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Auto merge of #19358 - jonleighton:issue-19171-3, r=KiChjang

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Move selection to end when textarea value is assigned

Issue #19171

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This commit is contained in:
bors-servo 2017-11-25 16:10:41 -06:00 • committed by GitHub
commit 3f0ccd0fef
8 changed files with 59 additions and 72 deletions
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21
components/script/dom/htmltextareaelement.rs
View file

@ -34,7 +34,7 @@ use std::default::Default;
use std::ops::Range;
use style::attr::AttrValue;
use style::element_state::ElementState;
use textinput::{KeyReaction, Lines, SelectionDirection, TextInput};
use textinput::{Direction, KeyReaction, Lines, Selection, SelectionDirection, TextInput};
#[dom_struct]
pub struct HTMLTextAreaElement {
@ -232,10 +232,25 @@ impl HTMLTextAreaElementMethods for HTMLTextAreaElement {
// https://html.spec.whatwg.org/multipage/#dom-textarea-value
fn SetValue(&self, value: DOMString) {
// TODO move the cursor to the end of the field
self.textinput.borrow_mut().set_content(value);
let mut textinput = self.textinput.borrow_mut();
// Step 1
let old_value = textinput.get_content();
let old_selection = textinput.selection_begin;
// Step 2
textinput.set_content(value);
// Step 3
self.value_changed.set(true);
if old_value != textinput.get_content() {
// Step 4
textinput.adjust_horizontal_to_limit(Direction::Forward, Selection::NotSelected);
} else {
textinput.selection_begin = old_selection;
}
self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
}

11
components/script/dom/textcontrol.rs
View file

@ -21,7 +21,16 @@ pub trait TextControl: DerivedFrom<EventTarget> + DerivedFrom<Node> {
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionstart
fn set_dom_selection_start(&self, start: u32) {
self.set_selection_range(start, self.dom_selection_end(), self.selection_direction());
// Step 2
let mut end = self.dom_selection_end();
// Step 3
if end < start {
end = start;
}
// Step 4
self.set_selection_range(start, end, self.selection_direction());
}
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionend

6
components/script/textinput.rs
View file

@ -770,7 +770,11 @@ impl<T: ClipboardProvider> TextInput<T> {
/// any \n encountered will be stripped and force a new logical line.
pub fn set_content(&mut self, content: DOMString) {
self.lines = if self.multiline {
content.split('\n').map(DOMString::from).collect()
// https://html.spec.whatwg.org/multipage/#textarea-line-break-normalisation-transformation
content.replace("\r\n", "\n")
.split(|c| c == '\n' || c == '\r')
.map(DOMString::from)
.collect()
} else {
vec!(content)
};

2
tests/wpt/metadata/MANIFEST.json
View file

@ -542604,7 +542604,7 @@
"testharness"
],
"html/semantics/forms/textfieldselection/selection-value-interactions.html": [
"c568d7fe10cb4c2071b5d38530ad601988a789ea",
"39fe9646bbc2741e9bd3296d4e01513c99106151",
"testharness"
],
"html/semantics/forms/textfieldselection/selection.html": [

35
tests/wpt/metadata/html/semantics/forms/textfieldselection/selection-start-end.html.ini
View file

@ -1,35 +0,0 @@
[selection-start-end.html]
type: testharness
[Setting selectionStart to a value larger than selectionEnd should increase selectionEnd]
expected: FAIL
[Setting selectionEnd to a value smaller than selectionStart should decrease selectionStart]
expected: FAIL
[selectionStart edge-case values]
expected: FAIL
[Initial .value set on textarea-appended should set selectionStart to end of value]
expected: FAIL
[Initial .value set on textarea-not-appended should set selectionStart to end of value]
expected: FAIL
[Initial .value set on textarea-appended-prefocused should set selectionStart to end of value]
expected: FAIL
[Initial .value set on textarea-not-appended-prefocused should set selectionStart to end of value]
expected: FAIL
[Initial .value set on textarea-appended should set selectionEnd to end of value]
expected: FAIL
[Initial .value set on textarea-not-appended should set selectionEnd to end of value]
expected: FAIL
[Initial .value set on textarea-appended-prefocused should set selectionEnd to end of value]
expected: FAIL
[Initial .value set on textarea-not-appended-prefocused should set selectionEnd to end of value]
expected: FAIL

6
tests/wpt/metadata/html/semantics/forms/textfieldselection/selection.html.ini
View file

@ -36,15 +36,9 @@
[test SelectionStart offset for textarea that is appended]
expected: FAIL
[test SelectionStart offset for textarea that is not appended]
expected: FAIL
[test SelectionEnd offset for input that is appended]
expected: FAIL
[test SelectionEnd offset for textarea that is appended]
expected: FAIL
[test SelectionEnd offset for textarea that is not appended]
expected: FAIL

9
tests/wpt/metadata/html/semantics/forms/the-textarea-element/value-defaultValue-textContent.html.ini
View file

@ -1,17 +1,8 @@
[value-defaultValue-textContent.html]
type: testharness
[defaultValue and value treat CRLF differently]
expected: FAIL
[tests for the value setter]
expected: FAIL
[defaultValue and value are affected by textContent in combination with appending a DocumentFragment]
expected: FAIL
[defaultValue and value reflect child text content, not textContent]
expected: FAIL
[value normalizes CRLF even spread over multiple text nodes]
expected: FAIL

41
tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-value-interactions.html
View file

@ -97,22 +97,31 @@ for (var tag of ['input', 'textarea']) {
var el = document.createElement(tag);
document.body.appendChild(el);
this.add_cleanup(() => el.remove());
el.value = "";
assert_equals(el.selectionStart, el.value.length,
"element.selectionStart should be value.length");
assert_equals(el.selectionEnd, el.value.length,
"element.selectionEnd should be value.length");
el.value = "foo";
assert_equals(el.selectionStart, el.value.length,
"element.selectionStart should be value.length");
assert_equals(el.selectionEnd, el.value.length,
"element.selectionEnd should be value.length");
el.value = "foobar";
assert_equals(el.selectionStart, el.value.length,
"element.selectionStart should be value.length");
assert_equals(el.selectionEnd, el.value.length,
"element.selectionEnd should be value.length");
}, `selection is always collapsed to the end after setting values on ${tag}`);
for (let val of ["", "foo", "foobar"]) {
el.value = val;
assert_equals(el.selectionStart, val.length,
"element.selectionStart should be value.length");
assert_equals(el.selectionEnd, val.length,
"element.selectionEnd should be value.length");
}
}, `selection is collapsed to the end after changing values on ${tag}`);
test(function() {
var el = document.createElement(tag);
document.body.appendChild(el);
this.add_cleanup(() => el.remove());
el.value = "foobar"
el.selectionStart = 2
el.selectionEnd = 4
el.value = "foobar"
assert_equals(el.selectionStart, 2,
"element.selectionStart should be unchanged");
assert_equals(el.selectionEnd, 4,
"element.selectionEnd should be unchanged");
}, `selection is not collapsed to the end when value is set to its existing value on ${tag}`);
}
</script>