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// This Source Code is in the Public Domain per: http://litesoft.org/License.txt package org.litesoft.GWT.client.nonpublic; import java.util.*; import org.litesoft.GWT.client.*; import com.google.gwt.user.client.*; import com.google.gwt.user.client.ui.*; public class AbstractPopupManager implements PopupListener // todo: GWT 1.6 { protected static void show( AbstractEntry pEntry ) { INSTANCE.addAndShow( pEntry ); } private static final AbstractPopupManager INSTANCE = new AbstractPopupManager(); private void addAndShow( AbstractEntry pEntry ) { if ( add( pEntry ) && !showing() ) { pEntry = getEntry(); if ( pEntry != null ) { pEntry.show( this ); } } } @Override public void onPopupClosed( PopupPanel sender, boolean autoClosed ) { AbstractEntry zEntry = nextEntry(); if ( zEntry != null ) { zEntry.show( this ); } } private synchronized boolean add( AbstractEntry pEntry ) { String zFrom = pEntry.getFrom(); if ( mFromsInQueue.contains( zFrom ) ) { return false; } mFromsInQueue.add( zFrom ); mFromQueue.add( pEntry ); return true; } private boolean mShowing = false; private List<AbstractEntry> mFromQueue = new ArrayList<AbstractEntry>(); private Set<String> mFromsInQueue = new HashSet<String>(); /** * Will "manage" the mShowing flag */ private synchronized boolean showing() { boolean rv = mShowing; mShowing = true; return rv; } /** * Will "manage" the mShowing flag in conjunction w/ the mFromQueue */ private synchronized AbstractEntry getEntry() { if ( !mFromQueue.isEmpty() ) { return mFromQueue.get( 0 ); } mShowing = false; return null; } private synchronized AbstractEntry nextEntry() { if ( !mFromQueue.isEmpty() ) { AbstractEntry entry = mFromQueue.remove( 0 ); mFromsInQueue.remove( entry.getFrom() ); } return getEntry(); } protected abstract static class AbstractEntry { private String mFrom; protected String mTitle, mBody; protected DialogCloseCallBack mCloseCallBack; public AbstractEntry( String pFrom, String pTitle, String pBody, DialogCloseCallBack pCloseCallBack ) { mFrom = pFrom; mTitle = pTitle; mBody = pBody; mCloseCallBack = pCloseCallBack; } public String getFrom() { return mFrom; } public void show( PopupListener pPopupListener ) { final AbstractMessageDialog zDialog = create(); zDialog.addPopupListener( pPopupListener ); DeferredCommand.add( new Command() { @Override public void execute() { zDialog.show(); } } ); } abstract protected AbstractMessageDialog create(); } public static void prefetchImages() { Image.prefetch( "common/images/misc/InfoIcon.cache.gif" ); Image.prefetch( "common/images/misc/ConfirmIcon.cache.gif" ); Image.prefetch( "common/images/misc/AlertError.cache.gif" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowTopLeft.cache.png" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowUpStraight.cache.png" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowTopRight.cache.png" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowLeftStraight.cache.png" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowRightStraight.cache.png" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowBottomLeft.cache.png" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowDownStraight.cache.png" ); Image.prefetch( "common/images/misc/dialogShadow/ShadowBottomRight.cache.png" ); // Both LnFs are prefetched, need to only load once per theme Image.prefetch( "lnf/classic/Dialog/CornerBottomLeft.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerBottomLeftDown.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerBottomLeftUp.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerBottomRight.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerBottomRightDown.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerBottomRightUp.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerTopLeft.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerTopLeftDown.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerTopLeftUp.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerTopRight.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerTopRightDown.cache.png" ); Image.prefetch( "lnf/classic/Dialog/CornerTopRightUp.cache.png" ); Image.prefetch( "lnf/classic/Dialog/StraightBottom.cache.png" ); Image.prefetch( "lnf/classic/Dialog/StraightLeftCaption.cache.png" ); Image.prefetch( "lnf/classic/Dialog/StraightLeftContent.cache.png" ); Image.prefetch( "lnf/classic/Dialog/StraightRightCaption.cache.png" ); Image.prefetch( "lnf/classic/Dialog/StraightRightContent.cache.png" ); Image.prefetch( "lnf/classic/Dialog/StraightTop.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerBottomLeft.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerBottomLeftDown.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerBottomLeftUp.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerBottomRight.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerBottomRightDown.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerBottomRightUp.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerTopLeft.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerTopLeftDown.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerTopLeftUp.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerTopRight.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerTopRightDown.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/CornerTopRightUp.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/StraightBottom.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/StraightLeftCaption.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/StraightLeftContent.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/StraightRightCaption.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/StraightRightContent.cache.png" ); Image.prefetch( "lnf/classic_rounded/Dialog/StraightTop.cache.png" ); } } |