55 * destroy() methods.
56 *
57 * @author Arthur van Hoff
58 */
59 @SuppressWarnings("serial") // JDK implementation class
60 public
61 abstract class AppletPanel extends Panel implements AppletStub, Runnable {
62
63 /**
64 * The applet (if loaded).
65 */
66 Applet applet;
67
68
69 /**
70 * The classloader for the applet.
71 */
72 protected AppletClassLoader loader;
73
74 /* applet event ids */
75 public final static int APPLET_DISPOSE = 0;
76 public final static int APPLET_LOAD = 1;
77 public final static int APPLET_INIT = 2;
78 public final static int APPLET_START = 3;
79 public final static int APPLET_STOP = 4;
80 public final static int APPLET_DESTROY = 5;
81 public final static int APPLET_QUIT = 6;
82 public final static int APPLET_ERROR = 7;
83
84 /* send to the parent to force relayout */
85 public final static int APPLET_RESIZE = 51234;
86
87 /* sent to a (distant) parent to indicate that the applet is being
88 * loaded or as completed loading
89 */
90 public final static int APPLET_LOADING = 51235;
91 public final static int APPLET_LOADING_COMPLETED = 51236;
92
93 /**
94 * The current status. One of:
95 * APPLET_DISPOSE,
96 * APPLET_LOAD,
97 * APPLET_INIT,
98 * APPLET_START,
99 * APPLET_STOP,
100 * APPLET_DESTROY,
101 * APPLET_ERROR.
102 */
103 protected int status;
104
105 /**
106 * The thread for the applet.
107 */
108 protected Thread handler;
109
110
111 /**
115
116 /**
117 * The current applet size.
118 */
119 Dimension currentAppletSize = new Dimension(10, 10);
120
121 MessageUtils mu = new MessageUtils();
122
123 /**
124 * The thread to use during applet loading
125 */
126
127 Thread loaderThread = null;
128
129 /**
130 * Flag to indicate that a loading has been cancelled
131 */
132 boolean loadAbortRequest = false;
133
134 /* abstract classes */
135 abstract protected String getCode();
136 abstract protected String getJarFiles();
137
138 @Override
139 abstract public int getWidth();
140 @Override
141 abstract public int getHeight();
142 abstract public boolean hasInitialFocus();
143
144 private static int threadGroupNumber = 0;
145
146 protected void setupAppletAppContext() {
147 // do nothing
148 }
149
150 /*
151 * Creates a thread to run the applet. This method is called
152 * each time an applet is loaded and reloaded.
153 */
154 synchronized void createAppletThread() {
155 // Create a thread group for the applet, and start a new
156 // thread to load the applet.
157 String nm = "applet-" + getCode();
158 loader = getClassLoader(getCodeBase(), getClassLoaderCacheKey());
159 loader.grab(); // Keep this puppy around!
160
161 // 4668479: Option to turn off codebase lookup in AppletClassLoader
162 // during resource requests. [stanley.ho]
233 }
234
235 /**
236 * Preferred size
237 */
238 @Override
239 @SuppressWarnings("deprecation")
240 public Dimension preferredSize() {
241 return new Dimension(currentAppletSize.width,
242 currentAppletSize.height);
243 }
244
245 private AppletListener listeners;
246
247 /**
248 * AppletEvent Queue
249 */
250 private Queue<Integer> queue = null;
251
252
253 synchronized public void addAppletListener(AppletListener l) {
254 listeners = AppletEventMulticaster.add(listeners, l);
255 }
256
257 synchronized public void removeAppletListener(AppletListener l) {
258 listeners = AppletEventMulticaster.remove(listeners, l);
259 }
260
261 /**
262 * Dispatch event to the listeners..
263 */
264 public void dispatchAppletEvent(int id, Object argument) {
265 //System.out.println("SEND= " + id);
266 if (listeners != null) {
267 AppletEvent evt = new AppletEvent(this, id, argument);
268 listeners.appletStateChanged(evt);
269 }
270 }
271
272 /**
273 * Send an event. Queue it for execution by the handler thread.
274 */
275 public void sendEvent(int id) {
276 synchronized(this) {
277 if (queue == null) {
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55 * destroy() methods.
56 *
57 * @author Arthur van Hoff
58 */
59 @SuppressWarnings("serial") // JDK implementation class
60 public
61 abstract class AppletPanel extends Panel implements AppletStub, Runnable {
62
63 /**
64 * The applet (if loaded).
65 */
66 Applet applet;
67
68
69 /**
70 * The classloader for the applet.
71 */
72 protected AppletClassLoader loader;
73
74 /* applet event ids */
75 public static final int APPLET_DISPOSE = 0;
76 public static final int APPLET_LOAD = 1;
77 public static final int APPLET_INIT = 2;
78 public static final int APPLET_START = 3;
79 public static final int APPLET_STOP = 4;
80 public static final int APPLET_DESTROY = 5;
81 public static final int APPLET_QUIT = 6;
82 public static final int APPLET_ERROR = 7;
83
84 /* send to the parent to force relayout */
85 public static final int APPLET_RESIZE = 51234;
86
87 /* sent to a (distant) parent to indicate that the applet is being
88 * loaded or as completed loading
89 */
90 public static final int APPLET_LOADING = 51235;
91 public static final int APPLET_LOADING_COMPLETED = 51236;
92
93 /**
94 * The current status. One of:
95 * APPLET_DISPOSE,
96 * APPLET_LOAD,
97 * APPLET_INIT,
98 * APPLET_START,
99 * APPLET_STOP,
100 * APPLET_DESTROY,
101 * APPLET_ERROR.
102 */
103 protected int status;
104
105 /**
106 * The thread for the applet.
107 */
108 protected Thread handler;
109
110
111 /**
115
116 /**
117 * The current applet size.
118 */
119 Dimension currentAppletSize = new Dimension(10, 10);
120
121 MessageUtils mu = new MessageUtils();
122
123 /**
124 * The thread to use during applet loading
125 */
126
127 Thread loaderThread = null;
128
129 /**
130 * Flag to indicate that a loading has been cancelled
131 */
132 boolean loadAbortRequest = false;
133
134 /* abstract classes */
135 protected abstract String getCode();
136 protected abstract String getJarFiles();
137
138 @Override
139 public abstract int getWidth();
140 @Override
141 public abstract int getHeight();
142 public abstract boolean hasInitialFocus();
143
144 private static int threadGroupNumber = 0;
145
146 protected void setupAppletAppContext() {
147 // do nothing
148 }
149
150 /*
151 * Creates a thread to run the applet. This method is called
152 * each time an applet is loaded and reloaded.
153 */
154 synchronized void createAppletThread() {
155 // Create a thread group for the applet, and start a new
156 // thread to load the applet.
157 String nm = "applet-" + getCode();
158 loader = getClassLoader(getCodeBase(), getClassLoaderCacheKey());
159 loader.grab(); // Keep this puppy around!
160
161 // 4668479: Option to turn off codebase lookup in AppletClassLoader
162 // during resource requests. [stanley.ho]
233 }
234
235 /**
236 * Preferred size
237 */
238 @Override
239 @SuppressWarnings("deprecation")
240 public Dimension preferredSize() {
241 return new Dimension(currentAppletSize.width,
242 currentAppletSize.height);
243 }
244
245 private AppletListener listeners;
246
247 /**
248 * AppletEvent Queue
249 */
250 private Queue<Integer> queue = null;
251
252
253 public synchronized void addAppletListener(AppletListener l) {
254 listeners = AppletEventMulticaster.add(listeners, l);
255 }
256
257 public synchronized void removeAppletListener(AppletListener l) {
258 listeners = AppletEventMulticaster.remove(listeners, l);
259 }
260
261 /**
262 * Dispatch event to the listeners..
263 */
264 public void dispatchAppletEvent(int id, Object argument) {
265 //System.out.println("SEND= " + id);
266 if (listeners != null) {
267 AppletEvent evt = new AppletEvent(this, id, argument);
268 listeners.appletStateChanged(evt);
269 }
270 }
271
272 /**
273 * Send an event. Queue it for execution by the handler thread.
274 */
275 public void sendEvent(int id) {
276 synchronized(this) {
277 if (queue == null) {
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