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# -*- coding: iso-8859-1 -*-
# Copyright (C) 2011-2014 Bastian Kleineidam
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from PyQt4 import QtCore
EmptyQVariant = QtCore.QVariant()
class RecentDocumentModel(QtCore.QAbstractListModel):
"""Model class for list of recent documents."""
def __init__ (self, parent=None, documents=[], maxentries=10):
"""Set document list."""
super(RecentDocumentModel, self).__init__(parent)
self.maxentries = maxentries
self.documents = documents[:maxentries]
def rowCount (self, parent=QtCore.QModelIndex()):
"""Return number of documents."""
return len(self.documents)
def index (self, row, column=0, parent=QtCore.QModelIndex()):
"""Return index of document in given row."""
return self.createIndex(row, column)
def data (self, index, role=QtCore.Qt.DisplayRole):
"""Return data at given index for given role."""
V = QtCore.QVariant
if not index.isValid() or \
not (0 <= index.row() < len(self.documents)) or \
index.column() != 0:
return EmptyQVariant
if role == QtCore.Qt.DisplayRole:
return V(self.documents[index.row()])
return EmptyQVariant
def headerData (self, section, orientation, role):
"""Return header column data for given parameters."""
return EmptyQVariant
def flags (self, index):
"""Return flags that given valid item index is enabled and
selected."""
if not index.isValid():
return 0
return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
def clear (self):
"""Empty the document list."""
self.beginResetModel()
self.documents = []
self.endResetModel()
def add_document (self, document):
"""Add document to model."""
if not document:
return False
assert isinstance(document, unicode)
while document in self.documents:
row = self.documents.index(document)
self.beginRemoveRows(QtCore.QModelIndex(), row, row)
del self.documents[row]
self.endRemoveRows()
while len(self.documents) >= self.maxentries:
row = len(self.documents) - 1
self.beginRemoveRows(QtCore.QModelIndex(), row, row)
del self.documents[row]
self.endRemoveRows()
self.beginInsertRows(QtCore.QModelIndex(), 0, 0)
self.documents.insert(0, document)
self.endInsertRows()
return True
def get_documents (self):
"""Return copy of document list."""
return self.documents[:]
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