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-rw-r--r--packages/instant/src/components/scaling_input.tsx100
1 files changed, 47 insertions, 53 deletions
diff --git a/packages/instant/src/components/scaling_input.tsx b/packages/instant/src/components/scaling_input.tsx
index e1599a316..c31de1fb5 100644
--- a/packages/instant/src/components/scaling_input.tsx
+++ b/packages/instant/src/components/scaling_input.tsx
@@ -1,3 +1,4 @@
+import { ObjectMap } from '@0x/types';
import * as _ from 'lodash';
import * as React from 'react';
@@ -13,10 +14,15 @@ export enum ScalingInputPhase {
export interface ScalingSettings {
percentageToReduceFontSizePerCharacter: number;
- constantPxToIncreaseWidthPerCharacter: number;
+ // 1ch = the width of the 0 chararacter.
+ // Allow to customize 'char' length for different characters.
+ characterWidthOverrides: ObjectMap<number>;
+ // How much room to leave to the right of the scaling input.
+ additionalInputSpaceInCh: number;
}
export interface ScalingInputProps {
+ type?: string;
textLengthThreshold: number;
maxFontSizePx: number;
value: string;
@@ -28,10 +34,7 @@ export interface ScalingInputProps {
maxLength?: number;
scalingSettings: ScalingSettings;
isDisabled: boolean;
-}
-
-export interface ScalingInputState {
- inputWidthPxAtPhaseChange?: number;
+ hasAutofocus: boolean;
}
export interface ScalingInputSnapshot {
@@ -40,20 +43,22 @@ export interface ScalingInputSnapshot {
// These are magic numbers that were determined experimentally.
const defaultScalingSettings: ScalingSettings = {
- percentageToReduceFontSizePerCharacter: 0.125,
- constantPxToIncreaseWidthPerCharacter: 4,
+ percentageToReduceFontSizePerCharacter: 0.1,
+ characterWidthOverrides: {
+ '1': 0.7,
+ '.': 0.4,
+ },
+ additionalInputSpaceInCh: 0.4,
};
-export class ScalingInput extends React.Component<ScalingInputProps, ScalingInputState> {
+export class ScalingInput extends React.PureComponent<ScalingInputProps> {
public static defaultProps = {
onChange: util.boundNoop,
onFontSizeChange: util.boundNoop,
- maxLength: 7,
+ maxLength: 9,
scalingSettings: defaultScalingSettings,
isDisabled: false,
- };
- public state: ScalingInputState = {
- inputWidthPxAtPhaseChange: undefined,
+ hasAutofocus: false,
};
private readonly _inputRef = React.createRef<HTMLInputElement>();
public static getPhase(textLengthThreshold: number, value: string): ScalingInputPhase {
@@ -91,30 +96,15 @@ export class ScalingInput extends React.Component<ScalingInputProps, ScalingInpu
scalingSettings.percentageToReduceFontSizePerCharacter,
);
}
- public getSnapshotBeforeUpdate(): ScalingInputSnapshot {
- return {
- inputWidthPx: this._getInputWidthInPx(),
- };
+ public componentDidMount(): void {
+ // Trigger an initial notification of the calculated fontSize.
+ const currentPhase = ScalingInput.getPhaseFromProps(this.props);
+ const currentFontSize = ScalingInput.calculateFontSizeFromProps(this.props, currentPhase);
+ this.props.onFontSizeChange(currentFontSize);
}
- public componentDidUpdate(
- prevProps: ScalingInputProps,
- prevState: ScalingInputState,
- snapshot: ScalingInputSnapshot,
- ): void {
+ public componentDidUpdate(prevProps: ScalingInputProps): void {
const prevPhase = ScalingInput.getPhaseFromProps(prevProps);
const curPhase = ScalingInput.getPhaseFromProps(this.props);
- // if we went from fixed to scaling, save the width from the transition
- if (prevPhase !== ScalingInputPhase.ScalingFontSize && curPhase === ScalingInputPhase.ScalingFontSize) {
- this.setState({
- inputWidthPxAtPhaseChange: snapshot.inputWidthPx,
- });
- }
- // if we went from scaling to fixed, revert back to scaling using `ch`
- if (prevPhase === ScalingInputPhase.ScalingFontSize && curPhase !== ScalingInputPhase.ScalingFontSize) {
- this.setState({
- inputWidthPxAtPhaseChange: undefined,
- });
- }
const prevFontSize = ScalingInput.calculateFontSizeFromProps(prevProps, prevPhase);
const curFontSize = ScalingInput.calculateFontSizeFromProps(this.props, curPhase);
// If font size has changed, notify.
@@ -123,49 +113,53 @@ export class ScalingInput extends React.Component<ScalingInputProps, ScalingInpu
}
}
public render(): React.ReactNode {
- const { isDisabled, fontColor, onChange, placeholder, value, maxLength } = this.props;
+ const { type, hasAutofocus, isDisabled, fontColor, placeholder, value, maxLength } = this.props;
const phase = ScalingInput.getPhaseFromProps(this.props);
return (
<Input
+ type={type}
ref={this._inputRef as any}
fontColor={fontColor}
- onChange={onChange}
+ onChange={this._handleChange}
value={value}
placeholder={placeholder}
fontSize={`${this._calculateFontSize(phase)}px`}
width={this._calculateWidth(phase)}
maxLength={maxLength}
disabled={isDisabled}
+ autoFocus={hasAutofocus}
/>
);
}
private readonly _calculateWidth = (phase: ScalingInputPhase): string => {
- const { value, textLengthThreshold, scalingSettings } = this.props;
+ const { value, scalingSettings } = this.props;
if (_.isEmpty(value)) {
return `${this.props.emptyInputWidthCh}ch`;
}
- switch (phase) {
- case ScalingInputPhase.FixedFontSize:
- return `${value.length}ch`;
- case ScalingInputPhase.ScalingFontSize:
- const { inputWidthPxAtPhaseChange } = this.state;
- if (!_.isUndefined(inputWidthPxAtPhaseChange)) {
- const charactersOverMax = value.length - textLengthThreshold;
- const scalingAmount = scalingSettings.constantPxToIncreaseWidthPerCharacter * charactersOverMax;
- const width = inputWidthPxAtPhaseChange + scalingAmount;
- return `${width}px`;
+ const lengthInCh = _.reduce(
+ value.split(''),
+ (sum, char) => {
+ const widthOverride = scalingSettings.characterWidthOverrides[char];
+ if (!_.isUndefined(widthOverride)) {
+ // tslint is confused
+ // tslint:disable-next-line:restrict-plus-operands
+ return sum + widthOverride;
}
- return `${textLengthThreshold}ch`;
- }
+ return sum + 1;
+ },
+ scalingSettings.additionalInputSpaceInCh,
+ );
+ return `${lengthInCh}ch`;
};
private readonly _calculateFontSize = (phase: ScalingInputPhase): number => {
return ScalingInput.calculateFontSizeFromProps(this.props, phase);
};
- private readonly _getInputWidthInPx = (): number => {
- const ref = this._inputRef.current;
- if (!ref) {
- return 0;
+ private readonly _handleChange = (event: React.ChangeEvent<HTMLInputElement>): void => {
+ const value = event.target.value;
+ const { maxLength } = this.props;
+ if (!_.isUndefined(value) && !_.isUndefined(maxLength) && value.length > maxLength) {
+ return;
}
- return ref.getBoundingClientRect().width;
+ this.props.onChange(event);
};
}