gristlabs_grist-core/app/client/widgets/NumericTextBox.ts

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/**
* See app/common/NumberFormat for description of options we support.
*/
import {ViewFieldRec} from 'app/client/models/entities/ViewFieldRec';
import {reportError} from 'app/client/models/errors';
import {cssLabel, cssRow} from 'app/client/ui/RightPanel';
import {ISelectorOption, makeButtonSelect} from 'app/client/ui2018/buttonSelect';
import {colors, testId} from 'app/client/ui2018/cssVars';
import {icon} from 'app/client/ui2018/icons';
import {NTextBox} from 'app/client/widgets/NTextBox';
import {clamp} from 'app/common/gutil';
import {buildNumberFormat, NumberFormatOptions, NumMode, NumSign} from 'app/common/NumberFormat';
import {Computed, dom, DomContents, DomElementArg, fromKo, MultiHolder, Observable, styled} from 'grainjs';
const modeOptions: Array<ISelectorOption<NumMode>> = [
{value: 'currency', label: '$'},
{value: 'decimal', label: ','},
{value: 'percent', label: '%'},
{value: 'scientific', label: 'Exp'}
];
const signOptions: Array<ISelectorOption<NumSign>> = [
{value: 'parens', label: '(-)'},
];
/**
* NumericTextBox - The most basic widget for displaying numeric information.
*/
export class NumericTextBox extends NTextBox {
constructor(field: ViewFieldRec) {
super(field);
}
public buildConfigDom(): DomContents {
// Holder for all computeds created here. It gets disposed with the returned DOM element.
const holder = new MultiHolder();
// Resolved options, to show default min/max decimals, which change depending on numMode.
const resolved = Computed.create<Intl.ResolvedNumberFormatOptions>(holder, (use) =>
buildNumberFormat({numMode: use(this.options).numMode}).resolvedOptions());
// Prepare various observables that reflect the options in the UI.
const options = fromKo(this.options);
const numMode = Computed.create(holder, options, (use, opts) => opts.numMode || null);
const numSign = Computed.create(holder, options, (use, opts) => opts.numSign || null);
const minDecimals = Computed.create(holder, options, (use, opts) => numberOrDefault(opts.decimals, ''));
const maxDecimals = Computed.create(holder, options, (use, opts) => numberOrDefault(opts.maxDecimals, ''));
const defaultMin = Computed.create(holder, resolved, (use, res) => res.minimumFractionDigits);
const defaultMax = Computed.create(holder, resolved, (use, res) => res.maximumFractionDigits);
// Save a value as the given property in this.options() observable. Set it, save, and revert
// on save error. This is similar to what modelUtil.setSaveValue() does.
const setSave = (prop: keyof NumberFormatOptions, value: unknown) => {
const orig = {...this.options.peek()};
if (value !== orig[prop]) {
this.options({...orig, [prop]: value, ...updateOptions(prop, value)});
this.options.save().catch((err) => { reportError(err); this.options(orig); });
}
};
// Prepare setters for the UI elements.
// Min/max fraction digits may range from 0 to 20; other values are invalid.
const setMinDecimals = (val?: number) => setSave('decimals', val && clamp(val, 0, 20));
const setMaxDecimals = (val?: number) => setSave('maxDecimals', val && clamp(val, 0, 20));
// Mode and Sign behave as toggles: clicking a selected on deselects it.
const setMode = (val: NumMode) => setSave('numMode', val !== numMode.get() ? val : undefined);
const setSign = (val: NumSign) => setSave('numSign', val !== numSign.get() ? val : undefined);
return [
super.buildConfigDom(),
cssLabel('Number Format'),
cssRow(
dom.autoDispose(holder),
makeButtonSelect(numMode, modeOptions, setMode, {}, cssModeSelect.cls(''), testId('numeric-mode')),
makeButtonSelect(numSign, signOptions, setSign, {}, cssSignSelect.cls(''), testId('numeric-sign')),
),
cssLabel('Decimals'),
cssRow(
decimals('min', minDecimals, defaultMin, setMinDecimals, testId('numeric-min-decimals')),
decimals('max', maxDecimals, defaultMax, setMaxDecimals, testId('numeric-max-decimals')),
),
];
}
}
function numberOrDefault<T>(value: unknown, def: T): number|T {
return typeof value !== 'undefined' ? Number(value) : def;
}
// Helper used by setSave() above to reset some properties when switching modes.
function updateOptions(prop: keyof NumberFormatOptions, value: unknown): NumberFormatOptions {
// Reset the numSign to default when toggling mode to percent or scientific.
if (prop === 'numMode' && (!value || value === 'scientific' || value === 'percent')) {
return {numSign: undefined};
}
return {};
}
function decimals(
label: string,
value: Observable<number|''>,
defaultValue: Observable<number>,
setFunc: (val?: number) => void, ...args: DomElementArg[]
) {
return cssDecimalsBox(
cssNumLabel(label),
cssNumInput({type: 'text', size: '2', min: '0'},
dom.prop('value', value),
dom.prop('placeholder', defaultValue),
dom.on('change', (ev, elem) => {
const newVal = parseInt(elem.value, 10);
// Set value explicitly before its updated via setFunc; this way the value reflects the
// observable in the case the observable is left unchanged (e.g. because of clamping).
elem.value = String(value.get());
setFunc(Number.isNaN(newVal) ? undefined : newVal);
elem.blur();
}),
dom.on('focus', (ev, elem) => elem.select()),
),
cssSpinner(
cssSpinnerBtn(cssSpinnerTop('DropdownUp'),
dom.on('click', () => setFunc(numberOrDefault(value.get(), defaultValue.get()) + 1))),
cssSpinnerBtn(cssSpinnerBottom('Dropdown'),
dom.on('click', () => setFunc(numberOrDefault(value.get(), defaultValue.get()) - 1))),
),
...args
);
}
const cssDecimalsBox = styled('div', `
position: relative;
flex: auto;
--icon-color: ${colors.slate};
color: ${colors.slate};
font-weight: normal;
display: flex;
align-items: center;
&:first-child {
margin-right: 16px;
}
`);
const cssNumLabel = styled('div', `
position: absolute;
padding-left: 8px;
pointer-events: none;
`);
const cssNumInput = styled('input', `
padding: 4px 32px 4px 40px;
border: 1px solid ${colors.darkGrey};
border-radius: 3px;
color: ${colors.dark};
width: 100%;
text-align: right;
appearance: none;
-moz-appearance: none;
-webkit-appearance: none;
`);
const cssSpinner = styled('div', `
position: absolute;
right: 8px;
width: 16px;
height: 100%;
display: flex;
flex-direction: column;
`);
const cssSpinnerBtn = styled('div', `
flex: 1 1 0px;
min-height: 0px;
position: relative;
cursor: pointer;
overflow: hidden;
&:hover {
--icon-color: ${colors.dark};
}
`);
const cssSpinnerTop = styled(icon, `
position: absolute;
top: 0px;
`);
const cssSpinnerBottom = styled(icon, `
position: absolute;
bottom: 0px;
`);
const cssModeSelect = styled(makeButtonSelect, `
flex: 4 4 0px;
background-color: white;
`);
const cssSignSelect = styled(makeButtonSelect, `
flex: 1 1 0px;
background-color: white;
margin-left: 16px;
`);