angular autocomplete/typeahead component
npm install @tibelian/ng2-completersh
npm install ng2-completer --save
`
Usage
The module you want to use ng2-completer in must import Ng2CompleterModule and FormsModule (to use the ngModel
directive on ng2-completer). Ng2CompleterModule provides the CompleterService, and declares the ng2-completer
directive.
`ts
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from "@angular/forms";
import { HttpClientModule } from "@angular/common/http";
import { AppComponent } from './app.component';
import { Ng2CompleterModule } from "ng2-completer";
@NgModule({
imports: [
BrowserModule,
FormsModule,
HttpClientModule,
Ng2CompleterModule,
],
declarations: [ AppComponent ],
bootstrap: [ AppComponent ]
})
export class AppModule { }
`
Add ng2-completer to your component and create a data source:
`ts
import { Component } from '@angular/core';
import { CompleterService, CompleterData } from 'ng2-completer';
@Component({
selector: 'my-component',
template:
})
export class MyComponent {
protected searchStr: string;
protected captain: string;
protected dataService: CompleterData;
protected searchData = [
{ color: 'red', value: '#f00' },
{ color: 'green', value: '#0f0' },
{ color: 'blue', value: '#00f' },
{ color: 'cyan', value: '#0ff' },
{ color: 'magenta', value: '#f0f' },
{ color: 'yellow', value: '#ff0' },
{ color: 'black', value: '#000' }
];
protected captains = ['James T. Kirk', 'Benjamin Sisko', 'Jean-Luc Picard', 'Spock', 'Jonathan Archer', 'Hikaru Sulu', 'Christopher Pike', 'Rachel Garrett' ];
constructor(private completerService: CompleterService) {
this.dataService = completerService.local(this.searchData, 'color', 'color');
}
}
`
ng2-completer uses rxjs stream as data sources.
There are 2 ready made data sources that can be used to fetch local and remote data but it's also possible to provide
a custom source that generates a stream of items.
$3
Add the following to System.js map configuration:
`ts
var map = {
...
'ng2-completer': 'node_modules/ng2-completer/ng2-completer.umd.js'
}
`
API
$3
|Attribute|Description|Type|Required|Default|
|:--- |:--- |:--- |:--- |:--- |
|datasource|Autocomplete list data source can be an array of strings or a URL that results in an array of strings or a CompleterData object|Array\\|string\|CompleterData|Yes||
|dataService|Deprecated use datasource instead. Autocomplete list data source.|CompleterData|Yes||
|ngModel| see the angular forms API.|string|Yes||
|autoMatch|Auto select an item if it is the only result and it is an exact match of the search text.|boolean|No|false
|autofocus|Set input focus when the page loads|boolean|No|false
|clearUnselected|Clear the input on blur if not selected.|boolean|No|false|
|clearSelected|Clear the input when a result is selected.|boolean|No|false|
|disableInput|If true disable the input field.|boolean|No|false|
|fieldTabindex|Set the tabIndex of the input.|number|No||
|initialValue|Initial value for the component. Value is parsed using: titleField, descriptionField and imageField and used as selected value|any|No||
|inputId|id attribute of the input element.|string|No||
|inputName|name attribute of the input element.|string|No||
|inputClass| class attribute of the input element.|string|No||
|matchClass|CSS class to apply for matching part of the title and description.|string|No||
|maxChars|Maximal number of characters that the user can type in the component.|number|No|524288|
|minSearchLength|Minimal number of characters required for searching.|number|No|3|
|overrideSuggested|If true will override suggested and set the model with the value in the input field.|boolean|No|false|
|openOnFocus|If true will open the dropdown and perform search when the input gets the focus.|boolean|No|false|
|openOnClick|If true will open and close the dropdown by click.|boolean|No|false|
|selectOnFocus|If true will select the input text upon focus.|boolean|No|false|
|selectOnClick|If true will select the input text by click.|boolean|No|false|
|fillHighlighted|If true will set the model with the value in the input field when item is highlighted.|boolean|No|true|
|pause|Number of msec. to wait before searching.|number|No|250|
|placeholder|Placeholder text for the search field.|string|No||
|textNoResults|Text displayed when the search returned no results. if the string is falsy it won't be displayed|string|No|
|textSearching|Text displayed while search is active. if the string is falsy it won't be displayed|string|No|Searching...|
|autoHighlight|Automatically highlight the best matching search result when the input changes. the "best match" is selected by: exact match, starts with and finally includes|boolean|No|false|
$3
|Name|Description|Type|
|:--- |:--- |:--- |
|selected|emitted when an item is selected.|(selected: CompleterItem): void|
|highlighted|emitted when an item is highlighted.|(highlighted: CompleterItem): void|
|focus|emitted when the input gets focus|(): void|
|blur|emitted when the input looses focus|(): void|
|opened|emitted when the dropdown is opened or closed|(isOpen: boolean): void|
|keyup|emitted when the input emits keyup|(event: any): void|
|keydown|emitted when the input emits keydown|(event: any): void|
$3
|Method|Description|Parameters|
|:--- |:--- |:--- |
|open()|Open the dropdown| |
|close()|Close the dropdown| |
|focus()|Set the focus to the completer input| |
|blur()|Remove the focus from the completer input| |
|isOpen()|Returns the state of the dropdown| |
$3
Create local data provider by calling CompleterService.local.
#### Parameters
|Name|Type|Description|Required|
|:---|:---|:--- |:--- |
|data|any[] \| Observable|A JSON array with the data to use or an Observable that emits one|Yes|
|searchFields|string|Comma separated list of fields to search on. Fields may contain dots for nested attributes; if empty or null all data will be returned.|Yes|
|titleField|string|Name of the field to use as title for the list item.|Yes|
#### Attributes
|Name|Type|Description|
|:---|:---|:--- |
|descriptionField|string|Name of the field to use as description for the list item.|
|imageField|string|Name of the field to use as image url for the list item.|
$3
Create remote data provider by calling CompleterService.remote.
#### Parameters
|Name|Type|Description|Required|
|:---|:---|:--- |:--- |
|url|string|Base url for the search|Yes|
|searchFields|string|Comma separated list of fields to search on. Fields may contain dots for nested attributes; if empty or null all data will be returned.|Yes|
|titleField|string|Name of the field to use as title for the list item.|Yes|
#### Attributes
|Name|Type|Description|
|:---|:---|:--- |
|descriptionField|string|Name of the field to use as description for the list item.|
|imageField|string|Name of the field to use as image url for the list item.|
|urlFormater|(term: string) => string|Function that get's the searchterm and returns the search url before each search.|
|dataField|string|The field in the response that includes the data.|
|requestOptions|RequestOptions (@angular/common/http)|HTTP request options that should be sent with the search request.|
$3
* .completer-holder
* .completer-input
* .completer-dropdown-holder
* .completer-dropdown
* .completer-searching
* .completer-no-results
* .completer-row
* .completer-image-holder
* .completer-image
* .completer-image-default
* .completer-title
* .completer-description
* .completer-list-item-holder
* .completer-list-item
* .completer-selected-row`