| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.search.internal.ui.util; |
| |
| import java.util.Arrays; |
| import java.util.Comparator; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.StringTokenizer; |
| |
| import org.eclipse.swt.events.DisposeEvent; |
| import org.eclipse.swt.events.DisposeListener; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Combo; |
| import org.eclipse.swt.widgets.Widget; |
| |
| import org.eclipse.jface.window.Window; |
| |
| import org.eclipse.ui.dialogs.TypeFilteringDialog; |
| |
| import org.eclipse.search.internal.ui.SearchMessages; |
| |
| public class FileTypeEditor extends SelectionAdapter implements DisposeListener { |
| |
| private Combo fTextField; |
| private Button fBrowseButton; |
| |
| private final static String TYPE_DELIMITER= SearchMessages.FileTypeEditor_typeDelimiter; |
| public final static String FILE_PATTERN_NEGATOR= "!"; //$NON-NLS-1$ |
| |
| private static final Comparator<String> FILE_TYPES_COMPARATOR= new Comparator<String>() { |
| @Override |
| public int compare(String fp1, String fp2) { |
| boolean isNegative1= fp1.startsWith(FILE_PATTERN_NEGATOR); |
| boolean isNegative2= fp2.startsWith(FILE_PATTERN_NEGATOR); |
| if (isNegative1 != isNegative2) { |
| return isNegative1 ? 1 : -1; |
| } |
| return fp1.compareTo(fp2); |
| } |
| }; |
| |
| public FileTypeEditor(Combo textField, Button browseButton) { |
| fTextField= textField; |
| fBrowseButton= browseButton; |
| |
| fTextField.addDisposeListener(this); |
| fBrowseButton.addDisposeListener(this); |
| fBrowseButton.addSelectionListener(this); |
| } |
| |
| @Override |
| public void widgetDisposed(DisposeEvent event) { |
| Widget widget= event.widget; |
| if (widget == fTextField) |
| fTextField= null; |
| else if (widget == fBrowseButton) |
| fBrowseButton= null; |
| } |
| |
| @Override |
| public void widgetSelected(SelectionEvent event) { |
| if (event.widget == fBrowseButton) |
| handleBrowseButton(); |
| } |
| |
| public String[] getFileTypes() { |
| Set<String> result= new HashSet<>(); |
| StringTokenizer tokenizer= new StringTokenizer(fTextField.getText(), TYPE_DELIMITER); |
| |
| while (tokenizer.hasMoreTokens()) { |
| String currentExtension= tokenizer.nextToken().trim(); |
| result.add(currentExtension); |
| } |
| return result.toArray(new String[result.size()]); |
| } |
| |
| public void setFileTypes(String[] types) { |
| fTextField.setText(typesToString(types)); |
| } |
| |
| protected void handleBrowseButton() { |
| TypeFilteringDialog dialog= new TypeFilteringDialog(fTextField.getShell(), Arrays.asList(getFileTypes())); |
| if (dialog.open() == Window.OK) { |
| Object[] result= dialog.getResult(); |
| HashSet<String> patterns= new HashSet<>(); |
| boolean starIncluded= false; |
| for (int i= 0; i < result.length; i++) { |
| String curr= result[i].toString(); |
| if (curr.equals("*")) { //$NON-NLS-1$ |
| starIncluded= true; |
| } else { |
| patterns.add("*." + curr); //$NON-NLS-1$ |
| } |
| } |
| if (patterns.isEmpty() && starIncluded) { // remove star when other file extensions active |
| patterns.add("*"); //$NON-NLS-1$ |
| } |
| String[] filePatterns= patterns.toArray(new String[patterns.size()]); |
| Arrays.sort(filePatterns); |
| setFileTypes(filePatterns); |
| } |
| } |
| |
| public static String typesToString(String[] types) { |
| Arrays.sort(types, FILE_TYPES_COMPARATOR); |
| StringBuffer result= new StringBuffer(); |
| for (int i= 0; i < types.length; i++) { |
| if (i > 0) { |
| result.append(TYPE_DELIMITER); |
| result.append(" "); //$NON-NLS-1$ |
| } |
| result.append(types[i]); |
| } |
| return result.toString(); |
| } |
| } |