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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.GWT.client.nonpublic; |
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import java.util.*; |
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import org.litesoft.GWT.client.*; |
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import com.google.gwt.core.client.*; |
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import com.google.gwt.user.client.*; |
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import com.google.gwt.user.client.ui.*; |
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public class AbstractPopupManager implements CloseHandler<PopupPanel> |
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{ |
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protected static void show( AbstractEntry pEntry ) |
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{ |
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import java.util.*; |
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public class AbstractPopupManager implements CloseHandler<PopupPanel> { |
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protected static void show( AbstractEntry pEntry ) { |
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INSTANCE.addAndShow( pEntry ); |
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} |
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private static final AbstractPopupManager INSTANCE = new AbstractPopupManager(); |
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private void addAndShow( AbstractEntry pEntry ) |
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{ |
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if ( add( pEntry ) && !showing() ) |
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{ |
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private void addAndShow( AbstractEntry pEntry ) { |
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if ( add( pEntry ) && !showing() ) { |
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pEntry = getEntry(); |
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if ( pEntry != null ) |
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{ |
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if ( pEntry != null ) { |
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pEntry.show( this ); |
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} |
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} |
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} |
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@Override |
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public void onClose( CloseEvent<PopupPanel> event ) |
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{ |
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public void onClose( CloseEvent<PopupPanel> event ) { |
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AbstractEntry zEntry = nextEntry(); |
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if ( zEntry != null ) |
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{ |
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if ( zEntry != null ) { |
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zEntry.show( this ); |
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} |
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} |
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private synchronized boolean add( AbstractEntry pEntry ) |
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{ |
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private synchronized boolean add( AbstractEntry pEntry ) { |
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String zFrom = pEntry.getFrom(); |
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if ( mFromsInQueue.contains( zFrom ) ) |
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{ |
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if ( mFromsInQueue.contains( zFrom ) ) { |
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return false; |
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} |
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mFromsInQueue.add( zFrom ); |
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/** |
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* Will "manage" the mShowing flag |
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*/ |
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private synchronized boolean showing() |
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{ |
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private synchronized boolean showing() { |
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boolean rv = mShowing; |
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mShowing = true; |
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return rv; |
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/** |
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* Will "manage" the mShowing flag in conjunction w/ the mFromQueue |
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*/ |
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private synchronized AbstractEntry getEntry() |
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{ |
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if ( !mFromQueue.isEmpty() ) |
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{ |
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private synchronized AbstractEntry getEntry() { |
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if ( !mFromQueue.isEmpty() ) { |
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return mFromQueue.get( 0 ); |
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} |
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mShowing = false; |
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return null; |
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} |
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private synchronized AbstractEntry nextEntry() |
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{ |
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if ( !mFromQueue.isEmpty() ) |
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{ |
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private synchronized AbstractEntry nextEntry() { |
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if ( !mFromQueue.isEmpty() ) { |
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AbstractEntry entry = mFromQueue.remove( 0 ); |
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mFromsInQueue.remove( entry.getFrom() ); |
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} |
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return getEntry(); |
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} |
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protected abstract static class AbstractEntry |
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{ |
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protected abstract static class AbstractEntry { |
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private String mFrom; |
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protected String mTitle, mBody; |
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protected DialogCloseCallBack mCloseCallBack; |
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public AbstractEntry( String pFrom, String pTitle, String pBody, DialogCloseCallBack pCloseCallBack ) |
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{ |
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public AbstractEntry( String pFrom, String pTitle, String pBody, DialogCloseCallBack pCloseCallBack ) { |
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mFrom = pFrom; |
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mTitle = pTitle; |
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mBody = pBody; |
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mCloseCallBack = pCloseCallBack; |
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} |
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public String getFrom() |
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{ |
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public String getFrom() { |
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return mFrom; |
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} |
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public void show( CloseHandler<PopupPanel> pCloseHandler ) |
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{ |
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public void show( CloseHandler<PopupPanel> pCloseHandler ) { |
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final AbstractMessageDialog zDialog = create(); |
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zDialog.addCloseHandler( pCloseHandler ); |
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Scheduler.get().scheduleDeferred( new Command() |
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{ |
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Scheduler.get().scheduleDeferred( new Command() { |
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@Override |
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public void execute() |
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{ |
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public void execute() { |
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zDialog.show(); |
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} |
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} ); |
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abstract protected AbstractMessageDialog create(); |
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} |
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public static void prefetchImages() |
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{ |
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public static void prefetchImages() { |
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Image.prefetch( "common/images/misc/InfoIcon.gif" ); |
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Image.prefetch( "common/images/misc/ConfirmIcon.gif" ); |
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Image.prefetch( "common/images/misc/AlertError.gif" ); |
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