com.qualogy.qafe.gwt.client.component.QCheckBox.java Source code

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Here is the source code for com.qualogy.qafe.gwt.client.component.QCheckBox.java

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/**
 * Copyright 2008-2015 Qualogy Solutions B.V.
 *
 * 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.qualogy.qafe.gwt.client.component;

import com.google.gwt.dom.client.InputElement;
import com.google.gwt.dom.client.LabelElement;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.DirectionalTextHelper;

public class QCheckBox extends CheckBox implements HasEditable {

    private static final String DISPLAYNAME_POSITION_LEFT = "left";

    private DirectionalTextHelper directionalTextHelper;
    private InputElement inputElem;
    private LabelElement labelElem;

    public QCheckBox(Element elem, String displaynamePosition) {
        inputElem = (InputElement) this.getElement().getChild(0);
        labelElem = (LabelElement) this.getElement().getChild(1);
        if (displaynamePosition.equals(DISPLAYNAME_POSITION_LEFT)) {
            getElement().appendChild(labelElem);
            getElement().appendChild(inputElem);
        } else {
            getElement().appendChild(inputElem);
            getElement().appendChild(labelElem);
        }
        String uid = DOM.createUniqueId();
        inputElem.setPropertyString("id", uid);
        labelElem.setHtmlFor(uid);
        directionalTextHelper = new DirectionalTextHelper(labelElem, true);

        // Accessibility: setting tab index to be 0 by default, ensuring element
        // appears in tab sequence. FocusWidget's setElement method already
        // calls setTabIndex, which is overridden below. However, at the time
        // that this call is made, inputElem has not been created. So, we have
        // to call setTabIndex again, once inputElem has been created.
        setTabIndex(0);
    }

    public boolean isEditable() {
        return isEnabled();
    }

    public void setEditable(boolean editable) {
        setEnabled(editable);
    }
}