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ladybird/Libraries/LibDevTools/Actors/InspectorActor.cpp
Timothy Flynn 49adec1396 LibDevTools: Add a helper to handle asynchronous request replies
This removes some boilerplate around executing async requests, such as
calling dbgln_if on any errors, handling weak pointers to `this`, and
dealing with block tokens.
2025-03-12 12:48:05 -04:00

110 lines
3.3 KiB
C++

/*
* Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Debug.h>
#include <AK/JsonObject.h>
#include <LibDevTools/Actors/HighlighterActor.h>
#include <LibDevTools/Actors/InspectorActor.h>
#include <LibDevTools/Actors/PageStyleActor.h>
#include <LibDevTools/Actors/TabActor.h>
#include <LibDevTools/Actors/WalkerActor.h>
#include <LibDevTools/DevToolsDelegate.h>
#include <LibDevTools/DevToolsServer.h>
namespace DevTools {
NonnullRefPtr<InspectorActor> InspectorActor::create(DevToolsServer& devtools, String name, WeakPtr<TabActor> tab)
{
return adopt_ref(*new InspectorActor(devtools, move(name), move(tab)));
}
InspectorActor::InspectorActor(DevToolsServer& devtools, String name, WeakPtr<TabActor> tab)
: Actor(devtools, move(name))
, m_tab(move(tab))
{
}
InspectorActor::~InspectorActor() = default;
void InspectorActor::handle_message(StringView type, JsonObject const& message)
{
JsonObject response;
if (type == "getPageStyle"sv) {
if (!m_page_style)
m_page_style = devtools().register_actor<PageStyleActor>(*this);
response.set("pageStyle"sv, m_page_style->serialize_style());
send_message(move(response));
return;
}
if (type == "getHighlighterByType"sv) {
auto type_name = get_required_parameter<String>(message, "typeName"sv);
if (!type_name.has_value())
return;
auto highlighter = m_highlighters.ensure(*type_name, [&]() -> NonnullRefPtr<HighlighterActor> {
return devtools().register_actor<HighlighterActor>(*this);
});
response.set("highlighter"sv, highlighter->serialize_highlighter());
send_message(move(response));
return;
}
if (type == "getWalker"sv) {
if (auto tab = m_tab.strong_ref()) {
devtools().delegate().inspect_tab(tab->description(),
async_handler<InspectorActor>([](auto& self, auto dom_tree, auto& response) {
if (!WalkerActor::is_suitable_for_dom_inspection(dom_tree)) {
dbgln_if(DEVTOOLS_DEBUG, "Did not receive a suitable DOM tree: {}", dom_tree);
return;
}
self.received_dom_tree(response, move(dom_tree.as_object()));
}));
}
return;
}
if (type == "supportsHighlighters"sv) {
response.set("value"sv, true);
send_message(move(response));
return;
}
send_unrecognized_packet_type_error(type);
}
void InspectorActor::received_dom_tree(JsonObject& response, JsonObject dom_tree)
{
auto& walker_actor = devtools().register_actor<WalkerActor>(m_tab, move(dom_tree));
m_walker = walker_actor;
JsonObject walker;
walker.set("actor"sv, walker_actor.name());
walker.set("root"sv, walker_actor.serialize_root());
response.set("walker"sv, move(walker));
}
RefPtr<TabActor> InspectorActor::tab_for(WeakPtr<InspectorActor> const& weak_inspector)
{
if (auto inspector = weak_inspector.strong_ref())
return inspector->m_tab.strong_ref();
return {};
}
RefPtr<WalkerActor> InspectorActor::walker_for(WeakPtr<InspectorActor> const& weak_inspector)
{
if (auto inspector = weak_inspector.strong_ref())
return inspector->m_walker.strong_ref();
return {};
}
}