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package org.seasar.uruma.binding.method; |
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import org.eclipse.swt.events.TypedEvent; |
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import org.eclipse.swt.widgets.Event; |
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import org.seasar.uruma.binding.value.ValueBindingSupport; |
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import org.seasar.uruma.binding.widget.WidgetBinder; |
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import org.seasar.uruma.context.PartContext; |
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import org.seasar.uruma.log.UrumaLogger; |
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import org.seasar.uruma.util.AssertionUtil; |
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public abstract class AbstractGenericListener implements MethodCallback { |
32 | 4 | private static final UrumaLogger logger = UrumaLogger |
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.getLogger(AbstractGenericListener.class); |
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protected PartContext context; |
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protected MethodBinding methodBinding; |
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AbstractGenericListener(final PartContext context, |
40 | 428 | final MethodBinding methodBinding) { |
41 | 428 | AssertionUtil.assertNotNull("context", context); |
42 | 428 | AssertionUtil.assertNotNull("methodBinding", methodBinding); |
43 | 428 | this.methodBinding = methodBinding; |
44 | 428 | this.context = context; |
45 | 428 | this.methodBinding.setCallback(this); |
46 | 428 | } |
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protected Object invokeMethod() { |
54 | 4 | return invokeMethod(null); |
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} |
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protected Object invokeMethod(final Object event) { |
77 | 44 | if (checkLoop()) { |
78 | 0 | return null; |
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} |
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try { |
82 | 44 | WidgetBinder.bindWidgets(methodBinding.getTarget(), context); |
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84 | 44 | ValueBindingSupport.importSelection(context); |
85 | 44 | ValueBindingSupport.importValue(context); |
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87 | 44 | Object result = methodBinding.invoke(new Object[] { event }); |
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89 | 44 | return result; |
90 | 0 | } catch (Throwable ex) { |
91 | 0 | logger.log(ex); |
92 | 0 | return null; |
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} |
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} |
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public Object callback(final MethodBinding binding, final Object[] args, |
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final Object returnValue) { |
102 | 44 | Object event = null; |
103 | 44 | if (args != null && args.length > 0) { |
104 | 44 | event = args[0]; |
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} |
106 | 44 | if (!isDisposed(event)) { |
107 | 36 | ValueBindingSupport.exportValue(context); |
108 | 36 | ValueBindingSupport.exportSelection(context); |
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} |
110 | 44 | return returnValue; |
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} |
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protected boolean isDisposed(final Object event) { |
114 | 44 | if (event != null) { |
115 | 40 | if (event instanceof Event) { |
116 | 40 | return ((Event) event).widget.isDisposed(); |
117 | 0 | } else if (event instanceof TypedEvent) { |
118 | 0 | return ((TypedEvent) event).widget.isDisposed(); |
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} |
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} |
121 | 4 | return false; |
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} |
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protected boolean checkLoop() { |
125 | 44 | StackTraceElement elements[] = Thread.currentThread().getStackTrace(); |
126 | 44 | if (elements != null) { |
127 | 44 | int count = 0; |
128 | 44 | String myClassName = getClass().getName(); |
129 | 2432 | for (StackTraceElement element : elements) { |
130 | 2388 | if (myClassName.equals(element.getClassName())) { |
131 | 44 | count++; |
132 | 44 | if (count > 1) { |
133 | 0 | return true; |
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} |
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} |
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} |
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} |
138 | 44 | return false; |
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} |
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} |