155 lines
4.7 KiB
Python
155 lines
4.7 KiB
Python
# Relational
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# Copyright (C) 2008-2015 Salvo "LtWorf" Tomaselli
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#
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# Relational is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# author Salvo "LtWorf" Tomaselli <tiposchi@tiscali.it>
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from PyQt5 import QtGui, QtWidgets
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from relational_gui import rel_edit
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from relational import relation
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class creatorForm(QtWidgets.QDialog):
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def __init__(self, rel=None):
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QtWidgets.QDialog.__init__(self)
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self.setSizeGripEnabled(True)
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self.result_relation = None
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self.rel = rel
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def setUi(self, ui):
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self.ui = ui
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self.table = self.ui.table
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if self.rel == None:
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self.setup_empty()
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else:
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self.setup_relation(self.rel)
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def setup_relation(self, rel):
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self.table.insertRow(0)
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for i in rel.header:
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item = QtWidgets.QTableWidgetItem()
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item.setText(i)
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self.table.insertColumn(self.table.columnCount())
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self.table.setItem(0, self.table.columnCount() - 1, item)
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for i in rel.content:
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self.table.insertRow(self.table.rowCount())
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for j in range(len(i)):
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item = QtWidgets.QTableWidgetItem()
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item.setText(i[j])
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self.table.setItem(self.table.rowCount() - 1, j, item)
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pass
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def setup_empty(self):
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self.table.insertColumn(0)
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self.table.insertColumn(0)
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self.table.insertRow(0)
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self.table.insertRow(0)
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i00 = QtWidgets.QTableWidgetItem()
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i01 = QtWidgets.QTableWidgetItem()
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i10 = QtWidgets.QTableWidgetItem()
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i11 = QtWidgets.QTableWidgetItem()
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i00.setText('Field name 1')
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i01.setText('Field name 2')
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i10.setText('Value 1')
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i11.setText('Value 2')
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self.table.setItem(0, 0, i00)
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self.table.setItem(0, 1, i01)
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self.table.setItem(1, 0, i10)
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self.table.setItem(1, 1, i11)
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def create_relation(self):
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h = (self.table.item(0, i).text()
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for i in range(self.table.columnCount()))
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try:
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header = relation.header(h)
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except Exception as e:
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QtWidgets.QMessageBox.information(None, QtWidgets.QApplication.translate("Form", "Error"), "%s\n%s" % (
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QtWidgets.QApplication.translate("Form", "Header error!"), e.__str__()))
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return None
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r = relation.relation()
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r.header = header
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for i in range(1, self.table.rowCount()):
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hlist = []
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for j in range(self.table.columnCount()):
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try:
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hlist.append(self.table.item(i, j).text())
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except:
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QtWidgets.QMessageBox.information(None, QtWidgets.QApplication.translate(
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"Form", "Error"), QtWidgets.QApplication.translate("Form", "Unset value in %d,%d!" % (i + 1, j + 1)))
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return None
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r.insert(hlist)
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return r
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def accept(self):
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self.result_relation = self.create_relation()
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# Doesn't close the window in case of errors
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if self.result_relation != None:
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QtWidgets.QDialog.accept(self)
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def reject(self):
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self.result_relation = None
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QtWidgets.QDialog.reject(self)
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def addColumn(self):
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self.table.insertColumn(self.table.columnCount())
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def addRow(self):
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self.table.insertRow(1)
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def deleteColumn(self):
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if self.table.columnCount() > 1:
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self.table.removeColumn(self.table.currentColumn())
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def deleteRow(self):
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if self.table.rowCount() > 2:
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self.table.removeRow(self.table.currentRow())
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def edit_relation(rel=None):
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'''Opens the editor for the given relation and returns a _new_ relation
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containing the new relation.
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If the user cancels, it returns None'''
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ui = rel_edit.Ui_Dialog()
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Form = creatorForm(rel)
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ui.setupUi(Form)
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Form.setUi(ui)
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Form.exec_()
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return Form.result_relation
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if __name__ == '__main__':
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import sys
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app = QtGui.QApplication(sys.argv)
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r = relation.relation(
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"/home/salvo/dev/relational/trunk/samples/people.csv")
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print (edit_relation(r))
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