Angular Cascadable Mentions

An extension of dmacfarlane's angular-mentions, with support for multi character triggercharacters and configuring following additional properties/events.

Additional Custom Properties

Properties
Property	Description	Type	Default
`hasChildren`	A Boolean representing whether this mention trigger has a linked child trigger as well	`true\|false`	`false`
`childTriggerChar`	Trigger character of the linked child mention	`String`	.
`childTriggerRegex`	A regex which can used to filter out any specific use cases where linked mention should not trigger	`RegExp`
`getChildren`	A callback which receives the parent mention value and expects to get items array in return	`(item: any, triggerChar: string) => any[]`

Angular Mentions

Simple Angular mentions inspired by Ment.io.

Click here for a Demo

This package provides auto-complete suggestions for @mentions in text input fields, text areas, and content editable fields.

Click here to experiment on StackBlitz

To install and start the demo application:

git clone https://github.com/dmacfarlane/angular-mentions.git
cd angular-mentions
npm install
ng serve

Usage

Add the package as a dependency to your project using:

npm install angular-mentions

Add the module to your app.module imports:

import { MentionModule } from 'angular-mentions';
...

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

Add the [mention] directive to your input element:

<input type="text" [mention]="items">

Where items is a string array of the items to suggest. For example:

items: string[] = ["Noah", "Liam", "Mason", "Jacob", ...

Configuration Options

The following optional configuration items can be used.

Option	Default	Description
items		An array of strings or objects to suggest.
triggerChar	@	The character that will trigger the menu behavior.
labelKey	label	The field to be used as the item label (when the items are objects).
disableSort	false	Disable sorting of suggested items.
disableSearch	false	Disable internal filtering (only useful if async search is used).
dropUp	false	Show the menu above the cursor instead of below.
maxItems	∞	Limit the number of items shown in the text. The default is no limit.
mentionSelect		A function to format the selected item before inserting the text.
mentionFilter		A function that returns the items to display.
allowSpace	false	Allow spaces while mentioning.
returnTrigger	false	Include the trigger char in the searchTerm event.

For Example:

<input type="text" [mention]="items" [mentionConfig]="{triggerChar:'#',maxItems:10,labelKey:'name'}">

Output Events

The following output events can be used.

Output	Description
`@Output() searchTerm EventEmitter<string>`	Emitted whenever the search term changes. Can be used to trigger async search.
`@Output() itemSelected EventEmitter<any>`	Emitted when an item is selected.
`@Output() opened EventEmitter<void>`	Emitted when the mentions panel is opened.
`@Output() closed EventEmitter<void>`	Emitted when the mentions panel is closed.

Item Templates

The appearance of the items displayed in the mention list menu can be customized using the [mentionListTemplate] directive as shown in this example:

https://stackblitz.com/edit/angular-mentions-avatar

Alternative Usage

Instead of using the [mentions] directive, the component can also be used by only specifying [mentionConfig], for example:

<input type="text" [mentionConfig]="mentionConfig">

With the following structure:

let mentionConfig = {
    items: [ "Noah", "Liam", "Mason", "Jacob", ... ],
    triggerChar: "@",
    ...
}

In this way, multiple config objects can be used:

let mentionConfig = {
    mentions: [
        {
            items: [ "Noah", "Liam", "Mason", "Jacob", ... ],
            triggerChar: '@'
        },
        {
            items: [ "Red", "Yellow", "Green", ... ],
            triggerChar: '#'
        }
    ]
}

This allows different lists and trigger characters to be configured.

Note that because objects are mutable, changes to the items within the config will not be picked up unless a new mentionConfig object is created.

saif003/angular-cascadable-mentions