1 | // License: GPL. For details, see LICENSE file.
|
---|
2 | package org.openstreetmap.josm.gui.tagging.ac;
|
---|
3 |
|
---|
4 | import java.awt.Component;
|
---|
5 | import java.awt.event.FocusAdapter;
|
---|
6 | import java.awt.event.FocusEvent;
|
---|
7 | import java.awt.event.KeyAdapter;
|
---|
8 | import java.awt.event.KeyEvent;
|
---|
9 | import java.util.EventObject;
|
---|
10 |
|
---|
11 | import javax.swing.ComboBoxEditor;
|
---|
12 | import javax.swing.JTable;
|
---|
13 | import javax.swing.JTextField;
|
---|
14 | import javax.swing.event.CellEditorListener;
|
---|
15 | import javax.swing.table.TableCellEditor;
|
---|
16 | import javax.swing.text.AttributeSet;
|
---|
17 | import javax.swing.text.BadLocationException;
|
---|
18 | import javax.swing.text.Document;
|
---|
19 | import javax.swing.text.PlainDocument;
|
---|
20 | import javax.swing.text.StyleConstants;
|
---|
21 |
|
---|
22 | import org.openstreetmap.josm.Main;
|
---|
23 | import org.openstreetmap.josm.gui.util.TableCellEditorSupport;
|
---|
24 |
|
---|
25 | /**
|
---|
26 | * AutoCompletingTextField is an text field with autocompletion behaviour. It
|
---|
27 | * can be used as table cell editor in {@see JTable}s.
|
---|
28 | *
|
---|
29 | * Autocompletion is controlled by a list of {@see AutoCompletionListItem}s
|
---|
30 | * managed in a {@see AutoCompletionList}.
|
---|
31 | *
|
---|
32 | *
|
---|
33 | */
|
---|
34 | public class AutoCompletingTextField extends JTextField implements ComboBoxEditor, TableCellEditor {
|
---|
35 | /**
|
---|
36 | * The document model for the editor
|
---|
37 | */
|
---|
38 | class AutoCompletionDocument extends PlainDocument {
|
---|
39 |
|
---|
40 | /**
|
---|
41 | * inserts a string at a specific position
|
---|
42 | *
|
---|
43 | */
|
---|
44 | @Override
|
---|
45 | public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
|
---|
46 | if (autoCompletionList == null) {
|
---|
47 | super.insertString(offs, str, a);
|
---|
48 | return;
|
---|
49 | }
|
---|
50 |
|
---|
51 | // input method for non-latin characters (e.g. scim)
|
---|
52 | if (a != null && a.isDefined(StyleConstants.ComposedTextAttribute)) {
|
---|
53 | super.insertString(offs, str, a);
|
---|
54 | return;
|
---|
55 | }
|
---|
56 |
|
---|
57 | // if the current offset isn't at the end of the document we don't autocomplete.
|
---|
58 | // If a highlighted autocompleted suffix was present and we get here Swing has
|
---|
59 | // already removed it from the document. getLength() therefore doesn't include the
|
---|
60 | // autocompleted suffix.
|
---|
61 | //
|
---|
62 | if (offs < getLength()) {
|
---|
63 | super.insertString(offs, str, a);
|
---|
64 | return;
|
---|
65 | }
|
---|
66 |
|
---|
67 | String currentText = getText(0, getLength());
|
---|
68 | // if the text starts with a number we don't autocomplete
|
---|
69 | if (Main.pref.getBoolean("autocomplete.dont_complete_numbers", true)) {
|
---|
70 | try {
|
---|
71 | Long.parseLong(str);
|
---|
72 | if (currentText.length() == 0) {
|
---|
73 | // we don't autocomplete on numbers
|
---|
74 | super.insertString(offs, str, a);
|
---|
75 | return;
|
---|
76 | }
|
---|
77 | Long.parseLong(currentText);
|
---|
78 | super.insertString(offs, str, a);
|
---|
79 | return;
|
---|
80 | } catch(NumberFormatException e) {
|
---|
81 | // either the new text or the current text isn't a number. We continue with
|
---|
82 | // autocompletion
|
---|
83 | }
|
---|
84 | }
|
---|
85 | String prefix = currentText.substring(0, offs);
|
---|
86 | autoCompletionList.applyFilter(prefix+str);
|
---|
87 | if (autoCompletionList.getFilteredSize()>0) {
|
---|
88 | // there are matches. Insert the new text and highlight the
|
---|
89 | // auto completed suffix
|
---|
90 | //
|
---|
91 | String matchingString = autoCompletionList.getFilteredItem(0).getValue();
|
---|
92 | remove(0,getLength());
|
---|
93 | super.insertString(0,matchingString,a);
|
---|
94 |
|
---|
95 | // highlight from insert position to end position to put the caret at the end
|
---|
96 | setCaretPosition(offs + str.length());
|
---|
97 | moveCaretPosition(getLength());
|
---|
98 | } else {
|
---|
99 | // there are no matches. Insert the new text, do not highlight
|
---|
100 | //
|
---|
101 | String newText = prefix + str;
|
---|
102 | remove(0,getLength());
|
---|
103 | super.insertString(0,newText,a);
|
---|
104 | setCaretPosition(getLength());
|
---|
105 |
|
---|
106 | }
|
---|
107 | }
|
---|
108 | }
|
---|
109 |
|
---|
110 | /** the auto completion list user input is matched against */
|
---|
111 | protected AutoCompletionList autoCompletionList = null;
|
---|
112 |
|
---|
113 | /**
|
---|
114 | * creates the default document model for this editor
|
---|
115 | *
|
---|
116 | */
|
---|
117 | @Override
|
---|
118 | protected Document createDefaultModel() {
|
---|
119 | return new AutoCompletionDocument();
|
---|
120 | }
|
---|
121 |
|
---|
122 | protected void init() {
|
---|
123 | addFocusListener(
|
---|
124 | new FocusAdapter() {
|
---|
125 | @Override public void focusGained(FocusEvent e) {
|
---|
126 | selectAll();
|
---|
127 | applyFilter(getText());
|
---|
128 | }
|
---|
129 | }
|
---|
130 | );
|
---|
131 |
|
---|
132 | addKeyListener(
|
---|
133 | new KeyAdapter() {
|
---|
134 |
|
---|
135 | @Override
|
---|
136 | public void keyReleased(KeyEvent e) {
|
---|
137 | if (getText().equals("")) {
|
---|
138 | applyFilter("");
|
---|
139 | }
|
---|
140 | }
|
---|
141 | }
|
---|
142 | );
|
---|
143 | tableCellEditorSupport = new TableCellEditorSupport(this);
|
---|
144 | }
|
---|
145 |
|
---|
146 | /**
|
---|
147 | * constructor
|
---|
148 | */
|
---|
149 | public AutoCompletingTextField() {
|
---|
150 | init();
|
---|
151 | }
|
---|
152 |
|
---|
153 | public AutoCompletingTextField(int columns) {
|
---|
154 | super(columns);
|
---|
155 | init();
|
---|
156 | }
|
---|
157 |
|
---|
158 | protected void applyFilter(String filter) {
|
---|
159 | if (autoCompletionList != null) {
|
---|
160 | autoCompletionList.applyFilter(filter);
|
---|
161 | }
|
---|
162 | }
|
---|
163 |
|
---|
164 | /**
|
---|
165 | *
|
---|
166 | * @return the auto completion list; may be null, if no auto completion list is set
|
---|
167 | */
|
---|
168 | public AutoCompletionList getAutoCompletionList() {
|
---|
169 | return autoCompletionList;
|
---|
170 | }
|
---|
171 |
|
---|
172 | /**
|
---|
173 | * sets the auto completion list
|
---|
174 | * @param autoCompletionList the auto completion list; if null, auto completion is
|
---|
175 | * disabled
|
---|
176 | */
|
---|
177 | public void setAutoCompletionList(AutoCompletionList autoCompletionList) {
|
---|
178 | this.autoCompletionList = autoCompletionList;
|
---|
179 | }
|
---|
180 |
|
---|
181 | public Component getEditorComponent() {
|
---|
182 | return this;
|
---|
183 | }
|
---|
184 |
|
---|
185 | public Object getItem() {
|
---|
186 | return getText();
|
---|
187 | }
|
---|
188 |
|
---|
189 | public void setItem(Object anObject) {
|
---|
190 | if (anObject == null) {
|
---|
191 | setText("");
|
---|
192 | } else {
|
---|
193 | setText(anObject.toString());
|
---|
194 | }
|
---|
195 | }
|
---|
196 |
|
---|
197 | /* ------------------------------------------------------------------------------------ */
|
---|
198 | /* TableCellEditor interface */
|
---|
199 | /* ------------------------------------------------------------------------------------ */
|
---|
200 |
|
---|
201 | private TableCellEditorSupport tableCellEditorSupport;
|
---|
202 | private String originalValue;
|
---|
203 |
|
---|
204 | public void addCellEditorListener(CellEditorListener l) {
|
---|
205 | tableCellEditorSupport.addCellEditorListener(l);
|
---|
206 | }
|
---|
207 |
|
---|
208 | protected void rememberOriginalValue(String value) {
|
---|
209 | this.originalValue = value;
|
---|
210 | }
|
---|
211 |
|
---|
212 | protected void restoreOriginalValue() {
|
---|
213 | setText(originalValue);
|
---|
214 | }
|
---|
215 |
|
---|
216 | public void removeCellEditorListener(CellEditorListener l) {
|
---|
217 | tableCellEditorSupport.removeCellEditorListener(l);
|
---|
218 | }
|
---|
219 | public void cancelCellEditing() {
|
---|
220 | restoreOriginalValue();
|
---|
221 | tableCellEditorSupport.fireEditingCanceled();
|
---|
222 |
|
---|
223 | }
|
---|
224 |
|
---|
225 | public Object getCellEditorValue() {
|
---|
226 | return getText();
|
---|
227 | }
|
---|
228 |
|
---|
229 | public boolean isCellEditable(EventObject anEvent) {
|
---|
230 | return true;
|
---|
231 | }
|
---|
232 |
|
---|
233 | public boolean shouldSelectCell(EventObject anEvent) {
|
---|
234 | return true;
|
---|
235 | }
|
---|
236 |
|
---|
237 | public boolean stopCellEditing() {
|
---|
238 | tableCellEditorSupport.fireEditingStopped();
|
---|
239 | return true;
|
---|
240 | }
|
---|
241 |
|
---|
242 | public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
|
---|
243 | setText( value == null ? "" : value.toString());
|
---|
244 | rememberOriginalValue(getText());
|
---|
245 | return this;
|
---|
246 | }
|
---|
247 | }
|
---|