|
1
19
20
21 package org.netbeans.modules.form.fakepeer;
22
23 import java.awt.*;
24 import java.awt.peer.ButtonPeer;
25 import java.awt.peer.CanvasPeer;
26 import java.awt.peer.CheckboxPeer;
27 import java.awt.peer.ChoicePeer;
28 import java.awt.peer.ComponentPeer;
29 import java.awt.peer.ContainerPeer;
30 import java.awt.peer.LabelPeer;
31 import java.awt.peer.ListPeer;
32 import java.awt.peer.PanelPeer;
33 import java.awt.peer.ScrollPanePeer;
34 import java.awt.peer.ScrollbarPeer;
35 import java.awt.peer.TextAreaPeer;
36 import java.awt.peer.TextComponentPeer;
37 import java.awt.peer.TextFieldPeer;
38 import java.lang.reflect.*;
39
40
41
45
46 public class FakePeerSupport
47 {
48 private FakePeerSupport() {
49 }
50
51 public static boolean attachFakePeer(Component comp) {
52 if (comp == null || comp.isDisplayable()
53 || comp instanceof javax.swing.JComponent 
54 || comp instanceof javax.swing.RootPaneContainer )
55 return false;
56
57 FakePeer peer = null;
58
59 if (comp instanceof Label)
60 peer = getFakePeer(LabelPeer.class, new FakeLabelPeer((Label) comp));
61 else if (comp instanceof Button)
62 peer = getFakePeer(ButtonPeer.class, new FakeButtonPeer((Button) comp));
63 else if (comp instanceof Panel)
64 peer = getFakePeer(new Class [] {ContainerPeer.class, PanelPeer.class}, new FakePanelPeer((Panel) comp));
65 else if (comp instanceof TextField)
66 peer = getFakePeer(new Class [] {TextFieldPeer.class, TextComponentPeer.class}, new FakeTextFieldPeer((TextField) comp));
67 else if (comp instanceof TextArea)
68 peer = getFakePeer(new Class [] {TextAreaPeer.class, TextComponentPeer.class}, new FakeTextAreaPeer((TextArea) comp));
69 else if (comp instanceof TextComponent)
70 peer = getFakePeer(TextComponentPeer.class, new FakeTextComponentPeer((TextComponent) comp));
71 else if (comp instanceof Checkbox)
72 peer = getFakePeer(CheckboxPeer.class, new FakeCheckboxPeer((Checkbox) comp));
73 else if (comp instanceof Choice)
74 peer = getFakePeer(ChoicePeer.class, new FakeChoicePeer((Choice) comp));
75 else if (comp instanceof List)
76 peer = getFakePeer(ListPeer.class, new FakeListPeer((List) comp));
77 else if (comp instanceof Scrollbar)
78 peer = getFakePeer(ScrollbarPeer.class, new FakeScrollbarPeer((Scrollbar) comp));
79 else if (comp instanceof ScrollPane)
80 peer = getFakePeer(new Class [] {ContainerPeer.class, ScrollPanePeer.class}, new FakeScrollPanePeer((ScrollPane) comp));
81 else if (comp instanceof Canvas)
82 peer = getFakePeer(CanvasPeer.class, new FakeCanvasPeer((Canvas) comp));
83 else
84 return false;
85
86 attachFakePeer(comp, peer);
87 return true;
88 }
89
90 private static FakePeer getFakePeer(Class fakePeerInterfaces, FakeComponentPeer compPeer) {
91 return getFakePeer(new Class [] {fakePeerInterfaces}, compPeer);
92 }
93
94 private static FakePeer getFakePeer(Class [] fakePeerInterfaces, FakeComponentPeer compPeer) {
95
96 Class [] interfaces = new Class [fakePeerInterfaces.length + 2];
99 System.arraycopy(fakePeerInterfaces, 0, interfaces, 0, fakePeerInterfaces.length);
100 interfaces[fakePeerInterfaces.length] = FakePeer.class;
101 interfaces[fakePeerInterfaces.length+1] = java.awt.peer.LightweightPeer.class;
102
103 Class proxyClass = Proxy.getProxyClass(compPeer.getClass().getClassLoader(), interfaces);
104 FakePeerInvocationHandler handler = new FakePeerInvocationHandler(compPeer);
105 try {
106 return (FakePeer) proxyClass.getConstructor(new Class [] { InvocationHandler.class }).newInstance(new Object [] { handler });
107 } catch (Exception e) {
108 org.openide.ErrorManager.getDefault().notify(e);
109 }
110 return null;
111 }
112
113 public static void attachFakePeer(Component comp, ComponentPeer peer) {
114 try {
115 Field f = Component.class.getDeclaredField("peer"); f.setAccessible(true);
117 f.set(comp, peer);
118 }
119 catch (Exception ex) {
120 org.openide.ErrorManager.getDefault().notify(
121 org.openide.ErrorManager.INFORMATIONAL, ex);
122 }
123 }
124
125 public static void attachFakePeerRecursively(Container container) {
126 Component components[] = getComponents(container);
127 for (int i=0; i < components.length; i++) {
128 Component comp = components[i];
129 attachFakePeer(comp);
130 if (comp instanceof Container)
131 attachFakePeerRecursively((Container) comp);
132 }
133 }
134
135 static Component[] getComponents(Container container) {
136 try {
139 Field f = Container.class.getDeclaredField("component"); f.setAccessible(true);
141 return (Component[]) f.get(container);
142 }
143 catch (Exception ex) {
144 org.openide.ErrorManager.getDefault().notify(
145 org.openide.ErrorManager.INFORMATIONAL, ex);
146 }
147 return container.getComponents();
148 }
149
150 public static ComponentPeer detachFakePeer(Component comp) {
151 try {
152 Field f = Component.class.getDeclaredField("peer"); f.setAccessible(true);
154 Object peer = (ComponentPeer) f.get(comp);
155 if (peer instanceof FakePeer) {
156 f.set(comp, null);
157 return (FakePeer) peer;
158 }
159 }
160 catch (Exception ex) {
161 org.openide.ErrorManager.getDefault().notify(
162 org.openide.ErrorManager.INFORMATIONAL, ex);
163 }
164 return null;
165 }
166
167 public static Font getDefaultAWTFont() {
168 if (defaultFont == null) {
169 defaultFont = org.openide.windows.WindowManager.getDefault()
170 .getMainWindow().getFont();
171 if (defaultFont == null)
172 defaultFont = new Font("Dialog", Font.PLAIN, 12); }
174 return defaultFont;
175 }
176
177 private static Font defaultFont;
178 }
179 |
Popular Tags |
Java API By Example, From Geeks To Geeks.