Angular Multiselect Dropdown

Angular multiselect dropdown component for web applications. Easy to integrate and use. It can be bind to any custom data source.

Demo

Getting Started

Features

• dropdown with single/multiple selction option
• bind to any custom data source
• search item with custom placeholder text
• limit selection
• select/de-select all items
• custom theme

Installation

npm install ng-multiselect-dropdown

And then include it in your module (see app.module.ts):

import { NgMultiSelectDropDownModule } from 'ng-multiselect-dropdown';
// ...

@NgModule({
  imports: [
    NgMultiSelectDropDownModule.forRoot()
    // ...
  ]
  // ...
})
export class AppModule {}

Usage

import { Component, OnInit } from '@angular/core';
import { IDropdownSettings } from 'ng-multiselect-dropdown';

export class AppComponent implements OnInit {
  dropdownList = [];
  selectedItems = [];
  dropdownSettings = {};
  ngOnInit() {
    this.dropdownList = [
      { item_id: 1, item_text: 'Mumbai' },
      { item_id: 2, item_text: 'Bangaluru' },
      { item_id: 3, item_text: 'Pune' },
      { item_id: 4, item_text: 'Navsari' },
      { item_id: 5, item_text: 'New Delhi' }
    ];
    this.selectedItems = [
      { item_id: 3, item_text: 'Pune' },
      { item_id: 4, item_text: 'Navsari' }
    ];
    this.dropdownSettings:IDropdownSettings = {
      singleSelection: false,
      idField: 'item_id',
      textField: 'item_text',
      selectAllText: 'Select All',
      unSelectAllText: 'UnSelect All',
      itemsShowLimit: 3,
      allowSearchFilter: true
    };
  }
  onItemSelect(item: any) {
    console.log(item);
  }
  onSelectAll(items: any) {
    console.log(items);
  }
}

<ng-multiselect-dropdown
  [placeholder]="'custom placeholder'"
  [settings]="dropdownSettings"
  [data]="dropdownList"
  [(ngModel)]="selectedItems"
  (onSelect)="onItemSelect($event)"
  (onSelectAll)="onSelectAll($event)"
>
</ng-multiselect-dropdown>

Settings

Callback Methods

• onSelect - Return the selected item when an item is checked. Example : (onSelect)="onItemSelect($event)"
• onSelectAll - Return the all items. Example : (onSelectAll)="onSelectAll($event)".
• onDeSelect - Return the unselected item when an item is unchecked. Example : (onDeSelect)="onItemDeSelect($event)"
• onFilterChange - Return the key press. Example : (onFilterChange)="onFilterChange($event)"
• onDropDownClose- Example : (onDropDownClose)="onDropDownClose()"

Custom Theme

• The component package has a themes folder in node_modules at ng-multiselet-dropdown\themes\ng-multiselect-dropdown.theme.scss
• Include the ng-multiselet-dropdown.theme.css in angular-cli.json (for versions below angular 6) and angular.json (for version 6 or more).
• Refer this file on how to add the css file to your angular project.

Custom Template(in beta):

Variables can be used in template

1. id: return id as number
2. option: return option text. return string
3. isSelected: determine if item is selected or not. returns boolean

Template for each item

<ng-template #optionsTemplate let-item let-option="option" let-id="id" let-isSelected="isSelected">
  {{option}}
</ng-template>

Template for selected item

<ng-template #optionSelectedTemplate optionSelectedTemplate let-option="option"  let-id="id">
  {{option}}
</ng-template>

Demo

Run locally

• Clone the repository or downlod the .zip,.tar files.
• Run npm install
• Run ng serve for a dev server
• Navigate to http://localhost:4200/

Library Build / NPM Package

Run yarn build:lib to build the library and generate an NPM package. The build artifacts will be stored in the dist-lib/ folder.

Running unit tests

Run yarn test to execute the unit tests.

Development

This project was generated with Angular CLI version 1.7.1.

Contributions

Contributions are welcome, please open an issue and preferrably file a pull request.

Opening Issue

Please share sample code using codesandbox.com or stackblitz.com to help me re-produce the issue.

License

MIT License.

Contributors ✨

Thanks goes to these wonderful people (emoji key):

This project follows the all-contributors specification. Contributions of any kind welcome!