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ladybird/Userland/Applications/FileManager/DirectoryView.cpp
Andreas Kling 5d180d1f99 Everywhere: Rename ASSERT => VERIFY 
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)

Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.

We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
2021-02-23 20:56:54 +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 "DirectoryView.h"
#include "FileUtils.h"
#include <AK/LexicalPath.h>
#include <AK/NumberFormat.h>
#include <AK/StringBuilder.h>
#include <LibCore/File.h>
#include <LibCore/MimeData.h>
#include <LibCore/StandardPaths.h>
#include <LibGUI/FileIconProvider.h>
#include <LibGUI/InputBox.h>
#include <LibGUI/Label.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/ModelEditingDelegate.h>
#include <LibGUI/SortingProxyModel.h>
#include <serenity.h>
#include <spawn.h>
#include <stdio.h>
#include <unistd.h>
namespace FileManager {
NonnullRefPtr<GUI::Action> LauncherHandler::create_launch_action(Function<void(const LauncherHandler&)> launch_handler)
{
auto icon = GUI::FileIconProvider::icon_for_executable(details().executable).bitmap_for_size(16);
return GUI::Action::create(details().name, move(icon), [this, launch_handler = move(launch_handler)](auto&) {
launch_handler(*this);
});
}
RefPtr<LauncherHandler> DirectoryView::get_default_launch_handler(const NonnullRefPtrVector<LauncherHandler>& handlers)
{
// If this is an application, pick it first
for (size_t i = 0; i < handlers.size(); i++) {
if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::Application)
return handlers[i];
}
// If there's a handler preferred by the user, pick this first
for (size_t i = 0; i < handlers.size(); i++) {
if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::UserPreferred)
return handlers[i];
}
// Otherwise, use the user's default, if available
for (size_t i = 0; i < handlers.size(); i++) {
if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::UserDefault)
return handlers[i];
}
// If still no match, use the first one we find
if (!handlers.is_empty()) {
return handlers[0];
}
return {};
}
NonnullRefPtrVector<LauncherHandler> DirectoryView::get_launch_handlers(const URL& url)
{
NonnullRefPtrVector<LauncherHandler> handlers;
for (auto& h : Desktop::Launcher::get_handlers_with_details_for_url(url)) {
handlers.append(adopt(*new LauncherHandler(h)));
}
return handlers;
}
NonnullRefPtrVector<LauncherHandler> DirectoryView::get_launch_handlers(const String& path)
{
return get_launch_handlers(URL::create_with_file_protocol(path));
}
void DirectoryView::handle_activation(const GUI::ModelIndex& index)
{
if (!index.is_valid())
return;
dbgln("on activation: {},{}, this={:p}, m_model={:p}", index.row(), index.column(), this, m_model.ptr());
auto& node = this->node(index);
auto path = node.full_path();
struct stat st;
if (stat(path.characters(), &st) < 0) {
perror("stat");
return;
}
if (S_ISDIR(st.st_mode)) {
if (is_desktop()) {
Desktop::Launcher::open(URL::create_with_file_protocol(path));
return;
}
open(path);
return;
}
auto url = URL::create_with_file_protocol(path);
auto launcher_handlers = get_launch_handlers(url);
auto default_launcher = get_default_launch_handler(launcher_handlers);
if (default_launcher) {
launch(url, *default_launcher);
} else {
auto error_message = String::formatted("Could not open {}", path);
GUI::MessageBox::show(window(), error_message, "File Manager", GUI::MessageBox::Type::Error);
}
}
DirectoryView::DirectoryView(Mode mode)
: m_mode(mode)
, m_model(GUI::FileSystemModel::create({}))
, m_sorting_model(GUI::SortingProxyModel::create(m_model))
{
set_active_widget(nullptr);
set_content_margins({ 2, 2, 2, 2 });
setup_actions();
m_error_label = add<GUI::Label>();
m_error_label->set_font(m_error_label->font().bold_variant());
setup_model();
setup_icon_view();
if (mode != Mode::Desktop) {
setup_columns_view();
setup_table_view();
}
set_view_mode(ViewMode::Icon);
}
const GUI::FileSystemModel::Node& DirectoryView::node(const GUI::ModelIndex& index) const
{
return model().node(m_sorting_model->map_to_source(index));
}
void DirectoryView::setup_model()
{
m_model->on_error = [this](int, const char* error_string) {
auto failed_path = m_model->root_path();
auto error_message = String::formatted("Could not read {}:\n{}", failed_path, error_string);
m_error_label->set_text(error_message);
set_active_widget(m_error_label);
m_mkdir_action->set_enabled(false);
m_touch_action->set_enabled(false);
add_path_to_history(model().root_path());
if (on_path_change)
on_path_change(failed_path, false);
};
m_model->on_complete = [this] {
if (m_table_view)
m_table_view->selection().clear();
if (m_icon_view)
m_icon_view->selection().clear();
add_path_to_history(model().root_path());
bool can_write_in_path = access(model().root_path().characters(), W_OK) == 0;
m_mkdir_action->set_enabled(can_write_in_path);
m_touch_action->set_enabled(can_write_in_path);
if (on_path_change)
on_path_change(model().root_path(), can_write_in_path);
};
m_model->register_client(*this);
m_model->on_thumbnail_progress = [this](int done, int total) {
if (on_thumbnail_progress)
on_thumbnail_progress(done, total);
};
if (is_desktop())
m_model->set_root_path(Core::StandardPaths::desktop_directory());
}
void DirectoryView::setup_icon_view()
{
m_icon_view = add<GUI::IconView>();
m_icon_view->set_should_hide_unnecessary_scrollbars(true);
m_icon_view->set_selection_mode(GUI::AbstractView::SelectionMode::MultiSelection);
m_icon_view->set_editable(true);
m_icon_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
m_icon_view->aid_create_editing_delegate = [](auto&) {
return make<GUI::StringModelEditingDelegate>();
};
if (is_desktop()) {
m_icon_view->set_frame_shape(Gfx::FrameShape::NoFrame);
m_icon_view->set_scrollbars_enabled(false);
m_icon_view->set_fill_with_background_color(false);
m_icon_view->set_draw_item_text_with_shadow(true);
m_icon_view->set_flow_direction(GUI::IconView::FlowDirection::TopToBottom);
}
m_icon_view->set_model(m_sorting_model);
m_icon_view->set_model_column(GUI::FileSystemModel::Column::Name);
m_icon_view->on_activation = [&](auto& index) {
handle_activation(index);
};
m_icon_view->on_selection_change = [this] {
handle_selection_change();
};
m_icon_view->on_context_menu_request = [this](auto& index, auto& event) {
if (on_context_menu_request)
on_context_menu_request(index, event);
};
m_icon_view->on_drop = [this](auto& index, auto& event) {
handle_drop(index, event);
};
}
void DirectoryView::setup_columns_view()
{
m_columns_view = add<GUI::ColumnsView>();
m_columns_view->set_should_hide_unnecessary_scrollbars(true);
m_columns_view->set_selection_mode(GUI::AbstractView::SelectionMode::MultiSelection);
m_columns_view->set_editable(true);
m_columns_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
m_columns_view->aid_create_editing_delegate = [](auto&) {
return make<GUI::StringModelEditingDelegate>();
};
m_columns_view->set_model(m_sorting_model);
m_columns_view->set_model_column(GUI::FileSystemModel::Column::Name);
m_columns_view->on_activation = [&](auto& index) {
handle_activation(index);
};
m_columns_view->on_selection_change = [this] {
handle_selection_change();
};
m_columns_view->on_context_menu_request = [this](auto& index, auto& event) {
if (on_context_menu_request)
on_context_menu_request(index, event);
};
m_columns_view->on_drop = [this](auto& index, auto& event) {
handle_drop(index, event);
};
}
void DirectoryView::setup_table_view()
{
m_table_view = add<GUI::TableView>();
m_table_view->set_should_hide_unnecessary_scrollbars(true);
m_table_view->set_selection_mode(GUI::AbstractView::SelectionMode::MultiSelection);
m_table_view->set_editable(true);
m_table_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
m_table_view->aid_create_editing_delegate = [](auto&) {
return make<GUI::StringModelEditingDelegate>();
};
m_table_view->set_model(m_sorting_model);
m_table_view->set_key_column_and_sort_order(GUI::FileSystemModel::Column::Name, GUI::SortOrder::Ascending);
m_table_view->on_activation = [&](auto& index) {
handle_activation(index);
};
m_table_view->on_selection_change = [this] {
handle_selection_change();
};
m_table_view->on_context_menu_request = [this](auto& index, auto& event) {
if (on_context_menu_request)
on_context_menu_request(index, event);
};
m_table_view->on_drop = [this](auto& index, auto& event) {
handle_drop(index, event);
};
}
DirectoryView::~DirectoryView()
{
m_model->unregister_client(*this);
}
void DirectoryView::model_did_update(unsigned flags)
{
if (flags & GUI::Model::UpdateFlag::InvalidateAllIndexes) {
for_each_view_implementation([](auto& view) {
view.selection().clear();
});
}
update_statusbar();
}
void DirectoryView::set_view_mode(ViewMode mode)
{
if (m_view_mode == mode)
return;
m_view_mode = mode;
update();
if (mode == ViewMode::Table) {
set_active_widget(m_table_view);
return;
}
if (mode == ViewMode::Columns) {
set_active_widget(m_columns_view);
return;
}
if (mode == ViewMode::Icon) {
set_active_widget(m_icon_view);
return;
}
VERIFY_NOT_REACHED();
}
void DirectoryView::add_path_to_history(const StringView& path)
{
if (m_path_history.size() && m_path_history.at(m_path_history_position) == path)
return;
if (m_path_history_position < m_path_history.size())
m_path_history.resize(m_path_history_position + 1);
m_path_history.append(path);
m_path_history_position = m_path_history.size() - 1;
}
void DirectoryView::open(const StringView& path)
{
auto real_path = Core::File::real_path_for(path);
if (model().root_path() == real_path) {
model().update();
return;
}
set_active_widget(&current_view());
model().set_root_path(real_path);
}
void DirectoryView::set_status_message(const StringView& message)
{
if (on_status_message)
on_status_message(message);
}
void DirectoryView::open_parent_directory()
{
auto path = String::formatted("{}/..", model().root_path());
model().set_root_path(path);
}
void DirectoryView::refresh()
{
model().update();
}
void DirectoryView::open_previous_directory()
{
if (m_path_history_position > 0) {
set_active_widget(&current_view());
m_path_history_position--;
model().set_root_path(m_path_history[m_path_history_position]);
}
}
void DirectoryView::open_next_directory()
{
if (m_path_history_position < m_path_history.size() - 1) {
set_active_widget(&current_view());
m_path_history_position++;
model().set_root_path(m_path_history[m_path_history_position]);
}
}
void DirectoryView::update_statusbar()
{
// If we're triggered during widget construction, just ignore it.
if (m_view_mode == ViewMode::Invalid)
return;
size_t total_size = model().node({}).total_size;
if (current_view().selection().is_empty()) {
set_status_message(String::formatted("{} item(s) ({})",
model().row_count(),
human_readable_size(total_size)));
return;
}
int selected_item_count = current_view().selection().size();
size_t selected_byte_count = 0;
current_view().selection().for_each_index([&](auto& index) {
auto& model = *current_view().model();
auto size_index = model.index(index.row(), GUI::FileSystemModel::Column::Size, model.parent_index(index));
auto file_size = size_index.data().to_i32();
selected_byte_count += file_size;
});
StringBuilder builder;
builder.append(String::number(selected_item_count));
builder.append(" item");
if (selected_item_count != 1)
builder.append('s');
builder.append(" selected (");
builder.append(human_readable_size(selected_byte_count).characters());
builder.append(')');
if (selected_item_count == 1) {
auto& node = this->node(current_view().selection().first());
if (!node.symlink_target.is_empty()) {
builder.append(" -> ");
builder.append(node.symlink_target);
}
}
set_status_message(builder.to_string());
}
void DirectoryView::set_should_show_dotfiles(bool show_dotfiles)
{
m_model->set_should_show_dotfiles(show_dotfiles);
}
void DirectoryView::launch(const URL&, const LauncherHandler& launcher_handler)
{
pid_t child;
if (launcher_handler.details().launcher_type == Desktop::Launcher::LauncherType::Application) {
const char* argv[] = { launcher_handler.details().name.characters(), nullptr };
posix_spawn(&child, launcher_handler.details().executable.characters(), nullptr, nullptr, const_cast<char**>(argv), environ);
if (disown(child) < 0)
perror("disown");
} else {
for (auto& path : selected_file_paths()) {
const char* argv[] = { launcher_handler.details().name.characters(), path.characters(), nullptr };
posix_spawn(&child, launcher_handler.details().executable.characters(), nullptr, nullptr, const_cast<char**>(argv), environ);
if (disown(child) < 0)
perror("disown");
}
}
}
Vector<String> DirectoryView::selected_file_paths() const
{
Vector<String> paths;
auto& view = current_view();
auto& model = *view.model();
view.selection().for_each_index([&](const GUI::ModelIndex& index) {
auto parent_index = model.parent_index(index);
auto name_index = model.index(index.row(), GUI::FileSystemModel::Column::Name, parent_index);
auto path = name_index.data(GUI::ModelRole::Custom).to_string();
paths.append(path);
});
return paths;
}
void DirectoryView::do_delete(bool should_confirm)
{
auto paths = selected_file_paths();
VERIFY(!paths.is_empty());
FileUtils::delete_paths(paths, should_confirm, window());
}
void DirectoryView::handle_selection_change()
{
update_statusbar();
bool can_delete = !current_view().selection().is_empty() && access(path().characters(), W_OK) == 0;
m_delete_action->set_enabled(can_delete);
m_force_delete_action->set_enabled(can_delete);
if (on_selection_change)
on_selection_change(current_view());
}
void DirectoryView::setup_actions()
{
m_mkdir_action = GUI::Action::create("New directory...", { Mod_Ctrl | Mod_Shift, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/mkdir.png"), [&](const GUI::Action&) {
String value;
if (GUI::InputBox::show(window(), value, "Enter name:", "New directory") == GUI::InputBox::ExecOK && !value.is_empty()) {
auto new_dir_path = LexicalPath::canonicalized_path(String::formatted("{}/{}", path(), value));
int rc = mkdir(new_dir_path.characters(), 0777);
if (rc < 0) {
auto saved_errno = errno;
GUI::MessageBox::show(window(), String::formatted("mkdir(\"{}\") failed: {}", new_dir_path, strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
}
}
});
m_touch_action = GUI::Action::create("New file...", { Mod_Ctrl | Mod_Shift, Key_F }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [&](const GUI::Action&) {
String value;
if (GUI::InputBox::show(window(), value, "Enter name:", "New file") == GUI::InputBox::ExecOK && !value.is_empty()) {
auto new_file_path = LexicalPath::canonicalized_path(String::formatted("{}/{}", path(), value));
struct stat st;
int rc = stat(new_file_path.characters(), &st);
if ((rc < 0 && errno != ENOENT)) {
auto saved_errno = errno;
GUI::MessageBox::show(window(), String::formatted("stat(\"{}\") failed: {}", new_file_path, strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
return;
}
if (rc == 0) {
GUI::MessageBox::show(window(), String::formatted("{}: Already exists", new_file_path), "Error", GUI::MessageBox::Type::Error);
return;
}
int fd = creat(new_file_path.characters(), 0666);
if (fd < 0) {
auto saved_errno = errno;
GUI::MessageBox::show(window(), String::formatted("creat(\"{}\") failed: {}", new_file_path, strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
return;
}
rc = close(fd);
VERIFY(rc >= 0);
}
});
m_open_terminal_action = GUI::Action::create("Open Terminal here", Gfx::Bitmap::load_from_file("/res/icons/16x16/app-terminal.png"), [&](auto&) {
posix_spawn_file_actions_t spawn_actions;
posix_spawn_file_actions_init(&spawn_actions);
posix_spawn_file_actions_addchdir(&spawn_actions, path().characters());
pid_t pid;
const char* argv[] = { "Terminal", nullptr };
if ((errno = posix_spawn(&pid, "/bin/Terminal", &spawn_actions, nullptr, const_cast<char**>(argv), environ))) {
perror("posix_spawn");
} else {
if (disown(pid) < 0)
perror("disown");
}
posix_spawn_file_actions_destroy(&spawn_actions);
});
m_delete_action = GUI::CommonActions::make_delete_action([this](auto&) { do_delete(true); }, window());
m_force_delete_action = GUI::Action::create(
"Delete without confirmation", { Mod_Shift, Key_Delete },
[this](auto&) { do_delete(false); },
window());
}
void DirectoryView::handle_drop(const GUI::ModelIndex& index, const GUI::DropEvent& event)
{
if (!event.mime_data().has_urls())
return;
auto urls = event.mime_data().urls();
if (urls.is_empty()) {
dbgln("No files to drop");
return;
}
auto& target_node = node(index);
if (!target_node.is_directory())
return;
bool had_accepted_drop = false;
for (auto& url_to_copy : urls) {
if (!url_to_copy.is_valid() || url_to_copy.path() == target_node.full_path())
continue;
auto new_path = String::formatted("{}/{}", target_node.full_path(), LexicalPath(url_to_copy.path()).basename());
if (url_to_copy.path() == new_path)
continue;
if (auto result = Core::File::copy_file_or_directory(new_path, url_to_copy.path()); result.is_error()) {
auto error_message = String::formatted("Could not copy {} into {}: {}", url_to_copy.to_string(), new_path, result.error().error_code);
GUI::MessageBox::show(window(), error_message, "File Manager", GUI::MessageBox::Type::Error);
} else {
had_accepted_drop = true;
}
}
if (had_accepted_drop && on_accepted_drop)
on_accepted_drop();
}
}
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