Suggested case list:
Using timer to refresh a grid
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index.zulzul<zk>
<style>
.rod-top-spinner, .rod-top-spinner:before {
background-image:url('./progress.gif');
background-repeat:repeat-y;
}
.rod-top-spinner {
background-position:center bottom;
margin-bottom: 15px;
}
.rod-top-spinner:before {
display: block;
content:"";
width: 100%;
height: 50px;
background-position:center;
}
</style>
<script>
<![CDATA[
function scrollTop(uuid) {
var body = _getBody(uuid);
if (body) body.scrollTop(0)
};
function setTextboxValue(uuid,value){
var textBox = zk.$(uuid);
textBox.setValue(value);
textBox.fireOnChange();
};
function _getBody(uuid) {
var grid = $('#' + uuid);
if (grid) return grid.find('.z-grid-body');
};
function meshRodStylesInit(wgt) {
var wgt = zk.$(wgtSelector);
if (!wgt) return;
wgt._initPadSizes();
if (wgt._subnodes.tpad) {
wgt._subnodes.tpad.classList.add('rod-top-spinner');
wgt._subnodes.tpad.style.width = "100%";
}
if (wgt._subnodes.bpad) {
wgt._subnodes.bpad.classList.add('rod-bottom-spinner');
wgt._subnodes.bpad.style.width = "100%";
}
};
zk.afterLoad('zul.grid', function() {
var _xGrid = {};
zk.override(zul.grid.Grid.prototype, _xGrid, {
domPad_: function(c, d) {
if (this._grid$rod) {
c.push('<div id="', this.uuid, d, '" style="font-size:0px;display:none;overflow:hidden;width:100%;"></div>')
}
},
_setPadSize: function (pad, padId, sz) { //set pad size
var maxsz = zk.ie < 11 ? 1193046 : 16777216
this._padsz[padId] = sz;
var s = pad.style;
s.display = sz ? 'block' : 'none';
// display:none is used for IE 6/7 on B50-2997862-1.zul
var html = '<table id="' + this.uuid + '-' + padId + '-tbl">';
if (!zk.webkit)
while (true) {
html += '<tr style="height:' + Math.min(sz, maxsz) + 'px"><td></td></tr>';
sz -= maxsz;
if (sz <= 0) //last one
break;
}
else
while (true) {
html += '<tr><td style="height:' + Math.min(sz, maxsz) + 'px"></td></tr>';
sz -= maxsz;
if (sz <= 0) //last one
break;
}
html += '</table>';
jq(pad).empty().append(html);
}
});
});
]]></script>
<div apply="pkg$.TestComposer">
<custom-attributes org.zkoss.zul.grid.rod="true"/>
<custom-attributes org.zkoss.zul.grid.initRodSize="27"/>
<grid id="inboxGrid" width="800px" height="600px"
rowRenderer="pkg$.MyRowRenderer"
span="true"
onBind="meshRodStylesInit(this);">
<columns>
<column hflex="min" label="Column1" />
<column hflex="min" label="Column2" />
</columns>
</grid>
<textbox id="lastIndex" value="lastIndex"/>
<button id="refresh" label="refresh"/>
</div>
</zk>TestComposer.javajavaimport org.zkoss.zk.ui.*;
import org.zkoss.zk.ui.event.*;
import org.zkoss.zk.ui.util.*;
import org.zkoss.zk.ui.ext.*;
import org.zkoss.zk.au.*;
import org.zkoss.zk.au.out.*;
import org.zkoss.zul.*;
import java.util.*;
public class TestComposer extends GenericForwardComposer{
private Grid inboxGrid;
private ListModelList listModel;
private Textbox lastIndex;
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
listModel = new ListModelList(getData());
inboxGrid.setModel(listModel);
}
public void onClick$refresh(Event e){
listModel.clear();
List<String[]> resultData = getData();
listModel.addAll(resultData);
JavascriptCommands.scrollTop(inboxGrid);
String lastIndexValue = lastIndex.getValue();
if(lastIndexValue != null && !lastIndexValue.equals("lastIndex")){
JavascriptCommands.debug(inboxGrid.getRows().getChildren().size());
if(inboxGrid.getRows().getChildren().size() > Integer.valueOf(lastIndexValue)){
Row rowAtIndex = (Row) inboxGrid.getRows().getChildren().get(Integer.valueOf(lastIndexValue));
rowAtIndex.setAttribute("Selected", true);
rowAtIndex.setStyle("background-color: #CCCCCC !important");
} else {
// scroll to position
}
}
}
private List<String[]> getData(){
ArrayList<String[]> list= new ArrayList<String[]>();
for(int i=0; i<=1000;i++){
list.add(new String[]{Integer.toString(i),UUID.randomUUID().toString(),lastIndex.getUuid(),lastIndex.getValue()});
}
return list;
}
}
MyRowRenderer.javajavaimport org.zkoss.zk.ui.*;
import org.zkoss.zk.ui.event.*;
import org.zkoss.zk.ui.util.*;
import org.zkoss.zk.ui.ext.*;
import org.zkoss.zk.au.*;
import org.zkoss.zk.au.out.*;
import org.zkoss.zul.*;
public class MyRowRenderer implements RowRenderer {
public void render(final Row row, final java.lang.Object data,int ind) {
String[] ary = (String[]) data;
new Label(ary[0]).setParent(row);
new Label(ary[1]).setParent(row);
String lastIndex = ary[3];
row.addEventListener(0,"onClick",event->{
JavascriptCommands.setTextboxValue(ary[2],ary[0]);
Boolean rowSelected = (Boolean) row.getAttribute("Selected");
if (rowSelected != null && rowSelected) {
row.setAttribute("Selected", false);
row.setStyle("");
} else {
row.setAttribute("Selected", true);
row.setStyle("background-color: #CCCCCC !important");
}
});
if(!lastIndex.equals("lastIndex") && Integer.valueOf(lastIndex) == ind ){
row.setAttribute("Selected", true);
row.setStyle("background-color: #CCCCCC !important");
}
}
}
JavascriptCommands.javajavaimport org.zkoss.zk.ui.*;
import org.zkoss.zk.ui.event.*;
import org.zkoss.zk.ui.util.*;
import org.zkoss.zk.ui.ext.*;
import org.zkoss.zk.au.*;
import org.zkoss.zk.au.out.*;
import org.zkoss.zul.*;
public final class JavascriptCommands {
private JavascriptCommands() {
}
public static void scrollTop(Grid component) {
Clients.evalJavaScript("scrollTop('" + component.getUuid() + "')");
}
public static void setTextboxValue(String uuid, String value){
Clients.evalJavaScript("setTextboxValue('"+uuid+"','"+value+"')");
}
public static void debug(Object msg){
Clients.evalJavaScript("console.debug('"+msg.toString()+"');");
}
}