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/* ncmpc (Ncurses MPD Client)
* (c) 2004-2018 The Music Player Daemon Project
* Project homepage: http://musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "FileBrowserPage.hxx"
#include "PageMeta.hxx"
#include "FileListPage.hxx"
#include "screen_status.hxx"
#include "save_playlist.hxx"
#include "screen.hxx"
#include "config.h"
#include "i18n.h"
#include "charset.hxx"
#include "mpdclient.hxx"
#include "filelist.hxx"
#include "screen_utils.hxx"
#include "screen_client.hxx"
#include "Options.hxx"
#include "util/UriUtil.hxx"
#include <mpd/client.h>
#include <string>
#include <stdlib.h>
#include <string.h>
class FileBrowserPage final : public FileListPage {
std::string current_path;
public:
FileBrowserPage(ScreenManager &_screen, WINDOW *_w,
Size size)
:FileListPage(_screen, _w, size,
options.list_format.c_str()) {}
bool GotoSong(struct mpdclient &c, const struct mpd_song &song);
private:
void Reload(struct mpdclient &c);
/**
* Change to the specified absolute directory.
*/
bool ChangeDirectory(struct mpdclient &c, std::string &&new_path);
/**
* Change to the parent directory of the current directory.
*/
bool ChangeToParent(struct mpdclient &c);
/**
* Change to the directory referred by the specified
* #FileListEntry object.
*/
bool ChangeToEntry(struct mpdclient &c, const FileListEntry &entry);
bool HandleEnter(struct mpdclient &c);
void HandleSave(struct mpdclient &c);
void HandleDelete(struct mpdclient &c);
public:
/* virtual methods from class Page */
void Update(struct mpdclient &c, unsigned events) noexcept override;
bool OnCommand(struct mpdclient &c, Command cmd) override;
const char *GetTitle(char *s, size_t size) const noexcept override;
};
static void
screen_file_load_list(struct mpdclient *c, const char *current_path,
FileList *filelist)
{
auto *connection = c->GetConnection();
if (connection == nullptr)
return;
mpd_send_list_meta(connection, current_path);
filelist->Receive(*connection);
if (c->FinishCommand())
filelist->Sort();
}
void
FileBrowserPage::Reload(struct mpdclient &c)
{
delete filelist;
filelist = new FileList();
if (!current_path.empty())
/* add a dummy entry for ./.. */
filelist->emplace_back(nullptr);
screen_file_load_list(&c, current_path.c_str(), filelist);
lw.SetLength(filelist->size());
SetDirty();
}
bool
FileBrowserPage::ChangeDirectory(struct mpdclient &c, std::string &&new_path)
{
current_path = std::move(new_path);
Reload(c);
screen_browser_sync_highlights(filelist, &c.playlist);
lw.Reset();
return filelist != nullptr;
}
bool
FileBrowserPage::ChangeToParent(struct mpdclient &c)
{
auto parent = GetParentUri(current_path.c_str());
const auto old_path = std::move(current_path);
bool success = ChangeDirectory(c, std::move(parent));
int idx = success
? filelist->FindDirectory(old_path.c_str())
: -1;
if (success && idx >= 0) {
/* set the cursor on the previous working directory */
lw.SetCursor(idx);
lw.Center(idx);
}
return success;
}
/**
* Change to the directory referred by the specified #FileListEntry
* object.
*/
bool
FileBrowserPage::ChangeToEntry(struct mpdclient &c, const FileListEntry &entry)
{
if (entry.entity == nullptr)
return ChangeToParent(c);
else if (mpd_entity_get_type(entry.entity) == MPD_ENTITY_TYPE_DIRECTORY)
return ChangeDirectory(c, mpd_directory_get_path(mpd_entity_get_directory(entry.entity)));
else
return false;
}
bool
FileBrowserPage::GotoSong(struct mpdclient &c, const struct mpd_song &song)
{
const char *uri = mpd_song_get_uri(&song);
if (strstr(uri, "//") != nullptr)
/* an URL? */
return false;
/* determine the song's parent directory and go there */
if (!ChangeDirectory(c, GetParentUri(uri)))
return false;
/* select the specified song */
int i = filelist->FindSong(song);
if (i < 0)
i = 0;
lw.SetCursor(i);
SetDirty();
return true;
}
bool
FileBrowserPage::HandleEnter(struct mpdclient &c)
{
const auto *entry = GetSelectedEntry();
if (entry == nullptr)
return false;
return ChangeToEntry(c, *entry);
}
void
FileBrowserPage::HandleSave(struct mpdclient &c)
{
const char *defaultname = nullptr;
const auto range = lw.GetRange();
if (range.start_index == range.end_index)
return;
for (const unsigned i : range) {
auto &entry = (*filelist)[i];
if (entry.entity) {
struct mpd_entity *entity = entry.entity;
if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
const struct mpd_playlist *playlist =
mpd_entity_get_playlist(entity);
defaultname = mpd_playlist_get_path(playlist);
}
}
}
if(defaultname)
playlist_save(&c, nullptr, Utf8ToLocale(defaultname).c_str());
else
playlist_save(&c, nullptr, nullptr);
}
void
FileBrowserPage::HandleDelete(struct mpdclient &c)
{
auto *connection = c.GetConnection();
if (connection == nullptr)
return;
const auto range = lw.GetRange();
for (const unsigned i : range) {
auto &entry = (*filelist)[i];
if (entry.entity == nullptr)
continue;
const auto *entity = entry.entity;
if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
/* translators: the "delete" command is only possible
for playlists; the user attempted to delete a song
or a directory or something else */
screen_status_message(_("Deleting this item is not possible"));
screen_bell();
continue;
}
const auto *playlist = mpd_entity_get_playlist(entity);
char prompt[256];
snprintf(prompt, sizeof(prompt),
_("Delete playlist %s?"),
Utf8ToLocale(GetUriFilename(mpd_playlist_get_path(playlist))).c_str());
bool confirmed = screen_get_yesno(prompt, false);
if (!confirmed) {
/* translators: a dialog was aborted by the user */
screen_status_message(_("Aborted"));
return;
}
if (!mpd_run_rm(connection, mpd_playlist_get_path(playlist))) {
c.HandleError();
break;
}
c.events |= MPD_IDLE_STORED_PLAYLIST;
/* translators: MPD deleted the playlist, as requested by the
user */
screen_status_message(_("Playlist deleted"));
}
}
static std::unique_ptr<Page>
screen_file_init(ScreenManager &_screen, WINDOW *w, Size size)
{
return std::make_unique<FileBrowserPage>(_screen, w, size);
}
const char *
FileBrowserPage::GetTitle(char *str, size_t size) const noexcept
{
const char *path = nullptr, *prev = nullptr, *slash = current_path.c_str();
/* determine the last 2 parts of the path */
while ((slash = strchr(slash, '/')) != nullptr) {
path = prev;
prev = ++slash;
}
if (path == nullptr)
/* fall back to full path */
path = current_path.c_str();
snprintf(str, size, "%s: %s",
/* translators: caption of the browser screen */
_("Browse"), Utf8ToLocale(path).c_str());
return str;
}
void
FileBrowserPage::Update(struct mpdclient &c, unsigned events) noexcept
{
if (events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
/* the db has changed -> update the filelist */
Reload(c);
}
if (events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
#ifndef NCMPC_MINI
| MPD_IDLE_QUEUE
#endif
)) {
screen_browser_sync_highlights(filelist, &c.playlist);
SetDirty();
}
}
bool
FileBrowserPage::OnCommand(struct mpdclient &c, Command cmd)
{
switch(cmd) {
case Command::PLAY:
if (HandleEnter(c))
return true;
break;
case Command::GO_ROOT_DIRECTORY:
ChangeDirectory(c, {});
return true;
case Command::GO_PARENT_DIRECTORY:
ChangeToParent(c);
return true;
case Command::LOCATE:
/* don't let browser_cmd() evaluate the locate command
- it's a no-op, and by the way, leads to a
segmentation fault in the current implementation */
return false;
case Command::SCREEN_UPDATE:
Reload(c);
screen_browser_sync_highlights(filelist, &c.playlist);
return false;
default:
break;
}
if (FileListPage::OnCommand(c, cmd))
return true;
if (!c.IsConnected())
return false;
switch(cmd) {
case Command::DELETE:
HandleDelete(c);
break;
case Command::SAVE_PLAYLIST:
HandleSave(c);
break;
case Command::DB_UPDATE:
screen_database_update(&c, current_path.c_str());
return true;
default:
break;
}
return false;
}
const PageMeta screen_browse = {
"browse",
N_("Browse"),
Command::SCREEN_FILE,
screen_file_init,
};
bool
screen_file_goto_song(ScreenManager &_screen, struct mpdclient &c,
const struct mpd_song &song)
{
auto pi = _screen.MakePage(screen_browse);
auto &page = (FileBrowserPage &)*pi->second;
if (!page.GotoSong(c, song))
return false;
/* finally, switch to the file screen */
_screen.Switch(screen_browse, c);
return true;
}
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