Change sub menu position in Vue Menu component
16 Mar 20235 minutes to read
The submenu position can be changed by using the beforeOpen
event. Assign the top and left position where you want to open the submenu to the beforeOpen
event arguments args.top
and args.left
respectively.
In the below sample, the sub menu opens above the parent menu item.
<template>
<div>
<ejs-menu :items='menuItems' :beforeOpen='onBeforeOpen'></ejs-menu>
</div>
</template>
<script>
import Vue from 'vue';
import { MenuPlugin } from "@syncfusion/ej2-vue-navigations";
import { enableRipple, closest } from '@syncfusion/ej2-base';
enableRipple(true);
Vue.use(MenuPlugin);
export default {
data: function() {
return {
// Menu items definition
menuItems: [
{
text: 'File',
items: [
{ text: 'Open' },
{ text: 'Save' },
{ text: 'Exit' }]
},
{
text: 'Edit',
items: [
{ text: 'Cut' },
{ text: 'Copy' },
{ text: 'Paste' }]
},
{
text: 'View',
items: [
{ text: 'Toolbar' },
{ text: 'Sidebar' }]
},
{
text: 'Tools',
items: [
{ text: 'Spelling & Grammar' },
{ text: 'Customize' },
{ text: 'Options' }]
},
{ text: 'Go' },
{ text: 'Help' }
]
};
},
methods: {
onBeforeOpen(args) {
// Getting parent menu item element offset
let relativeOffset = closest(args.event.target, '.e-menu-item').getBoundingClientRect();
// Getting sub menu wrapper element using closest method
let subMenuEle = closest(args.element, '.e-menu-wrapper');
subMenuEle.style.display = 'block';
args.top = (relativeOffset.top - subMenuEle.getBoundingClientRect().height) + pageYOffset;
args.left = relativeOffset.left + pageXOffset;
subMenuEle.style.display = '';
}
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-popups/styles/material.css";
@import "../node_modules/@syncfusion/ej2-navigations/styles/material.css";
body {
margin-top: 200px;
text-align: center;
}
</style>
For custom positioning, set both
top
andleft
position in thebeforeOpen
event.