org.cruxframework.crux.smartfaces.client.progress.Progress.java Source code

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Here is the source code for org.cruxframework.crux.smartfaces.client.progress.Progress.java

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/*
 * Copyright 2014 cruxframework.org.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * 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.cruxframework.crux.smartfaces.client.progress;

import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.PartialSupport;
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.user.client.ui.HasValue;
import com.google.gwt.user.client.ui.Widget;

/**
 * @author Thiago da Rosa de Bustamante
 *
 */
@PartialSupport
public class Progress extends Widget implements HasValue<Integer> {
    private static Boolean supported = null;
    public static final String DEFAULT_STYLE_NAME = "faces-Progress";

    protected Progress() {
        setElement(Document.get().createElement("progress"));
        setStyleName(DEFAULT_STYLE_NAME);
    }

    public void setMax(int maxValue) {
        getElement().setPropertyInt("max", maxValue);
    }

    public int getMax() {
        return getElement().getPropertyInt("max");
    }

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

    @Override
    public Integer getValue() {
        return getElement().getPropertyInt("value");
    }

    @Override
    public void setValue(Integer value) {
        setValue(value, false);
    }

    public double getPosition() {
        return getElement().getPropertyDouble("position");
    }

    @Override
    public void setValue(Integer value, boolean fireEvents) {
        if (fireEvents) {
            Integer oldValue = getValue();
            ValueChangeEvent.fireIfNotEqual(this, oldValue, value);
            getElement().setPropertyInt("value", (value != null ? value : 0));
        } else {
            getElement().setPropertyInt("value", (value != null ? value : 0));
        }
    }

    public static Progress createIfSupported() {
        if (isSupported()) {
            return new Progress();
        }
        return null;
    }

    public static boolean isSupported() {
        if (supported == null) {
            supported = supportDetection();
        }
        return (supported);
    }

    private static native boolean supportDetection()/*-{
                                                    return ($doc.createElement('progress').max !== undefined);   
                                                    }-*/;
}