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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>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "ConsoleWidget.h"
#include <AK/StringBuilder.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/TextBox.h>
#include <LibGfx/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<Web::OutOfProcessWebView>();
m_output_view->load("data:text/html,<html></html>");
// 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(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/delete.png").release_value_but_fixme_should_propagate_errors());
clear_button.set_tooltip("Clear the console output");
clear_button.on_click = [this](auto) {
clear_output();
};
}
ConsoleWidget::~ConsoleWidget()
{
}
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, const Vector<String>& message_types, const Vector<String>& 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 {
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(const StringView& source)
{
StringBuilder html;
html.append("<span class=\"repl-indicator\">");
html.append("> ");
html.append("</span>");
html.append(JS::MarkupGenerator::html_from_source(source));
print_html(html.string_view());
}
void ConsoleWidget::print_html(StringView const& line)
{
StringBuilder builder;
builder.append(R"~~~(
var p = document.createElement("p");
p.innerHTML = ")~~~");
builder.append_escaped_for_json(line);
builder.append(R"~~~("
document.body.appendChild(p);
)~~~");
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.
}
void ConsoleWidget::clear_output()
{
m_output_view->run_javascript(R"~~~(
document.body.innerHTML = "";
)~~~");
}
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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