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.ui.pager;
021
022import com.google.gwt.dom.client.Document;
023import gwt.material.design.client.base.MaterialWidget;
024import gwt.material.design.client.base.constants.TableCssName;
025import gwt.material.design.client.ui.MaterialListValueBox;
026import gwt.material.design.client.ui.html.Span;
027
028/**
029 * Widget for building the page rows selection - where you can set the range of row count into listbox
030 *
031 * @author kevzlou7979
032 */
033public class PageRowSelection extends MaterialWidget {
034
035    private final MaterialDataPager pager;
036    protected Span rowsPerPageLabel = new Span("Rows per page");
037    protected MaterialListValueBox<Integer> listPageRows = new MaterialListValueBox<>();
038
039    public PageRowSelection(MaterialDataPager pager) {
040        super(Document.get().createDivElement(), TableCssName.ROWS_PER_PAGE_PANEL);
041        this.pager = pager;
042    }
043
044    @Override
045    protected void onLoad() {
046        super.onLoad();
047
048        setGrid("s12 m4 l3");
049
050        add(listPageRows);
051        add(rowsPerPageLabel);
052
053        listPageRows.clear();
054        for (int limitOption : pager.getLimitOptions()) {
055            listPageRows.addItem(limitOption, true);
056        }
057        registerHandler(listPageRows.addValueChangeHandler(valueChangeEvent -> {
058            pager.setLimit(valueChangeEvent.getValue());
059            pager.updateRowsPerPage(valueChangeEvent.getValue());
060        }));
061    }
062}