# -*- coding: utf-8 -*-

"""

Contains the python indenter.

"""

from pyqode.qt import QtGui

from pyqode.core.modes import IndenterMode

class PyIndenterMode(IndenterMode):

"""

Extends the core indenter to add the ability to always indent the whole

line instead of inserting a tab at the cursor position. This behaviour can

be turned off at runtime by setting :attr:`tab_always_indent` to False.

"""

@property

def tab_always_indent(self):

"""

When this flag is set to True, any call to indent will indent the whole

line instead of inserting a tab at the cursor position.

"""

return self._tab_always_indent

@tab_always_indent.setter

def tab_always_indent(self, value):

self._tab_always_indent = value

if self.editor:

for c in self.editor.clones:

try:

c.modes.get(self.__class__).tab_always_indent = value

except KeyError:

pass

def __init__(self):

super(PyIndenterMode, self).__init__()

self._tab_always_indent = None

self.tab_always_indent = True

def indent(self):

"""

Performs an indentation

"""

if not self.tab_always_indent:

super(PyIndenterMode, self).indent()

else:

cursor = self.editor.textCursor()

assert isinstance(cursor, QtGui.QTextCursor)

if cursor.hasSelection():

self.indent_selection(cursor)

else:

# simply insert indentation at the cursor position

tab_len = self.editor.tab_length

cursor.beginEditBlock()

if self.editor.use_spaces_instead_of_tabs:

cursor.insertText(tab_len * " ")

else:

cursor.insertText('\t')

cursor.endEditBlock()

self.editor.setTextCursor(cursor)

def unindent(self):

"""

Performs an un-indentation

"""

if self.tab_always_indent:

cursor = self.editor.textCursor()

if not cursor.hasSelection():

cursor.select(cursor.LineUnderCursor)

self.unindent_selection(cursor)

else:

super(PyIndenterMode, self).unindent()

def clone_settings(self, original):

self.tab_always_indent = original.tab_always_indent