org.jrydberg.ui.client.PopupButton.java Source code

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Here is the source code for org.jrydberg.ui.client.PopupButton.java

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/**
 * Copyright 2010 Johan Rydberg
 *
 * 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.jrydberg.ui.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.resources.client.ClientBundle;
import com.google.gwt.resources.client.CssResource;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.Image;

/**
 * @author jrydberg
 * 
 */
public class PopupButton extends Button {

    public interface Css extends CssResource {
        String button();

        String text();

        String right();

    }

    public interface Resources extends ClientBundle {
        @Source("resources/PopupButton.css")
        Css popupButtonCss();

        @Source("resources/PopupButton-arrows.png")
        ImageResource popupButtonArrows();
    }

    private static Resources DEFAULT_RESOURCES;

    private Css style;

    private Element textElement;

    private static Resources getDefaultResources() {
        if (DEFAULT_RESOURCES == null) {
            DEFAULT_RESOURCES = GWT.<Resources>create(Resources.class);
        }
        return DEFAULT_RESOURCES;
    }

    public PopupButton() {
        this(getDefaultResources());
    }

    public PopupButton(String text) {
        this(getDefaultResources(), text);
    }

    public PopupButton(Resources resources, String text) {
        this(resources);
        setText(text);
    }

    public PopupButton(Resources resources) {
        this.style = resources.popupButtonCss();
        style.ensureInjected();
        setStyleName(style.button());
        // Create layout of the widget:
        textElement = DOM.createSpan();
        textElement.setClassName(style.text());
        getElement().appendChild(textElement);
        // Add the image to the right:
        Element rightElement = DOM.createDiv();
        rightElement.setClassName(style.right());
        rightElement.appendChild(new Image(resources.popupButtonArrows()).getElement());
        getElement().appendChild(rightElement);
    }

    @Override
    public void setText(String text) {
        textElement.setInnerText(text);
    }

    @Override
    public String getText() {
        return textElement.getInnerText();
    }

}