org.guvnor.client.widgets.Toggle.java Source code

Introduction

Here is the source code for org.guvnor.client.widgets.Toggle.java

Source

/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

package org.guvnor.client.widgets;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.logical.shared.HasValueChangeHandlers;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.resources.client.CssResource;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Widget;
import org.gwtbootstrap3.client.ui.Button;

public class Toggle extends Composite implements HasValueChangeHandlers<Boolean> {

    @Override
    public HandlerRegistration addValueChangeHandler(ValueChangeHandler<Boolean> handler) {
        return addHandler(handler, ValueChangeEvent.getType());
    }

    interface Style extends CssResource {

        String red();

        String blue();

    }

    interface Binder extends UiBinder<Widget, Toggle> {

    }

    private static Binder uiBinder = GWT.create(Binder.class);

    @UiField
    Style style;

    @UiField
    Button on;

    @UiField
    Button off;

    public Toggle() {
        initWidget(uiBinder.createAndBindUi(this));
    }

    /**
     * @param enabled If true, first option is selected
     */
    public void setValue(boolean enabled) {
        if (enabled) {
            makeActive(on, style.blue());
            reset(off);
        } else {
            makeActive(off, style.red());
            reset(on);
        }
    }

    private void reset(Button button) {
        button.setActive(false);
        button.removeStyleName(style.red());
        button.removeStyleName(style.blue());
    }

    private void makeActive(Button button, String style1) {
        button.setActive(true);
        button.addStyleName(style1);
    }

    @UiHandler("on")
    public void onOnClick(ClickEvent e) {
        setValue(true);
        ValueChangeEvent.fire(this, true);
    }

    @UiHandler("off")
    public void onOffClick(ClickEvent e) {
        setValue(false);
        ValueChangeEvent.fire(this, false);
    }
}