|
1
|
/**
|
|
2
|
* Copyright (C) 2018 EDIT
|
|
3
|
* European Distributed Institute of Taxonomy
|
|
4
|
* http://www.e-taxonomy.eu
|
|
5
|
*
|
|
6
|
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
|
7
|
* See LICENSE.TXT at the top of this package for the full license terms.
|
|
8
|
*/
|
|
9
|
package eu.etaxonomy.taxeditor.preference.wizard;
|
|
10
|
|
|
11
|
import java.util.Arrays;
|
|
12
|
import java.util.List;
|
|
13
|
|
|
14
|
import org.eclipse.jface.resource.JFaceResources;
|
|
15
|
import org.eclipse.jface.viewers.AbstractTreeViewer;
|
|
16
|
import org.eclipse.jface.viewers.CheckboxTreeViewer;
|
|
17
|
import org.eclipse.jface.viewers.IBaseLabelProvider;
|
|
18
|
import org.eclipse.jface.viewers.ITreeContentProvider;
|
|
19
|
import org.eclipse.jface.viewers.ITreeSelection;
|
|
20
|
import org.eclipse.swt.SWT;
|
|
21
|
import org.eclipse.swt.events.SelectionEvent;
|
|
22
|
import org.eclipse.swt.events.SelectionListener;
|
|
23
|
import org.eclipse.swt.graphics.Font;
|
|
24
|
import org.eclipse.swt.layout.GridData;
|
|
25
|
import org.eclipse.swt.layout.GridLayout;
|
|
26
|
import org.eclipse.swt.widgets.Button;
|
|
27
|
import org.eclipse.swt.widgets.Composite;
|
|
28
|
import org.eclipse.swt.widgets.Tree;
|
|
29
|
import org.eclipse.swt.widgets.TreeItem;
|
|
30
|
import org.eclipse.swt.widgets.Widget;
|
|
31
|
|
|
32
|
import eu.etaxonomy.taxeditor.l10n.Messages;
|
|
33
|
import eu.etaxonomy.taxeditor.model.ImageResources;
|
|
34
|
|
|
35
|
/**
|
|
36
|
* @author pplitzner
|
|
37
|
* @since Oct 26, 2018
|
|
38
|
*
|
|
39
|
*/
|
|
40
|
public class CheckBoxTreeComposite extends Composite implements SelectionListener {
|
|
41
|
|
|
42
|
private static final Font FONT_DEFAULT = JFaceResources.getFontRegistry().get(JFaceResources.DEFAULT_FONT);
|
|
43
|
private static final Font FONT_ITALIC = JFaceResources.getFontRegistry().getItalic(JFaceResources.DEFAULT_FONT);
|
|
44
|
private static final Font FONT_BOLD = JFaceResources.getFontRegistry().getBold(JFaceResources.DEFAULT_FONT);
|
|
45
|
private CheckboxTreeViewer viewer;
|
|
46
|
private Button btnCollapse;
|
|
47
|
private Button btnExpand;
|
|
48
|
private Button btnSelectAllChildren;
|
|
49
|
private Button btnSelectDirectChildren;
|
|
50
|
|
|
51
|
private boolean allowTopLevelSelection = false;
|
|
52
|
|
|
53
|
public CheckBoxTreeComposite(Composite parent, ITreeContentProvider contentProvider, IBaseLabelProvider labelProvider, int style) {
|
|
54
|
super(parent, style);
|
|
55
|
GridLayout layout = new GridLayout();
|
|
56
|
layout.marginHeight = 0;
|
|
57
|
setLayout(layout);
|
|
58
|
|
|
59
|
Composite toolbar = new Composite(this, SWT.NONE);
|
|
60
|
toolbar.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false, 1, 1));
|
|
61
|
GridLayout gl_toolbar = new GridLayout(4, false);
|
|
62
|
gl_toolbar.horizontalSpacing = 4;
|
|
63
|
gl_toolbar.marginHeight = 0;
|
|
64
|
gl_toolbar.verticalSpacing = 0;
|
|
65
|
toolbar.setLayout(gl_toolbar);
|
|
66
|
|
|
67
|
btnCollapse = new Button(toolbar, SWT.NONE);
|
|
68
|
btnCollapse.addSelectionListener(this);
|
|
69
|
btnCollapse.setImage(ImageResources.getImage(ImageResources.COLLAPSE_ALL));
|
|
70
|
btnCollapse.setToolTipText(""); //$NON-NLS-1$
|
|
71
|
|
|
72
|
btnExpand = new Button(toolbar, SWT.NONE);
|
|
73
|
btnExpand.addSelectionListener(this);
|
|
74
|
btnExpand.setImage(ImageResources.getImage(ImageResources.EXPAND));
|
|
75
|
btnExpand.setToolTipText(""); //$NON-NLS-1$
|
|
76
|
|
|
77
|
btnSelectDirectChildren = new Button(toolbar, SWT.NONE);
|
|
78
|
btnSelectDirectChildren.addSelectionListener(this);
|
|
79
|
btnSelectDirectChildren.setImage(ImageResources.getImage(ImageResources.FLAT));
|
|
80
|
btnSelectDirectChildren.setToolTipText(Messages.CheckBoxTreeComposite_SELECT_DIRECT_CHILDREN);
|
|
81
|
|
|
82
|
btnSelectAllChildren = new Button(toolbar, SWT.NONE);
|
|
83
|
btnSelectAllChildren.addSelectionListener(this);
|
|
84
|
btnSelectAllChildren.setImage(ImageResources.getImage(ImageResources.HIERARCHICAL));
|
|
85
|
btnSelectAllChildren.setToolTipText(""); //$NON-NLS-1$
|
|
86
|
|
|
87
|
Tree tree = new Tree(this, SWT.BORDER | SWT.CHECK);
|
|
88
|
tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
|
|
89
|
tree.addListener(SWT.Selection, event -> {
|
|
90
|
if (event.detail == SWT.CHECK) {
|
|
91
|
TreeItem item = (TreeItem) event.item;
|
|
92
|
if(!allowTopLevelSelection && item.getParentItem()==null){
|
|
93
|
// top level selection not allowed
|
|
94
|
item.setChecked(false);
|
|
95
|
return;
|
|
96
|
}
|
|
97
|
updateItem(item);
|
|
98
|
}
|
|
99
|
});
|
|
100
|
|
|
101
|
viewer = new CheckboxTreeViewer(tree);
|
|
102
|
viewer.setContentProvider(contentProvider);
|
|
103
|
viewer.setLabelProvider(labelProvider);
|
|
104
|
}
|
|
105
|
|
|
106
|
|
|
107
|
private void updateItem(TreeItem treeItem){
|
|
108
|
TreeItem parentItem = treeItem.getParentItem();
|
|
109
|
if(parentItem!=null){
|
|
110
|
updateItem(parentItem);
|
|
111
|
}
|
|
112
|
else{
|
|
113
|
updateChildItems(treeItem);
|
|
114
|
}
|
|
115
|
}
|
|
116
|
|
|
117
|
private void updateChildItems(TreeItem treeItem){
|
|
118
|
treeItem.setFont(FONT_DEFAULT);
|
|
119
|
TreeItem[] children = treeItem.getItems();
|
|
120
|
if(children.length==0){
|
|
121
|
return;
|
|
122
|
}
|
|
123
|
int checkedCount = 0;
|
|
124
|
for (TreeItem child : children) {
|
|
125
|
updateChildItems(child);
|
|
126
|
if(child.getChecked()){
|
|
127
|
if ((child.getFont().equals(FONT_BOLD)) || (child.getItems().length == 0)) {
|
|
128
|
checkedCount++;
|
|
129
|
}
|
|
130
|
//some children are checked
|
|
131
|
treeItem.setFont(FONT_ITALIC);
|
|
132
|
}
|
|
133
|
else if(child.getFont().equals(FONT_ITALIC)
|
|
134
|
|| child.getFont().equals(FONT_BOLD)){
|
|
135
|
//some children are checked
|
|
136
|
treeItem.setFont(FONT_ITALIC);
|
|
137
|
}
|
|
138
|
}
|
|
139
|
if(checkedCount==children.length){
|
|
140
|
//all children are checked
|
|
141
|
treeItem.setFont(FONT_BOLD);
|
|
142
|
}
|
|
143
|
else if(!treeItem.getFont().equals(FONT_ITALIC)){
|
|
144
|
if(checkedCount>0){
|
|
145
|
//some children are checked
|
|
146
|
treeItem.setFont(FONT_ITALIC);
|
|
147
|
}
|
|
148
|
else{
|
|
149
|
//no children are checked
|
|
150
|
treeItem.setFont(FONT_DEFAULT);
|
|
151
|
}
|
|
152
|
}
|
|
153
|
}
|
|
154
|
|
|
155
|
|
|
156
|
public CheckboxTreeViewer getViewer() {
|
|
157
|
return viewer;
|
|
158
|
}
|
|
159
|
|
|
160
|
public void setAllowTopLevelSelection(boolean allowTopLevelSelection) {
|
|
161
|
this.allowTopLevelSelection = allowTopLevelSelection;
|
|
162
|
}
|
|
163
|
|
|
164
|
/**
|
|
165
|
* Checks the tree items corresponding to the given elements.<br>
|
|
166
|
* @param elements
|
|
167
|
*/
|
|
168
|
public void setCheckedElements(Object[] elements) {
|
|
169
|
viewer.setCheckedElements(elements);
|
|
170
|
for (Object element: elements) {
|
|
171
|
viewer.reveal(element);
|
|
172
|
}
|
|
173
|
TreeItem[] rootItems = viewer.getTree().getItems();
|
|
174
|
for (TreeItem rootItem : rootItems) {
|
|
175
|
updateItem(rootItem);
|
|
176
|
}
|
|
177
|
|
|
178
|
}
|
|
179
|
|
|
180
|
/**
|
|
181
|
* Grays the tree items corresponding to the given elements.<br>
|
|
182
|
* @param elements
|
|
183
|
*/
|
|
184
|
public void setGrayedElements(Object[] elements) {
|
|
185
|
viewer.setGrayedElements(elements);
|
|
186
|
for (Object element: elements) {
|
|
187
|
viewer.reveal(element);
|
|
188
|
}
|
|
189
|
TreeItem[] rootItems = viewer.getTree().getItems();
|
|
190
|
for (TreeItem rootItem : rootItems) {
|
|
191
|
updateItem(rootItem);
|
|
192
|
}
|
|
193
|
|
|
194
|
}
|
|
195
|
|
|
196
|
@Override
|
|
197
|
public void widgetSelected(SelectionEvent e) {
|
|
198
|
ITreeSelection structuredSelection = viewer.getStructuredSelection();
|
|
199
|
Object firstElement = structuredSelection.getFirstElement();
|
|
200
|
if(e.widget == btnCollapse){
|
|
201
|
viewer.collapseAll();
|
|
202
|
}
|
|
203
|
else if(e.widget == btnExpand){
|
|
204
|
viewer.expandToLevel(firstElement, AbstractTreeViewer.ALL_LEVELS);
|
|
205
|
}
|
|
206
|
else if(e.widget == btnSelectDirectChildren){
|
|
207
|
Widget item = viewer.testFindItem(firstElement);
|
|
208
|
if(item instanceof TreeItem){
|
|
209
|
viewer.expandToLevel(firstElement, 1);
|
|
210
|
TreeItem treeItem = (TreeItem) item;
|
|
211
|
TreeItem[] childItems = treeItem.getItems();
|
|
212
|
List<TreeItem> childItemList = Arrays.asList(childItems);
|
|
213
|
boolean allChecked = childItemList.stream().allMatch(childItem->childItem.getChecked());
|
|
214
|
childItemList.stream().forEach(childItem->childItem.setChecked(!allChecked));
|
|
215
|
TreeItem parent = getRoot(treeItem);
|
|
216
|
updateItem(parent);
|
|
217
|
}
|
|
218
|
}
|
|
219
|
else if(e.widget == btnSelectAllChildren){
|
|
220
|
Widget item = viewer.testFindItem(firstElement);
|
|
221
|
if(item instanceof TreeItem){
|
|
222
|
viewer.expandToLevel(firstElement, AbstractTreeViewer.ALL_LEVELS);
|
|
223
|
viewer.setSubtreeChecked(firstElement, !((TreeItem) item).getFont().equals(FONT_BOLD));
|
|
224
|
TreeItem parent = getRoot((TreeItem) item);
|
|
225
|
updateItem(parent);
|
|
226
|
((TreeItem) item).setChecked(false);
|
|
227
|
}
|
|
228
|
}
|
|
229
|
}
|
|
230
|
|
|
231
|
private TreeItem getRoot(TreeItem treeItem) {
|
|
232
|
TreeItem parent = treeItem;
|
|
233
|
while(parent.getParentItem()!=null){
|
|
234
|
parent = parent.getParentItem();
|
|
235
|
}
|
|
236
|
return parent;
|
|
237
|
}
|
|
238
|
|
|
239
|
@Override
|
|
240
|
public void widgetDefaultSelected(SelectionEvent e) {
|
|
241
|
}
|
|
242
|
|
|
243
|
}
|