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package org.litesoft.GWT.forms.client.rpc;
import org.litesoft.GWT.client.*;
import org.litesoft.GWT.eventbus.client.*;
import org.litesoft.GWT.forms.client.*;
import org.litesoft.core.simpletypes.*;
import org.litesoft.core.util.*;
import org.litesoft.rpcpassable.*;
import org.litesoft.ui.def.nonpublic.support.*;
import org.litesoft.ui.support.*;
import java.util.*;
public class BusFormServicePeerChannel implements AsyncFormServicePeerChannel,
FormComponentBusConstants
{
private EventBus mEventBus;
private String mUniqueName;
private String mFormServicePeerFactoryName;
private InitializationListener mInitializationListener = null;
private OperationalListener mOperationalListener;
private EventPackageSubscriber mEventSubscription = null;
private String mServerPeer = null; // id of the server peer
private Map<AttributeResourceOptionsRequestData, ResourceKeyNameURLsAvailableCallback> mCallBacks =
new HashMap<AttributeResourceOptionsRequestData, ResourceKeyNameURLsAvailableCallback>();
/**
* @param pTraceNameBase an identifier which will form the base of the
* channel's subscriber id, i.e. the VIS_ID or unique id
*/
public BusFormServicePeerChannel( EventBus pEventBus, String pTraceNameBase,
String pFormServicePeerFactoryName )
{
mEventBus = pEventBus;
mUniqueName = UtilsCommon.assertNotNullNotEmpty( "TraceNameBase", pTraceNameBase ) +
"-BusFormServicePeerChannel-" + pEventBus.getNextUniqueID();
mFormServicePeerFactoryName = pFormServicePeerFactoryName;
}
public void init( FormUsage pFormUsage, RPCpassable pInitializationPayload,
OperationalListener pOperationalListener,
InitializationListener pInitializationListener )
{
mInitializationListener = pInitializationListener;
mOperationalListener = pOperationalListener;
mEventBus.subscribeAndPublish( mEventSubscription = getEventSubscription(), //
new FormCreationRequestPackage( mUniqueName, //
mFormServicePeerFactoryName, //
pFormUsage, pInitializationPayload ) );
}
public void requestValues( Integer pAsyncMessageNumber, String pRootTypeKeyOrNullForNew )
{
chkMethodOK( "requestValues" );
if ( pAsyncMessageNumber != null )
{
FormValuesRequestPackage zPackage = new FormValuesRequestPackage( mUniqueName, mServerPeer, //
pAsyncMessageNumber,
pRootTypeKeyOrNullForNew );
mEventBus.publish( zPackage );
}
}
public void requestResources( ResourceKeyNameURLsAvailableCallback pCallback,
AttributeResourceOptionsRequestData pRequest )
{
chkMethodOK( "requestResources" );
if ( (pRequest != null) && (pCallback != null) )
{
mCallBacks.put( pRequest, pCallback );
FormResourceRequestPackage zPackage = new FormResourceRequestPackage( mUniqueName, mServerPeer, //
pRequest );
mEventBus.publish( zPackage );
}
}
public void formEvents( FormToServicePeerData pFormToServicePeerData )
{
chkMethodOK( "formEvents" );
if ( pFormToServicePeerData != null )
{
FormToServicePeerPackage zPackage = new FormToServicePeerPackage( mUniqueName, mServerPeer, //
pFormToServicePeerData );
mEventBus.publish( zPackage );
}
}
public void dispose()
{
if ( (mServerPeer != null) && !isDisposed() )
{
if ( mEventSubscription != null )
{
mEventBus.unsubscribe( mEventSubscription );
mEventBus.publish( new FormDisposePackage( mUniqueName, mServerPeer ) );
mEventSubscription = null;
}
mEventBus = null;
mInitializationListener = null;
mOperationalListener = null;
mUniqueName = mFormServicePeerFactoryName = mServerPeer = null;
}
}
private boolean isDisposed()
{
return (mEventBus == null);
}
private void chkMethodOK( String pMethod )
{
if ( isDisposed() )
{
throw new IllegalStateException( pMethod + " unavailable. This form has been disposed" );
}
if ( mEventSubscription == null )
{
throw new IllegalStateException( pMethod + " unavailable. This form has NOT been init()'d" );
}
if ( mServerPeer == null )
{
throw new IllegalStateException( pMethod + " unavailable. " + mFormServicePeerFactoryName +
" has not replied with a ServerPeer ID" );
}
}
private EventPackageSubscriber getEventSubscription()
{
return new EventPackageSubscriber()
{
public String subscribeWith()
{
return mUniqueName;
}
public void packageReceivedVia( EventPackage pEventPackage, EventBus pEventBus )
{
String type = pEventPackage.getType();
if ( ServicePeerToFormPackage.UNSOLICITED_DATA.equals( type ) )
{
if ( mOperationalListener != null )
{
mOperationalListener.unsolicitedData(
((ServicePeerToFormPackage) pEventPackage).getToFormData() );
}
}
else if ( ServicePeerToFormPackage.RESPONSE_FROM_REQUEST_VALUES.equals( type ) )
{
if ( mOperationalListener != null )
{
mOperationalListener.responseFromRequestValues(
((ServicePeerToFormPackage) pEventPackage).getToFormData() );
}
}
else if ( FormCreationResponsePackage.EVENT_TYPE.equals( type ) )
{
mServerPeer = pEventPackage.getSourceName();
FormCreationResponsePackage zEvent = (FormCreationResponsePackage) pEventPackage;
if ( mInitializationListener != null )
{
ServicePeerToFormCreationData data = zEvent.getFormCreationData();
if ( data != null )
{
mInitializationListener.metaDataAvailable( data.getFormMetaData(),
data.getServicePeerXtra() );
}
String zExceptionText = zEvent.getExceptionText();
if ( zExceptionText != null )
{
AlertManager.alert( "FormServicePeer", "Initialization Error", zExceptionText );
}
}
}
else if ( FormResourceResponsePackage.EVENT_TYPE.equals( type ) )
{
FormResourceResponsePackage zEvent = (FormResourceResponsePackage) pEventPackage;
ResourceKeyNameURLsAvailableCallback zCallback = mCallBacks.get( zEvent.getRequest() );
if ( zCallback == null )
{
AlertManager.alert( "FormServicePeer", "Resourse Request Error",
"No Call Back for: " + zEvent.getRequest() );
return;
}
AttributeResourceOptionsResponseData zResponseData = zEvent.getResponse();
ResourceOptionsErrorType zErrorType = zResponseData.getErrorType();
if ( zErrorType != null )
{
zCallback.resourceRequestFailed( zErrorType, zResponseData.getErrorText() );
return;
}
zCallback.resourceKeyNameURLsAvailable( zResponseData.getResourceKeyNameURLs() );
}
}
};
}
}
|
GeorgeS
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