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serenity/Applications/FileManager/DirectoryView.cpp
Andreas Kling f0349323c4 LibGUI: Don't require passing model to FileSystemModel::Node APIs
The Node API was obnoxiously requiring you to pass the model into it
all the time, simply because nodes could not find their way back to
the containing model. This patch adds a back-reference to the model
and simplifies the API.
2020-08-17 22:02:21 +02:00

487 lines
16 KiB
C++

/*
* 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 <AK/LexicalPath.h>
#include <AK/NumberFormat.h>
#include <AK/StringBuilder.h>
#include <LibCore/StandardPaths.h>
#include <LibGUI/InputBox.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/SortingProxyModel.h>
#include <serenity.h>
#include <spawn.h>
#include <stdio.h>
#include <unistd.h>
NonnullRefPtr<GUI::Action> LauncherHandler::create_launch_action(Function<void(const LauncherHandler&)> launch_handler)
{
RefPtr<Gfx::Bitmap> icon;
auto icon_file = details().icons.get("16x16");
if (icon_file.has_value())
icon = Gfx::Bitmap::load_from_file(icon_file.value());
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;
dbgprintf("on activation: %d,%d, this=%p, m_model=%p\n", index.row(), index.column(), this, m_model.ptr());
auto& node = model().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::format("Could not open %s", path.characters());
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();
setup_model();
setup_icon_view();
if (mode != Mode::Desktop) {
setup_columns_view();
setup_table_view();
}
set_view_mode(ViewMode::Icon);
}
void DirectoryView::setup_model()
{
m_model->set_root_path(Core::StandardPaths::desktop_directory());
m_model->on_error = [this](int error, const char* error_string) {
bool quit = false;
if (m_path_history.size())
open(m_path_history.at(m_path_history_position));
else
quit = true;
if (on_error)
on_error(error, error_string, quit);
};
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);
};
}
void DirectoryView::setup_icon_view()
{
m_icon_view = add<GUI::IconView>();
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_model(m_sorting_model);
m_icon_view->set_model_column(GUI::FileSystemModel::Column::Name);
m_icon_view->on_activation = [&](auto& index) {
handle_activation(map_index(index));
};
m_icon_view->on_selection_change = [this] {
update_statusbar();
if (on_selection_change)
on_selection_change(*m_icon_view);
};
m_icon_view->on_context_menu_request = [this](auto& index, auto& event) {
if (on_context_menu_request)
on_context_menu_request(map_index(index), event);
};
m_icon_view->on_drop = [this](auto& index, auto& event) {
if (on_drop)
on_drop(map_index(index), event);
};
}
void DirectoryView::setup_columns_view()
{
m_columns_view = add<GUI::ColumnsView>();
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(map_index(index));
};
m_columns_view->on_selection_change = [this] {
update_statusbar();
if (on_selection_change)
on_selection_change(*m_columns_view);
};
m_columns_view->on_context_menu_request = [this](auto& index, auto& event) {
if (on_context_menu_request)
on_context_menu_request(map_index(index), event);
};
m_columns_view->on_drop = [this](auto& index, auto& event) {
if (on_drop)
on_drop(map_index(index), event);
};
}
void DirectoryView::setup_table_view()
{
m_table_view = add<GUI::TableView>();
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(map_index(index));
};
m_table_view->on_selection_change = [this] {
update_statusbar();
if (on_selection_change)
on_selection_change(*m_table_view);
};
m_table_view->on_context_menu_request = [this](auto& index, auto& event) {
if (on_context_menu_request)
on_context_menu_request(map_index(index), event);
};
m_table_view->on_drop = [this](auto& index, auto& event) {
if (on_drop)
on_drop(map_index(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;
}
ASSERT_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)
{
if (model().root_path() == path) {
model().update();
return;
}
model().set_root_path(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::format("%s/..", model().root_path().characters());
model().set_root_path(path);
}
void DirectoryView::refresh()
{
model().update();
}
void DirectoryView::open_previous_directory()
{
if (m_path_history_position > 0) {
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) {
m_path_history_position++;
model().set_root_path(m_path_history[m_path_history_position]);
}
}
GUI::ModelIndex DirectoryView::map_index(const GUI::ModelIndex& index) const
{
return m_sorting_model->map_to_source(index);
}
void DirectoryView::update_statusbar()
{
size_t total_size = model().node({}).total_size;
if (current_view().selection().is_empty()) {
set_status_message(String::format("%d item%s (%s)",
model().row_count(),
model().row_count() != 1 ? "s" : "",
human_readable_size(total_size).characters()));
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 = model().node(map_index(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::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(value, window(), "Enter name:", "New directory") == GUI::InputBox::ExecOK && !value.is_empty()) {
auto new_dir_path = LexicalPath::canonicalized_path(
String::format("%s/%s",
path().characters(),
value.characters()));
int rc = mkdir(new_dir_path.characters(), 0777);
if (rc < 0) {
auto saved_errno = errno;
GUI::MessageBox::show(window(), String::format("mkdir(\"%s\") failed: %s", new_dir_path.characters(), 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(value, window(), "Enter name:", "New file") == GUI::InputBox::ExecOK && !value.is_empty()) {
auto new_file_path = LexicalPath::canonicalized_path(
String::format("%s/%s",
path().characters(),
value.characters()));
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::format("stat(\"%s\") failed: %s", new_file_path.characters(), strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
return;
}
if (rc == 0) {
GUI::MessageBox::show(window(), String::format("%s: Already exists", new_file_path.characters()), "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::format("creat(\"%s\") failed: %s", new_file_path.characters(), strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
return;
}
rc = close(fd);
ASSERT(rc >= 0);
}
});
}