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Fix: Prevent panic caused by #8083 #8271

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Fix: Prevent panic caused by #8083 #8271

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21 changes: 14 additions & 7 deletions crates/eframe/src/web/text_agent.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -92,13 +92,20 @@ impl TextAgent {
&& let Some(selection_end) = selection_end
{
let text_utf16 = text.encode_utf16().collect::<Vec<u16>>();
let text_before_selection =
String::from_utf16_lossy(&text_utf16[..selection_start]);
let text_in_selection =
String::from_utf16_lossy(&text_utf16[selection_start..selection_end]);
let count_before_selection = text_before_selection.chars().count();
let count_in_selection = text_in_selection.chars().count();
Some(count_before_selection..count_before_selection + count_in_selection)
if selection_start > text_utf16.len() || selection_end > text_utf16.len() {
None
} else {
let text_before_selection =
String::from_utf16_lossy(&text_utf16[..selection_start]);
let text_in_selection = String::from_utf16_lossy(
&text_utf16[selection_start..selection_end],
);
let count_before_selection = text_before_selection.chars().count();
let count_in_selection = text_in_selection.chars().count();
Some(
count_before_selection..count_before_selection + count_in_selection,
)
}
} else {
None
};
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