package org.litesoft.GWT.client.widgets;

import java.util.*;

import com.google.gwt.user.client.*;
import com.google.gwt.user.client.ui.*;
import org.litesoft.GWT.client.*;
import org.litesoft.GWT.client.commands.*;
import org.litesoft.GWT.client.widgets.nonpublic.*;

public class ContextMenuPopup extends AbstractContextPopup
{
    public ContextMenuPopup()
    {
        super( true );
    }

    public ContextMenuPopup( PopupListener pListener )
    {
        this();
        if ( pListener != null )
        {
            addPopupListener( pListener );
        }
    }

    public ContextMenuPopup( IMenuableDef[] pMenuables )
    {
        this( pMenuables, null );
    }

    public ContextMenuPopup( IMenuableDef[] pMenuables, PopupListener pListener )
    {
        this( pListener );
        setMenuables( pMenuables );
    }

    public void setMenuables( final IMenuableDef[] pMenuables )
    {
        UtilsGwt.assertNotNull( "IMenuableDefs", pMenuables );

        boolean hasIconURL = false;
        final List zCmds = new ArrayList();
        for ( int i = 0; i < pMenuables.length; i++ )
        {
            IMenuableDef zDef = pMenuables[i];
            if ( zDef != null )
            {
                IconTextCommand zCmd;
                if ( zDef instanceof IconTextCommand )
                {
                    zCmd = (IconTextCommand) zDef;
                }
                else if ( zDef instanceof TextCommand )
                {
                    zCmd = new CMTCproxy( (TextCommand) zDef );
                }
                else
                {
                    continue;
                }
                hasIconURL |= zCmd.hasIconURL();
                zCmds.add( zCmd );
            }
        }
        if ( zCmds.isEmpty() )
        {
            throw new IllegalArgumentException( "No MenuableDefs provided" );
        }
        mGrid = new TightGrid( zCmds.size(), hasIconURL ? 2 : 1 );
        for ( int i = 0; i < zCmds.size(); i++ )
        {
            IconTextCommand zCmd = (IconTextCommand) zCmds.get( i );

            int col = 0;
            if ( hasIconURL )
            {
                String url = zCmd.getIconURL();
                Image icon = new Image( url );
                mGrid.setWidget( i, col++, icon );
            }
            Label txtLabel = new Label( zCmd.getText() );
            mGrid.setWidget( i, col, txtLabel );
        }
        mGrid.setOnBrowserEventListener( Event.MOUSEEVENTS, new OnBrowserEventListener()
        {
            public boolean onBrowserEvent( Event event )
            {
                switch ( DOM.eventGetType( event ) )
                {
                    case Event.ONMOUSEUP:
                        UtilsGwt.eventPreventDefaultAndCancelBubble( event );

                        // todo...

                    case Event.ONMOUSEOVER:
                    case Event.ONMOUSEOUT:
                    case Event.ONMOUSEDOWN:
                    case Event.ONMOUSEMOVE:
                    default:
                        break;
                }
                return false;
            }
        } );
        mGrid.addTableListener( new TableListener()
        {
            public void onCellClicked( SourcesTableEvents sender, int row, int cell )
            {
                DeferredCommand.addCommand( (Command) zCmds.get( row ) );
                hide();
            }
        } );
    }

    private TightGrid mGrid = null;

    protected Widget createPopupWidget()
    {
        return mGrid;
    }

    private static class CMTCproxy extends IconTextCommand
    {
        private TextCommand mTextCommand;

        public CMTCproxy( TextCommand pTextCommand )
        {
            super( null, pTextCommand.getText() );
            mTextCommand = pTextCommand;
        }

        public void enabledExecute()
        {
            mTextCommand.enabledExecute();
        }
    }
}