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13 changes: 12 additions & 1 deletion projects/components/src/multi-select/multi-select.component.ts
Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,9 @@ export class MultiSelectComponent<V> implements ControlValueAccessor, AfterConte
@Input()
public placeholder?: string;

@Input()
public prefix?: string;

@Input()
public disabled: boolean = false;

Expand Down Expand Up @@ -275,13 +278,21 @@ export class MultiSelectComponent<V> implements ControlValueAccessor, AfterConte
const selectedItems: SelectOptionComponent<V>[] = options.filter(item => this.isSelectedItem(item));

return {
label: selectedItems.length === 0 ? this.placeholder : selectedItems[0]?.label,
label: this.getLabel(selectedItems),
selectedItemsCount: selectedItems.length
};
})
);
}

private getLabel(selectedItems: SelectOptionComponent<V>[]): string {
if (selectedItems.length === 0) {
return this.placeholder === undefined ? '' : this.placeholder;
}

return this.prefix === undefined ? selectedItems[0]?.label : `${this.prefix}${selectedItems[0]?.label}`.trim();
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@anandtiwary anandtiwary Dec 1, 2021

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oooh.. don't you think this is confusing? Currently, we show a placeholder, something like "Select labels" and once we select a few labels, we would show "label 1 + 2" others. Now we are showing that upfront. IMO, we lose the distinction and it will be hard to distinguish between your new placeholder and the existing selection option trigger

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Hmm. Fair point. There are probably a few uses that we don't want to follow this pattern. Let me make it configurable.

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Ah, so I just looked back at the code and I had the foresight to already make this configurable. If the user doesn't see the prefix input, the behavior should be the same as before this PR.

}

private propagateValueChangeToFormControl(value: V[] | undefined): void {
this.propagateControlValueChange?.(value);
this.propagateControlValueChangeOnTouch?.(value);
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@ export interface TablePropertyControlOption {

export interface TableSelectControl {
placeholder: string;
prefix?: string;
isMultiSelect: boolean;
options: TableSelectControlOption[];
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ import {
*ngIf="selectControl.isMultiSelect"
[selected]="this.appliedFilters(selectControl)"
[placeholder]="selectControl.placeholder"
[prefix]="selectControl.prefix"
class="control select"
[ngClass]="{ applied: this.appliedFilters(selectControl).length > 0 }"
showBorder="true"
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@ import { InteractionHandler } from '../../interaction/interaction-handler';
import { TableWidgetRowInteractionModel } from './selections/table-widget-row-interaction.model';
import { TableWidgetBaseModel } from './table-widget-base.model';
import { SpecificationBackedTableColumnDef } from './table-widget-column.model';
import { TableWidgetControlSelectOptionModel } from './table-widget-control-select-option.model';
import { TableWidgetViewToggleModel } from './table-widget-view-toggle.model';
import { TableWidgetModel } from './table-widget.model';

Expand Down Expand Up @@ -232,39 +233,51 @@ export class TableWidgetRendererComponent
.filter(selectControlModel => selectControlModel.visible)
.map(selectControlModel => {
if (selectControlModel.placeholder === changed?.placeholder) {
return of(changed);
return this.buildTableSelectControl(selectControlModel, changed);
}

// Fetch the values for the selectFilter dropdown
return selectControlModel.getOptions().pipe(
take(1),
withLatestFrom(this.selectFilterSubject),
map(([options, filters]) => {
const foundPreferences = preferences.selections
? preferences.selections.find(
preferencesSelectionControl =>
selectControlModel.placeholder === preferencesSelectionControl.placeholder
)
: undefined;
const foundPreferences = preferences.selections
? preferences.selections.find(
preferencesSelectionControl =>
selectControlModel.placeholder === preferencesSelectionControl.placeholder
)
: undefined;

return (
foundPreferences ?? {
placeholder: selectControlModel.placeholder,
isMultiSelect: selectControlModel.isMultiselect,
options: options.map(option => ({
...option,
applied: this.isFilterApplied(option.metaValue, filters)
}))
}
);
})
);
// Fetch the values for the selectFilter dropdown
return this.buildTableSelectControl(selectControlModel, foundPreferences);
})
)
)
);
}

private buildTableSelectControl(
model: TableWidgetControlSelectOptionModel,
override?: TableSelectControl
): Observable<TableSelectControl> {
return model.getOptions().pipe(
take(1),
withLatestFrom(this.selectFilterSubject),
map(([options, filters]) => {
const mergedOptions = options.map(option => {
const found = override?.options.find(o => o.label === option.label);

return {
...option,
applied: found?.applied || this.isFilterApplied(option.metaValue, filters)
};
});

return {
placeholder: model.placeholder,
prefix: `${model.placeholder}: `,
isMultiSelect: model.isMultiselect,
options: mergedOptions
};
})
);
}

private isFilterApplied(filterOption: TableFilter, appliedFilters: TableFilter[]): boolean {
// This gets just a little tricky because multiple options for a single select could be IN filtered together
return (
Expand Down