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initial insertAdjacentHTML attempt

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nikneym
2025-09-24 20:21:08 +03:00
parent eff7d58f4b
commit 255b45d07b
1 changed files with 65 additions and 0 deletions
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65
src/browser/dom/element.zig
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@@ -231,6 +231,71 @@ pub const Element = struct {
}
}
/// Parses the given `input` string and inserts it's children to an element at given `position`.
/// https://developer.mozilla.org/en-US/docs/Web/API/Element/insertAdjacentHTML
///
/// TODO: Support for XML parsing and `TrustedHTML` instances.
pub fn _insertAdjacentHTML(self: *parser.Element, position: []const u8, input: []const u8) !void {
const self_node = parser.elementToNode(self);
const doc = parser.nodeOwnerDocument(self_node) orelse {
return parser.DOMError.WrongDocument;
};
// Parse the fragment.
const fragment = try parser.documentParseFragmentFromStr(doc, input);
const fragment_node = parser.documentFragmentToNode(fragment);
// We always get it wrapped like so:
// <html><head></head><body>{ ... }</body></html>
const html = parser.nodeFirstChild(fragment_node) orelse return;
const head = parser.nodeFirstChild(html) orelse return;
const body = parser.nodeNextSibling(head) orelse return;
const children = try parser.nodeGetChildNodes(body);
const len = parser.nodeListLength(children);
if (std.mem.eql(u8, position, "beforeend")) {
for (0..len) |_| {
const child = parser.nodeListItem(children, 0) orelse continue;
_ = try parser.nodeInsertBefore(self_node, child, null);
}
} else if (std.mem.eql(u8, position, "afterbegin")) {
const target = parser.nodeFirstChild(self_node) orelse self_node;
for (0..len) |_| {
const child = parser.nodeListItem(children, 0) orelse continue;
_ = try parser.nodeInsertBefore(target, child, null);
}
} else if (std.mem.eql(u8, position, "beforebegin")) {
const parent = parser.nodeParentNode(self_node) orelse {
return error.NoModificationAllowed;
};
// Make sure parent is not Document.
// Should also check for document_fragment and document_type?
if (parser.nodeType(parent) == .document) {
return error.NoModificationAllowed;
}
for (0..len) |_| {
const child = parser.nodeListItem(children, 0) orelse continue;
_ = try parser.nodeInsertBefore(parent, child, self_node);
}
} else if (std.mem.eql(u8, position, "afterend")) {
const parent = parser.nodeParentNode(self_node) orelse {
return error.NoModificationAllowed;
};
if (parser.nodeType(parent) == .document) {
return error.NoModificationAllowed;
}
for (0..len) |_| {
const child = parser.nodeListItem(children, 0) orelse continue;
_ = try parser.nodeInsertBefore(parent, child, null);
}
}
}
// The closest() method of the Element interface traverses the element and its parents (heading toward the document root) until it finds a node that matches the specified CSS selector.
// Returns the closest ancestor Element or itself, which matches the selectors. If there are no such element, null.
pub fn _closest(self: *parser.Element, selector: []const u8, page: *Page) !?*parser.Element {