001/*
002 * #%L
003 * GwtMaterial
004 * %%
005 * Copyright (C) 2015 - 2017 GwtMaterialDesign
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 * 
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 * 
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package gwt.material.design.client.base;
021
022import com.google.gwt.user.client.ui.IsWidget;
023import com.google.gwt.user.client.ui.Widget;
024import gwt.material.design.client.js.JsMaterialElement;
025
026public class Waves {
027
028    public static final String WAVES_STYLE = "waves-effect";
029
030    /**
031     * Initialize any uninitialized wave elements.
032     */
033    public static void detectAndApply() {
034        JsMaterialElement.displayEffect();
035    }
036
037    /**
038     * Detect and apply waves, now or when the widget is attached.
039     *
040     * @param widget target widget to ensure is attached first
041     */
042    public static void detectAndApply(Widget widget) {
043        if (!widget.isAttached()) {
044            widget.addAttachHandler(event -> {
045                if (event.isAttached()) {
046                    detectAndApply();
047                }
048            });
049        } else {
050            detectAndApply();
051        }
052    }
053
054    public static void detectAndApply(IsWidget isWidget) {
055        detectAndApply(isWidget.asWidget());
056    }
057}