org.openremote.modeler.client.gxtextends.CheckBoxListViewExt.java Source code

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Here is the source code for org.openremote.modeler.client.gxtextends.CheckBoxListViewExt.java

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/* OpenRemote, the Home of the Digital Home.
* Copyright 2008-2012, OpenRemote Inc.
*
* See the contributors.txt file in the distribution for a
* full listing of individual contributors.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.openremote.modeler.client.gxtextends;

import java.util.ArrayList;
import java.util.List;

import com.extjs.gxt.ui.client.GXT;
import com.extjs.gxt.ui.client.core.XTemplate;
import com.extjs.gxt.ui.client.data.ModelData;
import com.extjs.gxt.ui.client.widget.ListView;
import com.google.gwt.dom.client.InputElement;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.user.client.Element;

/**
 * Rewrite the CheckBoxListView, support to click the label and check the input, just modified the OnRender method.
 */
public class CheckBoxListViewExt<M extends ModelData> extends ListView<M> {
    private String checkBoxSelector = ".x-view-item-checkbox";
    protected List<M> checkedPreRender;

    public String getCheckBoxSelector() {
        return checkBoxSelector;
    }

    public List<M> getChecked() {
        List<M> l = new ArrayList<M>();
        NodeList<Element> nodes = el().select(checkBoxSelector);
        for (int i = 0; i < nodes.getLength(); i++) {
            InputElement e = nodes.getItem(i).cast();
            if (e.isChecked()) {
                l.add(getStore().getAt(i));
            }
        }
        return l;
    }

    public void setCheckBoxSelector(String checkBoxSelector) {
        this.checkBoxSelector = checkBoxSelector;
    }

    /**
     * Selects a specific item in the view
     * 
     * @param m the modeldata that should be checked
     * @param checked true to check
     */
    public void setChecked(M m, boolean checked) {
        if (rendered) {
            NodeList<Element> nodes = el().select(checkBoxSelector);
            int index = store.indexOf(m);
            if (index != -1) {
                Element e = nodes.getItem(index);
                if (e != null) {
                    ((InputElement) e.cast()).setChecked(checked);
                }
            }
        } else {
            if (checkedPreRender == null) {
                checkedPreRender = new ArrayList<M>();
            }
            if (checked) {
                if (!checkedPreRender.contains(m)) {
                    checkedPreRender.add(m);
                }
            } else {
                checkedPreRender.remove(m);
            }
        }
    }

    protected void onRender(Element target, int index) {
        if (getTemplate() == null) {
            String spacing = GXT.isIE ? "0" : "3";
            String displayProperty = getDisplayProperty();
            setTemplate(XTemplate.create(
                    "<tpl for=\".\"><div class='x-view-item x-view-item-check'><table cellspacing='" + spacing
                            + "' cellpadding=0><tr><td><input class=\"x-view-item-checkbox\" type=\"checkbox\" id=\"{"
                            + displayProperty + "}\"/></td><td><td><label for=\"{" + displayProperty + "}\">{"
                            + displayProperty + "}</label></td></tr></table></div></tpl>"));
        }
        super.onRender(target, index);
        if (checkedPreRender != null) {
            for (M m : checkedPreRender) {
                setChecked(m, true);
            }
            checkedPreRender = null;
        }
    }
}