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Code Issues Projects Releases Packages Wiki Activity Actions 10
ladybird/Applications/TextEditor/TextEditorWidget.cpp
Andreas Kling 705cee528a LibGUI: Make it easier to create checkable GUI::Actions 
This patch adds GUI::Action::create_checkable() helpers that work just
like the existing create() helpers, but the actions become checkable(!)

Clients are no longer required to manage the checked state of their
actions manually, but instead they will be checked/unchecked as needed
by GUI::Action itself before the activation hook is fired.
2020-04-21 17:21:28 +02:00

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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/Optional.h>
#include <AK/StringBuilder.h>
#include <AK/URL.h>
#include <LibCore/File.h>
#include <LibCore/MimeData.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/FontDatabase.h>
#include <LibGUI/JSSyntaxHighlighter.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MenuBar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/StatusBar.h>
#include <LibGUI/TextBox.h>
#include <LibGUI/TextEditor.h>
#include <LibGUI/ToolBar.h>
#include <LibGfx/Font.h>
#include <string.h>
TextEditorWidget::TextEditorWidget()
{
set_layout<GUI::VerticalBoxLayout>();
layout()->set_spacing(0);
auto& toolbar = add<GUI::ToolBar>();
m_editor = add<GUI::TextEditor>();
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] {
// Do not mark as diry 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_find_replace_widget = add<GUI::Widget>();
m_find_replace_widget->set_fill_with_background_color(true);
m_find_replace_widget->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
m_find_replace_widget->set_preferred_size(0, 48);
m_find_replace_widget->set_layout<GUI::VerticalBoxLayout>();
m_find_replace_widget->layout()->set_margins({ 2, 2, 2, 4 });
m_find_replace_widget->set_visible(false);
m_find_widget = m_find_replace_widget->add<GUI::Widget>();
m_find_widget->set_fill_with_background_color(true);
m_find_widget->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
m_find_widget->set_preferred_size(0, 22);
m_find_widget->set_layout<GUI::HorizontalBoxLayout>();
m_find_widget->set_visible(false);
m_replace_widget = m_find_replace_widget->add<GUI::Widget>();
m_replace_widget->set_fill_with_background_color(true);
m_replace_widget->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
m_replace_widget->set_preferred_size(0, 22);
m_replace_widget->set_layout<GUI::HorizontalBoxLayout>();
m_replace_widget->set_visible(false);
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()) {
dbg() << "find_next(\"\")";
return;
}
auto found_range = m_editor->document().find_next(needle, m_editor->normalized_selection().end());
dbg() << "find_next(\"" << needle << "\") returned " << found_range;
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
} else {
GUI::MessageBox::show(
String::format("Not found: \"%s\"", needle.characters()),
"Not found",
GUI::MessageBox::Type::Information,
GUI::MessageBox::InputType::OK, window());
}
});
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()) {
dbg() << "find_prev(\"\")";
return;
}
auto selection_start = m_editor->normalized_selection().start();
if (!selection_start.is_valid())
selection_start = m_editor->normalized_selection().end();
auto found_range = m_editor->document().find_previous(needle, selection_start);
dbg() << "find_prev(\"" << needle << "\") returned " << found_range;
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
} else {
GUI::MessageBox::show(
String::format("Not found: \"%s\"", needle.characters()),
"Not found",
GUI::MessageBox::Type::Information,
GUI::MessageBox::InputType::OK, window());
}
});
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();
auto found_range = m_editor->document().find_next(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(
String::format("Not found: \"%s\"", needle.characters()),
"Not found",
GUI::MessageBox::Type::Information,
GUI::MessageBox::InputType::OK, window());
}
});
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();
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(
String::format("Not found: \"%s\"", needle.characters()),
"Not found",
GUI::MessageBox::Type::Information,
GUI::MessageBox::InputType::OK, window());
}
});
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;
auto found_range = m_editor->document().find_next(needle);
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);
}
});
m_find_previous_button = m_find_widget->add<GUI::Button>("Find previous");
m_find_previous_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
m_find_previous_button->set_preferred_size(150, 0);
m_find_previous_button->set_action(*m_find_previous_action);
m_find_next_button = m_find_widget->add<GUI::Button>("Find next");
m_find_next_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
m_find_next_button->set_preferred_size(150, 0);
m_find_next_button->set_action(*m_find_next_action);
m_find_textbox->on_return_pressed = [this] {
m_find_next_button->click();
};
m_find_textbox->on_escape_pressed = [this] {
m_find_replace_widget->set_visible(false);
m_editor->set_focus(true);
};
m_replace_previous_button = m_replace_widget->add<GUI::Button>("Replace previous");
m_replace_previous_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
m_replace_previous_button->set_preferred_size(100, 0);
m_replace_previous_button->set_action(*m_replace_previous_action);
m_replace_next_button = m_replace_widget->add<GUI::Button>("Replace next");
m_replace_next_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
m_replace_next_button->set_preferred_size(100, 0);
m_replace_next_button->set_action(*m_replace_next_action);
m_replace_all_button = m_replace_widget->add<GUI::Button>("Replace all");
m_replace_all_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
m_replace_all_button->set_preferred_size(100, 0);
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 = add<GUI::StatusBar>();
m_editor->on_cursor_change = [this] {
StringBuilder builder;
builder.appendf("Line: %d, Column: %d", m_editor->cursor().line() + 1, m_editor->cursor().column());
m_statusbar->set_text(builder.to_string());
};
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("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(FileSystemPath());
update_title();
});
m_open_action = GUI::CommonActions::make_open_action([this](auto&) {
Optional<String> open_path = GUI::FilePicker::get_open_filepath();
if (!open_path.has_value())
return;
if (m_document_dirty) {
auto save_document_first_result = GUI::MessageBox::show("Save Document First?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel, window());
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::Action::create("Save as...", { Mod_Ctrl | Mod_Shift, Key_S }, Gfx::Bitmap::load_from_file("/res/icons/16x16/save.png"), [this](const GUI::Action&) {
Optional<String> save_path = GUI::FilePicker::get_save_filepath(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("Unable to save file.\n", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
return;
}
m_document_dirty = false;
set_path(FileSystemPath(save_path.value()));
dbg() << "Wrote document to " << save_path.value();
});
m_save_action = GUI::Action::create("Save", { Mod_Ctrl, Key_S }, Gfx::Bitmap::load_from_file("/res/icons/16x16/save.png"), [&](const GUI::Action&) {
if (!m_path.is_empty()) {
if (!m_editor->write_to_file(m_path)) {
GUI::MessageBox::show("Unable to save file.\n", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
} 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(0);
}));
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_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);
auto& font_menu = menubar->add_menu("Font");
GUI::FontDatabase::the().for_each_fixed_width_font([&](const StringView& font_name) {
font_menu.add_action(GUI::Action::create(font_name, [this](const GUI::Action& action) {
m_editor->set_font(GUI::FontDatabase::the().get_by_name(action.text()));
m_editor->update();
}));
});
syntax_actions = GUI::ActionGroup {};
syntax_actions.set_exclusive(true);
auto& syntax_menu = menubar->add_menu("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);
auto& view_menu = menubar->add_menu("View");
view_menu.add_action(*m_line_wrapping_setting_action);
view_menu.add_separator();
view_menu.add_submenu(move(font_menu));
view_menu.add_submenu(move(syntax_menu));
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-texteditor.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 FileSystemPath& file)
{
m_path = file.string();
m_name = file.title();
m_extension = file.extension();
if (m_extension == "cpp" || m_extension == "h")
m_cpp_highlight->activate();
else if (m_extension == "js")
m_js_highlight->activate();
else
m_plain_text_highlight->activate();
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)) {
GUI::MessageBox::show(String::format("Opening \"%s\" failed: %s", path.characters(), strerror(errno)), "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
return;
}
m_editor->set_text(file->read_all());
m_document_dirty = false;
m_document_opening = true;
set_path(FileSystemPath(path));
m_editor->set_focus(true);
}
bool TextEditorWidget::request_close()
{
if (!m_document_dirty)
return true;
auto result = GUI::MessageBox::show("The document has been modified. Would you like to save?", "Unsaved changes", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel, window());
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("TextEditor can only open one file at a time!", "One at a time please!", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
return;
}
open_sesame(urls.first().path());
}
}
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