Better DurationView

client/components/DurationView.tsx

@@ -6,13 +6,90 @@ import { Duration } from "@common/Duration";
 
 import "@client/styles/DurationView";
 
-export default class DurationView extends React.Component<{
+export interface DurationViewProps {
   label?: string;
   inline?: boolean;
   duration: Duration;
   onDurationChange?: (newDuration: Duration) => void;
   className?: string;
-}> {
+}
+
+function roundOrString(val: number | string): number | string {
+  if (typeof val === "number") {
+    return Math.round(val);
+  } else {
+    return val;
+  }
+}
+
+interface NumberInputProps {
+  className?: string;
+  label?: string;
+  value: number;
+  max?: number;
+  onChange: (value: number) => void;
+}
+
+function NumberInput(props: NumberInputProps): React.ReactElement {
+  const [valueState, setValueState] = React.useState<number | string>(props.value);
+  const [elementId, setElementId] = React.useState(() => `NumberInput-${Math.round(Math.random() * 100000000)}`);
+  const [isWheelChange, setIsWheelChange] = React.useState(false);
+
+  const onChange: InputProps["onChange"] = (_e, data) => {
+    setValueState(data.value);
+    const newValue = parseFloat(data.value);
+    if (!isNaN(newValue) && data.value.length > 0 && isWheelChange) {
+      props.onChange(Math.round(newValue));
+      setIsWheelChange(false);
+    }
+  };
+
+  const onBlur: React.FocusEventHandler = () => {
+    const newValue = (typeof valueState === "number") ? valueState : parseFloat(valueState);
+    if (!props.onChange || isNaN(newValue)) {
+      return;
+    }
+    if (props.value !== newValue) {
+      props.onChange(Math.round(newValue));
+    }
+  };
+
+  const onWheel = (e: Event) => {
+    // do nothing
+    setIsWheelChange(true);
+  };
+
+  React.useEffect(() => {
+    const el = document.getElementById(elementId);
+    if (el) {
+      // Not passive events
+      el.addEventListener("wheel", onWheel);
+    }
+  });
+
+  React.useEffect(() => {
+    if (props.value !== valueState) {
+      setValueState(props.value);
+    }
+  }, [props.value]);
+
+  return <Input
+    id={elementId}
+    type="number"
+    pattern="[0-9\.]*" // for safari
+    inputMode="numeric"
+    value={roundOrString(valueState)}
+    onChange={onChange}
+    // onMouseOut={onBlur}
+    onBlur={onBlur}
+    className={props.className}
+    label={props.label}
+    max={props.max}
+    labelPosition="right"
+  />
+}
+
+export default class DurationView extends React.Component<DurationViewProps> {
   render() {
     const { duration, label, inline, onDurationChange, className } = this.props;
     const inputsClassName = classNames("durationInputs", { inline });
@@ -22,24 +99,18 @@ export default class DurationView extends React.Component<{
           <Form.Field inline={inline} className={className}>
             {label && <label>{label}</label>}
             <div className={inputsClassName}>
-              <Input
-                type="number"
+              <NumberInput
                 className="durationInput minutes"
-                value={duration.minutes}
+                value={this.props.duration.minutes}
                 onChange={this.onMinutesChange}
                 label="M"
-                labelPosition="right"
-                onWheel={this.onWheel}
               />
-              <Input
-                type="number"
+              <NumberInput
                 className="durationInput seconds"
-                value={duration.seconds}
+                value={this.props.duration.seconds}
                 onChange={this.onSecondsChange}
-                max="60"
+                max={60}
                 label="S"
-                labelPosition="right"
-                onWheel={this.onWheel}
               />
             </div>
           </Form.Field>
@@ -55,23 +126,25 @@ export default class DurationView extends React.Component<{
     }
   }
 
-  private onMinutesChange: InputProps["onChange"] = (e, { value }) => {
-    if (!this.props.onDurationChange || isNaN(Number(value))) {
-      return;
+  componentWillReceiveProps(nextProps: Readonly<DurationViewProps>) {
+    if (nextProps.duration.minutes !== this.props.duration.minutes ||
+      nextProps.duration.seconds !== this.props.duration.seconds) {
+      this.setState({
+        minutes: nextProps.duration.minutes,
+        seconds: nextProps.duration.seconds,
+      });
+    }
   }
-    const newMinutes = Number(value);
-    this.props.onDurationChange(this.props.duration.withMinutes(newMinutes));
-  };
 
-  private onSecondsChange: InputProps["onChange"] = (e, { value }) => {
-    if (!this.props.onDurationChange || isNaN(Number(value))) {
-      return;
+  private onMinutesChange = (newMinutes: number) => {
+    if (this.props.onDurationChange) {
+      this.props.onDurationChange(this.props.duration.withMinutes(newMinutes));
     }
-    const newSeconds = Number(value);
-    this.props.onDurationChange(this.props.duration.withSeconds(newSeconds));
   };
 
-  private onWheel = () => {
-    // do nothing
+  private onSecondsChange = (newSeconds: number) => {
+    if (this.props.onDurationChange) {
+      this.props.onDurationChange(this.props.duration.withSeconds(newSeconds));
+    }
   };
 }