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ladybird/Userland/Libraries/LibGUI/FilePicker.cpp
Karol Kosek 71185f91a8 LibGUI: Enable/Disable the Open button on text change in FilePicker 
Prior this change, the button was updated on user selection change
in the file view.

This isn't quite right, as you could remove the text from the text box
or (even worse) start typing a filename there and the button state
wouldn't change.
2021-09-12 20:20:18 +02:00

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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Function.h>
#include <AK/LexicalPath.h>
#include <LibCore/File.h>
#include <LibCore/StandardPaths.h>
#include <LibGUI/Action.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/CommonLocationsProvider.h>
#include <LibGUI/FileIconProvider.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/FilePickerDialogGML.h>
#include <LibGUI/FileSystemModel.h>
#include <LibGUI/InputBox.h>
#include <LibGUI/Label.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/MultiView.h>
#include <LibGUI/SortingProxyModel.h>
#include <LibGUI/TextBox.h>
#include <LibGUI/Toolbar.h>
#include <LibGfx/FontDatabase.h>
#include <LibGfx/Palette.h>
#include <string.h>
#include <unistd.h>
namespace GUI {
Optional<String> FilePicker::get_open_filepath(Window* parent_window, const String& window_title, const StringView& path, bool folder, ScreenPosition screen_position)
{
auto picker = FilePicker::construct(parent_window, folder ? Mode::OpenFolder : Mode::Open, "", path, screen_position);
if (!window_title.is_null())
picker->set_title(window_title);
if (picker->exec() == Dialog::ExecOK) {
String file_path = picker->selected_file();
if (file_path.is_null())
return {};
return file_path;
}
return {};
}
Optional<String> FilePicker::get_save_filepath(Window* parent_window, const String& title, const String& extension, const StringView& path, ScreenPosition screen_position)
{
auto picker = FilePicker::construct(parent_window, Mode::Save, String::formatted("{}.{}", title, extension), path, screen_position);
if (picker->exec() == Dialog::ExecOK) {
String file_path = picker->selected_file();
if (file_path.is_null())
return {};
return file_path;
}
return {};
}
FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& filename, const StringView& path, ScreenPosition screen_position)
: Dialog(parent_window, screen_position)
, m_model(FileSystemModel::create(path))
, m_mode(mode)
{
switch (m_mode) {
case Mode::Open:
case Mode::OpenMultiple:
case Mode::OpenFolder:
set_title("Open");
set_icon(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/open.png"));
break;
case Mode::Save:
set_title("Save as");
set_icon(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/save.png"));
break;
}
resize(560, 320);
auto& widget = set_main_widget<GUI::Widget>();
if (!widget.load_from_gml(file_picker_dialog_gml))
VERIFY_NOT_REACHED();
auto& toolbar = *widget.find_descendant_of_type_named<GUI::Toolbar>("toolbar");
toolbar.set_has_frame(false);
m_location_textbox = *widget.find_descendant_of_type_named<GUI::TextBox>("location_textbox");
m_location_textbox->set_text(path);
m_view = *widget.find_descendant_of_type_named<GUI::MultiView>("view");
m_view->set_selection_mode(m_mode == Mode::OpenMultiple ? GUI::AbstractView::SelectionMode::MultiSelection : GUI::AbstractView::SelectionMode::SingleSelection);
m_view->set_model(SortingProxyModel::create(*m_model));
m_view->set_model_column(FileSystemModel::Column::Name);
m_view->set_key_column_and_sort_order(GUI::FileSystemModel::Column::Name, GUI::SortOrder::Ascending);
m_view->set_column_visible(FileSystemModel::Column::User, true);
m_view->set_column_visible(FileSystemModel::Column::Group, true);
m_view->set_column_visible(FileSystemModel::Column::Permissions, true);
m_view->set_column_visible(FileSystemModel::Column::Inode, true);
m_view->set_column_visible(FileSystemModel::Column::SymlinkTarget, true);
m_model->register_client(*this);
m_error_label = m_view->add<GUI::Label>();
m_error_label->set_font(m_error_label->font().bold_variant());
m_location_textbox->on_return_pressed = [this] {
set_path(m_location_textbox->text());
};
auto open_parent_directory_action = Action::create(
"Open parent directory", { Mod_Alt, Key_Up }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/open-parent-directory.png"), [this](const Action&) {
set_path(String::formatted("{}/..", m_model->root_path()));
},
this);
toolbar.add_action(*open_parent_directory_action);
auto go_home_action = CommonActions::make_go_home_action([this](auto&) {
set_path(Core::StandardPaths::home_directory());
},
this);
toolbar.add_action(go_home_action);
toolbar.add_separator();
auto mkdir_action = Action::create(
"New directory...", { Mod_Ctrl | Mod_Shift, Key_N }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/mkdir.png"), [this](const Action&) {
String value;
if (InputBox::show(this, value, "Enter name:", "New directory") == InputBox::ExecOK && !value.is_empty()) {
auto new_dir_path = LexicalPath::canonicalized_path(String::formatted("{}/{}", m_model->root_path(), value));
int rc = mkdir(new_dir_path.characters(), 0777);
if (rc < 0) {
MessageBox::show(this, String::formatted("mkdir(\"{}\") failed: {}", new_dir_path, strerror(errno)), "Error", MessageBox::Type::Error);
} else {
m_model->invalidate();
}
}
},
this);
toolbar.add_action(*mkdir_action);
toolbar.add_separator();
toolbar.add_action(m_view->view_as_icons_action());
toolbar.add_action(m_view->view_as_table_action());
toolbar.add_action(m_view->view_as_columns_action());
m_filename_textbox = *widget.find_descendant_of_type_named<GUI::TextBox>("filename_textbox");
m_filename_textbox->set_focus(true);
if (m_mode == Mode::Save) {
m_filename_textbox->set_text(filename);
m_filename_textbox->select_all();
}
m_filename_textbox->on_return_pressed = [&] {
on_file_return();
};
m_context_menu = GUI::Menu::construct();
m_context_menu->add_action(GUI::Action::create_checkable(
"Show dotfiles", { Mod_Ctrl, Key_H }, [&](auto& action) {
m_model->set_should_show_dotfiles(action.is_checked());
m_model->invalidate();
},
this));
m_view->on_context_menu_request = [&](const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {
if (!index.is_valid()) {
m_context_menu->popup(event.screen_position());
}
};
auto& ok_button = *widget.find_descendant_of_type_named<GUI::Button>("ok_button");
ok_button.set_text(ok_button_name(m_mode));
ok_button.on_click = [this](auto) {
on_file_return();
};
ok_button.set_enabled(!m_filename_textbox->text().is_empty());
auto& cancel_button = *widget.find_descendant_of_type_named<GUI::Button>("cancel_button");
cancel_button.set_text("Cancel");
cancel_button.on_click = [this](auto) {
done(ExecCancel);
};
m_filename_textbox->on_change = [&] {
ok_button.set_enabled(!m_filename_textbox->text().is_empty());
};
m_view->on_selection_change = [this] {
auto index = m_view->selection().first();
auto& filter_model = (SortingProxyModel&)*m_view->model();
auto local_index = filter_model.map_to_source(index);
const FileSystemModel::Node& node = m_model->node(local_index);
auto should_open_folder = m_mode == Mode::OpenFolder;
if (should_open_folder == node.is_directory()) {
m_filename_textbox->set_text(node.name);
} else if (m_mode != Mode::Save) {
m_filename_textbox->clear();
}
};
m_view->on_activation = [this](auto& index) {
auto& filter_model = (SortingProxyModel&)*m_view->model();
auto local_index = filter_model.map_to_source(index);
const FileSystemModel::Node& node = m_model->node(local_index);
auto path = node.full_path();
if (node.is_directory() || node.is_symlink_to_directory()) {
set_path(path);
// NOTE: 'node' is invalid from here on
} else {
on_file_return();
}
};
auto& common_locations_frame = *widget.find_descendant_of_type_named<Frame>("common_locations_frame");
common_locations_frame.set_background_role(Gfx::ColorRole::Tray);
m_model->on_directory_change_error = [&](int, char const* error_string) {
m_error_label->set_text(String::formatted("Could not open {}:\n{}", m_model->root_path(), error_string));
m_view->set_active_widget(m_error_label);
m_view->view_as_icons_action().set_enabled(false);
m_view->view_as_table_action().set_enabled(false);
m_view->view_as_columns_action().set_enabled(false);
};
m_model->on_complete = [&] {
m_view->set_active_widget(&m_view->current_view());
for (auto location_button : m_common_location_buttons)
location_button.button.set_checked(m_model->root_path() == location_button.path);
m_view->view_as_icons_action().set_enabled(true);
m_view->view_as_table_action().set_enabled(true);
m_view->view_as_columns_action().set_enabled(true);
};
for (auto& location : CommonLocationsProvider::common_locations()) {
String path = location.path;
auto& button = common_locations_frame.add<GUI::Button>();
button.set_button_style(Gfx::ButtonStyle::Tray);
button.set_foreground_role(Gfx::ColorRole::TrayText);
button.set_text_alignment(Gfx::TextAlignment::CenterLeft);
button.set_text(location.name);
button.set_icon(FileIconProvider::icon_for_path(path).bitmap_for_size(16));
button.set_fixed_height(22);
button.set_checkable(true);
button.set_exclusive(true);
button.on_click = [this, path](auto) {
set_path(path);
};
m_common_location_buttons.append({ path, button });
}
m_location_textbox->set_icon(FileIconProvider::icon_for_path(path).bitmap_for_size(16));
m_model->on_complete();
}
FilePicker::~FilePicker()
{
m_model->unregister_client(*this);
}
void FilePicker::model_did_update(unsigned)
{
m_location_textbox->set_text(m_model->root_path());
}
void FilePicker::on_file_return()
{
auto path = m_filename_textbox->text();
if (!path.starts_with('/')) {
path = LexicalPath::join(m_model->root_path(), path).string();
}
bool file_exists = Core::File::exists(path);
if (!file_exists && (m_mode == Mode::Open || m_mode == Mode::OpenFolder)) {
MessageBox::show(this, String::formatted("No such file or directory: {}", m_filename_textbox->text()), "File not found", MessageBox::Type::Error, MessageBox::InputType::OK);
return;
}
if (file_exists && m_mode == Mode::Save) {
auto result = MessageBox::show(this, "File already exists. Overwrite?", "Existing File", MessageBox::Type::Warning, MessageBox::InputType::OKCancel);
if (result == MessageBox::ExecCancel)
return;
}
m_selected_file = path;
done(ExecOK);
}
void FilePicker::set_path(const String& path)
{
if (access(path.characters(), R_OK | X_OK) == -1) {
GUI::MessageBox::show(this, String::formatted("Could not open '{}':\n{}", path, strerror(errno)), "Error", GUI::MessageBox::Type::Error);
for (auto location_button : m_common_location_buttons)
location_button.button.set_checked(m_model->root_path() == location_button.path);
return;
}
auto new_path = LexicalPath(path).string();
m_location_textbox->set_icon(FileIconProvider::icon_for_path(new_path).bitmap_for_size(16));
m_model->set_root_path(new_path);
}
}
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