// Search button handler for the search button on the main page
void gui::search_button_handler()
{
// Clear both playlist and song list widgets and update the playlist list widget
playslists->clear();
songs->clear();
update_playlists();
}
// Button handler for saving manually added playlists
void gui::add_save_playlist_button_handler()
{
// Try getting popularity as an integer
int popularity;
popularity = atoi(add_popularity->text().toStdString().c_str());
std::stringstream out;
out << popularity;
// Verify that popularity is an integer and its greater than 0
if (add_popularity->text().length() == (int)out.str().length() && popularity >= 0)
{
// Create a temporary playlist object
playlist_obj temp;
temp.songs = add_songs;
temp.popularity = popularity;
// Try saving the playlist
if (list_of_playlists->insert_playlist(temp))
{
// If successful, reset add page and return to main page
add_songs.clear();
add_displayed_song = NULL;
add_selected_songs_list->clear();
add_popularity->setText("0");
add_search_song->setText("");
add_load_file->setText("");
add_selected_song_label->setText("-- No song selected --");
window->setCurrentIndex(0);
// Rebuild the trie to update all preprocessed values
// - Four suggested songs
// - Eight most popular playlists
delete trie;
build_trie();
// Update the playlist widget to reflect changes
playslists->clear();
update_playlists();
}
else
{
// If not successful with saving playlist, show error message
QMessageBox messageBox;
messageBox.setWindowTitle("Error");
messageBox.setText("Error Adding Playlist. Playlist Not Added");
messageBox.exec();
}
}
else
{
// If popularity entry is invalid, show error message
QMessageBox messageBox;
messageBox.setWindowTitle("Error");
messageBox.setText("Please Enter A Valid Popularity (Integer Greater Than or Equal to 0)");
messageBox.exec();
}
}
/**
* Run all pending updates.
*
* Returns true on success, false on failure.
*/
bool
Control::run_pending_updates()
{
/* MPD has new current song */
if (idle_events & MPD_IDLE_PLAYER) {
if (!get_current_song()) {
return false;
}
/* MPD_IDLE_PLAYER will be subtracted below */
}
/* MPD has new status information */
if (idle_events & (MPD_IDLE_PLAYER | MPD_IDLE_MIXER | MPD_IDLE_OPTIONS | MPD_IDLE_QUEUE)) {
if (!get_status()) {
return false;
}
set_update_done(MPD_IDLE_PLAYER);
set_update_done(MPD_IDLE_MIXER);
set_update_done(MPD_IDLE_OPTIONS);
/* MPD_IDLE_QUEUE will be subtracted below */
}
/* MPD has updates to queue */
if (idle_events & MPD_IDLE_QUEUE) {
if (!update_queue()) {
return false;
}
set_update_done(MPD_IDLE_QUEUE);
}
/* MPD has updates to a stored playlist */
if (idle_events & MPD_IDLE_STORED_PLAYLIST) {
if (!update_playlist_index()) {
return false;
}
if (!update_playlists()) {
return false;
}
set_update_done(MPD_IDLE_STORED_PLAYLIST);
}
/* MPD has new song database */
if (idle_events & MPD_IDLE_DATABASE) {
if (!update_library()) {
return false;
}
set_update_done(MPD_IDLE_DATABASE);
}
/* Hack to make has_pending_updates() work smoothly without too much
* effort. We don't care about the rest of the events, so we just
* pretend they never happened. */
idle_events = 0;
return true;
}
// Button handler for loading playlists from a file
void gui::add_load_file_button_handler()
{
// Get filename from LineEdit
string file_name = add_load_file->text().toStdString();
// Attempt to add playlists in the file
if(list_of_playlists->insert_playlists(file_name))
{
// If successful, reset add page and return to main page
add_songs.clear();
add_displayed_song = NULL;
add_selected_songs_list->clear();
add_popularity->setText("0");
add_search_song->setText("");
add_load_file->setText("");
add_selected_song_label->setText("-- No song selected --");
window->setCurrentIndex(0);
// Rebuild the trie to update all preprocessed values
// - Four suggested songs
// - Eight most popular playlists
delete trie;
build_trie();
// Update the playlist widget to reflect changes
playslists->clear();
update_playlists();
}
else
{
// If not successful, show error message
QMessageBox messageBox;
messageBox.setWindowTitle("Error");
messageBox.setText("One Or More Playlists Not Added. Check File Name and Contents.");
messageBox.exec();
}
}
// Initialize widgets and add them to the main page
void gui::generate_main_page()
{
// Initialize Help Button
help_button = new QPushButton("?", this);
connect(help_button, SIGNAL(clicked()), this, SLOT(help_button_handler()));
help_button->setFixedHeight(25);
help_button->setFixedWidth(25);
// Initialize Search Button
search_button = new QPushButton("Search!", this);
connect(search_button, SIGNAL(clicked()), this, SLOT(search_button_handler()));
// Initialize Add Playlist Button
add_playlist_button = new QPushButton("Add", this);
connect(add_playlist_button, SIGNAL(clicked()), this, SLOT(add_playlist_button_handler()));
// Initialize Playlist Label
playlist_label = new QLabel(this);
playlist_label->setFrameStyle(QFrame::NoFrame);
playlist_label->setText("Top 8 Playlists:");
playlist_label->setPalette(text);
// Initialize Songs Label
songs_label = new QLabel(this);
songs_label->setFrameStyle(QFrame::NoFrame);
songs_label->setText("Songs:");
songs_label->setPalette(text);
// Initialize Current Song Title Label
current_label = new QLabel(this);
current_label->setFrameStyle(QFrame::NoFrame);
current_label->setText("Now Playing:");
current_label->setPalette(text);
// Initialize Current Song Label
current_song_label = new QLabel(this);
current_song_label->setFrameStyle(QFrame::NoFrame);
current_song_label->setText("");
current_song_label->setPalette(text);
// Initialize QCompleter WordList Model
word_model = new QStringListModel();
// Initialize QCompleter
completer = new QCompleter(word_model);
completer->setCompletionMode(QCompleter::PopupCompletion);
completer->setModelSorting(QCompleter::UnsortedModel);
// Initialize Search Bar
search_bar = new QLineEdit("", this);
search_bar->setReadOnly(false);
search_bar->setAlignment(Qt::AlignLeft | Qt::AlignTop);
search_bar->setCompleter(completer);
search_bar->installEventFilter(this);
connect(search_bar, SIGNAL(textEdited(const QString &)), this, SLOT(update_suggestions(const QString &)));
// Initialize Playlist List
playslists = new QListWidget(this);
update_playlists();
// Initialize Songs List
songs = new QListWidget(this);
connect(playslists, SIGNAL(itemSelectionChanged()), this, SLOT(update_songs()));
connect(songs, SIGNAL(itemSelectionChanged()), this, SLOT(print_song_info()));
// Initialize Layout
main_layout = new QGridLayout;
main_layout->setRowMinimumHeight(4,5);
main_layout->setRowMinimumHeight(7,5);
main_layout->setRowMinimumHeight(1,5);
// Add Buttons
main_layout->addWidget(help_button, 0, 0, 1, 1);
main_layout->addWidget(search_button, 0, 2, 1, 1);
main_layout->addWidget(add_playlist_button, 9, 2, 1, 1);
// Add Labels
main_layout->addWidget(playlist_label, 2, 0, 1, -1);
main_layout->addWidget(songs_label, 5, 0, 1, -1);
main_layout->addWidget(current_label, 8, 0, 1, -1);
main_layout->addWidget(current_song_label, 9, 0, 1, 2);
// Add Search Bar
main_layout->addWidget(search_bar, 0, 1, 1, 1);
// Add Lists
main_layout->addWidget(playslists, 3, 0, 1, -1);
main_layout->addWidget(songs, 6, 0, 1, -1);
}
