Source Code Cross Referenced for CommandExecutor.java in  » Ajax » Laszlo-4.0.10 » org » openlaszlo » iv » flash » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » Laszlo 4.0.10 » org.openlaszlo.iv.flash.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: CommandExecutor.java,v 1.5 2002/04/04 08:14:25 skavish Exp $
003:         *
004:         * ===========================================================================
005:         *
006:         * The JGenerator Software License, Version 1.0
007:         *
008:         * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
009:         *
010:         * Redistribution and use in source and binary forms, with or without
011:         * modification, are permitted provided that the following conditions are met:
012:         *
013:         * 1. Redistributions of source code must retain the above copyright
014:         *    notice, this list of conditions and the following disclaimer.
015:         *
016:         * 2. Redistributions in binary form must reproduce the above copyright
017:         *    notice, this list of conditions and the following disclaimer in
018:         *    the documentation and/or other materials provided with the
019:         *    distribution.
020:         *
021:         * 3. The end-user documentation included with the redistribution, if
022:         *    any, must include the following acknowlegement:
023:         *    "This product includes software developed by Dmitry Skavish
024:         *     (skavish@usa.net, http://www.flashgap.com/)."
025:         *    Alternately, this acknowlegement may appear in the software itself,
026:         *    if and wherever such third-party acknowlegements normally appear.
027:         *
028:         * 4. The name "The JGenerator" must not be used to endorse or promote
029:         *    products derived from this software without prior written permission.
030:         *    For written permission, please contact skavish@usa.net.
031:         *
032:         * 5. Products derived from this software may not be called "The JGenerator"
033:         *    nor may "The JGenerator" appear in their names without prior written
034:         *    permission of Dmitry Skavish.
035:         *
036:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039:         * DISCLAIMED.  IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
040:         * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047:         * SUCH DAMAGE.
048:         *
049:         */
050:
051:        package org.openlaszlo.iv.flash.util;
052:
053:        import org.openlaszlo.iv.flash.api.*;
054:        import org.openlaszlo.iv.flash.context.*;
055:
056:        import java.util.*;
057:        import java.text.*;
058:        import java.io.*;
059:        import java.lang.reflect.*;
060:
061:        /**
062:         * Standard executor of context commands.
063:         * <P>
064:         * To add new command you have to add new method to this class
065:         * or to one of its subclasses. Name of the command will be name of the method.
066:         * If command was invoked without parameters then method without parameters will be
067:         * called, if command was invoked with several parameters then method with corresponding
068:         * number of parameters will be called. If none of these was succeded then method with
069:         * parameter Vector will be called.
070:         *
071:         * @author Dmitry Skavish
072:         * @see CommandContext
073:         */
074:        public class CommandExecutor {
075:
076:            protected FlashFile flashFile;
077:
078:            /**
079:             * Create executor in environment of given flash file.
080:             *
081:             * @param file   environment for executor
082:             */
083:            public CommandExecutor(FlashFile flashFile) {
084:                this .flashFile = flashFile;
085:            }
086:
087:            public CommandExecutor() {
088:            }
089:
090:            public void setFlashFile(FlashFile flashFile) {
091:                this .flashFile = flashFile;
092:            }
093:
094:            public FlashFile getFlashFile() {
095:                return flashFile;
096:            }
097:
098:            /**
099:             * Executes command.
100:             *
101:             * @param context context from which the command was called
102:             * @param name    name fo the command
103:             * @param parms   parameters or null
104:             * @return result of the command execution
105:             */
106:            public String execute(Context context, String name, Vector parms) {
107:                try {
108:                    Class c = getClass();
109:                    Method m;
110:                    Object[] mp;
111:                    try {
112:                        if (parms == null) {
113:                            m = c
114:                                    .getMethod(name,
115:                                            new Class[] { Context.class });
116:                            mp = null;
117:                        } else {
118:                            Class[] cmp = new Class[parms.size() + 1];
119:                            cmp[0] = Context.class;
120:                            for (int i = 1; i < cmp.length; i++)
121:                                cmp[i] = String.class;
122:                            m = c.getMethod(name, cmp);
123:                            mp = new Object[cmp.length];
124:                            mp[0] = context;
125:                            for (int i = 1; i < cmp.length; i++)
126:                                mp[i] = parms.elementAt(i - 1);
127:                        }
128:                    } catch (NoSuchMethodException e) {
129:                        m = c.getMethod(name, new Class[] { Context.class,
130:                                Vector.class });
131:                        mp = new Object[] { context, parms };
132:                    }
133:                    Object res = m.invoke(this , mp);
134:                    if (res == null)
135:                        return "";
136:                    return res.toString();
137:                } catch (NoSuchMethodException e) {
138:                    Log
139:                            .logRB(Resource.INLINECMDNOTFOUND,
140:                                    new Object[] { name });
141:                    return "";
142:                } catch (IllegalAccessException e) {
143:                    Log
144:                            .logRB(Resource.INLINECMDERROR,
145:                                    new Object[] { name }, e);
146:                    return "";
147:                } catch (InvocationTargetException e) {
148:                    Log
149:                            .logRB(Resource.INLINECMDERROR,
150:                                    new Object[] { name }, e);
151:                    return "";
152:                }
153:            }
154:
155:            /*---------------------------------------------------------------------------------*/
156:            /*                                   C O M M A N D S                               */
157:            /*---------------------------------------------------------------------------------*/
158:
159:            /**
160:             * Returns current time and date
161:             *
162:             * @return current time and date
163:             */
164:            public String date(Context context) {
165:                return new Date().toLocaleString();
166:            }
167:
168:            /**
169:             * Returns current time and date formatted according to given template.<p>
170:             * Examples:
171:             * <UL>
172:             * <LI>MM/dd/yyyy hh:mm:ss z
173:             * </UL>
174:             *
175:             * @param format date format
176:             * @return current formatted date
177:             */
178:            public String date(Context context, String format) {
179:                SimpleDateFormat formatter = new SimpleDateFormat(format);
180:                return formatter.format(new Date());
181:            }
182:
183:            /**
184:             * Return JGenerator version
185:             *
186:             * @return JGenerator version
187:             */
188:            public String version(Context context) {
189:                return Util.getVersion();
190:            }
191:
192:            /**
193:             * Returns substring of specified string
194:             *
195:             * @param s      specified string
196:             * @param from   start index
197:             * @return substring
198:             */
199:            public String substr(Context context, String s, String from) {
200:                //System.out.println( "substr('"+s+"', '"+from+"')" );
201:                try {
202:                    return s.substring(Util.toInt(from, -1));
203:                } catch (Exception e) {
204:                    Log.logRB(e);
205:                    return "";
206:                }
207:            }
208:
209:            /**
210:             * Returns substring of specified string
211:             *
212:             * @param s      specified string
213:             * @param from   start index
214:             * @param to     to index
215:             * @return substring
216:             */
217:            public String substr(Context context, String s, String from,
218:                    String to) {
219:                //System.out.println( "substr('"+s+"', '"+from+"', '"+to+"')" );
220:                try {
221:                    return s
222:                            .substring(Util.toInt(from, -1), Util.toInt(to, -1));
223:                } catch (Exception e) {
224:                    Log.logRB(e);
225:                    return "";
226:                }
227:            }
228:
229:            /**
230:             * Returns length of the specified string
231:             *
232:             * @param s      specified string
233:             * @return length of the specified string
234:             */
235:            public String len(Context context, String s) {
236:                return Integer.toString(s.length());
237:            }
238:
239:            /**
240:             * Converts hex to decimal: 20 -> 32
241:             *
242:             * @param s      string in hex representation
243:             * @return decimal representation
244:             */
245:            public String h2d(Context context, String s) {
246:                return Integer.toString(Integer.parseInt(s, 16));
247:            }
248:
249:            /**
250:             * Converts decimal to hex: 32 -> 20
251:             *
252:             * @param s      string in decimal representation
253:             * @return hex representation
254:             */
255:            public String d2h(Context context, String s) {
256:                return Integer.toHexString(Integer.parseInt(s));
257:            }
258:
259:            /**
260:             * Converts decimal to binary: 4 -> 100
261:             *
262:             * @param s      string in decimal representation
263:             * @return binary representation
264:             */
265:            public String d2b(Context context, String s) {
266:                return Integer.toBinaryString(Integer.parseInt(s));
267:            }
268:
269:            /**
270:             * Converts color to its web color representation
271:             * <P>
272:             * For example:
273:             * <P>
274:             * red -> #ffff0000
275:             * green -> #ff00ff00
276:             *
277:             * @param s      color specified either by name or by webcolor
278:             * @return web representation of color
279:             */
280:            public String color2web(Context context, String s) {
281:                AlphaColor c = Util.toColor(s, AlphaColor.black);
282:                StringBuffer sb = new StringBuffer(10);
283:                sb.append('#');
284:                sb.append(Util.b2h(c.getAlpha()));
285:                sb.append(Util.b2h(c.getRed()));
286:                sb.append(Util.b2h(c.getGreen()));
287:                sb.append(Util.b2h(c.getBlue()));
288:                return sb.toString();
289:            }
290:
291:            /**
292:             * Returns red component of specified color in decimal
293:             *
294:             * @param s      specified color either by its name or by web color
295:             * @return red component
296:             */
297:            public String red(Context context, String s) {
298:                AlphaColor c = Util.toColor(s, AlphaColor.black);
299:                return Integer.toString(c.getRed());
300:            }
301:
302:            /**
303:             * Returns green component of specified color in decimal
304:             *
305:             * @param s      specified color either by its name or by web color
306:             * @return green component
307:             */
308:            public String green(Context context, String s) {
309:                AlphaColor c = Util.toColor(s, AlphaColor.black);
310:                return Integer.toString(c.getGreen());
311:            }
312:
313:            /**
314:             * Returns blue component of specified color in decimal
315:             *
316:             * @param s      specified color either by its name or by web color
317:             * @return blue component
318:             */
319:            public String blue(Context context, String s) {
320:                AlphaColor c = Util.toColor(s, AlphaColor.black);
321:                return Integer.toString(c.getBlue());
322:            }
323:
324:            /**
325:             * Returns alpha component of specified color in decimal
326:             *
327:             * @param s      specified color either by its name or by web color
328:             * @return alpha component
329:             */
330:            public String alpha(Context context, String s) {
331:                AlphaColor c = Util.toColor(s, AlphaColor.black);
332:                return Integer.toString(c.getAlpha());
333:            }
334:
335:            /**
336:             * Loads and executes javascript file
337:             *
338:             * @param fileName file with javascript
339:             * @return whatever was printed during execution of javascript
340:             */
341:            public String js(Context context, String fileName) {
342:                String s = fileName;
343:                int idx = s.indexOf('?');
344:                if (idx != -1) {
345:                    fileName = s.substring(0, idx);
346:                }
347:                fileName = fileName.trim();
348:
349:                File file = new File(fileName);
350:                if (!file.isAbsolute())
351:                    file = new File(flashFile.getFileDir(), file.getPath());
352:                fileName = file.getAbsolutePath();
353:
354:                Hashtable parms = null;
355:                if (idx >= 0)
356:                    parms = Util.parseUrlParms(s, idx);
357:
358:                String[] args = new String[parms != null ? parms.size() : 0];
359:                if (parms != null) {
360:                    int i = 0;
361:                    for (Enumeration e = parms.keys(); e.hasMoreElements();) {
362:                        args[i++] = (String) e.nextElement();
363:                    }
364:                }
365:
366:                String res = Util.executeJSFile(context, fileName, args);
367:                return res;
368:            }
369:
370:        }
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