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/*
* Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
*
* 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/Interpreter.h>
#include <LibJS/MarkupGenerator.h>
#include <LibJS/Parser.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/SyntaxHighlighter.h>
#include <LibWeb/Bindings/DOMExceptionWrapper.h>
#include <LibWeb/DOM/DocumentType.h>
#include <LibWeb/DOM/ElementFactory.h>
#include <LibWeb/DOM/Text.h>
#include <LibWeb/DOMTreeModel.h>
#include <LibWeb/HTML/HTMLBodyElement.h>
namespace Browser {
ConsoleWidget::ConsoleWidget()
{
set_layout<GUI::VerticalBoxLayout>();
set_fill_with_background_color(true);
auto base_document = Web::DOM::Document::create();
base_document->append_child(adopt(*new Web::DOM::DocumentType(base_document)));
auto html_element = base_document->create_element("html");
base_document->append_child(html_element);
auto head_element = base_document->create_element("head");
html_element->append_child(head_element);
auto body_element = base_document->create_element("body");
html_element->append_child(body_element);
m_output_container = body_element;
m_output_view = add<Web::InProcessWebView>();
m_output_view->set_document(base_document);
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);
// no interpreter being set means we are running in multi-process mode
if (!m_interpreter)
return;
auto parser = JS::Parser(JS::Lexer(js_source));
auto program = parser.parse_program();
StringBuilder output_html;
if (parser.has_errors()) {
auto error = parser.errors()[0];
auto hint = error.source_location_hint(js_source);
if (!hint.is_empty())
output_html.append(String::formatted("<pre>{}</pre>", escape_html_entities(hint)));
m_interpreter->vm().throw_exception<JS::SyntaxError>(m_interpreter->global_object(), error.to_string());
} else {
m_interpreter->run(m_interpreter->global_object(), *program);
}
if (m_interpreter->exception()) {
auto* exception = m_interpreter->exception();
m_interpreter->vm().clear_exception();
output_html.append("Uncaught exception: ");
auto error = exception->value();
if (error.is_object())
output_html.append(JS::MarkupGenerator::html_from_error(error.as_object()));
else
output_html.append(JS::MarkupGenerator::html_from_value(error));
print_html(output_html.string_view());
return;
}
print_html(JS::MarkupGenerator::html_from_value(m_interpreter->vm().last_value()));
};
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::load_from_file("/res/icons/16x16/delete.png"));
clear_button.set_tooltip("Clear the console output");
clear_button.on_click = [this](auto) {
clear_output();
};
}
ConsoleWidget::~ConsoleWidget()
{
}
void ConsoleWidget::handle_js_console_output(const String& method, const String& line)
{
if (method == "html") {
print_html(line);
} else if (method == "clear") {
clear_output();
}
}
void ConsoleWidget::set_interpreter(WeakPtr<JS::Interpreter> interpreter)
{
if (m_interpreter.ptr() == interpreter.ptr())
return;
m_interpreter = interpreter;
m_console_client = make<BrowserConsoleClient>(interpreter->global_object().console(), *this);
interpreter->global_object().console().set_client(*m_console_client.ptr());
clear_output();
}
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(const StringView& line)
{
auto paragraph = m_output_container->document().create_element("p");
paragraph->set_inner_html(line);
m_output_container->append_child(paragraph);
m_output_container->document().invalidate_layout();
m_output_container->document().update_layout();
m_output_view->scroll_to_bottom();
}
void ConsoleWidget::clear_output()
{
m_output_container->remove_all_children();
m_output_view->update();
}
}
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