Clementine-audio-player-Mac-Linux-Windows/src/playlist/playlistcontainer.cpp

/* This file is part of Clementine.

   Clementine 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.

   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "playlistcontainer.h"
#include "playlistmanager.h"
#include "ui_playlistcontainer.h"
#include "ui/iconloader.h"

#include <QUndoStack>
#include <QInputDialog>
#include <QSettings>
#include <QTimeLine>

const char* PlaylistContainer::kSettingsGroup = "Playlist";

PlaylistContainer::PlaylistContainer(QWidget *parent)
  : QWidget(parent),
    ui_(new Ui_PlaylistContainer),
    undo_(NULL),
    redo_(NULL),
    starting_up_(true),
    tab_bar_visible_(false),
    tab_bar_animation_(new QTimeLine(500, this))
{
  ui_->setupUi(this);

  settings_.beginGroup(kSettingsGroup);

  // Icons
  ui_->clear->setIcon(IconLoader::Load("edit-clear-locationbar-ltr"));

  // Tab bar
  ui_->tab_bar->setExpanding(false);
  ui_->tab_bar->setMovable(true);
  ui_->tab_bar->setShape(QTabBar::RoundedSouth);

  connect(tab_bar_animation_, SIGNAL(frameChanged(int)), SLOT(SetTabBarHeight(int)));
  ui_->tab_bar->setMaximumHeight(0);

  // Connections
  connect(ui_->clear, SIGNAL(clicked()), SLOT(ClearFilter()));
  connect(ui_->tab_bar, SIGNAL(currentChanged(int)), SLOT(Save()));
}

PlaylistContainer::~PlaylistContainer() {
  delete ui_;
}

PlaylistView* PlaylistContainer::view() const {
  return ui_->playlist;
}

void PlaylistContainer::SetActions(
    QAction *new_playlist, QAction *save_playlist, QAction *load_playlist) {
  ui_->create_new->setDefaultAction(new_playlist);
  ui_->save->setDefaultAction(save_playlist);
  ui_->load->setDefaultAction(load_playlist);

  ui_->tab_bar->SetActions(new_playlist, save_playlist, load_playlist);

  connect(new_playlist, SIGNAL(triggered()), SLOT(NewPlaylist()));
  connect(save_playlist, SIGNAL(triggered()), SLOT(SavePlaylist()));
  connect(load_playlist, SIGNAL(triggered()), SLOT(LoadPlaylist()));
}

void PlaylistContainer::ClearFilter() {
  ui_->filter->clear();
  ui_->filter->setFocus();
}

void PlaylistContainer::SetManager(PlaylistManager *manager) {
  manager_ = 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(Remove(int)),
          manager, SLOT(Remove(int)));
  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)),
          SLOT(PlaylistAdded(int,QString)));
  connect(manager, SIGNAL(PlaylistRemoved(int)),
          SLOT(PlaylistRemoved(int)));
  connect(manager, SIGNAL(PlaylistRenamed(int,QString)),
          SLOT(PlaylistRenamed(int,QString)));
}

void PlaylistContainer::SetViewModel(Playlist* playlist) {
  // Set the view
  playlist->IgnoreSorting(true);
  view()->setModel(playlist);
  view()->SetItemDelegates(manager_->library_backend());
  playlist->IgnoreSorting(false);

  // 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(":tiny-start.png"));
}

void PlaylistContainer::ActivePaused() {
  UpdateActiveIcon(QIcon(":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) {
  int index = ui_->tab_bar->count();
  ui_->tab_bar->InsertTab(id, index, name);

  // 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::PlaylistRemoved(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() {
  QString name = QInputDialog::getText(this, tr("New playlist"),
                                       tr("Enter a name for the new playlist"),
                                       QLineEdit::Normal, tr("Playlist"));
  if (name.isNull())
    return;

  manager_->New(name);
}

void PlaylistContainer::LoadPlaylist() {

}

void PlaylistContainer::SavePlaylist() {

}

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);
}