D-Net

import {Component, ElementRef, Input, Output, EventEmitter, OnChanges, SimpleChange} from '@angular/core';

import {ISVocabulariesService} from './ISVocabularies.service';

import {RefineFieldResultsService} from '../../services/refineFieldResults.service';

import{EnvProperties} from '../../utils/properties/env-properties';

//Usage example

//<static-autocomplete [(filtered)] =filtered [(selected)] =selected placeHolderMessage = "Search for countries" title = "Countries:" (keywordChange)="keywordChanged($event)"></static-autocomplete>

@Component({

    selector: 'static-autocomplete',

    host: {

       '(document:click)': 'handleClick($event)',

   },

    template: `

        <div class="custom-autocomplete uk-width-1-1">

            <div   *ngIf = "showSelected && selectedValue != ''">

              <div  class="uk-alert-default uk-grid uk-margin-small-left uk-margin-remove-bottom uk-margin-remove-left" data-uk-alert=""  *ngFor="let item of selected"  [title]="showItem(item)"> 

                <div class="uk-width-expand uk-padding-remove-left " >{{showItem(item)}} </div>

                <div (click)="remove(item)" aria-hidden="true" title="Remove selection" class="uk-padding-remove-left">

                  <span class="clickable uk-icon"><svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg" icon="close" ratio="1"><path fill="none" stroke="#000" stroke-width="1.06" d="M16,16 L4,4"></path><path fill="none" stroke="#000" stroke-width="1.06" d="M16,4 L4,16"></path></svg></span>

                </div>

              </div>

            </div>

            <input *ngIf = "showInput " type="text" class="auto-complete-input validate filter-input input-sm form-control uk-input" [placeholder]=placeHolderMessage [(ngModel)]=keyword (keyup)=filter() (blur)="keyword = ''"   >

            <!--span [style.display]="showLoading ? 'inline' : 'none'" class="uk-alert uk-alert-primary" data-uk-alert=""> <i class="uk-icon-spinner"></i> Loading... </span>

            <span *ngIf="warningMessage.length > 0" class="uk-alert uk-alert-warning" data-uk-alert=""> {{warningMessage}} <a href="" class="uk-alert-close uk-close"></a></span-->

            <div  *ngIf="focus && showInput"  class="uk-dropdown" aria-expanded="true" style="display:block" >

                  <ul class="uk-nav uk-nav-autocomplete uk-autocomplete-results" >

                      <li>

                      <span [style.display]="showLoading ? 'inline' : 'none'" class="uk-alert uk-alert-primary" data-uk-alert=""> <i class="uk-icon-spinner"></i> Loading... </span>

                      <span *ngIf="filtered.length > 0"  >  {{results | number}} results found:</span>

                      <span *ngIf="filtered.length == 0" class="uk-alert uk-alert-primary" data-uk-alert=""> No results found</span>

                      </li>

                      <li    *ngFor=" let item of filtered">

                          <a (click)="select(item)"  [title]="showItem(item)" style="text-overflow: ellipsis; ">{{showItem(item)}}</a>

                      </li>

                  </ul>

            </div>

        </div>

        `

})

export class StaticAutoCompleteComponent implements OnChanges{

    @Input() placeHolderMessage = "Search for entries";

    @Input() title = "Autocomplete";

    @Output() addItem = new EventEmitter(); // when selected list  changes update parent component

    @Output() selectedValueChanged = new EventEmitter(); // when changed  a method for filtering will be called

    @Output() updateValueLabel = new EventEmitter(); //when the value is id sends  an event to update the value (for meta tags)

    @Output() listUpdated = new EventEmitter(); // when changed  a method for filtering will be called

    @Input() public list = []; // the entries resulted after filtering function

    @Input() public filtered = []; // the entries resulted after filtering function

    @Input() public selected = []; // the entries selected from user

    @Input() public keywordlimit = 3; // the minimum length of keyword

    @Input() public showSelected = true; // the minimum length of keyword

    @Input() public multipleSelections:boolean = true;

    @Input() public allowDuplicates:boolean = false;

    @Input() public selectedValue:string = '';

    @Input() public vocabularyId:string ;

    @Input() public fieldName:string ;

    @Input() public entityName:string ;

    @Input() public fieldId:string ;

    @Input() properties:EnvProperties;

    @Input() public keyword = '';

    @Input() public type = 'search' //search, result, context, project

    public warningMessage = "";

    public infoMessage = "";

    public showLoading:boolean = false;

    public tries = 0;

    public showInput = true;

    public sub;

    public done = false;

    public results = 0;

    public focus:boolean  = false;

    public currentFieldId: string ;

    constructor ( private _vocabulariesService: ISVocabulariesService,private _refineService: RefineFieldResultsService, private myElement: ElementRef) {

            this.currentFieldId=this.fieldId;

    }

    ngOnDestroy(){

      if(this.sub){

        this.sub.unsubscribe();

      }

      this._vocabulariesService.clearSubscriptions();

    }

    ngOnChanges(changes: {[propKey: string]: SimpleChange}) {

         if(this.currentFieldId!=this.fieldId){ //this is going to be called when

          this.currentFieldId=this.fieldId;

          this.initialize();

        }

    }

    private initialize(){

      this.showInput = true;

      if(this.list == undefined || this.list.length == 0){

        this.showLoading = true;

       if(this.vocabularyId){

        // this.list = this._vocabulariesService.getVocabularyByType(this.vocabularyId, this.entityName);

        // this.afterListFetchedActions();

        this.sub = this._vocabulariesService.getVocabularyByType(this.vocabularyId, this.entityName, this.properties).subscribe(

            data => {

              if(data) {

                this.list = (this.vocabularyId == "type" && this.entityName == "result" && data.length == 2) ? data[0].concat(data[1]) : data;

                this.afterListFetchedActions();

              } else {

                this.handleError("Error getting vocabulary with id: "+this.vocabularyId+" for "+this.entityName);

                this.warningMessage = "An Error occurred..."

              }

            }

        );

      }else if(this.fieldName && this.entityName){

        this.sub = this._refineService.getRefineFieldResultsByFieldName(this.fieldName,this.entityName, this.properties).subscribe(

            data => {

                this.list  = data;

                this.afterListFetchedActions();

            },

            err => {

                //console.log(err);

                this.handleError("Error getting results for refine field: "+this.fieldName+" for "+this.entityName, err);

                this.warningMessage = "An Error occured..."

            }

        );

      }else{

        this.showLoading = false;

      }

    }else{

      this.afterListFetchedActions();

    }

    }

    public updateList(list){ // used in claim context autocomplete

      this.list = list;

      this.afterListFetchedActions()

    }

    private afterListFetchedActions(){

      this.showLoading = false;

      this.getSelectedNameFromGivenId();

      this.listUpdated.emit({

          value: this.list

      });

      if(this.list == null || this.list.length == 0 ){

        this.warningMessage = "No results available";

        return;

      }

      this.done = true;

      if(this.keyword != ""){

        this.filter();

      }

    }

    filter() {

      this.focus = true;

      if(this.done){

        this.infoMessage = "";

        this.filtered = [];

        if(this.keyword == ""){

          var cut = 10;

          if(this.list.length < 5){

            cut = this.list.length;

          }

          this.results = this.list.length;

          this.filtered =this.list.slice(0, cut);

          this.tries = 0;

          this.warningMessage = "";

        // } else if(this.keyword && this.keyword.length < this.keywordlimit){

        //   this.tries++;

        //   if(this.tries == this.keywordlimit -1 ){

        //     this.warningMessage = "Type at least " + this.keywordlimit + " characters";

        //     this.tries = 0;

        //   }

        }else{

          this.tries = 0;

          this.warningMessage = "";

           this.filtered = this.list.filter(function(el){

              return el.label.toLowerCase().indexOf(this.keyword.toLowerCase()) > -1;

          }.bind(this));

          var cut = 10;

          if(this.filtered .length < 5){

            cut = this.list.length;

          }

          this.results = this.filtered.length;

           this.filtered =this.filtered.slice(0, cut);

        }

      }

    }

    remove(item:any){

      var index:number =this.checkIfExists(item,this.selected);

       if (index > -1) {

          this.selected.splice(index, 1);

      }

      if(!this.multipleSelections && this.selected.length == 0 ){

        this.showInput = true;

        this.selectedValue = "";

        this.selectedValueChanged.emit({

            value: this.selectedValue

        });

        this.updateValueLabel.emit({

          value:""

        });

      }

    }

    select(item:any){

      // console.log("select"+this.selected.length  + item.id + " "+ item.label);

        if(this.multipleSelections){

          var index:number =this.checkIfExists(item,this.selected);

           if (index > -1 && !this.allowDuplicates) {

              this.keyword = "";

              this.filtered.splice(0, this.filtered.length);

              return;

          }

          else{

              this.selected.push(item);

              this.keyword = "";

              this.filtered.splice(0, this.filtered.length);

              this.addItem.emit({

                  value: item

              });

          }

      }else{

        this.selected.splice(0, this.selected.length);

        this.selected.push(item);

        this.filtered.splice(0, this.filtered.length);

        this.keyword = "";

        this.showInput = false;

        this.selectedValue = item.id;

        this.selectedValueChanged.emit({

            value: this.selectedValue

        });

          this.updateValueLabel.emit({

            value:this.showItem(item)

          });

      }

    }

    private checkIfExists(item:any,list):number{

       if(item.concept && item.concept.id ){

        for (var _i = 0; _i < list.length; _i++) {

            let itemInList = list[_i];

            if(item.concept.id == itemInList.concept.id){

                 return _i;

            }

         }

      }else if(item.id){

        for (var _i = 0; _i < list.length; _i++) {

            let itemInList = list[_i];

             if(item.id == itemInList.id){

                 return _i;

            }

         }

      }

      return -1;

    }

    showItem(item:any):string{

     if (item.name){ //search

         return item.name;

      }else if( item.concept && item.concept.label){ //context

         return item.concept.label;

      }else if (item.label){ //simple

         return item.label;

      }

    }

    truncate(str:string, size:number):string{

      if(str == null){return "";}

      return (str.length > size)?str.substr(0,size)+'...':str;

    }

    private getSelectedNameFromGivenId(){

      if(this.list == null ){

        return;

      }

      this.showInput = true;

      for( var i = 0; i < this.list.length; i++){

        if(this.list[i].id == this.selectedValue){

          this.selectedValue = this.list[i].label;

          this.selected.push(this.list[i]);

          this.showInput = false;

          this.updateValueLabel.emit({

            value:this.showItem(this.list[i])

          });

          return;

        }

      }

    }

    handleClick(event){

     var clickedComponent = event.target;

     var inside = false;

     do {

         if (clickedComponent === this.myElement.nativeElement) {

             inside = true;

         }

        clickedComponent = clickedComponent.parentNode;

     } while (clickedComponent);

      if(!inside){

          this.focus =false;

          this.filtered.splice(0, this.filtered.length);

      }

  }

  private handleError(message: string, error = null) {

      console.error("Static Autocomplete (component): "+message, error);

  }

}