1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.utils.ui.workbench.ui;
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14 import java.util.Comparator;
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15 import java.util.HashMap;
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16 import java.util.Map;
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18 import org.eclipse.jface.viewers.IBaseLabelProvider;
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19 import org.eclipse.jface.viewers.ITableLabelProvider;
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20 import org.eclipse.jface.viewers.TableViewer;
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21 import org.eclipse.jface.viewers.Viewer;
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22 import org.eclipse.jface.viewers.ViewerSorter;
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23 import org.eclipse.swt.events.SelectionAdapter;
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24 import org.eclipse.swt.events.SelectionEvent;
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25 import org.eclipse.swt.widgets.TableColumn;
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26 import org.eclipse.ui.IMemento;
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29 * This class adds column sorting functionality to SWT Table widget.
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31 * Attach this Sorter after you have created all columns.
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33 * Usage: TableColumnSorter.attachTableColumnSorter(myTable);
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35 * @author Toni Kalajainen
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37 public class TableColumnSorter {
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40 protected final TableViewer viewer;
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43 protected final ColumnSorter sorter;
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45 /** column specific comparators*/
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46 protected Map<Integer, Comparator<?>> columnComparators =
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47 new HashMap<Integer, Comparator<?>>();
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49 public static TableColumnSorter attachTableColumnSorter(TableViewer viewer) {
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50 return new TableColumnSorter(viewer);
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53 public static void unattachTableColumnSorter(TableViewer viewer) {
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54 viewer.setSorter(null);
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57 public void setColumnComparator(int index, Comparator<?> comparator)
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59 columnComparators.put(index, comparator);
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63 private final static String PRI_ASC = "PriAsc";
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64 private final static String SEC_ASC = "SecAsc";
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65 private final static String PRI_IND = "PriInd";
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66 private final static String SEC_IND = "SecInd";
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68 public void saveState(String id, IMemento memento) {
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69 memento.putInteger(id+PRI_ASC, sorter.isAscending()?1:0);
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70 memento.putInteger(id+SEC_ASC, sorter.isSecondaryAscending()?1:0);
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71 memento.putInteger(id+PRI_IND, sorter.getIndex());
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72 memento.putInteger(id+SEC_IND, sorter.getSecondaryIndex());
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75 public void restoreState(String id, IMemento memento) {
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76 if (!hasState(id, memento)) return;
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78 sorter.setAscending( memento.getInteger(id+PRI_ASC)==1 );
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79 sorter.setSecondaryAscending( memento.getInteger(id+SEC_ASC)==1 );
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80 sorter.setIndex( memento.getInteger(id+PRI_IND) );
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81 sorter.setSecondaryIndex( memento.getInteger(id+SEC_IND) );
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86 public boolean hasState(String id, IMemento memento) {
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87 return (memento.getInteger(id+PRI_ASC)!=null) &&
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88 (memento.getInteger(id+SEC_ASC)!=null) &&
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89 (memento.getInteger(id+PRI_IND)!=null) &&
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90 (memento.getInteger(id+SEC_IND)!=null);
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93 public void setColumnAscending(int index)
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95 sorter.setIndex(index);
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96 sorter.setAscending(true);
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100 private TableColumnSorter(TableViewer viewer) {
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101 this.viewer = viewer;
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102 this.sorter = new ColumnSorter();
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105 TableColumn columns[] = viewer.getTable().getColumns();
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106 for(int i=0; i<columns.length; i++) {
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107 TableColumn column = columns[i];
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108 column.setData("index", new Integer(i));
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109 column.addSelectionListener(new SelectionAdapter() {
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110 public void widgetSelected(SelectionEvent e) {
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111 int index = (Integer) e.widget.getData("index");
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112 if (index == TableColumnSorter.this.sorter.getIndex()) {
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114 TableColumnSorter.this.sorter.setAscending( !TableColumnSorter.this.sorter.isAscending() );
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116 TableColumnSorter.this.sorter.setSecondaryIndex( TableColumnSorter.this.sorter.getIndex() );
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117 TableColumnSorter.this.sorter.setSecondaryAscending( TableColumnSorter.this.sorter.isAscending() );
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118 TableColumnSorter.this.sorter.setIndex(index);
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119 TableColumnSorter.this.sorter.setAscending(true);
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121 TableColumnSorter.this.viewer.refresh();
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125 viewer.setSorter(sorter);
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129 class ColumnSorter extends ViewerSorter {
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130 /** Sort direction */
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131 private boolean ascending = true;
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132 /** Secondary Sort direction */
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133 private boolean secondaryAscending = true;
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135 private int columnIndex = 0;
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136 /** Secondary sort column */
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137 private int secondaryColumnIndex = -1;
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138 /** case sensitive */
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139 private boolean caseSensitive = false;
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141 public void setAscending(boolean ascending) {
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142 this.ascending = ascending;
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145 public boolean isAscending() {
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149 public void setSecondaryAscending(boolean ascending) {
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150 this.secondaryAscending = ascending;
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153 public boolean isSecondaryAscending() {
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154 return secondaryAscending;
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157 public void setIndex(int index) {
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158 this.columnIndex = index;
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161 public int getIndex() {
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162 return columnIndex;
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165 public void setSecondaryIndex(int index) {
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166 this.secondaryColumnIndex = index;
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169 public int getSecondaryIndex() {
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170 return secondaryColumnIndex;
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173 @SuppressWarnings("unchecked")
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174 private int compare(int columnIndex, String text1, String text2, Object o1, Object o2)
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176 @SuppressWarnings("rawtypes")
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177 Comparator c = columnComparators.get(columnIndex);
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178 if (c==null || o1==null || o2==null)
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179 return text1.compareTo(text2);
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180 return c.compare(o1, o2);
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183 public int compare(Viewer viewer, Object e1, Object e2) {
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186 TableViewer v = (TableViewer) viewer;
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187 IBaseLabelProvider blp = v.getLabelProvider();
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188 if (!(blp instanceof ITableLabelProvider)) {
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189 return super.compare(viewer, e1, e2);
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191 ITableLabelProvider tlp = (ITableLabelProvider) blp;
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194 String text1 = tlp.getColumnText(e1, columnIndex);
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195 String text2 = tlp.getColumnText(e2, columnIndex);
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196 if (text1==null) text1="";
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197 if (text2==null) text2="";
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198 if (!caseSensitive) {
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199 text1 = text1.toLowerCase();
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200 text2 = text2.toLowerCase();
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202 result = compare(columnIndex, text1, text2, e1, e2);
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203 if (!ascending) return -result;
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206 if (result==0 && (secondaryColumnIndex>=0)) {
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207 text1 = tlp.getColumnText(e1, secondaryColumnIndex);
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208 text2 = tlp.getColumnText(e2, secondaryColumnIndex);
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209 if (text1==null) text1="";
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210 if (text2==null) text2="";
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211 if (!caseSensitive) {
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212 text1 = text1.toLowerCase();
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213 text2 = text2.toLowerCase();
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215 result = compare(secondaryColumnIndex, text1, text2, e1, e2);
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217 if (!secondaryAscending) return -result;
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223 public boolean isCaseSensitive() {
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224 return caseSensitive;
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227 public void setCaseSensitive(boolean caseSensitive) {
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228 this.caseSensitive = caseSensitive;
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232 public ColumnSorter getSorter() {
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