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

import org.litesoft.GWT.client.*;
import org.litesoft.GWT.client.nonpublic.*;
import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.client.widgets.SubmitButton;
import org.litesoft.commonfoundation.base.*;
import org.litesoft.commonfoundation.html.*;

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

public abstract class DialogView extends UiView implements DialogCloseCallBack,
                                                           Dialog {
    private Opaqueness mOpaqueness;
    private DialogError mErrorLabel = new DialogError();

    public DialogView( CO pCO, Opaqueness pOpaqueness ) {
        super( pCO );
        mOpaqueness = pOpaqueness;
    }

    public boolean isCancelable() {
        return true;
    }

    public SizeableLabel getErrorLabel() {
        return mErrorLabel;
    }

    public void setDialogErrorMessage( String pError ) {
        boolean zEmpty = (null == (pError = ConstrainTo.significantOrNull( pError )));
        mErrorLabel.setText( !zEmpty ? pError : HtmlEntity.NBSP, zEmpty );
    }

    protected void add( Widget pWidget ) {
        mContent.add( pWidget );
    }

    @Override
    public Widget getContent() {
        return mContent;
    }

    @Override
    public void dialogClosed() {
    }

    public void cancel() {
        close();
    }

    public void close() {
        if ( mDialog != null ) {
            mDialog.hide();
            mDialog = null;
        }
    }

    private AbstractDialog mDialog = null;

    public void setActualDialog( AbstractDialog pDialog ) {
        mDialog = pDialog;
    }

    public AbstractDialog getActualDialog() {
        return mDialog;
    }

    public Opaqueness getOpaqueness() {
        return mOpaqueness;
    }

    protected void submitRequested() {
    }

    protected ButtonBase createSubmitButton() {
        return SubmitButton.factory().add( createSubmitClickHandler() ).create();
    }

    protected final ClickHandler createSubmitClickHandler() {
        return new ClickHandler() {
            @Override
            public void onClick( ClickEvent event ) {
                submitRequested();
            }
        };
    }

    protected final ButtonBase createCancelButton() {
        return CancelButton.factory().add( new ClickHandler() {
            @Override
            public void onClick( ClickEvent event ) {
                cancel();
            }
        } ).create();
    }

    protected final ButtonBase createCloseButton() {
        return CloseButton.factory().add( new ClickHandler() {
            @Override
            public void onClick( ClickEvent event ) {
                cancel();
            }
        } ).create();
    }
}