// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.GWT.forms.client.components.nonpublic;

import org.litesoft.core.simpletypes.*;
import org.litesoft.core.util.*;

import com.google.gwt.user.client.*;
import com.google.gwt.user.client.ui.*;

public class PopupPanelVisiblePositionCallBack implements PopupPanel.PositionCallback
{
    private PopupPanel mPopupPanel;
    private int mDesiredXpos;
    private int mDesiredYpos;

    public PopupPanelVisiblePositionCallBack( PopupPanel pPopupPanel, int pDesiredXpos, int pDesiredYpos )
    {
        mPopupPanel = pPopupPanel;
        mDesiredXpos = pDesiredXpos;
        mDesiredYpos = pDesiredYpos;
    }

    @Override
    public void setPosition( int pPopupXsize, int pPopupYsize )
    {
        Rect zPopupRect = new Rect( mDesiredXpos, mDesiredYpos, pPopupXsize, pPopupYsize );
        Rect zWindowRect = new Rect( 0, 0, Window.getClientWidth(), Window.getClientHeight() );

        PointXY zPoint = LeftRightAndUpDownRectContainmentStrategy.INSTANCE.moveToFitIn( zPopupRect, zWindowRect );

        int zX = (zPoint != null) ? zPoint.getX() : mDesiredXpos;
        int zY = (zPoint != null) ? zPoint.getY() : mDesiredYpos;
        mPopupPanel.setPopupPosition( zX, zY );
    }
}