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1 package org.enhydra.dods.wizard;
2
3 import java.awt.Component  ;
4 import java.awt.Container ;
5 import java.awt.Dimension ;
6 import java.awt.Insets ;
7 import java.awt.LayoutManager2 ;
8 import java.awt.Rectangle ;
9 import java.io.Serializable ;
10 import java.util.Hashtable ;
11
12 public class XYLayout
13 implements LayoutManager2 , Serializable {
14 private static final long serialVersionUID = 200L;
15 int width;
16 int height;
17 Hashtable info;
18 static final XYConstraints defaultConstraints = new XYConstraints();
19 public XYLayout() {
20 info = new Hashtable ();
21 }
22
23 public XYLayout(int width, int height) {
24 info = new Hashtable ();
25 this.width = width;
26 this.height = height;
27 }
28
29 public int getWidth() {
30 return width;
31 }
32
33 public void setWidth(int width) {
34 this.width = width;
35 }
36
37 public int getHeight() {
38 return height;
39 }
40
41 public void setHeight(int height) {
42 this.height = height;
43 }
44
45 public String toString() {
46 return String.valueOf(String.valueOf((new StringBuffer ("XYLayout[width=")).append(width).append(",height=").append(height).append("]")));
47 }
48
49 public void addLayoutComponent(String s, Component component1) {}
50
51 public void removeLayoutComponent(Component component) {
52 info.remove(component);
53 }
54
55 public Dimension preferredLayoutSize(Container target) {
56 return getLayoutSize(target, true);
57 }
58
59 public Dimension minimumLayoutSize(Container target) {
60 return getLayoutSize(target, false);
61 }
62
63 public void layoutContainer(Container target) {
64 Insets insets = target.getInsets();
65 int count = target.getComponentCount();
66
67 for (int i = 0; i < count; i++) {
68 Component component = target.getComponent(i);
69
70 if (component.isVisible()) {
71 Rectangle r = getComponentBounds(component, true);
72
73 component.setBounds(insets.left + r.x, insets.top + r.y, r.width,
74 r.height);
75 }
76 }
77 }
78
79 public void addLayoutComponent(Component component, Object constraints) {
80 if (constraints instanceof XYConstraints) {
81 info.put(component, constraints);
82 }
83 }
84
85 public Dimension maximumLayoutSize(Container target) {
86 return new Dimension (0x7fffffff, 0x7fffffff);
87 }
88
89 public float getLayoutAlignmentX(Container target) {
90 return 0.5F;
91 }
92
93 public float getLayoutAlignmentY(Container target) {
94 return 0.5F;
95 }
96
97 public void invalidateLayout(Container container) {}
98
99 Rectangle getComponentBounds(Component component, boolean doPreferred) {
100 XYConstraints constraints = (XYConstraints) info.get(component);
101
102 if (constraints == null) {
103 constraints = defaultConstraints;
104 }
105 Rectangle r = new Rectangle (constraints.x, constraints.y,
106 constraints.width, constraints.height);
107
108 if (r.width <= 0 || r.height <= 0) {
109 Dimension d = doPreferred
110 ? component.getPreferredSize()
111 : component.getMinimumSize();
112
113 if (r.width <= 0) {
114 r.width = d.width;
115 }
116 if (r.height <= 0) {
117 r.height = d.height;
118 }
119 }
120 return r;
121 }
122
123 Dimension getLayoutSize(Container target, boolean doPreferred) {
124 Dimension dim = new Dimension (0, 0);
125
126 if (width <= 0 || height <= 0) {
127 int count = target.getComponentCount();
128
129 for (int i = 0; i < count; i++) {
130 Component component = target.getComponent(i);
131
132 if (component.isVisible()) {
133 Rectangle r = getComponentBounds(component, doPreferred);
134
135 dim.width = Math.max(dim.width, r.x + r.width);
136 dim.height = Math.max(dim.height, r.y + r.height);
137 }
138 }
139 }
140 if (width > 0) {
141 dim.width = width;
142 }
143 if (height > 0) {
144 dim.height = height;
145 }
146 Insets insets = target.getInsets();
147
148 dim.width += insets.left + insets.right;
149 dim.height += insets.top + insets.bottom;
150 return dim;
151 }
152 }
153 |
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