com.google.gwt.widgetideas.client.VolumeSlider.java Source code

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Here is the source code for com.google.gwt.widgetideas.client.VolumeSlider.java

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/*
 * Copyright 2008 Google Inc.
 * 
 * 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 com.google.gwt.widgetideas.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.ui.AbstractImagePrototype;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.widgetideas.client.Spinner.SpinnerResources;

/**
 * {@link VolumeSlider} widget combines a {@link ProgressBar} with a
 * {@link Spinner}.
 */
public class VolumeSlider extends Composite {
    /**
     * Default {@link VolumeSlider} images.
     */
    public interface VolumeSliderButtons extends SpinnerResources {
        @Resource("arrowLeft.png")
        AbstractImagePrototype arrowDown();

        @Resource("arrowLeftDisabled.png")
        AbstractImagePrototype arrowDownDisabled();

        @Resource("arrowLeftHover.png")
        AbstractImagePrototype arrowDownHover();

        @Resource("arrowLeftPressed.png")
        AbstractImagePrototype arrowDownPressed();

        @Resource("arrowRight.png")
        AbstractImagePrototype arrowUp();

        @Resource("arrowRightDisabled.png")
        AbstractImagePrototype arrowUpDisabled();

        @Resource("arrowRightHover.png")
        AbstractImagePrototype arrowUpHover();

        @Resource("arrowRightPressed.png")
        AbstractImagePrototype arrowUpPressed();
    }

    private Spinner spinner;
    private ProgressBar progressBar;

    private SpinnerListener listener = new SpinnerListener() {
        public void onSpinning(long value) {
            progressBar.setProgress(value);
        }
    };

    /**
     * @param value initial value
     * @param min min value
     * @param max max value
     */
    public VolumeSlider(long value, long min, long max) {
        this(value, min, max, (VolumeSliderButtons) GWT.create(VolumeSliderButtons.class));
    }

    /**
     * @param value initial value
     * @param min min value
     * @param max max value
     * @param resources the images used for the spinner
     */
    public VolumeSlider(long value, long min, long max, SpinnerResources resources) {
        HorizontalPanel horizontalPanel = new HorizontalPanel();
        horizontalPanel.setStyleName("gwt-VolumeSlider");
        horizontalPanel.setVerticalAlignment(HorizontalPanel.ALIGN_MIDDLE);
        progressBar = new ProgressBar(min, max, value);
        spinner = new Spinner(listener, value, min, max, 1, 5, true, resources);
        SimplePanel leftPanel = new SimplePanel();
        leftPanel.add(spinner.getDecrementArrow());
        leftPanel.setStyleName("decreaseArrow");
        horizontalPanel.add(leftPanel);
        horizontalPanel.add(progressBar);
        progressBar.setWidth("100%");
        horizontalPanel.setCellWidth(progressBar, "100%");
        SimplePanel rightPanel = new SimplePanel();
        rightPanel.add(spinner.getIncrementArrow());
        rightPanel.setStyleName("increaseArrow");
        horizontalPanel.add(rightPanel);
        initWidget(horizontalPanel);
    }

    /**
     * @return the progress bar
     */
    public ProgressBar getProgressBar() {
        return progressBar;
    }

    /**
     * @return the spinner
     */
    public Spinner getSpinner() {
        return spinner;
    }

    /**
     * @return Gets whether this widget is enabled
     */
    public boolean isEnabled() {
        return spinner.isEnabled();
    }

    /**
     * Sets whether this widget is enabled.
     * 
     * @param enabled true to enable the widget, false to disable it
     */
    public void setEnabled(boolean enabled) {
        spinner.setEnabled(enabled);
    }
}