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Introduction

Dialogs are a typical and essential user interaction in interactive applications. But implementing dialogs are not an easy thing in front-end web development.

vue-modal-dialogs is a super light-weighted library aimed to help developers to easily use dialogs by the advantage of Vue.js, Promise, and async function.

Features

• ✅ Light weighted (~1kb min+gzip)
• ✅ Promise based
• ✅ Functional programming
• ✅ Full customizable
• ✅ Place everything you want into that dialog

Features below is not provided. You can achieve them by yourself:

• ❌ Pre-defined dialog style
• ❌ Shortcut function in Vue's prototype

Installation

Install via npm or yarn (recommended)

# Use npm
npm install vue-modal-dialogs --save

# Use yarn
yarn add vue-modal-dialogs

Quick glance

// main.js

import Vue from 'vue'
import ModalDialogs from 'vue-modal-dialogs'
import MessageComponent from 'components/message.vue'

// Initialization
Vue.use(ModalDialogs)

// Make a dialog function called 'message' with two arguments: 'title' and 'content'
const message = ModalDialogs.makeDialog(MessageComponent, 'title', 'content')

// Now you are able to call `message` with 'title' as the first argument and 'content' as the second argument. It returns a Promise so you can easily use it in an async function.
new Vue({
  template: '<button @click="removeEverything">Click Me!</button>',
  methods: {
    async removeEverything () {
      if (await message('Warning', 'Are you sure to remove everything from your computer?')) {
        // boom!
      }
    }
  }
})

In MessageComponent, just call this.$close with some data when you are done. It can be done even in component's template.

<!-- MessageComponent.vue -->

<template>
  <div class="message">
    <h1>{{ title }}</h1>
    <p>{{ content }}</p>
    <button @click="$close(true)">confirm</button>
    <button @click="cancel">cancel</button>
  </div>
</template>

<script>
  export default {
    methods: {
      cancel () {
        this.$close(false)
      }
    }
  }
</script>

That's all!

Guide & API

Initialization

Vue.use(VueModalDialogs, { /* optional options */ })

You can have a few options here:

interface PluginOptions {
  /**
   * Mount point of the wrapper element. All dialogs will be inside this wrapper.
   * vue-modal-dialogs automatically creates a new element if that element is not present.
   *
   * Defaults to `undefined`.
   */
  el?: HTMLElement | string,

  /**
   * Render options of the wrapper element.
   *
   * This options is the same to VNode's render option.
   * You can pass any props/events supported by the <transition-group> component.
   * See https://vuejs.org/v2/guide/render-function.html#The-Data-Object-In-Depth
   */
  wrapper?: WrapperRenderOptions

  /**
   * Component options of the dialog wrapper component.
   */
  wrapperComponentOptions?: Vue.ComponentOptions<Vue>

  /**
   * Options to control the `z-index` css property of each dialog.
   * This feature guarantees that the newer dialog is always on the top of the older dialogs.
   * You can disable this feature by setting this option to `false`.
   */
  zIndex?: {
    /**
     * The initial value of `z-index`.
     *
     * Defaults to `1000`.
     */
    value?: number,

    /**
     * Indicates if the `z-index` auto increases
     * when a new modal dialog is shown.
     *
     * Defaults to `true`.
     */
    autoIncrement?: boolean
  }
}

Dialog function

A dialog function is nothing but a function that returns a Promise.

Call makeDialog function to make a dialog function. You can call it by ModalDialogs.makeDialogs or import makeDialog function like this:

import { makeDialog } from 'vue-modal-dialogs'

Here are the definitions of the makeDialog function:

function makeDialog (component: VueComponent, ...props: string[]): DialogFunction
function makeDialog (options: DialogOptions): DialogFunction

Here are the options:

interface DialogOptions {
  /** A Vue component that will be the 'dialog component' */
  component: DialogComponent,

  /** An array that maps the argument list to props */
  props: string[],

  /**
   * Options to render the dialog component.
   *
   * This is the same to the VNode's render options.
   * See https://vuejs.org/v2/guide/render-function.html#The-Data-Object-In-Depth
   */
  render?: Vue.VNodeData
}

The props option is very important. It maps the arguments of the dialog function to the props of the dialog component. For example, if props is set to ['title', 'content'], then you call the dialog function like this:

dialogFunction('This is title', 'This is content', 'Extra argument')

The dialog component will receive these props:

{
  title: 'This is title',       // 1st argument
  content: 'This is content',   // 2nd argument
  dialogId: 0,                  // A unique ID of current dialog
  // stores all arguments
  arguments: ['This is title', 'This is content', 'Extra argument']
}

Note that makeDialog function is a pure function and a higher-order function. It does not modify the original component but generate a new components that extends the original one. You can use the original component everywhere else as-is. See https://vuejs.org/v2/api/#extends for more information.

Dialog component

Dialog components will be shown later when you call the dialog function. Here you need to decide how your dialog looks like.

Typically there are some arguments passed into the dialog function. They can be easily retrieved from props. These props will be defined automatically. If you want to validate these props, just define them by yourself with some validation.

export default {
  // Here are two dialog arguments. You can use these props as normal props.
  // In fact, vue-modal-dialogs has already defined these props for you.
  // You may not define these props unless you want to do some validation.
  props: {
    title: String,
    content: String
  },
  ...
}

Additionally, two props will always be available in every dialog component:

1. arguments: This is an array containing everything you passed in the dialog function.
2. dialogId: A unique ID of current dialog. This is an internal data of vue-modal-dialogs.

A $close method will be added into this component automatically. Call this method with data when you are done (e.g. user pressing the OK button). It will close the current dialog component and resolve the previous created Promise.

this.$close(data)       // data is optional

You can make several dialog components and then use them for making dialog functions.

Contribution

Issues and PRs are welcomed!

Run development server

# use npm
npm run dev

# use yarn
yarn dev

Build production version

# use npm
npm run build

# use yarn
yarn build