litesoft
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// This Source Code is in the Public Domain per: http://litesoft.org/License.txt package org.litesoft.GWT.forms.client.nonpublic; import java.util.*; import org.litesoft.GWT.forms.client.*; import org.litesoft.core.typeutils.*; import org.litesoft.logger.*; import org.litesoft.ui.def.nonpublic.support.*; public class RFHMessageManager extends com.google.gwt.user.client.Timer // fully qualified because multiple options { public static final long MAX_MESSAGE_WAIT_MSEC = 10000; private int mNumberSource = 0; private MMSent mSent = null; private List<MMEntry> mPendings = new ArrayList<MMEntry>(); private AsyncFormServicePeerChannel mFormServicePeerChannel; private Logger mLogger; public RFHMessageManager( AsyncFormServicePeerChannel pFormServicePeerChannel, Logger pLogger ) { mFormServicePeerChannel = pFormServicePeerChannel; mLogger = pLogger; scheduleRepeating( 250 ); } public void dispose() { cancel(); mSent = null; mPendings.clear(); } public void run() { if ( mSent != null ) { long now = System.currentTimeMillis(); if ( now < (mSent.getWhen() + MAX_MESSAGE_WAIT_MSEC) ) { return; } mLogger.warn.log( "Message Response Wait Exhausted" ); mSent = null; } LLsendNextPending(); } public void sendCollector( String pWho, FormToServicePeerDataCollector pCollector ) { if ( pCollector.isDirty() ) { if ( (mSent != null) || !mPendings.isEmpty() ) { mPendings.add( new MMEntry( pWho, pCollector ) ); } else { sendFormEvent( pWho, new FormToServicePeerData( pCollector ) ); } } } private void LLsendNextPending() { MMEntry zEntry = getNextPending(); if ( zEntry != null ) { FormToServicePeerData zData = zEntry.getData(); String zWho = zEntry.getWho(); sendFormEvent( zWho, zData ); } } private void sendFormEvent( String pWho, FormToServicePeerData pData ) { Integer zAsyncMessageNumber = pData.getAsyncMessageNumber(); mLogger.debug.log( "sendCollector(", zAsyncMessageNumber, "):", pWho, "|", pData ); mSent = new MMSent( zAsyncMessageNumber ); mFormServicePeerChannel.formEvents( pData ); } public void receivedAsyncMessageNumber( Integer pAsyncMessageNumber ) { mLogger.debug.log( "receivedAsyncMessageNumber:", pAsyncMessageNumber ); if ( mSent != null ) { if ( !Objects.areNonArraysEqual( mSent.getAsyncMessageNumber(), pAsyncMessageNumber ) ) { return; } mSent = null; } LLsendNextPending(); } private MMEntry getNextPending() { return !mPendings.isEmpty() ? mPendings.remove( 0 ) : null; } public void indicateSendForRequestValues( Integer pAsyncMessageNumber ) { if ( mSent != null ) { mLogger.error.log( "RequestValues, but still waiting on message: ", mSent.mAsyncMessageNumber ); mSent = null; } for ( MMEntry entry; null != (entry = getNextPending()); ) { mLogger.error.log( "RequestValues, but still waiting to send message: ", entry.getData() ); } mSent = new MMSent( pAsyncMessageNumber ); } public Integer getNextAsyncMessageNumber() { return ++mNumberSource; } private static class MMEntry { private String mWho; private FormToServicePeerData mData; public MMEntry( String pWho, FormToServicePeerDataCollector pCollector ) { mWho = pWho; mData = new FormToServicePeerData( pCollector ); } public String getWho() { return mWho; } public FormToServicePeerData getData() { return mData; } } private static class MMSent { private long mWhen = System.currentTimeMillis(); private Integer mAsyncMessageNumber; public MMSent( Integer pAsyncMessageNumber ) { mAsyncMessageNumber = pAsyncMessageNumber; } public long getWhen() { return mWhen; } public Integer getAsyncMessageNumber() { return mAsyncMessageNumber; } } } |