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
|
/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.examples.layoutexample;
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
class FillLayoutTab extends Tab {
/* Controls for setting layout parameters */
Button horizontal, vertical;
/* The example layout instance */
FillLayout fillLayout;
/* TableEditors and related controls*/
TableEditor comboEditor;
CCombo combo;
/**
* Creates the Tab within a given instance of LayoutExample.
*/
FillLayoutTab(LayoutExample instance) {
super(instance);
}
/**
* Creates the widgets in the "child" group.
*/
void createChildWidgets () {
/* Add common controls */
super.createChildWidgets ();
/* Add TableEditors */
comboEditor = new TableEditor (table);
table.addSelectionListener (new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
resetEditors ();
index = table.getSelectionIndex ();
if (index == -1) return;
TableItem oldItem = comboEditor.getItem ();
newItem = table.getItem (index);
if (newItem == oldItem || newItem != lastSelected) {
lastSelected = newItem;
return;
}
table.showSelection ();
combo = new CCombo (table, SWT.READ_ONLY);
createComboEditor (combo, comboEditor);
}
});
/* Add listener to add an element to the table */
add.addSelectionListener(new SelectionAdapter () {
public void widgetSelected(SelectionEvent e) {
TableItem item = new TableItem (table, 0);
item.setText (0, String.valueOf (table.indexOf (item)));
item.setText (1, "Button");
data.addElement ("Button");
resetEditors ();
}
});
}
/**
* Creates the control widgets.
*/
void createControlWidgets () {
/* Controls the type of FillLayout */
Group typeGroup = new Group (controlGroup, SWT.NONE);
typeGroup.setText (LayoutExample.getResourceString ("Type"));
typeGroup.setLayout (new GridLayout ());
typeGroup.setLayoutData (new GridData (GridData.FILL_HORIZONTAL));
horizontal = new Button (typeGroup, SWT.RADIO);
horizontal.setText ("SWT.HORIZONTAL");
horizontal.setLayoutData(new GridData (GridData.FILL_HORIZONTAL));
horizontal.setSelection(true);
horizontal.addSelectionListener (selectionListener);
vertical = new Button (typeGroup, SWT.RADIO);
vertical.setText ("SWT.VERTICAL");
vertical.setLayoutData(new GridData (GridData.FILL_HORIZONTAL));
vertical.addSelectionListener (selectionListener);
/* Add common controls */
super.createControlWidgets ();
/* Position the sash */
sash.setWeights (new int [] {4,1});
}
/**
* Creates the example layout.
*/
void createLayout () {
fillLayout = new FillLayout ();
layoutComposite.setLayout (fillLayout);
}
/**
* Disposes the editors without placing their contents
* into the table.
*/
void disposeEditors () {
comboEditor.setEditor (null, null, -1);
combo.dispose ();
}
/**
* Generates code for the example layout.
*/
StringBuffer generateLayoutCode () {
StringBuffer code = new StringBuffer ();
code.append ("\t\tFillLayout fillLayout = new FillLayout ();\n");
if (fillLayout.type == SWT.VERTICAL) {
code.append ("\t\tfillLayout.type = SWT.VERTICAL;\n");
}
code.append ("\t\tshell.setLayout (fillLayout);\n");
for (int i = 0; i < children.length; i++) {
Control control = children [i];
code.append (getChildCode (control, i));
}
return code;
}
/**
* Returns the layout data field names.
*/
String [] getLayoutDataFieldNames() {
return new String [] {"","Control"};
}
/**
* Gets the text for the tab folder item.
*/
String getTabText () {
return "FillLayout";
}
/**
* Takes information from TableEditors and stores it.
*/
void resetEditors () {
TableItem oldItem = comboEditor.getItem ();
comboEditor.setEditor (null, null, -1);
if (oldItem != null) {
int row = table.indexOf (oldItem);
data.insertElementAt (combo.getText (), row);
oldItem.setText (1, data.elementAt (row).toString ());
combo.dispose ();
}
setLayoutState ();
refreshLayoutComposite ();
layoutComposite.layout (true);
layoutGroup.layout (true);
}
/**
* Sets the state of the layout.
*/
void setLayoutState () {
if (vertical.getSelection()) {
fillLayout.type = SWT.VERTICAL;
} else {
fillLayout.type = SWT.HORIZONTAL;
}
}
}
|
