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# -*- coding: utf-8 -*-
#
# AWL simulator - GUI symbol table edit widget
#
# Copyright 2014-2015 Michael Buesch <m@bues.ch>
#
# 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 __future__ import division, absolute_import, print_function, unicode_literals
from awlsim.common.compat import *
from awlsim.gui.util import *
class SymTabModel(QAbstractTableModel):
# Signal: Emitted, if the source code changed.
sourceChanged = Signal()
def __init__(self, symTab):
QAbstractTableModel.__init__(self)
self.symTab = symTab
self.__source = SymTabSource("Unnamed symbol table")
self.__needSourceUpdate = True
def emitSourceChanged(self):
self.__needSourceUpdate = True
self.sourceChanged.emit()
def revert(self):
QAbstractTableModel.revert(self)
self.__needSourceUpdate = True
def getSymTab(self):
return self.symTab
def deleteSymbol(self, row):
if row >= 0 and row < len(self.symTab):
self.beginResetModel()
del self.symTab[row]
self.endResetModel()
self.emitSourceChanged()
def moveSymbol(self, fromRow, toRow):
self.beginResetModel()
sym = self.symTab.pop(fromRow)
self.symTab.insert(toRow, sym)
self.endResetModel()
self.emitSourceChanged()
def rowCount(self, parent=QModelIndex()):
return len(self.symTab) + 1
def columnCount(self, parent=QModelIndex()):
return 4
def data(self, index, role=Qt.DisplayRole):
if not index:
return None
row, column = index.row(), index.column()
if role in (Qt.DisplayRole, Qt.EditRole):
if row >= len(self.symTab):
return None
sym = self.symTab[row]
if column == 0:
return sym.getName()
elif column == 1:
return sym.getOperatorString()
elif column == 2:
return sym.getTypeString()
else:
return sym.getComment()
elif role == Qt.BackgroundRole:
if row >= len(self.symTab) or\
self.symTab[row].isValid():
return QBrush(QColor("white"))
return QBrush(QColor("red"))
elif role in (Qt.ToolTipRole, Qt.WhatsThisRole):
return (
"The symbol name.\n(The name is case insensitive.)",
"The symbol address.\nFor example: M 0.0 or QW 0",
"The symbol data type.\nFor example: BOOL or INT",
"",
)[column]
return None
def headerData(self, section, orientation, role=Qt.DisplayRole):
if role != Qt.DisplayRole:
return None
if orientation == Qt.Horizontal:
return ("Symbol", "Address", "Data type", "Comment")[section]
else:
if section >= len(self.symTab):
return "new"
return "%d" % (section + 1)
def setData(self, index, value, role=Qt.EditRole):
if not index:
return False
if role == Qt.EditRole:
row, column = index.row(), index.column()
if row >= len(self.symTab):
nameBase = name = "__new_symbol_%d" % len(self.symTab)
i = 0
while name in self.symTab:
name = nameBase + "_" + str(i)
i += 1
sym = Symbol(name = name)
try:
self.symTab.add(sym)
except AwlSimError as e:
return False
self.rowsInserted.emit(QModelIndex(),
len(self.symTab),
len(self.symTab))
else:
sym = self.symTab[row]
try:
if column == 0:
sym.setName(value.strip())
elif column == 1:
sym.setOperatorString(value)
elif column == 2:
sym.setTypeString(value)
else:
sym.setComment(value.strip())
except AwlSimError as e:
MessageBox.handleAwlSimError(None,
"Invalid symbol information", e)
return False
self.emitSourceChanged()
return True
return False
def flags(self, index):
if not index:
return Qt.ItemIsEnabled
return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable
def getSource(self):
if self.__needSourceUpdate:
self.__updateSource()
return self.__source
def __updateSource(self):
try:
self.__source.sourceBytes = self.symTab.toASC()
except AwlSimError as e:
MessageBox.handleAwlSimError(None,
"Symbol table contains invalid characters", e)
return
self.__needSourceUpdate = False
def setSource(self, newSource):
self.beginResetModel()
try:
self.symTab = SymbolTable()
self.__source = newSource.dup()
self.__source.sourceBytes = b""
self.symTab = SymTabParser.parseData(newSource.sourceBytes)
except AwlSimError as e:
MessageBox.handleAwlSimError(None,
"Could not parse symbol table information", e)
finally:
self.endResetModel()
self.__needSourceUpdate = True
class SymTabView(QTableView):
# Signal: Keyboard focus in/out event.
focusChanged = Signal(bool)
def __init__(self, parent=None):
QTableView.__init__(self, parent)
if isQt4:
self.verticalHeader().setMovable(True)
else:
self.verticalHeader().setSectionsMovable(True)
self.verticalHeader().sectionMoved.connect(self.__rowMoved)
self.pressed.connect(self.__handleMousePress)
def __rebuild(self):
model = self.model()
yscroll = self.verticalScrollBar().value()
xscroll = self.horizontalScrollBar().value()
self.setModel(None)
self.setModel(model)
self.verticalScrollBar().setValue(yscroll)
self.horizontalScrollBar().setValue(xscroll)
def __rowMoved(self, logicalIndex, oldVisualIndex, newVisualIndex):
self.model().moveSymbol(oldVisualIndex, newVisualIndex)
self.__rebuild()
def resizeEvent(self, ev):
QTableView.resizeEvent(self, ev)
hdr = self.horizontalHeader()
if hdr.sectionSize(0) < 150:
hdr.resizeSection(0, 150)
if hdr.sectionSize(3) < 200:
hdr.resizeSection(3, 200)
def deleteSym(self, index=None):
if not index:
index = self.currentIndex()
if not index:
return
self.model().deleteSymbol(index.row())
def __handleMousePress(self, index):
btns = QApplication.mouseButtons()
if btns & Qt.RightButton:
pass#TODO context menu
def keyPressEvent(self, ev):
QTableView.keyPressEvent(self, ev)
if ev.key() == Qt.Key_Delete:
self.deleteSym()
def focusInEvent(self, ev):
QTableView.focusInEvent(self, ev)
self.focusChanged.emit(True)
def focusOutEvent(self, ev):
QTableView.focusOutEvent(self, ev)
self.focusChanged.emit(False)
def setSymTab(self, symTab):
self.setModel(SymTabModel(symTab))
def getSymTab(self):
return self.model().getSymTab()
def getSource(self):
return self.model().getSource()
def setSource(self, newSource):
return self.model().setSource(newSource)
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