Vue Loading Overlay Component

Vue.js component for full screen loading indicator

Demo

Installation

 # yarn
yarn add vue3-loading-overlay  // not valiable now.

# npm
npm install vue3-loading-overlay

Usage

As component

 <template>
    <div class="vld-parent">
        <loading :active="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 {
        setup() {
          const isLoading = ref(false);
          const fullPage = ref(true);
          const doAjax=() => {
                isLoading.value = true;
                // simulate AJAX
                setTimeout(() => {
                  isLoading = false
                },5000)
            },
          const onCancel= ()=> {
              console.log('User cancelled the loader.');
              //because the props is single flow direction, you need to set isLoading status normally.
              isLoading.value = false;
          }
          return 
          {
            isLoading,
            fullPage,
            doAjax,
            onCancel
          }
        },
        components: {
            Loading
        }
    }
</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 { ref } from 'vue';
    // Import the method.
    import { useLoading } from 'vue3-loading-overlay';
    // Import stylesheet
    import 'vue3-loading-overlay/dist/vue3-loading-overlay.css';
    // Init plugin

    export default {
      setup() {
        const fullPage = ref(true);
        let formContainer = ref(null);

        const submit = () => {
          let loader = useLoading();
          loader.show({
            // Optional parameters
            container: this.fullPage ? null : formContainer.value,
            canCancel: true,
            onCancel: onCancel,
          });
                // simulate AJAX
          setTimeout(() => {
            loader.hide()
          },5000)                 
        };

        const onCancel =() => {
          console.log('User cancelled the loader.')
        };   
        return {
          fullPage,
          formContainer,
          submit
        }
      },
    }
</script>

Available props

The component accepts these props:

Attribute	Type	Default	Description
active	Boolean	false	Show loading by default when true
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 = useLoading();
loader.show({
  // Pass props by their camelCased names
  container: this.$refs.loadingContainer,
  canCancel: true, // default false
  onCancel: this.yourCallbackMethod,
  color: '#000000',
  loader: 'spinner',
  width: 64,
  height: 64,
  backgroundColor: '#ffffff',
  opacity: 0.5,
  zIndex: 999,
},{
  // Pass slots by their names, not work now.
  default: this.$createElement('your-custom-loader-component-name'),
});
// hide loader whenever you want
loader.hide();

Global configs

todo

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
});

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

• Todo.

License

MIT License