue.keySet().toArray(new String[0]);
for (String value : allValues) {
list.add(labelByValue.get(value));
}
}
select(getValues(), getValuesLabels());
if (allValues != null) {
list.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
Assert.isNotNull(allValues);
int[] indices = list.getSelectionIndices();
String[] selectedValues = new String[indices.length];
for (int i = 0; i < indices.length; i++) {
int index = indices[i];
Assert.isLegal(index >= 0 && index <= allValues.length - 1);
selectedValues[i] = allValues[index];
}
setValues(selectedValues);
}
});
list.showSelection();
}
setControl(list);
}
}
public String[] getValues() {
return getAttributeMapper().getValues(getTaskAttribute()).toArray(new String[0]);
}
public String[] getValuesLabels() {
return getAttributeMapper().getValueLabels(getTaskAttribute()).toArray(new String[0]);
}
private void select(String[] values, String[] labels) {
if (text != null) {
StringBuilder valueString = new StringBuilder();
if (labels != null) {
for (int i = 0; i < labels.length; i++) {
valueString.append(labels[i]);
if (i != labels.length - 1) {
valueString.append(", "); //$NON-NLS-1$
}
}
}
text.setText(valueString.toString());
} else if (list != null) {
if (values != null) {
list.deselectAll();
Set<String> selectedValues = new HashSet<String>(Arrays.asList(values));
for (int i = 0; i < allValues.length; i++) {
if (selectedValues.contains(allValues[i])) {
list.select(i);
}
}
} else {
list.setItems(labels);
list.setSelection(labels);
}
}
}
public void setValues(String[] values) {
getAttributeMapper().setValues(getTaskAttribute(), Arrays.asList(values));
attributeChanged();
}
}
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