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#include "Editor.h"
#include "EditorWrapper.h"
#include <AK/FileSystemPath.h>
#include <LibCore/CDirIterator.h>
#include <LibCore/CFile.h>
#include <LibGUI/GApplication.h>
#include <LibGUI/GPainter.h>
#include <LibGUI/GScrollBar.h>
#include <LibGUI/GWindow.h>
#include <LibHTML/DOM/ElementFactory.h>
#include <LibHTML/DOM/HTMLHeadElement.h>
#include <LibHTML/DOM/Text.h>
#include <LibHTML/HtmlView.h>
#include <LibHTML/Parser/HTMLParser.h>
#include <LibMarkdown/MDDocument.h>
//#define EDITOR_DEBUG
Editor::Editor(GWidget* parent)
: GTextEditor(GTextEditor::MultiLine, parent)
{
m_documentation_tooltip_window = GWindow::construct();
m_documentation_tooltip_window->set_rect(0, 0, 500, 400);
m_documentation_tooltip_window->set_window_type(GWindowType::Tooltip);
m_documentation_html_view = HtmlView::construct(nullptr);
m_documentation_tooltip_window->set_main_widget(m_documentation_html_view);
}
Editor::~Editor()
{
}
EditorWrapper& Editor::wrapper()
{
return static_cast<EditorWrapper&>(*parent());
}
const EditorWrapper& Editor::wrapper() const
{
return static_cast<const EditorWrapper&>(*parent());
}
void Editor::focusin_event(CEvent& event)
{
wrapper().set_editor_has_focus({}, true);
if (on_focus)
on_focus();
GTextEditor::focusin_event(event);
}
void Editor::focusout_event(CEvent& event)
{
wrapper().set_editor_has_focus({}, false);
GTextEditor::focusout_event(event);
}
void Editor::paint_event(GPaintEvent& event)
{
GTextEditor::paint_event(event);
if (is_focused()) {
GPainter painter(*this);
painter.add_clip_rect(event.rect());
auto rect = frame_inner_rect();
if (vertical_scrollbar().is_visible())
rect.set_width(rect.width() - vertical_scrollbar().width());
if (horizontal_scrollbar().is_visible())
rect.set_height(rect.height() - horizontal_scrollbar().height());
painter.draw_rect(rect, Color::from_rgb(0x955233));
}
}
static HashMap<String, String>& man_paths()
{
static HashMap<String, String> paths;
if (paths.is_empty()) {
// FIXME: This should also search man3, possibly other places..
CDirIterator it("/usr/share/man/man2", CDirIterator::Flags::SkipDots);
while (it.has_next()) {
auto path = String::format("/usr/share/man/man2/%s", it.next_path().characters());
auto title = FileSystemPath(path).title();
paths.set(title, path);
}
}
return paths;
}
void Editor::show_documentation_tooltip_if_available(const String& hovered_token, const Point& screen_location)
{
auto it = man_paths().find(hovered_token);
if (it == man_paths().end()) {
#ifdef EDITOR_DEBUG
dbg() << "no man path for " << hovered_token;
#endif
m_documentation_tooltip_window->hide();
return;
}
if (m_documentation_tooltip_window->is_visible() && hovered_token == m_last_parsed_token) {
return;
}
#ifdef EDITOR_DEBUG
dbg() << "opening " << it->value;
#endif
auto file = CFile::construct(it->value);
if (!file->open(CFile::ReadOnly)) {
dbg() << "failed to open " << it->value << " " << file->error_string();
return;
}
MDDocument man_document;
bool success = man_document.parse(file->read_all());
if (!success) {
dbg() << "failed to parse markdown";
return;
}
auto html_text = man_document.render_to_html();
auto html_document = parse_html_document(html_text);
if (!html_document) {
dbg() << "failed to parse HTML";
return;
}
// FIXME: LibHTML needs a friendlier DOM manipulation API. Something like innerHTML :^)
auto style_element = create_element(*html_document, "style");
style_element->append_child(adopt(*new Text(*html_document, "body { background-color: #dac7b5; }")));
// FIXME: This const_cast should not be necessary.
auto* head_element = const_cast<HTMLHeadElement*>(html_document->head());
ASSERT(head_element);
head_element->append_child(style_element);
m_documentation_html_view->set_document(html_document);
m_documentation_tooltip_window->move_to(screen_location.translated(4, 4));
m_documentation_tooltip_window->show();
m_last_parsed_token = hovered_token;
}
void Editor::mousemove_event(GMouseEvent& event)
{
GTextEditor::mousemove_event(event);
if (document().spans().is_empty())
return;
auto text_position = text_position_at(event.position());
if (!text_position.is_valid()) {
GApplication::the().hide_tooltip();
return;
}
for (auto& span : document().spans()) {
if (span.range.contains(text_position)) {
auto adjusted_range = span.range;
adjusted_range.end().set_column(adjusted_range.end().column() + 1);
auto hovered_span_text = document().text_in_range(adjusted_range);
#ifdef EDITOR_DEBUG
dbg() << "Hovering: " << adjusted_range << " \"" << hovered_span_text << "\"";
#endif
show_documentation_tooltip_if_available(hovered_span_text, event.position().translated(screen_relative_rect().location()));
return;
}
}
GApplication::the().hide_tooltip();
}
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