Source Code Cross Referenced for UnEventDispatcher.java in  » J2EE » WiSerFramework » de » ug2t » unifiedGui » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » WiSerFramework » de.ug2t.unifiedGui 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // @@
002:        // @@
003:        /*
004:         * Wi.Ser Framework
005:         *
006:         * Version: 1.8.1, 20-September-2007  
007:         * Copyright (C) 2005 Dirk von der Weiden <dvdw@imail.de>
008:         *
009:         * This library is free software; you can redistribute it and/or
010:         * modify it under the terms of the GNU Lesser General Public
011:         * License as published by the Free Software Foundation; either
012:         * version 2 of the License, or (at your option) any later version.
013:         *
014:         * This library is distributed in the hope that it will be useful,
015:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
016:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
017:         * Lesser General Public License for more details.
018:         *
019:         * You should have received a copy of the GNU Lesser General Public
020:         * License along with this library located in LGPL.txt in the 
021:         * license directory; if not, write to the 
022:         * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
023:         * Boston, MA  02111-1307, USA.
024:         * 
025:         * If this agreement does not cover your requirements, please contact us
026:         * via email to get detailed information about the commercial license 
027:         * or our service offerings!
028:         *
029:         */
030:        // @@
031:        package de.ug2t.unifiedGui;
032:
033:        import java.util.*;
034:
035:        import de.ug2t.kernel.*;
036:        import de.ug2t.unifiedGui.exceptions.*;
037:        import de.ug2t.unifiedGui.interfaces.*;
038:
039:        /**
040:         * @author Dirk
041:         * 
042:         * date: 02.01.2004 project: WiSer-Framework
043:         * 
044:         * <p>
045:         * This class is responsible for dispatching all events along the
046:         * gui-object-tree. Normally this class is not for external use. It is used only
047:         * by the frameworks internal procedures. (Synchronisation mechanisms are
048:         * implemented in the commercial release only)
049:         * </p>
050:         */
051:        public final class UnEventDispatcher {
052:            /**
053:             * For internal use only
054:             */
055:
056:            // @@
057:            private IUnDispatchExceptionHandler pem_handler = null;
058:
059:            /**
060:             * For internal use only
061:             */
062:            public static synchronized boolean pcmf_isSingleProcessing() {
063:                boolean l_ret = false;
064:                // @@
065:                return (l_ret);
066:            }
067:
068:            /**
069:             * For internal use only
070:             */
071:            public static synchronized void pcmf_incReqCnt() throws Exception {
072:                // @@
073:            }
074:
075:            // @@
076:
077:            /**
078:             * For internal use only
079:             */
080:            public static synchronized void pcmf_decReqCnt() {
081:                // @@
082:            }
083:
084:            /**
085:             * For internal use only
086:             */
087:            public static synchronized void pcmf_startSingleProcessing()
088:                    throws Exception {
089:                // @@
090:            }
091:
092:            /**
093:             * For internal use only
094:             */
095:            public static synchronized void pcmf_endSingleProcessing() {
096:                // @@
097:            }
098:
099:            /**
100:             * Constructs a dispatcher-object with an errorhandler
101:             */
102:            public UnEventDispatcher(IUnDispatchExceptionHandler xHandler) {
103:                this .pem_handler = xHandler;
104:            }
105:
106:            /**
107:             * <p>
108:             * Dispatch an event to all chidren of the node referenced by the parameter
109:             * xrelativeRoot
110:             * </p>
111:             * <p>
112:             * 
113:             * </p>
114:             * <p>
115:             * 
116:             * @param xrelativeRoot
117:             *          the root node of the dispatching-process
118:             *          </p>
119:             */
120:            public void pcmf_execDispatch(KeTreeNode xrelativeRoot) {
121:                Iterator it = new ArrayList(xrelativeRoot.pcmf_getAllSubs())
122:                        .iterator();
123:                KeTreeNode l_go = null;
124:
125:                try {
126:                    try {
127:                        while (it.hasNext()) {
128:                            l_go = (KeTreeNode) (it.next());
129:                            if (l_go.pcmf_isDisabled() == false)
130:                                this .pcmf_execDispatch(l_go);
131:                        }
132:                        ;
133:
134:                        if (xrelativeRoot instanceof  UnComponent) {
135:                            if (((UnComponent) xrelativeRoot)
136:                                    .pcmf_isRefreshed()) {
137:                                try {
138:                                    ((UnComponent) xrelativeRoot)
139:                                            .pcmf_dispatchEvent();
140:                                } catch (UnDispatchErrorWrapper de) {
141:                                    if (this .pem_handler != null) {
142:                                        boolean l_prop = this .pem_handler
143:                                                .pcmf_handle(de);
144:                                        if (l_prop)
145:                                            throw (de.pcmf_getRootCause());
146:                                    } else
147:                                        throw (de.pcmf_getRootCause());
148:                                }
149:
150:                                KeTreeNode l_t = xrelativeRoot
151:                                        .pcmf_getParentNode();
152:                                if (l_t instanceof  UnComponent)
153:                                    ((UnComponent) l_t)
154:                                            .pcmf_setIndirectRefresh();
155:                            }
156:                            ;
157:
158:                            if (((UnComponent) xrelativeRoot)
159:                                    .pcmf_isIndirectRefreshed()) {
160:                                try {
161:                                    ((UnComponent) xrelativeRoot)
162:                                            .pcmf_dispatchIndirectEvent();
163:                                } catch (UnDispatchErrorWrapper de) {
164:                                    if (this .pem_handler != null) {
165:                                        boolean l_prop = this .pem_handler
166:                                                .pcmf_handle(de);
167:                                        if (l_prop)
168:                                            throw (de.pcmf_getRootCause());
169:                                    } else
170:                                        throw (de.pcmf_getRootCause());
171:                                }
172:
173:                                KeTreeNode l_t = xrelativeRoot
174:                                        .pcmf_getParentNode();
175:                                if (l_t instanceof  UnComponent)
176:                                    ((UnComponent) l_t)
177:                                            .pcmf_setIndirectRefresh();
178:                            }
179:                            ;
180:                        }
181:                    } catch (UnApplicationCloseException ae) {
182:                        KeLog
183:                                .pcmf_log(
184:                                        "ug2t",
185:                                        "application session terminated, dispatch aborted",
186:                                        this , KeLog.MESSAGE);
187:                    }
188:                } catch (Exception e) {
189:                    KeLog
190:                            .pcmf_log(
191:                                    "ug2t",
192:                                    "error while dispatching events, details as follows",
193:                                    this , KeLog.ERROR);
194:                    KeLog.pcmf_logException("ug2t", this , e);
195:                } catch (Throwable t) {
196:                    KeLog
197:                            .pcmf_log(
198:                                    "ug2t",
199:                                    "error while dispatching events, details as follows",
200:                                    this , KeLog.ERROR);
201:                    KeLog.pcmf_logThrowable("ug2t", this , t);
202:                }
203:
204:                return;
205:            };
206:
207:            /**
208:             * <p>
209:             * Dispatch an event to all chidren of the nodes in the Array
210:             * </p>
211:             * <p>
212:             * 
213:             * </p>
214:             * <p>
215:             * 
216:             * @param xNodes
217:             *          node list to dispatch events to
218:             *          </p>
219:             */
220:            public void pcmf_execDispatch(List xNodes) {
221:                try {
222:                    Iterator l_it = xNodes.iterator();
223:                    while (l_it.hasNext()) {
224:                        KeTreeNode l_comp = (KeTreeNode) l_it.next();
225:                        this .pcmf_execDispatch(l_comp);
226:                    }
227:                } catch (Exception e) {
228:                    KeLog
229:                            .pcmf_log(
230:                                    "ug2t",
231:                                    "error while dispatching events, details as follows",
232:                                    this , KeLog.ERROR);
233:                    KeLog.pcmf_logException("ug2t", this , e);
234:                }
235:            }
236:
237:            public void pcmf_execDispatch(ArrayList xDispList,
238:                    IUnApplication xAppl) {
239:                if (xAppl.pcmf_isEventBubbling()) {
240:                    this .pcmf_execDispatch(xDispList);
241:
242:                    if (xAppl.pcmf_isMDI())
243:                        this .pcmf_execDispatch(xAppl.pcmf_getUnComponent());
244:                    else {
245:                        Iterator l_it = xAppl.pcmf_getUnComponent()
246:                                .pcmf_getSubIterator();
247:                        while (l_it.hasNext()) {
248:                            Object l_obj = l_it.next();
249:                            if (l_obj instanceof  KeTreeNode
250:                                    && l_obj instanceof  IUnPage == false)
251:                                this .pcmf_execDispatch((KeTreeNode) l_obj);
252:                        }
253:                        this .pcmf_execDispatch(xAppl.pcmf_getActive());
254:                    }
255:                } else {
256:                    // sort by prio
257:                    Object[] l_toSort = xDispList.toArray();
258:                    Arrays.sort(l_toSort, 0, l_toSort.length, new Comparator() {
259:
260:                        public int compare(Object arg0, Object arg1) {
261:                            UnComponent l_o1 = (UnComponent) arg0;
262:                            UnComponent l_o2 = (UnComponent) arg1;
263:                            if (l_o1.pcmf_getEventPrio() > l_o2
264:                                    .pcmf_getEventPrio())
265:                                return (1);
266:                            else if (l_o1.pcmf_getEventPrio() < l_o2
267:                                    .pcmf_getEventPrio())
268:                                return (-1);
269:                            else
270:                                return (0);
271:
272:                        }
273:                    });
274:
275:                    this.pcmf_execDispatch(Arrays.asList(l_toSort));
276:                }
277:            }
278:        }
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