org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/TreeColumnPatternFilter.java

   1 /*******************************************************************************
   2  * Copyright (C) 2018 Michael Keppler <michael.keppler@gmx.de>
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License 2.0
   6  * which accompanies this distribution, and is available at
   7  * https://www.eclipse.org/legal/epl-2.0/
   8  *
   9  * SPDX-License-Identifier: EPL-2.0
  10  *******************************************************************************/
  11 package org.eclipse.egit.ui.internal;
  12
  13 import org.eclipse.jface.viewers.ColumnLabelProvider;
  14 import org.eclipse.jface.viewers.TreeViewer;
  15 import org.eclipse.jface.viewers.Viewer;
  16 import org.eclipse.ui.dialogs.PatternFilter;
  17
  18 /**
  19  * Pattern filter based on the column label providers of a {@link TreeViewer}.
  20  */
  21 public class TreeColumnPatternFilter extends PatternFilter {
  22
  23         /**
  24          * Creates a new tree column based pattern filter with a leading wildcard
  25          * character included in the search string.
  26          */
  27         public TreeColumnPatternFilter() {
  28                 setIncludeLeadingWildcard(true);
  29         }
  30
  31         @Override
  32         protected boolean isLeafMatch(Viewer viewer, Object element) {
  33                 TreeViewer treeViewer = (TreeViewer) viewer;
  34                 int numberOfColumns = treeViewer.getTree().getColumnCount();
  35                 for (int columnIndex = 0; columnIndex < numberOfColumns; columnIndex++) {
  36                         ColumnLabelProvider labelProvider = (ColumnLabelProvider) treeViewer
  37                                         .getLabelProvider(columnIndex);
  38                         String labelText = labelProvider.getText(element);
  39                         if (wordMatches(labelText)) {
  40                                 return true;
  41                         }
  42                 }
  43                 return false;
  44         }
  45
  46 }