com.agnie.gwt.common.client.widget.ListBox.java Source code

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Here is the source code for com.agnie.gwt.common.client.widget.ListBox.java

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/*******************************************************************************
 * Copyright (c) 2014 Agnie Technologies.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Agnie Technologies - initial API and implementation
 ******************************************************************************/
/**
 * 
 */
package com.agnie.gwt.common.client.widget;

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

import com.google.gwt.core.shared.GWT;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.dom.client.OptionElement;
import com.google.gwt.dom.client.SelectElement;

/**
 * 
 */
public class ListBox<T> extends com.google.gwt.user.client.ui.ListBox {

    private List<T> list;
    private GetText<T> gt;

    public ListBox(boolean isMultipleSelect, GetText<T> gt) {
        super(isMultipleSelect);
        this.gt = gt;
    }

    /**
     * Removes all items from the list box.
     */
    public void clear() {
        super.clear();
        if ((list != null) && !(list.isEmpty())) {
            this.list.clear();
        }
    }

    /**
     * To set ListItem Label as it's Title(tooltip) for each ListItem.
     */
    private void setTitle() {
        SelectElement selectElement = SelectElement.as(this.getElement());
        NodeList<OptionElement> options = selectElement.getOptions();
        for (int i = 0; i < options.getLength(); i++) {
            T t = this.list.get(i);
            options.getItem(i).setTitle(gt.getText(t));
        }
    }

    public ListBox(boolean isMultipleSelect) {
        super(isMultipleSelect);
    }

    public ListBox(GetText<T> gt) {
        super(false);
        this.gt = gt;
    }

    public void setGetText(GetText<T> gt) {
        this.gt = gt;
    }

    public void setRowData(List<T> list) {
        clear();
        this.list = list;
        for (int index = 0; index < this.list.size(); index++) {
            T t = this.list.get(index);
            addItem(gt.getText(t));
        }
        this.setTitle();
    }

    public void addRowData(List<T> newdata) {
        list.addAll(newdata);
        for (int index = 0; index < newdata.size(); index++) {
            T t = newdata.get(index);
            addItem(gt.getText(t));
        }
        this.setTitle();
    }

    public List<T> moveSelectedItems() {
        List<T> remaining = new ArrayList<T>();
        List<T> selected = new ArrayList<T>();
        for (int index = 0; index < list.size(); index++) {
            if (isItemSelected(index)) {
                GWT.log("selected item== " + list.get(index));
                selected.add(list.get(index));
            } else {
                remaining.add(list.get(index));
            }
        }
        setRowData(remaining);
        return selected;
    }

    public List<T> getList() {
        return list;
    }

    public interface GetText<T> {
        String getText(T object);
    }

    public T getSelected() {
        return list.get(getSelectedIndex());
    }

}