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Merge pull request #9 from Astrocoders/patched-highlights
feature/highlights
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,25 +1,129 @@ | ||
| import React from "react"; | ||
| import { Text, requireNativeComponent, Platform } from "react-native"; | ||
| import React from 'react' | ||
| import { Text, requireNativeComponent, Platform } from 'react-native' | ||
| import { v4 } from 'uuid' | ||
| import memoize from 'fast-memoize' | ||
|
|
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| const RNSelectableText = requireNativeComponent("RNSelectableText"); | ||
| const RNSelectableText = requireNativeComponent('RNSelectableText') | ||
|
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| export const SelectableText = ({ onSelection, value, children, ...props }) => { | ||
| /** | ||
| * numbers: array({start: int, end: int, id: string}) | ||
| */ | ||
| const combineHighlights = memoize(numbers => { | ||
| return numbers | ||
| .sort((a, b) => a.start - b.start || a.end - b.end) | ||
| .reduce(function(combined, next) { | ||
| if (!combined.length || combined[combined.length - 1].end < next.start) combined.push(next) | ||
| else { | ||
| var prev = combined.pop() | ||
| combined.push({ | ||
| start: prev.start, | ||
| end: Math.max(prev.end, next.end), | ||
| id: next.id, | ||
| }) | ||
| } | ||
| return combined | ||
| }, []) | ||
| }) | ||
|
|
||
| /** | ||
| * value: string | ||
| * highlights: array({start: int, end: int, id: any}) | ||
| */ | ||
| const mapHighlightsRanges = (value, highlights) => { | ||
| const combinedHighlights = combineHighlights(highlights) | ||
|
|
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| if (combinedHighlights.length === 0) return [{ isHighlight: false, text: value }] | ||
|
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| const data = [{ isHighlight: false, text: value.slice(0, combinedHighlights[0].start) }] | ||
|
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| combinedHighlights.forEach(({ start, end }, idx) => { | ||
| data.push({ | ||
| isHighlight: true, | ||
| text: value.slice(start, end), | ||
| }) | ||
|
|
||
| if (combinedHighlights[idx + 1]) { | ||
| data.push({ | ||
| isHighlight: false, | ||
| text: value.slice(end, combinedHighlights[idx + 1].start), | ||
| }) | ||
| } | ||
| }) | ||
|
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| data.push({ | ||
| isHighlight: false, | ||
| text: value.slice(combinedHighlights[combinedHighlights.length - 1].end, value.length), | ||
| }) | ||
|
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| return data.filter(x => x.text) | ||
| } | ||
|
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| /** | ||
| * Props | ||
| * ...TextProps | ||
| * onSelection: ({ content: string, eventType: string, selectionStart: int, selectionEnd: int }) => void | ||
| * children: ReactNode | ||
| * highlights: array({ id, start, end }) | ||
| * highlightColor: string | ||
| * onHighlightPress: string => void | ||
| */ | ||
| export const SelectableText = ({ onSelection, onHighlightPress, value, children, ...props }) => { | ||
| const onSelectionNative = ({ | ||
| nativeEvent: { content, eventType, selectionStart, selectionEnd } | ||
| nativeEvent: { content, eventType, selectionStart, selectionEnd }, | ||
| }) => { | ||
| onSelection && | ||
| onSelection({ content, eventType, selectionStart, selectionEnd }); | ||
| }; | ||
| onSelection && onSelection({ content, eventType, selectionStart, selectionEnd }) | ||
| } | ||
|
|
||
| const onHighlightPressNative = onHighlightPress | ||
| ? Platform.OS === 'ios' | ||
| ? ({ nativeEvent: { clickedRangeStart, clickedRangeEnd } }) => { | ||
| if (!props.highlights || props.highlights.length === 0) return | ||
|
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| const mergedHighlights = combineHighlights(props.highlights) | ||
|
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| const hightlightInRange = mergedHighlights.find( | ||
| ({ start, end }) => clickedRangeStart >= start - 1 && clickedRangeEnd <= end + 1, | ||
| ) | ||
|
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| if (hightlightInRange) { | ||
| onHighlightPress(hightlightInRange.id) | ||
| } | ||
| } | ||
| : onHighlightPress | ||
| : () => {} | ||
|
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||
| return Platform.OS === "ios" ? ( | ||
| return ( | ||
| <RNSelectableText | ||
| {...props} | ||
| value={children ? children : value} | ||
| onHighlightPress={onHighlightPressNative} | ||
| selectable | ||
| onSelection={onSelectionNative} | ||
| /> | ||
| ) : ( | ||
| <RNSelectableText {...props} selectable onSelection={onSelectionNative}> | ||
| {children ? children : <Text selectable>{value}</Text>} | ||
| > | ||
| <Text selectable key={v4()}> | ||
| {props.highlights && props.highlights.length > 0 | ||
| ? mapHighlightsRanges(value, props.highlights).map(({ id, isHighlight, text }) => ( | ||
| <Text | ||
| key={v4()} | ||
| selectable | ||
| style={ | ||
| isHighlight | ||
| ? { | ||
| backgroundColor: props.highlightColor, | ||
| } | ||
| : {} | ||
| } | ||
| onPress={() => { | ||
| if (isHighlight) { | ||
| onHighlightPress && onHighlightPress(id) | ||
| } | ||
| }} | ||
| > | ||
| {text} | ||
| </Text> | ||
| )) | ||
| : value} | ||
| {props.appendToChildren ? props.appendToChildren : null} | ||
| </Text> | ||
| </RNSelectableText> | ||
| ); | ||
| }; | ||
| ) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY. | ||
| # yarn lockfile v1 | ||
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| fast-memoize@^2.5.1: | ||
| version "2.5.1" | ||
| resolved "https://registry.yarnpkg.com/fast-memoize/-/fast-memoize-2.5.1.tgz#c3519241e80552ce395e1a32dcdde8d1fd680f5d" | ||
| integrity sha512-xdmw296PCL01tMOXx9mdJSmWY29jQgxyuZdq0rEHMu+Tpe1eOEtCycoG6chzlcrWsNgpZP7oL8RiQr7+G6Bl6g== | ||
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| uuid@^3.3.2: | ||
| version "3.3.2" | ||
| resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131" | ||
| integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA== |