This fixes a bug in MCP where interactive elements were not assigned
a backendNodeId, preventing agents from clicking or filling them. Also
extracts link collection to a shared browser module.
CDPT used to be a generic so that we could inject Browser, Session, Page and
Client. At some point, it [thankfully] became a generic only to inject Client.
This commit removes the generic and bakes the *Server.Client instance in CDP.
It uses a socketpair for testing.
BrowserContext is still generic, but that's generic for a very different reason
and, while I'd like to remove that generic too, it belongs in a different PR.
This is done for a couple reasons. The first is just to have things a little
more self-contained for eventually supporting more advanced "wait" logic, e.g.
waiting for a selector.
The other is to provide callers with more fine-grained controlled. Specifically
the ability to manually "tick", so that they can [presumably] do something
after every tick. This is needed by the test runner to support more advanced
cases (cases that need to test beyond 'load') and it also improves (and fixes
potential use-after-free, the lp.waitForSelector)
Add a detectForms MCP tool and lp.detectForms CDP command that return
structured form metadata from the current page. Each form includes its
action URL, HTTP method, and fields with names, types, required status,
values, select options, and backendNodeIds for use with the fill tool.
This lets AI agents discover and fill forms in a single step instead of
calling interactiveElements, filtering for form fields, and guessing
which fields belong to which form.
New files:
- src/browser/forms.zig: FormInfo/FormField structs, collectForms()
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Small tweaks to https://github.com/lightpanda-io/browser/pull/1896
Improve the wait ergonomics with an Option with default parameter. Revert
page pointer logic to original (don't think that change was necessary).
Add `--wait_until` and `--wait_ms` CLI arguments to configure session wait behavior. Updates `Session.wait` to evaluate specific page load states (`load`, `domcontentloaded`, `networkidle`, `fixed`) before completing the wait loop.
- TreeWalker.Full instead of FullExcludeSelf so querying a specific
nodeId evaluates the root element itself
- resolve href to absolute URL via URL.resolve
- isDisabled checks ancestor <fieldset disabled> with legend exemption
- parameter order: allocator before *Page per convention
Returns a structured list of all interactive elements on a page:
buttons, links, inputs, ARIA widgets, contenteditable regions, and
elements with event listeners. Includes accessible names, roles,
listener types, and key attributes.
Event listener introspection (both addEventListener and inline
handlers) is unique to LP — no other browser exposes this to
automation code.
This PR introduces a custom CDP domain 'LP' (Lightpanda) to expose browser-specific tools. The first method, 'LP.getMarkdown', allows retrieving a Markdown representation of the DOM or a specific node by its 'nodeId'. This is optimized for AI agents and LLM-based scraping tasks.
