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Fix clearing the selection when value is changed

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The implementation of adjust_horizontal_to_limit() is written with UI in
mind. As such, when there's a selection and we "adjust horizontal", the
selection will be cleared and the cursor will and up at the start/end of
the previous selection. This is what happens when you have a selection
and you press an arrow key on your keyboard, but it isn't the behaviour
we want when programmatically changing the value.

Instead, we need to first clear the selection, and then move the cursor
to the end. (We also need to reset the selection direction when clearing
the selection.)
This commit is contained in:
Jon Leighton 2017-12-09 21:55:01 +01:00
parent 02883a6f54
commit 648bfbeb02
4 changed files with 11 additions and 25 deletions
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4
components/script/dom/htmltextareaelement.rs
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@ -35,7 +35,7 @@ use std::default::Default;
use std::ops::Range;
use style::attr::AttrValue;
use style::element_state::ElementState;
use textinput::{Direction, KeyReaction, Lines, Selection, SelectionDirection, TextInput};
use textinput::{KeyReaction, Lines, SelectionDirection, TextInput};
#[dom_struct]
pub struct HTMLTextAreaElement {
@ -257,7 +257,7 @@ impl HTMLTextAreaElementMethods for HTMLTextAreaElement {
if old_value != textinput.get_content() {
// Step 4
textinput.adjust_horizontal_to_limit(Direction::Forward, Selection::NotSelected);
textinput.clear_selection_to_limit();
} else {
textinput.selection_origin = old_selection;
}