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headless-browser: Add a mode to dump the layout tree after load finish

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Timothy Flynn 2023-03-13 07:23:32 -04:00 committed by Linus Groh
parent 2845a8e139
commit 7090f74524
Notes: sideshowbarker 2024-07-17 16:23:55 +09:00 
Author: https://github.com/trflynn89
Commit: https://github.com/SerenityOS/serenity/commit/7090f74524
Pull-request: https://github.com/SerenityOS/serenity/pull/17836
Reviewed-by: https://github.com/linusg ✅
1 changed files with 31 additions and 5 deletions
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36
Userland/Utilities/headless-browser.cpp
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@ -13,6 +13,7 @@
#include <AK/Badge.h>
#include <AK/DeprecatedString.h>
#include <AK/Function.h>
#include <AK/LexicalPath.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/String.h>
@ -74,6 +75,13 @@ public:
return client().take_document_screenshot().bitmap();
}
ErrorOr<String> dump_layout_tree()
{
return String::from_deprecated_string(client().dump_layout_tree());
}
Function<void(const URL&)> on_load_finish;
private:
HeadlessWebContentView() = default;
@ -93,7 +101,13 @@ private:
void notify_server_did_click_link(Badge<WebView::WebContentClient>, const URL&, DeprecatedString const&, unsigned) override { }
void notify_server_did_middle_click_link(Badge<WebView::WebContentClient>, const URL&, DeprecatedString const&, unsigned) override { }
void notify_server_did_start_loading(Badge<WebView::WebContentClient>, const URL&, bool) override { }
void notify_server_did_finish_loading(Badge<WebView::WebContentClient>, const URL&) override { }
void notify_server_did_finish_loading(Badge<WebView::WebContentClient>, const URL& url) override
{
if (on_load_finish)
on_load_finish(url);
}
void notify_server_did_request_navigate_back(Badge<WebView::WebContentClient>) override { }
void notify_server_did_request_navigate_forward(Badge<WebView::WebContentClient>) override { }
void notify_server_did_request_refresh(Badge<WebView::WebContentClient>) override { }
@ -195,10 +209,12 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
StringView url;
auto resources_folder = "/res"sv;
StringView web_driver_ipc_path;
bool dump_layout_tree = false;
Core::ArgsParser args_parser;
args_parser.set_general_help("This utility runs the Browser in headless mode.");
args_parser.add_option(screenshot_timeout, "Take a screenshot after [n] seconds (default: 1)", "screenshot", 's', "n");
args_parser.add_option(dump_layout_tree, "Dump layout tree and exit", "dump-layout-tree", 'd');
args_parser.add_option(resources_folder, "Path of the base resources folder (defaults to /res)", "resources", 'r', "resources-root-path");
args_parser.add_option(web_driver_ipc_path, "Path to the WebDriver IPC socket", "webdriver-ipc-path", 0, "path");
args_parser.add_positional_argument(url, "URL to open", "url", Core::ArgsParser::Required::Yes);
@ -218,11 +234,21 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
static constexpr Gfx::IntSize window_size { 800, 600 };
auto view = TRY(HeadlessWebContentView::create(move(theme), window_size, web_driver_ipc_path));
view->load(TRY(format_url(url)));
RefPtr<Core::Timer> timer;
if (web_driver_ipc_path.is_empty())
timer = TRY(load_page_for_screenshot_and_exit(event_loop, *view, screenshot_timeout));
if (dump_layout_tree) {
view->on_load_finish = [&](auto const&) {
auto layout_tree = view->dump_layout_tree().release_value_but_fixme_should_propagate_errors();
outln("{}", layout_tree);
fflush(stdout);
event_loop.quit(0);
};
} else if (web_driver_ipc_path.is_empty()) {
timer = TRY(load_page_for_screenshot_and_exit(event_loop, *view, screenshot_timeout));
}
view->load(TRY(format_url(url)));
return event_loop.exec();
}