gristlabs_grist-core/app/client/ui2018/checkbox.ts

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/**
* UI 2018 Checkboxes
*
* Includes:
* - squareCheckbox
* - circleCheckbox
* - labeledSquareCheckbox
* - labeledCircleCheckbox
*
* Checkboxes support passing in DomElementArgs, which can be used to register click handlers, set
* the disabled property, and other HTML <input> element behaviors.
*
* Examples:
* squareCheckbox(observable(true)),
* labeledSquareCheckbox(observable(false), 'Include other values', dom.prop('disabled', true)),
*/
import { colors } from 'app/client/ui2018/cssVars';
import { Computed, dom, DomArg, styled } from 'grainjs';
import { Observable } from 'grainjs';
export const cssLabel = styled('label', `
position: relative;
display: inline-flex;
min-width: 0px;
margin-bottom: 0px;
outline: none;
user-select: none;
--color: ${colors.darkGrey};
&:hover {
--color: ${colors.hover};
}
`);
// TODO: the !important markings are to trump bootstrap, and should be removed when it's gone.
export const cssCheckboxSquare = styled('input', `
-webkit-appearance: none;
-moz-appearance: none;
margin: 0 !important;
padding: 0;
flex-shrink: 0;
display: inline-block;
width: 16px;
height: 16px;
outline: none !important;
--radius: 3px;
&:checked:enabled, &:indeterminate:enabled {
--color: ${colors.lightGreen};
}
&:disabled {
--color: ${colors.darkGrey};
cursor: not-allowed;
}
.${cssLabel.className}:hover > &:checked:enabled,
.${cssLabel.className}:hover > &:indeterminate:enabled, {
--color: ${colors.darkGreen};
}
&::before, &::after {
content: '';
position: absolute;
top: 0;
left: 0;
height: 16px;
width: 16px;
box-sizing: border-box;
border: 1px solid var(--color);
border-radius: var(--radius);
}
&:checked::before, &:disabled::before, &:indeterminate::before {
background-color: var(--color);
}
&:checked::after, &:indeterminate::after {
content: '';
position: absolute;
height: 16px;
width: 16px;
-webkit-mask-image: var(--icon-Tick);
-webkit-mask-size: contain;
-webkit-mask-position: center;
-webkit-mask-repeat: no-repeat;
background-color: ${colors.light};
}
&:not(:checked):indeterminate::after {
-webkit-mask-image: var(--icon-Minus);
}
&:not(:disabled)::after {
background-color: ${colors.light};
}
`);
export const cssCheckboxCircle = styled(cssCheckboxSquare, `
--radius: 100%;
`);
export const cssLabelText = styled('span', `
margin-left: 8px;
color: ${colors.dark};
font-weight: initial; /* negate bootstrap */
overflow: hidden;
text-overflow: ellipsis;
`);
type CheckboxArg = DomArg<HTMLInputElement>;
function checkbox(
obs: Observable<boolean>, cssCheckbox: typeof cssCheckboxSquare, label: string = '', ...domArgs: CheckboxArg[]
) {
return cssLabel(
cssCheckbox(
{ type: 'checkbox' },
dom.prop('checked', obs),
dom.on('change', (ev, el) => obs.set(el.checked)),
...domArgs
),
label ? cssLabelText(label) : null
);
}
export function squareCheckbox(obs: Observable<boolean>, ...domArgs: CheckboxArg[]) {
return checkbox(obs, cssCheckboxSquare, '', ...domArgs);
}
export function circleCheckbox(obs: Observable<boolean>, ...domArgs: CheckboxArg[]) {
return checkbox(obs, cssCheckboxCircle, '', ...domArgs);
}
export function labeledSquareCheckbox(obs: Observable<boolean>, label: string, ...domArgs: CheckboxArg[]) {
return checkbox(obs, cssCheckboxSquare, label, ...domArgs);
}
export function labeledCircleCheckbox(obs: Observable<boolean>, label: string, ...domArgs: CheckboxArg[]) {
return checkbox(obs, cssCheckboxCircle, label, ...domArgs);
}
export const Indeterminate = 'indeterminate';
export type TriState = boolean|'indeterminate';
function triStateCheckbox(
obs: Observable<TriState>, cssCheckbox: typeof cssCheckboxSquare, label: string = '', ...domArgs: CheckboxArg[]
) {
const checkboxObs = Computed.create(null, obs, (_use, state) => state === true)
.onWrite((checked) => obs.set(checked));
return checkbox(
checkboxObs, cssCheckbox, label,
dom.prop('indeterminate', (use) => use(obs) === 'indeterminate'),
dom.autoDispose(checkboxObs),
...domArgs
);
}
export function triStateSquareCheckbox(obs: Observable<TriState>, ...domArgs: CheckboxArg[]) {
return triStateCheckbox(obs, cssCheckboxSquare, '', ...domArgs);
}
export function labeledTriStateSquareCheckbox(obs: Observable<TriState>, label: string, ...domArgs: CheckboxArg[]) {
return triStateCheckbox(obs, cssCheckboxSquare, label, ...domArgs);
}