provide generic interface for dealing with selected items

src/Makefile.am

@@ -1,7 +1,7 @@
 bin_PROGRAMS = ncmpcpp
 ncmpcpp_SOURCES = browser.cpp charset.cpp clock.cpp display.cpp help.cpp \
-	helpers.cpp info.cpp libmpdclient.c lyrics.cpp media_library.cpp misc.cpp mpdpp.cpp \
-	ncmpcpp.cpp playlist.cpp playlist_editor.cpp screen.cpp scrollpad.cpp \
+	helpers.cpp info.cpp libmpdclient.c lyrics.cpp media_library.cpp menu.cpp misc.cpp \
+	mpdpp.cpp ncmpcpp.cpp playlist.cpp playlist_editor.cpp scrollpad.cpp \
 	search_engine.cpp settings.cpp song.cpp status.cpp str_pool.c tag_editor.cpp window.cpp
 
 # set the include path found by configure

src/browser.cpp

@@ -146,7 +146,7 @@ void Browser::SpacePressed()
 {
 	if (Config.space_selects && w->Choice() >= (itsBrowsedDir != "/" ? 1 : 0))
 	{
-		Select(w);
+		w->SelectCurrent();
 		w->Scroll(wDown);
 		return;
 	}
@@ -238,6 +238,39 @@ MPD::Song *Browser::CurrentSong()
 	return !w->Empty() && w->Current().type == itSong ? w->Current().song : 0;
 }
 
+void Browser::ReverseSelection()
+{
+	w->ReverseSelection(itsBrowsedDir == "/" ? 0 : 1);
+}
+
+void Browser::GetSelectedSongs(MPD::SongList &v)
+{
+	std::vector<size_t> selected;
+	w->GetSelected(selected);
+	for (std::vector<size_t>::const_iterator it = selected.begin(); it != selected.end(); it++)
+	{
+		const Item &item = w->at(*it);
+		switch (item.type)
+		{
+			case itDirectory:
+			{
+				Mpd->GetDirectoryRecursive(locale_to_utf_cpy(item.name), v);
+				break;
+			}
+			case itSong:
+			{
+				v.push_back(new Song(*item.song));
+				break;
+			}
+			case itPlaylist:
+			{
+				Mpd->GetPlaylistContent(locale_to_utf_cpy(item.name), v);
+				break;
+			}
+		}
+	}
+}
+
 namespace
 {
 	const char *supported_extensions[] = { "wma", "asf", "rm", "mp1", "mp2", "mp3", "mp4", "m4a", "flac", "ogg", "wav", "au", "aiff", "aif", "ac3", "aac", "mpc", "it", "mod", "s3m", "xm", "wv", 0 };

src/browser.h

@@ -40,6 +40,11 @@ class Browser : public Screen< Menu<MPD::Item> >
 		
 		virtual MPD::Song *CurrentSong();
 		
+		virtual bool allowsSelection() { return true; }
+		virtual void ReverseSelection();
+		virtual bool Deselect() { return w->Deselect(); }
+		virtual void GetSelectedSongs(MPD::SongList &);
+		
 		const std::string &CurrentDir() { return itsBrowsedDir; }
 		
 		void GetDirectory(std::string, std::string = "/");

src/clock.h

@@ -42,6 +42,8 @@ class Clock : public Screen<Window>
 		virtual void Update();
 		virtual void Scroll() { }
 		
+		virtual bool allowsSelection() { return false; }
+		
 	protected:
 		static void Prepare();
 		static void Set(int, int);

src/help.h

@@ -33,6 +33,8 @@ class Help : public Screen<Scrollpad>
 		
 		virtual std::string Title();
 		
+		virtual bool allowsSelection() { return false; }
+		
 	protected:
 		std::string DisplayKeys(int *, int = 2);
 		void GetKeybindings();

src/info.h

@@ -36,6 +36,8 @@ class Info : public Screen<Scrollpad>
 		
 		virtual void Update();
 		
+		virtual bool allowsSelection() { return false; }
+		
 		void GetSong();
 #		ifdef HAVE_CURL_CURL_H
 		void GetArtist();

src/lyrics.h

@@ -54,6 +54,8 @@ class Lyrics : public Screen<Scrollpad>
 		
 		virtual void SpacePressed();
 		
+		virtual bool allowsSelection() { return false; }
+		
 		static bool Reload;
 		
 #		ifdef HAVE_CURL_CURL_H

src/media_library.cpp

@@ -246,7 +246,7 @@ void MediaLibrary::SpacePressed()
 {
 	if (Config.space_selects && w == Songs)
 	{
-		Select(Songs);
+		Songs->SelectCurrent();
 		w->Scroll(wDown);
 		return;
 	}
@@ -258,6 +258,16 @@ MPD::Song *MediaLibrary::CurrentSong()
 	return w == Songs && !Songs->Empty() ? &Songs->Current() : 0;
 }
 
+void MediaLibrary::GetSelectedSongs(MPD::SongList &v)
+{
+	std::vector<size_t> selected;
+	Songs->GetSelected(selected);
+	for (std::vector<size_t>::const_iterator it = selected.begin(); it != selected.end(); it++)
+	{
+		v.push_back(new MPD::Song(Songs->at(*it)));
+	}
+}
+
 void MediaLibrary::NextColumn()
 {
 	CLEAR_FIND_HISTORY;

src/media_library.h

@@ -41,6 +41,11 @@ class MediaLibrary : public Screen<Window>
 		
 		virtual MPD::Song *CurrentSong();
 		
+		virtual bool allowsSelection() { return w == Songs; }
+		virtual void ReverseSelection() { Songs->ReverseSelection(); }
+		virtual bool Deselect() { return Songs->Deselect(); }
+		virtual void GetSelectedSongs(MPD::SongList &);
+		
 		void NextColumn();
 		void PrevColumn();
 		

src/menu.cpp

@@ -18,13 +18,28 @@
  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  ***************************************************************************/
 
-#include "screen.h"
+#include "menu.h"
 
-void BasicScreen::Select(List *l)
+void List::SelectCurrent()
 {
-	if (l->Empty())
+	if (Empty())
 		return;
-	size_t i = l->Choice();
-	l->Select(i, !l->isSelected(i));
+	size_t i = Choice();
+	Select(i, !isSelected(i));
+}
+
+void List::ReverseSelection(size_t beginning)
+{
+	for (size_t i = beginning; i < Size(); i++)
+		Select(i, !isSelected(i) && !isStatic(i));
+}
+
+bool List::Deselect()
+{
+	if (!hasSelected())
+		return false;
+	for (size_t i = 0; i < Size(); i++)
+		Select(i, 0);
+	return true;
 }
 

src/menu.h

@@ -31,7 +31,8 @@ class List
 		class InvalidItem { };
 		
 		List() { }
-		virtual ~List() { };
+		virtual ~List() { }
+		
 		virtual void Select(int, bool) = 0;
 		virtual void Static(int, bool) = 0;
 		virtual bool Empty() const = 0;
@@ -43,6 +44,10 @@ class List
 		virtual size_t Size() const = 0;
 		virtual size_t Choice() const = 0;
 		virtual size_t RealChoice() const = 0;
+		
+		void SelectCurrent();
+		void ReverseSelection(size_t = 0);
+		bool Deselect();
 };
 
 template <class T> class Menu : public Window, public List

src/ncmpcpp.cpp

@@ -1184,114 +1184,36 @@ int main(int argc, char *argv[])
 		}
 		else if (Keypressed(input, Key.ReverseSelection))
 		{
-			if (myScreen == myPlaylist
-			||  myScreen == myBrowser
-			||  (myScreen == mySearcher && !mySearcher->Main()->Current().first)
-			||  myScreen->Cmp() == myLibrary->Songs
-			||  myScreen->Cmp() == myPlaylistEditor->Content
-#			ifdef HAVE_TAGLIB_H
-			||  myScreen->Cmp() == myTagEditor->Tags
-#			endif // HAVE_TAGLIB_H
-			   )
+			if (myScreen->allowsSelection())
 			{
-				List *mList = reinterpret_cast<Menu<Song> *>(myWindow->Main());
-				for (size_t i = 0; i < mList->Size(); i++)
-					mList->Select(i, !mList->isSelected(i) && !mList->isStatic(i));
-				// hackish shit begins
-				if (myScreen == myBrowser && myBrowser->CurrentDir() != "/")
-					mList->Select(0, 0); // [..] cannot be selected, uhm.
-				if (myScreen == mySearcher)
-					mList->Select(SearchEngine::ResetButton, 0); // 'Reset' cannot be selected, omgplz.
-				// hacking shit ends.
+				myScreen->ReverseSelection();
 				ShowMessage("Selection reversed!");
 			}
 		}
 		else if (Keypressed(input, Key.DeselectAll))
 		{
-			if (myScreen == myPlaylist
-			||  myScreen == myBrowser
-			||  myScreen == mySearcher
-			||  myScreen->Cmp() == myLibrary->Songs
-			||  myScreen->Cmp() == myPlaylistEditor->Content
-#			ifdef HAVE_TAGLIB_H
-			||  myScreen->Cmp() == myTagEditor->Tags
-#			endif // HAVE_TAGLIB_H
-			   )
+			if (myScreen->allowsSelection())
 			{
-				List *mList = reinterpret_cast<Menu<Song> *>(myWindow->Main());
-				if (mList->hasSelected())
+				if (myScreen->Deselect())
 				{
-					for (size_t i = 0; i < mList->Size(); i++)
-						mList->Select(i, 0);
 					ShowMessage("Items deselected!");
 				}
 			}
 		}
 		else if (Keypressed(input, Key.AddSelected))
 		{
-			if (myScreen != myPlaylist
-			&&  myScreen != myBrowser
-			&&  myScreen != mySearcher
-			&&  myScreen->Cmp() != myLibrary->Songs
-			&&  myScreen->Cmp() != myPlaylistEditor->Content)
+			if (!myScreen->allowsSelection())
 				continue;
 			
-			List *mList = reinterpret_cast<Menu<Song> *>(myWindow->Main());
-			if (!mList->hasSelected())
+			SongList result;
+			myScreen->GetSelectedSongs(result);
+			
+			if (result.empty())
 			{
 				ShowMessage("No selected items!");
 				continue;
 			}
 			
-			vector<size_t> list;
-			mList->GetSelected(list);
-			SongList result;
-			for (vector<size_t>::const_iterator it = list.begin(); it != list.end(); it++)
-			{
-				if (myScreen == myPlaylist)
-				{
-					Song *s = new Song(myPlaylist->Main()->at(*it));
-					result.push_back(s);
-				}
-				else if (myScreen == myBrowser)
-				{
-					const Item &item = myBrowser->Main()->at(*it);
-					switch (item.type)
-					{
-						case itDirectory:
-						{
-							Mpd->GetDirectoryRecursive(locale_to_utf_cpy(item.name), result);
-							break;
-						}
-						case itSong:
-						{
-							Song *s = new Song(*item.song);
-							result.push_back(s);
-							break;
-						}
-						case itPlaylist:
-						{
-							Mpd->GetPlaylistContent(locale_to_utf_cpy(item.name), result);
-							break;
-						}
-					}
-				}
-				else if (myScreen == mySearcher)
-				{
-					Song *s = new Song(*mySearcher->Main()->at(*it).second);
-					result.push_back(s);
-				}
-				else if (myScreen == myLibrary)
-				{
-					Song *s = new Song(myLibrary->Songs->at(*it));
-					result.push_back(s);
-				}
-				else if (myScreen == myPlaylistEditor)
-				{
-					Song *s = new Song(myPlaylistEditor->Content->at(*it));
-					result.push_back(s);
-				}
-			}
 			size_t dialog_width = COLS*0.8;
 			size_t dialog_height = LINES*0.6;
 			Menu<string> *mDialog = new Menu<string>((COLS-dialog_width)/2, (LINES-dialog_height)/2, dialog_width, dialog_height, "Add selected items to...", Config.main_color, Config.window_border);

src/playlist.cpp

@@ -81,7 +81,7 @@ void Playlist::EnterPressed()
 
 void Playlist::SpacePressed()
 {
-	Select(w);
+	w->SelectCurrent();
 	w->Scroll(wDown);
 }
 
@@ -90,6 +90,16 @@ MPD::Song *Playlist::CurrentSong()
 	return !w->Empty() ? &w->Current() : 0;
 }
 
+void Playlist::GetSelectedSongs(MPD::SongList &v)
+{
+	vector<size_t> selected;
+	w->GetSelected(selected);
+	for (vector<size_t>::const_iterator it = selected.begin(); it != selected.end(); it++)
+	{
+		v.push_back(new MPD::Song(w->at(*it)));
+	}
+}
+
 std::string Playlist::TotalLength()
 {
 	std::ostringstream result;

src/playlist.h

@@ -42,6 +42,11 @@ class Playlist : public Screen< Menu<MPD::Song> >
 		
 		virtual MPD::Song *CurrentSong();
 		
+		virtual bool allowsSelection() { return true; }
+		virtual void ReverseSelection() { w->ReverseSelection(); }
+		virtual bool Deselect() { return w->Deselect(); }
+		virtual void GetSelectedSongs(MPD::SongList &);
+		
 		bool isPlaying() { return NowPlaying >= 0 && !w->Empty(); }
 		const MPD::Song &NowPlayingSong();
 		

src/playlist_editor.cpp

@@ -266,7 +266,7 @@ void PlaylistEditor::SpacePressed()
 {
 	if (Config.space_selects && w == Content)
 	{
-		Select(Content);
+		Content->SelectCurrent();
 		w->Scroll(wDown);
 		return;
 	}
@@ -278,3 +278,13 @@ MPD::Song *PlaylistEditor::CurrentSong()
 	return w == Content && !Content->Empty() ? &Content->Current() : 0;
 }
 
+void PlaylistEditor::GetSelectedSongs(MPD::SongList &v)
+{
+	std::vector<size_t> selected;
+	Content->GetSelected(selected);
+	for (std::vector<size_t>::const_iterator it = selected.begin(); it != selected.end(); it++)
+	{
+		v.push_back(new MPD::Song(Content->at(*it)));
+	}
+}
+

src/playlist_editor.h

@@ -40,6 +40,11 @@ class PlaylistEditor : public Screen<Window>
 		
 		virtual MPD::Song *CurrentSong();
 		
+		virtual bool allowsSelection() { return w == Content; }
+		virtual void ReverseSelection() { Content->ReverseSelection(); }
+		virtual bool Deselect() { return Content->Deselect(); }
+		virtual void GetSelectedSongs(MPD::SongList &);
+		
 		void NextColumn();
 		void PrevColumn();
 		

src/screen.h

@@ -50,10 +50,12 @@ class BasicScreen
 		
 		virtual MPD::Song *CurrentSong() { return 0; }
 		
-		bool hasToBeResized;
+		virtual bool allowsSelection() = 0;
+		virtual void ReverseSelection() { }
+		virtual bool Deselect() { return false; }
+		virtual void GetSelectedSongs(MPD::SongList &) { }
 		
-	protected:
-		void Select(List *);
+		bool hasToBeResized;
 };
 
 template <class WindowType> class Screen : public BasicScreen
@@ -78,7 +80,6 @@ template <class WindowType> void *&Screen<WindowType>::Cmp()
 	return *(void **)(void *)&w;
 }
 
-
 template <class WindowType> WindowType *&Screen<WindowType>::Main()
 {
 	return w;

src/search_engine.cpp

@@ -254,7 +254,7 @@ void SearchEngine::SpacePressed()
 	
 	if (Config.space_selects)
 	{
-		Select(w);
+		w->SelectCurrent();
 		w->Scroll(wDown);
 		return;
 	}
@@ -293,6 +293,16 @@ MPD::Song *SearchEngine::CurrentSong()
 	return !w->Empty() ? w->Current().second : 0;
 }
 
+void SearchEngine::GetSelectedSongs(MPD::SongList &v)
+{
+	std::vector<size_t> selected;
+	w->GetSelected(selected);
+	for (std::vector<size_t>::const_iterator it = selected.begin(); it != selected.end(); it++)
+	{
+		v.push_back(new MPD::Song(*w->at(*it).second));
+	}
+}
+
 void SearchEngine::UpdateFoundList()
 {
 	bool bold = 0;

src/search_engine.h

@@ -51,6 +51,11 @@ class SearchEngine : public Screen< Menu< std::pair<Buffer *, MPD::Song *> > >
 		
 		virtual MPD::Song *CurrentSong();
 		
+		virtual bool allowsSelection() { return w->Choice() >= StaticOptions; }
+		virtual void ReverseSelection() { w->ReverseSelection(StaticOptions); }
+		virtual bool Deselect() { return w->Deselect(); }
+		virtual void GetSelectedSongs(MPD::SongList &);
+		
 		void UpdateFoundList();
 		
 		static size_t StaticOptions;

src/tag_editor.cpp

@@ -704,7 +704,7 @@ void TagEditor::SpacePressed()
 {
 	if (w == Tags)
 	{
-		Select(Tags);
+		Tags->SelectCurrent();
 		w->Scroll(wDown);
 		return;
 	}
@@ -723,6 +723,16 @@ MPD::Song *TagEditor::CurrentSong()
 	return w == Tags && !Tags->Empty() ? &Tags->Current() : 0;
 }
 
+void TagEditor::GetSelectedSongs(MPD::SongList &v)
+{
+	std::vector<size_t> selected;
+	Tags->GetSelected(selected);
+	for (std::vector<size_t>::const_iterator it = selected.begin(); it != selected.end(); it++)
+	{
+		v.push_back(new MPD::Song(Tags->at(*it)));
+	}
+}
+
 void TagEditor::NextColumn()
 {
 	CLEAR_FIND_HISTORY;

src/tag_editor.h

@@ -44,6 +44,8 @@ class TinyTagEditor : public Screen< Menu<Buffer> >
 		
 		virtual void EnterPressed();
 		
+		virtual bool allowsSelection() { return false; }
+		
 		bool SetEdited(MPD::Song *);
 		
 	protected:
@@ -70,6 +72,11 @@ class TagEditor : public Screen<Window>
 		
 		virtual MPD::Song *CurrentSong();
 		
+		virtual bool allowsSelection() { return w == Tags; }
+		virtual void ReverseSelection() { Tags->ReverseSelection(); }
+		virtual bool Deselect() { return Tags->Deselect(); }
+		virtual void GetSelectedSongs(MPD::SongList &);
+		
 		void NextColumn();
 		void PrevColumn();