mirror of
https://github.com/gristlabs/grist-core.git
synced 2024-10-20 01:02:22 +00:00
50 lines
1.9 KiB
TypeScript
50 lines
1.9 KiB
TypeScript
|
import { Computed, Disposable, Observable } from "grainjs";
|
||
|
import escapeRegExp = require("lodash/escapeRegExp");
|
||
|
import { CellValue } from "app/plugin/GristData";
|
||
|
import { localeCompare } from "app/common/gutil";
|
||
|
import { ColumnFilter } from "./ColumnFilter";
|
||
|
|
||
|
const MAXIMUM_SHOWN_FILTER_ITEMS = 500;
|
||
|
|
||
|
export interface IFilterCount {
|
||
|
label: string;
|
||
|
count: number;
|
||
|
}
|
||
|
|
||
|
|
||
|
export class ColumnFilterMenuModel extends Disposable {
|
||
|
|
||
|
public readonly searchValue = Observable.create(this, '');
|
||
|
|
||
|
// computes a set of all keys that matches the search text.
|
||
|
public readonly filterSet = Computed.create(this, this.searchValue, (_use, searchValue) => {
|
||
|
const searchRegex = new RegExp(escapeRegExp(searchValue), 'i');
|
||
|
return new Set(this._valueCount.filter(([_, {label}]) => searchRegex.test(label)).map(([key]) => key));
|
||
|
});
|
||
|
|
||
|
// computes the sorted array of all values (ie: pair of key and IFilterCount) that matches the search text.
|
||
|
public readonly filteredValues = Computed.create(this, this.filterSet, (_use, filter) => {
|
||
|
return this._valueCount.filter(([key]) => filter.has(key))
|
||
|
.sort((a, b) => localeCompare(a[1].label, b[1].label));
|
||
|
});
|
||
|
|
||
|
// computes the array of all values that does NOT matches the search text
|
||
|
public readonly otherValues = Computed.create(this, this.filterSet, (_use, filter) => {
|
||
|
return this._valueCount.filter(([key]) => !filter.has(key));
|
||
|
});
|
||
|
|
||
|
// computes the array of keys that matches the search text
|
||
|
public readonly filteredKeys = Computed.create(this, this.filteredValues, (_use, values) => (
|
||
|
values.map(([key]) => key)
|
||
|
));
|
||
|
|
||
|
public readonly valuesBeyondLimit = Computed.create(this, this.filteredValues, (_use, values) => (
|
||
|
values.slice(this.limitShown)
|
||
|
));
|
||
|
|
||
|
constructor(public columnFilter: ColumnFilter, private _valueCount: Array<[CellValue, IFilterCount]>,
|
||
|
public limitShown: number = MAXIMUM_SHOWN_FILTER_ITEMS) {
|
||
|
super();
|
||
|
}
|
||
|
}
|