class ResultsModel(QtCore.QAbstractItemModel):
    tracks = []
    def data(self, index, role):
        if role != QtCore.Qt.DisplayRole:
            return QtCore.QVariant()
        track = self.tracks[index.row()]
        if index.column() == 0:
            return QtCore.QVariant(track.artist)
        if index.column() == 1:
            return QtCore.QVariant(track.title)
        if index.column() == 2:
            return QtCore.QVariant(track.length)
    def index(self, row, column, parent = QtCore.QModelIndex()):
        if row>len(self.tracks)-1:
            return QtCore.QModelIndex()
        track = self.tracks[row]
        item = ''
        if column == 0:
            item = track.artist
        if column == 1:
            item = track.title
        if column == 2:
            item = track.length
        return self.createIndex(row, column, item)
        
    def parent(self, index):
        return QtCore.QModelIndex()
        
    def rowCount(self, parent = QtCore.QModelIndex()):
        return len(self.tracks)
        
    def columnCount(self, parent = QtCore.QModelIndex()):
        return 3
    
    def search(self, login, target):
        parser = SearchResultParser(login, target)
        parser.parse_base_page()
        self.tracks = parser.tracks