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/*
* Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "ConsoleWidget.h"
#include <AK/StringBuilder.h>
#include <Applications/Browser/Browser.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/TextBox.h>
#include <LibGfx/Font/FontDatabase.h>
#include <LibJS/MarkupGenerator.h>
#include <LibJS/SyntaxHighlighter.h>
namespace Browser {
ConsoleWidget::ConsoleWidget()
{
set_layout<GUI::VerticalBoxLayout>();
set_fill_with_background_color(true);
m_output_view = add<WebView::OutOfProcessWebView>();
m_output_view->load("data:text/html,<html></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);
};
auto& bottom_container = add<GUI::Widget>();
bottom_container.set_layout<GUI::HorizontalBoxLayout>();
bottom_container.set_fixed_height(22);
m_input = bottom_container.add<GUI::TextBox>();
m_input->set_syntax_highlighter(make<JS::SyntaxHighlighter>());
// FIXME: Syntax Highlighting breaks the cursor's position on non fixed-width fonts.
m_input->set_font(Gfx::FontDatabase::default_fixed_width_font());
m_input->set_history_enabled(true);
m_input->on_return_pressed = [this] {
auto js_source = m_input->text();
// FIXME: An is_blank check to check if there is only whitespace would probably be preferable.
if (js_source.is_empty())
return;
m_input->add_current_text_to_history();
m_input->clear();
print_source_line(js_source);
if (on_js_input)
on_js_input(js_source);
};
set_focus_proxy(m_input);
auto& clear_button = bottom_container.add<GUI::Button>();
clear_button.set_fixed_size(22, 22);
clear_button.set_icon(g_icon_bag.delete_icon);
clear_button.set_tooltip("Clear the console output");
clear_button.on_click = [this](auto) {
clear_output();
};
}
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<String> const& message_types, Vector<String> 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("> "sv);
html.append("</span>"sv);
html.append(JS::MarkupGenerator::html_from_source(source));
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.innerText = ")~~~",
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();
}
void ConsoleWidget::reset()
{
clear_output();
m_highest_notified_message_index = -1;
m_highest_received_message_index = -1;
m_waiting_for_messages = false;
}
}
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