def __init__(self, parent=None):
QPlainTextEdit.__init__(self, parent)
BaseEditMixin.__init__(self)
self.setAttribute(Qt.WA_DeleteOnClose)
self.extra_selections_dict = {}
self.connect(self, SIGNAL('textChanged()'), self.changed)
self.connect(self, SIGNAL('cursorPositionChanged()'),
self.cursor_position_changed)
self.indent_chars = " " * 4
# Code completion / calltips
if parent is not None:
mainwin = parent
while not isinstance(mainwin, QMainWindow):
mainwin = mainwin.parent()
if mainwin is None:
break
if mainwin is not None:
parent = mainwin
self.completion_widget = CompletionWidget(self, parent)
self.codecompletion_auto = False
self.codecompletion_case = True
self.codecompletion_enter = False
self.completion_text = ""
self.calltip_widget = CallTipWidget(self, hide_timer_on=True)
self.calltips = True
self.calltip_position = None
self.has_cell_separators = False
self.highlight_current_cell_enabled = False
# The color values may be overridden by the syntax highlighter
# Highlight current line color
self.currentline_color = QColor(Qt.red).lighter(190)
self.currentcell_color = QColor(Qt.red).lighter(194)
# Brace matching
self.bracepos = None
self.matched_p_color = QColor(Qt.green)
self.unmatched_p_color = QColor(Qt.red)
def __init__(self, parent=None):
QTextEdit.__init__(self, parent)
BaseEditMixin.__init__(self)
TracebackLinksMixin.__init__(self)
InspectObjectMixin.__init__(self)
self.found_results = []
self.calltip_widget = CallTipWidget(self, hide_timer_on=True)
# To not use Spyder calltips obtained through the monitor
self.calltips = False
def __init__(self, parent=None):
QPlainTextEdit.__init__(self, parent)
BaseEditMixin.__init__(self)
self.setAttribute(Qt.WA_DeleteOnClose)
self.extra_selections_dict = {}
self.connect(self, SIGNAL('textChanged()'), self.changed)
self.connect(self, SIGNAL('cursorPositionChanged()'),
self.cursor_position_changed)
self.indent_chars = " "*4
# Code completion / calltips
if parent is not None:
mainwin = parent
while not isinstance(mainwin, QMainWindow):
mainwin = mainwin.parent()
if mainwin is None:
break
if mainwin is not None:
parent = mainwin
self.completion_widget = CompletionWidget(self, parent)
self.codecompletion_auto = False
self.codecompletion_case = True
self.codecompletion_enter = False
self.completion_text = ""
self.calltip_widget = CallTipWidget(self, hide_timer_on=True)
self.calltips = True
self.calltip_position = None
self.has_cell_separators = False
self.highlight_current_cell_enabled = False
# The color values may be overridden by the syntax highlighter
# Highlight current line color
self.currentline_color = QColor(Qt.red).lighter(190)
self.currentcell_color = QColor(Qt.red).lighter(194)
# Brace matching
self.bracepos = None
self.matched_p_color = QColor(Qt.green)
self.unmatched_p_color = QColor(Qt.red)
def __init__(self, parent=None):
QPlainTextEdit.__init__(self, parent)
BaseEditMixin.__init__(self)
self.setAttribute(Qt.WA_DeleteOnClose)
self.extra_selections_dict = {}
self.connect(self, SIGNAL('textChanged()'), self.changed)
self.connect(self, SIGNAL('cursorPositionChanged()'),
self.cursor_position_changed)
self.indent_chars = " "*4
# Code completion / calltips
if parent is not None:
mainwin = parent
while not isinstance(mainwin, QMainWindow):
mainwin = mainwin.parent()
if mainwin is None:
break
if mainwin is not None:
parent = mainwin
self.completion_widget = CompletionWidget(self, parent)
self.codecompletion_auto = False
self.codecompletion_case = True
self.codecompletion_single = False
self.codecompletion_enter = False
self.calltips = True
self.calltip_position = None
self.calltip_font = QFont()
self.completion_text = ""
self.signature_widget = CallTipWidget(self)
# Highlight current line color
self.currentline_color = QColor(Qt.red).lighter(190)
# Brace matching
self.bracepos = None
self.matched_p_color = QColor(Qt.green)
self.unmatched_p_color = QColor(Qt.red)
class TextEditBaseWidget(QPlainTextEdit, BaseEditMixin):
"""Text edit base widget"""
BRACE_MATCHING_SCOPE = ('sof', 'eof')
def __init__(self, parent=None):
QPlainTextEdit.__init__(self, parent)
BaseEditMixin.__init__(self)
self.setAttribute(Qt.WA_DeleteOnClose)
self.extra_selections_dict = {}
self.connect(self, SIGNAL('textChanged()'), self.changed)
self.connect(self, SIGNAL('cursorPositionChanged()'),
self.cursor_position_changed)
self.indent_chars = " "*4
# Code completion / calltips
if parent is not None:
mainwin = parent
while not isinstance(mainwin, QMainWindow):
mainwin = mainwin.parent()
if mainwin is None:
break
if mainwin is not None:
parent = mainwin
self.completion_widget = CompletionWidget(self, parent)
self.codecompletion_auto = False
self.codecompletion_case = True
self.codecompletion_enter = False
self.calltips = True
self.calltip_position = None
self.has_cell_separators = False
self.cell_separators = None
self.completion_text = ""
self.calltip_widget = CallTipWidget(self, hide_timer_on=True)
# The color values may be overridden by the syntax highlighter
# Highlight current line color
self.currentline_color = QColor(Qt.red).lighter(190)
self.currentcell_color = QColor(Qt.red).lighter(194)
# Brace matching
self.bracepos = None
self.matched_p_color = QColor(Qt.green)
self.unmatched_p_color = QColor(Qt.red)
def setup_completion(self, size=None, font=None):
self.completion_widget.setup_appearance(size, font)
def set_indent_chars(self, indent_chars):
self.indent_chars = indent_chars
def set_palette(self, background, foreground):
"""
Set text editor palette colors:
background color and caret (text cursor) color
"""
palette = QPalette()
palette.setColor(QPalette.Base, background)
palette.setColor(QPalette.Text, foreground)
self.setPalette(palette)
#------Extra selections
def get_extra_selections(self, key):
return self.extra_selections_dict.get(key, [])
def set_extra_selections(self, key, extra_selections):
self.extra_selections_dict[key] = extra_selections
def update_extra_selections(self):
extra_selections = []
for key, extra in list(self.extra_selections_dict.items()):
if key == 'current_line' or key == 'current_cell':
# Python 3 compatibility (weird): current line has to be
# highlighted first
extra_selections = extra + extra_selections
else:
extra_selections += extra
self.setExtraSelections(extra_selections)
def clear_extra_selections(self, key):
self.extra_selections_dict[key] = []
self.update_extra_selections()
def changed(self):
"""Emit changed signal"""
self.emit(SIGNAL('modificationChanged(bool)'),
self.document().isModified())
#------Highlight current line
def highlight_current_line(self):
"""Highlight current line"""
selection = QTextEdit.ExtraSelection()
selection.format.setProperty(QTextFormat.FullWidthSelection,
to_qvariant(True))
selection.format.setBackground(self.currentline_color)
selection.cursor = self.textCursor()
selection.cursor.clearSelection()
self.set_extra_selections('current_line', [selection])
self.update_extra_selections()
def unhighlight_current_line(self):
"""Unhighlight current line"""
self.clear_extra_selections('current_line')
#------Highlight current cell
def highlight_current_cell(self):
"""Highlight current cell"""
if self.cell_separators is None:
return
selection = QTextEdit.ExtraSelection()
selection.format.setProperty(QTextFormat.FullWidthSelection,
to_qvariant(True))
selection.format.setBackground(self.currentcell_color)
selection.cursor, whole_file_selected, whole_screen_selected =\
self.select_current_cell_in_visible_portion()
if whole_file_selected:
self.clear_extra_selections('current_cell')
elif whole_screen_selected:
if self.has_cell_separators:
self.set_extra_selections('current_cell', [selection])
self.update_extra_selections()
else:
self.clear_extra_selections('current_cell')
else:
self.set_extra_selections('current_cell', [selection])
self.update_extra_selections()
def unhighlight_current_cell(self):
"""Unhighlight current cell"""
self.clear_extra_selections('current_cell')
#------Brace matching
def find_brace_match(self, position, brace, forward):
start_pos, end_pos = self.BRACE_MATCHING_SCOPE
if forward:
bracemap = {'(': ')', '[': ']', '{': '}'}
text = self.get_text(position, end_pos)
i_start_open = 1
i_start_close = 1
else:
bracemap = {')': '(', ']': '[', '}': '{'}
text = self.get_text(start_pos, position)
i_start_open = len(text)-1
i_start_close = len(text)-1
while True:
if forward:
i_close = text.find(bracemap[brace], i_start_close)
else:
i_close = text.rfind(bracemap[brace], 0, i_start_close+1)
if i_close > -1:
if forward:
i_start_close = i_close+1
i_open = text.find(brace, i_start_open, i_close)
else:
i_start_close = i_close-1
i_open = text.rfind(brace, i_close, i_start_open+1)
if i_open > -1:
if forward:
i_start_open = i_open+1
else:
i_start_open = i_open-1
else:
# found matching brace
if forward:
return position+i_close
else:
return position-(len(text)-i_close)
else:
# no matching brace
return
def __highlight(self, positions, color=None, cancel=False):
if cancel:
self.clear_extra_selections('brace_matching')
return
extra_selections = []
for position in positions:
if position > self.get_position('eof'):
return
selection = QTextEdit.ExtraSelection()
selection.format.setBackground(color)
selection.cursor = self.textCursor()
selection.cursor.clearSelection()
selection.cursor.setPosition(position)
selection.cursor.movePosition(QTextCursor.NextCharacter,
QTextCursor.KeepAnchor)
extra_selections.append(selection)
self.set_extra_selections('brace_matching', extra_selections)
self.update_extra_selections()
def cursor_position_changed(self):
"""Brace matching"""
if self.bracepos is not None:
self.__highlight(self.bracepos, cancel=True)
self.bracepos = None
cursor = self.textCursor()
if cursor.position() == 0:
return
cursor.movePosition(QTextCursor.PreviousCharacter,
QTextCursor.KeepAnchor)
text = to_text_string(cursor.selectedText())
pos1 = cursor.position()
if text in (')', ']', '}'):
pos2 = self.find_brace_match(pos1, text, forward=False)
elif text in ('(', '[', '{'):
pos2 = self.find_brace_match(pos1, text, forward=True)
else:
return
if pos2 is not None:
self.bracepos = (pos1, pos2)
self.__highlight(self.bracepos, color=self.matched_p_color)
else:
self.bracepos = (pos1,)
self.__highlight(self.bracepos, color=self.unmatched_p_color)
#-----Widget setup and options
def set_codecompletion_auto(self, state):
"""Set code completion state"""
self.codecompletion_auto = state
def set_codecompletion_case(self, state):
"""Case sensitive completion"""
self.codecompletion_case = state
self.completion_widget.case_sensitive = state
def set_codecompletion_enter(self, state):
"""Enable Enter key to select completion"""
self.codecompletion_enter = state
self.completion_widget.enter_select = state
def set_calltips(self, state):
"""Set calltips state"""
self.calltips = state
def set_wrap_mode(self, mode=None):
"""
Set wrap mode
Valid *mode* values: None, 'word', 'character'
"""
if mode == 'word':
wrap_mode = QTextOption.WrapAtWordBoundaryOrAnywhere
elif mode == 'character':
wrap_mode = QTextOption.WrapAnywhere
else:
wrap_mode = QTextOption.NoWrap
self.setWordWrapMode(wrap_mode)
#------Reimplementing Qt methods
def copy(self):
"""
Reimplement Qt method
Copy text to clipboard with correct EOL chars
"""
QApplication.clipboard().setText(self.get_selected_text())
#------Text: get, set, ...
def get_selection_as_executable_code(self):
"""Return selected text as a processed text,
to be executable in a Python/IPython interpreter"""
ls = self.get_line_separator()
_indent = lambda line: len(line)-len(line.lstrip())
line_from, line_to = self.get_selection_bounds()
text = self.get_selected_text()
if not text:
return
lines = text.split(ls)
if len(lines) > 1:
# Multiline selection -> eventually fixing indentation
original_indent = _indent(self.get_text_line(line_from))
text = (" "*(original_indent-_indent(lines[0])))+text
# If there is a common indent to all lines, find it.
# Moving from bottom line to top line ensures that blank
# lines inherit the indent of the line *below* it,
# which is the desired behavior.
min_indent = 999
current_indent = 0
lines = text.split(ls)
for i in range(len(lines)-1, -1, -1):
line = lines[i]
if line.strip():
current_indent = _indent(line)
min_indent = min(current_indent, min_indent)
else:
lines[i] = ' ' * current_indent
if min_indent:
lines = [line[min_indent:] for line in lines]
# Remove any leading whitespace or comment lines
# since they confuse the reserved word detector that follows below
while lines:
first_line = lines[0].lstrip()
if first_line == '' or first_line[0] == '#':
lines.pop(0)
else:
break
# Add an EOL character after indentation blocks that start with some
# Python reserved words, so that it gets evaluated automatically
# by the console
varname = re.compile('[a-zA-Z0-9_]*') # matches valid variable names
maybe = False
nextexcept = ()
for n, line in enumerate(lines):
if not _indent(line):
word = varname.match(line).group()
if maybe and word not in nextexcept:
lines[n-1] += ls
maybe = False
if word:
if word in ('def', 'for', 'while', 'with', 'class'):
maybe = True
nextexcept = ()
elif word == 'if':
maybe = True
nextexcept = ('elif', 'else')
elif word == 'try':
maybe = True
nextexcept = ('except', 'finally')
if maybe:
if lines[-1].strip() == '':
lines[-1] += ls
else:
lines.append(ls)
return ls.join(lines)
def get_cell_as_executable_code(self):
"""Return cell contents as executable code"""
start_pos, end_pos = self.__save_selection()
cursor, whole_file_selected = self.select_current_cell()
if not whole_file_selected:
self.setTextCursor(cursor)
text = self.get_selection_as_executable_code()
self.__restore_selection(start_pos, end_pos)
return text
def is_cell_separator(self, cursor=None, block=None):
"""Return True if cursor (or text block) is on a block separator"""
assert cursor is not None or block is not None
if cursor is not None:
cursor0 = QTextCursor(cursor)
cursor0.select(QTextCursor.BlockUnderCursor)
text = to_text_string(cursor0.selectedText())
else:
text = to_text_string(block.text())
if self.cell_separators is None:
return False
else:
return text.lstrip().startswith(self.cell_separators)
def select_current_cell(self):
"""Select cell under cursor
cell = group of lines separated by CELL_SEPARATORS
returns the textCursor and a boolean indicating if the
entire file is selected"""
cursor = self.textCursor()
cursor.movePosition(QTextCursor.StartOfBlock)
cur_pos = prev_pos = cursor.position()
# Moving to the next line that is not a separator, if we are
# exactly at one of them
while self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.NextBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
return cursor, False
prev_pos = cur_pos
# If not, move backwards to find the previous separator
while not self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.PreviousBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
if self.is_cell_separator(cursor):
return cursor, False
else:
break
cursor.setPosition(prev_pos)
cell_at_file_start = cursor.atStart()
# Once we find it (or reach the beginning of the file)
# move to the next separator (or the end of the file)
# so we can grab the cell contents
while not self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.NextBlock,
QTextCursor.KeepAnchor)
cur_pos = cursor.position()
if cur_pos == prev_pos:
cursor.movePosition(QTextCursor.EndOfBlock,
QTextCursor.KeepAnchor)
break
prev_pos = cur_pos
cell_at_file_end = cursor.atEnd()
return cursor, cell_at_file_start and cell_at_file_end
def select_current_cell_in_visible_portion(self):
"""Select cell under cursor in the visible portion of the file
cell = group of lines separated by CELL_SEPARATORS
returns
-the textCursor
-a boolean indicating if the entire file is selected
-a boolean indicating if the entire visible portion of the file is selected"""
cursor = self.textCursor()
cursor.movePosition(QTextCursor.StartOfBlock)
cur_pos = prev_pos = cursor.position()
beg_pos = self.cursorForPosition(QPoint(0, 0)).position()
bottom_right = QPoint(self.viewport().width() - 1,
self.viewport().height() - 1)
end_pos = self.cursorForPosition(bottom_right).position()
# Moving to the next line that is not a separator, if we are
# exactly at one of them
while self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.NextBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
return cursor, False, False
prev_pos = cur_pos
# If not, move backwards to find the previous separator
while not self.is_cell_separator(cursor)\
and cursor.position() >= beg_pos:
cursor.movePosition(QTextCursor.PreviousBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
if self.is_cell_separator(cursor):
return cursor, False, False
else:
break
cell_at_screen_start = cursor.position() <= beg_pos
cursor.setPosition(prev_pos)
cell_at_file_start = cursor.atStart()
# Selecting cell header
if not cell_at_file_start:
cursor.movePosition(QTextCursor.PreviousBlock)
cursor.movePosition(QTextCursor.NextBlock,
QTextCursor.KeepAnchor)
# Once we find it (or reach the beginning of the file)
# move to the next separator (or the end of the file)
# so we can grab the cell contents
while not self.is_cell_separator(cursor)\
and cursor.position() <= end_pos:
cursor.movePosition(QTextCursor.NextBlock,
QTextCursor.KeepAnchor)
cur_pos = cursor.position()
if cur_pos == prev_pos:
cursor.movePosition(QTextCursor.EndOfBlock,
QTextCursor.KeepAnchor)
break
prev_pos = cur_pos
cell_at_file_end = cursor.atEnd()
cell_at_screen_end = cursor.position() >= end_pos
return cursor,\
cell_at_file_start and cell_at_file_end,\
cell_at_screen_start and cell_at_screen_end
def go_to_next_cell(self):
"""Go to the next cell of lines"""
cursor = self.textCursor()
cursor.movePosition(QTextCursor.NextBlock)
cur_pos = prev_pos = cursor.position()
while not self.is_cell_separator(cursor):
# Moving to the next code cell
cursor.movePosition(QTextCursor.NextBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
return
self.setTextCursor(cursor)
def get_line_count(self):
"""Return document total line number"""
return self.blockCount()
def __save_selection(self):
"""Save current cursor selection and return position bounds"""
cursor = self.textCursor()
return cursor.selectionStart(), cursor.selectionEnd()
def __restore_selection(self, start_pos, end_pos):
"""Restore cursor selection from position bounds"""
cursor = self.textCursor()
cursor.setPosition(start_pos)
cursor.setPosition(end_pos, QTextCursor.KeepAnchor)
self.setTextCursor(cursor)
def __duplicate_line_or_selection(self, after_current_line=True):
"""Duplicate current line or selected text"""
cursor = self.textCursor()
cursor.beginEditBlock()
start_pos, end_pos = self.__save_selection()
if to_text_string(cursor.selectedText()):
cursor.setPosition(end_pos)
# Check if end_pos is at the start of a block: if so, starting
# changes from the previous block
cursor.movePosition(QTextCursor.StartOfBlock,
QTextCursor.KeepAnchor)
if not to_text_string(cursor.selectedText()):
cursor.movePosition(QTextCursor.PreviousBlock)
end_pos = cursor.position()
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
while cursor.position() <= end_pos:
cursor.movePosition(QTextCursor.EndOfBlock, QTextCursor.KeepAnchor)
if cursor.atEnd():
cursor_temp = QTextCursor(cursor)
cursor_temp.clearSelection()
cursor_temp.insertText(self.get_line_separator())
break
cursor.movePosition(QTextCursor.NextBlock, QTextCursor.KeepAnchor)
text = cursor.selectedText()
cursor.clearSelection()
if not after_current_line:
# Moving cursor before current line/selected text
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
start_pos += len(text)
end_pos += len(text)
cursor.insertText(text)
cursor.endEditBlock()
self.setTextCursor(cursor)
self.__restore_selection(start_pos, end_pos)
def duplicate_line(self):
"""
Duplicate current line or selected text
Paste the duplicated text *after* the current line/selected text
"""
self.__duplicate_line_or_selection(after_current_line=True)
def copy_line(self):
"""
Copy current line or selected text
Paste the duplicated text *before* the current line/selected text
"""
self.__duplicate_line_or_selection(after_current_line=False)
def __move_line_or_selection(self, after_current_line=True):
"""Move current line or selected text"""
cursor = self.textCursor()
cursor.beginEditBlock()
start_pos, end_pos = self.__save_selection()
if to_text_string(cursor.selectedText()):
# Check if start_pos is at the start of a block
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
start_pos = cursor.position()
cursor.setPosition(end_pos)
# Check if end_pos is at the start of a block: if so, starting
# changes from the previous block
cursor.movePosition(QTextCursor.StartOfBlock,
QTextCursor.KeepAnchor)
if to_text_string(cursor.selectedText()):
cursor.movePosition(QTextCursor.NextBlock)
end_pos = cursor.position()
else:
cursor.movePosition(QTextCursor.StartOfBlock)
start_pos = cursor.position()
cursor.movePosition(QTextCursor.NextBlock)
end_pos = cursor.position()
cursor.setPosition(start_pos)
cursor.setPosition(end_pos, QTextCursor.KeepAnchor)
sel_text = to_text_string(cursor.selectedText())
cursor.removeSelectedText()
if after_current_line:
text = to_text_string(cursor.block().text())
start_pos += len(text)+1
end_pos += len(text)+1
cursor.movePosition(QTextCursor.NextBlock)
else:
cursor.movePosition(QTextCursor.PreviousBlock)
text = to_text_string(cursor.block().text())
start_pos -= len(text)+1
end_pos -= len(text)+1
cursor.insertText(sel_text)
cursor.endEditBlock()
self.setTextCursor(cursor)
self.__restore_selection(start_pos, end_pos)
def move_line_up(self):
"""Move up current line or selected text"""
self.__move_line_or_selection(after_current_line=False)
def move_line_down(self):
"""Move down current line or selected text"""
self.__move_line_or_selection(after_current_line=True)
def extend_selection_to_complete_lines(self):
"""Extend current selection to complete lines"""
cursor = self.textCursor()
start_pos, end_pos = cursor.selectionStart(), cursor.selectionEnd()
cursor.setPosition(start_pos)
cursor.setPosition(end_pos, QTextCursor.KeepAnchor)
if cursor.atBlockStart():
cursor.movePosition(QTextCursor.PreviousBlock,
QTextCursor.KeepAnchor)
cursor.movePosition(QTextCursor.EndOfBlock,
QTextCursor.KeepAnchor)
self.setTextCursor(cursor)
def delete_line(self):
"""Delete current line"""
cursor = self.textCursor()
if self.has_selected_text():
self.extend_selection_to_complete_lines()
start_pos, end_pos = cursor.selectionStart(), cursor.selectionEnd()
cursor.setPosition(start_pos)
else:
start_pos = end_pos = cursor.position()
cursor.beginEditBlock()
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
while cursor.position() <= end_pos:
cursor.movePosition(QTextCursor.EndOfBlock, QTextCursor.KeepAnchor)
if cursor.atEnd():
break
cursor.movePosition(QTextCursor.NextBlock, QTextCursor.KeepAnchor)
cursor.removeSelectedText()
cursor.endEditBlock()
self.ensureCursorVisible()
#------Code completion / Calltips
def hide_tooltip_if_necessary(self, key):
"""Hide calltip when necessary"""
try:
calltip_char = self.get_character(self.calltip_position)
before = self.is_cursor_before(self.calltip_position,
char_offset=1)
other = key in (Qt.Key_ParenRight, Qt.Key_Period, Qt.Key_Tab)
if calltip_char not in ('?', '(') or before or other:
QToolTip.hideText()
except (IndexError, TypeError):
QToolTip.hideText()
def show_completion_widget(self, textlist, automatic=True):
"""Show completion widget"""
self.completion_widget.show_list(textlist, automatic=automatic)
def hide_completion_widget(self):
"""Hide completion widget"""
self.completion_widget.hide()
def show_completion_list(self, completions, completion_text="",
automatic=True):
"""Display the possible completions"""
if len(completions) == 0 or completions == [completion_text]:
return
self.completion_text = completion_text
# Sorting completion list (entries starting with underscore are
# put at the end of the list):
underscore = set([comp for comp in completions
if comp.startswith('_')])
completions = sorted(set(completions)-underscore, key=str_lower)+\
sorted(underscore, key=str_lower)
self.show_completion_widget(completions, automatic=automatic)
def select_completion_list(self):
"""Completion list is active, Enter was just pressed"""
self.completion_widget.item_selected()
def insert_completion(self, text):
if text:
cursor = self.textCursor()
cursor.movePosition(QTextCursor.PreviousCharacter,
QTextCursor.KeepAnchor,
len(self.completion_text))
cursor.removeSelectedText()
self.insert_text(text)
def is_completion_widget_visible(self):
"""Return True is completion list widget is visible"""
return self.completion_widget.isVisible()
#------Standard keys
def stdkey_clear(self):
if not self.has_selected_text():
self.moveCursor(QTextCursor.NextCharacter, QTextCursor.KeepAnchor)
self.remove_selected_text()
def stdkey_backspace(self):
if not self.has_selected_text():
self.moveCursor(QTextCursor.PreviousCharacter,
QTextCursor.KeepAnchor)
self.remove_selected_text()
def __get_move_mode(self, shift):
return QTextCursor.KeepAnchor if shift else QTextCursor.MoveAnchor
def stdkey_up(self, shift):
self.moveCursor(QTextCursor.Up, self.__get_move_mode(shift))
def stdkey_down(self, shift):
self.moveCursor(QTextCursor.Down, self.__get_move_mode(shift))
def stdkey_tab(self):
self.insert_text(self.indent_chars)
def stdkey_home(self, shift, ctrl, prompt_pos=None):
"""Smart HOME feature: cursor is first moved at
indentation position, then at the start of the line"""
move_mode = self.__get_move_mode(shift)
if ctrl:
self.moveCursor(QTextCursor.Start, move_mode)
else:
cursor = self.textCursor()
if prompt_pos is None:
start_position = self.get_position('sol')
else:
start_position = self.get_position(prompt_pos)
text = self.get_text(start_position, 'eol')
indent_pos = start_position+len(text)-len(text.lstrip())
if cursor.position() != indent_pos:
cursor.setPosition(indent_pos, move_mode)
else:
cursor.setPosition(start_position, move_mode)
self.setTextCursor(cursor)
def stdkey_end(self, shift, ctrl):
move_mode = self.__get_move_mode(shift)
if ctrl:
self.moveCursor(QTextCursor.End, move_mode)
else:
self.moveCursor(QTextCursor.EndOfBlock, move_mode)
def stdkey_pageup(self):
pass
def stdkey_pagedown(self):
pass
def stdkey_escape(self):
pass
#----Qt Events
def mousePressEvent(self, event):
"""Reimplement Qt method"""
if sys.platform.startswith('linux') and event.button() == Qt.MidButton:
self.calltip_widget.hide()
if self.has_selected_text():
self.remove_selected_text()
self.setFocus()
event = QMouseEvent(QEvent.MouseButtonPress, event.pos(),
Qt.LeftButton, Qt.LeftButton, Qt.NoModifier)
QPlainTextEdit.mousePressEvent(self, event)
QPlainTextEdit.mouseReleaseEvent(self, event)
# Send selection text to clipboard to be able to use
# the paste method and avoid the strange Issue 1445
#
# Note: This issue seems a focusing problem but it
# seems really hard to track
mode_clip = QClipboard.Clipboard
mode_sel = QClipboard.Selection
text_clip = QApplication.clipboard().text(mode=mode_clip)
text_sel = QApplication.clipboard().text(mode=mode_sel)
QApplication.clipboard().setText(text_sel, mode=mode_clip)
self.paste()
QApplication.clipboard().setText(text_clip, mode=mode_clip)
else:
self.calltip_widget.hide()
QPlainTextEdit.mousePressEvent(self, event)
def focusInEvent(self, event):
"""Reimplemented to handle focus"""
self.emit(SIGNAL("focus_changed()"))
self.emit(SIGNAL("focus_in()"))
self.highlight_current_cell()
QPlainTextEdit.focusInEvent(self, event)
def focusOutEvent(self, event):
"""Reimplemented to handle focus"""
self.emit(SIGNAL("focus_changed()"))
QPlainTextEdit.focusOutEvent(self, event)
def wheelEvent(self, event):
"""Reimplemented to emit zoom in/out signals when Ctrl is pressed"""
# This feature is disabled on MacOS, see Issue 1510:
# http://code.google.com/p/spyderlib/issues/detail?id=1510
if sys.platform != 'darwin':
if event.modifiers() & Qt.ControlModifier:
if event.delta() < 0:
self.emit(SIGNAL("zoom_out()"))
elif event.delta() > 0:
self.emit(SIGNAL("zoom_in()"))
return
QPlainTextEdit.wheelEvent(self, event)
self.highlight_current_cell()
class TextEditBaseWidget(QPlainTextEdit, BaseEditMixin):
"""Text edit base widget"""
BRACE_MATCHING_SCOPE = ('sof', 'eof')
def __init__(self, parent=None):
QPlainTextEdit.__init__(self, parent)
BaseEditMixin.__init__(self)
self.setAttribute(Qt.WA_DeleteOnClose)
self.extra_selections_dict = {}
self.connect(self, SIGNAL('textChanged()'), self.changed)
self.connect(self, SIGNAL('cursorPositionChanged()'),
self.cursor_position_changed)
self.indent_chars = " " * 4
# Code completion / calltips
if parent is not None:
mainwin = parent
while not isinstance(mainwin, QMainWindow):
mainwin = mainwin.parent()
if mainwin is None:
break
if mainwin is not None:
parent = mainwin
self.completion_widget = CompletionWidget(self, parent)
self.codecompletion_auto = False
self.codecompletion_case = True
self.codecompletion_enter = False
self.calltips = True
self.calltip_position = None
self.has_cell_separators = False
self.cell_separators = None
self.completion_text = ""
self.calltip_widget = CallTipWidget(self, hide_timer_on=True)
# The color values may be overridden by the syntax highlighter
# Highlight current line color
self.currentline_color = QColor(Qt.red).lighter(190)
self.currentcell_color = QColor(Qt.red).lighter(194)
# Brace matching
self.bracepos = None
self.matched_p_color = QColor(Qt.green)
self.unmatched_p_color = QColor(Qt.red)
def setup_completion(self, size=None, font=None):
self.completion_widget.setup_appearance(size, font)
def set_indent_chars(self, indent_chars):
self.indent_chars = indent_chars
def set_palette(self, background, foreground):
"""
Set text editor palette colors:
background color and caret (text cursor) color
"""
palette = QPalette()
palette.setColor(QPalette.Base, background)
palette.setColor(QPalette.Text, foreground)
self.setPalette(palette)
#------Extra selections
def get_extra_selections(self, key):
return self.extra_selections_dict.get(key, [])
def set_extra_selections(self, key, extra_selections):
self.extra_selections_dict[key] = extra_selections
def update_extra_selections(self):
extra_selections = []
for key, extra in list(self.extra_selections_dict.items()):
if key == 'current_line' or key == 'current_cell':
# Python 3 compatibility (weird): current line has to be
# highlighted first
extra_selections = extra + extra_selections
else:
extra_selections += extra
self.setExtraSelections(extra_selections)
def clear_extra_selections(self, key):
self.extra_selections_dict[key] = []
self.update_extra_selections()
def changed(self):
"""Emit changed signal"""
self.emit(SIGNAL('modificationChanged(bool)'),
self.document().isModified())
#------Highlight current line
def highlight_current_line(self):
"""Highlight current line"""
selection = QTextEdit.ExtraSelection()
selection.format.setProperty(QTextFormat.FullWidthSelection,
to_qvariant(True))
selection.format.setBackground(self.currentline_color)
selection.cursor = self.textCursor()
selection.cursor.clearSelection()
self.set_extra_selections('current_line', [selection])
self.update_extra_selections()
def unhighlight_current_line(self):
"""Unhighlight current line"""
self.clear_extra_selections('current_line')
#------Highlight current cell
def highlight_current_cell(self):
"""Highlight current cell"""
if self.cell_separators is None:
return
selection = QTextEdit.ExtraSelection()
selection.format.setProperty(QTextFormat.FullWidthSelection,
to_qvariant(True))
selection.format.setBackground(self.currentcell_color)
selection.cursor, whole_file_selected, whole_screen_selected =\
self.select_current_cell_in_visible_portion()
if whole_file_selected:
self.clear_extra_selections('current_cell')
elif whole_screen_selected:
if self.has_cell_separators:
self.set_extra_selections('current_cell', [selection])
self.update_extra_selections()
else:
self.clear_extra_selections('current_cell')
else:
self.set_extra_selections('current_cell', [selection])
self.update_extra_selections()
def unhighlight_current_cell(self):
"""Unhighlight current cell"""
self.clear_extra_selections('current_cell')
#------Brace matching
def find_brace_match(self, position, brace, forward):
start_pos, end_pos = self.BRACE_MATCHING_SCOPE
if forward:
bracemap = {'(': ')', '[': ']', '{': '}'}
text = self.get_text(position, end_pos)
i_start_open = 1
i_start_close = 1
else:
bracemap = {')': '(', ']': '[', '}': '{'}
text = self.get_text(start_pos, position)
i_start_open = len(text) - 1
i_start_close = len(text) - 1
while True:
if forward:
i_close = text.find(bracemap[brace], i_start_close)
else:
i_close = text.rfind(bracemap[brace], 0, i_start_close + 1)
if i_close > -1:
if forward:
i_start_close = i_close + 1
i_open = text.find(brace, i_start_open, i_close)
else:
i_start_close = i_close - 1
i_open = text.rfind(brace, i_close, i_start_open + 1)
if i_open > -1:
if forward:
i_start_open = i_open + 1
else:
i_start_open = i_open - 1
else:
# found matching brace
if forward:
return position + i_close
else:
return position - (len(text) - i_close)
else:
# no matching brace
return
def __highlight(self, positions, color=None, cancel=False):
if cancel:
self.clear_extra_selections('brace_matching')
return
extra_selections = []
for position in positions:
if position > self.get_position('eof'):
return
selection = QTextEdit.ExtraSelection()
selection.format.setBackground(color)
selection.cursor = self.textCursor()
selection.cursor.clearSelection()
selection.cursor.setPosition(position)
selection.cursor.movePosition(QTextCursor.NextCharacter,
QTextCursor.KeepAnchor)
extra_selections.append(selection)
self.set_extra_selections('brace_matching', extra_selections)
self.update_extra_selections()
def cursor_position_changed(self):
"""Brace matching"""
if self.bracepos is not None:
self.__highlight(self.bracepos, cancel=True)
self.bracepos = None
cursor = self.textCursor()
if cursor.position() == 0:
return
cursor.movePosition(QTextCursor.PreviousCharacter,
QTextCursor.KeepAnchor)
text = to_text_string(cursor.selectedText())
pos1 = cursor.position()
if text in (')', ']', '}'):
pos2 = self.find_brace_match(pos1, text, forward=False)
elif text in ('(', '[', '{'):
pos2 = self.find_brace_match(pos1, text, forward=True)
else:
return
if pos2 is not None:
self.bracepos = (pos1, pos2)
self.__highlight(self.bracepos, color=self.matched_p_color)
else:
self.bracepos = (pos1, )
self.__highlight(self.bracepos, color=self.unmatched_p_color)
#-----Widget setup and options
def set_codecompletion_auto(self, state):
"""Set code completion state"""
self.codecompletion_auto = state
def set_codecompletion_case(self, state):
"""Case sensitive completion"""
self.codecompletion_case = state
self.completion_widget.case_sensitive = state
def set_codecompletion_enter(self, state):
"""Enable Enter key to select completion"""
self.codecompletion_enter = state
self.completion_widget.enter_select = state
def set_calltips(self, state):
"""Set calltips state"""
self.calltips = state
def set_wrap_mode(self, mode=None):
"""
Set wrap mode
Valid *mode* values: None, 'word', 'character'
"""
if mode == 'word':
wrap_mode = QTextOption.WrapAtWordBoundaryOrAnywhere
elif mode == 'character':
wrap_mode = QTextOption.WrapAnywhere
else:
wrap_mode = QTextOption.NoWrap
self.setWordWrapMode(wrap_mode)
#------Reimplementing Qt methods
def copy(self):
"""
Reimplement Qt method
Copy text to clipboard with correct EOL chars
"""
QApplication.clipboard().setText(self.get_selected_text())
#------Text: get, set, ...
def get_selection_as_executable_code(self):
"""Return selected text as a processed text,
to be executable in a Python/IPython interpreter"""
ls = self.get_line_separator()
_indent = lambda line: len(line) - len(line.lstrip())
line_from, line_to = self.get_selection_bounds()
text = self.get_selected_text()
if not text:
return
lines = text.split(ls)
if len(lines) > 1:
# Multiline selection -> eventually fixing indentation
original_indent = _indent(self.get_text_line(line_from))
text = (" " * (original_indent - _indent(lines[0]))) + text
# If there is a common indent to all lines, find it.
# Moving from bottom line to top line ensures that blank
# lines inherit the indent of the line *below* it,
# which is the desired behavior.
min_indent = 999
current_indent = 0
lines = text.split(ls)
for i in range(len(lines) - 1, -1, -1):
line = lines[i]
if line.strip():
current_indent = _indent(line)
min_indent = min(current_indent, min_indent)
else:
lines[i] = ' ' * current_indent
if min_indent:
lines = [line[min_indent:] for line in lines]
# Remove any leading whitespace or comment lines
# since they confuse the reserved word detector that follows below
while lines:
first_line = lines[0].lstrip()
if first_line == '' or first_line[0] == '#':
lines.pop(0)
else:
break
# Add an EOL character after indentation blocks that start with some
# Python reserved words, so that it gets evaluated automatically
# by the console
varname = re.compile('[a-zA-Z0-9_]*') # matches valid variable names
maybe = False
nextexcept = ()
for n, line in enumerate(lines):
if not _indent(line):
word = varname.match(line).group()
if maybe and word not in nextexcept:
lines[n - 1] += ls
maybe = False
if word:
if word in ('def', 'for', 'while', 'with', 'class'):
maybe = True
nextexcept = ()
elif word == 'if':
maybe = True
nextexcept = ('elif', 'else')
elif word == 'try':
maybe = True
nextexcept = ('except', 'finally')
if maybe:
if lines[-1].strip() == '':
lines[-1] += ls
else:
lines.append(ls)
return ls.join(lines)
def get_cell_as_executable_code(self):
"""Return cell contents as executable code"""
start_pos, end_pos = self.__save_selection()
cursor, whole_file_selected = self.select_current_cell()
if not whole_file_selected:
self.setTextCursor(cursor)
text = self.get_selection_as_executable_code()
self.__restore_selection(start_pos, end_pos)
return text
def is_cell_separator(self, cursor=None, block=None):
"""Return True if cursor (or text block) is on a block separator"""
assert cursor is not None or block is not None
if cursor is not None:
cursor0 = QTextCursor(cursor)
cursor0.select(QTextCursor.BlockUnderCursor)
text = to_text_string(cursor0.selectedText())
else:
text = to_text_string(block.text())
if self.cell_separators is None:
return False
else:
return text.lstrip().startswith(self.cell_separators)
def select_current_cell(self):
"""Select cell under cursor
cell = group of lines separated by CELL_SEPARATORS
returns the textCursor and a boolean indicating if the
entire file is selected"""
cursor = self.textCursor()
cursor.movePosition(QTextCursor.StartOfBlock)
cur_pos = prev_pos = cursor.position()
# Moving to the next line that is not a separator, if we are
# exactly at one of them
while self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.NextBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
return cursor, False
prev_pos = cur_pos
# If not, move backwards to find the previous separator
while not self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.PreviousBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
if self.is_cell_separator(cursor):
return cursor, False
else:
break
cursor.setPosition(prev_pos)
cell_at_file_start = cursor.atStart()
# Once we find it (or reach the beginning of the file)
# move to the next separator (or the end of the file)
# so we can grab the cell contents
while not self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.NextBlock, QTextCursor.KeepAnchor)
cur_pos = cursor.position()
if cur_pos == prev_pos:
cursor.movePosition(QTextCursor.EndOfBlock,
QTextCursor.KeepAnchor)
break
prev_pos = cur_pos
cell_at_file_end = cursor.atEnd()
return cursor, cell_at_file_start and cell_at_file_end
def select_current_cell_in_visible_portion(self):
"""Select cell under cursor in the visible portion of the file
cell = group of lines separated by CELL_SEPARATORS
returns
-the textCursor
-a boolean indicating if the entire file is selected
-a boolean indicating if the entire visible portion of the file is selected"""
cursor = self.textCursor()
cursor.movePosition(QTextCursor.StartOfBlock)
cur_pos = prev_pos = cursor.position()
beg_pos = self.cursorForPosition(QPoint(0, 0)).position()
bottom_right = QPoint(self.viewport().width() - 1,
self.viewport().height() - 1)
end_pos = self.cursorForPosition(bottom_right).position()
# Moving to the next line that is not a separator, if we are
# exactly at one of them
while self.is_cell_separator(cursor):
cursor.movePosition(QTextCursor.NextBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
return cursor, False, False
prev_pos = cur_pos
# If not, move backwards to find the previous separator
while not self.is_cell_separator(cursor)\
and cursor.position() >= beg_pos:
cursor.movePosition(QTextCursor.PreviousBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
if self.is_cell_separator(cursor):
return cursor, False, False
else:
break
cell_at_screen_start = cursor.position() <= beg_pos
cursor.setPosition(prev_pos)
cell_at_file_start = cursor.atStart()
# Selecting cell header
if not cell_at_file_start:
cursor.movePosition(QTextCursor.PreviousBlock)
cursor.movePosition(QTextCursor.NextBlock, QTextCursor.KeepAnchor)
# Once we find it (or reach the beginning of the file)
# move to the next separator (or the end of the file)
# so we can grab the cell contents
while not self.is_cell_separator(cursor)\
and cursor.position() <= end_pos:
cursor.movePosition(QTextCursor.NextBlock, QTextCursor.KeepAnchor)
cur_pos = cursor.position()
if cur_pos == prev_pos:
cursor.movePosition(QTextCursor.EndOfBlock,
QTextCursor.KeepAnchor)
break
prev_pos = cur_pos
cell_at_file_end = cursor.atEnd()
cell_at_screen_end = cursor.position() >= end_pos
return cursor,\
cell_at_file_start and cell_at_file_end,\
cell_at_screen_start and cell_at_screen_end
def go_to_next_cell(self):
"""Go to the next cell of lines"""
cursor = self.textCursor()
cursor.movePosition(QTextCursor.NextBlock)
cur_pos = prev_pos = cursor.position()
while not self.is_cell_separator(cursor):
# Moving to the next code cell
cursor.movePosition(QTextCursor.NextBlock)
prev_pos = cur_pos
cur_pos = cursor.position()
if cur_pos == prev_pos:
return
self.setTextCursor(cursor)
def get_line_count(self):
"""Return document total line number"""
return self.blockCount()
def __save_selection(self):
"""Save current cursor selection and return position bounds"""
cursor = self.textCursor()
return cursor.selectionStart(), cursor.selectionEnd()
def __restore_selection(self, start_pos, end_pos):
"""Restore cursor selection from position bounds"""
cursor = self.textCursor()
cursor.setPosition(start_pos)
cursor.setPosition(end_pos, QTextCursor.KeepAnchor)
self.setTextCursor(cursor)
def __duplicate_line_or_selection(self, after_current_line=True):
"""Duplicate current line or selected text"""
cursor = self.textCursor()
cursor.beginEditBlock()
start_pos, end_pos = self.__save_selection()
if to_text_string(cursor.selectedText()):
cursor.setPosition(end_pos)
# Check if end_pos is at the start of a block: if so, starting
# changes from the previous block
cursor.movePosition(QTextCursor.StartOfBlock,
QTextCursor.KeepAnchor)
if not to_text_string(cursor.selectedText()):
cursor.movePosition(QTextCursor.PreviousBlock)
end_pos = cursor.position()
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
while cursor.position() <= end_pos:
cursor.movePosition(QTextCursor.EndOfBlock, QTextCursor.KeepAnchor)
if cursor.atEnd():
cursor_temp = QTextCursor(cursor)
cursor_temp.clearSelection()
cursor_temp.insertText(self.get_line_separator())
break
cursor.movePosition(QTextCursor.NextBlock, QTextCursor.KeepAnchor)
text = cursor.selectedText()
cursor.clearSelection()
if not after_current_line:
# Moving cursor before current line/selected text
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
start_pos += len(text)
end_pos += len(text)
cursor.insertText(text)
cursor.endEditBlock()
self.setTextCursor(cursor)
self.__restore_selection(start_pos, end_pos)
def duplicate_line(self):
"""
Duplicate current line or selected text
Paste the duplicated text *after* the current line/selected text
"""
self.__duplicate_line_or_selection(after_current_line=True)
def copy_line(self):
"""
Copy current line or selected text
Paste the duplicated text *before* the current line/selected text
"""
self.__duplicate_line_or_selection(after_current_line=False)
def __move_line_or_selection(self, after_current_line=True):
"""Move current line or selected text"""
cursor = self.textCursor()
cursor.beginEditBlock()
start_pos, end_pos = self.__save_selection()
if to_text_string(cursor.selectedText()):
# Check if start_pos is at the start of a block
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
start_pos = cursor.position()
cursor.setPosition(end_pos)
# Check if end_pos is at the start of a block: if so, starting
# changes from the previous block
cursor.movePosition(QTextCursor.StartOfBlock,
QTextCursor.KeepAnchor)
if to_text_string(cursor.selectedText()):
cursor.movePosition(QTextCursor.NextBlock)
end_pos = cursor.position()
else:
cursor.movePosition(QTextCursor.StartOfBlock)
start_pos = cursor.position()
cursor.movePosition(QTextCursor.NextBlock)
end_pos = cursor.position()
cursor.setPosition(start_pos)
cursor.setPosition(end_pos, QTextCursor.KeepAnchor)
sel_text = to_text_string(cursor.selectedText())
cursor.removeSelectedText()
if after_current_line:
text = to_text_string(cursor.block().text())
start_pos += len(text) + 1
end_pos += len(text) + 1
cursor.movePosition(QTextCursor.NextBlock)
else:
cursor.movePosition(QTextCursor.PreviousBlock)
text = to_text_string(cursor.block().text())
start_pos -= len(text) + 1
end_pos -= len(text) + 1
cursor.insertText(sel_text)
cursor.endEditBlock()
self.setTextCursor(cursor)
self.__restore_selection(start_pos, end_pos)
def move_line_up(self):
"""Move up current line or selected text"""
self.__move_line_or_selection(after_current_line=False)
def move_line_down(self):
"""Move down current line or selected text"""
self.__move_line_or_selection(after_current_line=True)
def extend_selection_to_complete_lines(self):
"""Extend current selection to complete lines"""
cursor = self.textCursor()
start_pos, end_pos = cursor.selectionStart(), cursor.selectionEnd()
cursor.setPosition(start_pos)
cursor.setPosition(end_pos, QTextCursor.KeepAnchor)
if cursor.atBlockStart():
cursor.movePosition(QTextCursor.PreviousBlock,
QTextCursor.KeepAnchor)
cursor.movePosition(QTextCursor.EndOfBlock, QTextCursor.KeepAnchor)
self.setTextCursor(cursor)
def delete_line(self):
"""Delete current line"""
cursor = self.textCursor()
if self.has_selected_text():
self.extend_selection_to_complete_lines()
start_pos, end_pos = cursor.selectionStart(), cursor.selectionEnd()
cursor.setPosition(start_pos)
else:
start_pos = end_pos = cursor.position()
cursor.beginEditBlock()
cursor.setPosition(start_pos)
cursor.movePosition(QTextCursor.StartOfBlock)
while cursor.position() <= end_pos:
cursor.movePosition(QTextCursor.EndOfBlock, QTextCursor.KeepAnchor)
if cursor.atEnd():
break
cursor.movePosition(QTextCursor.NextBlock, QTextCursor.KeepAnchor)
cursor.removeSelectedText()
cursor.endEditBlock()
self.ensureCursorVisible()
#------Code completion / Calltips
def hide_tooltip_if_necessary(self, key):
"""Hide calltip when necessary"""
try:
calltip_char = self.get_character(self.calltip_position)
before = self.is_cursor_before(self.calltip_position,
char_offset=1)
other = key in (Qt.Key_ParenRight, Qt.Key_Period, Qt.Key_Tab)
if calltip_char not in ('?', '(') or before or other:
QToolTip.hideText()
except (IndexError, TypeError):
QToolTip.hideText()
def show_completion_widget(self, textlist, automatic=True):
"""Show completion widget"""
self.completion_widget.show_list(textlist, automatic=automatic)
def hide_completion_widget(self):
"""Hide completion widget"""
self.completion_widget.hide()
def show_completion_list(self,
completions,
completion_text="",
automatic=True):
"""Display the possible completions"""
if len(completions) == 0 or completions == [completion_text]:
return
self.completion_text = completion_text
# Sorting completion list (entries starting with underscore are
# put at the end of the list):
underscore = set(
[comp for comp in completions if comp.startswith('_')])
completions = sorted(set(completions)-underscore, key=str_lower)+\
sorted(underscore, key=str_lower)
self.show_completion_widget(completions, automatic=automatic)
def select_completion_list(self):
"""Completion list is active, Enter was just pressed"""
self.completion_widget.item_selected()
def insert_completion(self, text):
if text:
cursor = self.textCursor()
cursor.movePosition(QTextCursor.PreviousCharacter,
QTextCursor.KeepAnchor,
len(self.completion_text))
cursor.removeSelectedText()
self.insert_text(text)
def is_completion_widget_visible(self):
"""Return True is completion list widget is visible"""
return self.completion_widget.isVisible()
#------Standard keys
def stdkey_clear(self):
if not self.has_selected_text():
self.moveCursor(QTextCursor.NextCharacter, QTextCursor.KeepAnchor)
self.remove_selected_text()
def stdkey_backspace(self):
if not self.has_selected_text():
self.moveCursor(QTextCursor.PreviousCharacter,
QTextCursor.KeepAnchor)
self.remove_selected_text()
def __get_move_mode(self, shift):
return QTextCursor.KeepAnchor if shift else QTextCursor.MoveAnchor
def stdkey_up(self, shift):
self.moveCursor(QTextCursor.Up, self.__get_move_mode(shift))
def stdkey_down(self, shift):
self.moveCursor(QTextCursor.Down, self.__get_move_mode(shift))
def stdkey_tab(self):
self.insert_text(self.indent_chars)
def stdkey_home(self, shift, ctrl, prompt_pos=None):
"""Smart HOME feature: cursor is first moved at
indentation position, then at the start of the line"""
move_mode = self.__get_move_mode(shift)
if ctrl:
self.moveCursor(QTextCursor.Start, move_mode)
else:
cursor = self.textCursor()
if prompt_pos is None:
start_position = self.get_position('sol')
else:
start_position = self.get_position(prompt_pos)
text = self.get_text(start_position, 'eol')
indent_pos = start_position + len(text) - len(text.lstrip())
if cursor.position() != indent_pos:
cursor.setPosition(indent_pos, move_mode)
else:
cursor.setPosition(start_position, move_mode)
self.setTextCursor(cursor)
def stdkey_end(self, shift, ctrl):
move_mode = self.__get_move_mode(shift)
if ctrl:
self.moveCursor(QTextCursor.End, move_mode)
else:
self.moveCursor(QTextCursor.EndOfBlock, move_mode)
def stdkey_pageup(self):
pass
def stdkey_pagedown(self):
pass
def stdkey_escape(self):
pass
#----Qt Events
def mousePressEvent(self, event):
"""Reimplement Qt method"""
if sys.platform.startswith('linux') and event.button() == Qt.MidButton:
self.calltip_widget.hide()
if self.has_selected_text():
self.remove_selected_text()
self.setFocus()
event = QMouseEvent(QEvent.MouseButtonPress, event.pos(),
Qt.LeftButton, Qt.LeftButton, Qt.NoModifier)
QPlainTextEdit.mousePressEvent(self, event)
QPlainTextEdit.mouseReleaseEvent(self, event)
# Send selection text to clipboard to be able to use
# the paste method and avoid the strange Issue 1445
#
# Note: This issue seems a focusing problem but it
# seems really hard to track
mode_clip = QClipboard.Clipboard
mode_sel = QClipboard.Selection
text_clip = QApplication.clipboard().text(mode=mode_clip)
text_sel = QApplication.clipboard().text(mode=mode_sel)
QApplication.clipboard().setText(text_sel, mode=mode_clip)
self.paste()
QApplication.clipboard().setText(text_clip, mode=mode_clip)
else:
self.calltip_widget.hide()
QPlainTextEdit.mousePressEvent(self, event)
def focusInEvent(self, event):
"""Reimplemented to handle focus"""
self.emit(SIGNAL("focus_changed()"))
self.emit(SIGNAL("focus_in()"))
self.highlight_current_cell()
QPlainTextEdit.focusInEvent(self, event)
def focusOutEvent(self, event):
"""Reimplemented to handle focus"""
self.emit(SIGNAL("focus_changed()"))
QPlainTextEdit.focusOutEvent(self, event)
def wheelEvent(self, event):
"""Reimplemented to emit zoom in/out signals when Ctrl is pressed"""
# This feature is disabled on MacOS, see Issue 1510:
# http://code.google.com/p/spyderlib/issues/detail?id=1510
if sys.platform != 'darwin':
if event.modifiers() & Qt.ControlModifier:
if event.delta() < 0:
self.emit(SIGNAL("zoom_out()"))
elif event.delta() > 0:
self.emit(SIGNAL("zoom_in()"))
return
QPlainTextEdit.wheelEvent(self, event)
self.highlight_current_cell()