def __init__(self, group, ui, suppress_label=False):
"""Initialise the object.
"""
# Get the contents of the group:
content = group.get_content()
# Save these for other methods.
self.group = group
self.ui = ui
if group.orientation == 'horizontal':
self.direction = QtGui.QBoxLayout.LeftToRight
else:
self.direction = QtGui.QBoxLayout.TopToBottom
# outer is the top-level widget or layout that will eventually be
# returned. sub is the QTabWidget or QToolBox corresponding to any
# 'tabbed' or 'fold' layout. It is only used to collapse nested
# widgets. inner is the object (not necessarily a layout) that new
# controls should be added to.
outer = sub = inner = None
# Get the group label.
if suppress_label:
label = ""
else:
label = group.label
# Create a border if requested.
if group.show_border:
outer = QtGui.QGroupBox(label)
inner = QtGui.QBoxLayout(self.direction, outer)
elif label != "":
outer = inner = QtGui.QBoxLayout(self.direction)
inner.addWidget(ui_panel.heading_text(None, text=label).control)
# Add the layout specific content.
if len(content) == 0:
pass
elif group.layout == 'flow':
raise NotImplementedError, "'the 'flow' layout isn't implemented"
elif group.layout == 'split':
# Create the splitter.
splitter = ui_panel._GroupSplitter(group)
splitter.setOpaqueResize(False) # Mimic wx backend resize behavior
if self.direction == QtGui.QBoxLayout.TopToBottom:
splitter.setOrientation(QtCore.Qt.Vertical)
# Make sure the splitter will expand to fill available space
policy = splitter.sizePolicy()
policy.setHorizontalStretch(50)
policy.setVerticalStretch(50)
if group.orientation == 'horizontal':
policy.setVerticalPolicy(QtGui.QSizePolicy.Expanding)
else:
policy.setHorizontalPolicy(QtGui.QSizePolicy.Expanding)
splitter.setSizePolicy(policy)
if outer is None:
outer = splitter
else:
inner.addWidget(splitter)
# Create an editor.
editor = ui_panel.SplitterGroupEditor(control=outer, splitter=splitter, ui=ui)
self._setup_editor(group, editor)
self._add_splitter_items(content, splitter)
elif group.layout in ('tabbed', 'fold'):
# Create the TabWidget or ToolBox.
if group.layout == 'tabbed':
sub = QtGui.QTabWidget()
sub.setProperty("traits_tabbed_group", True)
else:
sub = QtGui.QToolBox()
# Give tab/tool widget stretch factor equivalent to default stretch
# factory for a resizeable item. See end of '_add_items'.
policy = sub.sizePolicy()
policy.setHorizontalStretch(50)
policy.setVerticalStretch(50)
sub.setSizePolicy(policy)
ui_panel._fill_panel(sub, content, self.ui, self._add_page_item)
if outer is None:
outer = sub
else:
inner.addWidget(sub)
# Create an editor.
editor = ui_panel.TabbedFoldGroupEditor(container=sub, control=outer, ui=ui)
self._setup_editor(group, editor)
else:
# See if we need to control the visual appearance of the group.
if group.visible_when != '' or group.enabled_when != '':
# Make sure that outer is a widget and inner is a layout.
# Hiding a layout is not properly supported by Qt (the
# workaround in ``traitsui.qt4.editor._visible_changed_helper``
# often leaves undesirable blank space).
if outer is None:
outer = inner = QtGui.QBoxLayout(self.direction)
if isinstance(outer, QtGui.QLayout):
widget = QtGui.QWidget()
widget.setLayout(outer)
outer = widget
# Create an editor.
self._setup_editor(group, ui_panel.GroupEditor(control=outer))
if isinstance(content[0], Group):
layout = self._add_groups(content, inner)
else:
layout = self._add_items(content, inner)
layout.setAlignment(QtCore.Qt.AlignLeft | QtCore.Qt.AlignTop)
if outer is None:
outer = layout
elif layout is not inner:
inner.addLayout(layout)
if group.style_sheet:
if isinstance(outer, QtGui.QLayout):
inner = outer
outer = QtGui.QWidget()
outer.setLayout(inner)
# ensure this is not empty group
if isinstance(outer, QtGui.QWidget):
outer.setStyleSheet(group.style_sheet)
# Publish the top-level widget, layout or None.
self.control = outer
# Publish the optional sub-control.
self.sub_control = sub
def _add_items(self, content, outer=None):
"""Adds a list of Item objects, creating a layout if needed. Return
the outermost layout.
"""
# Get local references to various objects we need:
ui = self.ui
info = ui.info
handler = ui.handler
group = self.group
show_left = group.show_left
columns = group.columns
# See if a label is needed.
show_labels = False
for item in content:
show_labels |= item.show_label
# See if a grid layout is needed.
if show_labels or columns > 1:
inner = QtGui.QGridLayout()
if outer is None:
outer = inner
else:
outer.addLayout(inner)
row = 0
if show_left:
label_alignment = QtCore.Qt.AlignRight
else:
label_alignment = QtCore.Qt.AlignLeft
else:
# Use the existing layout if there is one.
if outer is None:
outer = QtGui.QBoxLayout(self.direction)
inner = outer
row = -1
label_alignment = 0
# Process each Item in the list:
col = -1
for item in content:
# Keep a track of the current logical row and column unless the
# layout is not a grid.
col += 1
if row >= 0 and col >= columns:
col = 0
row += 1
# Get the name in order to determine its type:
name = item.name
# Check if is a label:
if name == '':
label = item.label
if label != "":
# Create the label widget.
if item.style == 'simple':
label = QtGui.QLabel(label)
else:
label = ui_panel.heading_text(None, text=label).control
self._add_widget(inner, label, row, col, show_labels)
if item.emphasized:
self._add_emphasis(label)
# Continue on to the next Item in the list:
continue
# Check if it is a separator:
if name == '_':
cols = columns
# See if the layout is a grid.
if row >= 0:
# Move to the start of the next row if necessary.
if col > 0:
col = 0
row += 1
# Skip the row we are about to do.
row += 1
# Allow for the columns.
if show_labels:
cols *= 2
for i in range(cols):
line = QtGui.QFrame()
if self.direction == QtGui.QBoxLayout.LeftToRight:
# Add a vertical separator:
line.setFrameShape(QtGui.QFrame.VLine)
if row < 0:
inner.addWidget(line)
else:
inner.addWidget(line, i, row)
else:
# Add a horizontal separator:
line.setFrameShape(QtGui.QFrame.HLine)
if row < 0:
inner.addWidget(line)
else:
inner.addWidget(line, row, i)
line.setFrameShadow(QtGui.QFrame.Sunken)
# Continue on to the next Item in the list:
continue
# Convert a blank to a 5 pixel spacer:
if name == ' ':
name = '5'
# Check if it is a spacer:
if ui_panel.all_digits.match(name):
# If so, add the appropriate amount of space to the layout:
n = int(name)
if self.direction == QtGui.QBoxLayout.LeftToRight:
# Add a horizontal spacer:
spacer = QtGui.QSpacerItem(n, 1)
else:
# Add a vertical spacer:
spacer = QtGui.QSpacerItem(1, n)
self._add_widget(inner, spacer, row, col, show_labels)
# Continue on to the next Item in the list:
continue
# Otherwise, it must be a trait Item:
object = eval(item.object_, globals(), ui.context)
trait = object.base_trait(name)
desc = trait.desc or ''
# Get the editor factory associated with the Item:
editor_factory = item.editor
if editor_factory is None:
editor_factory = trait.get_editor().set(**item.editor_args)
# If still no editor factory found, use a default text editor:
if editor_factory is None:
from traitsui.qt4.text_editor import ToolkitEditorFactory
editor_factory = ToolkitEditorFactory()
# If the item has formatting traits set them in the editor
# factory:
if item.format_func is not None:
editor_factory.format_func = item.format_func
if item.format_str != '':
editor_factory.format_str = item.format_str
# If the item has an invalid state extended trait name, set it
# in the editor factory:
if item.invalid != '':
editor_factory.invalid = item.invalid
# Create the requested type of editor from the editor factory:
factory_method = getattr(editor_factory, item.style + '_editor')
editor = factory_method(
ui, object, name, item.tooltip, None
).set(item=item, object_name=item.object)
# Tell the editor to actually build the editing widget. Note that
# "inner" is a layout. This shouldn't matter as individual editors
# shouldn't be using it as a parent anyway. The important thing is
# that it is not None (otherwise the main TraitsUI code can change
# the "kind" of the created UI object).
editor.prepare(inner)
control = editor.control
if item.style_sheet:
control.setStyleSheet(item.style_sheet)
# Set the initial 'enabled' state of the editor from the factory:
editor.enabled = editor_factory.enabled
# Handle any label.
if item.show_label:
label = self._create_label(item, ui, desc)
self._add_widget(inner, label, row, col, show_labels,
label_alignment)
else:
label = None
editor.label_control = label
# Add emphasis to the editor control if requested:
if item.emphasized:
self._add_emphasis(control)
# Give the editor focus if it requested it:
if item.has_focus:
control.setFocus()
# Set the correct size on the control, as specified by the user:
stretch = 0
item_width = item.width
item_height = item.height
if (item_width != -1) or (item_height != -1):
is_horizontal = (self.direction == QtGui.QBoxLayout.LeftToRight)
min_size = control.minimumSizeHint()
width = min_size.width()
height = min_size.height()
force_width = False
force_height = False
if (0.0 < item_width <= 1.0) and is_horizontal:
stretch = int(100 * item_width)
item_width = int(item_width)
if item_width < -1:
item_width = -item_width
force_width = True
else:
item_width = max(item_width, width)
if (0.0 < item_height <= 1.0) and (not is_horizontal):
stretch = int(100 * item_height)
item_height = int(item_height)
if item_height < -1:
item_height = -item_height
force_height = True
else:
item_height = max(item_height, height)
control.setMinimumWidth(max(item_width, 0))
control.setMinimumHeight(max(item_height, 0))
if (stretch == 0 or not is_horizontal) and force_width:
control.setMaximumWidth(item_width)
if (stretch == 0 or is_horizontal) and force_height:
control.setMaximumHeight(item_height)
# Set size and stretch policies
self._set_item_size_policy(editor, item, label, stretch)
# Add the created editor control to the layout
# FIXME: Need to decide what to do about border_size and padding
self._add_widget(inner, control, row, col, show_labels)
# ---- Update the UI object
# Bind the editor into the UIInfo object name space so it can be
# referred to by a Handler while the user interface is active:
id = item.id or name
info.bind(id, editor, item.id)
self.ui._scrollable |= editor.scrollable
# Also, add the editors to the list of editors used to construct
# the user interface:
ui._editors.append(editor)
# If the handler wants to be notified when the editor is created,
# add it to the list of methods to be called when the UI is
# complete:
defined = getattr(handler, id + '_defined', None)
if defined is not None:
ui.add_defined(defined)
# If the editor is conditionally visible, add the visibility
# 'expression' and the editor to the UI object's list of monitored
# objects:
if item.visible_when != '':
ui.add_visible(item.visible_when, editor)
# If the editor is conditionally enabled, add the enabling
# 'expression' and the editor to the UI object's list of monitored
# objects:
if item.enabled_when != '':
ui.add_enabled(item.enabled_when, editor)
return outer
def __init__(self, group, ui, suppress_label=False):
"""Initialise the object.
"""
# Get the contents of the group:
content = group.get_content()
# Save these for other methods.
self.group = group
self.ui = ui
if group.orientation == "horizontal":
self.direction = QtGui.QBoxLayout.LeftToRight
else:
self.direction = QtGui.QBoxLayout.TopToBottom
# outer is the top-level widget or layout that will eventually be
# returned. sub is the QTabWidget or QToolBox corresponding to any
# 'tabbed' or 'fold' layout. It is only used to collapse nested
# widgets. inner is the object (not necessarily a layout) that new
# controls should be added to.
outer = sub = inner = None
# Get the group label.
if suppress_label:
label = ""
else:
label = group.label
# Create a border if requested.
if group.show_border:
outer = QtGui.QGroupBox(label)
inner = QtGui.QBoxLayout(self.direction, outer)
elif label != "":
outer = inner = QtGui.QBoxLayout(self.direction)
inner.addWidget(ui_panel.heading_text(None, text=label).control)
# Add the layout specific content.
if len(content) == 0:
pass
elif group.layout == "flow":
raise NotImplementedError, "'the 'flow' layout isn't implemented"
elif group.layout == "split":
# Create the splitter.
splitter = ui_panel._GroupSplitter(group)
splitter.setOpaqueResize(False) # Mimic wx backend resize behavior
if self.direction == QtGui.QBoxLayout.TopToBottom:
splitter.setOrientation(QtCore.Qt.Vertical)
# Make sure the splitter will expand to fill available space
policy = splitter.sizePolicy()
policy.setHorizontalStretch(50)
policy.setVerticalStretch(50)
if group.orientation == "horizontal":
policy.setVerticalPolicy(QtGui.QSizePolicy.Expanding)
else:
policy.setHorizontalPolicy(QtGui.QSizePolicy.Expanding)
splitter.setSizePolicy(policy)
if outer is None:
outer = splitter
else:
inner.addWidget(splitter)
# Create an editor.
editor = ui_panel.SplitterGroupEditor(control=outer, splitter=splitter, ui=ui)
self._setup_editor(group, editor)
self._add_splitter_items(content, splitter)
elif group.layout in ("tabbed", "fold"):
# Create the TabWidget or ToolBox.
if group.layout == "tabbed":
sub = QtGui.QTabWidget()
sub.setProperty("traits_tabbed_group", True)
else:
sub = QtGui.QToolBox()
# Give tab/tool widget stretch factor equivalent to default stretch
# factory for a resizeable item. See end of '_add_items'.
policy = sub.sizePolicy()
policy.setHorizontalStretch(50)
policy.setVerticalStretch(50)
sub.setSizePolicy(policy)
ui_panel._fill_panel(sub, content, self.ui, self._add_page_item)
if outer is None:
outer = sub
else:
inner.addWidget(sub)
# Create an editor.
editor = ui_panel.TabbedFoldGroupEditor(container=sub, control=outer, ui=ui)
self._setup_editor(group, editor)
else:
# See if we need to control the visual appearance of the group.
if group.visible_when != "" or group.enabled_when != "":
# Make sure that outer is a widget and inner is a layout.
# Hiding a layout is not properly supported by Qt (the
# workaround in ``traitsui.qt4.editor._visible_changed_helper``
# often leaves undesirable blank space).
if outer is None:
outer = inner = QtGui.QBoxLayout(self.direction)
if isinstance(outer, QtGui.QLayout):
widget = QtGui.QWidget()
widget.setLayout(outer)
outer = widget
# Create an editor.
self._setup_editor(group, ui_panel.GroupEditor(control=outer))
if isinstance(content[0], Group):
layout = self._add_groups(content, inner)
else:
layout = self._add_items(content, inner)
layout.setAlignment(QtCore.Qt.AlignLeft | QtCore.Qt.AlignTop)
if outer is None:
outer = layout
elif layout is not inner:
inner.addLayout(layout)
if group.style_sheet:
if isinstance(outer, QtGui.QLayout):
inner = outer
outer = QtGui.QWidget()
outer.setLayout(inner)
# ensure this is not empty group
if isinstance(outer, QtGui.QWidget):
outer.setStyleSheet(group.style_sheet)
# Publish the top-level widget, layout or None.
self.control = outer
# Publish the optional sub-control.
self.sub_control = sub
def _add_items(self, content, outer=None):
"""Adds a list of Item objects, creating a layout if needed. Return
the outermost layout.
"""
# Get local references to various objects we need:
ui = self.ui
info = ui.info
handler = ui.handler
group = self.group
show_left = group.show_left
columns = group.columns
# See if a label is needed.
show_labels = False
for item in content:
show_labels |= item.show_label
# See if a grid layout is needed.
if show_labels or columns > 1:
inner = QtGui.QGridLayout()
if outer is None:
outer = inner
else:
outer.addLayout(inner)
row = 0
if show_left:
label_alignment = QtCore.Qt.AlignRight
else:
label_alignment = QtCore.Qt.AlignLeft
else:
# Use the existing layout if there is one.
if outer is None:
outer = QtGui.QBoxLayout(self.direction)
inner = outer
row = -1
label_alignment = 0
# Process each Item in the list:
col = -1
for item in content:
# Keep a track of the current logical row and column unless the
# layout is not a grid.
col += 1
if row >= 0 and col >= columns:
col = 0
row += 1
# Get the name in order to determine its type:
name = item.name
# Check if is a label:
if name == "":
label = item.label
if label != "":
# Create the label widget.
if item.style == "simple":
label = QtGui.QLabel(label)
else:
label = ui_panel.heading_text(None, text=label).control
self._add_widget(inner, label, row, col, show_labels)
if item.emphasized:
self._add_emphasis(label)
# Continue on to the next Item in the list:
continue
# Check if it is a separator:
if name == "_":
cols = columns
# See if the layout is a grid.
if row >= 0:
# Move to the start of the next row if necessary.
if col > 0:
col = 0
row += 1
# Skip the row we are about to do.
row += 1
# Allow for the columns.
if show_labels:
cols *= 2
for i in range(cols):
line = QtGui.QFrame()
if self.direction == QtGui.QBoxLayout.LeftToRight:
# Add a vertical separator:
line.setFrameShape(QtGui.QFrame.VLine)
if row < 0:
inner.addWidget(line)
else:
inner.addWidget(line, i, row)
else:
# Add a horizontal separator:
line.setFrameShape(QtGui.QFrame.HLine)
if row < 0:
inner.addWidget(line)
else:
inner.addWidget(line, row, i)
line.setFrameShadow(QtGui.QFrame.Sunken)
# Continue on to the next Item in the list:
continue
# Convert a blank to a 5 pixel spacer:
if name == " ":
name = "5"
# Check if it is a spacer:
if ui_panel.all_digits.match(name):
# If so, add the appropriate amount of space to the layout:
n = int(name)
if self.direction == QtGui.QBoxLayout.LeftToRight:
# Add a horizontal spacer:
spacer = QtGui.QSpacerItem(n, 1)
else:
# Add a vertical spacer:
spacer = QtGui.QSpacerItem(1, n)
self._add_widget(inner, spacer, row, col, show_labels)
# Continue on to the next Item in the list:
continue
# Otherwise, it must be a trait Item:
object = eval(item.object_, globals(), ui.context)
trait = object.base_trait(name)
desc = trait.desc or ""
# Get the editor factory associated with the Item:
editor_factory = item.editor
if editor_factory is None:
editor_factory = trait.get_editor().set(**item.editor_args)
# If still no editor factory found, use a default text editor:
if editor_factory is None:
from traitsui.qt4.text_editor import ToolkitEditorFactory
editor_factory = ToolkitEditorFactory()
# If the item has formatting traits set them in the editor
# factory:
if item.format_func is not None:
editor_factory.format_func = item.format_func
if item.format_str != "":
editor_factory.format_str = item.format_str
# If the item has an invalid state extended trait name, set it
# in the editor factory:
if item.invalid != "":
editor_factory.invalid = item.invalid
# Create the requested type of editor from the editor factory:
factory_method = getattr(editor_factory, item.style + "_editor")
editor = factory_method(ui, object, name, item.tooltip, None).set(item=item, object_name=item.object)
# Tell the editor to actually build the editing widget. Note that
# "inner" is a layout. This shouldn't matter as individual editors
# shouldn't be using it as a parent anyway. The important thing is
# that it is not None (otherwise the main TraitsUI code can change
# the "kind" of the created UI object).
editor.prepare(inner)
control = editor.control
if item.style_sheet:
control.setStyleSheet(item.style_sheet)
# Set the initial 'enabled' state of the editor from the factory:
editor.enabled = editor_factory.enabled
# Handle any label.
if item.show_label:
label = self._create_label(item, ui, desc)
self._add_widget(inner, label, row, col, show_labels, label_alignment)
else:
label = None
editor.label_control = label
# Add emphasis to the editor control if requested:
if item.emphasized:
self._add_emphasis(control)
# Give the editor focus if it requested it:
if item.has_focus:
control.setFocus()
# Set the correct size on the control, as specified by the user:
stretch = 0
item_width = item.width
item_height = item.height
if (item_width != -1) or (item_height != -1):
is_horizontal = self.direction == QtGui.QBoxLayout.LeftToRight
min_size = control.minimumSizeHint()
width = min_size.width()
height = min_size.height()
force_width = False
force_height = False
if (0.0 < item_width <= 1.0) and is_horizontal:
stretch = int(100 * item_width)
item_width = int(item_width)
if item_width < -1:
item_width = -item_width
force_width = True
else:
item_width = max(item_width, width)
if (0.0 < item_height <= 1.0) and (not is_horizontal):
stretch = int(100 * item_height)
item_height = int(item_height)
if item_height < -1:
item_height = -item_height
force_height = True
else:
item_height = max(item_height, height)
control.setMinimumWidth(max(item_width, 0))
control.setMinimumHeight(max(item_height, 0))
if (stretch == 0 or not is_horizontal) and force_width:
control.setMaximumWidth(item_width)
if (stretch == 0 or is_horizontal) and force_height:
control.setMaximumHeight(item_height)
# Set size and stretch policies
self._set_item_size_policy(editor, item, label, stretch)
# Add the created editor control to the layout
# FIXME: Need to decide what to do about border_size and padding
self._add_widget(inner, control, row, col, show_labels)
# ---- Update the UI object
# Bind the editor into the UIInfo object name space so it can be
# referred to by a Handler while the user interface is active:
id = item.id or name
info.bind(id, editor, item.id)
self.ui._scrollable |= editor.scrollable
# Also, add the editors to the list of editors used to construct
# the user interface:
ui._editors.append(editor)
# If the handler wants to be notified when the editor is created,
# add it to the list of methods to be called when the UI is
# complete:
defined = getattr(handler, id + "_defined", None)
if defined is not None:
ui.add_defined(defined)
# If the editor is conditionally visible, add the visibility
# 'expression' and the editor to the UI object's list of monitored
# objects:
if item.visible_when != "":
ui.add_visible(item.visible_when, editor)
# If the editor is conditionally enabled, add the enabling
# 'expression' and the editor to the UI object's list of monitored
# objects:
if item.enabled_when != "":
ui.add_enabled(item.enabled_when, editor)
return outer
def __init__(self, ui, parent, is_subpanel):
"""Initialise the object.
"""
self.ui = ui
history = ui.history
view = ui.view
# Reset any existing history listeners.
if history is not None:
history.on_trait_change(self._on_undoable, 'undoable', remove=True)
history.on_trait_change(self._on_redoable, 'redoable', remove=True)
history.on_trait_change(self._on_revertable,
'undoable',
remove=True)
# Determine if we need any buttons or an 'undo' history.
buttons = [self.coerce_button(button) for button in view.buttons]
nr_buttons = len(buttons)
has_buttons = (not is_subpanel and
(nr_buttons != 1 or not self.is_button(buttons[0], '')))
if nr_buttons == 0:
if view.undo:
self.check_button(buttons, UndoButton)
if view.revert:
self.check_button(buttons, RevertButton)
if view.help:
self.check_button(buttons, HelpButton)
if not is_subpanel and history is None:
for button in buttons:
if self.is_button(button, 'Undo') or self.is_button(
button, 'Revert'):
history = ui.history = UndoHistory()
break
# Create the panel.
self.control = panel(ui)
# if self.control.isinstance(QtGui.QTabWidget):
# self.control.setTabBar(myQTabBar())
# Suppress the title if this is a subpanel or if we think it should be
# superceded by the title of an "outer" widget (eg. a dock widget).
title = view.title
if (is_subpanel or (isinstance(parent, QtGui.QMainWindow)
and not isinstance(parent.parent(), QtGui.QDialog))
or isinstance(parent, QtGui.QTabWidget)):
title = ""
# ============ Monkey Patch ===============
if isinstance(parent, QtGui.QTabWidget):
bar = parent.tabBar()
if not isinstance(bar, myQTabBar):
parent.setTabBar(myQTabBar())
# =========================================
# Panels must be widgets as it is only the TraitsUI PyQt code that can
# handle them being layouts as well. Therefore create a widget if the
# panel is not a widget or if we need a title or buttons.
if not isinstance(self.control,
QtGui.QWidget) or title != "" or has_buttons:
w = QtGui.QWidget()
layout = QtGui.QVBoxLayout(w)
layout.setContentsMargins(0, 0, 0, 0)
# Handle any view title.
if title != "":
layout.addWidget(heading_text(None, text=view.title).control)
if isinstance(self.control, QtGui.QWidget):
layout.addWidget(self.control)
elif isinstance(self.control, QtGui.QLayout):
layout.addLayout(self.control)
self.control = w
# Add any buttons.
if has_buttons:
# Add the horizontal separator
separator = QtGui.QFrame()
separator.setFrameStyle(QtGui.QFrame.Sunken
| QtGui.QFrame.HLine)
separator.setFixedHeight(2)
layout.addWidget(separator)
# Add the special function buttons
bbox = QtGui.QDialogButtonBox(QtCore.Qt.Horizontal)
for button in buttons:
role = QtGui.QDialogButtonBox.ActionRole
if self.is_button(button, 'Undo'):
self.undo = self.add_button(button, bbox, role,
self._on_undo, False,
'Undo')
self.redo = self.add_button(button, bbox, role,
self._on_redo, False,
'Redo')
history.on_trait_change(self._on_undoable,
'undoable',
dispatch='ui')
history.on_trait_change(self._on_redoable,
'redoable',
dispatch='ui')
elif self.is_button(button, 'Revert'):
role = QtGui.QDialogButtonBox.ResetRole
self.revert = self.add_button(button, bbox, role,
self._on_revert, False)
history.on_trait_change(self._on_revertable,
'undoable',
dispatch='ui')
elif self.is_button(button, 'Help'):
role = QtGui.QDialogButtonBox.HelpRole
self.add_button(button, bbox, role, self._on_help)
elif not self.is_button(button, ''):
self.add_button(button, bbox, role)
layout.addWidget(bbox)
# Ensure the control has a size hint reflecting the View specification.
# Yes, this is a hack, but it's too late to repair this convoluted
# control building process, so we do what we have to...
self.control.sizeHint = _size_hint_wrapper(self.control.sizeHint, ui)
def __init__(self, ui, parent, is_subpanel):
"""Initialise the object.
"""
self.ui = ui
history = ui.history
view = ui.view
# Reset any existing history listeners.
if history is not None:
history.on_trait_change(self._on_undoable, 'undoable', remove=True)
history.on_trait_change(self._on_redoable, 'redoable', remove=True)
history.on_trait_change(self._on_revertable, 'undoable',
remove=True)
# Determine if we need any buttons or an 'undo' history.
buttons = [self.coerce_button(button) for button in view.buttons]
nr_buttons = len(buttons)
has_buttons = (not is_subpanel and (nr_buttons != 1 or
not self.is_button(buttons[0], '')))
if nr_buttons == 0:
if view.undo:
self.check_button(buttons, UndoButton)
if view.revert:
self.check_button(buttons, RevertButton)
if view.help:
self.check_button(buttons, HelpButton)
if not is_subpanel and history is None:
for button in buttons:
if self.is_button(button, 'Undo') or self.is_button(button, 'Revert'):
history = ui.history = UndoHistory()
break
# Create the panel.
self.control = panel(ui)
# if self.control.isinstance(QtGui.QTabWidget):
# self.control.setTabBar(myQTabBar())
# Suppress the title if this is a subpanel or if we think it should be
# superceded by the title of an "outer" widget (eg. a dock widget).
title = view.title
if (is_subpanel or (isinstance(parent, QtGui.QMainWindow) and
not isinstance(parent.parent(), QtGui.QDialog)) or
isinstance(parent, QtGui.QTabWidget)):
title = ""
# ============ Monkey Patch ===============
if isinstance(parent, QtGui.QTabWidget):
bar = parent.tabBar()
if not isinstance(bar, myQTabBar):
parent.setTabBar(myQTabBar())
# p = parent
# while p is not None:
# try:
# bar = p.tabBar()
# except AttributeError:
# bar = None
# print p, bar
# p = p.parent()
# =========================================
# Panels must be widgets as it is only the TraitsUI PyQt code that can
# handle them being layouts as well. Therefore create a widget if the
# panel is not a widget or if we need a title or buttons.
if not isinstance(self.control, QtGui.QWidget) or title != "" or has_buttons:
w = QtGui.QWidget()
layout = QtGui.QVBoxLayout(w)
layout.setContentsMargins(0, 0, 0, 0)
# Handle any view title.
if title != "":
layout.addWidget(heading_text(None, text=view.title).control)
if isinstance(self.control, QtGui.QWidget):
layout.addWidget(self.control)
elif isinstance(self.control, QtGui.QLayout):
layout.addLayout(self.control)
self.control = w
# Add any buttons.
if has_buttons:
# Add the horizontal separator
separator = QtGui.QFrame()
separator.setFrameStyle(QtGui.QFrame.Sunken |
QtGui.QFrame.HLine)
separator.setFixedHeight(2)
layout.addWidget(separator)
# Add the special function buttons
bbox = QtGui.QDialogButtonBox(QtCore.Qt.Horizontal)
for button in buttons:
role = QtGui.QDialogButtonBox.ActionRole
if self.is_button(button, 'Undo'):
self.undo = self.add_button(button, bbox, role,
self._on_undo, False,
'Undo')
self.redo = self.add_button(button, bbox, role,
self._on_redo, False,
'Redo')
history.on_trait_change(self._on_undoable, 'undoable',
dispatch='ui')
history.on_trait_change(self._on_redoable, 'redoable',
dispatch='ui')
elif self.is_button(button, 'Revert'):
role = QtGui.QDialogButtonBox.ResetRole
self.revert = self.add_button(button, bbox, role,
self._on_revert, False)
history.on_trait_change(self._on_revertable, 'undoable',
dispatch='ui')
elif self.is_button(button, 'Help'):
role = QtGui.QDialogButtonBox.HelpRole
self.add_button(button, bbox, role, self._on_help)
elif not self.is_button(button, ''):
self.add_button(button, bbox, role)
layout.addWidget(bbox)
# Ensure the control has a size hint reflecting the View specification.
# Yes, this is a hack, but it's too late to repair this convoluted
# control building process, so we do what we have to...
self.control.sizeHint = _size_hint_wrapper(self.control.sizeHint, ui)
