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Refactor Grid Cascading Combos sample to handle vritualized grid scenario #3500

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merged 3 commits into from
Jun 28, 2024
Merged

Refactor Grid Cascading Combos sample to handle vritualized grid scenario #3500

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e3a652a
fix(cascading-combos): bind cell value, ngIf for progress bars
ddaribo Jun 20, 2024
bf0f12e
fix(cascading-combos): assign valueKeys, more changes
ddaribo Jun 25, 2024
22455c0
Merge branch 'vnext' into bpachilova/grid-cascading-combos-fix-3499
ddaribo Jun 28, 2024
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23 changes: 13 additions & 10 deletions src/app/grid/grid-cascading-combos/grid-cascading-combos.component.html
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
<div class="grid__wrapper">
<div class="sample__header">
<igx-grid [igxPreventDocumentScroll]="true" #grid1 [data]="data" [autoGenerate]="false"
width="100%" height="500px" [primaryKey]="'ID'">
<igx-grid [igxPreventDocumentScroll]="true" #grid1 [data]="data" [autoGenerate]="false" width="100%"
height="500px" [primaryKey]="'ID'">
<igx-column field="ID" header="ID" [dataType]="'number'" width="50px">
</igx-column>
<igx-column field="Country" header="Country" [dataType]="'string'" width="220px">
<igx-column field="Country" header="Country" dataType="string" width="220px">
<ng-template igxCell let-cell="cell">
<igx-simple-combo [id]="'country-' + cell.row.data.ID" [data]="countriesData"
(selectionChanging)="countryChanging($event, cell)" placeholder="Choose Country..."
[displayKey]="'name'" width="100%">
[ngModel]="cell.value === '' ? undefined : cell.value" [valueKey]="'name'" [displayKey]="'name'"
width="100%">
</igx-simple-combo>
</ng-template>
</igx-column>
Expand All @@ -17,22 +18,24 @@
<div>
<igx-simple-combo [id]="'region-' + cell.row.data.ID"
(selectionChanging)="regionChanging($event, cell)" placeholder="Choose Region..."
[displayKey]="'name'" [(ngModel)]="cell.value"
[disabled]="cell.row.cells[1].value === ''">
[ngModel]="cell.value === '' ? undefined : cell.value" [valueKey]="'name'"
[displayKey]="'name'" [disabled]="cell.row.cells[1].value === ''">
</igx-simple-combo>
<igx-linear-bar [id]="'region-progress-' + cell.row.data.ID" [style.visibility]="'hidden'"
<igx-linear-bar *ngIf="cell.row.data.loadingRegion" [id]="'region-progress-' + cell.row.data.ID"
type="info" [indeterminate]="true">
</igx-linear-bar>
</div>
</ng-template>
</igx-column>
<igx-column field="City" header="City" width="220px" [editable]="true">
<igx-column field="City" header="City" width="220px" dataType="number">
<ng-template igxCell let-cell="cell">
<div>
<igx-simple-combo [id]="'city-' + cell.row.data.ID" placeholder="Choose City..."
[(ngModel)]="cell.value" [displayKey]="'name'" [disabled]="cell.row.cells[2].value === ''">
(selectionChanging)="cityChanging($event, cell)"
[ngModel]="!cell.value ? undefined : cell.value" [valueKey]="'id'" [displayKey]="'name'"
[disabled]="cell.row.cells[2].value === ''">
</igx-simple-combo>
<igx-linear-bar [id]="'city-progress-' + cell.row.data.ID" [style.visibility]="'hidden'"
<igx-linear-bar *ngIf="cell.row.data.loadingCity" [id]="'city-progress-' + cell.row.data.ID"
type="info" [indeterminate]="true">
</igx-linear-bar>
</div>
Expand Down
44 changes: 23 additions & 21 deletions src/app/grid/grid-cascading-combos/grid-cascading-combos.component.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import { Component, OnInit, QueryList, ViewChildren } from '@angular/core';
import { IgxSimpleComboComponent, ISimpleComboSelectionChangingEventArgs } from 'igniteui-angular';
import { City, Country, getCitiesByCountry, getCountries, Region } from '../../data/cities15000-regions-countries';
import { Country, getCitiesByCountry, getCountries } from '../../data/cities15000-regions-countries';
import { DATA } from '../../data/data';

@Component({
Expand All @@ -12,9 +12,9 @@ export class GridCascadingCombosComponent implements OnInit {
@ViewChildren(IgxSimpleComboComponent)
public combos: QueryList<IgxSimpleComboComponent>;

public selectedCountry: Country;
public selectedRegion: Region;
public selectedCity: City;
public selectedCountryName: string;
public selectedRegionName: string;
public selectedCityId: number;
public countriesData: Country[];
private loadingTime = 0;
public data;
Expand All @@ -30,62 +30,64 @@ export class GridCascadingCombosComponent implements OnInit {

public countryChanging(e: ISimpleComboSelectionChangingEventArgs, cell) {
const ID = cell.row.data.ID;
cell.row.data.loadingRegion = true;
const nextRegionCombo = this.combos.filter(
(combo) => combo.id === 'region-' + ID
)[0];
const nextCityCombo = this.combos.filter(
(combo) => combo.id === 'city-' + ID
)[0];
this.clearOldData(cell, nextRegionCombo, nextCityCombo);
this.selectedCountry = e.newValue as Country;
this.selectedCountryName = e.newValue;
cell.update(e.newValue ? e.newValue : '');
if (e.newValue) {
document.getElementById('region-progress-' + ID).style.visibility = 'visible';
this.loadingTime = 2000;
}
setTimeout(() => {
nextRegionCombo.data = getCitiesByCountry([this.selectedCountry?.name])
nextRegionCombo.data = getCitiesByCountry([this.selectedCountryName])
.map((c) => ({ name: c.region, country: c.country }))
.filter((v, i, a) => a.findIndex((r) => r.name === v.name) === i);
document.getElementById('region-progress-' + ID).style.visibility = 'hidden';
cell.row.data.loadingRegion = false;
}, this.loadingTime);
this.selectedRegion = null;
this.selectedCity = null;
this.selectedRegionName = null;
this.selectedCityId = null;
this.loadingTime = 0;
}

public regionChanging(e: ISimpleComboSelectionChangingEventArgs, cell) {
const nextComboID = 'city-' + cell.row.data.ID;
cell.row.data.loadingCity = true;
const cityCombo = this.combos.filter(
(combo) => combo.id === nextComboID
)[0];
this.clearOldData(cell, null, cityCombo);

this.selectedRegion = e.newValue as Region;
this.selectedRegionName = e.newValue;
cell.update(e.newValue ? e.newValue : '');
if (e.newValue) {
document.getElementById(
'city-progress-' + cell.row.data.ID
).style.visibility = 'visible';
this.loadingTime = 2000;
}
setTimeout(() => {
cityCombo.data = getCitiesByCountry([this.selectedCountry?.name]).filter(
(c) => c.region === this.selectedRegion?.name
cityCombo.data = getCitiesByCountry([this.selectedCountryName]).filter(
(c) => c.region === this.selectedRegionName
);
document.getElementById(
'city-progress-' + cell.row.data.ID
).style.visibility = 'hidden';
cell.row.data.loadingCity = false;
}, this.loadingTime);
this.selectedCity = null;
this.selectedCityId = null;
this.loadingTime = 0;
}
public cityChanging(e: ISimpleComboSelectionChangingEventArgs, cell) {
cell.update(e.newValue);
this.selectedCityId = e.newValue;
}

private clearOldData(cell, RegionCombo, CityCombo) {
const nextCellIndex = cell.column.visibleIndex + 1;
cell.row.cells[nextCellIndex].update('');

if (CityCombo !== null) CityCombo.data = [];
if (CityCombo !== null) {
CityCombo.data = [];
}
if (RegionCombo !== null) {
RegionCombo.data = [];
cell.row.cells[nextCellIndex + 1].update('');
Expand Down
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