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1
7
8 package java.awt;
9
10 import java.awt.peer.LightweightPeer;
11 import sun.awt.SunGraphicsCallback;
12
13
14 abstract class GraphicsCallback extends SunGraphicsCallback {
15
16 static final class PaintCallback extends GraphicsCallback  {
17 private static PaintCallback instance = new PaintCallback();
18
19 private PaintCallback() {}
20 public void run(Component comp, Graphics cg) {
21 comp.paint(cg);
22 }
23 static PaintCallback getInstance() {
24 return instance;
25 }
26 }
27 static final class PrintCallback extends GraphicsCallback {
28 private static PrintCallback instance = new PrintCallback();
29
30 private PrintCallback() {}
31 public void run(Component comp, Graphics cg) {
32 comp.print(cg);
33 }
34 static PrintCallback getInstance() {
35 return instance;
36 }
37 }
38 static final class PaintAllCallback extends GraphicsCallback {
39 private static PaintAllCallback instance = new PaintAllCallback();
40
41 private PaintAllCallback() {}
42 public void run(Component comp, Graphics cg) {
43 comp.paintAll(cg);
44 }
45 static PaintAllCallback getInstance() {
46 return instance;
47 }
48 }
49 static final class PrintAllCallback extends GraphicsCallback {
50 private static PrintAllCallback instance = new PrintAllCallback();
51
52 private PrintAllCallback() {}
53 public void run(Component comp, Graphics cg) {
54 comp.printAll(cg);
55 }
56 static PrintAllCallback getInstance() {
57 return instance;
58 }
59 }
60 static final class PeerPaintCallback extends GraphicsCallback {
61 private static PeerPaintCallback instance = new PeerPaintCallback();
62
63 private PeerPaintCallback() {}
64 public void run(Component comp, Graphics cg) {
65 comp.validate();
66 if (comp.peer instanceof LightweightPeer) {
67 comp.lightweightPaint(cg);
68 } else {
69 comp.peer.paint(cg);
70 }
71 }
72 static PeerPaintCallback getInstance() {
73 return instance;
74 }
75 }
76 static final class PeerPrintCallback extends GraphicsCallback {
77 private static PeerPrintCallback instance = new PeerPrintCallback();
78
79 private PeerPrintCallback() {}
80 public void run(Component comp, Graphics cg) {
81 comp.validate();
82 if (comp.peer instanceof LightweightPeer) {
83 comp.lightweightPrint(cg);
84 } else {
85 comp.peer.print(cg);
86 }
87 }
88 static PeerPrintCallback getInstance() {
89 return instance;
90 }
91 }
92 static final class PaintHeavyweightComponentsCallback
93 extends GraphicsCallback
94 {
95 private static PaintHeavyweightComponentsCallback instance =
96 new PaintHeavyweightComponentsCallback();
97
98 private PaintHeavyweightComponentsCallback() {}
99 public void run(Component comp, Graphics cg) {
100 if (comp.peer instanceof LightweightPeer) {
101 comp.paintHeavyweightComponents(cg);
102 } else {
103 comp.paintAll(cg);
104 }
105 }
106 static PaintHeavyweightComponentsCallback getInstance() {
107 return instance;
108 }
109 }
110 static final class PrintHeavyweightComponentsCallback
111 extends GraphicsCallback
112 {
113 private static PrintHeavyweightComponentsCallback instance =
114 new PrintHeavyweightComponentsCallback();
115
116 private PrintHeavyweightComponentsCallback() {}
117 public void run(Component comp, Graphics cg) {
118 if (comp.peer instanceof LightweightPeer) {
119 comp.printHeavyweightComponents(cg);
120 } else {
121 comp.printAll(cg);
122 }
123 }
124 static PrintHeavyweightComponentsCallback getInstance() {
125 return instance;
126 }
127 }
128 }
129 |
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