P autocomplete primeng

P autocomplete primeng DEFAULT

Primeng Autocomplete Angular tutorial with examples

In this blog post, We are going to learn Implement Autocomplete feature of Primeng in Angular with an example.

Angular Autocomplete Component 

Autocomplete is a User interface feature and it contains an Input text box and allows the developer to type text, and application search and display the matched words results for typed characters and give complete word prediction list.

This is helpfull for User to search and select instead of typing in text box.

This is a basic UI element on every UI framework provides.

Primeng provides as an angular component.

Create angular application using CLI

First, create an angular application using Angular CLI.

You can check my previous post on Angular application generation from scratch and also about Primeng Integration example of Angular.

This article does not talk about the angular application structure and primeng integration.

Please find below other tutorials of Primeng.

This article code works on angular 10/11/12/13 versions.

The latest Angular version is preferable for Primeng framework.

Import AutoCompleteModule module

Primeng provides autocomplete feature via . So, you have to import this module in your application module. app.module.ts file. Import autocomplete module and configure Imports section of NgModule configuration

app.module.ts

Application Component Configuration -app.component.ts  

In Application Component, Need to provide data as well as method or function that checks against typed keyword

Template HTML Changes - app.component.html

In the template HTML changes,

  • Configured two-way binding using ngModel attribute
  • And also added suggestions attribute for list of suggestions for typed query.
  • Complete Method method will be fired when the user typed a key
  • It has a parameter of the event. query parameters which contain the typed keyword.
  • This method returns the matched query list of content and updates to suggestions binding

Output primeng angular autocomplete example

How to add Dropdown to autocomplete component?

By default, This is set to false. It displays a button next to textbox if dropdown change to true.

You can check output of configuring dropdown property

Angular Primeng Autocomplete dropdown example

How to select multiple elements in autocomplete ? 

Multiple values can be selected by setting multiple properties to true. Two-way binding attribute also should be a String array instead of a single string.

i.e selectNumber: string[]; instead of selectNumber: string;

Please see the output of the above

primeng angular autocomplete multiple values select

How to bind an object and ng-template Example 

We saw aboves example how simple strings can be populated.

We can also populate Object binding using field property.

In the Object, We have id, name and department fields.

The object is matched with name field with typed word.

Field defines the label of the object that needs to display.

ng-template tag allows the component to display custom content. In this example displaying name and department as the custom template 

app.component.ts

app.component.html

You can check the output

angular primeng autocomplete object example

Conclusion

You learned integration of autocomplete component integration in Angular component and learned few features.

Sours: https://www.cloudhadoop.com//09/primeng-autocomplete-angular-example.html
import{NgModule,Component,ViewChild,ElementRef,AfterViewChecked,AfterContentInit,OnDestroy,Input,Output,EventEmitter,ContentChildren,QueryList,TemplateRef,Renderer2,forwardRef,ChangeDetectorRef,IterableDiffers,ChangeDetectionStrategy,ViewEncapsulation}from'@angular/core';import{CommonModule}from'@angular/common';import{trigger,style,transition,animate,AnimationEvent}from'@angular/animations';import{InputTextModule}from'primeng/inputtext';import{ButtonModule}from'primeng/button';import{RippleModule}from'primeng/ripple';import{SharedModule,PrimeTemplate,TranslationKeys,PrimeNGConfig,OverlayService}from'primeng/api';import{DomHandler,ConnectedOverlayScrollHandler}from'primeng/dom';import{ObjectUtils,UniqueComponentId,ZIndexUtils}from'primeng/utils';import{NG_VALUE_ACCESSOR,ControlValueAccessor}from'@angular/forms';import{CdkVirtualScrollViewport,ScrollingModule}from'@angular/cdk/scrolling';exportconstAUTOCOMPLETE_VALUE_ACCESSOR: any={provide: NG_VALUE_ACCESSOR,useExisting: forwardRef(()=>AutoComplete),multi: true};@Component({selector: 'p-autoComplete',template: ` <span #container [ngClass]="{'p-autocomplete p-component':true,'p-autocomplete-dd':dropdown,'p-autocomplete-multiple':multiple}" [ngStyle]="style" [class]="styleClass"> <input *ngIf="!multiple" #in [attr.type]="type" [attr.id]="inputId" [ngStyle]="inputStyle" [class]="inputStyleClass" [autocomplete]="autocomplete" [attr.required]="required" [attr.name]="name" class="p-autocomplete-input p-inputtext p-component" [ngClass]="{'p-autocomplete-dd-input':dropdown,'p-disabled': disabled}" [value]="inputFieldValue" aria-autocomplete="list" [attr.aria-controls]="listId" role="searchbox" [attr.aria-expanded]="overlayVisible" aria-haspopup="true" [attr.aria-activedescendant]="'p-highlighted-option'" (click)="onInputClick($event)" (input)="onInput($event)" (keydown)="onKeydown($event)" (keyup)="onKeyup($event)" [attr.autofocus]="autofocus" (focus)="onInputFocus($event)" (blur)="onInputBlur($event)" (change)="onInputChange($event)" (paste)="onInputPaste($event)" [attr.placeholder]="placeholder" [attr.size]="size" [attr.maxlength]="maxlength" [attr.tabindex]="tabindex" [readonly]="readonly" [disabled]="disabled" [attr.aria-label]="ariaLabel" [attr.aria-labelledby]="ariaLabelledBy" [attr.aria-required]="required" ><ul *ngIf="multiple" #multiContainer class="p-autocomplete-multiple-container p-component p-inputtext" [ngClass]="{'p-disabled':disabled,'p-focus':focus}" (click)="multiIn.focus()"> <li #token *ngFor="let val of value" class="p-autocomplete-token"> <ng-container *ngTemplateOutlet="selectedItemTemplate; context: {$implicit: val}"></ng-container> <span *ngIf="!selectedItemTemplate" class="p-autocomplete-token-label">{{resolveFieldData(val)}}</span> <span class="p-autocomplete-token-icon pi pi-times-circle" (click)="removeItem(token)" *ngIf="!disabled && !readonly"></span> </li> <li class="p-autocomplete-input-token"> <input #multiIn [attr.type]="type" [attr.id]="inputId" [disabled]="disabled" [attr.placeholder]="(value&&value.length ? null : placeholder)" [attr.tabindex]="tabindex" [attr.maxlength]="maxlength" (input)="onInput($event)" (click)="onInputClick($event)" (keydown)="onKeydown($event)" [readonly]="readonly" (keyup)="onKeyup($event)" [attr.autofocus]="autofocus" (focus)="onInputFocus($event)" (blur)="onInputBlur($event)" (change)="onInputChange($event)" (paste)="onInputPaste($event)" [autocomplete]="autocomplete" [ngStyle]="inputStyle" [class]="inputStyleClass" [attr.aria-label]="ariaLabel" [attr.aria-labelledby]="ariaLabelledBy" [attr.aria-required]="required" aria-autocomplete="list" [attr.aria-controls]="listId" role="searchbox" [attr.aria-expanded]="overlayVisible" aria-haspopup="true" [attr.aria-activedescendant]="'p-highlighted-option'"> </li> </ul> <i *ngIf="loading" class="p-autocomplete-loader pi pi-spinner pi-spin"></i><button #ddBtn type="button" pButton [icon]="dropdownIcon" [attr.aria-label]="dropdownAriaLabel" class="p-autocomplete-dropdown" [disabled]="disabled" pRipple (click)="handleDropdownClick($event)" *ngIf="dropdown" [attr.tabindex]="tabindex"></button> <div #panel *ngIf="overlayVisible" (click)="onOverlayClick($event)" [ngClass]="['p-autocomplete-panel p-component']" [style.max-height]="virtualScroll ? 'auto' : scrollHeight" [ngStyle]="panelStyle" [class]="panelStyleClass" [@overlayAnimation]="{value: 'visible', params: {showTransitionParams: showTransitionOptions, hideTransitionParams: hideTransitionOptions}}" (@overlayAnimation.start)="onOverlayAnimationStart($event)" (@overlayAnimation.done)="onOverlayAnimationEnd($event)"> <ng-container *ngTemplateOutlet="headerTemplate"></ng-container> <ul role="listbox" [attr.id]="listId" class="p-autocomplete-items" [ngClass]="{'p-autocomplete-virtualscroll': virtualScroll}"> <ng-container *ngIf="group"> <ng-template ngFor let-optgroup [ngForOf]="suggestions"> <li class="p-autocomplete-item-group"> <span *ngIf="!groupTemplate">{{getOptionGroupLabel(optgroup)||'empty'}}</span> <ng-container *ngTemplateOutlet="groupTemplate; context: {$implicit: optgroup}"></ng-container> </li> <ng-container *ngTemplateOutlet="itemslist; context: {$implicit: getOptionGroupChildren(optgroup)}"></ng-container> </ng-template> </ng-container> <ng-container *ngIf="!group"> <ng-container *ngTemplateOutlet="itemslist; context: {$implicit: suggestions}"></ng-container> </ng-container> <ng-template #itemslist let-suggestionsToDisplay> <ng-container *ngIf="!virtualScroll; else virtualScrollList"> <li role="option" *ngFor="let option of suggestionsToDisplay; let idx = index" class="p-autocomplete-item" pRipple [ngClass]="{'p-highlight': (option === highlightOption)}" [id]="highlightOption == option ? 'p-highlighted-option':''" (click)="selectItem(option)"> <span *ngIf="!itemTemplate">{{resolveFieldData(option)}}</span> <ng-container *ngTemplateOutlet="itemTemplate; context: {$implicit: option, index: idx}"></ng-container> </li> </ng-container> <ng-template #virtualScrollList> <cdk-virtual-scroll-viewport [ngStyle]="{'height': scrollHeight}" [itemSize]="itemSize" *ngIf="virtualScroll && !noResults"> <ng-container *cdkVirtualFor="let option of suggestionsToDisplay; let i = index; let c = count; let f = first; let l = last; let e = even; let o = odd"> <li role="option" class="p-autocomplete-item" pRipple [ngClass]="{'p-highlight': (option === highlightOption)}" [ngStyle]="{'height': itemSize + 'px'}" [id]="highlightOption == option ? 'p-highlighted-option':''" (click)="selectItem(option)"> <span *ngIf="!itemTemplate">{{resolveFieldData(option)}}</span> <ng-container *ngTemplateOutlet="itemTemplate; context: {$implicit: option, index: i}"></ng-container> </li> </ng-container> </cdk-virtual-scroll-viewport> </ng-template> <li *ngIf="noResults && showEmptyMessage" class="p-autocomplete-empty-message"> <ng-container *ngIf="!emptyTemplate; else empty"> {{emptyMessageLabel}} </ng-container> <ng-container #empty *ngTemplateOutlet="emptyTemplate"></ng-container> </li> </ng-template> </ul> <ng-container *ngTemplateOutlet="footerTemplate"></ng-container> </div> </span> `,animations: [trigger('overlayAnimation',[transition(':enter',[style({opacity: 0,transform: 'scaleY()'}),animate('{{showTransitionParams}}')]),transition(':leave',[animate('{{hideTransitionParams}}',style({opacity: 0}))])])],host: {'class': 'p-element p-inputwrapper','[class.p-inputwrapper-filled]': 'filled','[class.p-inputwrapper-focus]': '(focus && !disabled) || overlayVisible'},providers: [AUTOCOMPLETE_VALUE_ACCESSOR],changeDetection: ChangeDetectionStrategy.OnPush,encapsulation: ViewEncapsulation.None,styleUrls: ['./autocomplete.css']})exportclassAutoCompleteimplementsAfterViewChecked,AfterContentInit,OnDestroy,ControlValueAccessor{ @Input()minLength: number=1; @Input()delay: number=; @Input()style: any; @Input()panelStyle: any; @Input()styleClass: string; @Input()panelStyleClass: string; @Input()inputStyle: any; @Input()inputId: string; @Input()inputStyleClass: string; @Input()placeholder: string; @Input()readonly: boolean; @Input()disabled: boolean; @Input()virtualScroll: boolean; @Input()itemSize: number; @Input()maxlength: number; @Input()name: string; @Input()required: boolean; @Input()size: number; @Input()appendTo: any; @Input()autoHighlight: boolean; @Input()forceSelection: boolean; @Input()type: string='text'; @Input()autoZIndex: boolean=true; @Input()baseZIndex: number=0; @Input()ariaLabel: string; @Input()dropdownAriaLabel: string; @Input()ariaLabelledBy: string; @Input()dropdownIcon: string="pi pi-chevron-down"; @Input()unique: boolean=true; @Input()group: boolean; @Input()completeOnFocus: boolean=false; @Output()completeMethod: EventEmitter<any>=newEventEmitter(); @Output()onSelect: EventEmitter<any>=newEventEmitter(); @Output()onUnselect: EventEmitter<any>=newEventEmitter(); @Output()onFocus: EventEmitter<any>=newEventEmitter(); @Output()onBlur: EventEmitter<any>=newEventEmitter(); @Output()onDropdownClick: EventEmitter<any>=newEventEmitter(); @Output()onClear: EventEmitter<any>=newEventEmitter(); @Output()onKeyUp: EventEmitter<any>=newEventEmitter(); @Output()onShow: EventEmitter<any>=newEventEmitter(); @Output()onHide: EventEmitter<any>=newEventEmitter(); @Input()field: string; @Input()scrollHeight: string='px'; @Input()dropdown: boolean; @Input()showEmptyMessage: boolean; @Input()dropdownMode: string='blank'; @Input()multiple: boolean; @Input()tabindex: number; @Input()dataKey: string; @Input()emptyMessage: string; @Input()showTransitionOptions: string='s cubic-bezier(0, 0, , 1)'; @Input()hideTransitionOptions: string='.1s linear'; @Input()autofocus: boolean; @Input()autocomplete: string='off'; @Input()optionGroupChildren: string; @Input()optionGroupLabel: string; @ViewChild('container')containerEL: ElementRef; @ViewChild('in')inputEL: ElementRef; @ViewChild('multiIn')multiInputEL: ElementRef; @ViewChild('multiContainer')multiContainerEL: ElementRef; @ViewChild('ddBtn')dropdownButton: ElementRef; @ViewChild(CdkVirtualScrollViewport)viewPort: CdkVirtualScrollViewport; @ContentChildren(PrimeTemplate)templates: QueryList<any>;overlay: HTMLDivElement;itemsWrapper: HTMLDivElement;itemTemplate: TemplateRef<any>;emptyTemplate: TemplateRef<any>;headerTemplate: TemplateRef<any>;footerTemplate: TemplateRef<any>;selectedItemTemplate: TemplateRef<any>;groupTemplate: TemplateRef<any>;value: any;_suggestions: any[];onModelChange: Function=()=>{};onModelTouched: Function=()=>{};timeout: any;overlayVisible: boolean=false;documentClickListener: any;suggestionsUpdated: boolean;highlightOption: any;highlightOptionChanged: boolean;focus: boolean=false;filled: boolean;inputClick: boolean;inputKeyDown: boolean;noResults: boolean;differ: any;inputFieldValue: string=null;loading: boolean;scrollHandler: any;documentResizeListener: any;forceSelectionUpdateModelTimeout: any;listId: string;itemClicked: boolean;virtualScrollSelectedIndex: number;constructor(publicel: ElementRef,publicrenderer: Renderer2,publiccd: ChangeDetectorRef,publicdiffers: IterableDiffers,publicconfig: PrimeNGConfig,publicoverlayService: OverlayService){this.differ=differs.find([]).create(null);this.listId=UniqueComponentId()+'_list';} @Input()getsuggestions(): any[]{returnthis._suggestions;}setsuggestions(val:any[]){this._suggestions=val;this.handleSuggestionsChange();}ngAfterViewChecked(){//Use timeouts as since Angular , AfterViewChecked is broken and not called after panel is updatedif(this.suggestionsUpdated&&this.overlay&&this.overlay.offsetParent){setTimeout(()=>{if(this.overlay){this.alignOverlay();}},1);this.suggestionsUpdated=false;}if(this.highlightOptionChanged){setTimeout(()=>{if(this.overlay&&this.itemsWrapper){letlistItem=DomHandler.findSingle(this.overlay,'li.p-highlight');if(listItem){DomHandler.scrollInView(this.itemsWrapper,listItem);}if(this.virtualScroll&&this.viewPort){letrange=this.viewPort.getRenderedRange();this.updateVirtualScrollSelectedIndex();if(range.start>this.virtualScrollSelectedIndex||range.end<this.virtualScrollSelectedIndex){this.viewPort.scrollToIndex(this.virtualScrollSelectedIndex);}}}},1);this.highlightOptionChanged=false;}}handleSuggestionsChange(){if(this._suggestions!=null&&this.loading){this.highlightOption=null;if(this._suggestions.length){this.noResults=false;this.show();this.suggestionsUpdated=true;if(this.autoHighlight){this.highlightOption=this._suggestions[0];}}else{this.noResults=true;if(this.showEmptyMessage){this.show();this.suggestionsUpdated=true;}else{this.hide();}}this.loading=false;}}ngAfterContentInit(){this.templates.forEach((item)=>{switch(item.getType()){case'item':this.itemTemplate=item.template;break;case'group':this.groupTemplate=item.template;break;case'selectedItem':this.selectedItemTemplate=item.template;
Sours: https://github.com/primefaces/primeng/blob/master/src/app/components/autocomplete/autocomplete.ts
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primefaces / primeng Public

Current behavior
The p-autocomplete component has the autocomplete attribute set to off by default. However, even with this value, Google Chrome's autocompletion is still displayed, causing the problem shown in the third image (Chrome's autocompletion appears over the component list).

inspect_element

chrome_autofill

image

Expected behavior
The expected behavior is Google Chrome's autocompletion not being displayed, but after some research, I found out that Chrome ignores the autocomplete property when it is set to "off".

To fix this, I created a new @input in the p-autocomplete component and associated the autocomplete HTML property with it, in a way that the developer is able to send a value that actually disables Chrome's autocompletion.

Please take a look at PR #

References:
https://stackoverflow.com/questions//disabling-chrome-autofill
https://bugs.chromium.org/p/chromium/issues/detail?id=#c7

  • Angular version: 7.X

  • PrimeNG version: 7.X

  • Browser: [Chrome]

  • Language: [all]

Sours: https://github.com/primefaces/primeng/issues/

(must evaluate to ) Unique identifier of the component in a namingContainer.
(must evaluate to ) Boolean value to specify the rendering of the component, when set to false component will not be rendered.
(must evaluate to ) An el expression referring to a server side UIComponent instance in a backing bean.
(must evaluate to ) Value of the component.
(must evaluate to ) An el expression or a literal text that defines a converter for the component. When it's an EL expression, it's resolved to a converter instance. In case it's a static text, it must refer to a converter id.
(must evaluate to ) When set true, process validations logic is executed at apply request values phase for this component. Default is false.
(must evaluate to ) Marks component as required.
(must evaluate to ) A method expression referring to a method validationg the input.
(must evaluate to ) A method binding expression referring to a method for handling a valuchangeevent.
(must evaluate to ) Message to display when required field validation fails.
(must evaluate to ) Message to display when conversion fails.
(must evaluate to ) Message to display when validation fails.
(must evaluate to ) Access key to transfer focus to the input element.
(must evaluate to ) Alternate textual description of the input element.
(must evaluate to ) Controls browser autocomplete behavior.
(must evaluate to ) Direction indication for text that does not inherit directionality.
(must evaluate to ) Disables the input element, default is false.
(must evaluate to ) A localized user presentable name.
(must evaluate to ) A localized user presentable name.
(must evaluate to ) Maximum number of characters that may be entered in this field.
(must evaluate to ) Client side callback to execute when input element loses focus.
(must evaluate to ) Client side callback to execute when input element loses focus and its value has been modified since gaining focus.
(must evaluate to ) Client side callback to execute when input element is clicked.
(must evaluate to ) Client side callback to execute when input element is double clicked.
(must evaluate to ) Client side callback to execute when input element receives focus.
(must evaluate to ) Client side callback to execute when a key is pressed down over input element.
(must evaluate to ) Client side callback to execute when a key is pressed and released over input element.
(must evaluate to ) Client side callback to execute when a key is released over input element.
(must evaluate to ) Client side callback to execute when a pointer input element is pressed down over input element.
(must evaluate to ) Client side callback to execute when a pointer input element is moved within input element.
(must evaluate to ) Client side callback to execute when a pointer input element is moved away from input element.
(must evaluate to ) Client side callback to execute when a pointer input element is moved onto input element.
(must evaluate to ) Client side callback to execute when a pointer input element is released over input element.
(must evaluate to ) Client side callback to execute when text within input element is selected by user.
(must evaluate to ) Flag indicating that this input element will prevent changes by the user.
(must evaluate to ) Number of characters used to determine the width of the input element.
(must evaluate to ) Inline style of the input element.
(must evaluate to ) Style class of the input element.
(must evaluate to ) Advisory tooltip information.
(must evaluate to ) Advisory tooltip information.
(must evaluate to ) Name of the client side widget.
(must evaluate to ) Method providing suggestions.
(must evaluate to ) Name of the iterator used in pojo based suggestion.
(must evaluate to ) Label of the item.
(must evaluate to ) Value of the item.
(must evaluate to ) Maximum number of results to be displayed. Default is unlimited.
(must evaluate to ) Number of characters to be typed before starting to query. Default is 1.
(must evaluate to ) Delay to wait in milliseconds before sending each query to the server. Default is
(must evaluate to ) When enabled, autoComplete only accepts input from the selection list. Default is false.
(must evaluate to ) Client side callback to execute before ajax request to load suggestions begins.
(must evaluate to ) Client side callback to execute after ajax request to load suggestions completes.
(must evaluate to ) Defines whether to trigger ajaxStatus or not. Default is true.
(must evaluate to ) Defines the height of the viewport for autocomplete suggestions.
(must evaluate to ) No Description
(must evaluate to ) No Description
(must evaluate to ) No Description
(must evaluate to ) No Description
(must evaluate to ) No Description
(must evaluate to ) No Description
(must evaluate to ) Component(s) to process during autocomplete request.
Sours: https://www.primefaces.org/docs/vdl//primefaces-p/autoComplete.html

Primeng p autocomplete

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AutoComplete in PrimeNG (Part 05)

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