The ListView component triggers events based on its actions. The events can be used as extension points to perform custom operations. Refer to the following steps to trace the ListView events:
actionBegin
, actionComplete
, and select
events.actionBegin
, actionComplete
, and select events.actionBegin
and actionComplete
events, and they will be displayed in the event trace panel when the ListView action starts and the dataSource bound successfully.SelectEventArgs
in the select event, and display the selected list item text in the event trace panel while selecting list items.<template>
<div id="sample">
<div class="content-wrapper">
<!-- ListView element -->
<ejs-listview id='listview-def' ref='listviewInstance' :dataSource='data' width=250 :actionBegin='onBegin' :actionComplete='onComplete' :select='onSelect'>
</ejs-listview>
</div>
<div id="list_event">
<h4><b>Event Trace</b></h4>
<div id="evt">
<div class="eventarea" style="height:273px;overflow: auto">
<span ref='EventLogEle' class="EventLog" id="EventLog" style="word-break: normal;"></span>
</div>
<div class="evtbtn">
<ejs-button id="clear" @click.native='onClick'>Clear</ejs-button>
</div>
</div>
</div>
</div>
</template>
<style>
#EventLog b {
color: #388e3c;
}
#listview-def {
border: 1px solid #dcdcdc;
}
.content-wrapper {
padding-left: 40px;
padding-top: 36px;
}
.evtbtn {
margin-top: 40px;
margin-left: 70px;
}
/* csslint ignore:start */
hr {
margin-top: 6px !important;
margin-bottom: 6px !important;
}
/* csslint ignore:end */
#evt {
border: 1px solid #dcdcdc;
padding: 10px;
min-width: 10px;
}
#sample {
display: inline-flex;
}
.eventarea {
min-width: 250px;
}
#list_event {
margin-top: -25px;
padding-left:40px;
min-width: 200px;
}
</style>
<script>
import Vue from "vue";
import { ListViewPlugin } from "@syncfusion/ej2-vue-lists";
import {ButtonPlugin } from "@syncfusion/ej2-vue-buttons";
Vue.use(ListViewPlugin);
Vue.use(ButtonPlugin);
export default {
data: function() {
return {
data: [
{ text: "Hennessey Venom", id: "list-01" },
{ text: "Bugatti Chiron", id: "list-02" },
{ text: "Bugatti Veyron Super Sport", id: "list-03" },
{ text: "SSC Ultimate Aero", id: "list-04" },
{ text: "Koenigsegg CCR", id: "list-05" },
{ text: "McLaren F1", id: "list-06" },
{ text: "Aston Martin One- 77", id: "list-07" },
{ text: "Jaguar XJ220", id: "list-08" },
{ text: "McLaren P1", id: "list-09" },
{ text: "Ferrari LaFerrari", id: "list-10" }
]
};
},
methods:{
onBegin: function(){
this.appendElement("<b>actionBegin </b> event is triggered<hr>");
},
onComplete: function(){
this.appendElement("<b>actionComplete</b> is triggered <hr>");
},
onSelect: function(args){
this.appendElement(args.text + "<b> is selected</b><hr>");
},
appendElement: function(html) {
let span = document.createElement("span");
span.innerHTML = html;
let log = this.$refs.EventLogEle;
log.insertBefore(span, log.firstChild);
},
onClick: function(event){
this.$refs.EventLogEle.innerHTML = "";
}
}
}
</script>