def within_bullet(self, it):
"""Returns True if iter 'it' is within bullet phrase"""
if it.starts_line():
return True
else:
# handle case where it is within bullet
it2 = it.copy()
it2 = move_to_start_of_line(it2)
return self.par_has_bullet(it2) and \
it.get_offset() < it2.get_offset() + len(BULLET_STR)
def within_bullet(self, it):
"""Returns True if iter 'it' is within bullet phrase"""
if it.starts_line():
return True
else:
# handle case where it is within bullet
it2 = it.copy()
it2 = move_to_start_of_line(it2)
return self.par_has_bullet(it2) and \
it.get_offset() < it2.get_offset() + len(BULLET_STR)
def is_insert_allowed(self, it, text=""):
"""Returns True if insertion is allowed at iter 'it'"""
# check to make sure insert is not in front of bullet
it2 = it.copy()
it2 = move_to_start_of_line(it2)
if self.par_has_bullet(it2):
if it.starts_line() and text.endswith("\n"):
return True
else:
return not self.within_bullet(it)
else:
return True
def is_insert_allowed(self, it, text=""):
"""Returns True if insertion is allowed at iter 'it'"""
# check to make sure insert is not in front of bullet
it2 = it.copy()
it2 = move_to_start_of_line(it2)
if self.par_has_bullet(it2):
if it.starts_line() and text.endswith("\n"):
return True
else:
return not self.within_bullet(it)
else:
return True
def update_indentation(self):
"""Ensure the indentation tags between start and end are up to date"""
# fixup indentation tags
# The general rule is that the indentation at the start of
# each paragraph should determines the indentation of the rest
# of the paragraph
# if no indentation requests are queued then do nothing
if not self._indent_update:
return
self._indent_update = False
self._buf.begin_user_action()
self._buf.begin_noninteractive()
# get range of updating
pos = self._buf.get_iter_at_mark(self._indent_update_start)
end = self._buf.get_iter_at_mark(self._indent_update_end)
pos = move_to_start_of_line(pos)
end.forward_line()
# iterate through the paragraphs that need updating
for pos in paragraph_iter(self._buf, pos, end):
par_end = pos.copy()
par_end.forward_line()
indent_tag = self.get_indent_tag(pos)
# remove bullets mid paragraph
it = pos.copy()
it.forward_char()
while True:
match = it.forward_search(BULLET_STR, 0, par_end)
if not match:
it.backward_char()
pos, par_end = get_paragraph(it)
break
self._buf.move_mark(self._indent_update_start, match[0])
self._buf.delete(match[0], match[1])
it = self._buf.get_iter_at_mark(self._indent_update_start)
par_end = it.copy()
par_end.forward_line()
# check indentation
if indent_tag is None:
# remove all indent tags
# TODO: RichTextBaseBuffer function
self._buf.clear_tag_class(
self._buf.tag_table.lookup(RichTextIndentTag.tag_name(1)),
pos, par_end)
# remove bullets
par_type = "none"
else:
self._buf.clear_tag_class(indent_tag, pos, par_end)
self._buf.apply_tag(indent_tag, pos, par_end)
# check for bullets
par_type = indent_tag.get_par_indent()
# check paragraph type
if par_type == "bullet":
# ensure proper bullet is in place
pos = self._insert_bullet(pos, indent_tag)
elif par_type == "none":
# remove bullets
pos = self._remove_bullet(pos)
else:
raise Exception("unknown par_type '%s'" % par_type)
#self._updating = False
self._buf.end_noninteractive()
self._buf.end_user_action()
def on_paragraph_change(self, start, end):
"""Callback for when the tags of a paragraph changes"""
start = move_to_start_of_line(start.copy())
end = move_to_end_of_line(end.copy())
self._queue_update_indentation(start, end)
def update_indentation(self):
"""Ensure the indentation tags between start and end are up to date"""
# fixup indentation tags
# The general rule is that the indentation at the start of
# each paragraph should determines the indentation of the rest
# of the paragraph
# if no indentation requests are queued then do nothing
if not self._indent_update:
return
self._indent_update = False
self._buf.begin_user_action()
self._buf.begin_noninteractive()
# get range of updating
pos = self._buf.get_iter_at_mark(self._indent_update_start)
end = self._buf.get_iter_at_mark(self._indent_update_end)
pos = move_to_start_of_line(pos)
end.forward_line()
# iterate through the paragraphs that need updating
for pos in paragraph_iter(self._buf, pos, end):
par_end = pos.copy()
par_end.forward_line()
indent_tag = self.get_indent_tag(pos)
# remove bullets mid paragraph
it = pos.copy()
it.forward_char()
while True:
match = it.forward_search(BULLET_STR, 0, par_end)
if not match:
it.backward_char()
pos, par_end = get_paragraph(it)
break
self._buf.move_mark(self._indent_update_start, match[0])
self._buf.delete(match[0], match[1])
it = self._buf.get_iter_at_mark(self._indent_update_start)
par_end = it.copy()
par_end.forward_line()
# check indentation
if indent_tag is None:
# remove all indent tags
# TODO: RichTextBaseBuffer function
self._buf.clear_tag_class(
self._buf.tag_table.lookup(
RichTextIndentTag.tag_name(1)),
pos, par_end)
# remove bullets
par_type = "none"
else:
self._buf.clear_tag_class(indent_tag, pos, par_end)
self._buf.apply_tag(indent_tag, pos, par_end)
# check for bullets
par_type = indent_tag.get_par_indent()
# check paragraph type
if par_type == "bullet":
# ensure proper bullet is in place
pos = self._insert_bullet(pos, indent_tag)
elif par_type == "none":
# remove bullets
pos = self._remove_bullet(pos)
else:
raise Exception("unknown par_type '%s'" % par_type)
#self._updating = False
self._buf.end_noninteractive()
self._buf.end_user_action()
def on_paragraph_change(self, start, end):
"""Callback for when the tags of a paragraph changes"""
start = move_to_start_of_line(start.copy())
end = move_to_end_of_line(end.copy())
self._queue_update_indentation(start, end)
