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  • Committer: goldenmyst
  • Date: 2007-12-12 19:09:11 UTC
  • Revision ID: goldenmyst@goldenmyst-desktop-20071212190911-h0ur0r6ls2oxufwd
Refactored delete line function

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Lines of Context:
plugins/Lines/lines.py
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@contact: mystilleef@gmail.com
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"""
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newlines = ["\n", "\x00", "\r\n", "\x0D\x0A", "\r"]
 
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def duplicate_line(textbuffer):
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        """
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        Duplicate line or selected lines.
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        return True
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def delete_line(textbuffer):
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        """
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        Delete a the cursor line in a gtk.TextBuffer.
 
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        textbuffer.begin_user_action()
 
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        try:
 
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                begin_position, end_position = get_line_bounds(textbuffer)
 
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                start_position = begin_position.copy()
 
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                begin_position, end_position = __get_end_line_position(begin_position)
 
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                textbuffer.delete(start_position, end_position)
 
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        except TypeError:
 
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                try:
 
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                        __delete_last_line(textbuffer)
 
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                except TypeError:
 
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                        pass
 
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        textbuffer.end_user_action()
 
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        return
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        @param textbuffer: The text buffer to operate on.
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        @type textbuffer: A gtk.TextBuffer object.
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        """
 
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def __delete_last_line(textbuffer):
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        begin_position, end_position = get_line_bounds(textbuffer)
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        if begin_position.ends_line():
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                # Delete empty line.
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                delete_empty_line(textbuffer)
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                return
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        if begin_position.ends_line() and end_position.ends_line():
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                # Delete empty second to last line.
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                delete_empty_line(textbuffer)
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                return
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        if begin_position.get_char() in ["\x00"] and end_position.get_char() in ["\x00"]:
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                # Delete empty last line.
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                delete_empty_last_line(textbuffer)
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                return
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        if begin_position.get_char() and end_position.get_char() in ["\x00"]:
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                # Delete last line with text on it.
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                delete_last_line(textbuffer)
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                return
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        # Delete normal lines.
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        end_position.forward_char()
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        textbuffer.begin_user_action()
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        textbuffer.delete(begin_position, end_position)
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        textbuffer.end_user_action()
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        return
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def delete_empty_line(textbuffer):
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        """
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        Delete an empty cursor line.
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        @param textbuffer: The text buffer to operate on.
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        @type textbuffer: A gtk.TextBuffer object.
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        """
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        from SCRIBES.cursor import get_cursor_line
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        cursor_line = get_cursor_line(textbuffer)
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        begin_position = textbuffer.get_iter_at_line(cursor_line)
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        end_position = begin_position.copy()
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        end_position.forward_char()
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        textbuffer.begin_user_action()
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        textbuffer.delete(begin_position, end_position)
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        textbuffer.end_user_action()
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        return
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def delete_empty_last_line(textbuffer):
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        """
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        Delete an empty last cursor line.
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        @param textbuffer: The text buffer to operate on.
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        @type textbuffer: A gtk.TextBuffer object.
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        """
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        begin_position, end_position = get_line_bounds(textbuffer)
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        result = begin_position.backward_line()
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        if result:
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                if begin_position.get_char() in ["\n"]:
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                        end_position = begin_position.copy()
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                        end_position.forward_char()
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                else:
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                        end_position = begin_position.copy()
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                        end_position.forward_to_line_end()
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                        end_position.forward_char()
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                        begin_position.forward_to_line_end()
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                textbuffer.begin_user_action()
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                textbuffer.delete(begin_position, end_position)
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                textbuffer.end_user_action()
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        return result
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def delete_last_line(textbuffer):
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        """
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        Delete the last cursor line if it contains text.
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        @param textbuffer: The text buffer to operate on.
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        @type textbuffer: A gtk.TextBuffer object.
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        """
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        begin_position, end_position = get_line_bounds(textbuffer)
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        end_position.forward_char()
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        textbuffer.begin_user_action()
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        textbuffer.delete(begin_position, end_position)
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        delete_empty_last_line(textbuffer)
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        textbuffer.end_user_action()
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        return
 
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                begin_position.backward_line()
 
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                begin_position, end_position = __get_end_line_position(begin_position)
 
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                textbuffer.delete(begin_position, end_position)
 
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        else:
 
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                textbuffer.delete(begin_position, end_position)
 
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                from SCRIBES.cursor import get_cursor_iterator
 
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                iterator = get_cursor_iterator(textbuffer)
 
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                iterator.backward_line()
 
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                start_position, end_position = __get_end_line_position(iterator)
 
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                textbuffer.delete(start_position, end_position)
 
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        return
 
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def __get_end_line_position(iterator):
 
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        from gtk import TEXT_SEARCH_VISIBLE_ONLY, TEXT_SEARCH_TEXT_ONLY
 
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        for endline in newlines:
 
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                try:
 
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                        begin_position, end_position = iterator.forward_search(endline, TEXT_SEARCH_TEXT_ONLY)
 
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                        return begin_position, end_position
 
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                except TypeError:
 
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                        continue
 
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        return None
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def join_line(textbuffer):
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        """