forked from openlp/openlp
130 lines
4.9 KiB
Python
130 lines
4.9 KiB
Python
# -*- coding: utf-8 -*-
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"""
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OpenLP - Open Source Lyrics Projection
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Copyright (c) 2008 Raoul Snyman
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Portions copyright (c) 2008-2009 Martin Thompson, Tim Bentley, Carsten Tinggaard
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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from PyQt4 import QtGui, QtCore
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from openlp.core.lib import translate
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from openlp.plugins.songs.forms.topicsdialog import Ui_TopicsDialog
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from openlp.plugins.songs.lib.classes import Topic
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class TopicsForm(QtGui.QDialog, Ui_TopicsDialog):
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"""
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Class documentation goes here.
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"""
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def __init__(self, songmanager, parent = None):
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"""
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Constructor
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"""
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QtGui.QDialog.__init__(self, parent)
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self.setupUi(self)
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self.songmanager = songmanager
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self.currentRow = 0
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self.topic = None
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QtCore.QObject.connect(self.DeleteButton,
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QtCore.SIGNAL(u'pressed()'), self.onDeleteButtonClick)
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QtCore.QObject.connect(self.ClearButton,
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QtCore.SIGNAL(u'pressed()'), self.onClearButtonClick)
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QtCore.QObject.connect(self.AddUpdateButton,
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QtCore.SIGNAL(u'pressed()'), self.onAddUpdateButtonClick)
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QtCore.QObject.connect(self.TopicNameEdit,
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QtCore.SIGNAL(u'lostFocus()'), self.onTopicNameEditLostFocus)
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QtCore.QObject.connect(self.TopicsListWidget,
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QtCore.SIGNAL(u'clicked(QModelIndex)'), self.onTopicsListWidgetItemClicked)
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def load_form(self):
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"""
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Refresh the screen and rest fields
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"""
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self.TopicsListWidget.clear()
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# tidy up screen
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self.onClearButtonClick()
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topics = self.songmanager.get_topics()
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for topic in topics:
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topic_name = QtGui.QListWidgetItem(topic.name)
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topic_name.setData(QtCore.Qt.UserRole, QtCore.QVariant(topic.id))
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self.TopicsListWidget.addItem(topic_name)
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if self.currentRow >= self.TopicsListWidget.count() :
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self.TopicsListWidget.setCurrentRow(self.TopicsListWidget.count() - 1)
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else:
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self.TopicsListWidget.setCurrentRow(self.currentRow)
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self._validate_form()
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self.onTopicsListWidgetItemClicked()
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def onDeleteButtonClick(self):
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"""
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Delete the Topic is the Topic is not attached to any songs
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"""
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self.songmanager.delete_topic(self.topic.id)
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self.load_form()
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def onTopicNameEditLostFocus(self):
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self._validate_form()
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def onAddUpdateButtonClick(self):
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"""
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Sent New or update details to the database
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"""
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if self._validate_form():
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if self.topic == None:
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self.topic = Topic()
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self.topic.name = unicode(self.TopicNameEdit.displayText())
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self.songmanager.save_topic(self.topic)
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self.onClearButtonClick()
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self.load_form()
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def onClearButtonClick(self):
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"""
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Tidy up screen if clear button pressed
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"""
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self.TopicNameEdit.setText(u'')
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self.MessageLabel.setText(u'')
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self.DeleteButton.setEnabled(False)
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self.topic = None
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self._validate_form()
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self.TopicNameEdit.setFocus()
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def onTopicsListWidgetItemClicked(self):
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"""
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An Topic has been selected display it
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If the Topic is attached to a Song prevent delete
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"""
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self.currentRow = self.TopicsListWidget.currentRow()
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item = self.TopicsListWidget.currentItem()
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if item is not None:
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item_id = (item.data(QtCore.Qt.UserRole)).toInt()[0]
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self.topic = self.songmanager.get_topic(item_id)
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self.TopicNameEdit.setText(self.topic.name)
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if len(self.topic.songs) > 0:
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self.MessageLabel.setText(translate(u'TopicForm', u'Topic in use "Delete" is disabled'))
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self.DeleteButton.setEnabled(False)
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else:
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self.MessageLabel.setText(translate(u'TopicForm', u'Topic in not used'))
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self.DeleteButton.setEnabled(True)
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self._validate_form()
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self.TopicNameEdit.setFocus()
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def _validate_form(self):
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# We need at lease a display name
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valid = True
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if len(self.TopicNameEdit.displayText()) == 0:
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valid = False
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self.TopicNameEdit.setStyleSheet(u'background-color: red; color: white')
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else:
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self.TopicNameEdit.setStyleSheet(u'')
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return valid
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