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
|
/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal.gwt.client.ui.optiongroup;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.dom.client.LoadEvent;
import com.google.gwt.event.dom.client.LoadHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.FocusWidget;
import com.google.gwt.user.client.ui.Focusable;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RadioButton;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.terminal.gwt.client.ApplicationConnection;
import com.vaadin.terminal.gwt.client.EventId;
import com.vaadin.terminal.gwt.client.UIDL;
import com.vaadin.terminal.gwt.client.Util;
import com.vaadin.terminal.gwt.client.ui.Icon;
import com.vaadin.terminal.gwt.client.ui.checkbox.VCheckBox;
public class VOptionGroup extends VOptionGroupBase implements FocusHandler,
BlurHandler {
public static final String HTML_CONTENT_ALLOWED = "usehtml";
public static final String CLASSNAME = "v-select-optiongroup";
public static final String ATTRIBUTE_OPTION_DISABLED = "disabled";
protected final Panel panel;
private final Map<CheckBox, String> optionsToKeys;
protected boolean sendFocusEvents = false;
protected boolean sendBlurEvents = false;
protected List<HandlerRegistration> focusHandlers = null;
protected List<HandlerRegistration> blurHandlers = null;
private final LoadHandler iconLoadHandler = new LoadHandler() {
public void onLoad(LoadEvent event) {
Util.notifyParentOfSizeChange(VOptionGroup.this, true);
}
};
/**
* used to check whether a blur really was a blur of the complete
* optiongroup: if a control inside this optiongroup gains focus right after
* blur of another control inside this optiongroup (meaning: if onFocus
* fires after onBlur has fired), the blur and focus won't be sent to the
* server side as only a focus change inside this optiongroup occured
*/
private boolean blurOccured = false;
protected boolean htmlContentAllowed = false;
public VOptionGroup() {
super(CLASSNAME);
panel = (Panel) optionsContainer;
optionsToKeys = new HashMap<CheckBox, String>();
}
/*
* Return true if no elements were changed, false otherwise.
*/
@Override
protected void buildOptions(UIDL uidl) {
panel.clear();
for (final Iterator<?> it = uidl.getChildIterator(); it.hasNext();) {
final UIDL opUidl = (UIDL) it.next();
CheckBox op;
String itemHtml = opUidl.getStringAttribute("caption");
if (!htmlContentAllowed) {
itemHtml = Util.escapeHTML(itemHtml);
}
String icon = opUidl.getStringAttribute("icon");
if (icon != null && icon.length() != 0) {
String iconUrl = client.translateVaadinUri(icon);
itemHtml = "<img src=\"" + iconUrl + "\" class=\""
+ Icon.CLASSNAME + "\" alt=\"\" />" + itemHtml;
}
if (isMultiselect()) {
op = new VCheckBox();
op.setHTML(itemHtml);
} else {
op = new RadioButton(paintableId, itemHtml, true);
op.setStyleName("v-radiobutton");
}
if (icon != null && icon.length() != 0) {
Util.sinkOnloadForImages(op.getElement());
op.addHandler(iconLoadHandler, LoadEvent.getType());
}
op.addStyleName(CLASSNAME_OPTION);
op.setValue(opUidl.getBooleanAttribute("selected"));
boolean enabled = !opUidl
.getBooleanAttribute(ATTRIBUTE_OPTION_DISABLED)
&& !isReadonly() && !isDisabled();
op.setEnabled(enabled);
setStyleName(op.getElement(),
ApplicationConnection.DISABLED_CLASSNAME, !enabled);
op.addClickHandler(this);
optionsToKeys.put(op, opUidl.getStringAttribute("key"));
panel.add(op);
}
}
@Override
protected String[] getSelectedItems() {
return selectedKeys.toArray(new String[selectedKeys.size()]);
}
@Override
public void onClick(ClickEvent event) {
super.onClick(event);
if (event.getSource() instanceof CheckBox) {
final boolean selected = ((CheckBox) event.getSource()).getValue();
final String key = optionsToKeys.get(event.getSource());
if (!isMultiselect()) {
selectedKeys.clear();
}
if (selected) {
selectedKeys.add(key);
} else {
selectedKeys.remove(key);
}
client.updateVariable(paintableId, "selected", getSelectedItems(),
isImmediate());
}
}
@Override
protected void setTabIndex(int tabIndex) {
for (Iterator<Widget> iterator = panel.iterator(); iterator.hasNext();) {
FocusWidget widget = (FocusWidget) iterator.next();
widget.setTabIndex(tabIndex);
}
}
public void focus() {
Iterator<Widget> iterator = panel.iterator();
if (iterator.hasNext()) {
((Focusable) iterator.next()).setFocus(true);
}
}
public void onFocus(FocusEvent arg0) {
if (!blurOccured) {
// no blur occured before this focus event
// panel was blurred => fire the event to the server side if
// requested by server side
if (sendFocusEvents) {
client.updateVariable(paintableId, EventId.FOCUS, "", true);
}
} else {
// blur occured before this focus event
// another control inside the panel (checkbox / radio box) was
// blurred => do not fire the focus and set blurOccured to false, so
// blur will not be fired, too
blurOccured = false;
}
}
public void onBlur(BlurEvent arg0) {
blurOccured = true;
if (sendBlurEvents) {
Scheduler.get().scheduleDeferred(new Command() {
public void execute() {
// check whether blurOccured still is true and then send the
// event out to the server
if (blurOccured) {
client.updateVariable(paintableId, EventId.BLUR, "",
true);
blurOccured = false;
}
}
});
}
}
}
|
