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1
11
12 package org.eclipse.ui.internal.navigator.filters;
13
14 import java.util.Arrays  ;
15 import java.util.Comparator ;
16 import java.util.Iterator ;
17 import java.util.Set ;
18
19 import org.eclipse.jface.viewers.ILabelProvider;
20 import org.eclipse.jface.viewers.ISelection;
21 import org.eclipse.jface.viewers.Viewer;
22 import org.eclipse.jface.viewers.ViewerFilter;
23 import org.eclipse.jface.viewers.ViewerSorter;
24 import org.eclipse.swt.SWT;
25 import org.eclipse.swt.accessibility.AccessibleAdapter;
26 import org.eclipse.swt.accessibility.AccessibleEvent;
27 import org.eclipse.swt.events.FocusAdapter;
28 import org.eclipse.swt.events.FocusEvent;
29 import org.eclipse.swt.events.KeyAdapter;
30 import org.eclipse.swt.events.KeyEvent;
31 import org.eclipse.swt.events.ModifyEvent;
32 import org.eclipse.swt.events.ModifyListener;
33 import org.eclipse.swt.events.MouseAdapter;
34 import org.eclipse.swt.events.MouseEvent;
35 import org.eclipse.swt.events.TraverseEvent;
36 import org.eclipse.swt.events.TraverseListener;
37 import org.eclipse.swt.layout.GridData;
38 import org.eclipse.swt.widgets.Composite;
39 import org.eclipse.swt.widgets.Display;
40 import org.eclipse.swt.widgets.TableItem;
41 import org.eclipse.swt.widgets.Text;
42 import org.eclipse.ui.internal.navigator.CommonNavigatorMessages;
43 import org.eclipse.ui.internal.navigator.StringMatcher;
44 import org.eclipse.ui.navigator.ICommonFilterDescriptor;
45 import org.eclipse.ui.navigator.INavigatorContentService;
46 import org.eclipse.ui.navigator.INavigatorFilterService;
47
48
52 public class CommonFiltersTab extends CustomizationTab {
53
54 private static final String ALL = "*";
56 private String initialFilterTextValue = CommonNavigatorMessages.CommonFilterSelectionDialog_enter_name_of_filte_;
57
58 private Text filterText;
59
60 private ILabelProvider filterLabelProvider = new CommonFilterLabelProvider();
61
62 private CommonFilterContentProvider filterContentProvider = new CommonFilterContentProvider();
63
64 private TablePatternFilter patternFilter = new TablePatternFilter();
65
66 protected CommonFiltersTab(Composite parent,
67 INavigatorContentService aContentService) {
68 super(parent, aContentService);
69 createControl();
70 }
71
72 private void createControl() {
73
74 createInstructionsLabel(CommonNavigatorMessages.CommonFilterSelectionDialog_Select_the_filters_to_apply);
75
76 createPatternFilterText(this);
77
78 createTable();
79
80 getTableViewer().setContentProvider(filterContentProvider);
81 getTableViewer().setLabelProvider(filterLabelProvider);
82 getTableViewer().setSorter(new CommonFilterSorter());
83 getTableViewer().setInput(getContentService());
84
85 getTableViewer().addFilter(patternFilter);
86
87 updateFiltersCheckState();
88
89 }
90
91 private void createPatternFilterText(Composite composite) {
92 filterText = new Text(composite, SWT.SINGLE | SWT.BORDER);
93 GridData filterTextGridData = new GridData(GridData.FILL_HORIZONTAL);
94 filterText.setLayoutData(filterTextGridData);
95 filterText.setText(initialFilterTextValue);
96 filterText.setFont(composite.getFont());
97
98 filterText.getAccessible().addAccessibleListener(
99 new AccessibleAdapter() {
100
105 public void getName(AccessibleEvent e) {
106 String filterTextString = filterText.getText();
107 if (filterTextString.length() == 0) {
108 e.result = initialFilterTextValue;
109 } else {
110 e.result = filterTextString;
111 }
112 }
113 });
114
115 filterText.addFocusListener(new FocusAdapter() {
116
121 public void focusGained(FocusEvent e) {
122 if (initialFilterTextValue.equals(filterText.getText().trim())) {
123 filterText.selectAll();
124 }
125 }
126 });
127
128 filterText.addMouseListener(new MouseAdapter() {
129
134 public void mouseUp(MouseEvent e) {
135 super.mouseUp(e);
136 if (initialFilterTextValue.equals(filterText.getText().trim())) {
137 filterText.selectAll();
138 }
139 }
140 });
141
142 filterText.addKeyListener(new KeyAdapter() {
143
148 public void keyPressed(KeyEvent e) {
149 boolean hasItems = getTable().getItemCount() > 0;
151 if (hasItems && e.keyCode == SWT.ARROW_DOWN) {
152 getTable().setFocus();
153 } else if (e.character == SWT.CR) {
154 return;
155 }
156 }
157 });
158
159 filterText.addTraverseListener(new TraverseListener() {
161 public void keyTraversed(TraverseEvent e) {
162 if (e.detail == SWT.TRAVERSE_RETURN) {
163 e.doit = false;
164 if (getTableViewer().getTable().getItemCount() == 0) {
165 Display.getCurrent().beep();
166 } else {
167 boolean hasFocus = getTable().setFocus();
170 boolean textChanged = !initialFilterTextValue
171 .equals(filterText.getText().trim());
172 if (hasFocus && textChanged
173 && filterText.getText().trim().length() > 0) {
174 TableItem item = getFirstHighlightedItem(getTable()
175 .getItems());
176 if (item != null) {
177 getTable().setSelection(
178 new TableItem[] { item });
179 ISelection sel = getTableViewer()
180 .getSelection();
181 getTableViewer().setSelection(sel, true);
182 }
183 }
184 }
185 }
186 }
187
188 private TableItem getFirstHighlightedItem(TableItem[] items) {
189 for (int i = 0; i < items.length; i++) {
190 if (patternFilter.match(items[i].getText())) {
191 return items[i];
192 }
193 }
194 return null;
195 }
196 });
197
198 filterText.addModifyListener(new ModifyListener() {
199
204 public void modifyText(ModifyEvent e) {
205 textChanged();
206 }
207 });
208 }
209
210 private void textChanged() {
211 patternFilter.setPattern(filterText.getText());
212 getTableViewer().refresh();
213
214 Set checkedItems = getCheckedItems();
215 for (Iterator iterator = checkedItems.iterator(); iterator.hasNext();) {
216 getTableViewer().setChecked(iterator.next(), true);
217 }
218 }
219
220 private void updateFiltersCheckState() {
221 Object [] children = filterContentProvider
222 .getElements(getContentService());
223 ICommonFilterDescriptor filterDescriptor;
224 INavigatorFilterService filterService = getContentService()
225 .getFilterService();
226 for (int i = 0; i < children.length; i++) {
227 filterDescriptor = (ICommonFilterDescriptor) children[i];
228 if(filterService.isActive(filterDescriptor.getId())) {
229 getTableViewer().setChecked(children[i], true);
230 getCheckedItems().add(children[i]);
231 } else {
232 getTableViewer().setChecked(children[i], false);
233 }
234 }
235 }
236
237 private class TablePatternFilter extends ViewerFilter {
238
239 private StringMatcher matcher = null;
240
241
247 public boolean select(Viewer viewer, Object parentElement,
248 Object element) {
249 return match(filterLabelProvider.getText(element));
250 }
251
252 protected void setPattern(String newPattern) {
253 if (newPattern == null || newPattern.trim().length() == 0) {
254 matcher = new StringMatcher(ALL, true, false);
255 } else {
256 String patternString = ALL + newPattern + ALL;
257 matcher = new StringMatcher(patternString, true, false);
258 }
259
260 }
261
262
270 protected boolean match(String input) {
271 if (input == null) {
272 return false;
273 }
274 return matcher == null || matcher.match(input);
275 }
276
277 protected boolean match(TableItem tableItem) {
278 if (tableItem == null || tableItem.getData() == null) {
279 return false;
280 }
281 return match(filterLabelProvider.getText(tableItem.getData()));
282 }
283 }
284
285 private class CommonFilterSorter extends ViewerSorter {
286
287
290 public void sort(Viewer viewer, Object [] elements) {
291 Arrays.sort(elements, new Comparator () {
292
295 public int compare(Object o1, Object o2) {
296 ICommonFilterDescriptor lvalue = (ICommonFilterDescriptor) o1;
297 ICommonFilterDescriptor rvalue = (ICommonFilterDescriptor) o2;
298
299 return lvalue.getName().compareTo(rvalue.getName());
300 }
301 });
302
303 }
304
305 }
306
307 }
308 |
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