diff options
Diffstat (limited to 'components/script/dom/range.rs')
| -rw-r--r-- | components/script/dom/range.rs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/components/script/dom/range.rs b/components/script/dom/range.rs index e9e62a9cdc0..1aabc0fc540 100644 --- a/components/script/dom/range.rs +++ b/components/script/dom/range.rs @@ -2,6 +2,7 @@ * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at https://mozilla.org/MPL/2.0/. */ +use crate::dom::bindings::cell::DomRefCell; use crate::dom::bindings::codegen::Bindings::CharacterDataBinding::CharacterDataMethods; use crate::dom::bindings::codegen::Bindings::NodeBinding::NodeConstants; use crate::dom::bindings::codegen::Bindings::NodeBinding::NodeMethods; @@ -24,6 +25,7 @@ use crate::dom::documentfragment::DocumentFragment; use crate::dom::element::Element; use crate::dom::htmlscriptelement::HTMLScriptElement; use crate::dom::node::{Node, ShadowIncluding, UnbindContext}; +use crate::dom::selection::Selection; use crate::dom::text::Text; use crate::dom::window::Window; use dom_struct::dom_struct; @@ -37,6 +39,16 @@ pub struct Range { reflector_: Reflector, start: BoundaryPoint, end: BoundaryPoint, + // A range that belongs to a Selection needs to know about it + // so selectionchange can fire when the range changes. + // A range shouldn't belong to more than one Selection at a time, + // but from the spec as of Feb 1 2020 I can't rule out a corner case like: + // * Select a range R in document A, from node X to Y + // * Insert everything from X to Y into document B + // * Set B's selection's range to R + // which leaves R technically, and observably, associated with A even though + // it will fail the same-root-node check on many of A's selection's methods. + associated_selections: DomRefCell<Vec<Dom<Selection>>>, } impl Range { @@ -50,6 +62,7 @@ impl Range { reflector_: Reflector::new(), start: BoundaryPoint::new(start_container, start_offset), end: BoundaryPoint::new(end_container, end_offset), + associated_selections: DomRefCell::new(vec![]), } } @@ -163,6 +176,9 @@ impl Range { // https://dom.spec.whatwg.org/#concept-range-bp-set fn set_start(&self, node: &Node, offset: u32) { + if &self.start.node != node || self.start.offset.get() != offset { + self.report_change(); + } if &self.start.node != node { if self.start.node == self.end.node { node.ranges().push(WeakRef::new(&self)); @@ -178,6 +194,9 @@ impl Range { // https://dom.spec.whatwg.org/#concept-range-bp-set fn set_end(&self, node: &Node, offset: u32) { + if &self.end.node != node || self.end.offset.get() != offset { + self.report_change(); + } if &self.end.node != node { if self.end.node == self.start.node { node.ranges().push(WeakRef::new(&self)); @@ -228,6 +247,26 @@ impl Range { // Step 6. Ok(Ordering::Equal) } + + pub fn associate_selection(&self, selection: &Selection) { + let mut selections = self.associated_selections.borrow_mut(); + if !selections.iter().any(|s| &**s == selection) { + selections.push(Dom::from_ref(selection)); + } + } + + pub fn disassociate_selection(&self, selection: &Selection) { + self.associated_selections + .borrow_mut() + .retain(|s| &**s != selection); + } + + fn report_change(&self) { + self.associated_selections + .borrow() + .iter() + .for_each(|s| s.queue_selectionchange_task()); + } } impl RangeMethods for Range { @@ -821,6 +860,9 @@ impl RangeMethods for Range { // Step 3. if start_node == end_node { if let Some(text) = start_node.downcast::<CharacterData>() { + if end_offset > start_offset { + self.report_change(); + } return text.ReplaceData(start_offset, end_offset - start_offset, DOMString::new()); } } @@ -1142,9 +1184,11 @@ impl WeakRangeVec { entry.remove(); } if &range.start.node == child { + range.report_change(); range.start.set(context.parent, offset); } if &range.end.node == child { + range.report_change(); range.end.set(context.parent, offset); } }); @@ -1169,9 +1213,11 @@ impl WeakRangeVec { entry.remove(); } if &range.start.node == node { + range.report_change(); range.start.set(sibling, range.StartOffset() + length); } if &range.end.node == node { + range.report_change(); range.end.set(sibling, range.EndOffset() + length); } }); @@ -1212,9 +1258,11 @@ impl WeakRangeVec { } if move_start { + range.report_change(); range.start.set(child, new_offset); } if move_end { + range.report_change(); range.end.set(child, new_offset); } }); @@ -1273,9 +1321,11 @@ impl WeakRangeVec { } if move_start { + range.report_change(); range.start.set(sibling, start_offset - offset); } if move_end { + range.report_change(); range.end.set(sibling, end_offset - offset); } }); @@ -1289,9 +1339,11 @@ impl WeakRangeVec { (*self.cell.get()).update(|entry| { let range = entry.root().unwrap(); if &range.start.node == node && offset == range.StartOffset() { + range.report_change(); range.start.set_offset(offset + 1); } if &range.end.node == node && offset == range.EndOffset() { + range.report_change(); range.end.set_offset(offset + 1); } }); @@ -1304,10 +1356,12 @@ impl WeakRangeVec { let range = entry.root().unwrap(); let start_offset = range.StartOffset(); if &range.start.node == node && start_offset > offset { + range.report_change(); range.start.set_offset(f(start_offset)); } let end_offset = range.EndOffset(); if &range.end.node == node && end_offset > offset { + range.report_change(); range.end.set_offset(f(end_offset)); } }); |