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android - prevent selecting zero width space character #89

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Merged
exploIF merged 3 commits into from
Jun 16, 2025
Merged

android - prevent selecting zero width space character #89

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0e45fb3
fix: conflicting styles logic
exploIF Jun 16, 2025
9430090
feat: prevent selecting zero width space
exploIF Jun 16, 2025
4de4ac4
Merge remote-tracking branch 'origin/main' into android-prevent-selec…
exploIF Jun 16, 2025
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20 changes: 20 additions & 0 deletions android/src/main/java/com/swmansion/reactnativerichtexteditor/utils/EditorSelection.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -33,12 +33,32 @@ class EditorSelection(private val editorView: ReactNativeRichTextEditorView) {
shouldValidateStyles = true
}

if (isZeroWidthSelection()) {
editorView.setSelection(start + 1)
return
}

if (!shouldValidateStyles) return

validateStyles()
emitSelectionChangeEvent(editorView.text, start, end)
}

private fun isZeroWidthSelection(): Boolean {
if (start != end) {
return editorView.text?.substring(start, end) == "\u200B"
}

val isNewLine = if (start > 0 ) editorView.text?.substring(start - 1, start) == "\n" else true
val isNextCharacterZeroWidth = if (start < (editorView.text?.length ?: 0)) {
editorView.text?.substring(start, start + 1) == "\u200B"
} else {
false
}

return isNewLine && isNextCharacterZeroWidth
}

fun validateStyles() {
val state = editorView.spanState ?: return

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