/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.uima.taeconfigurator.editors.ui.dialogs;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import org.apache.uima.taeconfigurator.InternalErrorCDE;
import org.apache.uima.taeconfigurator.TAEConfiguratorPlugin;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;
import org.eclipse.swt.widgets.TreeItem;
public class ResourcePickerDialog extends AbstractDialog {
protected Tree resourcesUI;
protected TreeColumn resourcesUIc1;
protected TreeColumn resourcesUIc2;
public IResource pickedResource;
protected Object [] result;
public ResourcePickerDialog(Shell shell) {
super(shell, "Select a File", "Use this panel to select a file in the Workspace");
}
private static final Comparator resourceComparator = new Comparator () {
public int compare(Object arg0, Object arg1) {
IResource r0 = (IResource) arg0;
IResource r1 = (IResource) arg1;
return r0.getName().compareTo(r1.getName());
}
};
private void populate(TreeItem parent, IResource[] resources) {
Arrays.sort(resources, resourceComparator);
for (int i = 0; i < resources.length; i++) {
TreeItem item = new TreeItem(parent, SWT.NULL);
IResource r = resources[i];
item.setText(r.getName());
item.setData(r);
if (r instanceof IContainer) {
new TreeItem(item, SWT.NULL);
}
}
}
protected Control createDialogArea(Composite parent) {
Composite mainArea = (Composite) super.createDialogArea(parent);
resourcesUI = newTree(mainArea, SWT.SINGLE);
((GridData)resourcesUI.getLayoutData()).heightHint = 400;
resourcesUIc1 = new TreeColumn(resourcesUI, SWT.LEFT);
resourcesUIc2 = new TreeColumn(resourcesUI, SWT.LEFT);
setupResourcesByLocation();
return mainArea;
}
protected void setupResourcesByLocation() {
resourcesUI.removeAll();
resourcesUI.removeListener(SWT.Expand, this); // remove to prevent triggering while setting up
resourcesUI.removeListener(SWT.Selection, this); // remove to prevent triggering while setting up
resourcesUIc1.setWidth(500);
resourcesUIc2.setWidth(0);
resourcesUI.setHeaderVisible(false);
TreeItem topItem = new TreeItem(resourcesUI, SWT.NONE);
topItem.setText("Workspace");
IWorkspaceRoot root = TAEConfiguratorPlugin.getWorkspace().getRoot().getWorkspace().getRoot();
try {
IResource[] projects = root.members();
populate(topItem, projects);
} catch (CoreException e) {
throw new InternalErrorCDE("unhandled exception", e);
}
topItem.setExpanded(true);
resourcesUI.addListener(SWT.Expand, this);
resourcesUI.addListener(SWT.Selection, this);
}
/* (non-Javadoc)
* @see org.apache.uima.taeconfigurator.editors.ui.dialogs.AbstractDialog#handleEvent(org.eclipse.swt.widgets.Event)
*/
public void handleEvent(Event event) {
if (event.widget == resourcesUI &&
event.type == SWT.Expand) {
TreeItem expandedNode = (TreeItem) event.item;
TreeItem maybeDummy = expandedNode.getItem(0);
if (null == maybeDummy.getData()) {
maybeDummy.dispose();
IResource parentResource = (IResource)expandedNode.getData();
try {
populate(expandedNode, ((IContainer)parentResource).members());
} catch (CoreException e) {
throw new InternalErrorCDE("unhandled exception", e);
}
}
} else if (event.widget == resourcesUI && event.type == SWT.Selection) {
copyValuesFromGUI();
}
super.handleEvent(event);
}
/* (non-Javadoc)
* @see org.apache.uima.taeconfigurator.editors.ui.dialogs.AbstractDialog#copyValuesFromGUI()
*/
public void copyValuesFromGUI() {
if (resourcesUI.getSelectionCount() > 0) {
pickedResource = (IResource)resourcesUI.getSelection()[0].getData();
IPath ipath = (null == pickedResource) ? null : pickedResource.getFullPath();
result = (null == ipath ||
(2 > ipath.segmentCount())) // project name alone cant be given to getFile
? null
: new IFile[] {TAEConfiguratorPlugin.getWorkspace().getRoot().getFile(ipath)};
}
}
/* (non-Javadoc)
* @see org.apache.uima.taeconfigurator.editors.ui.dialogs.AbstractDialog#enableOK()
*/
public void enableOK() {
if ( (0 < resourcesUI.getSelectionCount()) &&
(resourcesUI.getSelection()[0].getData() instanceof IFile)) {
okButton.setEnabled(true);
} else {
okButton.setEnabled(false);
}
}
/* (non-Javadoc)
* @see org.apache.uima.taeconfigurator.editors.ui.dialogs.AbstractDialog#isValid()
*/
public boolean isValid() {
return true;
}
public Object[] getResult() {
return result;
}
public void setResult(List aResult) {
if (null == aResult) {
result = null;
} else {
aResult.toArray(result = new Object[aResult.size()]);
}
}
}