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

import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.client.widgets.nonpublic.*;
import org.litesoft.ui.*;

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

public class AbstractFormContainer extends Composite implements ISizeableWidget
{
    protected final FormContainerErrorPanel mErrorPanel = new FormContainerErrorPanel();
    private final ResizeHelper mResizeHelper = new MyResizeHelper();
    private AbstractSizeableVerticalRegularPanel mOuterPanel;
    private String mPendingWidth = null;
    private String mPendingHeight = null;
    private static final String STYLE = "litesoft-OuterBox";

    public AbstractFormContainer( AbstractSizeableVerticalRegularPanel pOuterPanel, ISizeableWidget pWidget )
    {
        (mOuterPanel = pOuterPanel).addStyleName( STYLE );
        initWidget( mOuterPanel );

        mOuterPanel.add( (Widget) pWidget );
        mOuterPanel.add( mErrorPanel );

        if ( pWidget.getWidthHelper().isStretchable() )
        {
            mOuterPanel.LLstretchableHorizontally();
        }
        if ( pWidget.getHeightHelper().isStretchable() )
        {
            mOuterPanel.LLstretchableVertically();
        }
    }

    @Override
    public ISizeableDimensionHelper getWidthHelper()
    {
        return mOuterPanel.getWidthHelper();
    }

    @Override
    public ISizeableDimensionHelper getHeightHelper()
    {
        return mOuterPanel.getHeightHelper();
    }

    @Override
    public void relayout()
    {
        Widget parent = getParent();
        if ( parent instanceof SizeManaged )
        {
            ((SizeManaged) parent).relayout();
        }
        else
        {
            setWidth( "" + getOffsetWidth() );
            setHeight( "" + getOffsetHeight() );
        }
    }

    @Override
    public void setWidth( String width )
    {
        mPendingWidth = width;
        mResizeHelper.onResized();
    }

    @Override
    public void setHeight( String height )
    {
        mPendingHeight = height;
        mResizeHelper.onResized();
    }

    /**
     * Not supported
     *
     * @throws UnsupportedOperationException
     */
    @Override
    public void setTitle( String title )
            throws UnsupportedOperationException
    {
        throw new UnsupportedOperationException();
    }

    public void setError( String pError )
    {
        mErrorPanel.setError( pError );
    }

    public void setWarning( String pWarning )
    {
        mErrorPanel.setWarning( pWarning );
    }

    public void clearErrorOrWarning()
    {
        mErrorPanel.clearErrorOrWarning();
    }

    private class MyResizeHelper extends ResizeHelper
    {
        public MyResizeHelper()
        {
            super( 666 );
        }

        @Override
        protected void doResize()
        {
            if ( mPendingWidth != null )
            {
                mOuterPanel.setWidth( mPendingWidth );
                mPendingWidth = null;
            }
            if ( mPendingHeight != null )
            {
                mOuterPanel.setHeight( mPendingHeight );
                mPendingHeight = null;
            }
        }
    }
}