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LibWeb: Add basic support for dynamic markup insertion

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This implements basic support for dynamic markup insertion, adding
 * Document::open()
 * Document::write(Vector<String> const&)
 * Document::writeln(Vector<String> const&)
 * Document::close()

The HTMLParser is modified to make it possible to create a
script-created parser which initially only contains a HTMLTokenizer
without any data. Aditionally the HTMLParser::run method gains an
overload which does not modify the Document and does not run
HTMLParser::the_end() so that we can reenter the parser at a later time.
Furthermore all FIXMEs that consern the insertion point are implemented
wich is defined in the HTMLTokenizer. Additionally the following
member-variables of the HTMLParser are now exposed by getter funcions:
 * m_tokenizer
 * m_aborted
 * m_script_nesting_level

The HTMLTokenizer is modified so that it contains an insertion
point which keeps track of where the next input from the Document::write
functions will be inserted. The insertion point is implemented as the
charakter offset into m_decoded_input and a boolean describing if the
insertion point is defined. Functions to update, check and {re}store the
insertion point are also added.
The function HTMLTokenizer::insert_eof is added to tell a script-created
parser that document::close was called and HTMLParser::the_end() should
be called.
Lastly an explicit default constructor is added to HTMLTokenizer to
create a empty HTMLTokenizer into which data can be inserted.
This commit is contained in:
Lorenz Steinert 2022-02-19 15:58:21 +01:00 • committed by Andreas Kling
parent d29d9462e9
commit db789813c9
7 changed files with 282 additions and 19 deletions
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8
Userland/Libraries/LibWeb/DOM/Document.idl
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@ -32,8 +32,12 @@ interface Document : Node {
readonly attribute Window? defaultView;
undefined write(DOMString... text);
undefined writeln(DOMString... text);
[CEReactions] Document open(optional DOMString unused1, optional DOMString unused2);
// FIXME: implement ExceptionOr<Window> Document::open(...)
// WindowProxy? open(USVString url, DOMString name, DOMString features);
[CEReactions] undefined close();
[CEReactions] undefined write(DOMString... text);
[CEReactions] undefined writeln(DOMString... text);
attribute DOMString cookie;