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""" This widget displays useful information related to the current
Ontology. For example you can search WordNet for synonyms or
print the definition for a selected term
"""
import logging
from PySide.QtCore import Slot, QTimer
from PySide.QtGui import QApplication, QMainWindow
from multiprocessing import Process, Pipe
from atexit import register, unregister
from pySUMOQt.Designer.DocumentationWidget import Ui_Form
from .Widget import RWidget
class DocumentationWidget(RWidget, Ui_Form):
""" The DocumentationWidget displays relevant information about the
current Ontology, and offers a search interface to WordNet. """
_WN_TROOL = list()
_WN_PROCESS = None
_WN_RECV = None
_WN_SEND = None
_TIMER = QTimer()
_TIMER.setSingleShot(True)
def __init__(self, mainwindow):
""" Initializes the DocumentationWidget. """
super(DocumentationWidget, self).__init__(mainwindow)
self.setupUi(self.mw)
self.lineEdit.returnPressed.connect(self.search)
self.log = logging.getLogger('.' + __name__)
if len(DocumentationWidget._WN_TROOL) == 0:
DocumentationWidget._WN_TROOL.append(1)
(DocumentationWidget._WN_RECV, DocumentationWidget._WN_SEND) = Pipe(False)
DocumentationWidget._WN_PROCESS = Process(target=DocumentationWidget._initialize, args=(DocumentationWidget._WN_SEND,))
DocumentationWidget._WN_PROCESS.start()
register(DocumentationWidget._WN_PROCESS.terminate)
register(DocumentationWidget._WN_SEND.close)
register(DocumentationWidget._WN_RECV.close)
@classmethod
def _initialize(cls, pipe):
cls.IA.init_wordnet()
pipe.send(cls.IA.wordnet)
@Slot()
def search(self):
""" Uses the IndexAbstractor to search for all occurrences of
string in the Ontology and displays them. """
if len(DocumentationWidget._WN_TROOL) == 1:
if not DocumentationWidget._WN_RECV.poll():
self.log.info('Searching')
self._TIMER.timeout.connect(self.search)
self._TIMER.start(3000)
return
DocumentationWidget._WN_TROOL.append(2)
RWidget.IA.wordnet = DocumentationWidget._WN_RECV.recv()
DocumentationWidget._WN_PROCESS.join()
unregister(DocumentationWidget._WN_PROCESS.terminate)
unregister(DocumentationWidget._WN_SEND.close)
unregister(DocumentationWidget._WN_RECV.close)
try:
searchOntology = self.getIndexAbstractor().search(
self.lineEdit.text())
self.OntologyText.setHtml(_searchToText(searchOntology))
except KeyError:
self.OntologyText.setPlainText('')
try:
searchWordnet = self.getIndexAbstractor().wordnet_locate(
self.lineEdit.text())
self.WordNetText.setPlainText(_locateToText(searchWordnet))
except KeyError:
self.WordNetText.setPlainText('')
def _searchToText(search_results):
string = HTML_HEADER
for ontology in search_results.keys():
string = ''.join([string, '<h2>', str(ontology), '</h2>\n<ul>', '\n'.join([_resultToLink(x, ontology) for x in search_results[ontology]]), '\n</ul>\n'])
return ''.join([string, HTML_FOOTER])
def _resultToLink(result, ontology):
return ''.join(['<li><a href="', str(result[1]), ' ', str(ontology), '">', result[0], '</a></li>'])
def _locateToText(locate_results):
return '\n'.join(locate_results)
HTML_HEADER = """\
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:9pt; font-weight:400; font-style:normal;">
"""
HTML_FOOTER = """\
</body></html>
"""
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