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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
* 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.infra.widgets.editors;
import java.io.File;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.window.Window;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.services.labelprovider.service.LabelProviderService;
import org.eclipse.papyrus.infra.services.labelprovider.service.impl.LabelProviderServiceImpl;
import org.eclipse.papyrus.infra.widgets.Activator;
import org.eclipse.papyrus.infra.widgets.messages.Messages;
import org.eclipse.papyrus.infra.widgets.providers.WorkspaceContentProvider;
import org.eclipse.papyrus.infra.widgets.util.FileUtil;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.FileDialog;
/**
* A Widget for editing Strings with File paths
* The file paths may be absolute (FileSystem paths) or relative to the workspace (Workspace paths)
*
* @author Camille Letavernier
*/
public class StringFileSelector extends StringEditor {
private Button browse;
private Button browseWorkspace;
private List<String> filterNames;
private List<String> filterExtensions;
private boolean allowWorkspace = true, allowFileSystem = true;
private boolean readOnly = false;
public StringFileSelector(Composite parent, int style) {
super(parent, style);
((GridLayout)getLayout()).numColumns = 5;
browse = factory.createButton(this, Messages.StringFileSelector_Browse, SWT.PUSH);
browse.setLayoutData(new GridData());
browseWorkspace = factory.createButton(this, Messages.StringFileSelector_BrowseWorkspace, SWT.PUSH);
browseWorkspace.setLayoutData(new GridData());
filterNames = new LinkedList<String>();
filterExtensions = new LinkedList<String>();
browse.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
File file = getFile(text.getText());
FileDialog dialog = new FileDialog(getShell());
if(labelText != null) {
dialog.setText(labelText);
}
dialog.setFileName(file.getAbsolutePath());
dialog.setFilterExtensions(filterExtensions.toArray(new String[filterExtensions.size()]));
dialog.setFilterNames(filterNames.toArray(new String[filterNames.size()]));
String result = dialog.open();
if(result == null) { //Cancel
return;
}
setResult(result);
}
public void widgetDefaultSelected(SelectionEvent e) {
//Nothing
}
});
browseWorkspace.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
LabelProviderService labelProviderService = new LabelProviderServiceImpl();
try {
labelProviderService.startService();
} catch (ServiceException ex) {
Activator.log.error(ex);
}
ILabelProvider labelProvider = labelProviderService.getLabelProvider();
IFile currentFile = getIFile(text.getText());
TreeSelectorDialog dialog = new TreeSelectorDialog(getShell());
if(labelText != null) {
dialog.setTitle(labelText);
}
WorkspaceContentProvider contentProvider = new WorkspaceContentProvider();
if(!(filterExtensions.isEmpty() || filterNames.isEmpty())) {
//The filters have been defined
contentProvider.setExtensionFilters(new LinkedHashMap<String, String>()); //Reset the default filters
//Use our own filters
for(int i = 0; i < Math.min(filterNames.size(), filterExtensions.size()); i++) {
contentProvider.addExtensionFilter(filterExtensions.get(i), filterNames.get(i));
}
}
dialog.setContentProvider(contentProvider);
dialog.setLabelProvider(labelProvider);
if(currentFile != null && currentFile.exists()) {
dialog.setInitialSelections(new IFile[]{ currentFile });
}
int code = dialog.open();
if(code == Window.OK) {
Object[] result = dialog.getResult();
if(result.length > 0) {
Object file = result[0];
if(file instanceof IFile) {
setResult((IFile)file);
}
}
}
}
public void widgetDefaultSelected(SelectionEvent e) {
//Nothing
}
});
}
protected void setResult(IFile file) {
text.setText(file.getFullPath().toString());
notifyChange();
}
protected void setResult(File file) {
text.setText(file.getAbsolutePath());
notifyChange();
}
protected void setResult(String path) {
text.setText(path);
notifyChange();
}
protected IFile getIFile(String path){
return FileUtil.getIFile(path);
}
protected File getFile(String path){
return FileUtil.getFile(path);
}
public void setFilters(String[] filterExtensions, String[] filterNames) {
if(filterExtensions.length != filterNames.length) {
//This is a simple warning. Only valid filters will be retained.
Activator.log.warn("FilterExtensions and FilterNames do not match");
}
setFilterNames(getFilterLabels(filterNames, filterExtensions));
setFilterExtensions(filterExtensions);
}
protected String[] getFilterLabels(String[] filterNames, String[] filterExtensions) {
int size = Math.min(filterNames.length, filterExtensions.length);
String[] filters = new String[size];
for(int i = 0; i < size; i++) {
filters[i] = filterNames[i] + " (" + filterExtensions[i] + ")";
}
return filters;
}
public void setFilterExtensions(String[] filterExtensions) {
this.filterExtensions = Arrays.asList(filterExtensions);
}
public void setFilterNames(String[] filterNames) {
this.filterNames = Arrays.asList(filterNames);
}
public void addFilteredExtension(String filteredExtension, String filterName) {
if(filteredExtension != null) {
if(filterName == null) {
filterName = filteredExtension;
}
filterExtensions.add(filteredExtension);
filterNames.add(filterName);
}
}
@Override
public Object getEditableType() {
return String.class;
}
@Override
public void setReadOnly(boolean readOnly) {
super.setReadOnly(readOnly);
this.readOnly = readOnly;
updateButtons();
}
public void setAllowWorkspace(boolean allowWorkspace) {
this.allowWorkspace = allowWorkspace;
updateButtons();
}
public void setAllowFileSystem(boolean allowFileSystem) {
this.allowFileSystem = allowFileSystem;
updateButtons();
}
private void updateButtons() {
boolean enableWorkspace = !readOnly && allowWorkspace;
boolean enableFileSystem = !readOnly && allowFileSystem;
//((GridData)browseWorkspace.getLayoutData()).exclude = !allowWorkspace;
//((GridData)browse.getLayoutData()).exclude = !allowFileSystem;
browseWorkspace.setEnabled(enableWorkspace);
browse.setEnabled(enableFileSystem);
}
}
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