Salastil/ncmpcpp
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do not attempt to get/select/whatever item from an empty menu

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This commit is contained in:
Andrzej Rybczak
2008-12-28 21:13:04 +01:00
parent 44609c8ccb
commit 2db104f2e1
2 changed files with 13 additions and 7 deletions
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5
src/menu.h
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@@ -38,6 +38,7 @@ class List
virtual ~List() { };
virtual void Select(int, bool) = 0;
virtual void Static(int, bool) = 0;
virtual bool Empty() const = 0;
virtual bool isSelected(int = -1) const = 0;
virtual bool isStatic(int = -1) const = 0;
virtual bool hasSelected() const = 0;
@@ -108,7 +109,7 @@ template <class T> class Menu : public Window, public List
void HighlightColor(Color col) { itsHighlightColor = col; }
void Highlighting(bool hl) { highlightEnabled = hl; }
bool Empty() const { return itsOptions.empty(); }
virtual bool Empty() const { return itsOptions.empty(); }
T &Back();
const T &Back() const;
@@ -311,6 +312,8 @@ template <class T> void Menu<T>::Refresh()
template <class T> void Menu<T>::Scroll(Where where)
{
if (itsOptions.empty())
return;
int MaxHighlight = itsOptions.size()-1;
int MaxBeginning = itsOptions.size() < itsHeight ? 0 : itsOptions.size()-itsHeight;
int MaxCurrentHighlight = itsBeginning+itsHeight-1;

15
src/ncmpcpp.cpp
View File

@@ -487,11 +487,9 @@ int main(int argc, char *argv[])
sort(list.begin(), list.end(), CaseInsensitiveSorting());
for (TagList::iterator it = list.begin(); it != list.end(); it++)
{
if ((mLibArtists->Empty() || mLibArtists->Back() != *it) && !it->empty())
{
if (!it->empty())
mLibArtists->AddOption(*it);
}
}
mLibArtists->Window::Clear();
mLibArtists->Refresh();
}
@@ -953,6 +951,9 @@ int main(int argc, char *argv[])
{
ENTER_BROWSER_SCREEN:
if (mBrowser->Empty())
continue;
const Item &item = mBrowser->Current();
switch (item.type)
{
@@ -1312,7 +1313,7 @@ int main(int argc, char *argv[])
SongList list;
if (wCurrent == mLibArtists)
if (!mLibArtists->Empty() && wCurrent == mLibArtists)
{
const string &tag = mLibArtists->Current();
Mpd->StartSearch(1);
@@ -1421,7 +1422,7 @@ int main(int argc, char *argv[])
SongList list;
if (wCurrent == mPlaylistList)
if (wCurrent == mPlaylistList && !mPlaylistList->Empty())
{
const string &playlist = mPlaylistList->Current();
Mpd->GetPlaylistContent(playlist, list);
@@ -1698,6 +1699,8 @@ int main(int argc, char *argv[])
if (wCurrent == mPlaylist || wCurrent == mEditorTags || (wCurrent == mBrowser && ((Menu<Song> *)wCurrent)->Choice() >= (browsed_dir != "/" ? 1 : 0)) || (wCurrent == mSearcher && !mSearcher->Current().first) || wCurrent == mLibSongs || wCurrent == mPlaylistEditor)
{
List *mList = (Menu<Song> *)wCurrent;
if (mList->Empty())
continue;
size_t i = mList->Choice();
mList->Select(i, !mList->isSelected(i));
wCurrent->Scroll(wDown);
@@ -1705,7 +1708,7 @@ int main(int argc, char *argv[])
}
else
{
if (current_screen == csBrowser)
if (current_screen == csBrowser && !mBrowser->Empty())
{
const Item &item = mBrowser->Current();
switch (item.type)