B-1_14-DEV merge back to main
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@@ -26,67 +26,78 @@ import com.jacob.com.InvocationProxy;
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/**
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* RELEASE 1.12 EXPERIMENTAL.
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* <p>
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* Use this exactly like the DispatchEvents class. This class plugs in
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* an ActiveXInvocationProxy instead of an InvocationProxy. It is the
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* ActiveXInvocationProxy that implements the reflection calls and invoke
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* the found java event callbacks. See ActiveXInvocationProxy for details.
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* Use this exactly like the DispatchEvents class. This class plugs in an
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* ActiveXInvocationProxy instead of an InvocationProxy. It is the
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* ActiveXInvocationProxy that implements the reflection calls and invoke the
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* found java event callbacks. See ActiveXInvocationProxy for details.
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*
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*
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*
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*/
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public class ActiveXDispatchEvents extends DispatchEvents {
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/**
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* This is the most commonly used constructor.
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* <p>
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* Creates the event callback linkage between the the
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* MS program represented by the Dispatch object and the
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* Java object that will receive the callback.
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* @param sourceOfEvent Dispatch object who's MS app will generate callbacks
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* @param eventSink Java object that wants to receive the events
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*/
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public ActiveXDispatchEvents(Dispatch sourceOfEvent, Object eventSink) {
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super(sourceOfEvent, eventSink, null );
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}
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/**
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* This is the most commonly used constructor.
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* <p>
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* Creates the event callback linkage between the the MS program represented
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* by the Dispatch object and the Java object that will receive the
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* callback.
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*
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* @param sourceOfEvent
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* Dispatch object who's MS app will generate callbacks
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* @param eventSink
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* Java object that wants to receive the events
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*/
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public ActiveXDispatchEvents(Dispatch sourceOfEvent, Object eventSink) {
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super(sourceOfEvent, eventSink, null);
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}
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/**
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* None of the samples use this constructor.
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* <p>
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* Creates the event callback linkage between the the
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* MS program represented by the Dispatch object and the
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* Java object that will receive the callback.
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* @param sourceOfEvent Dispatch object who's MS app will generate callbacks
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* @param eventSink Java object that wants to receive the events
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* @param progId ???
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*/
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public ActiveXDispatchEvents(Dispatch sourceOfEvent, Object eventSink, String progId) {
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super(sourceOfEvent, eventSink, progId, null );
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}
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/**
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* None of the samples use this constructor.
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* <p>
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* Creates the event callback linkage between the the MS program represented
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* by the Dispatch object and the Java object that will receive the
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* callback.
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*
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* @param sourceOfEvent
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* Dispatch object who's MS app will generate callbacks
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* @param eventSink
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* Java object that wants to receive the events
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* @param progId
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* ???
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*/
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public ActiveXDispatchEvents(Dispatch sourceOfEvent, Object eventSink,
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String progId) {
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super(sourceOfEvent, eventSink, progId, null);
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}
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/**
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* Creates the event callback linkage between the the
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* MS program represented by the Dispatch object and the
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* Java object that will receive the callback.
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* <pre>
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* >ActiveXDispatchEvents de =
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* new ActiveXDispatchEvents(someDispatch,someEventHAndler,
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* "Excel.Application",
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* "C:\\Program Files\\Microsoft Office\\OFFICE11\\EXCEL.EXE");
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*
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* @param sourceOfEvent Dispatch object who's MS app will generate callbacks
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* @param eventSink Java object that wants to receive the events
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* @param progId , mandatory if the typelib is specified
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* @param typeLib The location of the typelib to use
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*/
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public ActiveXDispatchEvents(Dispatch sourceOfEvent, Object eventSink, String progId, String typeLib)
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{
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super(sourceOfEvent, eventSink, progId, typeLib);
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}
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/**
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* Creates the event callback linkage between the the MS program represented
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* by the Dispatch object and the Java object that will receive the
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* callback.
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*
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* <pre>
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* >ActiveXDispatchEvents de =
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* new ActiveXDispatchEvents(someDispatch,someEventHAndler,
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* "Excel.Application",
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* "C:\\Program Files\\Microsoft Office\\OFFICE11\\EXCEL.EXE");
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*
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* @param sourceOfEvent Dispatch object who's MS app will generate callbacks
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* @param eventSink Java object that wants to receive the events
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* @param progId , mandatory if the typelib is specified
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* @param typeLib The location of the typelib to use
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*
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*/
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public ActiveXDispatchEvents(Dispatch sourceOfEvent, Object eventSink,
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String progId, String typeLib) {
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super(sourceOfEvent, eventSink, progId, typeLib);
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}
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/*
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* (non-Javadoc)
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* @see com.jacob.com.DispatchEvents#getInvocationProxy(java.lang.Object)
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*/
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protected InvocationProxy getInvocationProxy(Object pTargetObject){
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/*
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* (non-Javadoc)
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*
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* @see com.jacob.com.DispatchEvents#getInvocationProxy(java.lang.Object)
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*/
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protected InvocationProxy getInvocationProxy(Object pTargetObject) {
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InvocationProxy newProxy = new ActiveXInvocationProxy();
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newProxy.setTarget(pTargetObject);
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return newProxy;
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@@ -29,63 +29,70 @@ import com.jacob.com.Variant;
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/**
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* RELEASE 1.12 EXPERIMENTAL.
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* <p>
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* This class that lets event handlers receive events with all java
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* objects as parameters. The standard Jacob event methods all accept an array of
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* Variant objects. When using this class, you can set up your event methods
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* as regular java methods with the correct number of parameters of the correct
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* java type. This does NOT work for any event that wishes to accept a call
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* back and modify the calling parameters to tell windows what to do. An example
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* is when an event lets the receiver cancel the action by setting a boolean flag
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* to false. The java objects cannot be modified and their values will not be passed
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* back into the originating Variants even if they could be modified.
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* This class that lets event handlers receive events with all java objects as
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* parameters. The standard Jacob event methods all accept an array of Variant
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* objects. When using this class, you can set up your event methods as regular
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* java methods with the correct number of parameters of the correct java type.
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* This does NOT work for any event that wishes to accept a call back and modify
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* the calling parameters to tell windows what to do. An example is when an
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* event lets the receiver cancel the action by setting a boolean flag to false.
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* The java objects cannot be modified and their values will not be passed back
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* into the originating Variants even if they could be modified.
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* <p>
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* This class acts as a proxy between the windows event callback mechanism and
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* the Java classes that are looking for events. It assumes that
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* all of the Java classes that are looking for events implement methods with the
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* same names as the windows events and that the implemented methods native
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* java objects of the type and order that match the windows documentation.
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* The methods can return void or a Variant that
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* will be returned to the calling layer. All Event methods that will be
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* recognized by InvocationProxyAllEvents have the signature
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*
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* <code> void eventMethodName(Object,Object...)</code>
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* or
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* <code> Object eventMethodName(Object,Object...)</code>
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* the Java classes that are looking for events. It assumes that all of the Java
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* classes that are looking for events implement methods with the same names as
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* the windows events and that the implemented methods native java objects of
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* the type and order that match the windows documentation. The methods can
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* return void or a Variant that will be returned to the calling layer. All
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* Event methods that will be recognized by InvocationProxyAllEvents have the
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* signature
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*
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* <code> void eventMethodName(Object,Object...)</code> or
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* <code> Object eventMethodName(Object,Object...)</code>
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*/
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public class ActiveXInvocationProxy extends InvocationProxy {
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/*
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* (non-Javadoc)
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* @see com.jacob.com.InvocationProxy#invoke(java.lang.String, com.jacob.com.Variant[])
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*
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* @see com.jacob.com.InvocationProxy#invoke(java.lang.String,
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* com.jacob.com.Variant[])
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*/
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@SuppressWarnings("unchecked")
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public Variant invoke(String methodName, Variant targetParameters[]) {
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Variant mVariantToBeReturned = null;
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if (mTargetObject == null){
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// structured programming guidlines say this return should not be up here
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Variant mVariantToBeReturned = null;
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if (mTargetObject == null) {
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// structured programming guidlines say this return should not be up
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// here
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return null;
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}
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Class targetClass = mTargetObject.getClass();
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if (methodName == null){
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throw new IllegalArgumentException("InvocationProxy: missing method name");
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if (methodName == null) {
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throw new IllegalArgumentException(
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"InvocationProxy: missing method name");
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}
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if (targetParameters == null){
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throw new IllegalArgumentException("InvocationProxy: missing Variant parameters");
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if (targetParameters == null) {
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throw new IllegalArgumentException(
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"InvocationProxy: missing Variant parameters");
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}
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try {
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Method targetMethod;
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Object parametersAsJavaObjects[] = getParametersAsJavaObjects(targetParameters);
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Class parametersAsJavaClasses[] = getParametersAsJavaClasses(parametersAsJavaObjects);
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targetMethod = targetClass.getMethod(methodName, parametersAsJavaClasses);
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if (targetMethod != null){
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Class parametersAsJavaClasses[] = getParametersAsJavaClasses(parametersAsJavaObjects);
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targetMethod = targetClass.getMethod(methodName,
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parametersAsJavaClasses);
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if (targetMethod != null) {
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// protected classes can't be invoked against even if they
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// let you grab the method. you could do targetMethod.setAccessible(true);
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// let you grab the method. you could do
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// targetMethod.setAccessible(true);
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// but that should be stopped by the security manager
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Object mReturnedByInvocation = null;
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mReturnedByInvocation =
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targetMethod.invoke(mTargetObject,parametersAsJavaObjects);
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if (mReturnedByInvocation == null){
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mReturnedByInvocation = targetMethod.invoke(mTargetObject,
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parametersAsJavaObjects);
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if (mReturnedByInvocation == null) {
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mVariantToBeReturned = null;
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} else if (!(mReturnedByInvocation instanceof Variant)){
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} else if (!(mReturnedByInvocation instanceof Variant)) {
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mVariantToBeReturned = new Variant(mReturnedByInvocation);
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} else {
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mVariantToBeReturned = (Variant) mReturnedByInvocation;
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@@ -95,11 +102,13 @@ public class ActiveXInvocationProxy extends InvocationProxy {
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// what causes this exception?
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e.printStackTrace();
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} catch (NoSuchMethodException e) {
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// this happens whenever the listener doesn't implement all the methods
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// this happens whenever the listener doesn't implement all the
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// methods
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} catch (IllegalArgumentException e) {
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// we can throw these inside the catch block so need to re-throw it
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Exception oneWeShouldToss = new IllegalArgumentException("Unable to map parameters for method "+methodName
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+ ": "+e.toString());
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// we can throw these inside the catch block so need to re-throw it
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Exception oneWeShouldToss = new IllegalArgumentException(
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"Unable to map parameters for method " + methodName + ": "
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+ e.toString());
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oneWeShouldToss.printStackTrace();
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} catch (IllegalAccessException e) {
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// can't access the method on the target instance for some reason
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@@ -109,23 +118,27 @@ public class ActiveXInvocationProxy extends InvocationProxy {
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e.printStackTrace();
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}
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return mVariantToBeReturned;
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}
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/**
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* creates a method signature compatible array of classes from an array of parameters
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* creates a method signature compatible array of classes from an array of
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* parameters
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*
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* @param parametersAsJavaObjects
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* @return
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*/
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@SuppressWarnings("unchecked")
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private Class[] getParametersAsJavaClasses(Object[] parametersAsJavaObjects) {
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if (parametersAsJavaObjects == null){
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throw new IllegalArgumentException("This only works with an array of parameters");
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if (parametersAsJavaObjects == null) {
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throw new IllegalArgumentException(
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"This only works with an array of parameters");
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}
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int numParameters = parametersAsJavaObjects.length;
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Class parametersAsJavaClasses[] = new Class[numParameters];
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for ( int parameterIndex = 0 ; parameterIndex < numParameters; parameterIndex++){
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for (int parameterIndex = 0; parameterIndex < numParameters; parameterIndex++) {
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Object oneParameterObject = parametersAsJavaObjects[parameterIndex];
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if (oneParameterObject == null){
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if (oneParameterObject == null) {
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parametersAsJavaClasses[parameterIndex] = null;
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} else {
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Class oneParameterClass = oneParameterObject.getClass();
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@@ -137,31 +150,34 @@ public class ActiveXInvocationProxy extends InvocationProxy {
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/**
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* converts an array of Variants to their associated Java types
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*
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* @param targetParameters
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* @return
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*/
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private Object[] getParametersAsJavaObjects(Variant[] targetParameters) {
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if (targetParameters == null){
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throw new IllegalArgumentException("This only works with an array of parameters");
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if (targetParameters == null) {
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throw new IllegalArgumentException(
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"This only works with an array of parameters");
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}
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int numParameters = targetParameters.length;
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Object parametersAsJavaObjects[] = new Object[numParameters];
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for ( int parameterIndex = 0 ; parameterIndex < numParameters; parameterIndex++){
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for (int parameterIndex = 0; parameterIndex < numParameters; parameterIndex++) {
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Variant oneParameterObject = targetParameters[parameterIndex];
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if (oneParameterObject == null){
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if (oneParameterObject == null) {
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parametersAsJavaObjects[parameterIndex] = null;
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} else {
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try {
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parametersAsJavaObjects[parameterIndex] = oneParameterObject.toJavaObject();
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} catch (NotImplementedException nie){
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throw new IllegalArgumentException("Can't convert parameter "+parameterIndex+
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" type "+oneParameterObject.getvt()
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+" to java object: "+nie.getMessage());
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parametersAsJavaObjects[parameterIndex] = oneParameterObject
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.toJavaObject();
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} catch (NotImplementedException nie) {
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throw new IllegalArgumentException(
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"Can't convert parameter " + parameterIndex
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+ " type " + oneParameterObject.getvt()
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+ " to java object: " + nie.getMessage());
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}
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}
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}
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return parametersAsJavaObjects;
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}
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}
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