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/**
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* Copyright (C) 2018 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.vaadin.component;
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import java.util.ArrayList;
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import java.util.List;
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import com.vaadin.server.FontAwesome;
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import com.vaadin.server.Resource;
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import com.vaadin.ui.Button;
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import com.vaadin.ui.Component;
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import com.vaadin.ui.GridLayout;
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import com.vaadin.ui.themes.ValoTheme;
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import eu.etaxonomy.cdm.api.service.pager.Pager;
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/**
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* @author a.kohlbecker
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* @since Jul 3, 2018
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*
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*/
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public class PagerComponent extends GridLayout {
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private static final long serialVersionUID = 3097302030025769906L;
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// String viewStateTemplate;
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private PagerClickListener pagerClickListener;
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/**
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*
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* @param viewStateBase
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* template where <code>$1%d</code> is being used as placeholder
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* for the page index. E.g. <code>list/all/$1%d</code>
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*/
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public PagerComponent(PagerClickListener pagerClickListener){
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super(1, 1);
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this.pagerClickListener = pagerClickListener;
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// this.viewStateTemplate = viewStateTemplate;
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}
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public void updatePager(Pager<?> pager){
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List<Component> pagerComponents = new ArrayList<>();
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if(pager.getCurrentIndex() > 0){
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pagerComponents.add(pagerButton(0, null, FontAwesome.ANGLE_DOUBLE_LEFT));
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pagerComponents.add(pagerButton(pager.getCurrentIndex() - 1, null, FontAwesome.ANGLE_LEFT));
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}
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for(Integer index : pager.getIndices()){
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Button button = pagerButton(index, index.toString(), null);
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if(index.intValue() == pager.getCurrentIndex()){
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button.addStyleName(ValoTheme.BUTTON_BORDERLESS_COLORED);
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}
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pagerComponents.add(button);
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}
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if(pager.getCurrentIndex().intValue() != pager.getPagesAvailable()-1 ){
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pagerComponents.add(pagerButton(pager.getCurrentIndex() + 1, null, FontAwesome.ANGLE_RIGHT));
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pagerComponents.add(pagerButton(pager.getPagesAvailable() - 1, null, FontAwesome.ANGLE_DOUBLE_RIGHT));
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}
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Button rangeIndicator = new Button("[ " + pager.getFirstRecord() + " - " + pager.getLastRecord() + " / " + pager.getCount() + " ]");
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rangeIndicator.addStyleName(ValoTheme.BUTTON_BORDERLESS);
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rangeIndicator.setEnabled(false); // just a label
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pagerComponents.add(rangeIndicator);
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removeAllComponents();
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setColumns(pagerComponents.size() + 1);
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addComponents(pagerComponents.toArray(new Component[pagerComponents.size()]));
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}
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/**
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* @param i
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* @param string
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* @param backward
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* @return
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*/
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private Button pagerButton(int index, String caption, Resource icon) {
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Button b = new Button(caption, icon);
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b.addStyleName(ValoTheme.BUTTON_BORDERLESS);
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b.addClickListener(e -> pagerClickListener.pageIndexClicked(index));
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return b;
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}
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public interface PagerClickListener {
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public void pageIndexClicked(Integer index);
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}
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}
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