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Ladybird+LibWebView: Extract common JS console functionality to a helper

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This creates WebView::ConsoleClient to handle functionality that will be
common to the JS consoles of all Ladybird chromes. This will let each
chrome focus on just the UI.

Note that this includes the `console.group` functionality that only the
Serenity chrome previously had. This was a FIXME in the Qt chrome, and
it is implemented such that all chromes will receive this functionality
for free.
This commit is contained in:
Timothy Flynn 2023-08-29 11:44:18 -04:00 • committed by Andrew Kaster
parent c9b9278092
commit bf59e06d2a
11 changed files with 300 additions and 366 deletions
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176
Userland/Applications/Browser/ConsoleWidget.cpp
View file

@ -16,22 +16,18 @@
#include <LibGfx/Font/FontDatabase.h>
#include <LibJS/MarkupGenerator.h>
#include <LibJS/SyntaxHighlighter.h>
#include <LibWebView/ConsoleClient.h>
#include <LibWebView/OutOfProcessWebView.h>
namespace Browser {
ConsoleWidget::ConsoleWidget()
ConsoleWidget::ConsoleWidget(WebView::OutOfProcessWebView& content_view)
{
set_layout<GUI::VerticalBoxLayout>();
set_fill_with_background_color(true);
m_output_view = add<WebView::OutOfProcessWebView>();
m_output_view->use_native_user_style_sheet();
m_output_view->load("data:text/html,<html style=\"font: 10pt monospace;\"></html>"sv);
// Wait until our output WebView is loaded, and then request any messages that occurred before we existed
m_output_view->on_load_finish = [this](auto&) {
if (on_request_messages)
on_request_messages(0);
};
m_console_client = make<WebView::ConsoleClient>(content_view, *m_output_view);
auto& bottom_container = add<GUI::Widget>();
bottom_container.set_layout<GUI::HorizontalBoxLayout>();
@ -52,10 +48,7 @@ ConsoleWidget::ConsoleWidget()
m_input->add_current_text_to_history();
m_input->clear();
print_source_line(js_source);
if (on_js_input)
on_js_input(js_source);
m_console_client->execute(js_source);
};
set_focus_proxy(m_input);
@ -65,168 +58,15 @@ ConsoleWidget::ConsoleWidget()
clear_button.set_icon(g_icon_bag.delete_icon);
clear_button.set_tooltip_deprecated("Clear the console output");
clear_button.on_click = [this](auto) {
clear_output();
m_console_client->clear();
};
}
void ConsoleWidget::request_console_messages()
{
VERIFY(!m_waiting_for_messages);
VERIFY(on_request_messages);
on_request_messages(m_highest_received_message_index + 1);
m_waiting_for_messages = true;
}
void ConsoleWidget::notify_about_new_console_message(i32 message_index)
{
if (message_index <= m_highest_received_message_index) {
dbgln("Notified about console message we already have");
return;
}
if (message_index <= m_highest_notified_message_index) {
dbgln("Notified about console message we're already aware of");
return;
}
m_highest_notified_message_index = message_index;
if (!m_waiting_for_messages)
request_console_messages();
}
void ConsoleWidget::handle_console_messages(i32 start_index, Vector<DeprecatedString> const& message_types, Vector<DeprecatedString> const& messages)
{
i32 end_index = start_index + message_types.size() - 1;
if (end_index <= m_highest_received_message_index) {
dbgln("Received old console messages");
return;
}
for (size_t i = 0; i < message_types.size(); i++) {
auto& type = message_types[i];
auto& message = messages[i];
if (type == "html") {
print_html(message);
} else if (type == "clear") {
clear_output();
} else if (type == "group") {
begin_group(message, true);
} else if (type == "groupCollapsed") {
begin_group(message, false);
} else if (type == "groupEnd") {
end_group();
} else {
VERIFY_NOT_REACHED();
}
}
m_highest_received_message_index = end_index;
m_waiting_for_messages = false;
if (m_highest_received_message_index < m_highest_notified_message_index)
request_console_messages();
}
void ConsoleWidget::print_source_line(StringView source)
{
StringBuilder html;
html.append("<span class=\"repl-indicator\">"sv);
html.append("&gt; "sv);
html.append("</span>"sv);
html.append(JS::MarkupGenerator::html_from_source(source).release_value_but_fixme_should_propagate_errors());
print_html(html.string_view());
}
void ConsoleWidget::print_html(StringView line)
{
StringBuilder builder;
int parent_id = m_group_stack.is_empty() ? 0 : m_group_stack.last().id;
if (parent_id == 0) {
builder.append(R"~~~(
var parentGroup = document.body;
)~~~"sv);
} else {
builder.appendff(R"~~~(
var parentGroup = document.getElementById("group_{}");
)~~~",
parent_id);
}
builder.append(R"~~~(
var p = document.createElement("p");
p.innerHTML = ")~~~"sv);
builder.append_escaped_for_json(line);
builder.append(R"~~~("
parentGroup.appendChild(p);
)~~~"sv);
m_output_view->run_javascript(builder.string_view());
// FIXME: Make it scroll to the bottom, using `window.scrollTo()` in the JS above.
// We used to call `m_output_view->scroll_to_bottom();` here, but that does not work because
// it runs synchronously, meaning it happens before the HTML is output via IPC above.
// (See also: begin_group())
}
void ConsoleWidget::clear_output()
{
m_group_stack.clear();
m_output_view->run_javascript(R"~~~(
document.body.innerHTML = "";
)~~~"sv);
}
void ConsoleWidget::begin_group(StringView label, bool start_expanded)
{
StringBuilder builder;
int parent_id = m_group_stack.is_empty() ? 0 : m_group_stack.last().id;
if (parent_id == 0) {
builder.append(R"~~~(
var parentGroup = document.body;
)~~~"sv);
} else {
builder.appendff(R"~~~(
var parentGroup = document.getElementById("group_{}");
)~~~",
parent_id);
}
Group group;
group.id = m_next_group_id++;
group.label = label;
builder.appendff(R"~~~(
var group = document.createElement("details");
group.id = "group_{}";
var label = document.createElement("summary");
label.innerHTML = ")~~~",
group.id);
builder.append_escaped_for_json(label);
builder.append(R"~~~(";
group.appendChild(label);
parentGroup.appendChild(group);
)~~~"sv);
if (start_expanded)
builder.append("group.open = true;"sv);
m_output_view->run_javascript(builder.string_view());
// FIXME: Scroll console to bottom - see note in print_html()
m_group_stack.append(group);
}
void ConsoleWidget::end_group()
{
m_group_stack.take_last();
}
ConsoleWidget::~ConsoleWidget() = default;
void ConsoleWidget::reset()
{
clear_output();
m_highest_notified_message_index = -1;
m_highest_received_message_index = -1;
m_waiting_for_messages = false;
m_console_client->reset();
}
}