import {Component, ElementRef, Input, Output, EventEmitter, OnChanges, SimpleChange} from '@angular/core';
import {Observable} from 'rxjs/Observable';
import {Subject} from 'rxjs/Subject';
import {Value} from '../../searchPages/searchUtils/searchHelperClasses.class';
import {EntitiesSearchService} from './entitySearch.service';
import{EnvProperties} from '../properties/env-properties';
import 'rxjs/add/operator/debounceTime';
import 'rxjs/add/operator/distinctUntilChanged';
//Usage example
//
@Component({
selector: 'entities-autocomplete',
host: {
'(document:click)': 'handleClick($event)',
},
template: `
{{showItem(item)}}
-
Loading.....
{{warningMessage}}
{{results | number}} results found:
-
{{showItem(item)}}
No results found
An error occured
`
})
export class EntitiesAutocompleteComponent {
@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
@Input() public list = []; // 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 keyword = '';
@Input() public fieldId:string ;
@Input() public properties:EnvProperties ;
public currentFieldId: string ;
public currentFunderId: string ;
public warningMessage = "";
public infoMessage = "";
public tries = 0;
public showInput = true;
public sub;
public done = false;
public showLoading:boolean = false;
public searchTermStream = new Subject();
filtered: Observable<{}> ;
// public numFilteredResults:number = 0;
@Input() public funderId:string;
@Input() public entityType:string ;
@Input() public depositType:string ;
public results = 0;
public focus:boolean = false;
constructor (public _search:EntitiesSearchService, private myElement: ElementRef) {
this.currentFieldId=this.fieldId;
this.currentFunderId=this.funderId;
this.initialize();
}
ngOnChanges(changes: {[propKey: string]: SimpleChange}) {
if(this.currentFieldId!=this.fieldId){ //this is going to be called when
this.currentFieldId=this.fieldId;
this.initialize();
}else if(this.currentFunderId!=this.funderId){
this.currentFunderId=this.funderId;
this.initialize();
}
}
private initialize(){
this.showInput = true;
if(this.entityType == "project" && this.funderId ){
this.filtered = this.searchTermStream
.debounceTime(300).distinctUntilChanged()
.switchMap((term: string) => {
console.log("funder"+this.funderId);
var results = this._search.searchProjectsByFunder(term, (this.funderId == "0"?"":encodeURIComponent(this.funderId)), this.properties);
this.showLoading = false;
this.results = results.length;
return results;
});
}else if(this.entityType == "organization" && this.depositType ){
this.filtered = this.searchTermStream
.debounceTime(300).distinctUntilChanged()
.switchMap((term: string) => {
var results = this._search.searchByDepositType(term, this.depositType, this.properties);
this.showLoading = false;
this.results = results.length;
return results;
});
}else{
this.filtered = this.searchTermStream
.debounceTime(300)
.distinctUntilChanged()
.switchMap((term: string) => {
var results = this._search.searchByType(term, this.entityType, this.properties);
this.showLoading = false;
this.results = results.length;
return results;
});
this.getSelectedNameFromGivenId();
}
}
ngOnDestroy(){
if(this.sub && this.sub != undefined){
this.sub.unsubscribe();
}
}
search() {
this.infoMessage = "";
if(this.keyword == ""){
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.searchTermStream.next(this.keyword);
// if(this.numFilteredResults ==0){
this.showLoading = true;
this.focus = true;
// }
}
}
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
});
}
}
select(item:any){
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);
this.focus=false;
return;
}
else{
this.selected.push(item);
// this.keyword = "";
// this.filtered.splice(0, this.filtered.length);
this.addItem.emit({
value: item
});
this.focus=false;
}
}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.focus=false;
}
}
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(){
this.showInput = true;
if(this.selectedValue && this.selectedValue.length > 0 ){
this.sub = this._search.fetchByType(this.selectedValue,this.entityType, this.properties).subscribe(
data => {
this.selected.push( data[0]);
this.showInput = false;
},
err => console.log("An error occured"));
}
}
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.keyword = "";
// this.numFilteredResults = 0;
this.searchTermStream.next(this.keyword);
this.focus=false;
}
}
}