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Validate Image on Drop in Vue Uploader component

The uploader component allows you to upload all type of images by setting image/* to allowedExtensions property or directly you can set it to accept attribute of uploader element.

By default, the behavior is working with select a file using browse button. But, this behavior doesn’t support on drag and drop the files. You can handle this behavior manually using selected event by filtering the file types from application.

In the following example, validated image files using images/*. You are able to drag and drop the image files with extension of png, jpg, bpg, gif and tiff to upload it.

Source
Preview
app.vue
<template>
  <div>
    <ejs-uploader ref="uploadObj" id='defaultfileupload' :selected="onSelect" name="UploadFiles" :autoUpload="autoUpload" :asyncSettings= "path" :allowedExtensions="extensions"></ejs-uploader>
  </div>
</template>
<script>
import Vue from 'vue';
import { UploaderPlugin, SelectedEventArgs } from '@syncfusion/ej2-vue-inputs';
import { DialogPlugin } from '@syncfusion/ej2-vue-popups';
import { createElement, detach } from '@syncfusion/ej2-base';
Vue.use(UploaderPlugin);
Vue.use(DialogPlugin);

export default {
  data: function(){
        return {
          path:  {
            saveUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Save',
            removeUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Remove'
          },
            autoUpload: false,
            extensions: 'image/*'
        }
    },
    methods: {
          onSelect:function(args: SelectedEventArgs): void {
                if (args.event.type === 'drop') {
            let allImages: Array<string> = ['png', 'jpg', 'jpeg', 'gif', 'tiff', 'bpg'];
            let files = args.filesData;
            let modifiedFiles = [];
            for (let file of files) {
            if (allImages.indexOf(file.type) === -1) {
                file.status = 'File type is not allowed';
                file.statusCode = '0';
            }
            modifiedFiles.push(file);
            }
            args.isModified = true;
        }
        }
    }
}
</script>
<style>
@import "../../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../../node_modules/@syncfusion/ej2-buttons/styles/material.css";
@import "../../node_modules/@syncfusion/ej2-vue-inputs/styles/material.css";
 #container {
        visibility: hidden;
        padding-left: 5%;
        width: 100%;
    }
    #loader {
        color: #008cff;
        font-family: 'Helvetica Neue','calibiri';
        font-size: 14px;
        height: 40px;
        left: 45%;
        position: absolute;
        top: 45%;
        width: 30%;
    }

</style>