Source code
Revision control
Copy as Markdown
Other Tools
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
const {
createFactory,
PureComponent,
const FontPropertyValue = createFactory(
);
const {
getStr,
const {
getUnitFromValue,
getStepForUnit,
class FontSize extends PureComponent {
static get propTypes() {
return {
disabled: PropTypes.bool.isRequired,
onChange: PropTypes.func.isRequired,
value: PropTypes.string.isRequired,
};
}
constructor(props) {
super(props);
this.historicMax = {};
}
render() {
const value = parseFloat(this.props.value);
const unit = getUnitFromValue(this.props.value);
let max;
switch (unit) {
case "em":
case "rem":
max = 4;
break;
case "vh":
case "vw":
case "vmin":
case "vmax":
max = 10;
break;
case "%":
max = 200;
break;
default:
max = 72;
break;
}
// Allow the upper bound to increase so it accomodates the out-of-bounds value.
max = Math.max(max, value);
// Ensure we store the max value ever reached for this unit type. This will be the
// max value of the input and slider. Without this memoization, the value and slider
// thumb get clamped at the upper bound while decrementing an out-of-bounds value.
this.historicMax[unit] = this.historicMax[unit]
? Math.max(this.historicMax[unit], max)
: max;
return FontPropertyValue({
allowOverflow: true,
disabled: this.props.disabled,
label: getStr("fontinspector.fontSizeLabel"),
min: 0,
max: this.historicMax[unit],
name: "font-size",
onChange: this.props.onChange,
step: getStepForUnit(unit),
unit,
unitOptions: ["em", "rem", "%", "px", "vh", "vw"],
value,
});
}
}
module.exports = FontSize;