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1
19
20 package org.netbeans.modules.editor.hints.borrowed;
21
22
23 import java.awt.Color  ;
24 import java.awt.Dimension ;
25 import java.awt.event.KeyEvent ;
26
27 import javax.swing.*;
28 import javax.swing.BorderFactory ;
29 import javax.swing.event.ListSelectionListener ;
30 import javax.swing.plaf.TextUI ;
31 import javax.swing.text.JTextComponent ;
32 import javax.swing.text.Keymap ;
33 import javax.swing.text.EditorKit ;
34
35 import org.netbeans.editor.*;
36 import org.netbeans.editor.ext.ExtSettingsDefaults;
37 import org.netbeans.editor.ext.ExtSettingsNames;
38 import org.netbeans.spi.editor.hints.Fix;
39 import org.netbeans.spi.editor.hints.LazyFixList;
40
41
48
49 public class ScrollCompletionPane extends JScrollPane implements SettingsChangeListener {
50
51 private static final String COMPLETION_UP = "completion-up"; private static final String COMPLETION_DOWN = "completion-down"; private static final String COMPLETION_PGUP = "completion-pgup"; private static final String COMPLETION_PGDN = "completion-pgdn"; private static final String COMPLETION_BEGIN = "completion-begin"; private static final String COMPLETION_END = "completion-end";
58 private static final int ACTION_COMPLETION_UP = 1;
59 private static final int ACTION_COMPLETION_DOWN = 2;
60 private static final int ACTION_COMPLETION_PGUP = 3;
61 private static final int ACTION_COMPLETION_PGDN = 4;
62 private static final int ACTION_COMPLETION_BEGIN = 5;
63 private static final int ACTION_COMPLETION_END = 6;
64
65 private JTextComponent component;
66
67 private ListCompletionView view;
68 private JLabel topLabel;
69
70 private Dimension minSize;
71 private Dimension maxSize;
72 private Dimension scrollBarSize;
73
74 public ScrollCompletionPane(JTextComponent component, LazyFixList fixes, String title, ListSelectionListener listener) {
75 this.component = component;
76
77 Dimension smallSize = super.getPreferredSize();
79 setHorizontalScrollBarPolicy(HORIZONTAL_SCROLLBAR_NEVER);
80 setVerticalScrollBarPolicy(VERTICAL_SCROLLBAR_ALWAYS);
81 scrollBarSize = super.getPreferredSize();
82 scrollBarSize.width -= smallSize.width;
83 scrollBarSize.height -= smallSize.height;
84 setVerticalScrollBarPolicy(VERTICAL_SCROLLBAR_AS_NEEDED);
85 setBorder(
86 BorderFactory.createCompoundBorder(
87 BorderFactory.createLineBorder(java.awt.SystemColor.controlDkShadow),
88 BorderFactory.createEmptyBorder(4, 4, 4, 4)));
89 setViewportBorder( null );
90 Settings.addSettingsChangeListener(this);
91 settingsChange(null);
93 view = new ListCompletionView();
95 setBackground(view.getBackground());
96 view.setResult(fixes);
98 resetViewSize();
99 setViewportView(view);
100
101 setTitle(title);
102 installKeybindings();
103 setFocusable (false);
104 view.setFocusable (false);
105 }
106
107 public ListCompletionView getView() {
108 return view;
109 }
110
111 public void reset(LazyFixList fixes, String title) {
112 view.setResult(fixes);
113 resetViewSize();
114 setTitle(title);
115 }
116
117 public Fix getSelectedFix() {
118 Object ret = view.getSelectedValue();
119 return ret instanceof Fix ? (Fix) ret : null;
120 }
121
122 public void settingsChange(SettingsChangeEvent evt) {
123 Class kitClass = Utilities.getKitClass(component);
124 if (kitClass != null) {
125 minSize = (Dimension )SettingsUtil.getValue(kitClass,
126 ExtSettingsNames.COMPLETION_PANE_MIN_SIZE,
127 ExtSettingsDefaults.defaultCompletionPaneMinSize);
128 setMinimumSize(minSize);
129
130 maxSize = (Dimension )SettingsUtil.getValue(kitClass,
131 ExtSettingsNames.COMPLETION_PANE_MAX_SIZE,
132 ExtSettingsDefaults.defaultCompletionPaneMaxSize);
133 setMaximumSize(maxSize);
134 }
135 }
136
137 public Dimension getPreferredSize() {
138 Dimension ps = super.getPreferredSize();
139
140
142 int width = ps.width + scrollBarSize.width;
143 boolean displayHorizontalScrollbar = width > maxSize.width;
144 width = Math.max(Math.max(width, minSize.width),
145 getTitleComponentPreferredSize().width);
146 width = Math.min(width, maxSize.width);
147
148 int height = displayHorizontalScrollbar ? ps.height + scrollBarSize.height : ps.height;
149 height = Math.min(height, maxSize.height);
150 height = Math.max(height, minSize.height);
151 return new Dimension (width, height);
152 }
153
154 private void resetViewSize() {
155 Dimension viewSize = view.getPreferredSize();
156 if (viewSize.width > maxSize.width - scrollBarSize.width) {
157 viewSize.width = maxSize.width - scrollBarSize.width;
158 view.setPreferredSize(viewSize);
159 }
160 }
161
162 private void setTitle(String title) {
163 if (title == null) {
164 if (topLabel != null) {
165 setColumnHeader(null);
166 topLabel = null;
167 }
168 } else {
169 if (topLabel != null) {
170 topLabel.setText(title);
171 } else {
172 topLabel = new JLabel(title);
173 topLabel.setForeground(Color.blue);
174 topLabel.setBorder(BorderFactory.createEmptyBorder(0, 2, 0, 2));
175 setColumnHeaderView(topLabel);
176 }
177 }
178 }
179
180 private Dimension getTitleComponentPreferredSize() {
181 return topLabel != null ? topLabel.getPreferredSize() : new Dimension ();
182 }
183
184
185 private KeyStroke[] findEditorKeys(String editorActionName, KeyStroke defaultKey) {
186 KeyStroke[] ret = new KeyStroke[] { defaultKey };
189 if (component != null) {
190 TextUI ui = component.getUI();
191 Keymap km = component.getKeymap();
192 if (ui != null && km != null) {
193 EditorKit kit = ui.getEditorKit(component);
194 if (kit instanceof BaseKit) {
195 Action a = ((BaseKit)kit).getActionByName(editorActionName);
196 if (a != null) {
197 KeyStroke[] keys = km.getKeyStrokesForAction(a);
198 if (keys != null && keys.length > 0) {
199 ret = keys;
200 }
201 }
202 }
203 }
204 }
205 return ret;
206 }
207
208 private void registerKeybinding(int action, String actionName, KeyStroke stroke, String editorActionName){
209 KeyStroke[] keys = findEditorKeys(editorActionName, stroke);
210 for (int i = 0; i < keys.length; i++) {
211 getInputMap().put(keys[i], actionName);
212 }
213 getActionMap().put(actionName, new CompletionPaneAction(action));
214 }
215
216 private void installKeybindings() {
217 registerKeybinding(ACTION_COMPLETION_UP, COMPLETION_UP,
219 KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0),
220 BaseKit.upAction
221 );
222
223 registerKeybinding(ACTION_COMPLETION_DOWN, COMPLETION_DOWN,
225 KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0),
226 BaseKit.downAction
227 );
228
229 registerKeybinding(ACTION_COMPLETION_PGDN, COMPLETION_PGDN,
231 KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_DOWN, 0),
232 BaseKit.pageDownAction
233 );
234
235 registerKeybinding(ACTION_COMPLETION_PGUP, COMPLETION_PGUP,
237 KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_UP, 0),
238 BaseKit.pageUpAction
239 );
240
241 registerKeybinding(ACTION_COMPLETION_BEGIN, COMPLETION_BEGIN,
243 KeyStroke.getKeyStroke(KeyEvent.VK_HOME, 0),
244 BaseKit.beginLineAction
245 );
246
247 registerKeybinding(ACTION_COMPLETION_END, COMPLETION_END,
249 KeyStroke.getKeyStroke(KeyEvent.VK_END, 0),
250 BaseKit.endLineAction
251 );
252 }
253
254 private class CompletionPaneAction extends AbstractAction {
255 private int action;
256
257 private CompletionPaneAction(int action) {
258 this.action = action;
259 }
260
261 public void actionPerformed(java.awt.event.ActionEvent actionEvent) {
262 switch (action) {
263 case ACTION_COMPLETION_UP:
264 view.up();
265 break;
266 case ACTION_COMPLETION_DOWN:
267 view.down();
268 break;
269 case ACTION_COMPLETION_PGUP:
270 view.pageUp();
271 break;
272 case ACTION_COMPLETION_PGDN:
273 view.pageDown();
274 break;
275 case ACTION_COMPLETION_BEGIN:
276 view.begin();
277 break;
278 case ACTION_COMPLETION_END:
279 view.end();
280 break;
281 }
282 }
283 }
284 }
285 |
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