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LibWeb+LibWebView+WebContent: Support both inspecting/highlighting nodes

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Our own Inspector differs from most other DevTools implementations with
regard to highlighting DOM nodes as you hover elements in the inspected
DOM tree. In other implementations, as you change the hovered node, the
browser will render a box model overlay onto the page for that node. We
currently don't do this; we wait until you click the node, at which
point we both paint the overlay and inspect the node's properties.

This patch does not change that behavior, but separates the IPCs and
internal tracking of inspected nodes to support the standard DevTools
behavior. So the DOM document now stores an inspected node and a
highlighted node. The former is used for features such as "$0" in the
JavaScript console, and the latter is used for the box model overlay.
Our Inspector continues to set these to the same node.
This commit is contained in:
Timothy Flynn 2025-02-21 09:34:02 -05:00 • committed by Tim Flynn
commit 72905c84d5
Notes: github-actions[bot] 2025-02-24 17:07:12 +00:00
10 changed files with 83 additions and 34 deletions
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8
Libraries/LibWebView/ViewImplementation.h
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@ -103,11 +103,15 @@ public:
void get_source();
void inspect_dom_tree();
void inspect_dom_node(Web::UniqueNodeID node_id, Optional<Web::CSS::Selector::PseudoElement::Type> pseudo_element);
void inspect_accessibility_tree();
void clear_inspected_dom_node();
void get_hovered_node_id();
void inspect_dom_node(Web::UniqueNodeID node_id, Optional<Web::CSS::Selector::PseudoElement::Type> pseudo_element);
void clear_inspected_dom_node();
void highlight_dom_node(Web::UniqueNodeID node_id, Optional<Web::CSS::Selector::PseudoElement::Type> pseudo_element);
void clear_highlighted_dom_node();
void set_dom_node_text(Web::UniqueNodeID node_id, String text);
void set_dom_node_tag(Web::UniqueNodeID node_id, String name);
void add_dom_node_attributes(Web::UniqueNodeID node_id, Vector<Attribute> attributes);