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LibHTML: Add a way to get a Document's title

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You can now query Document::title() to get a String containing whatever
is inside the document's <title> tag.

In support of this, this patch adds the <html>, <head> and <title>
elements.
This commit is contained in:
Andreas Kling 2019-09-29 16:24:57 +02:00
parent 0c6af2d5b4
commit b94c7665a9
12 changed files with 116 additions and 1 deletions
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29
Libraries/LibHTML/DOM/Document.cpp
View file

@ -1,6 +1,9 @@
#include <LibHTML/CSS/StyleResolver.h>
#include <LibHTML/DOM/Document.h>
#include <LibHTML/DOM/Element.h>
#include <LibHTML/DOM/HTMLHeadElement.h>
#include <LibHTML/DOM/HTMLHtmlElement.h>
#include <LibHTML/DOM/HTMLTitleElement.h>
#include <LibHTML/Layout/LayoutDocument.h>
#include <stdio.h>
@ -34,3 +37,29 @@ void Document::normalize()
this->donate_all_children_to(body);
this->append_child(html);
}
const HTMLHtmlElement* Document::document_element() const
{
return static_cast<const HTMLHtmlElement*>(first_child_with_tag_name("html"));
}
const HTMLHeadElement* Document::head() const
{
auto* html = document_element();
if (!html)
return nullptr;
return static_cast<const HTMLHeadElement*>(html->first_child_with_tag_name("head"));
}
String Document::title() const
{
auto* head_element = head();
if (!head_element)
return {};
auto* title_element = static_cast<const HTMLTitleElement*>(head_element->first_child_with_tag_name("title"));
if (!title_element)
return {};
return title_element->text_content();
}