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LibWeb: Update live DOM ranges on Text and CharacterData mutations

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Taking care of the FIXMEs I added in earlier patches. :^)
This commit is contained in:
Andreas Kling 2022-03-21 20:05:25 +01:00
parent c74b1b6d65
commit 1254758b00
4 changed files with 60 additions and 11 deletions
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26
Userland/Libraries/LibWeb/DOM/Text.cpp
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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/DOM/Range.h>
#include <LibWeb/DOM/Text.h>
#include <LibWeb/HTML/HTMLInputElement.h>
#include <LibWeb/HTML/Window.h>
@ -58,13 +59,30 @@ ExceptionOr<NonnullRefPtr<Text>> Text::split_text(size_t offset)
// 1. Insert new node into parent before node’s next sibling.
parent->insert_before(new_node, next_sibling());
// FIXME: 2. For each live range whose start node is node and start offset is greater than offset, set its start node to new node and decrease its start offset by offset.
// 2. For each live range whose start node is node and start offset is greater than offset, set its start node to new node and decrease its start offset by offset.
for (auto& range : Range::live_ranges()) {
if (range->start_container() == this && range->start_offset() > offset)
range->set_start(new_node, range->start_offset() - offset);
}
// FIXME: 3. For each live range whose end node is node and end offset is greater than offset, set its end node to new node and decrease its end offset by offset.
// 3. For each live range whose end node is node and end offset is greater than offset, set its end node to new node and decrease its end offset by offset.
for (auto& range : Range::live_ranges()) {
if (range->end_container() == this && range->end_offset() > offset)
range->set_end(new_node, range->end_offset() - offset);
}
// FIXME: 4. For each live range whose start node is parent and start offset is equal to the index of node plus 1, increase its start offset by 1.
// 4. For each live range whose start node is parent and start offset is equal to the index of node plus 1, increase its start offset by 1.
for (auto& range : Range::live_ranges()) {
if (range->start_container() == this && range->start_offset() == index() + 1)
range->set_start(*range->start_container(), range->start_offset() + 1);
}
// FIXME: 5. For each live range whose end node is parent and end offset is equal to the index of node plus 1, increase its end offset by 1.
// 5. For each live range whose end node is parent and end offset is equal to the index of node plus 1, increase its end offset by 1.
for (auto& range : Range::live_ranges()) {
if (range->end_container() == parent && range->end_offset() == index() + 1) {
range->set_end(*range->end_container(), range->end_offset() + 1);
}
}
}
// 8. Replace data with node node, offset offset, count count, and data the empty string.