1
|
/**
|
2
|
*
|
3
|
*/
|
4
|
package eu.etaxonomy.taxeditor.ui.section;
|
5
|
|
6
|
import java.util.ArrayList;
|
7
|
import java.util.Collection;
|
8
|
import java.util.Collections;
|
9
|
import java.util.Comparator;
|
10
|
import java.util.EnumSet;
|
11
|
import java.util.List;
|
12
|
import java.util.Observable;
|
13
|
import java.util.Observer;
|
14
|
|
15
|
import org.eclipse.jface.action.Action;
|
16
|
import org.eclipse.jface.action.IAction;
|
17
|
import org.eclipse.jface.action.ToolBarManager;
|
18
|
import org.eclipse.jface.resource.ImageDescriptor;
|
19
|
import org.eclipse.swt.SWT;
|
20
|
import org.eclipse.swt.events.DisposeEvent;
|
21
|
import org.eclipse.swt.events.DisposeListener;
|
22
|
import org.eclipse.swt.events.SelectionAdapter;
|
23
|
import org.eclipse.swt.events.SelectionEvent;
|
24
|
import org.eclipse.swt.events.SelectionListener;
|
25
|
import org.eclipse.swt.graphics.Color;
|
26
|
import org.eclipse.swt.graphics.ImageData;
|
27
|
import org.eclipse.swt.widgets.Composite;
|
28
|
import org.eclipse.swt.widgets.Control;
|
29
|
import org.eclipse.swt.widgets.Label;
|
30
|
import org.eclipse.ui.forms.events.ExpansionEvent;
|
31
|
import org.eclipse.ui.forms.events.IExpansionListener;
|
32
|
import org.eclipse.ui.forms.widgets.ExpandableComposite;
|
33
|
|
34
|
import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
|
35
|
import eu.etaxonomy.cdm.common.CdmUtils;
|
36
|
import eu.etaxonomy.cdm.model.permission.CRUD;
|
37
|
import eu.etaxonomy.taxeditor.model.AbstractUtility;
|
38
|
import eu.etaxonomy.taxeditor.model.ImageResources;
|
39
|
import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;
|
40
|
import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
|
41
|
import eu.etaxonomy.taxeditor.preference.Resources;
|
42
|
import eu.etaxonomy.taxeditor.store.CdmStore;
|
43
|
import eu.etaxonomy.taxeditor.store.LoginManager;
|
44
|
import eu.etaxonomy.taxeditor.store.StoreUtil;
|
45
|
import eu.etaxonomy.taxeditor.ui.element.AbstractFormSection;
|
46
|
import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
|
47
|
import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
|
48
|
|
49
|
/**
|
50
|
* This class visualizes an CDM entity of type ENTITY and additionally provides the functionality to add
|
51
|
* other elements of type ELEMENT to them.
|
52
|
*
|
53
|
* @param <ENTITY> A CDM entity which should be visualized by this section.
|
54
|
* @param <ELEMENT> An element that can be added (multiple times) to this entity.
|
55
|
*
|
56
|
* @author n.hoffmann
|
57
|
*/
|
58
|
public abstract class AbstractEntityCollectionSection<ENTITY, ELEMENT> extends AbstractFormSection<ENTITY> implements IExpansionListener, Observer {
|
59
|
|
60
|
private static final EnumSet<CRUD> UPDATE = EnumSet.of(CRUD.UPDATE);
|
61
|
|
62
|
protected Composite container;
|
63
|
|
64
|
private Label label_empty;
|
65
|
|
66
|
private String title;
|
67
|
|
68
|
private AbstractEntityCollectionElement<ENTITY> entityCollectionElement;
|
69
|
|
70
|
public AbstractEntityCollectionSection(CdmFormFactory formFactory, ConversationHolder conversation, ICdmFormElement parentElement, String title, int style) {
|
71
|
super(formFactory, parentElement, ExpandableComposite.CLIENT_INDENT | style);
|
72
|
this.title = title;
|
73
|
this.setText(getTitleString());
|
74
|
updateToolbar();
|
75
|
|
76
|
addExpansionListener(this);
|
77
|
|
78
|
CdmStore.getLoginManager().addObserver(this);
|
79
|
addDisposeListener(new DisposeListener() {
|
80
|
@Override
|
81
|
public void widgetDisposed(DisposeEvent e) {
|
82
|
CdmStore.getLoginManager().deleteObserver(AbstractEntityCollectionSection.this);
|
83
|
}
|
84
|
});
|
85
|
}
|
86
|
|
87
|
protected Control createToolbar() {
|
88
|
ToolBarManager toolBarManager = new ToolBarManager(SWT.FLAT);
|
89
|
|
90
|
Action addAction = new Action("Add", IAction.AS_PUSH_BUTTON){
|
91
|
@Override
|
92
|
public void run() {
|
93
|
ELEMENT element = createNewElement();
|
94
|
if(element != null){
|
95
|
addElement(element);
|
96
|
if(! getSection().isExpanded()) {
|
97
|
getSection().setExpanded(true);
|
98
|
}
|
99
|
internalUpdateSection(true);
|
100
|
}
|
101
|
}
|
102
|
};
|
103
|
addAction.setImageDescriptor(new ImageDescriptor() {
|
104
|
|
105
|
@Override
|
106
|
public ImageData getImageData() {
|
107
|
return ImageResources.getImage(ImageResources.ADD_ICON).getImageData();
|
108
|
}
|
109
|
});
|
110
|
addAction.setToolTipText(getTooltipString());
|
111
|
|
112
|
Action browseAction = null;
|
113
|
if(allowAddExisting()){
|
114
|
browseAction = new Action("Browse", IAction.AS_PUSH_BUTTON){
|
115
|
@Override
|
116
|
public void run() {
|
117
|
ELEMENT element = addExisting();
|
118
|
if(element != null){
|
119
|
addElement(element);
|
120
|
if(! getSection().isExpanded()) {
|
121
|
getSection().setExpanded(true);
|
122
|
}
|
123
|
internalUpdateSection(true);
|
124
|
}
|
125
|
}
|
126
|
};
|
127
|
browseAction.setImageDescriptor(new ImageDescriptor() {
|
128
|
|
129
|
@Override
|
130
|
public ImageData getImageData() {
|
131
|
return ImageResources.getImage(ImageResources.BROWSE_ICON).getImageData();
|
132
|
}
|
133
|
});
|
134
|
browseAction.setToolTipText("Browse");
|
135
|
}
|
136
|
|
137
|
toolBarManager.add(addAction);
|
138
|
if(browseAction!=null){
|
139
|
toolBarManager.add(browseAction);
|
140
|
}
|
141
|
|
142
|
addAction(toolBarManager);
|
143
|
|
144
|
return toolBarManager.createControl(this);
|
145
|
}
|
146
|
|
147
|
protected void addAction(ToolBarManager toolBarManager) {
|
148
|
// default implementation empty
|
149
|
}
|
150
|
|
151
|
/**
|
152
|
* using this method is discouraged, use updateToolBar() instead
|
153
|
*/
|
154
|
public void showToolbar(){
|
155
|
setTextClient(createToolbar());
|
156
|
}
|
157
|
|
158
|
/**
|
159
|
* using this method is discouraged, use updateToolBar() instead
|
160
|
*/
|
161
|
public void removeToolbar(){
|
162
|
setTextClient(null);
|
163
|
}
|
164
|
|
165
|
@Override
|
166
|
public void setEntity(ENTITY entity) {
|
167
|
if(entity != null){
|
168
|
super.setEntity(entity);
|
169
|
internalUpdateSection(false);
|
170
|
}
|
171
|
setSectionTitle();
|
172
|
updateToolbar();
|
173
|
layout();
|
174
|
}
|
175
|
|
176
|
/**
|
177
|
* Sets the title for the section. Adds a "+" sign if the collection is not empty for this section.
|
178
|
* Override in subclasses if you want to have a different behaviour.
|
179
|
*/
|
180
|
protected void setSectionTitle() {
|
181
|
Collection<ELEMENT> collection = getCollection(getEntity());
|
182
|
if(collection != null && collection.size() > 0){
|
183
|
this.setText(getTitleString() + " +");
|
184
|
}else{
|
185
|
this.setText(getTitleString());
|
186
|
}
|
187
|
}
|
188
|
|
189
|
/**
|
190
|
* Removes all content from the container
|
191
|
*/
|
192
|
private void destroyDynamicContent(){
|
193
|
if(label_empty != null){
|
194
|
label_empty.dispose();
|
195
|
label_empty = null;
|
196
|
}
|
197
|
removeElements();
|
198
|
}
|
199
|
|
200
|
/**
|
201
|
* Call this method after dynamically changing the client area.
|
202
|
* If the options changed is set to <code>true</code>, will also fire a state changed
|
203
|
* event to inform the user of unsaved changes.
|
204
|
*
|
205
|
* @param changed a boolean.
|
206
|
*/
|
207
|
protected void internalUpdateSection(boolean changed){
|
208
|
setSectionTitle();
|
209
|
destroyDynamicContent();
|
210
|
if(isExpanded() || expandSectionWhenContentAvailable()) {
|
211
|
renderContent(isExpanded());
|
212
|
}
|
213
|
if(changed) {
|
214
|
firePropertyChangeEvent(this);
|
215
|
}
|
216
|
}
|
217
|
|
218
|
/**
|
219
|
* Create the elements to be shown in this section client area
|
220
|
*/
|
221
|
private void renderContent(boolean forceExpansion)
|
222
|
{
|
223
|
Collection<ELEMENT> collection = getCollection(getEntity());
|
224
|
|
225
|
if(collection == null || collection.isEmpty()){
|
226
|
createEmptyContent();
|
227
|
}else{
|
228
|
List<ELEMENT> elements = new ArrayList<>(collection);
|
229
|
Collections.sort(elements, getComparator());
|
230
|
createDynamicContents(elements);
|
231
|
forceExpansion = true;
|
232
|
}
|
233
|
|
234
|
this.setExpanded(forceExpansion);
|
235
|
|
236
|
reflow();
|
237
|
}
|
238
|
|
239
|
protected void createEmptyContent(){
|
240
|
label_empty = formFactory.createLabel(getLayoutComposite(), getEmptyString());
|
241
|
}
|
242
|
|
243
|
/**
|
244
|
* Creates the widgets for the collection
|
245
|
*
|
246
|
* @param elements a {@link java.util.Collection} object.
|
247
|
*/
|
248
|
protected void createDynamicContents(Collection<ELEMENT> elements)
|
249
|
{
|
250
|
int i = 0;
|
251
|
for(final ELEMENT element : elements){
|
252
|
SelectionAdapter removeListener = new SelectionAdapter(){
|
253
|
@Override
|
254
|
public void widgetSelected(SelectionEvent e) {
|
255
|
removeElement(element);
|
256
|
internalUpdateSection(true);
|
257
|
}
|
258
|
};
|
259
|
boolean modulo = i++%2 == 0;
|
260
|
String colorResource = modulo ? Resources.COLOR_LIST_EVEN : Resources.COLOR_LIST_ODD;
|
261
|
createElementComposite(element, removeListener, AbstractUtility.getColor(colorResource));
|
262
|
}
|
263
|
}
|
264
|
|
265
|
/**
|
266
|
* Create the specific widget for the element
|
267
|
*
|
268
|
* @param element a ELEMENT object.
|
269
|
* @param removeListener a {@link org.eclipse.swt.events.SelectionListener} object.
|
270
|
* @param backgroundColor a {@link org.eclipse.swt.graphics.Color} object.
|
271
|
*/
|
272
|
protected void createElementComposite(ELEMENT element, SelectionListener removeListener, Color backgroundColor){
|
273
|
entityCollectionElement = formFactory.createEntityCollectionElement(this, element, removeListener, backgroundColor, SWT.NULL);
|
274
|
}
|
275
|
|
276
|
/** {@inheritDoc} */
|
277
|
@Override
|
278
|
public void setBackground(Color color) {
|
279
|
if(label_empty != null && !label_empty.isDisposed()){
|
280
|
label_empty.setBackground(color);
|
281
|
}
|
282
|
super.setBackground(color);
|
283
|
}
|
284
|
|
285
|
/**
|
286
|
* <p>getTitleString</p>
|
287
|
*
|
288
|
* @return a {@link java.lang.String} object.
|
289
|
*/
|
290
|
public String getTitleString() {
|
291
|
return CdmUtils.Nz(title);
|
292
|
}
|
293
|
|
294
|
/**
|
295
|
* <p>setTitleString</p>
|
296
|
*
|
297
|
* @param title a {@link java.lang.String} object.
|
298
|
*/
|
299
|
public void setTitleString(String title){
|
300
|
this.title = title;
|
301
|
setSectionTitle();
|
302
|
layout();
|
303
|
}
|
304
|
|
305
|
/** {@inheritDoc} */
|
306
|
@Override
|
307
|
public void expansionStateChanging(ExpansionEvent e) {
|
308
|
// logger.warn("Expansion State Changing");
|
309
|
}
|
310
|
|
311
|
/** {@inheritDoc} */
|
312
|
@Override
|
313
|
public void expansionStateChanged(ExpansionEvent e) {
|
314
|
if(isExpanded()){
|
315
|
renderContent(isExpanded());
|
316
|
}else{
|
317
|
destroyDynamicContent();
|
318
|
}
|
319
|
}
|
320
|
|
321
|
private boolean expandSectionWhenContentAvailable(){
|
322
|
return PreferencesUtil.getBooleanValue(IPreferenceKeys.SHOULD_EXPAND_SECTION_WHEN_DATA_AVAILABLE, true);
|
323
|
}
|
324
|
|
325
|
/**
|
326
|
* Remove an element from the entities collection and update the section
|
327
|
*
|
328
|
* @param element a ELEMENT object.
|
329
|
*/
|
330
|
public void removeElementAndUpdate(ELEMENT element) {
|
331
|
removeElement(element);
|
332
|
internalUpdateSection(true);
|
333
|
}
|
334
|
|
335
|
@Override
|
336
|
public void update(Observable o, Object arg){
|
337
|
if(o instanceof LoginManager){
|
338
|
updateToolbar();
|
339
|
}
|
340
|
}
|
341
|
|
342
|
protected void updateToolbar() {
|
343
|
if(getEntity() != null && CdmStore.currentAuthentiationHasPermission(StoreUtil.getCdmEntity(getEntity()), UPDATE)){
|
344
|
showToolbar();
|
345
|
} else {
|
346
|
removeToolbar();
|
347
|
}
|
348
|
}
|
349
|
|
350
|
public AbstractEntityCollectionElement<ENTITY> getEntityCollectionElement() {
|
351
|
return entityCollectionElement;
|
352
|
}
|
353
|
|
354
|
/**
|
355
|
* Returns the {@link Comparator} specific for the ELEMENTs
|
356
|
* which is used to sort the elements
|
357
|
* @return the comparator for ELEMENT
|
358
|
*/
|
359
|
public abstract Comparator<ELEMENT> getComparator();
|
360
|
|
361
|
/**
|
362
|
* Get the specific collection of this entity
|
363
|
*
|
364
|
* @param entity a ENTITY object.
|
365
|
* @return a {@link java.util.Collection} object.
|
366
|
*/
|
367
|
public abstract Collection<ELEMENT> getCollection(ENTITY entity);
|
368
|
|
369
|
|
370
|
/**
|
371
|
* Create a new Element for this collection
|
372
|
*
|
373
|
* @return a ELEMENT object.
|
374
|
*/
|
375
|
public abstract ELEMENT createNewElement();
|
376
|
|
377
|
/**
|
378
|
* Add an element to the entities collection
|
379
|
*
|
380
|
* @param element a ELEMENT object.
|
381
|
*/
|
382
|
public abstract void addElement(ELEMENT element);
|
383
|
|
384
|
/**
|
385
|
* Add an existing element to the entities collection.
|
386
|
* @return the existing element
|
387
|
*/
|
388
|
public abstract ELEMENT addExisting();
|
389
|
|
390
|
/**
|
391
|
* If <code>true</code> the section will also display
|
392
|
* a browse icon to choose from existing elements.
|
393
|
* <br>
|
394
|
* <b>Note:</b> when returning true you have to make sure
|
395
|
* to implement the {@link #addExisting()} method
|
396
|
* @return true if existing entities can be added;
|
397
|
* false otherwise
|
398
|
*/
|
399
|
public abstract boolean allowAddExisting();
|
400
|
|
401
|
/**
|
402
|
* Remove an element from the entities collection
|
403
|
*
|
404
|
* @param element a ELEMENT object.
|
405
|
*/
|
406
|
public abstract void removeElement(ELEMENT element);
|
407
|
|
408
|
/**
|
409
|
* String to display when the collection is empty
|
410
|
*
|
411
|
* @return a {@link java.lang.String} object.
|
412
|
*/
|
413
|
public abstract String getEmptyString();
|
414
|
|
415
|
/**
|
416
|
* <p>getTooltipString</p>
|
417
|
*
|
418
|
* @return String to display when hovering the add button
|
419
|
*/
|
420
|
protected abstract String getTooltipString();
|
421
|
}
|