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strawberry-audio-player-win.../src/playlist/playlistcontainer.cpp

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/*
* Strawberry Music Player
* This file was part of Clementine.
* Copyright 2010, David Sansome <me@davidsansome.com>
*
* Strawberry 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 3 of the License, or
* (at your option) any later version.
*
* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <QApplication>
#include <QObject>
#include <QWidget>
#include <QItemSelectionModel>
#include <QSortFilterProxyModel>
#include <QAction>
#include <QList>
#include <QVariant>
#include <QPoint>
#include <QString>
#include <QRegExp>
#include <QSize>
#include <QFont>
#include <QIcon>
#include <QColor>
#include <QFrame>
#include <QPalette>
#include <QTimer>
#include <QTimeLine>
#include <QFileDialog>
#include <QLabel>
#include <QKeySequence>
#include <QToolButton>
#include <QUndoStack>
#include <QtEvents>
#include <QSettings>
#include "core/iconloader.h"
#include "playlist.h"
#include "playlisttabbar.h"
#include "playlistview.h"
#include "playlistcontainer.h"
#include "playlistmanager.h"
#include "playlistparsers/playlistparser.h"
#include "ui_playlistcontainer.h"
#include "widgets/qsearchfield.h"
const char *PlaylistContainer::kSettingsGroup = "Playlist";
const int PlaylistContainer::kFilterDelayMs = 100;
const int PlaylistContainer::kFilterDelayPlaylistSizeThreshold = 5000;
PlaylistContainer::PlaylistContainer(QWidget *parent)
: QWidget(parent),
ui_(new Ui_PlaylistContainer),
manager_(nullptr),
undo_(nullptr),
redo_(nullptr),
playlist_(nullptr),
starting_up_(true),
tab_bar_visible_(false),
tab_bar_animation_(new QTimeLine(500, this)),
no_matches_label_(nullptr),
filter_timer_(new QTimer(this)) {
ui_->setupUi(this);
no_matches_label_ = new QLabel(ui_->playlist);
no_matches_label_->setAlignment(Qt::AlignTop | Qt::AlignHCenter);
no_matches_label_->setAttribute(Qt::WA_TransparentForMouseEvents);
no_matches_label_->setWordWrap(true);
no_matches_label_->raise();
no_matches_label_->hide();
// Set the colour of the no matches label to the disabled text colour
QPalette no_matches_palette = no_matches_label_->palette();
const QColor no_matches_color = no_matches_palette.color(QPalette::Disabled, QPalette::Text);
no_matches_palette.setColor(QPalette::Normal, QPalette::WindowText, no_matches_color);
no_matches_palette.setColor(QPalette::Inactive, QPalette::WindowText, no_matches_color);
no_matches_label_->setPalette(no_matches_palette);
// Remove QFrame border
ui_->toolbar->setStyleSheet("QFrame { border: 0px; }");
// Make it bold
QFont no_matches_font = no_matches_label_->font();
no_matches_font.setBold(true);
no_matches_label_->setFont(no_matches_font);
settings_.beginGroup(kSettingsGroup);
// Tab bar
ui_->tab_bar->setExpanding(false);
ui_->tab_bar->setMovable(true);
connect(tab_bar_animation_, SIGNAL(frameChanged(int)), SLOT(SetTabBarHeight(int)));
ui_->tab_bar->setMaximumHeight(0);
// Connections
connect(ui_->tab_bar, SIGNAL(currentChanged(int)), SLOT(Save()));
connect(ui_->tab_bar, SIGNAL(Save(int)), SLOT(SavePlaylist(int)));
// set up timer for delayed filter updates
filter_timer_->setSingleShot(true);
filter_timer_->setInterval(kFilterDelayMs);
connect(filter_timer_, SIGNAL(timeout()), this, SLOT(UpdateFilter()));
// Replace playlist search filter with native search box.
connect(ui_->filter, SIGNAL(textChanged(QString)), SLOT(MaybeUpdateFilter()));
connect(ui_->playlist, SIGNAL(FocusOnFilterSignal(QKeyEvent*)), SLOT(FocusOnFilter(QKeyEvent*)));
ui_->filter->installEventFilter(this);
}
PlaylistContainer::~PlaylistContainer() { delete ui_; }
PlaylistView *PlaylistContainer::view() const { return ui_->playlist; }
void PlaylistContainer::SetActions(QAction *new_playlist, QAction *load_playlist, QAction *save_playlist, QAction *clear_playlist, QAction *next_playlist, QAction *previous_playlist) {
ui_->create_new->setDefaultAction(new_playlist);
ui_->load->setDefaultAction(load_playlist);
ui_->save->setDefaultAction(save_playlist);
ui_->clear->setDefaultAction(clear_playlist);
ui_->tab_bar->SetActions(new_playlist, load_playlist);
connect(new_playlist, SIGNAL(triggered()), SLOT(NewPlaylist()));
connect(save_playlist, SIGNAL(triggered()), SLOT(SavePlaylist()));
connect(load_playlist, SIGNAL(triggered()), SLOT(LoadPlaylist()));
connect(clear_playlist, SIGNAL(triggered()), SLOT(ClearPlaylist()));
connect(next_playlist, SIGNAL(triggered()), SLOT(GoToNextPlaylistTab()));
connect(previous_playlist, SIGNAL(triggered()), SLOT(GoToPreviousPlaylistTab()));
connect(clear_playlist, SIGNAL(triggered()), SLOT(ClearPlaylist()));
}
void PlaylistContainer::SetManager(PlaylistManager *manager) {
manager_ = manager;
ui_->tab_bar->SetManager(manager);
connect(ui_->tab_bar, SIGNAL(CurrentIdChanged(int)), manager, SLOT(SetCurrentPlaylist(int)));
connect(ui_->tab_bar, SIGNAL(Rename(int, QString)), manager, SLOT(Rename(int, QString)));
connect(ui_->tab_bar, SIGNAL(Close(int)), manager, SLOT(Close(int)));
connect(ui_->tab_bar, SIGNAL(PlaylistFavorited(int, bool)), manager, SLOT(Favorite(int, bool)));
connect(ui_->tab_bar, SIGNAL(PlaylistOrderChanged(QList<int>)), manager, SLOT(ChangePlaylistOrder(QList<int>)));
connect(manager, SIGNAL(CurrentChanged(Playlist*)), SLOT(SetViewModel(Playlist*)));
connect(manager, SIGNAL(PlaylistAdded(int, QString, bool)), SLOT(PlaylistAdded(int, QString, bool)));
connect(manager, SIGNAL(PlaylistManagerInitialized()), SLOT(Started()));
connect(manager, SIGNAL(PlaylistClosed(int)), SLOT(PlaylistClosed(int)));
connect(manager, SIGNAL(PlaylistRenamed(int, QString)), SLOT(PlaylistRenamed(int, QString)));
}
void PlaylistContainer::SetViewModel(Playlist *playlist) {
if (view()->selectionModel()) {
disconnect(view()->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)), this, SLOT(SelectionChanged()));
}
if (playlist_ && playlist_->proxy()) {
disconnect(playlist_->proxy(), SIGNAL(modelReset()), this, SLOT(UpdateNoMatchesLabel()));
disconnect(playlist_->proxy(), SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(UpdateNoMatchesLabel()));
disconnect(playlist_->proxy(), SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SLOT(UpdateNoMatchesLabel()));
}
if (playlist_) {
disconnect(playlist_, SIGNAL(modelReset()), this, SLOT(UpdateNoMatchesLabel()));
disconnect(playlist_, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(UpdateNoMatchesLabel()));
disconnect(playlist_, SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SLOT(UpdateNoMatchesLabel()));
}
playlist_ = playlist;
// Set the view
playlist->IgnoreSorting(true);
view()->setModel(playlist->proxy());
view()->SetItemDelegates(manager_->collection_backend());
view()->SetPlaylist(playlist);
view()->selectionModel()->select(manager_->current_selection(), QItemSelectionModel::ClearAndSelect);
playlist->IgnoreSorting(false);
connect(view()->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)), this, SLOT(SelectionChanged()));
emit ViewSelectionModelChanged();
// Update filter
ui_->filter->setText(playlist->proxy()->filterRegExp().pattern());
// Update the no matches label
connect(playlist_->proxy(), SIGNAL(modelReset()), SLOT(UpdateNoMatchesLabel()));
connect(playlist_->proxy(), SIGNAL(rowsInserted(QModelIndex, int, int)), SLOT(UpdateNoMatchesLabel()));
connect(playlist_->proxy(), SIGNAL(rowsRemoved(QModelIndex, int, int)), SLOT(UpdateNoMatchesLabel()));
connect(playlist_, SIGNAL(modelReset()), SLOT(UpdateNoMatchesLabel()));
connect(playlist_, SIGNAL(rowsInserted(QModelIndex, int, int)), SLOT(UpdateNoMatchesLabel()));
connect(playlist_, SIGNAL(rowsRemoved(QModelIndex, int, int)), SLOT(UpdateNoMatchesLabel()));
UpdateNoMatchesLabel();
// Ensure that tab is current
if (ui_->tab_bar->current_id() != manager_->current_id())
ui_->tab_bar->set_current_id(manager_->current_id());
// Sort out the undo/redo actions
delete undo_;
delete redo_;
undo_ = playlist->undo_stack()->createUndoAction(this);
redo_ = playlist->undo_stack()->createRedoAction(this);
undo_->setIcon(IconLoader::Load("edit-undo"));
undo_->setShortcut(QKeySequence::Undo);
redo_->setIcon(IconLoader::Load("edit-redo"));
redo_->setShortcut(QKeySequence::Redo);
ui_->undo->setDefaultAction(undo_);
ui_->redo->setDefaultAction(redo_);
emit UndoRedoActionsChanged(undo_, redo_);
}
void PlaylistContainer::ActivePlaying() {
UpdateActiveIcon(QIcon(":/pictures/tiny-play.png"));
}
void PlaylistContainer::ActivePaused() {
UpdateActiveIcon(QIcon(":/pictures/tiny-pause.png"));
}
void PlaylistContainer::ActiveStopped() { UpdateActiveIcon(QIcon()); }
void PlaylistContainer::UpdateActiveIcon(const QIcon &icon) {
// Unset all existing icons
for (int i = 0; i < ui_->tab_bar->count(); ++i) {
ui_->tab_bar->setTabIcon(i, QIcon());
}
// Set our icon
if (!icon.isNull()) ui_->tab_bar->set_icon_by_id(manager_->active_id(), icon);
}
void PlaylistContainer::PlaylistAdded(int id, const QString &name, bool favorite) {
const int index = ui_->tab_bar->count();
ui_->tab_bar->InsertTab(id, index, name, favorite);
// Are we startup up, should we select this tab?
if (starting_up_ && settings_.value("current_playlist", 1).toInt() == id) {
starting_up_ = false;
ui_->tab_bar->set_current_id(id);
}
if (ui_->tab_bar->count() > 1) {
// Have to do this here because sizeHint() is only valid when there's a tab in the bar.
tab_bar_animation_->setFrameRange(0, ui_->tab_bar->sizeHint().height());
if (!isVisible()) {
// Skip the animation since the window is hidden (eg. if we're still loading the UI).
tab_bar_visible_ = true;
ui_->tab_bar->setMaximumHeight(tab_bar_animation_->endFrame());
} else {
SetTabBarVisible(true);
}
}
}
void PlaylistContainer::Started() { starting_up_ = false; }
void PlaylistContainer::PlaylistClosed(int id) {
ui_->tab_bar->RemoveTab(id);
if (ui_->tab_bar->count() <= 1) SetTabBarVisible(false);
}
void PlaylistContainer::PlaylistRenamed(int id, const QString &new_name) {
ui_->tab_bar->set_text_by_id(id, new_name);
}
void PlaylistContainer::NewPlaylist() { manager_->New(tr("Playlist")); }
void PlaylistContainer::LoadPlaylist() {
QString filename = settings_.value("last_load_playlist").toString();
filename = QFileDialog::getOpenFileName(this, tr("Load playlist"), filename, manager_->parser()->filters());
if (filename.isNull()) return;
settings_.setValue("last_load_playlist", filename);
manager_->Load(filename);
}
void PlaylistContainer::SavePlaylist(int id = -1) {
// Use the tab name as the suggested name
QString suggested_name = ui_->tab_bar->tabText(ui_->tab_bar->currentIndex());
manager_->SaveWithUI(id, suggested_name);
}
void PlaylistContainer::ClearPlaylist() {
}
void PlaylistContainer::GoToNextPlaylistTab() {
// Get the next tab' id
int id_next = ui_->tab_bar->id_of((ui_->tab_bar->currentIndex() + 1) % ui_->tab_bar->count());
// Switch to next tab
manager_->SetCurrentPlaylist(id_next);
}
void PlaylistContainer::GoToPreviousPlaylistTab() {
// Get the next tab' id
int id_previous = ui_->tab_bar->id_of((ui_->tab_bar->currentIndex()+ui_->tab_bar->count()-1) % ui_->tab_bar->count());
// Switch to next tab
manager_->SetCurrentPlaylist(id_previous);
}
void PlaylistContainer::Save() {
if (starting_up_) return;
settings_.setValue("current_playlist", ui_->tab_bar->current_id());
}
void PlaylistContainer::SetTabBarVisible(bool visible) {
if (tab_bar_visible_ == visible) return;
tab_bar_visible_ = visible;
tab_bar_animation_->setDirection(visible ? QTimeLine::Forward : QTimeLine::Backward);
tab_bar_animation_->start();
}
void PlaylistContainer::SetTabBarHeight(int height) {
ui_->tab_bar->setMaximumHeight(height);
}
void PlaylistContainer::MaybeUpdateFilter() {
// delaying the filter update on small playlists is undesirable and an empty filter applies very quickly, too
if (manager_->current()->rowCount() < kFilterDelayPlaylistSizeThreshold || ui_->filter->text().isEmpty()) {
UpdateFilter();
}
else {
filter_timer_->start();
}
}
void PlaylistContainer::UpdateFilter() {
manager_->current()->proxy()->setFilterFixedString(ui_->filter->text());
ui_->playlist->JumpToCurrentlyPlayingTrack();
UpdateNoMatchesLabel();
}
void PlaylistContainer::UpdateNoMatchesLabel() {
Playlist *playlist = manager_->current();
const bool has_rows = playlist->rowCount() != 0;
const bool has_results = playlist->proxy()->rowCount() != 0;
QString text;
if (has_rows && !has_results) {
if (ui_->filter->text().trimmed().compare("the answer to life the universe and everything", Qt::CaseInsensitive) == 0) {
text = "42";
}
else {
text = tr("No matches found. Clear the search box to show the whole playlist again.");
}
}
if (!text.isEmpty()) {
no_matches_label_->setText(text);
RepositionNoMatchesLabel(true);
no_matches_label_->show();
}
else {
no_matches_label_->hide();
}
}
void PlaylistContainer::resizeEvent(QResizeEvent *e) {
QWidget::resizeEvent(e);
RepositionNoMatchesLabel();
}
void PlaylistContainer::FocusOnFilter(QKeyEvent *event) {
ui_->filter->setFocus();
switch (event->key()) {
case Qt::Key_Backspace:
break;
case Qt::Key_Escape:
ui_->filter->clear();
break;
default:
ui_->filter->setText(ui_->filter->text() + event->text());
break;
}
}
void PlaylistContainer::RepositionNoMatchesLabel(bool force) {
if (!force && !no_matches_label_->isVisible()) return;
const int kBorder = 10;
QPoint pos = ui_->playlist->viewport()->mapTo(ui_->playlist, QPoint(kBorder, kBorder));
QSize size = ui_->playlist->viewport()->size();
size.setWidth(size.width() - kBorder * 2);
size.setHeight(size.height() - kBorder * 2);
no_matches_label_->move(pos);
no_matches_label_->resize(size);
}
void PlaylistContainer::SelectionChanged() {
manager_->SelectionChanged(view()->selectionModel()->selection());
}
bool PlaylistContainer::eventFilter(QObject *objectWatched, QEvent *event) {
if (objectWatched == ui_->filter) {
if (event->type() == QEvent::KeyPress) {
QKeyEvent *e = static_cast<QKeyEvent*>(event);
switch (e->key()) {
//case Qt::Key_Up:
case Qt::Key_Down:
case Qt::Key_PageUp:
case Qt::Key_PageDown:
case Qt::Key_Return:
case Qt::Key_Enter:
view()->setFocus(Qt::OtherFocusReason);
QApplication::sendEvent(ui_->playlist, event);
return true;
case Qt::Key_Escape:
ui_->filter->clear();
return true;
default:
break;
}
}
}
return QWidget::eventFilter(objectWatched, event);
}
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