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Added repeat functionnality when holding the action button #22

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Added repeat functionnality when holding the action button #22

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3 changes: 2 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -70,7 +70,8 @@ You can now use custom images, from your local file system or from the Internet.
| `onMinimumReached` | Function | Executed when the `minimumValue` is reached. The value is passed as a parameter | null |
| `onMaximumReached` | Function | Executed when the `maximumValue` is reached. The value is passed as a parameter | null |
| `innerRef` | Function | A reference to the rendered UIStepper. You can use this to gain access to class-based methods. `increment()`, `decrement()`, `resetValue()` and `setValue()` are most commonly used | null |

| `repeatActionWhenHolding` | Boolean | Continue to increment/decrement when holding | false
| `repeatInterval` | Number | Number of milliseconds between action repetitions when holding. Only works if `repeatActionWhenHolding` is set to `true` | 100
## Contributing

There are no requirements for contributing to the react-native-ui-stepper package. You can [browse](https://github.com/hannigand/react-native-ui-stepper/issues/) or raise issues that you are would like to contribute to.
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30 changes: 25 additions & 5 deletions UIStepper.js
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,9 @@ const styles = StyleSheet.create({
},
});

const ACTION_INCREMENT = 'INCREMENT';
const ACTION_DECREMENT = 'DECREMENT';

class UIStepper extends Component {
static propTypes = {
initialValue: PropTypes.number,
Expand Down Expand Up @@ -50,6 +53,8 @@ class UIStepper extends Component {
displayDecrementFirst: PropTypes.bool,
fontFamily: PropTypes.string,
innerRef: PropTypes.func,
repeatActionWhenHolding: PropTypes.bool,
repeatInterval: PropTypes.number,
};
static defaultProps = {
initialValue: 0,
Expand Down Expand Up @@ -82,12 +87,15 @@ class UIStepper extends Component {
displayDecrementFirst: false,
fontFamily: 'System',
innerRef: null,
repeatActionWhenHolding: false,
repeatInterval: 100,
};
constructor(props) {
super(props);
this.state = {
value: props.initialValue,
};
this.timer = null;
}
componentDidMount() {
const { innerRef } = this.props;
Expand All @@ -114,13 +122,13 @@ class UIStepper extends Component {
const { steps, onDecrement } = this.props;
let value = this.state.value;
value -= steps;
this.validate(value, onDecrement);
this.validate(value, onDecrement, ACTION_DECREMENT);
};
increment = () => {
const { steps, onIncrement } = this.props;
let value = this.state.value;
value += steps;
this.validate(value, onIncrement);
this.validate(value, onIncrement, ACTION_INCREMENT);
};
isExternalImage = image => typeof image === 'string';
resolveImage = image => {
Expand Down Expand Up @@ -179,14 +187,16 @@ class UIStepper extends Component {
}
return imageWidth;
};
validate = (value, callback) => {
validate = (value, callback, actionType) => {
const {
minimumValue: min,
maximumValue: max,
onValueChange,
onMinimumReached,
onMaximumReached,
wraps,
repeatActionWhenHolding,
repeatInterval
} = this.props;
if (min <= value && max >= value) {
this.setState({
Expand All @@ -198,6 +208,12 @@ class UIStepper extends Component {
if (callback) {
callback(value);
}
if (repeatActionWhenHolding && actionType === ACTION_INCREMENT) {
this.timer = setTimeout(this.increment, repeatInterval);
}
if (repeatActionWhenHolding && actionType === ACTION_DECREMENT) {
this.timer = setTimeout(this.decrement, repeatInterval);
}
return;
}
if (value < min) {
Expand All @@ -213,6 +229,7 @@ class UIStepper extends Component {
}
return;
}
clearTimeout(this.timer)
onMinimumReached && onMinimumReached(value);
}
if (value > max) {
Expand All @@ -228,6 +245,7 @@ class UIStepper extends Component {
}
return;
}
clearTimeout(this.timer)
onMaximumReached && onMaximumReached(value);
}
};
Expand Down Expand Up @@ -288,7 +306,8 @@ class UIStepper extends Component {
]}
>
<TouchableOpacity
onPress={this.decrement}
onPressIn={this.decrement}
onPressOut={() => clearTimeout(this.timer)}
style={[
styles.button,
{
Expand All @@ -312,7 +331,8 @@ class UIStepper extends Component {
</View>
)}
<TouchableOpacity
onPress={this.increment}
onPressIn={this.increment}
onPressOut={() => clearTimeout(this.timer)}
style={[
styles.button,
{
Expand Down