wgPlaylist.py

   1 from PyQt4 import QtGui, QtCore
   2 from thread import start_new_thread
   3
   4 from wgSongList import SongList
   5
   6 from misc import *
   7 from clSettings import settings
   8
   9
  10 class Playlist(QtGui.QWidget):
  11     """The Playlist widget is a list optimized for displaying a playlist, with filtering."""
  12     name=None   # name of this playlist
  13     txtFilter=None  # filter input
  14     btnClearFilter=None
  15     cmbMode=None    # what mode? library, playlist?
  16     modes=[]
  17     lstSongs=None   # list
  18     winMain=None    # the main window
  19     onKeyPress=None
  20     _timerID=None
  21     frameLayout = None
  22     filterLayout = None
  23
  24     def __init__(self, parent, wMain, headers, name, onDoubleClick, onKeyPress, modes):
  25         QtGui.QWidget.__init__(self, parent)
  26
  27         self.name=name
  28         self.winMain=wMain
  29
  30         self.onKeyPress=onKeyPress
  31
  32         self.lstSongs=SongList(parent, self.name, headers, onDoubleClick)
  33
  34         self.txtFilter=QtGui.QLineEdit()
  35
  36         self.btnClearFilter = QtGui.QPushButton(QtGui.QIcon('gfx/clear_left.png'), "")
  37         self.btnClearFilter.palette().setColor(QtGui.QPalette.Button, self.palette().color(QtGui.QPalette.Window))
  38         self.btnClearFilter.connect(self.btnClearFilter, QtCore.SIGNAL('clicked(bool)'), self.clearTxtFilter)
  39
  40         self.cmbMode=QtGui.QComboBox()
  41         self.setModes(modes)
  42
  43         self.frameLayout = QtGui.QVBoxLayout()
  44         self.frameLayout.setSpacing(1)
  45         self.frameLayout.setMargin(0)
  46         self.filterLayout = QtGui.QHBoxLayout()
  47         self.filterLayout.setSpacing(0)
  48         self.filterLayout.addWidget(self.txtFilter)
  49         self.filterLayout.addWidget(self.btnClearFilter)
  50         self.frameLayout.addWidget(self.cmbMode)
  51         self.frameLayout.addLayout(self.filterLayout);
  52         self.frameLayout.addWidget(self.lstSongs)
  53         self.setLayout(self.frameLayout)
  54
  55         self.connect(self.txtFilter, QtCore.SIGNAL('textChanged(const QString&)'), self.txtFilterChange)
  56         self.connect(self.txtFilter, QtCore.SIGNAL('editingFinished()'), self.txtFilterQuit)
  57         self.connect(self.cmbMode, QtCore.SIGNAL('currentIndexChanged(const QString&)'), self.onModeChangeChange)
  58
  59     def clearTxtFilter(self, event):
  60         self.txtFilter.setText("")
  61
  62     _prevTxtFilter=None
  63     def timerEvent(self, event):
  64         if self.txtFilter.text()!=self._prevTxtFilter:
  65             # only filter after a little while
  66             self.killTimer(self._timerID)
  67             self._timerID=None
  68             self.filter()
  69     def keyPressEvent(self, event):
  70         self.onKeyPress(event)
  71     def txtFilterChange(self):
  72         if self._timerID==None:
  73             # only start filtering after a little while
  74             self._timerID=self.startTimer(500)
  75     def txtFilterQuit(self):
  76         if self._timerID:
  77             self.killTimer(self._timerID)
  78             self._timerID=None
  79     def updateSongs(self, songs):
  80         """Update the list of songs."""
  81         start_new_thread(self._update, (songs,))
  82     def _update(self, songs):
  83         self.lstSongs.updateSongs(songs)
  84         if len(self.txtFilter.text()):
  85             self.filter()
  86
  87     def setMode(self, mode, levels=''):
  88         """Set the mode of showing the list."""
  89         if mode=='playlist':
  90             self.cmbMode.setCurrentIndex(0)
  91         else:
  92             self.cmbMode.setCurrentIndex(self.cmbMode.findText(levels))
  93     def selectedSongs(self):
  94         """Get the selected songs."""
  95         return self.lstSongs.selectedSongs()
  96     def selectedIds(self):
  97         """Get the selected songIDs."""
  98         return map(lambda song: song._data['id'], self.lstSongs.selectedSongs())
  99     def getSelItemID(self):
 100         """Get the id of the first selected song."""
 101         try:
 102             return self.lstSongs.selectedSongs()[0].getID()
 103         except:
 104             return -1
 105
 106     def filter(self):
 107         """Filter the songs according to the inputbox."""
 108         self.lstSongs.killFilters()
 109         start_new_thread(self.lstSongs.filter, (str(self.txtFilter.text()).strip().lower(), ))
 110
 111     def colorID(self, id, clr):
 112         """Color song with ID $id with color $clr."""
 113         self.lstSongs.colorID(id, clr)
 114
 115     def onModeChangeChange(self, value):
 116         if value=='playlist':
 117             self.lstSongs.setMode('playlist')
 118         else:
 119             self.lstSongs.setMode('library', self.modes[self.cmbMode.currentIndex()])
 120         settings.set("l%s.mode"%(self.name), self.cmbMode.currentIndex())
 121         self.filter()
 122
 123     def showColumn(self, column, show=True):
 124         """Show or hide column $column."""
 125         self.lstSongs.showColumn(column, show)
 126     def selectRow(self, row):
 127         """Select row $row."""
 128         self.lstSongs.selectRow(row)
 129     def ensureVisible(self, id):
 130         """Make sure song with ID $id is visible."""
 131         self.lstSongs.ensureVisible(id)
 132
 133     def setModes(self, modes):
 134         i=int(settings.get("l%s.mode"%(self.name), 0))
 135         self.modes=['playlist']
 136         self.modes.extend(modes)
 137         self.cmbMode.clear()
 138         self.cmbMode.addItem('playlist')
 139         for mode in modes:
 140             if mode:
 141                 self.cmbMode.addItem(mode.replace('$', ''))
 142         self.cmbMode.setCurrentIndex(i)
 143         self.onModeChangeChange(str(self.cmbMode.itemText(i)))