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