1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
package com.vaadin.tests.dd;
import java.util.Collection;
import com.vaadin.data.Item;
import com.vaadin.data.util.HierarchicalContainer;
import com.vaadin.event.DataBoundTransferable;
import com.vaadin.event.Transferable;
import com.vaadin.event.dd.DragAndDropEvent;
import com.vaadin.event.dd.DropHandler;
import com.vaadin.event.dd.acceptcriteria.AcceptCriterion;
import com.vaadin.event.dd.acceptcriteria.ServerSideCriterion;
import com.vaadin.server.ExternalResource;
import com.vaadin.shared.ui.dd.VerticalDropLocation;
import com.vaadin.tests.components.TestBase;
import com.vaadin.ui.AbstractSelect.AcceptItem;
import com.vaadin.ui.Component;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Layout;
import com.vaadin.ui.Link;
import com.vaadin.ui.Table;
import com.vaadin.ui.Table.TableDragMode;
import com.vaadin.ui.Tree;
import com.vaadin.ui.Tree.TreeDragMode;
import com.vaadin.ui.Tree.TreeTargetDetails;
/**
* DD playground. Better quality example/prototype codes in {@link DDTest2}.
*/
public class DDTest1 extends TestBase {
@Override
protected void setup() {
GridLayout gl = new GridLayout(3, 2);
gl.setSizeFull();
gl.setSpacing(true);
Layout main = gl;
DragDropPane pane1 = new DragDropPane();
pane1.setSizeFull();
pane1.setCaption("Pane1");
Label label = new Label("Foo");
label.setSizeUndefined();
pane1.addComponent(label);
Link l = new Link("This is link", new ExternalResource(
"http://www.google.com/"));
pane1.addComponent(l, "top:100px; left: 20px;");
label = new Label("Bar");
label.setSizeUndefined();
pane1.addComponent(label);
DragDropPane pane2 = new DragDropPane();
pane2.setCaption("Pane2 (accept needs server side visit, check for \"Bar\")");
final AcceptCriterion crit = new ServerSideCriterion() {
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public boolean accept(DragAndDropEvent dragEvent) {
Transferable transferable = dragEvent.getTransferable();
// System.out.println("Simulating 500ms processing...");
// try {
// Thread.sleep(200);
// } catch (InterruptedException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
// System.out.println("Done get to work.");
Component component = (Component) transferable
.getData("component");
if (component == null) {
component = transferable.getSourceComponent();
}
if (component != null) {
if (component.toString() != null
&& component.toString().contains("Bar")) {
return true;
}
}
return false;
}
};
pane2.setAcceptCriterion(crit);
pane2.setId("pane2");
pane2.setSizeFull();
DragDropPane pane3 = new DragDropPane();
pane3.setSizeFull();
pane3.setCaption("Pane3");
final Tree t = new Tree(
"Tree with sorting enabled. Also allows dragging elsewhere.");
final HierarchicalContainer idx = new HierarchicalContainer();
t.setContainerDataSource(idx);
t.setId("perseys");
t.addItem("Foo");
t.addItem("Bar");
t.addItem("Bar1");
t.addItem("Bar2");
t.addItem("Bar3");
t.addItem("Bar4");
t.addItem("Bar5");
t.addItem("Child");
t.setParent("Child", "Foo");
t.setSizeFull();
t.setDragMode(TreeDragMode.NODE);
/*
* Moves items in tree (and could work in Table too). Also supports
* "building" tree.
*
* TODO fix algorithm, broken in some cases.
*/
DropHandler itemSorter = new DropHandler() {
@SuppressWarnings("unused")
private void populateSubTree(HierarchicalContainer idx,
HierarchicalContainer subtree, Object itemId) {
Collection<?> children = subtree.getChildren(itemId);
if (children != null) {
for (Object childId : children) {
Item addItem = idx.addItem(childId);
if (addItem != null) {
// did not exist, populate properties
Item item = subtree.getItem(itemId);
Collection<?> itemPropertyIds = item
.getItemPropertyIds();
for (Object propId : itemPropertyIds) {
addItem.getItemProperty(propId)
.setValue(
item.getItemProperty(propId)
.getValue());
}
}
idx.setParent(childId, itemId);
populateSubTree(idx, subtree, childId);
}
}
}
@SuppressWarnings("unused")
private HierarchicalContainer getSubTree(HierarchicalContainer idx,
Object itemId) {
HierarchicalContainer hierarchicalContainer = new HierarchicalContainer();
Collection<?> containerPropertyIds = idx
.getContainerPropertyIds();
for (Object object : containerPropertyIds) {
hierarchicalContainer.addContainerProperty(object,
idx.getType(object), null);
}
hierarchicalContainer.addItem(itemId);
copyChildren(idx, hierarchicalContainer, itemId);
return hierarchicalContainer;
}
private void copyChildren(HierarchicalContainer source,
HierarchicalContainer target, Object itemId) {
Collection<?> children = source.getChildren(itemId);
if (children != null) {
for (Object childId : children) {
Item item = source.getItem(childId);
Item addedItem = target.addItem(childId);
target.setParent(childId, itemId);
Collection<?> itemPropertyIds = item
.getItemPropertyIds();
for (Object propertyId : itemPropertyIds) {
addedItem.getItemProperty(propertyId)
.setValue(
item.getItemProperty(propertyId)
.getValue());
}
copyChildren(source, target, childId);
}
}
}
@Override
public void drop(DragAndDropEvent event) {
TreeTargetDetails details = (TreeTargetDetails) event
.getTargetDetails();
// TODO set properties, so same sorter could be used in Table
Transferable transferable = event.getTransferable();
if (transferable instanceof DataBoundTransferable) {
DataBoundTransferable transferrable2 = (DataBoundTransferable) transferable;
Object itemId = transferrable2.getItemId();
Object itemIdOver = details.getItemIdOver();
// TODO could use the "folder" node id to make the drop
// logic simpler
Object itemIdInto = details.getItemIdInto();
VerticalDropLocation dropLocation = details
.getDropLocation();
Object itemIdAfter = details.getItemIdAfter();
if (itemIdOver.equals(itemIdInto)) { // directly on a node
t.setParent(itemId, itemIdOver);
return;
}
idx.setParent(itemId, itemIdInto);
if (dropLocation == null) {
System.err.println("No detail of drop place available");
}
idx.moveAfterSibling(itemId, itemIdAfter);
}
return;
}
@Override
public AcceptCriterion getAcceptCriterion() {
// TODO should actually check that source is same as target
return AcceptItem.ALL;
}
};
t.setDropHandler(itemSorter);
Table ta = new Table("Test table");
ta.setContainerDataSource(idx);
ta.addContainerProperty("Foos", String.class, "Foo");
ta.addContainerProperty("Bars", String.class, "Bar");
ta.setRowHeaderMode(Table.ROW_HEADER_MODE_ID);
ta.setSizeFull();
ta.setDragMode(TableDragMode.ROW);
main.addComponent(pane1);
main.addComponent(pane2);
main.addComponent(pane3);
main.addComponent(t);
main.addComponent(ta);
main.addComponent(new Link("Foo", new ExternalResource(
"http://www.itmill.com/")));
getLayout().setSizeFull();
addComponent(main);
}
@Override
protected String getDescription() {
return "Random DD tests";
}
@Override
protected Integer getTicketNumber() {
return 119;
}
}
|
