// removes file history entries which shouldn't be saved anymore
// (see the loop below for the details)
void FileHistory::Purge(bool alwaysUseDefaultState) {
// minOpenCount is set to the number of times a file must have been
// opened to be kept (provided that there is no other valuable
// information about the file to be remembered)
int minOpenCount = 0;
if (alwaysUseDefaultState) {
Vec<DisplayState*> frequencyList;
GetFrequencyOrder(frequencyList);
if (frequencyList.size() > FILE_HISTORY_MAX_RECENT)
minOpenCount = frequencyList.at(FILE_HISTORY_MAX_FREQUENT)->openCount / 2;
}
for (size_t j = states->size(); j > 0; j--) {
DisplayState* state = states->at(j - 1);
// never forget pinned documents, documents we've remembered a password for and
// documents for which there are favorites
if (state->isPinned || state->decryptionKey != nullptr || state->favorites->size() > 0)
continue;
// forget about missing documents without valuable state
if (state->isMissing && (alwaysUseDefaultState || state->useDefaultState))
states->RemoveAt(j - 1);
// forget about files last opened longer ago than the last FILE_HISTORY_MAX_FILES ones
else if (j > FILE_HISTORY_MAX_FILES)
states->RemoveAt(j - 1);
// forget about files that were hardly used (and without valuable state)
else if (alwaysUseDefaultState && state->openCount < minOpenCount && j > FILE_HISTORY_MAX_RECENT)
states->RemoveAt(j - 1);
else
continue;
DeleteDisplayState(state);
}
}
void FileHistory::Clear(bool keepFavorites) {
if (!states)
return;
Vec<DisplayState*> keep;
for (size_t i = 0; i < states->size(); i++) {
if (keepFavorites && states->at(i)->favorites->size() > 0) {
states->at(i)->openCount = 0;
keep.Append(states->at(i));
} else {
DeleteDisplayState(states->at(i));
}
}
*states = keep;
}
void Favorites::RemoveAllForFile(const WCHAR* filePath) {
DisplayState* fav = GetFavByFilePath(filePath);
if (!fav) {
return;
}
for (size_t i = 0; i < fav->favorites->Count(); i++) {
DeleteFavorite(fav->favorites->At(i));
}
fav->favorites->Reset();
if (!gGlobalPrefs->rememberOpenedFiles) {
gFileHistory.Remove(fav);
DeleteDisplayState(fav);
}
}
void Favorites::Remove(const WCHAR* filePath, int pageNo) {
DisplayState* fav = GetFavByFilePath(filePath);
if (!fav) {
return;
}
Favorite* fn = FindByPage(fav, pageNo);
if (!fn) {
return;
}
fav->favorites->Remove(fn);
DeleteFavorite(fn);
if (!gGlobalPrefs->rememberOpenedFiles && 0 == fav->favorites->Count()) {
gFileHistory.Remove(fav);
DeleteDisplayState(fav);
}
}
