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serenity/Applications/TextEditor/TextEditorWidget.cpp
Andreas Kling 822dc56ef3 LibGUI: Introduce GML - a simple GUI Markup Language :^) 
This patch replaces the UI-from-JSON mechanism with a more
human-friendly DSL.

The current implementation simply converts the GML into a JSON object
that can be consumed by GUI::Widget::load_from_json(). The parser is
not very helpful if you make a mistake.

The language offers a very simple way to instantiate any registered
Core::Object class by simply saying @ClassName

@GUI::Label {
    text: "Hello friends!"
    tooltip: ":^)"
}

Layouts are Core::Objects and can be assigned to the "layout" property:

@GUI::Widget {
    layout: @GUI::VerticalBoxLayout {
        spacing: 2
        margins: [8, 8, 8, 8]
    }
}

And finally, child objects are simply nested within their parent:

@GUI::Widget {
    layout: @GUI::HorizontalBoxLayout {
    }
    @GUI::Button {
        text: "OK"
    }
    @GUI::Button {
        text: "Cancel"
    }
}

This feels a *lot* more pleasant to write than the JSON we had. The fact
that no new code was being written with the JSON mechanism was pretty
telling, so let's approach this with developer convenience in mind. :^)
2020-12-20 11:59:40 +01:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "TextEditorWidget.h"
#include <AK/JsonObject.h>
#include <AK/JsonValue.h>
#include <AK/Optional.h>
#include <AK/StringBuilder.h>
#include <AK/URL.h>
#include <Applications/TextEditor/MainWindowGML.h>
#include <LibCore/File.h>
#include <LibCore/MimeData.h>
#include <LibDesktop/Launcher.h>
#include <LibGUI/AboutDialog.h>
#include <LibGUI/Action.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/CppSyntaxHighlighter.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/INISyntaxHighlighter.h>
#include <LibGUI/JSSyntaxHighlighter.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MenuBar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/ShellSyntaxHighlighter.h>
#include <LibGUI/Splitter.h>
#include <LibGUI/StatusBar.h>
#include <LibGUI/TextBox.h>
#include <LibGUI/TextEditor.h>
#include <LibGUI/ToolBar.h>
#include <LibGUI/ToolBarContainer.h>
#include <LibGfx/Font.h>
#include <LibGfx/FontDatabase.h>
#include <LibMarkdown/Document.h>
#include <LibWeb/OutOfProcessWebView.h>
#include <string.h>
TextEditorWidget::TextEditorWidget()
{
load_from_gml(main_window_gml);
auto& toolbar = static_cast<GUI::ToolBar&>(*find_descendant_by_name("toolbar"));
m_editor = static_cast<GUI::TextEditor&>(*find_descendant_by_name("editor"));
m_editor->set_ruler_visible(true);
m_editor->set_automatic_indentation_enabled(true);
m_editor->set_line_wrapping_enabled(true);
m_editor->on_change = [this] {
update_preview();
// Do not mark as dirty on the first change (When document is first opened.)
if (m_document_opening) {
m_document_opening = false;
return;
}
bool was_dirty = m_document_dirty;
m_document_dirty = true;
if (!was_dirty)
update_title();
};
m_page_view = static_cast<Web::OutOfProcessWebView&>(*find_descendant_by_name("webview"));
m_page_view->on_link_hover = [this](auto& url) {
if (url.is_valid())
m_statusbar->set_text(url.to_string());
else
update_statusbar_cursor_position();
};
m_page_view->on_link_click = [&](auto& url, auto&, unsigned) {
if (!Desktop::Launcher::open(url)) {
GUI::MessageBox::show(
window(),
String::formatted("The link to '{}' could not be opened.", url),
"Failed to open link",
GUI::MessageBox::Type::Error);
}
};
m_find_replace_widget = *find_descendant_by_name("find_replace_widget");
m_find_widget = *find_descendant_by_name("find_widget");
m_replace_widget = *find_descendant_by_name("replace_widget");
m_find_textbox = m_find_widget->add<GUI::TextBox>();
m_replace_textbox = m_replace_widget->add<GUI::TextBox>();
m_find_next_action = GUI::Action::create("Find next", { Mod_Ctrl, Key_G }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find-next.png"), [&](auto&) {
auto needle = m_find_textbox->text();
if (needle.is_empty()) {
dbgln("find_next(\"\")");
return;
}
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_next(needle, m_editor->normalized_selection().end(), GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
dbg() << "find_next(\"" << needle << "\") returned " << found_range;
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_find_regex_action = GUI::Action::create("Find regex", { Mod_Ctrl, Key_R }, [&](auto&) {
m_find_regex_button->set_checked(!m_find_regex_button->is_checked());
m_find_use_regex = m_find_regex_button->is_checked();
});
m_find_previous_action = GUI::Action::create("Find previous", { Mod_Ctrl | Mod_Shift, Key_G }, [&](auto&) {
auto needle = m_find_textbox->text();
if (needle.is_empty()) {
dbgln("find_prev(\"\")");
return;
}
auto selection_start = m_editor->normalized_selection().start();
if (!selection_start.is_valid())
selection_start = m_editor->normalized_selection().end();
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_previous(needle, selection_start, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
dbgln("find_prev(\"{}\") returned {}", needle, found_range);
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_replace_next_action = GUI::Action::create("Replace next", { Mod_Ctrl, Key_F1 }, [&](auto&) {
auto needle = m_find_textbox->text();
auto substitute = m_replace_textbox->text();
if (needle.is_empty())
return;
auto selection_start = m_editor->normalized_selection().start();
if (!selection_start.is_valid())
selection_start = m_editor->normalized_selection().start();
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_next(needle, selection_start, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
m_editor->insert_at_cursor_or_replace_selection(substitute);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_replace_previous_action = GUI::Action::create("Replace previous", { Mod_Ctrl | Mod_Shift, Key_F1 }, [&](auto&) {
auto needle = m_find_textbox->text();
auto substitute = m_replace_textbox->text();
if (needle.is_empty())
return;
auto selection_start = m_editor->normalized_selection().start();
if (!selection_start.is_valid())
selection_start = m_editor->normalized_selection().start();
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_previous(needle, selection_start);
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
m_editor->insert_at_cursor_or_replace_selection(substitute);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_replace_all_action = GUI::Action::create("Replace all", { Mod_Ctrl, Key_F2 }, [&](auto&) {
auto needle = m_find_textbox->text();
auto substitute = m_replace_textbox->text();
if (needle.is_empty())
return;
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_next(needle, {}, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
while (found_range.is_valid()) {
m_editor->set_selection(found_range);
m_editor->insert_at_cursor_or_replace_selection(substitute);
found_range = m_editor->document().find_next(needle, {}, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
}
});
m_find_previous_button = static_cast<GUI::Button&>(*find_descendant_by_name("find_previous_button"));
m_find_previous_button->set_action(*m_find_previous_action);
m_find_next_button = static_cast<GUI::Button&>(*find_descendant_by_name("find_next_button"));
m_find_next_button->set_action(*m_find_next_action);
m_find_textbox->on_return_pressed = [this] {
m_find_next_button->click();
};
m_find_regex_button = m_find_widget->add<GUI::Button>(".*");
m_find_regex_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
m_find_regex_button->set_preferred_size(20, 0);
m_find_regex_button->set_action(*m_find_regex_action);
m_find_textbox->on_escape_pressed = [this] {
m_find_replace_widget->set_visible(false);
m_editor->set_focus(true);
};
m_replace_previous_button = static_cast<GUI::Button&>(*find_descendant_by_name("replace_previous_button"));
m_replace_previous_button->set_action(*m_replace_previous_action);
m_replace_next_button = static_cast<GUI::Button&>(*find_descendant_by_name("replace_next_button"));
m_replace_next_button->set_action(*m_replace_next_action);
m_replace_all_button = static_cast<GUI::Button&>(*find_descendant_by_name("replace_all_button"));
m_replace_all_button->set_action(*m_replace_all_action);
m_replace_textbox->on_return_pressed = [this] {
m_replace_next_button->click();
};
m_replace_textbox->on_escape_pressed = [this] {
m_find_replace_widget->set_visible(false);
m_editor->set_focus(true);
};
m_find_replace_action = GUI::Action::create("Find/Replace...", { Mod_Ctrl, Key_F }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find.png"), [this](auto&) {
m_find_replace_widget->set_visible(true);
m_find_widget->set_visible(true);
m_replace_widget->set_visible(true);
m_find_textbox->set_focus(true);
if (m_editor->has_selection()) {
auto selected_text = m_editor->document().text_in_range(m_editor->normalized_selection());
m_find_textbox->set_text(selected_text);
}
m_find_textbox->select_all();
});
m_editor->add_custom_context_menu_action(*m_find_replace_action);
m_editor->add_custom_context_menu_action(*m_find_next_action);
m_editor->add_custom_context_menu_action(*m_find_previous_action);
m_statusbar = static_cast<GUI::StatusBar&>(*find_descendant_by_name("statusbar"));
m_editor->on_cursor_change = [this] { update_statusbar_cursor_position(); };
m_new_action = GUI::Action::create("New", { Mod_Ctrl, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [this](const GUI::Action&) {
if (m_document_dirty) {
auto save_document_first_result = GUI::MessageBox::show(window(), "Save Document First?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
if (save_document_first_result == GUI::Dialog::ExecResult::ExecYes)
m_save_action->activate();
if (save_document_first_result == GUI::Dialog::ExecResult::ExecCancel)
return;
}
m_document_dirty = false;
m_editor->set_text(StringView());
set_path(LexicalPath());
update_title();
});
m_open_action = GUI::CommonActions::make_open_action([this](auto&) {
Optional<String> open_path = GUI::FilePicker::get_open_filepath(window());
if (!open_path.has_value())
return;
if (m_document_dirty) {
auto save_document_first_result = GUI::MessageBox::show(window(), "Save Document First?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
if (save_document_first_result == GUI::Dialog::ExecResult::ExecYes)
m_save_action->activate();
if (save_document_first_result == GUI::Dialog::ExecResult::ExecCancel)
return;
}
open_sesame(open_path.value());
});
m_save_as_action = GUI::CommonActions::make_save_as_action([&](auto&) {
Optional<String> save_path = GUI::FilePicker::get_save_filepath(window(), m_name.is_null() ? "Untitled" : m_name, m_extension.is_null() ? "txt" : m_extension);
if (!save_path.has_value())
return;
if (!m_editor->write_to_file(save_path.value())) {
GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
return;
}
m_document_dirty = false;
set_path(LexicalPath(save_path.value()));
dbgln("Wrote document to {}", save_path.value());
});
m_save_action = GUI::CommonActions::make_save_action([&](auto&) {
if (!m_path.is_empty()) {
if (!m_editor->write_to_file(m_path)) {
GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
} else {
m_document_dirty = false;
update_title();
}
return;
}
m_save_as_action->activate();
});
m_line_wrapping_setting_action = GUI::Action::create_checkable("Line wrapping", [&](auto& action) {
m_editor->set_line_wrapping_enabled(action.is_checked());
});
m_line_wrapping_setting_action->set_checked(m_editor->is_line_wrapping_enabled());
auto menubar = GUI::MenuBar::construct();
auto& app_menu = menubar->add_menu("Text Editor");
app_menu.add_action(*m_new_action);
app_menu.add_action(*m_open_action);
app_menu.add_action(*m_save_action);
app_menu.add_action(*m_save_as_action);
app_menu.add_separator();
app_menu.add_action(GUI::CommonActions::make_quit_action([this](auto&) {
if (!request_close())
return;
GUI::Application::the()->quit();
}));
auto& edit_menu = menubar->add_menu("Edit");
edit_menu.add_action(m_editor->undo_action());
edit_menu.add_action(m_editor->redo_action());
edit_menu.add_separator();
edit_menu.add_action(m_editor->cut_action());
edit_menu.add_action(m_editor->copy_action());
edit_menu.add_action(m_editor->paste_action());
edit_menu.add_action(m_editor->delete_action());
edit_menu.add_separator();
edit_menu.add_action(*m_find_replace_action);
edit_menu.add_action(*m_find_next_action);
edit_menu.add_action(*m_find_regex_action);
edit_menu.add_action(*m_find_previous_action);
edit_menu.add_action(*m_replace_next_action);
edit_menu.add_action(*m_replace_previous_action);
edit_menu.add_action(*m_replace_all_action);
m_no_preview_action = GUI::Action::create_checkable(
"No preview", [this](auto&) {
set_preview_mode(PreviewMode::None);
});
m_markdown_preview_action = GUI::Action::create_checkable(
"Markdown preview", [this](auto&) {
set_preview_mode(PreviewMode::Markdown);
},
this);
m_html_preview_action = GUI::Action::create_checkable(
"HTML preview", [this](auto&) {
set_preview_mode(PreviewMode::HTML);
},
this);
m_preview_actions.add_action(*m_no_preview_action);
m_preview_actions.add_action(*m_markdown_preview_action);
m_preview_actions.add_action(*m_html_preview_action);
m_preview_actions.set_exclusive(true);
auto& view_menu = menubar->add_menu("View");
view_menu.add_action(*m_line_wrapping_setting_action);
view_menu.add_separator();
view_menu.add_action(*m_no_preview_action);
view_menu.add_action(*m_markdown_preview_action);
view_menu.add_action(*m_html_preview_action);
view_menu.add_separator();
font_actions.set_exclusive(true);
auto& font_menu = view_menu.add_submenu("Font");
Gfx::FontDatabase::the().for_each_fixed_width_font([&](const Gfx::Font& font) {
auto action = GUI::Action::create_checkable(font.qualified_name(), [&](auto&) {
m_editor->set_font(font);
m_editor->update();
});
if (m_editor->font().qualified_name() == font.qualified_name())
action->set_checked(true);
font_actions.add_action(*action);
font_menu.add_action(*action);
});
syntax_actions.set_exclusive(true);
auto& syntax_menu = view_menu.add_submenu("Syntax");
m_plain_text_highlight = GUI::Action::create_checkable("Plain text", [&](auto&) {
m_editor->set_syntax_highlighter(nullptr);
m_editor->update();
});
m_plain_text_highlight->set_checked(true);
syntax_actions.add_action(*m_plain_text_highlight);
syntax_menu.add_action(*m_plain_text_highlight);
m_cpp_highlight = GUI::Action::create_checkable("C++", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::CppSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_cpp_highlight);
syntax_menu.add_action(*m_cpp_highlight);
m_js_highlight = GUI::Action::create_checkable("JavaScript", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::JSSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_js_highlight);
syntax_menu.add_action(*m_js_highlight);
m_ini_highlight = GUI::Action::create_checkable("INI File", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::IniSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_ini_highlight);
syntax_menu.add_action(*m_ini_highlight);
m_shell_highlight = GUI::Action::create_checkable("Shell File", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::ShellSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_shell_highlight);
syntax_menu.add_action(*m_shell_highlight);
auto& help_menu = menubar->add_menu("Help");
help_menu.add_action(GUI::Action::create("About", [&](auto&) {
GUI::AboutDialog::show("Text Editor", Gfx::Bitmap::load_from_file("/res/icons/32x32/app-text-editor.png"), window());
}));
GUI::Application::the()->set_menubar(move(menubar));
toolbar.add_action(*m_new_action);
toolbar.add_action(*m_open_action);
toolbar.add_action(*m_save_action);
toolbar.add_separator();
toolbar.add_action(m_editor->cut_action());
toolbar.add_action(m_editor->copy_action());
toolbar.add_action(m_editor->paste_action());
toolbar.add_action(m_editor->delete_action());
toolbar.add_separator();
toolbar.add_action(m_editor->undo_action());
toolbar.add_action(m_editor->redo_action());
}
TextEditorWidget::~TextEditorWidget()
{
}
void TextEditorWidget::set_path(const LexicalPath& lexical_path)
{
m_path = lexical_path.string();
m_name = lexical_path.title();
m_extension = lexical_path.extension();
if (m_extension == "c" || m_extension == "cc" || m_extension == "cxx" || m_extension == "cpp" || m_extension == "h") {
m_cpp_highlight->activate();
} else if (m_extension == "js" || m_extension == "json") {
m_js_highlight->activate();
} else if (m_extension == "ini") {
m_ini_highlight->activate();
} else {
m_plain_text_highlight->activate();
}
if (m_auto_detect_preview_mode) {
if (m_extension == "md")
set_preview_mode(PreviewMode::Markdown);
else if (m_extension == "html")
set_preview_mode(PreviewMode::HTML);
else
set_preview_mode(PreviewMode::None);
}
update_title();
}
void TextEditorWidget::update_title()
{
StringBuilder builder;
builder.append(m_path);
if (m_document_dirty)
builder.append(" (*)");
builder.append(" - Text Editor");
window()->set_title(builder.to_string());
}
void TextEditorWidget::open_sesame(const String& path)
{
auto file = Core::File::construct(path);
if (!file->open(Core::IODevice::ReadOnly) && file->error() != ENOENT) {
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: {}", path, strerror(errno)), "Error", GUI::MessageBox::Type::Error);
return;
}
m_editor->set_text(file->read_all());
m_document_dirty = false;
m_document_opening = true;
set_path(LexicalPath(path));
m_editor->set_focus(true);
}
bool TextEditorWidget::request_close()
{
if (!m_document_dirty)
return true;
auto result = GUI::MessageBox::show(window(), "The document has been modified. Would you like to save?", "Unsaved changes", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
if (result == GUI::MessageBox::ExecYes) {
m_save_action->activate();
return true;
}
if (result == GUI::MessageBox::ExecNo)
return true;
return false;
}
void TextEditorWidget::drop_event(GUI::DropEvent& event)
{
event.accept();
window()->move_to_front();
if (event.mime_data().has_urls()) {
auto urls = event.mime_data().urls();
if (urls.is_empty())
return;
if (urls.size() > 1) {
GUI::MessageBox::show(window(), "TextEditor can only open one file at a time!", "One at a time please!", GUI::MessageBox::Type::Error);
return;
}
open_sesame(urls.first().path());
}
}
void TextEditorWidget::set_preview_mode(PreviewMode mode)
{
if (m_preview_mode == mode)
return;
m_preview_mode = mode;
if (m_preview_mode == PreviewMode::HTML) {
m_html_preview_action->set_checked(true);
m_page_view->set_visible(true);
update_html_preview();
} else if (m_preview_mode == PreviewMode::Markdown) {
m_markdown_preview_action->set_checked(true);
m_page_view->set_visible(true);
update_markdown_preview();
} else {
m_no_preview_action->set_checked(true);
m_page_view->set_visible(false);
}
}
void TextEditorWidget::update_preview()
{
switch (m_preview_mode) {
case PreviewMode::Markdown:
update_markdown_preview();
break;
case PreviewMode::HTML:
update_html_preview();
break;
default:
break;
}
}
void TextEditorWidget::update_markdown_preview()
{
auto document = Markdown::Document::parse(m_editor->text());
if (document) {
auto html = document->render_to_html();
auto current_scroll_pos = m_page_view->visible_content_rect();
m_page_view->load_html(html, URL::create_with_file_protocol(m_path));
m_page_view->scroll_into_view(current_scroll_pos, true, true);
}
}
void TextEditorWidget::update_html_preview()
{
auto current_scroll_pos = m_page_view->visible_content_rect();
m_page_view->load_html(m_editor->text(), URL::create_with_file_protocol(m_path));
m_page_view->scroll_into_view(current_scroll_pos, true, true);
}
void TextEditorWidget::update_statusbar_cursor_position()
{
StringBuilder builder;
builder.appendff("Line: {}, Column: {}", m_editor->cursor().line() + 1, m_editor->cursor().column());
m_statusbar->set_text(builder.to_string());
}
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