techhiveteam-multiselect-dropdown

[Documentation]

Table of Contents

1. Getting Started

2. Installation

3. Usage

4. Templates

5. Template Driven Forms support

5. Reactive Forms support

6. Settings configuration

7. Callbacks and events

8. Lazy lodaing - handle large data lists

9. Group By feature

10. Search filter for both plain list and grouped list

Getting Started

Installation

• Install the package : npm install techhive-multiselect-dropdown

• Once installed import TechhiveMultiSelectModule from the installed package into your module as follows:

Usage

Import TechhiveMultiSelectModule into NgModule in app.module.ts

import { TechhiveMultiSelectModule } from 'techhive-multiselect-dropdown/angular2-multiselect-dropdown';

@NgModule({
  // ...
  imports: [
    TechhiveMultiSelectModule,
  ]
  // ...
})

Declare the component data variables and options in your component where you want to consume the dropdown component.

import { Component, OnInit } from '@angular/core';

export class AppComponent implements OnInit {
    dropdownList = [];
    selectedItems = [];
    dropdownSettings = {};
    ngOnInit(){
        this.dropdownList = [
                            { 'id': 1, 'name': 'Java' },
							{ 'id': 2, 'name': 'Angular' },
							{ 'id': 3, 'name': 'PHP' },
							{ 'id': 4, 'name': 'WordPress' },
							{ 'id': 5, 'name': 'Node.js' },
							{ 'id': 6, 'name': 'Android' },
							{ 'id': 7, 'name': 'IOS' },
							{ 'id': 8, 'name': 'Magento' },
							{ 'id': 9, 'name': 'Codeigniter' },
							{ 'id': 10, 'name': 'Python' }
                            ];
        this.selectedItems = [1,2,3,5];
        this.dropdownSettings = { 
                                  singleSelection: false, 
                                  text:"Select languages",
                                  selectAllText:'Select All',
                                  unSelectAllText:'UnSelect All',
                                  enableSearchFilter: true,
                                  classes:"myclass custom-class",
								  maxHeight : '100px',
								  allowClear : true
                                };            
    }
    onItemSelect(item:any){
        console.log(item);
        console.log(this.selectedItems);
    }
    OnItemDeSelect(item:any){
        console.log(item);
        console.log(this.selectedItems);
    }
    onSelectAll(items: any){
        console.log(items);
    }
    onDeSelectAll(items: any){
        console.log(items);
    }
}

Add the following component tag in you template

<techhive-multiselect [data]="dropdownList" [(ngModel)]="selectedItems" 
    [settings]="dropdownSettings" 
    (onSelect)="onItemSelect($event)" 
    (onDeSelect)="OnItemDeSelect($event)"
    (onSelectAll)="onSelectAll($event)"
    (onDeSelectAll)="onDeSelectAll($event)"></techhive-multiselect>

Template - For custom html of menu item

<techhive-multiselect [data]="dropdownList" [(ngModel)]="selectedItems" [settings]="dropdownSettings">
  <c-item>
          <ng-template let-item="item">
            <label style="color: #333;min-width: 150px;">{{item.name}}</label>
            <img [src]="item.image" style="width: 30px; border: 1px solid #efefef;margin-right: 20px;" />
            <label>Capital - {{item.capital}}</label>
          </ng-template>
  </c-item>    
</techhive-multiselect>

Template - For custom html of Selected item - badge

<techhive-multiselect [data]="dropdownList" [(ngModel)]="selectedItems" [settings]="dropdownSettings">
  <c-badge>
           <ng-template let-item="item">
            <label style="margin: 0px;">{{item.name}}</label>
            <img [src]="item.image" style="width: 16px; margin-right: 5px;" />
           </ng-template>
  </c-badge>  
</techhive-multiselect>

Template Driven Forms support

<form (ngSubmit)="onSubmit()" #loginForm="ngForm" style="border: 1px solid #ccc; padding: 10px;">
        <div class="form-group">
            <label for="name">Skills</label>
            <techhive-multiselect [data]="itemList" [(ngModel)]="formModel.skills" 
                                  [settings]="settings" 
                                  (onSelect)="onItemSelect($event)"
                                  (onDeSelect)="OnItemDeSelect($event)" 
                                  (onSelectAll)="onSelectAll($event)" 
                                  (onDeSelectAll)="onDeSelectAll($event)" name="skills">
            </techhive-multiselect>
        </div>
</form>

formModel = {
        name: '',
        email: '[e-mail]',
        skills: [{ "id": 1, "name": "Angular" }]
    };

Reactive Forms support

<form [formGroup]="userForm" novalidate style="border: 1px solid #ccc; padding: 10px;">
        <div class="form-group">
            <label for="name">Skills</label>
           <techhive-multiselect [data]="itemList" [(ngModel)]="selectedItems" 
                                  [settings]="settings" 
                                  (onSelect)="onItemSelect($event)"
                                  (onDeSelect)="OnItemDeSelect($event)" 
                                  (onSelectAll)="onSelectAll($event)" 
                                  (onDeSelectAll)="onDeSelectAll($event)" formControlName="skills">
            </techhive-multiselect>
        </div>
</form>

userForm: FormGroup;
this.userForm = this.fb.group({
            name: '',
            email: ['', Validators.required],
            skills: [[], Validators.required]
        });

Settings

The following list of settings are supported by the component. Configure the settings to meet your requirement.

Setting	Type	Description	Default Value
singleSelection	Boolean	To set the dropdown for single item selection only.	false
text	String	Text to be show in the dropdown, when no items are selected.	'Select'
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
enableSearchFilter	Boolean	Enable filter option for the list.	false
maxHeight	Number	Set maximum height of the dropdown list in px.	300
badgeShowLimit	Number	Limit the number of badges/items to show in the input field. If not set will show all selected.	All
classes	String	Custom classes to the dropdown component. Classes are added to the dropdown selector tag. To add multiple classes, the value should be space separated class names.	''
limitSelection	Number	Limit the selection of number of items from the dropdown list. Once the limit is reached, all unselected items gets disabled.	none
disabled	Boolean	Disable the dropdown	false
allowClear	Boolean	If allow clear is false, it will not allow to deselect item when selected item has only 1 item	true
searchPlaceholderText	String	Custom text for the search placeholder text. Default value would be 'Search'	'Search'
groupBy	String	Name of the field by which the list should be grouped.	none
searchAutofocus	Boolean	Autofocus search input field	true
labelKey	String	The property name which should be rendered as label in the dropdown	name
primaryKey	String	The property by which the object is identified. Default is 'id'.	id
position	String	Set the position of the dropdown list to 'top' or 'bottom'	bottom

Callback Methods

• onSelect - Return the selected item on selection. Example : (onSelect)="onItemSelect($event)"
• onDeSelect - Return the un-selected item on un-selecting. Example : (onDeSelect)="OnItemDeSelect($event)"
• onSelectAll - Return the list of all selected items. Example : (onSelectAll)="onSelectAll($event)"
• onDeSelectAll - Returns an empty array. Example : (onDeSelectAll)="onDeSelectAll($event)"
• onOpen - Callback method fired after the dropdown opens Example : (onOpen)="onOpen($event)"
• onClose - Callback method, fired when the dropdown is closed Example : (onClose)="onClose($event)"

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/