Suggested case list:
Using timer to refresh a grid
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index.zulzul<?xml version="1.0" encoding="UTF-8"?>
<!--
B86-ZK-3909-2.zul
Purpose:
Description:
History:
Thu Sep 13 10:31:59 CST 2018, Created by klyve
Copyright (C) 2018 Potix Corporation. All Rights Reserved.
-->
<zk xmlns="http://www.zkoss.org/2005/zul">
<script>
var lb;
var interval;
window.onload = function () {
console.log(jq(".z-listbox"));
lb = zk.$(jq(".z-listbox"));
//test();
}
var test = function () {
var i = 0;
window.setTimeout(function () {
firstStep();
i++
}, 2000)
<!--interval = window.setInterval( function() {-->
<!--executeCallBack[i]();-->
<!--i++;-->
<!--if (i == executeCallBack.length)-->
<!--wclearInterval();-->
<!--}, 5000);-->
}
var scrollDownLb = function () {
if (!interval) {
interval = window.setInterval( function() {
lb.$n("body").scrollTop = lb.$n("body").scrollTop + 1000;
}, 1000);
}
}
var scrollUpLb = function () {
if (!interval) {
interval = window.setInterval( function() {
lb.$n("body").scrollTop = lb.$n("body").scrollTop - 1000;
}, 1000);
}
}
var scrollToFirst = function () {
lb.$n("body").scrollTop = lb.firstItem.$n().offsetTop + lb._padsz.tpad - lb._avgrowhgh * lb._limit / 2;
}
var scrollToLast = function () {
lb.$n("body").scrollTop = lb.lastItem.$n().offsetTop + lb._padsz.tpad - lb._avgrowhgh * (lb._limit - 1) / 2;;
}
var wclearInterval = function () {
window.clearInterval(interval);
interval = null;
}
var firstStep = function () {
lb.$n("body").scrollTop = 40000;
}
var executeCallBack=[scrollToLast]
</script>
<label multiline="true">
1. look into Network of browser dev tool
2. scroll to the position at about 80% of the scrollbar
3. scroll to the position at about 20% of the scrollbar
4. repeat step 2 and 3 again
5. reload this page
6. repeat step 2 and 3 five times
7. both zkau time should not be slow (like not > 1 sec)
</label>
<window title="Dynamic Listbox Columns"
height="500px" width="800px" closable="true" border="normal" sizable="true" minheight="500" minwidth="700"
viewModel="@id('vm') @init('pkg$.TestVM')">
<custom-attributes org.zkoss.zul.listbox.initRodSize="10"/>
<custom-attributes org.zkoss.zul.listbox.preloadSize="100"/>
<custom-attributes org.zkoss.zul.listbox.rod="true"/>
<listbox model="@load(vm.data)" vflex="true" width="100%" sclass="center-cells">
<template name="model" var="line">
<listitem>
<forEach items="@init(line)" var="cell">
<listcell label="@load(cell)"/>
</forEach>
</listitem>
</template>
</listbox>
</window>
</zk>TestComposer.javajavaimport java.util.ArrayList;
import java.util.List;
import org.zkoss.bind.annotation.Init;
public class TestComposer {
private List<List<String>> data = new ArrayList<List<String>>();
private List<String> columns = new ArrayList<String>();
private List<String> headers = new ArrayList<String>();
@Init
public void init() {
for (int i = 0; i < 8; i++) {
headers.add("Header " + i);
for (int j = 0; j < 2; j++) {
columns.add("Dynamic Col " + i + "/" + j);
}
}
for (int i = 0; i < 2000; i++) {
ArrayList<String> dataLine = new ArrayList<String>();
for (int j = 0; j < 16; j++) {
dataLine.add("Data " + i + "/" + j);
}
data.add(dataLine);
}
}
public List<String> getHeaders() {
return headers;
}
public void setHeadList(List<String> headers) {
this.headers = headers;
}
public List<String> getColumns() {
return columns;
}
public void setColumns(List<String> columns) {
this.columns = columns;
}
public List<List<String>> getData() {
return data;
}
public void setData(List<List<String>> dataList) {
this.data = dataList;
}
}