package com.temp.client.foundation.widget.input.support;

import com.google.gwt.event.dom.client.*;
import com.google.gwt.event.logical.shared.*;
import com.google.gwt.event.shared.*;
import com.google.gwt.user.client.ui.*;
import com.temp.client.foundation.widget.input.fieldsupport.*;
import com.temp.client.foundation.widget.input.support.events.*;
import com.temp.shared.utils.*;

public class CheckBoxValueAdapter implements InputWidgetValueAdapter<Boolean> {

    private final CheckBox inputWidget;

    private final NonDomChangeEvent changeEvent = new NonDomChangeEvent( this );

    public CheckBoxValueAdapter( CheckBox inputWidget ) {
        Validate.notNull( "inputWidget", this.inputWidget = inputWidget );
    }

    @Override
    public HandlerRegistration addChangeHandler( final ChangeHandler handler ) {
        return inputWidget.addValueChangeHandler( new ValueChangeHandler<Boolean>() {
            @Override
            public void onValueChange( ValueChangeEvent<Boolean> booleanValueChangeEvent ) {
                changeEvent.dispatch( handler );
            }
        } );
    }

    @Override
    public Boolean getValue() {
        return ObjectUtils.deNull( inputWidget.getValue(), Boolean.FALSE );
    }

    @Override
    public void setValue( Boolean value ) {
        inputWidget.setValue( ObjectUtils.deNull( value, Boolean.FALSE ) );
    }
}