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Handle cases where selection API doesn't apply
The selection API only applies to certain <input> types: https://html.spec.whatwg.org/multipage/#do-not-apply This commit ensures that we handle that correctly. Some notes: 1. TextControl::set_dom_selection_direction now calls set_selection_range(), which means that setting selectionDirection will now fire a selection event, as it should per the spec. 2. There is a test for the firing of the select event in tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/select-event.html, however the test did not run due to this syntax error: (pid:26017) "ERROR:script::dom::bindings::error: Error at http://web-platform.test:8000/html/semantics/forms/textfieldselection/select-event.html:50:11 missing = in const declaration" This happens due to the us of the "for (const foo of ...)" construct. Per https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...of this should actually work, so it's somewhat unsatisfying to have to change the test. 4. If an <input>'s type is unset, it defaults to a text, and the selection API applies. Also, if an <input>'s type is set to an invalid value, it defaults to a text too. I've expanded the tests to account for this second case.
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parent
e646471888
commit
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12 changed files with 372 additions and 114 deletions
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@ -4,6 +4,7 @@
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use dom::bindings::cell::DomRefCell;
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use dom::bindings::conversions::DerivedFrom;
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use dom::bindings::error::{Error, ErrorResult};
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use dom::bindings::str::DOMString;
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use dom::event::{EventBubbles, EventCancelable};
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use dom::eventtarget::EventTarget;
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@ -13,52 +14,108 @@ use textinput::{SelectionDirection, TextInput};
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pub trait TextControl: DerivedFrom<EventTarget> + DerivedFrom<Node> {
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fn textinput(&self) -> &DomRefCell<TextInput<ScriptToConstellationChan>>;
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fn selection_api_applies(&self) -> bool;
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// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionstart
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fn dom_selection_start(&self) -> u32 {
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self.textinput().borrow().get_selection_start()
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fn get_dom_selection_start(&self) -> Option<u32> {
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// Step 1
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if !self.selection_api_applies() {
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return None;
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}
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// Steps 2-3
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Some(self.selection_start())
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}
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// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionstart
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fn set_dom_selection_start(&self, start: u32) {
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fn set_dom_selection_start(&self, start: Option<u32>) -> ErrorResult {
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// Step 1
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if !self.selection_api_applies() {
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return Err(Error::InvalidState);
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}
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// Step 2
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let mut end = self.dom_selection_end();
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let mut end = self.selection_end();
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// Step 3
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if end < start {
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end = start;
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if let Some(s) = start {
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if end < s {
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end = s;
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}
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}
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// Step 4
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self.set_selection_range(start, end, self.selection_direction());
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self.set_selection_range(start, Some(end), Some(self.selection_direction()));
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Ok(())
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}
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// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionend
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fn dom_selection_end(&self) -> u32 {
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self.textinput().borrow().get_absolute_insertion_point() as u32
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fn get_dom_selection_end(&self) -> Option<u32> {
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// Step 1
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if !self.selection_api_applies() {
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return None;
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}
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// Steps 2-3
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Some(self.selection_end())
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}
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// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionend
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fn set_dom_selection_end(&self, end: u32) {
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self.set_selection_range(self.dom_selection_start(), end, self.selection_direction());
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fn set_dom_selection_end(&self, end: Option<u32>) -> ErrorResult {
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// Step 1
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if !self.selection_api_applies() {
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return Err(Error::InvalidState);
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}
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// Step 2
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self.set_selection_range(Some(self.selection_start()), end, Some(self.selection_direction()));
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Ok(())
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}
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// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectiondirection
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fn dom_selection_direction(&self) -> DOMString {
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DOMString::from(self.selection_direction())
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fn get_dom_selection_direction(&self) -> Option<DOMString> {
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// Step 1
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if !self.selection_api_applies() {
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return None;
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}
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Some(DOMString::from(self.selection_direction()))
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}
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// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectiondirection
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fn set_dom_selection_direction(&self, direction: DOMString) {
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self.textinput().borrow_mut().selection_direction = SelectionDirection::from(direction);
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fn set_dom_selection_direction(&self, direction: Option<DOMString>) -> ErrorResult {
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// Step 1
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if !self.selection_api_applies() {
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return Err(Error::InvalidState);
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}
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// Step 2
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self.set_selection_range(
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Some(self.selection_start()),
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Some(self.selection_end()),
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direction.map(|d| SelectionDirection::from(d))
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);
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Ok(())
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}
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// https://html.spec.whatwg.org/multipage/#dom-textarea/input-setselectionrange
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fn set_dom_selection_range(&self, start: u32, end: u32, direction: Option<DOMString>) {
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// Step 4
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let direction = direction.map_or(SelectionDirection::None, |d| SelectionDirection::from(d));
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fn set_dom_selection_range(&self, start: u32, end: u32, direction: Option<DOMString>) -> ErrorResult {
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// Step 1
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if !self.selection_api_applies() {
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return Err(Error::InvalidState);
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}
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self.set_selection_range(start, end, direction);
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// Step 2
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self.set_selection_range(Some(start), Some(end), direction.map(|d| SelectionDirection::from(d)));
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Ok(())
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}
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fn selection_start(&self) -> u32 {
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self.textinput().borrow().get_selection_start()
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}
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fn selection_end(&self) -> u32 {
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self.textinput().borrow().get_absolute_insertion_point() as u32
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}
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fn selection_direction(&self) -> SelectionDirection {
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@ -66,12 +123,15 @@ pub trait TextControl: DerivedFrom<EventTarget> + DerivedFrom<Node> {
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}
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// https://html.spec.whatwg.org/multipage/#set-the-selection-range
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fn set_selection_range(&self, start: u32, end: u32, direction: SelectionDirection) {
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// Step 5
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self.textinput().borrow_mut().selection_direction = direction;
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fn set_selection_range(&self, start: Option<u32>, end: Option<u32>, direction: Option<SelectionDirection>) {
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// Step 1
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let start = start.unwrap_or(0);
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// Step 3
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self.textinput().borrow_mut().set_selection_range(start, end);
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// Step 2
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let end = end.unwrap_or(0);
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// Steps 3-5
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self.textinput().borrow_mut().set_selection_range(start, end, direction.unwrap_or(SelectionDirection::None));
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// Step 6
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let window = window_from_node(self);
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