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

import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.client.widgets.nonpublic.*;
import org.litesoft.GWT.forms.client.components.nonpublic.*;
import org.litesoft.commonfoundation.base.*;
import org.litesoft.commonfoundation.html.*;
import org.litesoft.commonfoundation.typeutils.*;
import org.litesoft.ui.*;
import org.litesoft.uispecification.*;

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

public class FormCheckBox extends AbstractFocusWidgetFormElement {
    public FormCheckBox( String pFieldLabel, UiFont pLabelFont, String pTooltip, boolean pAlignWithStandardFormComponents ) {
        super( new MyCheckBox( pFieldLabel, pLabelFont ), "frmChkBox", false );
        initialize( pAlignWithStandardFormComponents ? " " : null, pLabelFont, pTooltip );
        mFieldLabel = pFieldLabel;
    }

    @Override
    protected void initialize( String pFieldLabel, UiFont pLabelFont, String pTooltip ) {
        super.initialize( pFieldLabel, pLabelFont, pTooltip );

        if ( null == ConstrainTo.significantOrNull( pTooltip ) ) {
            setVisible( mIndicatorTd.getElement(), false );
        }

        getCheckBox().addClickHandler( new ClickHandler() {
            @Override
            public void onClick( ClickEvent event ) {
                fireChangeListeners();
            }
        } );
    }

    // SizeManaged

    @Override
    public void relayout() {
        Widget parent = getParent();
        if ( parent instanceof SizeManaged ) {
            ((SizeManaged) parent).relayout();
        }
    }

    // IFormComponent

    @Override
    public Object getCurrentValue() {
        //noinspection UnnecessaryBoxing
        return Boolean.valueOf( isChecked() );
    }

    @Override
    public void setCurrentValue( Object pNewValue ) {
        if ( pNewValue != null ) {
            if ( !(pNewValue instanceof Boolean) ) {
                throw new IllegalArgumentException( "Not a Boolean: " + pNewValue );
            }
            setChecked( (Boolean) pNewValue );
        }
    }

    // Support...

    @Override
    public void simulateUserTextEntry( String pText ) {
        boolean zCurrentChecked = isChecked();
        setChecked( !Boolean.FALSE.equals( Booleans.fromString( pText ) ) );
        if ( zCurrentChecked != isChecked() ) {
            fireChangeListeners();
        }
        pullFocusTo( getCheckBox() );
    }

    public boolean isChecked() {
        return getCheckBox().getValue();
    }

    public void setChecked( boolean pChecked ) {
        getCheckBox().setValue( pChecked );
    }

    public CheckBox getCheckBox() {
        return (CheckBox) mInputWidget;
    }

    private static class MyCheckBox extends CheckBox implements IFocusWidget {
        public MyCheckBox( String pFieldLabel, UiFont pLabelFont ) {
            super( HTMLize( pFieldLabel ), true );
            if ( !"".equals( getText() ) ) {
                ApplyFont.to( pLabelFont, this );
            }
        }

        private static String HTMLize( String pFieldLabel ) {
            pFieldLabel = ConstrainTo.significantOrNull( pFieldLabel );
            return HTMLize.escapeNoWrap( pFieldLabel );
        }
    }
}