/usr/lib/python3/dist-packages/PyQt4/uic/uiparser.py is in python3-pyqt4 4.11.2+dfsg-1.
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##
## Copyright (C) 2014 Riverbank Computing Limited.
## Copyright (C) 2006 Thorsten Marek.
## All right reserved.
##
## This file is part of PyQt.
##
## You may use this file under the terms of the GPL v2 or the revised BSD
## license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of the Riverbank Computing Limited nor the names
## of its contributors may be used to endorse or promote products
## derived from this software without specific prior written
## permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
#############################################################################
import sys
import logging
import os.path
import re
try:
from xml.etree.ElementTree import parse, SubElement
except ImportError:
try:
from ElementTree import parse, SubElement
except ImportError:
try:
from elementtree.ElementTree import parse, SubElement
except ImportError:
from PyQt4.elementtree.ElementTree import parse, SubElement
from PyQt4.uic.exceptions import NoSuchWidgetError
from PyQt4.uic.objcreator import QObjectCreator
from PyQt4.uic.properties import Properties
logger = logging.getLogger(__name__)
DEBUG = logger.debug
if sys.version_info < (2,4,0):
def reversed(seq):
for i in xrange(len(seq)-1, -1, -1):
yield seq[i]
QtCore = None
QtGui = None
def _parse_alignment(alignment):
""" Convert a C++ alignment to the corresponding flags. """
align_flags = None
for qt_align in alignment.split('|'):
_, qt_align = qt_align.split('::')
align = getattr(QtCore.Qt, qt_align)
if align_flags is None:
align_flags = align
else:
align_flags |= align
return align_flags
def _layout_position(elem):
""" Return either (), (alignment), (row, column, rowspan, colspan) or
(row, column, rowspan, colspan, alignment) depending on the type of layout
and its configuration. The result will be suitable to use as arguments to
the layout.
"""
row = elem.attrib.get('row')
column = elem.attrib.get('column')
alignment = elem.attrib.get('alignment')
# See if it is a box layout.
if row is None or column is None:
if alignment is None:
return ()
return (_parse_alignment(alignment), )
# It must be a grid or a form layout.
row = int(row)
column = int(column)
rowspan = int(elem.attrib.get('rowspan', 1))
colspan = int(elem.attrib.get('colspan', 1))
if alignment is None:
return (row, column, rowspan, colspan)
return (row, column, rowspan, colspan, _parse_alignment(alignment))
class WidgetStack(list):
topwidget = None
def push(self, item):
DEBUG("push %s %s" % (item.metaObject().className(),
item.objectName()))
self.append(item)
if isinstance(item, QtGui.QWidget):
self.topwidget = item
def popLayout(self):
layout = list.pop(self)
DEBUG("pop layout %s %s" % (layout.metaObject().className(),
layout.objectName()))
return layout
def popWidget(self):
widget = list.pop(self)
DEBUG("pop widget %s %s" % (widget.metaObject().className(),
widget.objectName()))
for item in reversed(self):
if isinstance(item, QtGui.QWidget):
self.topwidget = item
break
else:
self.topwidget = None
DEBUG("new topwidget %s" % (self.topwidget,))
return widget
def peek(self):
return self[-1]
def topIsLayout(self):
return isinstance(self[-1], QtGui.QLayout)
class ButtonGroup(object):
""" Encapsulate the configuration of a button group and its implementation.
"""
def __init__(self):
""" Initialise the button group. """
self.exclusive = True
self.object = None
class UIParser(object):
def __init__(self, QtCoreModule, QtGuiModule, creatorPolicy):
self.factory = QObjectCreator(creatorPolicy)
self.wprops = Properties(self.factory, QtCoreModule, QtGuiModule)
global QtCore, QtGui
QtCore = QtCoreModule
QtGui = QtGuiModule
self.reset()
def uniqueName(self, name):
"""UIParser.uniqueName(string) -> string
Create a unique name from a string.
>>> p = UIParser(QtCore, QtGui)
>>> p.uniqueName("foo")
'foo'
>>> p.uniqueName("foo")
'foo1'
"""
try:
suffix = self.name_suffixes[name]
except KeyError:
self.name_suffixes[name] = 0
return name
suffix += 1
self.name_suffixes[name] = suffix
return "%s%i" % (name, suffix)
def reset(self):
try: self.wprops.reset()
except AttributeError: pass
self.toplevelWidget = None
self.stack = WidgetStack()
self.name_suffixes = {}
self.defaults = {"spacing": 6, "margin": 0}
self.actions = []
self.currentActionGroup = None
self.resources = []
self.button_groups = {}
self.layout_widget = False
def setupObject(self, clsname, parent, branch, is_attribute = True):
name = self.uniqueName(branch.attrib.get("name") or clsname[1:].lower())
if parent is None:
args = ()
else:
args = (parent, )
obj = self.factory.createQObject(clsname, name, args, is_attribute)
self.wprops.setProperties(obj, branch)
obj.setObjectName(name)
if is_attribute:
setattr(self.toplevelWidget, name, obj)
return obj
def getProperty(self, elem, name):
for prop in elem.findall('property'):
if prop.attrib['name'] == name:
return prop
return None
def createWidget(self, elem):
self.column_counter = 0
self.row_counter = 0
self.item_nr = 0
self.itemstack = []
self.sorting_enabled = None
widget_class = elem.attrib['class'].replace('::', '.')
if widget_class == 'Line':
widget_class = 'QFrame'
# Ignore the parent if it is a container.
parent = self.stack.topwidget
if isinstance(parent, (QtGui.QDockWidget, QtGui.QMdiArea,
QtGui.QScrollArea, QtGui.QStackedWidget,
QtGui.QToolBox, QtGui.QTabWidget,
QtGui.QWizard)):
parent = None
# See if this is a layout widget.
if widget_class == 'QWidget':
if parent is not None:
if not isinstance(parent, QtGui.QMainWindow):
self.layout_widget = True
self.stack.push(self.setupObject(widget_class, parent, elem))
if isinstance(self.stack.topwidget, QtGui.QTableWidget):
if self.getProperty(elem, 'columnCount') is None:
self.stack.topwidget.setColumnCount(len(elem.findall("column")))
if self.getProperty(elem, 'rowCount') is None:
self.stack.topwidget.setRowCount(len(elem.findall("row")))
self.traverseWidgetTree(elem)
widget = self.stack.popWidget()
self.layout_widget = False
if isinstance(widget, QtGui.QTreeView):
self.handleHeaderView(elem, "header", widget.header())
elif isinstance(widget, QtGui.QTableView):
self.handleHeaderView(elem, "horizontalHeader",
widget.horizontalHeader())
self.handleHeaderView(elem, "verticalHeader",
widget.verticalHeader())
elif isinstance(widget, QtGui.QAbstractButton):
bg_i18n = self.wprops.getAttribute(elem, "buttonGroup")
if bg_i18n is not None:
# This should be handled properly in case the problem arises
# elsewhere as well.
try:
# We are compiling the .ui file.
bg_name = bg_i18n.string
except AttributeError:
# We are loading the .ui file.
bg_name = bg_i18n
bg = self.button_groups[bg_name]
if bg.object is None:
bg.object = self.factory.createQObject("QButtonGroup",
bg_name, (self.toplevelWidget, ))
setattr(self.toplevelWidget, bg_name, bg.object)
bg.object.setObjectName(bg_name)
if not bg.exclusive:
bg.object.setExclusive(False)
bg.object.addButton(widget)
if self.sorting_enabled is not None:
widget.setSortingEnabled(self.sorting_enabled)
self.sorting_enabled = None
if self.stack.topIsLayout():
lay = self.stack.peek()
lp = elem.attrib['layout-position']
if isinstance(lay, QtGui.QFormLayout):
lay.setWidget(lp[0], self._form_layout_role(lp), widget)
else:
lay.addWidget(widget, *lp)
topwidget = self.stack.topwidget
if isinstance(topwidget, QtGui.QToolBox):
icon = self.wprops.getAttribute(elem, "icon")
if icon is not None:
topwidget.addItem(widget, icon, self.wprops.getAttribute(elem, "label"))
else:
topwidget.addItem(widget, self.wprops.getAttribute(elem, "label"))
tooltip = self.wprops.getAttribute(elem, "toolTip")
if tooltip is not None:
topwidget.setItemToolTip(topwidget.indexOf(widget), tooltip)
elif isinstance(topwidget, QtGui.QTabWidget):
icon = self.wprops.getAttribute(elem, "icon")
if icon is not None:
topwidget.addTab(widget, icon, self.wprops.getAttribute(elem, "title"))
else:
topwidget.addTab(widget, self.wprops.getAttribute(elem, "title"))
tooltip = self.wprops.getAttribute(elem, "toolTip")
if tooltip is not None:
topwidget.setTabToolTip(topwidget.indexOf(widget), tooltip)
elif isinstance(topwidget, QtGui.QWizard):
topwidget.addPage(widget)
elif isinstance(topwidget, QtGui.QStackedWidget):
topwidget.addWidget(widget)
elif isinstance(topwidget, (QtGui.QDockWidget, QtGui.QScrollArea)):
topwidget.setWidget(widget)
elif isinstance(topwidget, QtGui.QMainWindow):
if type(widget) == QtGui.QWidget:
topwidget.setCentralWidget(widget)
elif isinstance(widget, QtGui.QToolBar):
tbArea = self.wprops.getAttribute(elem, "toolBarArea")
if tbArea is None:
topwidget.addToolBar(widget)
else:
topwidget.addToolBar(tbArea, widget)
tbBreak = self.wprops.getAttribute(elem, "toolBarBreak")
if tbBreak:
topwidget.insertToolBarBreak(widget)
elif isinstance(widget, QtGui.QMenuBar):
topwidget.setMenuBar(widget)
elif isinstance(widget, QtGui.QStatusBar):
topwidget.setStatusBar(widget)
elif isinstance(widget, QtGui.QDockWidget):
dwArea = self.wprops.getAttribute(elem, "dockWidgetArea")
topwidget.addDockWidget(QtCore.Qt.DockWidgetArea(dwArea),
widget)
def handleHeaderView(self, elem, name, header):
value = self.wprops.getAttribute(elem, name + "Visible")
if value is not None:
header.setVisible(value)
value = self.wprops.getAttribute(elem, name + "CascadingSectionResizes")
if value is not None:
header.setCascadingSectionResizes(value)
value = self.wprops.getAttribute(elem, name + "DefaultSectionSize")
if value is not None:
header.setDefaultSectionSize(value)
value = self.wprops.getAttribute(elem, name + "HighlightSections")
if value is not None:
header.setHighlightSections(value)
value = self.wprops.getAttribute(elem, name + "MinimumSectionSize")
if value is not None:
header.setMinimumSectionSize(value)
value = self.wprops.getAttribute(elem, name + "ShowSortIndicator")
if value is not None:
header.setSortIndicatorShown(value)
value = self.wprops.getAttribute(elem, name + "StretchLastSection")
if value is not None:
header.setStretchLastSection(value)
def createSpacer(self, elem):
width = elem.findtext("property/size/width")
height = elem.findtext("property/size/height")
if width is None or height is None:
size_args = ()
else:
size_args = (int(width), int(height))
sizeType = self.wprops.getProperty(elem, "sizeType",
QtGui.QSizePolicy.Expanding)
policy = (QtGui.QSizePolicy.Minimum, sizeType)
if self.wprops.getProperty(elem, "orientation") == QtCore.Qt.Horizontal:
policy = policy[1], policy[0]
spacer = self.factory.createQObject("QSpacerItem",
self.uniqueName("spacerItem"), size_args + policy,
is_attribute=False)
if self.stack.topIsLayout():
lay = self.stack.peek()
lp = elem.attrib['layout-position']
if isinstance(lay, QtGui.QFormLayout):
lay.setItem(lp[0], self._form_layout_role(lp), spacer)
else:
lay.addItem(spacer, *lp)
def createLayout(self, elem):
# Qt v4.3 introduced setContentsMargins() and separate values for each
# of the four margins which are specified as separate properties. This
# doesn't really fit the way we parse the tree (why aren't the values
# passed as attributes of a single property?) so we create a new
# property and inject it. However, if we find that they have all been
# specified and have the same value then we inject a different property
# that is compatible with older versions of Qt.
left = self.wprops.getProperty(elem, 'leftMargin', -1)
top = self.wprops.getProperty(elem, 'topMargin', -1)
right = self.wprops.getProperty(elem, 'rightMargin', -1)
bottom = self.wprops.getProperty(elem, 'bottomMargin', -1)
# Count the number of properties and if they had the same value.
def comp_property(m, so_far=-2, nr=0):
if m >= 0:
nr += 1
if so_far == -2:
so_far = m
elif so_far != m:
so_far = -1
return so_far, nr
margin, nr_margins = comp_property(left)
margin, nr_margins = comp_property(top, margin, nr_margins)
margin, nr_margins = comp_property(right, margin, nr_margins)
margin, nr_margins = comp_property(bottom, margin, nr_margins)
if nr_margins > 0:
if nr_margins == 4 and margin >= 0:
# We can inject the old margin property.
me = SubElement(elem, 'property', name='margin')
SubElement(me, 'number').text = str(margin)
else:
# We have to inject the new internal property.
cme = SubElement(elem, 'property', name='pyuicContentsMargins')
SubElement(cme, 'number').text = str(left)
SubElement(cme, 'number').text = str(top)
SubElement(cme, 'number').text = str(right)
SubElement(cme, 'number').text = str(bottom)
elif self.layout_widget:
margin = self.wprops.getProperty(elem, 'margin', -1)
if margin < 0:
# The layout's of layout widgets have no margin.
me = SubElement(elem, 'property', name='margin')
SubElement(me, 'number').text = '0'
# In case there are any nested layouts.
self.layout_widget = False
# We do the same for setHorizontalSpacing() and setVerticalSpacing().
horiz = self.wprops.getProperty(elem, 'horizontalSpacing', -1)
vert = self.wprops.getProperty(elem, 'verticalSpacing', -1)
if horiz >= 0 or vert >= 0:
# We inject the new internal property.
cme = SubElement(elem, 'property', name='pyuicSpacing')
SubElement(cme, 'number').text = str(horiz)
SubElement(cme, 'number').text = str(vert)
classname = elem.attrib["class"]
if self.stack.topIsLayout():
parent = None
else:
parent = self.stack.topwidget
if "name" not in elem.attrib:
elem.attrib["name"] = classname[1:].lower()
self.stack.push(self.setupObject(classname, parent, elem))
self.traverseWidgetTree(elem)
layout = self.stack.popLayout()
self.configureLayout(elem, layout)
if self.stack.topIsLayout():
top_layout = self.stack.peek()
lp = elem.attrib['layout-position']
if isinstance(top_layout, QtGui.QFormLayout):
top_layout.setLayout(lp[0], self._form_layout_role(lp), layout)
else:
top_layout.addLayout(layout, *lp)
def configureLayout(self, elem, layout):
if isinstance(layout, QtGui.QGridLayout):
self.setArray(elem, 'columnminimumwidth',
layout.setColumnMinimumWidth)
self.setArray(elem, 'rowminimumheight',
layout.setRowMinimumHeight)
self.setArray(elem, 'columnstretch', layout.setColumnStretch)
self.setArray(elem, 'rowstretch', layout.setRowStretch)
elif isinstance(layout, QtGui.QBoxLayout):
self.setArray(elem, 'stretch', layout.setStretch)
def setArray(self, elem, name, setter):
array = elem.attrib.get(name)
if array:
for idx, value in enumerate(array.split(',')):
value = int(value)
if value > 0:
setter(idx, value)
def disableSorting(self, w):
if self.item_nr == 0:
self.sorting_enabled = self.factory.invoke("__sortingEnabled",
w.isSortingEnabled)
w.setSortingEnabled(False)
def handleItem(self, elem):
if self.stack.topIsLayout():
elem[0].attrib['layout-position'] = _layout_position(elem)
self.traverseWidgetTree(elem)
else:
w = self.stack.topwidget
if isinstance(w, QtGui.QComboBox):
text = self.wprops.getProperty(elem, "text")
icon = self.wprops.getProperty(elem, "icon")
if icon:
w.addItem(icon, '')
else:
w.addItem('')
w.setItemText(self.item_nr, text)
elif isinstance(w, QtGui.QListWidget):
self.disableSorting(w)
item = self.createWidgetItem('QListWidgetItem', elem, w.item,
self.item_nr)
w.addItem(item)
elif isinstance(w, QtGui.QTreeWidget):
if self.itemstack:
parent, _ = self.itemstack[-1]
_, nr_in_root = self.itemstack[0]
else:
parent = w
nr_in_root = self.item_nr
item = self.factory.createQObject("QTreeWidgetItem",
"item_%d" % len(self.itemstack), (parent, ), False)
if self.item_nr == 0 and not self.itemstack:
self.sorting_enabled = self.factory.invoke("__sortingEnabled", w.isSortingEnabled)
w.setSortingEnabled(False)
self.itemstack.append((item, self.item_nr))
self.item_nr = 0
# We have to access the item via the tree when setting the
# text.
titm = w.topLevelItem(nr_in_root)
for child, nr_in_parent in self.itemstack[1:]:
titm = titm.child(nr_in_parent)
column = -1
for prop in elem.findall('property'):
c_prop = self.wprops.convert(prop)
c_prop_name = prop.attrib['name']
if c_prop_name == 'text':
column += 1
if c_prop:
titm.setText(column, c_prop)
elif c_prop_name == 'statusTip':
item.setStatusTip(column, c_prop)
elif c_prop_name == 'toolTip':
item.setToolTip(column, c_prop)
elif c_prop_name == 'whatsThis':
item.setWhatsThis(column, c_prop)
elif c_prop_name == 'font':
item.setFont(column, c_prop)
elif c_prop_name == 'icon':
item.setIcon(column, c_prop)
elif c_prop_name == 'background':
item.setBackground(column, c_prop)
elif c_prop_name == 'foreground':
item.setForeground(column, c_prop)
elif c_prop_name == 'flags':
item.setFlags(c_prop)
elif c_prop_name == 'checkState':
item.setCheckState(column, c_prop)
self.traverseWidgetTree(elem)
_, self.item_nr = self.itemstack.pop()
elif isinstance(w, QtGui.QTableWidget):
row = int(elem.attrib['row'])
col = int(elem.attrib['column'])
self.disableSorting(w)
item = self.createWidgetItem('QTableWidgetItem', elem, w.item,
row, col)
w.setItem(row, col, item)
self.item_nr += 1
def addAction(self, elem):
self.actions.append((self.stack.topwidget, elem.attrib["name"]))
@staticmethod
def any_i18n(*args):
""" Return True if any argument appears to be an i18n string. """
for a in args:
if a is not None and not isinstance(a, str):
return True
return False
def createWidgetItem(self, item_type, elem, getter, *getter_args):
""" Create a specific type of widget item. """
item = self.factory.createQObject(item_type, "item", (), False)
props = self.wprops
# Note that not all types of widget items support the full set of
# properties.
text = props.getProperty(elem, 'text')
status_tip = props.getProperty(elem, 'statusTip')
tool_tip = props.getProperty(elem, 'toolTip')
whats_this = props.getProperty(elem, 'whatsThis')
if self.any_i18n(text, status_tip, tool_tip, whats_this):
self.factory.invoke("item", getter, getter_args)
if text:
item.setText(text)
if status_tip:
item.setStatusTip(status_tip)
if tool_tip:
item.setToolTip(tool_tip)
if whats_this:
item.setWhatsThis(whats_this)
text_alignment = props.getProperty(elem, 'textAlignment')
if text_alignment:
item.setTextAlignment(text_alignment)
font = props.getProperty(elem, 'font')
if font:
item.setFont(font)
icon = props.getProperty(elem, 'icon')
if icon:
item.setIcon(icon)
background = props.getProperty(elem, 'background')
if background:
item.setBackground(background)
foreground = props.getProperty(elem, 'foreground')
if foreground:
item.setForeground(foreground)
flags = props.getProperty(elem, 'flags')
if flags:
item.setFlags(flags)
check_state = props.getProperty(elem, 'checkState')
if check_state:
item.setCheckState(check_state)
return item
def addHeader(self, elem):
w = self.stack.topwidget
if isinstance(w, QtGui.QTreeWidget):
props = self.wprops
col = self.column_counter
text = props.getProperty(elem, 'text')
if text:
w.headerItem().setText(col, text)
status_tip = props.getProperty(elem, 'statusTip')
if status_tip:
w.headerItem().setStatusTip(col, status_tip)
tool_tip = props.getProperty(elem, 'toolTip')
if tool_tip:
w.headerItem().setToolTip(col, tool_tip)
whats_this = props.getProperty(elem, 'whatsThis')
if whats_this:
w.headerItem().setWhatsThis(col, whats_this)
text_alignment = props.getProperty(elem, 'textAlignment')
if text_alignment:
w.headerItem().setTextAlignment(col, text_alignment)
font = props.getProperty(elem, 'font')
if font:
w.headerItem().setFont(col, font)
icon = props.getProperty(elem, 'icon')
if icon:
w.headerItem().setIcon(col, icon)
background = props.getProperty(elem, 'background')
if background:
w.headerItem().setBackground(col, background)
foreground = props.getProperty(elem, 'foreground')
if foreground:
w.headerItem().setForeground(col, foreground)
self.column_counter += 1
elif isinstance(w, QtGui.QTableWidget):
if len(elem) != 0:
if elem.tag == 'column':
item = self.createWidgetItem('QTableWidgetItem', elem,
w.horizontalHeaderItem, self.column_counter)
w.setHorizontalHeaderItem(self.column_counter, item)
self.column_counter += 1
elif elem.tag == 'row':
item = self.createWidgetItem('QTableWidgetItem', elem,
w.verticalHeaderItem, self.row_counter)
w.setVerticalHeaderItem(self.row_counter, item)
self.row_counter += 1
def createAction(self, elem):
self.setupObject("QAction", self.currentActionGroup or self.toplevelWidget,
elem)
def createActionGroup(self, elem):
action_group = self.setupObject("QActionGroup", self.toplevelWidget, elem)
self.currentActionGroup = action_group
self.traverseWidgetTree(elem)
self.currentActionGroup = None
widgetTreeItemHandlers = {
"widget" : createWidget,
"addaction" : addAction,
"layout" : createLayout,
"spacer" : createSpacer,
"item" : handleItem,
"action" : createAction,
"actiongroup": createActionGroup,
"column" : addHeader,
"row" : addHeader,
}
def traverseWidgetTree(self, elem):
for child in iter(elem):
try:
handler = self.widgetTreeItemHandlers[child.tag]
except KeyError:
continue
handler(self, child)
def createUserInterface(self, elem):
# Get the names of the class and widget.
cname = elem.attrib["class"]
wname = elem.attrib["name"]
# If there was no widget name then derive it from the class name.
if not wname:
wname = cname
if wname.startswith("Q"):
wname = wname[1:]
wname = wname[0].lower() + wname[1:]
self.toplevelWidget = self.createToplevelWidget(cname, wname)
self.toplevelWidget.setObjectName(wname)
DEBUG("toplevel widget is %s",
self.toplevelWidget.metaObject().className())
self.wprops.setProperties(self.toplevelWidget, elem)
self.stack.push(self.toplevelWidget)
self.traverseWidgetTree(elem)
self.stack.popWidget()
self.addActions()
self.setBuddies()
self.setDelayedProps()
def addActions(self):
for widget, action_name in self.actions:
if action_name == "separator":
widget.addSeparator()
else:
DEBUG("add action %s to %s", action_name, widget.objectName())
action_obj = getattr(self.toplevelWidget, action_name)
if isinstance(action_obj, QtGui.QMenu):
widget.addAction(action_obj.menuAction())
elif not isinstance(action_obj, QtGui.QActionGroup):
widget.addAction(action_obj)
def setDelayedProps(self):
for widget, layout, setter, args in self.wprops.delayed_props:
if layout:
widget = widget.layout()
setter = getattr(widget, setter)
setter(args)
def setBuddies(self):
for widget, buddy in self.wprops.buddies:
DEBUG("%s is buddy of %s", buddy, widget.objectName())
try:
widget.setBuddy(getattr(self.toplevelWidget, buddy))
except AttributeError:
DEBUG("ERROR in ui spec: %s (buddy of %s) does not exist",
buddy, widget.objectName())
def classname(self, elem):
DEBUG("uiname is %s", elem.text)
name = elem.text
if name is None:
name = ""
self.uiname = name
self.wprops.uiname = name
self.setContext(name)
def setContext(self, context):
"""
Reimplemented by a sub-class if it needs to know the translation
context.
"""
pass
def readDefaults(self, elem):
self.defaults["margin"] = int(elem.attrib["margin"])
self.defaults["spacing"] = int(elem.attrib["spacing"])
def setTaborder(self, elem):
lastwidget = None
for widget_elem in elem:
widget = getattr(self.toplevelWidget, widget_elem.text)
if lastwidget is not None:
self.toplevelWidget.setTabOrder(lastwidget, widget)
lastwidget = widget
def readResources(self, elem):
"""
Read a "resources" tag and add the module to import to the parser's
list of them.
"""
for include in elem.getiterator("include"):
loc = include.attrib.get("location")
# Apply the convention for naming the Python files generated by
# pyrcc4.
if loc and loc.endswith('.qrc'):
mname = os.path.basename(loc[:-4] + self._resource_suffix)
if mname not in self.resources:
self.resources.append(mname)
def createConnections(self, elem):
def name2object(obj):
if obj == self.uiname:
return self.toplevelWidget
else:
return getattr(self.toplevelWidget, obj)
for conn in iter(elem):
QtCore.QObject.connect(name2object(conn.findtext("sender")),
QtCore.SIGNAL(conn.findtext("signal")),
self.factory.getSlot(name2object(conn.findtext("receiver")),
conn.findtext("slot").split("(")[0]))
QtCore.QMetaObject.connectSlotsByName(self.toplevelWidget)
def customWidgets(self, elem):
def header2module(header):
"""header2module(header) -> string
Convert paths to C++ header files to according Python modules
>>> header2module("foo/bar/baz.h")
'foo.bar.baz'
"""
if header.endswith(".h"):
header = header[:-2]
mpath = []
for part in header.split('/'):
# Ignore any empty parts or those that refer to the current
# directory.
if part not in ('', '.'):
if part == '..':
# We should allow this for Python3.
raise SyntaxError("custom widget header file name may not contain '..'.")
mpath.append(part)
return '.'.join(mpath)
for custom_widget in iter(elem):
classname = custom_widget.findtext("class")
if classname.startswith("Q3"):
raise NoSuchWidgetError(classname)
self.factory.addCustomWidget(classname,
custom_widget.findtext("extends") or "QWidget",
header2module(custom_widget.findtext("header")))
def createToplevelWidget(self, classname, widgetname):
raise NotImplementedError
def buttonGroups(self, elem):
for button_group in iter(elem):
if button_group.tag == 'buttongroup':
bg_name = button_group.attrib['name']
bg = ButtonGroup()
self.button_groups[bg_name] = bg
prop = self.getProperty(button_group, 'exclusive')
if prop is not None:
if prop.findtext('bool') == 'false':
bg.exclusive = False
# finalize will be called after the whole tree has been parsed and can be
# overridden.
def finalize(self):
pass
def parse(self, filename, resource_suffix, base_dir=''):
self.wprops.set_base_dir(base_dir)
self._resource_suffix = resource_suffix
# The order in which the different branches are handled is important.
# The widget tree handler relies on all custom widgets being known, and
# in order to create the connections, all widgets have to be populated.
branchHandlers = (
("layoutdefault", self.readDefaults),
("class", self.classname),
("buttongroups", self.buttonGroups),
("customwidgets", self.customWidgets),
("widget", self.createUserInterface),
("connections", self.createConnections),
("tabstops", self.setTaborder),
("resources", self.readResources),
)
document = parse(filename)
version = document.getroot().attrib["version"]
DEBUG("UI version is %s" % (version,))
# Right now, only version 4.0 is supported.
assert version in ("4.0",)
for tagname, actor in branchHandlers:
elem = document.find(tagname)
if elem is not None:
actor(elem)
self.finalize()
w = self.toplevelWidget
self.reset()
return w
@staticmethod
def _form_layout_role(layout_position):
if layout_position[3] > 1:
role = QtGui.QFormLayout.SpanningRole
elif layout_position[1] == 1:
role = QtGui.QFormLayout.FieldRole
else:
role = QtGui.QFormLayout.LabelRole
return role
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