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1 package org.eclipse.emf.examples.jet.article2.ui;
2
3
4 import java.util.ArrayList  ;
5 import java.util.Iterator ;
6 import java.util.List ;
7
8 import org.eclipse.jface.dialogs.Dialog;
9 import org.eclipse.jface.viewers.CheckStateChangedEvent;
10 import org.eclipse.jface.viewers.CheckboxTableViewer;
11 import org.eclipse.jface.viewers.ColumnWeightData;
12 import org.eclipse.jface.viewers.DoubleClickEvent;
13 import org.eclipse.jface.viewers.ICheckStateListener;
14 import org.eclipse.jface.viewers.IDoubleClickListener;
15 import org.eclipse.jface.viewers.ISelectionChangedListener;
16 import org.eclipse.jface.viewers.IStructuredContentProvider;
17 import org.eclipse.jface.viewers.IStructuredSelection;
18 import org.eclipse.jface.viewers.ITableLabelProvider;
19 import org.eclipse.jface.viewers.LabelProvider;
20 import org.eclipse.jface.viewers.SelectionChangedEvent;
21 import org.eclipse.jface.viewers.StructuredSelection;
22 import org.eclipse.jface.viewers.TableLayout;
23 import org.eclipse.jface.viewers.Viewer;
24 import org.eclipse.jface.wizard.WizardPage;
25 import org.eclipse.swt.SWT;
26 import org.eclipse.swt.events.SelectionAdapter;
27 import org.eclipse.swt.events.SelectionEvent;
28 import org.eclipse.swt.graphics.Image;
29 import org.eclipse.swt.graphics.Rectangle;
30 import org.eclipse.swt.layout.GridData;
31 import org.eclipse.swt.layout.GridLayout;
32 import org.eclipse.swt.widgets.Button;
33 import org.eclipse.swt.widgets.Composite;
34 import org.eclipse.swt.widgets.Table;
35 import org.eclipse.swt.widgets.TableColumn;
36 import org.eclipse.swt.widgets.TableItem;
37
38 import org.eclipse.emf.examples.jet.article2.model.Attribute;
39 import org.eclipse.emf.examples.jet.article2.model.NameUtil;
40 import org.eclipse.emf.examples.jet.article2.model.TypesafeEnum;
41
42
43
44
51 public class NewTypesafeEnumCreationWizardPageAttributes extends WizardPage
52 {
53
54 private final static String PAGE_NAME = "AttributesPage";
56 privatefinal String [] COLUMN_NAMES = new String []{ WizardMessages.getString("NewEnumWizPageAttr.col.Key"), WizardMessages.getString("NewEnumWizPageAttr.col.Name"), WizardMessages.getString("NewEnumWizPageAttr.col.Type"), };
60
61 private static final int COL_KEY = 0;
62
63 private static final int COL_NAME = 1;
64
65 private static final int COL_TYPE = 2;
66
67 private static final int[] COLUMN_WIDTHS = new int []{ 40, 200, 200, };
68
69 private CheckboxTableViewer mTableViewer = null;
70
71 private Table mTableWidget = null;
72
73 private Button mButtonAdd = null;
74
75 private Button mButtonEdit = null;
76
77 private Button mButtonRemove = null;
78
79
82 protected class AttributeContentProvider implements IStructuredContentProvider
83 {
84 public Object [] getElements(Object inputElement)
85 {
86 List result = new ArrayList ();
87 for (Iterator i = ((TypesafeEnum)inputElement).attributes(); i.hasNext();)
88 {
89 result.add(i.next());
90 }
91 return result.toArray();
92 }
93
94 public void dispose()
95 {
96 }
97
98 public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
99 {
100 }
101 }
102
103
106 protected class AttributeLabelProvider extends LabelProvider implements ITableLabelProvider
107 {
108
109 public Image getColumnImage(Object element, int columnIndex)
110 {
111 return null;
112 }
113
114 public String getColumnText(Object element, int columnIndex)
115 {
116 if (element instanceof Attribute)
117 {
118 Attribute attribute = (Attribute)element;
119
120 switch (columnIndex)
121 {
122 case COL_NAME:
123 return attribute.getName() == null ? "" : attribute.getName();
124
125 case COL_TYPE:
126 return attribute.getType();
127
128 case COL_KEY:
129 mTableViewer.setChecked(attribute, attribute.isKey());
130 return "";
131 }
132 }
133 return null;
134 }
135 }
136
137
140 public NewTypesafeEnumCreationWizardPageAttributes()
141 {
142 super(PAGE_NAME);
143 setTitle(WizardMessages.getString("NewEnumWizPageAttr.title")); setDescription(WizardMessages.getString("NewEnumWizPageAttr.description")); }
146
147
152 public void createControl(Composite parent)
153 {
154 initializeDialogUnits(parent);
155 Composite container = new Composite(parent, SWT.NONE);
156 GridLayout layout = new GridLayout();
157 layout.numColumns = 2;
158 container.setLayout(layout);
159
160 container.setLayoutData(new GridData(GridData.FILL_BOTH));
161
162 createTableWidget(container);
163 createButtonsPanel(container);
164
165 hookListeners();
166 updateEnabledState();
167 mButtonAdd.forceFocus();
168
169 setControl(container);
170 Dialog.applyDialogFont(container);
171 setPageComplete(false);
172 }
173
174
177 private void hookListeners()
178 {
179 mTableViewer.addCheckStateListener(new ICheckStateListener()
180 {
181 public void checkStateChanged(CheckStateChangedEvent event)
182 {
183 Object element = event.getElement();
184 if (element instanceof TableItem)
185 { element = ((TableItem)element).getData();
187 }
188 if (element instanceof Attribute)
189 {
190 Attribute attribute = (Attribute)element;
191 attribute.setKey(event.getChecked());
192 validatePage();
193 }
194 }
195 });
196 mTableViewer.addSelectionChangedListener(new ISelectionChangedListener()
197 {
198 public void selectionChanged(SelectionChangedEvent event)
199 {
200 updateEnabledState();
201 }
202 });
203 mTableViewer.addDoubleClickListener(new IDoubleClickListener()
204 {
205 public void doubleClick(DoubleClickEvent event)
206 {
207 handleEditPressed();
208
209 }
210 });
211
212 mButtonAdd.addSelectionListener(new SelectionAdapter()
213 {
214 public void widgetSelected(SelectionEvent e)
215 {
216 handleAddPressed();
217 }
218 });
219 mButtonEdit.addSelectionListener(new SelectionAdapter()
220 {
221 public void widgetSelected(SelectionEvent e)
222 {
223 handleEditPressed();
224 }
225 });
226 mButtonRemove.addSelectionListener(new SelectionAdapter()
227 {
228 public void widgetSelected(SelectionEvent e)
229 {
230 handleRemovePressed();
231 }
232 });
233 }
234
235 private void updateEnabledState()
236 {
237
238 mTableWidget.setEnabled(mTableWidget.getItemCount() > 0);
239
240 boolean enabled = (mTableWidget.getSelectionCount() > 0);
241 mButtonEdit.setEnabled(enabled);
242 mButtonRemove.setEnabled(enabled);
243 }
244
245 private void handleAddPressed()
246 {
247 EditAttributeDialog dialog = new EditAttributeDialog(getShell());
248 dialog.setAttribute(new Attribute());
249 dialog.setTitle(WizardMessages.getString("NewEnumWizPageAttr.Add_Attribute"));
250 int reply = dialog.open();
251 if (reply == EditAttributeDialog.OK)
252 {
253 getTypesafeEnumModel().addAttribute(dialog.getAttribute());
254 mTableViewer.refresh();
255 mTableViewer.setSelection(new StructuredSelection(dialog.getAttribute()));
256 mTableViewer.setChecked(dialog.getAttribute(), dialog.getAttribute().isKey());
257 }
258 updateEnabledState();
259 ((NewTypesafeEnumCreationWizardPageInstances)getNextPage()).setPageComplete(false);
260 validatePage();
261 mButtonAdd.forceFocus();
262 }
263
264 private void handleEditPressed()
265 {
266 Attribute attribute = getSelectedAttribute();
267 if (attribute == null)
268 {
269 return;
270 }
271
272 EditAttributeDialog dialog = new EditAttributeDialog(getShell());
273 dialog.setAttribute(attribute);
274 dialog.setTitle(WizardMessages.getString("NewEnumWizPageAttr.Edit_Attribute"));
275 int reply = dialog.open();
276 mTableViewer.refresh();
277 mTableViewer.setSelection(new StructuredSelection(dialog.getAttribute()));
278 mTableViewer.setChecked(dialog.getAttribute(), dialog.getAttribute().isKey());
279 updateEnabledState();
280 validatePage();
281 }
282
283 private void handleRemovePressed()
284 {
285 Attribute attribute = getSelectedAttribute();
286 if (attribute == null)
287 {
288 return;
289 }
290 getTypesafeEnumModel().removeAttribute(attribute);
291 mTableViewer.refresh();
292 updateEnabledState();
293 validatePage();
294 }
295
296 private Attribute getSelectedAttribute()
297 {
298 IStructuredSelection selection = (IStructuredSelection)mTableViewer.getSelection();
299 if (selection.isEmpty())
300 {
301 return null;
302 }
303
304 Object element = selection.getFirstElement();
305 if (element instanceof TableItem)
306 { element = ((TableItem)element).getData();
308 }
309 Attribute attribute = (Attribute)element;
310 return attribute;
311 }
312
313
316 private void createButtonsPanel(Composite parent)
317 {
318 Composite panel = new Composite(parent, SWT.NONE);
319 GridLayout layout = new GridLayout();
320 layout.numColumns = 3;
321 panel.setLayout(layout);
322
323 mButtonAdd = new Button(panel, SWT.PUSH);
324 mButtonEdit = new Button(panel, SWT.PUSH);
325 mButtonRemove = new Button(panel, SWT.PUSH);
326
327 mButtonAdd.setText(WizardMessages.getString("NewEnumWizPageAttr.button.Add"));
328 mButtonEdit.setText(WizardMessages.getString("NewEnumWizPageAttr.button.Edit"));
329 mButtonRemove.setText(WizardMessages.getString("NewEnumWizPageAttr.button.Remove"));
330 }
331
332 private void createTableWidget(Composite container)
333 {
334 mTableWidget = new Table(container, SWT.CHECK | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);
335 mTableWidget.setHeaderVisible(true);
336 mTableWidget.setLinesVisible(true);
337
338 int listHeight = mTableWidget.getItemHeight() * 10; Rectangle trim = mTableWidget.computeTrim(0, 0, 0, listHeight);
340 GridData tblGD = new GridData(GridData.FILL_BOTH);
341 tblGD.heightHint = trim.height;
342 tblGD.horizontalSpan = 2; mTableWidget.setLayoutData(tblGD);
344
345 TableLayout tableLayout = new TableLayout();
346 for (int i = 0; i < COLUMN_WIDTHS.length; i++)
347 {
348 tableLayout.addColumnData(new ColumnWeightData(1, COLUMN_WIDTHS[i], true));
349 }
350 mTableWidget.setLayout(tableLayout);
351
352 for (int i = 0; i < COLUMN_NAMES.length; i++)
353 {
354 new TableColumn(mTableWidget, SWT.NONE).setText(COLUMN_NAMES[i]);
355 }
356 mTableWidget.pack();
357
358 mTableViewer = new CheckboxTableViewer(mTableWidget);
359 mTableViewer.setColumnProperties(COLUMN_NAMES);
362 mTableViewer.setLabelProvider(new AttributeLabelProvider());
363 mTableViewer.setContentProvider(new AttributeContentProvider());
364 mTableViewer.setInput(getTypesafeEnumModel());
365 }
366
367
370 private void validatePage()
371 {
372 TypesafeEnum type = getTypesafeEnumModel();
373 if (type.attributeCount() == 0)
374 {
375 setErrorMessage(WizardMessages.getString("NewEnumWizPageAttr.Must_have_at_least_one_attribute"));
376 setPageComplete(false);
377 return;
378 }
379 for (Iterator i = type.attributes(); i.hasNext();)
380 {
381 Attribute attribute = (Attribute)i.next();
382 if (attribute.getName().length() == 0)
383 {
384 setErrorMessage(WizardMessages.getString("NewEnumWizPageAttr.attribute_must_have_a_name"));
385 setPageComplete(false);
386 return;
387 }
388 if (!NameUtil.isValidIdentifier(attribute.getName()))
389 {
390 setErrorMessage(WizardMessages.getFormattedString("NewEnumWizPageAttr.invalid_attribute_name", attribute.getName()));
391 setPageComplete(false);
392 return;
393 }
394 if (attribute.getType().length() == 0)
395 {
396 setErrorMessage(WizardMessages.getFormattedString("NewEnumWizPageAttr.attribute_must_have_a_type", attribute.getName()));
397 setPageComplete(false);
398 return;
399 }
400 if (!NameUtil.isValidIdentifier(attribute.getType()))
401 {
402 setErrorMessage(WizardMessages.getFormattedString("NewEnumWizPageAttr.invalid_attribute_type", attribute.getType()));
403 setPageComplete(false);
404 return;
405 }
406 }
407 if (type.keyAttributes().hasNext() == false)
408 {
409 setErrorMessage(WizardMessages.getString("NewEnumWizPageAttr.missing_key_attribute"));
410 setPageComplete(false);
411 return;
412 }
413 setErrorMessage(null);
414 setPageComplete(true);
415 }
416
417
422 public TypesafeEnum getTypesafeEnumModel()
423 {
424 return ((NewTypesafeEnumCreationWizardPage)getPreviousPage()).getTypesafeEnumModel();
425 }
426 } |
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