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1
11 package org.eclipse.jdt.internal.ui.wizards.dialogfields;
12
13 import org.eclipse.core.runtime.Assert;
14
15 import org.eclipse.swt.SWT;
16 import org.eclipse.swt.events.SelectionEvent;
17 import org.eclipse.swt.events.SelectionListener;
18 import org.eclipse.swt.layout.GridData;
19 import org.eclipse.swt.layout.GridLayout;
20 import org.eclipse.swt.widgets.Button;
21 import org.eclipse.swt.widgets.Composite;
22 import org.eclipse.swt.widgets.Control;
23 import org.eclipse.swt.widgets.Group;
24 import org.eclipse.swt.widgets.Label;
25
26
27
30 public class SelectionButtonDialogFieldGroup extends DialogField {
31
32 private Composite fButtonComposite;
33
34 private Button[] fButtons;
35 private String  [] fButtonNames;
36 private boolean[] fButtonsSelected;
37 private boolean[] fButtonsEnabled;
38
39 private int fGroupBorderStyle;
40 private int fGroupNumberOfColumns;
41 private int fButtonsStyle;
42
43
46 public SelectionButtonDialogFieldGroup(int buttonsStyle, String [] buttonNames, int nColumns) {
47 this(buttonsStyle, buttonNames, nColumns, SWT.NONE);
48 }
49
50
51
56 public SelectionButtonDialogFieldGroup(int buttonsStyle, String [] buttonNames, int nColumns, int borderStyle) {
57 super();
58
59 Assert.isTrue(buttonsStyle == SWT.RADIO || buttonsStyle == SWT.CHECK || buttonsStyle == SWT.TOGGLE);
60 fButtonNames= buttonNames;
61 fButtonsStyle= buttonsStyle;
62
63 int nButtons= buttonNames.length;
64 fButtonsSelected= new boolean[nButtons];
65 fButtonsEnabled= new boolean[nButtons];
66 for (int i= 0; i < nButtons; i++) {
67 fButtonsSelected[i]= false;
68 fButtonsEnabled[i]= true;
69 }
70 if (buttonsStyle == SWT.RADIO) {
71 fButtonsSelected[0]= true;
72 }
73
74 fGroupBorderStyle= borderStyle;
75 fGroupNumberOfColumns= (nColumns <= 0) ? nButtons : nColumns;
76
77
78
79 }
80
81
83
86 public Control[] doFillIntoGrid(Composite parent, int nColumns) {
87 assertEnoughColumns(nColumns);
88
89 if (fGroupBorderStyle == SWT.NONE) {
90 Label label= getLabelControl(parent);
91 label.setLayoutData(gridDataForLabel(1));
92
93 Composite buttonsgroup= getSelectionButtonsGroup(parent);
94 GridData gd= new GridData();
95 gd.horizontalSpan= nColumns - 1;
96 buttonsgroup.setLayoutData(gd);
97
98 return new Control[] { label, buttonsgroup };
99 } else {
100 Composite buttonsgroup= getSelectionButtonsGroup(parent);
101 GridData gd= new GridData();
102 gd.horizontalSpan= nColumns;
103 buttonsgroup.setLayoutData(gd);
104
105 return new Control[] { buttonsgroup };
106 }
107 }
108
109
112 public int getNumberOfControls() {
113 return (fGroupBorderStyle == SWT.NONE) ? 2 : 1;
114 }
115
116
118 private Button createSelectionButton(int index, Composite group, SelectionListener listener) {
119 Button button= new Button(group, fButtonsStyle | SWT.LEFT);
120 button.setFont(group.getFont());
121 button.setText(fButtonNames[index]);
122 button.setEnabled(isEnabled() && fButtonsEnabled[index]);
123 button.setSelection(fButtonsSelected[index]);
124 button.addSelectionListener(listener);
125 button.setLayoutData(new GridData());
126 return button;
127 }
128
129
134 public Composite getSelectionButtonsGroup(Composite parent) {
135 if (fButtonComposite == null) {
136 assertCompositeNotNull(parent);
137
138 GridLayout layout= new GridLayout();
139 layout.makeColumnsEqualWidth= true;
140 layout.numColumns= fGroupNumberOfColumns;
141
142 if (fGroupBorderStyle != SWT.NONE) {
143 Group group= new Group(parent, fGroupBorderStyle);
144 group.setFont(parent.getFont());
145 if (fLabelText != null && fLabelText.length() > 0) {
146 group.setText(fLabelText);
147 }
148 fButtonComposite= group;
149 } else {
150 fButtonComposite= new Composite(parent, SWT.NONE);
151 fButtonComposite.setFont(parent.getFont());
152 layout.marginHeight= 0;
153 layout.marginWidth= 0;
154 }
155
156 fButtonComposite.setLayout(layout);
157
158 SelectionListener listener= new SelectionListener() {
159 public void widgetDefaultSelected(SelectionEvent e) {
160 doWidgetSelected(e);
161 }
162 public void widgetSelected(SelectionEvent e) {
163 doWidgetSelected(e);
164 }
165 };
166 int nButtons= fButtonNames.length;
167 fButtons= new Button[nButtons];
168 for (int i= 0; i < nButtons; i++) {
169 fButtons[i]= createSelectionButton(i, fButtonComposite, listener);
170 }
171 int nRows= nButtons / fGroupNumberOfColumns;
172 int nFillElements= nRows * fGroupNumberOfColumns - nButtons;
173 for (int i= 0; i < nFillElements; i++) {
174 createEmptySpace(fButtonComposite);
175 }
176 }
177 return fButtonComposite;
178 }
179
180
183 public Button getSelectionButton(int index) {
184 if (index >= 0 && index < fButtons.length) {
185 return fButtons[index];
186 }
187 return null;
188 }
189
190 private void doWidgetSelected(SelectionEvent e) {
191 Button button= (Button)e.widget;
192 for (int i= 0; i < fButtons.length; i++) {
193 if (fButtons[i] == button) {
194 fButtonsSelected[i]= button.getSelection();
195 dialogFieldChanged();
196 return;
197 }
198 }
199 }
200
201
203
207 public boolean isSelected(int index) {
208 if (index >= 0 && index < fButtonsSelected.length) {
209 return fButtonsSelected[index];
210 }
211 return false;
212 }
213
214
217 public void setSelection(int index, boolean selected) {
218 if (index >= 0 && index < fButtonsSelected.length) {
219 if (fButtonsSelected[index] != selected) {
220 fButtonsSelected[index]= selected;
221 if (fButtons != null) {
222 Button button= fButtons[index];
223 if (isOkToUse(button)) {
224 button.setSelection(selected);
225 }
226 }
227 }
228 }
229 }
230
231
233 protected void updateEnableState() {
234 super.updateEnableState();
235 if (fButtons != null) {
236 boolean enabled= isEnabled();
237 for (int i= 0; i < fButtons.length; i++) {
238 Button button= fButtons[i];
239 if (isOkToUse(button)) {
240 button.setEnabled(enabled && fButtonsEnabled[i]);
241 }
242 }
243 }
244 }
245
246
249 public void enableSelectionButton(int index, boolean enable) {
250 if (index >= 0 && index < fButtonsEnabled.length) {
251 fButtonsEnabled[index]= enable;
252 if (fButtons != null) {
253 Button button= fButtons[index];
254 if (isOkToUse(button)) {
255 button.setEnabled(isEnabled() && enable);
256 }
257 }
258 }
259 }
260
261
262
265 public void refresh() {
266 super.refresh();
267 for (int i= 0; i < fButtons.length; i++) {
268 Button button= fButtons[i];
269 if (isOkToUse(button)) {
270 button.setSelection(fButtonsSelected[i]);
271 }
272 }
273 }
274
275 }
276 |
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