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ng-multiselect-dropdown3

v1.0.6

Published

> # Forked

Downloads

1,042

Readme

Angular Multiselect Dropdown 3

Forked

This project is forked from NileshPatel17/ng-multiselect-dropdown


npm version downloads downloads

Angular multiselect dropdown 3 component for web applications. Easy to integrate with Angular 16 projects. It can be bind to any custom data source.

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-dropdown3

And then include it in your module:

import { NgMultiSelectDropDown3Module } from 'ng-multiselect-dropdown3';
// ...

@NgModule({
  imports: [
    NgMultiSelectDropDown3Module
    // ...
  ]
  // ...
})
export class AppModule {}

Usage

import { Component, OnInit } from '@angular/core';
import { IDropdownSettings } from 'ng-multiselect-dropdown3';

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-dropdown3
  [placeholder]="'custom placeholder'"
  [settings]="dropdownSettings"
  [data]="dropdownList"
  [(ngModel)]="selectedItems"
  (onSelect)="onItemSelect($event)"
  (onSelectAll)="onSelectAll($event)"
>
</ng-multiselect-dropdown3>

Settings

| Setting | Type | Description | Default Value | | :----------------------------- | :--------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------ | | singleSelection | Boolean | Mode of this component. If set true user can select more than one option. | false | | placeholder | String | Text to be show in the dropdown, when no items are selected. | 'Select' | | disabled | Boolean | Disable the dropdown | false | | data | Array | Array of items from which to select. Should be an array of objects with id and text properties. You can also use custom properties. In that case you need to map idField and textField properties. As convenience, you may also pass an array of strings, in which case the same string is used for both the ID and the text(no mapping is required) | n/a | | idField | String | map id field in case of custom array of object | 'id' | | textField | String | map text field in case of custom array of object | 'text' | | enableCheckAll | Boolean | Enable the option to select all items in list | false | | selectAllText | String | Text to display as the label of select all option | Select All | | unSelectAllText | String | Text to display as the label of unSelect option | UnSelect All | | allowSearchFilter | Boolean | Enable filter option for the list. | false | | searchPlaceholderText | String | custom search placeholder | Search | | clearSearchFilter | Boolean | clear search filter on dropdown close | true | | maxHeight | Number | Set maximum height of the dropdown list in px. | 197 | | itemsShowLimit | Number | Limit the number of items to show in the input field. If not set will show all selected. | All | | limitSelection | Number | Limit the selection of number of items from the dropdown list. Once the limit is reached, all unselected items gets disabled. | none | | searchPlaceholderText | String | Custom text for the search placeholder text. Default value would be 'Search' | 'Search' | | noDataAvailablePlaceholderText | String | Custom text when no data is available. | 'No data available' | | closeDropDownOnSelection | Boolean | Closes the dropdown when item is selected. applicable only in cas of single selection | false | | defaultOpen | Boolean | open state of dropdown | false | | allowRemoteDataSearch | Boolean | allow search remote api if no data is present. | false |

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>

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.