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openlp/openlp/core/ui/displaytagform.py

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# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2011 Raoul Snyman #
# Portions copyright (c) 2008-2011 Tim Bentley, Jonathan Corwin, Michael #
# Gorven, Scott Guerrieri, Meinert Jordan, Andreas Preikschat, Christian #
# Richter, Philip Ridout, Maikel Stuivenberg, Martin Thompson, Jon Tibble, #
# Carsten Tinggaard, Frode Woldsund #
# --------------------------------------------------------------------------- #
# 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; version 2 of the License. #
# #
# 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., 59 #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
###############################################################################
"""
The :mod:`DisplayTagTab` provides an Tag Edit facility. The Base set are
protected and included each time loaded. Custom tags can be defined and saved.
The Custom Tag arrays are saved in a pickle so QSettings works on them. Base
Tags cannot be changed.
"""
import cPickle
from PyQt4 import QtCore, QtGui
from openlp.core.lib import translate, DisplayTags
from openlp.core.lib.ui import UiStrings, critical_error_message_box
from openlp.core.ui.displaytagdialog import Ui_DisplayTagDialog
class DisplayTagForm(QtGui.QDialog, Ui_DisplayTagDialog):
"""
The :class:`DisplayTagTab` manages the settings tab .
"""
def __init__(self, parent):
"""
Constructor
"""
QtGui.QDialog.__init__(self, parent)
self.setupUi(self)
QtCore.QObject.connect(self.tagTableWidget,
QtCore.SIGNAL(u'clicked(QModelIndex)'), self.onRowSelected)
QtCore.QObject.connect(self.defaultPushButton,
QtCore.SIGNAL(u'pressed()'), self.onDefaultPushed)
QtCore.QObject.connect(self.newPushButton,
QtCore.SIGNAL(u'pressed()'), self.onNewPushed)
QtCore.QObject.connect(self.updatePushButton,
QtCore.SIGNAL(u'pressed()'), self.onUpdatePushed)
QtCore.QObject.connect(self.deletePushButton,
QtCore.SIGNAL(u'pressed()'), self.onDeletePushed)
def exec_(self):
"""
Load Display and set field state.
"""
# Create initial copy from master
self._resetTable()
DisplayTags.reset_html_tags()
user_expands = QtCore.QSettings().value(u'displayTags/html_tags',
QtCore.QVariant(u'')).toString()
# cPickle only accepts str not unicode strings
user_expands_string = str(unicode(user_expands).encode(u'utf8'))
if user_expands_string:
user_tags = cPickle.loads(user_expands_string)
# If we have some user ones added them as well
for t in user_tags:
DisplayTags.add_html_tag(t)
self.selected = -1
self.load()
return QtGui.QDialog.exec_(self)
def load(self):
self.newPushButton.setEnabled(True)
self.updatePushButton.setEnabled(False)
self.deletePushButton.setEnabled(False)
for linenumber, html in enumerate(DisplayTags.get_html_tags()):
self.tagTableWidget.setRowCount(
self.tagTableWidget.rowCount() + 1)
self.tagTableWidget.setItem(linenumber, 0,
QtGui.QTableWidgetItem(html[u'desc']))
self.tagTableWidget.setItem(linenumber, 1,
QtGui.QTableWidgetItem(self._strip(html[u'start tag'])))
self.tagTableWidget.setItem(linenumber, 2,
QtGui.QTableWidgetItem(html[u'start html']))
self.tagTableWidget.setItem(linenumber, 3,
QtGui.QTableWidgetItem(html[u'end html']))
self.tagTableWidget.resizeRowsToContents()
self.descriptionLineEdit.setText(u'')
self.tagLineEdit.setText(u'')
self.startTagLineEdit.setText(u'')
self.endTagLineEdit.setText(u'')
self.descriptionLineEdit.setEnabled(False)
self.tagLineEdit.setEnabled(False)
self.startTagLineEdit.setEnabled(False)
self.endTagLineEdit.setEnabled(False)
def accept(self):
"""
Save Custom tags in a pickle .
"""
temp = []
for tag in DisplayTags.get_html_tags():
if not tag[u'protected']:
temp.append(tag)
if temp:
ctemp = cPickle.dumps(temp)
QtCore.QSettings().setValue(u'displayTags/html_tags',
QtCore.QVariant(ctemp))
else:
QtCore.QSettings().setValue(u'displayTags/html_tags',
QtCore.QVariant(u''))
return QtGui.QDialog.accept(self)
def reject(self):
"""
Reset Custom tags from Settings.
"""
self._resetTable()
return QtGui.QDialog.reject(self)
def onRowSelected(self):
"""
Table Row selected so display items and set field state.
"""
row = self.tagTableWidget.currentRow()
html = DisplayTags.get_html_tags()[row]
self.selected = row
self.descriptionLineEdit.setText(html[u'desc'])
self.tagLineEdit.setText(self._strip(html[u'start tag']))
self.startTagLineEdit.setText(html[u'start html'])
self.endTagLineEdit.setText(html[u'end html'])
if html[u'protected']:
self.descriptionLineEdit.setEnabled(False)
self.tagLineEdit.setEnabled(False)
self.startTagLineEdit.setEnabled(False)
self.endTagLineEdit.setEnabled(False)
self.updatePushButton.setEnabled(False)
self.deletePushButton.setEnabled(False)
else:
self.descriptionLineEdit.setEnabled(True)
self.tagLineEdit.setEnabled(True)
self.startTagLineEdit.setEnabled(True)
self.endTagLineEdit.setEnabled(True)
self.updatePushButton.setEnabled(True)
self.deletePushButton.setEnabled(True)
def onNewPushed(self):
"""
Add a new tag to list only if it is not a duplicate.
"""
for html in DisplayTags.get_html_tags():
if self._strip(html[u'start tag']) == u'n':
critical_error_message_box(
translate('OpenLP.DisplayTagTab', 'Update Error'),
translate('OpenLP.DisplayTagTab',
'Tag "n" already defined.'))
return
# Add new tag to list
tag = {u'desc': u'New Item', u'start tag': u'{n}',
u'start html': u'<Html_here>', u'end tag': u'{/n}',
u'end html': u'</and here>', u'protected': False}
DisplayTags.add_html_tag(tag)
self._resetTable()
# Highlight new row
self.tagTableWidget.selectRow(self.tagTableWidget.rowCount() - 1)
self.onRowSelected()
def onDefaultPushed(self):
"""
Remove all Custom Tags and reset to base set only.
"""
DisplayTags.reset_html_tags()
self._resetTable()
def onDeletePushed(self):
"""
Delete selected custom tag.
"""
if self.selected != -1:
DisplayTags.remove_html_tag(self.selected)
self.selected = -1
self._resetTable()
def onUpdatePushed(self):
"""
Update Custom Tag details if not duplicate.
"""
html_expands = DisplayTags.get_html_tags()
if self.selected != -1:
html = html_expands[self.selected]
tag = unicode(self.tagLineEdit.text())
for linenumber, html1 in enumerate(html_expands):
if self._strip(html1[u'start tag']) == tag and \
linenumber != self.selected:
critical_error_message_box(
translate('OpenLP.DisplayTagTab', 'Update Error'),
unicode(translate('OpenLP.DisplayTagTab',
'Tag %s already defined.')) % tag)
return
html[u'desc'] = unicode(self.descriptionLineEdit.text())
html[u'start html'] = unicode(self.startTagLineEdit.text())
html[u'end html'] = unicode(self.endTagLineEdit.text())
html[u'start tag'] = u'{%s}' % tag
html[u'end tag'] = u'{/%s}' % tag
self.selected = -1
self._resetTable()
def _resetTable(self):
"""
Reset List for loading.
"""
self.tagTableWidget.clearContents()
self.tagTableWidget.setRowCount(0)
def _strip(self, tag):
"""
Remove tag wrappers for editing.
"""
tag = tag.replace(u'{', u'')
tag = tag.replace(u'}', u'')
return tag
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