Getting Started with the Vue Predefined dialogs Component in Vue 2

12 Aug 202314 minutes to read

This article provides a step-by-step guide for setting up a Vue 2 project using Vue-CLI and integrating the Syncfusion Vue Predefined dialogs component

Prerequisites

System requirements for Syncfusion Vue UI components

Dependencies

The list of dependencies required to use the predefined dialogs in your application is given below:

|-- @syncfusion/ej2-vue-popups
    |-- @syncfusion/ej2-vue-base
    |-- @syncfusion/ej2-vue-buttons
    |-- @syncfusion/ej2-popups
        |-- @syncfusion/ej2-base
        |-- @syncfusion/ej2-buttons

Setting up the Vue 2 project

To generate a Vue 2 project using Vue-CLI, use the vue create command. Follow these steps to install Vue CLI and create a new project:

npm install -g @vue/cli
vue create quickstart
cd quickstart
npm run serve

or

yarn global add @vue/cli
vue create quickstart
cd quickstart
yarn run serve

When creating a new project, choose the option Default ([Vue 2] babel, eslint) from the menu.

Once the quickstart project is set up with default settings, proceed to add Syncfusion components to the project.

Add Syncfusion Vue packages

Syncfusion packages are available at npmjs.com. To use Vue components, install the required npm package.

This article uses the Vue Predefined dialogs component as an example. Install the @syncfusion/ej2-vue-popups package by running the following command:

npm install @syncfusion/ej2-vue-popups --save

or

yarn add @syncfusion/ej2-vue-popups

Import Syncfusion CSS styles

You can import themes for the Syncfusion Vue component in various ways, such as using CSS or SASS styles from npm packages, CDN, CRG and Theme Studio. Refer to themes topic to know more about built-in themes and different ways to refer to themes in a Vue project.

In this article, the Material theme is applied using CSS styles, which are available in installed packages. The necessary Material CSS styles for the predefined dialogs component and its dependents were imported into the <style> section of src/App.vue file.

~/src/App.vue

<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-buttons/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-popups/styles/material.css";
</style>

The Custom Resource Generator (CRG) is an online web tool, which can be used to generate the custom script and styles for a set of specific components.
This web tool is useful to combine the required component scripts and styles in a single file.

Add Syncfusion Vue component

Follow the below steps to add the Vue Predefined dialogs component:

1. First, import and register the Predefined dialogs component in the script section of the src/App.vue file.

~/src/App.vue

<script>
import { DialogUtility } from "@syncfusion/ej2-vue-popups";
import { ButtonComponent } from "@syncfusion/ej2-vue-buttons";

export default {
  components: {
    'ejs-button': ButtonComponent
  }
}
</script>

2. In the template section, define the Predefined dialogs component.

~/src/App.vue

<template>
  <div>
    <div class="predefinedDialogs">
      <ejs-button id="alertDlgBtn" v-on:click.native="alertBtnClick" cssClass="e-danger">Alert</ejs-button>
      <span id="statusText"></span>
    </div>
  </div>
</template>

Creating Vue sample

Add the following code to the App.vue file in src directory.

<template>
  <div>
    <div class="predefinedDialogs">
      <ejs-button id="alertDlgBtn" v-on:click.native="alertBtnClick" cssClass="e-danger">Alert</ejs-button>
      <span id="statusText"></span>
    </div>
  </div>
</template>

<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-buttons/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-popups/styles/material.css";
#statusText {
  font-size: 16px;
  margin-top: 20px;
}
.predefinedDialogs {
  height: 100%;
  min-height: 350px;
}
</style>

<script>
import { DialogUtility } from "@syncfusion/ej2-vue-popups";
import { ButtonComponent } from "@syncfusion/ej2-vue-buttons";

export default {
  components: {
    'ejs-button': ButtonComponent
  },
  data: function () {
    return {};
  },
  methods: {
    alertBtnClick: function () {
      document.getElementById("statusText").style.display = "none";
      DialogUtility.alert({
        title: "Low battery",
        content: "10% of battery remaining",
      });
    },
  },
}
</script>

Show alert dialog

An alert dialog box used to display an errors, warnings, and information alerts that needs user awareness. This can be achieved by using the DialogUtility.alert method. The alert dialog is displayed along with the OK button. When user clicks on OK button, alert dialog will get closed.

In the below code example, alert dialog displayed on button click action.

Now run the npm run dev command in the console, it will build your application and open in the browser.

~/src/App.vue

<template>
  <div class="predefinedDialogs">
    <ejs-button id="alertDlgBtn" v-on:click.native="alertBtnClick" cssClass="e-danger">Alert</ejs-button>
    <span id="statusText"></span>
  </div>
</template>

<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-buttons/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-popups/styles/material.css";
#statusText {
  font-size: 16px;
  margin-top: 20px;
}
.predefinedDialogs {
  height: 100%;
  min-height: 350px;
}
</style>

<script>
import { DialogUtility } from "@syncfusion/ej2-vue-popups";
import { ButtonComponent } from "@syncfusion/ej2-vue-buttons";

let dialogObj = undefined;
export default {
  components: {
    'ejs-button': ButtonComponent
  },
  data: function () {
    return {};
  },
  methods: {
    alertBtnClick: function () {
      document.getElementById("statusText").style.display = "none";
      dialogObj = DialogUtility.alert({
        title: "Low battery",
        content: "10% of battery remaining",
        okButton: { click: this.alertOkAction },
        position: { X: "center", Y: "center" },
      });
    },
    alertOkAction: function () {
      dialogObj.hide();
      document.getElementById("statusText").innerHTML =
        "The user closed the Alert dialog.";
      document.getElementById("statusText").style.display = "block";
    },
  },
}
</script>

Show confirm dialog

A confirm dialog box used to displays a specified message along with the OK and Cancel buttons. This can be achieved by using the DialogUtility.confirm method. It is used to get approval from the user, and it appears before any critical action. After get approval from the user the dialog will disappear automatically.

In the below code example, the confirm dialog displayed on OK and Cancel button click action.

~/src/App.vue

<template>
  <div class="predefinedDialogs">
    <ejs-button id="confirmDlgBtn"  v-on:click.native="confirmBtnClick" cssClass = "e-success">Confirm</ejs-button>
    <span id="statusText"></span>
  </div>
</template>

<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-buttons/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-popups/styles/material.css";
#statusText {
  font-size: 16px;
  margin-top: 20px;
}
.predefinedDialogs {
  height: 100%;
  min-height: 350px;
}
</style>

<script>
import { DialogUtility } from "@syncfusion/ej2-vue-popups";
import { ButtonComponent } from "@syncfusion/ej2-vue-buttons";

let dialogObj = undefined;
export default {
  components: {
    'ejs-button': ButtonComponent
  },
  data: function () {
    return {};
  },
  methods: {
    confirmBtnClick: function () {
        document.getElementById("statusText").style.display="none";
        dialogObj = DialogUtility.confirm({
            title: " Delete multiple items",
            content: "Are you sure you want to permanently delete these items?",
            okButton: { click:this.confirmOkAction},
            cancelButton: { click:this.confirmCancelAction},
        });
      },
      confirmOkAction:function () {
          dialogObj.hide();
          document.getElementById("statusText").innerHTML="The user confirmed the dialog box";
          document.getElementById("statusText").style.display="block";
      },
      confirmCancelAction:function(){
          dialogObj.hide();
          document.getElementById("statusText").innerHTML="The user canceled the dialog box.";
          document.getElementById("statusText").style.display="block";
      }
  },
}
</script>

Show Prompt dialog

A prompt dialog is used to get the input from the user. When the user clicks the OK button the input value from the dialog is returned. If the user clicks the Cancel button the null value is returned. After getting the input from the user the dialog will disappear automatically.

In the below code example, the confirm dialog displayed on OK and Cancel button click action.

~/src/App.vue

<template>
  <div class="predefinedDialogs">
    <ejs-button id="promptDlgBtn"  v-on:click.native="promptBtnClick" :isPrimary="true">Prompt</ejs-button>
    <span id="statusText"></span>
  </div>
</template>

<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-buttons/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-popups/styles/material.css";
#statusText {
  font-size: 16px;
  margin-top: 20px;
}
.predefinedDialogs {
  height: 100%;
  min-height: 350px;
}
</style>

<script>
import { DialogUtility } from "@syncfusion/ej2-vue-popups";
import { ButtonComponent } from "@syncfusion/ej2-vue-buttons";

let dialogObj = undefined;
let value ;
export default {
  components: {
    'ejs-button': ButtonComponent
  },
  data: function () {
    return {};
  },
  methods: {
     promptBtnClick: function () {
            document.getElementById("statusText").style.display="none";
            dialogObj = DialogUtility.confirm({
                title: "Join chat group",
                content:'<P>Enter your name:</p><input id= "inputEle" type="text" name="Required" class="e-input" placeholder="Type here.." />',
                okButton: { click:this.promptOkAction },
                cancelButton: { click:this.promptCancelAction},
                position: { X: 'center', Y: 'center' }
            });
        },
    promptOkAction:function () {
        value = document.getElementById("inputEle").value;
        if(value ==""){
            dialogObj.hide();
            document.getElementById("statusText").innerHTML="The user's input is returned as\" \"";
            document.getElementById("statusText").style.display="block";
        }
        else{
            dialogObj.hide();
            document.getElementById("statusText").innerHTML="The user's input is returned as" +" "+ value;
            document.getElementById("statusText").style.display="block";
        }
        },
        promptCancelAction:function () {
            dialogObj.hide ();
            document.getElementById("statusText").innerHTML ="The user canceled the prompt dialog";
            document.getElementById("statusText").style.display="block";
        }
  },
}
</script>