diff options
Diffstat (limited to 'Userland/Libraries/LibWeb/DOM/Text.cpp')
-rw-r--r-- | Userland/Libraries/LibWeb/DOM/Text.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/DOM/Text.cpp b/Userland/Libraries/LibWeb/DOM/Text.cpp index 27d8783984..ca96370727 100644 --- a/Userland/Libraries/LibWeb/DOM/Text.cpp +++ b/Userland/Libraries/LibWeb/DOM/Text.cpp @@ -27,4 +27,52 @@ void Text::set_owner_input_element(Badge<HTML::HTMLInputElement>, HTML::HTMLInpu m_owner_input_element = input_element; } +// https://dom.spec.whatwg.org/#dom-text-splittext +// https://dom.spec.whatwg.org/#concept-text-split +ExceptionOr<NonnullRefPtr<Text>> Text::split_text(size_t offset) +{ + // 1. Let length be node’s length. + auto length = this->length(); + + // 2. If offset is greater than length, then throw an "IndexSizeError" DOMException. + if (offset > length) + return DOM::IndexSizeError::create("Split offset is greater than length"); + + // 3. Let count be length minus offset. + auto count = length - offset; + + // 4. Let new data be the result of substringing data with node node, offset offset, and count count. + auto new_data_or_error = substring_data(offset, count); + if (new_data_or_error.is_exception()) + return new_data_or_error.exception(); + auto new_data = new_data_or_error.release_value(); + + // 5. Let new node be a new Text node, with the same node document as node. Set new node’s data to new data. + auto new_node = adopt_ref(*new Text(document(), new_data)); + + // 6. Let parent be node’s parent. + RefPtr<Node> parent = this->parent(); + + // 7. If parent is not null, then: + if (parent) { + // 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. + + // 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. + + // 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. + + // 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. + } + + // 8. Replace data with node node, offset offset, count count, and data the empty string. + if (auto result = replace_data(offset, count, ""); result.is_exception()) + return result.exception(); + + // 9. Return new node. + return new_node; +} + } |