Vue Loading Overlay Component

Vue.js component for full screen loading indicator

Demo or JSFiddle

Installation

# yarn
yarn add vue-loading-overlay

# npm
npm install vue-loading-overlay 

Usage

As component

<template>
    <div class="vld-parent">
        <loading :active.sync="isLoading" 
        :can-cancel="true" 
        :on-cancel="onCancel"
        :is-full-page="fullPage"></loading>
        
        <label><input type="checkbox" v-model="fullPage">Full page?</label>
        <button @click.prevent="doAjax">fetch Data</button>
    </div>
</template>

<script>
    // Import component
    import Loading from 'vue-loading-overlay';
    // Import stylesheet
    import 'vue-loading-overlay/dist/vue-loading.css';
    
    export default {
        data() {
            return {
                isLoading: false,
                fullPage: true
            }
        },
        components: {
            Loading
        },
        methods: {
            doAjax() {
                this.isLoading = true;
                // simulate AJAX
                setTimeout(() => {
                  this.isLoading = false
                },5000)
            },
            onCancel() {
              console.log('User cancelled the loader.')
            }
        }
    }
</script>

As plugin

<template>
    <form @submit.prevent="submit" class="vld-parent" ref="formContainer">
        <!-- your form inputs goes here-->
        <label><input type="checkbox" v-model="fullPage">Full page?</label>
        <button type="submit">Login</button>
    </form>
</template>

<script>
    import Vue from 'vue';
    // Import component
    import Loading from 'vue-loading-overlay';
    // Import stylesheet
    import 'vue-loading-overlay/dist/vue-loading.css';
    // Init plugin
    Vue.use(Loading);

    export default {
        data() {
            return {
                fullPage: false
            }
        },
        methods: {
            submit() {
                let loader = this.$loading.show({
                  // Optional parameters
                  container: this.fullPage ? null : this.$refs.formContainer,
                  canCancel: true,
                  onCancel: this.onCancel,
                });
                // simulate AJAX
                setTimeout(() => {
                  loader.hide()
                },5000)                 
            },
            onCancel() {
              console.log('User cancelled the loader.')
            }                      
        }
    }
</script>

Available props

The component accepts these props:

| Attribute | Type | Default | Description | | :--- | :---: | :---: | :--- | | active | Boolean | false | Show loading by default when true, use the .sync modifier to make it two-way binding | | can-cancel | Boolean | false | Allow user to cancel by pressing ESC or clicking outside | | on-cancel | Function | ()=>{} | Do something upon cancel, works in conjunction with can-cancel | | is-full-page | Boolean | true | When false; limit loader to its container^ | | transition | String | fade | Transition name | | color | String | #000 | Customize the color of loading icon | | height | Number | * | Customize the height of loading icon | | width | Number | * | Customize the width of loading icon | | loader | String | spinner | Name of icon shape you want use as loader, spinner or dots or bars | | background-color | String | #fff | Customize the overlay background color | | opacity | Number | 0.5 | Customize the overlay background opacity | | z-index | Number | 9999 | Customize the overlay z-index | | enforce-focus | Boolean | true | Force focus on loader | | lock-scroll | Boolean | false | Freeze the scrolling during full screen loader | | blur | String | 2px | Value for the CSS blur backdrop-filter. Set to null or an empty string to disable blurring |

• ^When is-full-page is set to false, the container element should be positioned as position: relative. You can use CSS helper class vld-parent.
• *The default height and width values may be varied based on the loader prop value

Available slots

The component accepts these slots:

• default : Replace the animated icon with yours
• before : Place anything before the animated icon, you may need to style this.
• after : Place anything after the animated icon, you may need to style this.

API methods

Vue.$loading.show(?propsData,?slots)

let loader = Vue.$loading.show({
  // Pass props by their camelCased names
  container: this.$refs.loadingContainer,
  canCancel: true, // default false
  onCancel: this.yourCallbackMethod,
  color: '#000000',
  loader: 'spinner',
  width: 64,
  height: 64,
  backgroundColor: '#ffffff',
  opacity: 0.5,
  zIndex: 999,
},{
  // Pass slots by their names
  default: this.$createElement('your-custom-loader-component-name'),
});
// hide loader whenever you want
loader.hide();

Global configs

You can set props and slots for all future instances when using as plugin

Vue.use(Loading, {
  // props
  color: 'red'
},{
  // slots
})

Further you can override any prop or slot when creating new instances

let loader = Vue.$loading.show({
 color: 'blue'
},{
  // slots
});

Install in non-module environments (without webpack)

<!-- Vue js -->
<script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
<!-- Lastly add this package -->
<script src="https://cdn.jsdelivr.net/npm/vue-loading-overlay@3"></script>
<link href="https://cdn.jsdelivr.net/npm/vue-loading-overlay@3/dist/vue-loading.css" rel="stylesheet">
<!-- Init the plugin and component-->
<script>
Vue.use(VueLoading);
Vue.component('loading', VueLoading)
</script>

Browser support

• Modern browsers only

Run examples on your localhost

• Clone this repo
• Make sure you have node-js >=12.14 and yarn >=1.x pre-installed
• Install dependencies - yarn install
• Run webpack dev server - yarn start
• This should open the demo page at http://localhost:9000 in your default web browser

Testing

• This package is using Jest and vue-test-utils for testing.
• Tests can be found in __test__ folder.
• Execute tests with this command yarn test

License

MIT License