Source Code Cross Referenced for JavaScriptObjectHelper.java in  » Ajax » gwtext-2.01 » com » gwtext » client » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » gwtext 2.01 » com.gwtext.client.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * GWT-Ext Widget Library
003:         * Copyright(c) 2007-2008, GWT-Ext.
004:         * licensing@gwt-ext.com
005:         * 
006:         * http://www.gwt-ext.com/license
007:         */
008:
009:        package com.gwtext.client.util;
010:
011:        import com.google.gwt.core.client.JavaScriptObject;
012:        import com.google.gwt.user.client.Element;
013:        import com.gwtext.client.core.Function;
014:        import com.gwtext.client.core.JsObject;
015:        import com.gwtext.client.widgets.Component;
016:        import com.gwtext.client.widgets.ComponentFactory;
017:
018:        import java.util.Date;
019:        import java.util.Iterator;
020:        import java.util.List;
021:        import java.util.Map;
022:
023:        /**
024:         * Internal helper class.
025:         */
026:        public class JavaScriptObjectHelper {
027:
028:            private JavaScriptObjectHelper() {
029:            }
030:
031:            public static native String getAttribute(JavaScriptObject elem,
032:                    String attr) /*-{
033:                var ret = elem[attr];
034:                return (ret === undefined) ? null : String(ret);
035:               }-*/;
036:
037:            public static native void setAttribute(JavaScriptObject elem,
038:                    String attr, String value) /*-{
039:                elem[attr] = value;
040:               }-*/;
041:
042:            public static native JavaScriptObject getAttributeAsJavaScriptObject(
043:                    JavaScriptObject elem, String attr) /*-{
044:                var ret = elem[attr];
045:                return (ret === undefined) ? null : ret;
046:               }-*/;
047:
048:            public static native JavaScriptObject[] getAttributeAsJavaScriptObjectArray(
049:                    JavaScriptObject elem, String attr) /*-{        
050:                   var arrayJS = elem[attr];
051:                return (arrayJS === undefined) ? null : @com.gwtext.client.util.JavaScriptObjectHelper::toArray(Lcom/google/gwt/core/client/JavaScriptObject;)(arrayJS);
052:               }-*/;
053:
054:            public static JavaScriptObject[] toArray(JavaScriptObject array) {
055:                int length = getJavaScriptObjectArraySize(array);
056:                JavaScriptObject[] recs = new JavaScriptObject[length];
057:                for (int i = 0; i < length; i++) {
058:                    recs[i] = getValueFromJavaScriptObjectArray(array, i);
059:                }
060:                return recs;
061:            }
062:
063:            public static Element[] toElementArray(JavaScriptObject array) {
064:                int length = getJavaScriptObjectArraySize(array);
065:                Element[] recs = new Element[length];
066:                for (int i = 0; i < length; i++) {
067:                    recs[i] = getElementValueFromJavaScriptObjectArray(array, i);
068:                }
069:                return recs;
070:            }
071:
072:            public static native void setAttribute(JavaScriptObject elem,
073:                    String attr, JavaScriptObject[] value) /*-{
074:                elem[attr] = value;
075:               }-*/;
076:
077:            public static void setAttribute(JavaScriptObject elem, String attr,
078:                    int[] values) {
079:                setAttribute(elem, attr, JavaScriptObjectHelper
080:                        .convertToJavaScriptArray(values));
081:            }
082:
083:            public static void setAttribute(JavaScriptObject elem, String attr,
084:                    String[] values) {
085:                setAttribute(elem, attr, JavaScriptObjectHelper
086:                        .convertToJavaScriptArray(values));
087:            }
088:
089:            public static void setAttribute(JavaScriptObject elem, String attr,
090:                    Date[] values) {
091:                setAttribute(elem, attr, JavaScriptObjectHelper
092:                        .convertToJavaScriptArray(values));
093:            }
094:
095:            public static native void setAttribute(JavaScriptObject elem,
096:                    String attr, Object value) /*-{
097:                   elem[attr] = value;
098:               }-*/;
099:
100:            public static native void setAttribute(JavaScriptObject elem,
101:                    String attr, JavaScriptObject value) /*-{
102:                elem[attr] = value;
103:               }-*/;
104:
105:            public static native void setAttribute(JavaScriptObject elem,
106:                    String attr, int value) /*-{
107:                elem[attr] = value;
108:               }-*/;
109:
110:            public static native void setAttribute(JavaScriptObject elem,
111:                    String attr, boolean value) /*-{
112:                elem[attr] = value;
113:               }-*/;
114:
115:            public static native void setAttribute(JavaScriptObject elem,
116:                    String attr, float value) /*-{
117:                elem[attr] = value;
118:               }-*/;
119:
120:            public static native void setAttribute(JavaScriptObject elem,
121:                    String attr, double value) /*-{
122:                elem[attr] = value;
123:               }-*/;
124:
125:            public static native void setAttribute(JavaScriptObject elem,
126:                    String attr, Function handler) /*-{
127:                elem[attr] = function() {
128:                       handler.@com.gwtext.client.core.Function::execute()();
129:                   };
130:               }-*/;
131:
132:            public static void setAttribute(JavaScriptObject elem, String attr,
133:                    Date value) {
134:                if (value == null) {
135:                    setAttribute(elem, attr, (String) null);
136:                } else {
137:                    setDateAttribute(elem, attr, value.getTime());
138:                }
139:            }
140:
141:            private static native void setDateAttribute(JavaScriptObject elem,
142:                    String attr, long time) /*-{
143:                   elem[attr] = new $wnd.Date(time);
144:               }-*/;
145:
146:            public static native void setObjectAttribute(JavaScriptObject elem,
147:                    String attr, Object object) /*-{
148:                       elem[attr] = object;
149:               }-*/;
150:
151:            public static native Element getAttributeAsElement(
152:                    JavaScriptObject elem, String attr) /*-{
153:                var ret = elem[attr];
154:                return (ret === undefined) ? null : ret;
155:               }-*/;
156:
157:            public static native int getAttributeAsInt(JavaScriptObject elem,
158:                    String attr) /*-{
159:                var ret = elem[attr];
160:                return (ret === undefined) ? 0 : ret;
161:               }-*/;
162:
163:            public static native Date getAttributeAsDate(JavaScriptObject elem,
164:                    String attr) /*-{
165:                var ret = elem[attr];
166:                return (ret === undefined || ret == null) ? null: @com.gwtext.client.util.JavaScriptObjectHelper::toDate(J)(ret.getTime());
167:               }-*/;
168:
169:            public static native float getAttributeAsFloat(
170:                    JavaScriptObject elem, String attr) /*-{
171:                var ret = elem[attr];
172:                return (ret === undefined) ? 0 : ret;
173:               }-*/;
174:
175:            public static int[] getAttributeAsIntArray(JavaScriptObject elem,
176:                    String attr) {
177:                int[] rtn = null;
178:                JavaScriptObject hold = getAttributeAsJavaScriptObject(elem,
179:                        attr);
180:
181:                if (hold != null) {
182:                    rtn = new int[getJavaScriptObjectArraySize(hold)];
183:
184:                    for (int i = 0; i < rtn.length; i++) {
185:                        rtn[i] = getIntValueFromJavaScriptObjectArray(hold, i);
186:                    }
187:                }
188:                return rtn;
189:            }
190:
191:            public static String[] getAttributeAsStringArray(
192:                    JavaScriptObject elem, String attr) {
193:                String[] rtn = null;
194:                JavaScriptObject hold = getAttributeAsJavaScriptObject(elem,
195:                        attr);
196:
197:                if (hold != null) {
198:                    rtn = new String[getJavaScriptObjectArraySize(hold)];
199:
200:                    for (int i = 0; i < rtn.length; i++) {
201:                        rtn[i] = getStringValueFromJavaScriptObjectArray(hold,
202:                                i);
203:                    }
204:                }
205:                return rtn;
206:            }
207:
208:            public static native int getJavaScriptObjectArraySize(
209:                    JavaScriptObject elem) /*-{
210:                if (elem) return elem.length;
211:                return 0;
212:               }-*/;
213:
214:            public static native int getIntValueFromJavaScriptObjectArray(
215:                    JavaScriptObject elem, int i) /*-{
216:                return elem[i];
217:               }-*/;
218:
219:            public static native String getStringValueFromJavaScriptObjectArray(
220:                    JavaScriptObject elem, int i) /*-{
221:                return elem[i];
222:               }-*/;
223:
224:            public static native JavaScriptObject getValueFromJavaScriptObjectArray(
225:                    JavaScriptObject elem, int i) /*-{
226:                return elem[i];
227:               }-*/;
228:
229:            public static native boolean getAttributeAsBoolean(
230:                    JavaScriptObject elem, String attr) /*-{
231:                var ret = elem[attr];
232:                return (ret === undefined) ? false : ret;
233:               }-*/;
234:
235:            public static native Object getAttributeAsObject(
236:                    JavaScriptObject elem, String attr) /*-{
237:                var ret = elem[attr];
238:                return (ret === undefined) ? null : ret;
239:               }-*/;
240:
241:            public static JavaScriptObject[] listToArray(List list) {
242:                JavaScriptObject[] array = new JavaScriptObject[list.size()];
243:
244:                for (int i = 0; i < array.length; i++) {
245:                    array[i] = (JavaScriptObject) list.get(i);
246:                }
247:                return array;
248:            }
249:
250:            public static JavaScriptObject arrayConvert(Object[] array) {
251:                JavaScriptObject result = newJSArray(array.length);
252:
253:                for (int i = 0; i < array.length; i++) {
254:                    arraySet(result, i, array[i]);
255:                }
256:                return result;
257:            }
258:
259:            public static JavaScriptObject arrayConvert(JavaScriptObject[] array) {
260:                JavaScriptObject result = newJSArray(array.length);
261:
262:                for (int i = 0; i < array.length; i++) {
263:                    arraySet(result, i, array[i]);
264:                }
265:                return result;
266:            }
267:
268:            private static native JavaScriptObject newJSArray(int length) /*-{
269:                if (length < 0) {
270:                    return new Array();
271:                } else {
272:                    return new Array(length);
273:                }
274:               }-*/;
275:
276:            public static native int arrayLength(JavaScriptObject array) /*-{
277:                return array.length;
278:               }-*/;
279:
280:            public static native Object arrayGetObject(JavaScriptObject array,
281:                    int index) /*-{
282:                return array[index];
283:               }-*/;
284:
285:            public static native void arraySet(JavaScriptObject array,
286:                    int index, Object value) /*-{
287:                array[index] = value;
288:               }-*/;
289:
290:            public static native void arraySet(JavaScriptObject array,
291:                    int index, JavaScriptObject value) /*-{
292:                array[index] = value;
293:               }-*/;
294:
295:            /**
296:             * This is used to access Element array as JavaScriptObject
297:             */
298:            public static native Element getElementValueFromJavaScriptObjectArray(
299:                    JavaScriptObject elem, int i) /*-{
300:               	return elem[i];
301:            }-*/;
302:
303:            public static native JavaScriptObject createObject() /*-{
304:                   return new Object;
305:               }-*/;
306:
307:            public static JavaScriptObject convertToJavaScriptArray(int[] array) {
308:                JavaScriptObject jsArray = createJavaScriptArray();
309:                for (int i = 0; i < array.length; i++) {
310:                    JavaScriptObjectHelper.setArrayValue(jsArray, i, array[i]);
311:                }
312:                return jsArray;
313:            }
314:
315:            public static JavaScriptObject convertToJavaScriptConfigArray(
316:                    Component[] components) {
317:                JavaScriptObject jsArray = createJavaScriptArray();
318:                for (int i = 0; i < components.length; i++) {
319:                    Component component = components[i];
320:                    JavaScriptObjectHelper.setArrayValue(jsArray, i, component
321:                            .getConfig());
322:                }
323:                return jsArray;
324:            }
325:
326:            public static JavaScriptObject convertToJavaScriptArray(
327:                    Object[] array) {
328:                JavaScriptObject jsArray = createJavaScriptArray();
329:                for (int i = 0; i < array.length; i++) {
330:                    Object val = array[i];
331:                    if (val instanceof  String) {
332:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
333:                                (String) val);
334:                    } else if (val instanceof  Integer) {
335:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
336:                                ((Integer) val).intValue());
337:                    } else if (val instanceof  Float) {
338:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
339:                                ((Float) val).floatValue());
340:                    } else if (val instanceof  Double) {
341:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
342:                                ((Double) val).doubleValue());
343:                    } else if (val instanceof  Boolean) {
344:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
345:                                ((Boolean) val).booleanValue());
346:                    } else if (val instanceof  Date) {
347:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
348:                                (Date) val);
349:                    } else if (val instanceof  JavaScriptObject) {
350:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
351:                                ((JavaScriptObject) val));
352:                    } else if (val instanceof  JsObject) {
353:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
354:                                ((JsObject) val).getJsObj());
355:                    } else if (val instanceof  Object[]) {
356:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
357:                                convertToJavaScriptArray((Object[]) val));
358:                    } else if (val instanceof  Object) {
359:                        JavaScriptObjectHelper.setArrayValue(jsArray, i,
360:                                ((Object) val));
361:                    }
362:                }
363:                return jsArray;
364:            }
365:
366:            public static Integer toInteger(int value) {
367:                return new Integer(value);
368:            }
369:
370:            public static Long toLong(long value) {
371:                return new Long(value);
372:            }
373:
374:            public static Float toFloat(float value) {
375:                return new Float(value);
376:            }
377:
378:            public static Double toDouble(double value) {
379:                return new Double(value);
380:            }
381:
382:            public static Date toDate(long millis) {
383:                return new Date(millis);
384:            }
385:
386:            public static Boolean toBoolean(boolean value) {
387:                return Boolean.valueOf(value);
388:            }
389:
390:            public static native JavaScriptObject createJavaScriptArray() /*-{
391:                   //Important : constructing an from JSNI array using [] or new Array() results in a
392:                   //corrupted array object in the final javascript. The array ends up havign the correct elements
393:                   //but the test (myarr instaneof Array) fails because the jsni created array constructor is different.
394:                   //Need to construct array within the scope of the applications iframe by using new $wnd.Array
395:                   //return new $wnd.Array();
396:                   //to work around safari bug, call funtion in main window that returns new Array
397:                   //see http://bugs.webkit.org/show_bug.cgi?id=17250
398:                   //http://extjs.com/forum/showthread.php?t=25874
399:                   return $wnd.newArray();
400:               }-*/;
401:
402:            public static void setArrayValue(JavaScriptObject array, int index,
403:                    Date value) {
404:                setArrayDateValue(array, index, value.getTime());
405:            }
406:
407:            private static native void setArrayDateValue(
408:                    JavaScriptObject array, int index, long time) /*-{
409:                   array[index] = new $wnd.Date(time);
410:               }-*/;
411:
412:            public static native void setArrayValue(JavaScriptObject array,
413:                    int index, String value) /*-{
414:                   array[index] = value;
415:               }-*/;
416:
417:            public static native void setArrayValue(JavaScriptObject array,
418:                    int index, double value) /*-{
419:                   array[index] = value;
420:               }-*/;
421:
422:            public static native void setArrayValue(JavaScriptObject array,
423:                    int index, float value) /*-{
424:                   array[index] = value;
425:               }-*/;
426:
427:            public static native void setArrayValue(JavaScriptObject array,
428:                    int index, boolean value) /*-{
429:                   array[index] = value;
430:               }-*/;
431:
432:            public static native void setArrayValue(JavaScriptObject array,
433:                    int index, JavaScriptObject value) /*-{
434:                   array[index] = value;
435:               }-*/;
436:
437:            public static native void setArrayValue(JavaScriptObject array,
438:                    int index, Object value) /*-{
439:                   array[index] = value;
440:               }-*/;
441:
442:            public static native String getArrayValue(JavaScriptObject array,
443:                    int index) /*-{
444:                   var result = array[index];
445:                   return (result == null || result === undefined) ? null : result;
446:               }-*/;
447:
448:            public static native int getIntArrayValue(JavaScriptObject array,
449:                    int index) /*-{
450:                   return array[index];
451:               }-*/;
452:
453:            public static native int getArrayLength(JavaScriptObject array) /*-{
454:                   return array.length;
455:               }-*/;
456:
457:            public static int[] convertToJavaIntArray(JavaScriptObject array) {
458:                int length = getArrayLength(array);
459:                int[] arr = new int[length];
460:                for (int i = 0; i < length; i++) {
461:                    arr[i] = getIntArrayValue(array, i);
462:                }
463:                return arr;
464:            }
465:
466:            public static String[] convertToJavaStringArray(
467:                    JavaScriptObject array) {
468:                if (array == null)
469:                    return new String[] {};
470:                int length = getArrayLength(array);
471:                String[] arr = new String[length];
472:                for (int i = 0; i < length; i++) {
473:                    arr[i] = getArrayValue(array, i);
474:                }
475:                return arr;
476:            }
477:
478:            public static Component[] convertToJavaComponentArray(
479:                    JavaScriptObject nativeArray) {
480:                if (nativeArray == null) {
481:                    return new Component[] {};
482:                }
483:                JavaScriptObject[] componentsj = JavaScriptObjectHelper
484:                        .toArray(nativeArray);
485:                Component[] components = new Component[componentsj.length];
486:                for (int i = 0; i < componentsj.length; i++) {
487:                    JavaScriptObject componentJS = componentsj[i];
488:                    components[i] = ComponentFactory.getComponent(componentJS);
489:                }
490:                return components;
491:            }
492:
493:            public static native void apply(JavaScriptObject config,
494:                    JavaScriptObject jsObj) /*-{
495:                   for(var k in config) {
496:                       jsObj[k] = config[k];
497:                   }
498:               }-*/;
499:
500:            public static void setAttribute(JavaScriptObject jsObj,
501:                    String attr, Map valueMap) {
502:                JavaScriptObject valueJS = convertMapToJavascriptObject(valueMap);
503:                setAttribute(jsObj, attr, valueJS);
504:            }
505:
506:            public static JavaScriptObject convertMapToJavascriptObject(
507:                    Map valueMap) {
508:                JavaScriptObject valueJS = JavaScriptObjectHelper
509:                        .createObject();
510:                for (Iterator iterator = valueMap.keySet().iterator(); iterator
511:                        .hasNext();) {
512:                    String key = (String) iterator.next();
513:                    Object value = valueMap.get(key);
514:                    if (value instanceof  JsObject) {
515:                        setAttribute(valueJS, key, ((JsObject) value)
516:                                .getJsObj());
517:                    } else if (value instanceof  Date) {
518:                        setAttribute(valueJS, key, ((Date) value));
519:                    } else if (value instanceof  Number) {
520:                        setAttribute(valueJS, key, ((Number) value)
521:                                .doubleValue());
522:                    } else if (value instanceof  String) {
523:                        setAttribute(valueJS, key, ((String) value));
524:                    } else if (value instanceof  Boolean) {
525:                        setAttribute(valueJS, key, ((Boolean) value)
526:                                .booleanValue());
527:                    } else {
528:                        throw new IllegalArgumentException(
529:                                "Unsupported type for attribute " + key + " : "
530:                                        + value);
531:                    }
532:                }
533:                return valueJS;
534:            }
535:
536:            public static native String[] getProperties(JavaScriptObject jsObj) /*-{
537:                   var props = @com.gwtext.client.util.JavaScriptObjectHelper::createJavaScriptArray()();
538:                   for(var k in jsObj) {
539:                       props.push(k);
540:                   }
541:                   return @com.gwtext.client.util.JavaScriptObjectHelper::convertToJavaStringArray(Lcom/google/gwt/core/client/JavaScriptObject;)(props);
542:               }-*/;
543:
544:            public static native String getPropertiesAsString(
545:                    JavaScriptObject jsObj) /*-{        
546:                   var props = '{';
547:                   for(var k in jsObj) {
548:                       props += '\n' + k;
549:                   }
550:                   return props + '}';
551:               }-*/;
552:
553:        }
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