001 /*
002 * Copyright 2008-2016 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package griffon.builder.pivot
017
018 import org.apache.pivot.collections.Dictionary
019 import org.apache.pivot.collections.List as PivotList
020 import org.apache.pivot.collections.Map as PivotMap
021 import org.apache.pivot.collections.Sequence
022 import org.apache.pivot.collections.Set as PivotSet
023 import org.apache.pivot.util.ListenerList
024 import org.apache.pivot.wtk.Component
025 import org.apache.pivot.wtk.Form
026 import org.apache.pivot.wtk.TabPane
027 import org.apache.pivot.wtk.text.Span
028
029 import static griffon.util.GriffonNameUtils.getSetterName
030
031 /**
032 * @author Andres Almiray
033 */
034 final class PivotUtils {
035 private PivotUtils() {}
036
037 private static final String ENHANCED = "_ENHANCED_METACLASS_"
038
039 static boolean hasBeenEnhanced(Class klass) {
040 MetaClassRegistry mcr = GroovySystem.metaClassRegistry
041 MetaClass mc = mcr.getMetaClass(klass)
042 if (!(mc instanceof ExpandoMetaClass)) return false
043 return mc.hasMetaProperty(ENHANCED)
044 }
045
046 static void enhance(Class klass, Map enhancedMethods) {
047 MetaClassRegistry mcr = GroovySystem.metaClassRegistry
048 MetaClass mc = mcr.getMetaClass(klass)
049 boolean init = false
050 if (!(mc instanceof ExpandoMetaClass) ||
051 (mc instanceof ExpandoMetaClass && !mc.isModified())) {
052 mcr.removeMetaClass klass
053 mc = new ExpandoMetaClass(klass)
054 init = true
055 }
056 // if mc is an EMC that was initialized previously
057 // with additional methods/properties and it does
058 // not allow modifications after init, then the next
059 // block will throw an exception
060 enhancedMethods.each { k, v ->
061 if (mc.getMetaMethod(k) == null) {
062 mc.registerInstanceMethod(k, v)
063 }
064 }
065 mc.registerBeanProperty(ENHANCED, true)
066 if (init) {
067 mc.initialize()
068 mcr.setMetaClass(klass, mc)
069 }
070 }
071
072 static enhanceClasses() {
073 enhance(Sequence, [
074 iterator: {-> new FixedIterator(delegate, true) },
075 size: {-> delegate.getLength() },
076 getAt: { i -> delegate.get(i) },
077 putAt: { i, e -> delegate.update(i, e) }
078 ])
079 enhance(ListenerList, [
080 leftShift: { e -> delegate.add(e) }
081 ])
082 enhance(PivotList, [
083 leftShift: { e -> delegate.add(e) }
084 ])
085 enhance(PivotSet, [
086 leftShift: { e -> delegate.add(e) },
087 size: {-> delegate.getCount() }
088 ])
089 enhance(Dictionary, [
090 putAt: { k, v -> delegate.put(k, v) },
091 getAt: { k -> delegate.get(k) }
092 ])
093 enhance(PivotMap, [
094 size: {-> delegate.getCount() }
095 ])
096 enhance(Span, [
097 asRange: {-> new IntRange(delegate.start, delegate.end) },
098 size: {-> delegate.getLength() }
099 ])
100 enhance(Component, [
101 setFormLabel: { label -> Form.setLabel(delegate, label ? label.toString() : null) },
102 setFormFlag: { flag -> flag ? Form.setFlag(delegate, flag) : Form.setFlag(delegate, (Form.Flag) null) },
103 setTabLabel: { label -> TabPane.setLabel(delegate, label ? label.toString() : null) },
104 ])
105 }
106
107 static void setBeanProperty(String propertyName, value, bean) {
108 try {
109 // use setter method instead of property access
110 // workaround to multiple property setters & single property getter
111 String setter = getSetterName(propertyName)
112 bean."$setter"(value)
113 } catch (MissingPropertyException mpe) {
114 bean.styles.put(propertyName, value)
115 }
116 }
117 }
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