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Add/correct documentation comments in textinput

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This commit is contained in:
Matt Brubeck 2016-04-01 12:25:21 -07:00
parent d7e6f8b0f1
commit e17ed2e6b0
1 changed files with 9 additions and 2 deletions
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11
components/script/textinput.rs
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@ -165,6 +165,9 @@ impl<T: ClipboardProvider> TextInput<T> {
})
}
/// Return the selection range as UTF-8 byte offsets from the start of the content.
///
/// If there is no selection, returns an empty range at the insertion point.
pub fn get_absolute_selection_range(&self) -> Range<usize> {
match self.get_sorted_selection() {
Some((begin, _end)) =>
@ -302,7 +305,7 @@ impl<T: ClipboardProvider> TextInput<T> {
self.edit_point.index = min(self.current_line_length(), self.edit_point.index);
}
/// Adjust the editing point position by a given number of columns. If the adjustment
/// Adjust the editing point position by a given number of bytes. If the adjustment
/// requested is larger than is available in the current line, the editing point is
/// adjusted vertically and the process repeats with the remaining adjustment requested.
pub fn adjust_horizontal(&mut self, adjust: isize, select: Selection) {
@ -339,7 +342,7 @@ impl<T: ClipboardProvider> TextInput<T> {
self.perform_horizontal_adjustment(adjust, select);
}
// Return whether to cancel the caret move
/// Return whether to cancel the caret move
fn adjust_selection_for_horizontal_change(&mut self, adjust: Direction, select: Selection)
-> bool {
if select == Selection::Selected {
@ -489,6 +492,7 @@ impl<T: ClipboardProvider> TextInput<T> {
}
}
/// The length of the content in bytes.
pub fn len(&self) -> usize {
self.lines.iter().fold(0, |m, l| {
m + l.len() + 1
@ -520,10 +524,12 @@ impl<T: ClipboardProvider> TextInput<T> {
self.selection_begin = None;
}
/// Get the insertion point as a byte offset from the start of the content.
pub fn get_absolute_insertion_point(&self) -> usize {
self.get_absolute_point_for_text_point(&self.edit_point)
}
/// Convert a TextPoint into a byte offset from the start of the content.
pub fn get_absolute_point_for_text_point(&self, text_point: &TextPoint) -> usize {
self.lines.iter().enumerate().fold(0, |acc, (i, val)| {
if i < text_point.line {
@ -534,6 +540,7 @@ impl<T: ClipboardProvider> TextInput<T> {
}) + text_point.index
}
/// Convert a byte offset from the start of the content into a TextPoint.
pub fn get_text_point_for_absolute_point(&self, abs_point: usize) -> TextPoint {
let mut index = abs_point;
let mut line = 0;