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.mixin;
021
022import com.google.gwt.dom.client.Element;
023import com.google.gwt.user.client.ui.UIObject;
024import gwt.material.design.client.base.HasCounter;
025import gwt.material.design.client.ui.MaterialValueBox;
026
027import static gwt.material.design.client.js.JsMaterialElement.$;
028
029public class CounterMixin<T extends UIObject & HasCounter> extends AbstractMixin<T> implements HasCounter {
030
031    private int length = 0;
032
033    public CounterMixin(final T widget) {
034        super(widget);
035    }
036
037    @Override
038    public void setLength(int length) {
039        this.length = length;
040        Element e = uiObject.getElement();
041
042        if (uiObject instanceof MaterialValueBox) {
043            e = ((MaterialValueBox) uiObject).asValueBoxBase().getElement();
044        }
045
046        if (e != null) {
047            e.setAttribute("length", String.valueOf(length));
048            initialize(e);
049        }
050    }
051
052    @Override
053    public int getLength() {
054        return length;
055    }
056
057    /**
058     * Initialize the character counter provided by the textbase elements
059     *
060     * @param e - element to initialize the feature
061     */
062    protected void initialize(Element e) {
063        $(e).characterCounter();
064    }
065}