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
|
/*
* Copyright 2011 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.event;
import java.io.Serializable;
import java.lang.reflect.Method;
import com.vaadin.event.MouseEvents.ClickEvent;
import com.vaadin.shared.Connector;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.ui.Component;
import com.vaadin.ui.ComponentContainer;
import com.vaadin.util.ReflectTools;
public interface LayoutEvents {
public interface LayoutClickListener extends ComponentEventListener {
public static final Method clickMethod = ReflectTools.findMethod(
LayoutClickListener.class, "layoutClick",
LayoutClickEvent.class);
/**
* Layout has been clicked
*
* @param event
* Component click event.
*/
public void layoutClick(LayoutClickEvent event);
}
/**
* The interface for adding and removing <code>LayoutClickEvent</code>
* listeners. By implementing this interface a class explicitly announces
* that it will generate a <code>LayoutClickEvent</code> when a component
* inside it is clicked and a <code>LayoutClickListener</code> is
* registered.
* <p>
* Note: The general Java convention is not to explicitly declare that a
* class generates events, but to directly define the
* <code>addListener</code> and <code>removeListener</code> methods. That
* way the caller of these methods has no real way of finding out if the
* class really will send the events, or if it just defines the methods to
* be able to implement an interface.
* </p>
*
* @since 6.5.2
* @see LayoutClickListener
* @see LayoutClickEvent
*/
public interface LayoutClickNotifier extends Serializable {
/**
* Add a click listener to the layout. The listener is called whenever
* the user clicks inside the layout. An event is also triggered when
* the click targets a component inside a nested layout or Panel,
* provided the targeted component does not prevent the click event from
* propagating. A caption is not considered part of a component.
*
* The child component that was clicked is included in the
* {@link LayoutClickEvent}.
*
* Use {@link #removeListener(LayoutClickListener)} to remove the
* listener.
*
* @param listener
* The listener to add
*/
public void addLayoutClickListener(LayoutClickListener listener);
/**
* @deprecated Since 7.0, replaced by
* {@link #addLayoutClickListener(LayoutClickListener)}
**/
@Deprecated
public void addListener(LayoutClickListener listener);
/**
* Removes an LayoutClickListener.
*
* @param listener
* LayoutClickListener to be removed
*/
public void removeLayoutClickListener(LayoutClickListener listener);
/**
* @deprecated Since 7.0, replaced by
* {@link #removeLayoutClickListener(LayoutClickListener)}
**/
@Deprecated
public void removeListener(LayoutClickListener listener);
}
/**
* An event fired when the layout has been clicked. The event contains
* information about the target layout (component) and the child component
* that was clicked. If no child component was found it is set to null.
*/
public static class LayoutClickEvent extends ClickEvent {
private final Component clickedComponent;
private final Component childComponent;
public LayoutClickEvent(Component source,
MouseEventDetails mouseEventDetails,
Component clickedComponent, Component childComponent) {
super(source, mouseEventDetails);
this.clickedComponent = clickedComponent;
this.childComponent = childComponent;
}
/**
* Returns the component that was clicked, which is somewhere inside the
* parent layout on which the listener was registered.
*
* For the direct child component of the layout, see
* {@link #getChildComponent()}.
*
* @return clicked {@link Component}, null if none found
*/
public Component getClickedComponent() {
return clickedComponent;
}
/**
* Returns the direct child component of the layout which contains the
* clicked component.
*
* For the clicked component inside that child component of the layout,
* see {@link #getClickedComponent()}.
*
* @return direct child {@link Component} of the layout which contains
* the clicked Component, null if none found
*/
public Component getChildComponent() {
return childComponent;
}
public static LayoutClickEvent createEvent(ComponentContainer layout,
MouseEventDetails mouseDetails, Connector clickedConnector) {
Component clickedComponent = (Component) clickedConnector;
Component childComponent = clickedComponent;
while (childComponent != null
&& childComponent.getParent() != layout) {
childComponent = childComponent.getParent();
}
return new LayoutClickEvent(layout, mouseDetails, clickedComponent,
childComponent);
}
}
}
|
