# -*- coding: UTF-8 -*-
#
#       support.py
#
#       Copyright 2009-2016 Giuseppe Penone <giuspen@gmail.com>
#
#       This program is free software; you can redistribute it and/or modify
#       it under the terms of the GNU General Public License as published by
#       the Free Software Foundation; either version 3 of the License, or
#       (at your option) any later version.
#
#       This program is distributed in the hope that it will be useful,
#       but WITHOUT ANY WARRANTY; without even the implied warranty of
#       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#       GNU General Public License for more details.
#
#       You should have received a copy of the GNU General Public License
#       along with this program; if not, write to the Free Software
#       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#       MA 02110-1301, USA.

import gtk, pango, locale, os, webbrowser, re
import cons, config


def auto_decode_str(in_str, from_clipboard=False):
    """Try to Detect Encoding and Decode"""
    if in_str.startswith("\xEF\xBB\xBF"): # UTF-8 "BOM"
        encodings = ["utf-8-sig"]
    elif in_str.startswith(("\xFF\xFE", "\xFE\xFF")): # UTF-16 BOMs
        encodings = [cons.STR_UTF16]
    elif from_clipboard:
        encodings = [cons.STR_UTF8, cons.STR_UTF16]
    else:
        encodings = [cons.STR_UTF8, cons.STR_ISO_8859, cons.STR_UTF16, "utf-16le", locale.getdefaultlocale()[1]]
    for enc in encodings:
        try:
            out_str = in_str.decode(enc)
            print enc
            break
        except: pass
    else:
        out_str = unicode(in_str, cons.STR_UTF8, cons.STR_IGNORE)
    return out_str

def apply_tag_try_automatic_bounds(dad, text_buffer=None, iter_start=None):
    """Try to Select a Word Forward/Backward the Cursor"""
    if not text_buffer: text_buffer = dad.curr_buffer
    if not iter_start: iter_start = text_buffer.get_iter_at_mark(text_buffer.get_insert())
    iter_end = iter_start.copy()
    curr_char = iter_end.get_char()
    # 1) select alphanumeric + special
    match = re.match('\w', curr_char, re.UNICODE)
    if not match and not curr_char in dad.selword_chars:
        iter_start.backward_char()
        iter_end.backward_char()
        curr_char = iter_end.get_char()
        match = re.match('\w', curr_char, re.UNICODE)
        if not match and not curr_char in dad.selword_chars:
            return False
    while match or curr_char in dad.selword_chars:
        if not iter_end.forward_char(): break # end of buffer
        curr_char = iter_end.get_char()
        match = re.match('\w', curr_char, re.UNICODE)
    iter_start.backward_char()
    curr_char = iter_start.get_char()
    match = re.match('\w', curr_char, re.UNICODE)
    while match or curr_char in dad.selword_chars:
        if not iter_start.backward_char(): break # start of buffer
        curr_char = iter_start.get_char()
        match = re.match('\w', curr_char, re.UNICODE)
    if not match and not curr_char in dad.selword_chars: iter_start.forward_char()
    # 2) remove non alphanumeric from borders
    iter_end.backward_char()
    curr_char = iter_end.get_char()
    while curr_char in dad.selword_chars:
        if not iter_end.backward_char(): break # start of buffer
        curr_char = iter_end.get_char()
    iter_end.forward_char()
    curr_char = iter_start.get_char()
    while curr_char in dad.selword_chars:
        if not iter_start.forward_char(): break # end of buffer
        curr_char = iter_start.get_char()
    if iter_end.compare(iter_start) > 0:
        text_buffer.move_mark(text_buffer.get_insert(), iter_start)
        text_buffer.move_mark(text_buffer.get_selection_bound(), iter_end)
        return True
    return False

def on_sourceview_event_after_double_click_button1(dad, text_view, event):
    """Called after every Double Click with button 1"""
    text_buffer = text_view.get_buffer()
    x, y = text_view.window_to_buffer_coords(gtk.TEXT_WINDOW_TEXT, int(event.x), int(event.y))
    iter_start = text_view.get_iter_at_location(x, y)
    apply_tag_try_automatic_bounds(dad, text_buffer=text_buffer, iter_start=iter_start)

def on_sourceview_event_after_button_press(dad, text_view, event):
    """Called after every gtk.gdk.BUTTON_PRESS on the SourceView"""
    text_buffer = text_view.get_buffer()
    if event.button in [1, 2]:
        x, y = text_view.window_to_buffer_coords(gtk.TEXT_WINDOW_TEXT, int(event.x), int(event.y))
        text_iter = text_view.get_iter_at_location(x, y)
        tags = text_iter.get_tags()
        # check whether we are hovering a link
        if not tags: tags = []
        for tag in tags:
            tag_name = tag.get_property("name")
            if tag_name and tag_name[0:4] == cons.TAG_LINK:
                dad.link_clicked(tag_name[5:], event.button == 2)
                return False
        if dad.lists_handler.is_list_todo_beginning(text_iter):
            dad.lists_handler.todo_list_rotate_status(text_iter, text_buffer)
    elif event.button == 3 and not text_buffer.get_has_selection():
        x, y = text_view.window_to_buffer_coords(gtk.TEXT_WINDOW_TEXT, int(event.x), int(event.y))
        text_iter = text_view.get_iter_at_location(x, y)
        text_buffer.place_cursor(text_iter)
    return False

def on_sourceview_list_change_level(dad, iter_insert, list_info, text_buffer, level_increase):
    """Called at list indent/unindent time"""
    dad.user_active = False
    end_offset = dad.lists_handler.get_multiline_list_element_end_offset(iter_insert, list_info)
    curr_offset = list_info["startoffs"]
    curr_level = list_info["level"]
    next_level = curr_level+1 if level_increase else curr_level-1
    iter_start = text_buffer.get_iter_at_offset(curr_offset)
    prev_list_info = dad.lists_handler.get_prev_list_info_on_level(iter_start, next_level)
    #print prev_list_info
    if list_info["num"] != 0:
        bull_offset = curr_offset + 3*list_info["level"]
        if list_info["num"] < 0:
            if prev_list_info != None and prev_list_info["num"] < 0:
                bull_idx = prev_list_info["num"]*(-1) - 1
            else:
                idx_old = list_info["num"]*(-1) - 1
                idx_offset = idx_old - curr_level % cons.NUM_CHARS_LISTBUL
                bull_idx = (next_level + idx_offset) % cons.NUM_CHARS_LISTBUL
            dad.replace_text_at_offset(cons.CHARS_LISTBUL[bull_idx],
                bull_offset, bull_offset+1, text_buffer)
        else:
            idx = list_info["aux"]
            if prev_list_info != None and prev_list_info["num"] > 0:
                this_num = prev_list_info["num"] + 1
                index = prev_list_info["aux"]
            else:
                this_num = 1
                idx_old = list_info["aux"]
                idx_offset = idx_old - curr_level % cons.NUM_CHARS_LISTNUM
                index = (next_level + idx_offset) % cons.NUM_CHARS_LISTNUM
            text_to = str(this_num) + cons.CHARS_LISTNUM[index] + cons.CHAR_SPACE
            dad.replace_text_at_offset(text_to, bull_offset,
                bull_offset+dad.lists_handler.get_leading_chars_num(list_info["num"]), text_buffer)
    iter_start = text_buffer.get_iter_at_offset(curr_offset)
    #print "%s -> %s" % (curr_offset, end_offset)
    while curr_offset < end_offset:
        if level_increase:
            text_buffer.insert(iter_start, 3*cons.CHAR_SPACE)
            end_offset += 3
            iter_start = text_buffer.get_iter_at_offset(curr_offset+3)
        else:
            text_buffer.delete(iter_start, text_buffer.get_iter_at_offset(curr_offset+3))
            end_offset -= 3
            iter_start = text_buffer.get_iter_at_offset(curr_offset+1)
        if not dad.lists_handler.char_iter_forward_to_newline(iter_start) or not iter_start.forward_char():
            break
        curr_offset = iter_start.get_offset()
    dad.user_active = True
    dad.update_window_save_needed("nbuf", True)

def on_sourceview_event_after_key_press(dad, text_view, event):
    """Called after every gtk.gdk.KEY_PRESS on the SourceView"""
    text_buffer = text_view.get_buffer()
    keyname = gtk.gdk.keyval_name(event.keyval)
    if (event.state & gtk.gdk.SHIFT_MASK):
        if keyname == cons.STR_KEY_RETURN:
            iter_insert = text_buffer.get_iter_at_mark(text_buffer.get_insert())
            if not iter_insert: return False
            iter_start = iter_insert.copy()
            iter_start.backward_char()
            list_info = dad.lists_handler.get_paragraph_list_info(iter_start)
            if list_info:
                text_buffer.insert(text_buffer.get_iter_at_mark(text_buffer.get_insert()), 3*(1+list_info["level"])*cons.CHAR_SPACE)
    elif keyname in [cons.STR_KEY_RETURN, cons.STR_KEY_SPACE]:
        iter_insert = text_buffer.get_iter_at_mark(text_buffer.get_insert())
        if not iter_insert: return False
        iter_start = iter_insert.copy()
        if keyname == cons.STR_KEY_RETURN:
            cursor_key_press = iter_insert.get_offset()
            #print "cursor_key_press", cursor_key_press
            if cursor_key_press == dad.cursor_key_press:
                # problem of event-after called twice, once before really executing
                return False
            if not iter_start.backward_char(): return False
            if iter_start.get_char() != cons.CHAR_NEWLINE: return False
            if iter_start.backward_char() and iter_start.get_char() == cons.CHAR_NEWLINE:
                return False # former was an empty row
            list_info = dad.lists_handler.get_paragraph_list_info(iter_start)
            if not list_info:
                if dad.auto_indent:
                    iter_start = iter_insert.copy()
                    former_line_indent = get_former_line_indentation(iter_start)
                    if former_line_indent: text_buffer.insert_at_cursor(former_line_indent)
                return False # former was not a list
            # possible enter on empty list element
            insert_offset = iter_insert.get_offset()
            chars_to_startoffs = 1 + dad.lists_handler.get_leading_chars_num(list_info["num"]) + 3*list_info["level"]
            if (insert_offset - list_info["startoffs"]) == chars_to_startoffs:
                # enter on empty list element
                if list_info["level"] > 0:
                    on_sourceview_list_change_level(dad, iter_insert, list_info, text_buffer, False)
                    iter_insert = text_buffer.get_iter_at_mark(text_buffer.get_insert())
                    iter_list_quit = text_buffer.get_iter_at_offset(iter_insert.get_offset()-1)
                else:
                    iter_list_quit = text_buffer.get_iter_at_offset(list_info["startoffs"])
                text_buffer.delete(iter_list_quit, iter_insert)
                return False
            # list new element
            curr_level = list_info["level"]
            pre_spaces = 3*curr_level*cons.CHAR_SPACE if curr_level else ""
            if list_info["num"] < 0:
                index = list_info["num"]*(-1) - 1
                text_buffer.insert(iter_insert, pre_spaces+cons.CHARS_LISTBUL[index]+cons.CHAR_SPACE)
            elif list_info["num"] == 0:
                text_buffer.insert(iter_insert, pre_spaces+cons.CHAR_LISTTODO+cons.CHAR_SPACE)
            else:
                new_num = list_info["num"] + 1
                index = list_info["aux"]
                text_buffer.insert(iter_insert, pre_spaces + str(new_num) + cons.CHARS_LISTNUM[index] + cons.CHAR_SPACE)
                new_num += 1
                iter_start = text_buffer.get_iter_at_offset(insert_offset)
                dad.lists_handler.char_iter_forward_to_newline(iter_start)
                list_info = dad.lists_handler.get_next_list_info_on_level(iter_start, curr_level)
                #print list_info
                while list_info and list_info["num"] > 0:
                    iter_start = text_buffer.get_iter_at_offset(list_info["startoffs"])
                    end_offset = dad.lists_handler.get_multiline_list_element_end_offset(iter_start, list_info)
                    iter_end = text_buffer.get_iter_at_offset(end_offset)
                    iter_start, iter_end, chars_rm = dad.lists_handler.list_check_n_remove_old_list_type_leading(iter_start, iter_end, text_buffer)
                    end_offset -= chars_rm
                    text_buffer.insert(iter_start, str(new_num) + cons.CHARS_LISTNUM[index] + cons.CHAR_SPACE)
                    end_offset += dad.lists_handler.get_leading_chars_num(new_num)
                    iter_start = text_buffer.get_iter_at_offset(end_offset)
                    new_num += 1
                    list_info = dad.lists_handler.get_next_list_info_on_level(iter_start, curr_level)
        elif keyname == cons.STR_KEY_SPACE:
            if iter_start.backward_chars(2):
                if iter_start.get_char() == cons.CHAR_GREATER and iter_start.backward_char():
                    if iter_start.get_line_offset() == 0:
                        # at line start
                        if iter_start.get_char() == cons.CHAR_LESSER:
                            # "<> " becoming "◇ "
                            dad.special_char_replace(cons.CHARS_LISTBUL[1], iter_start, iter_insert, text_buffer)
                        elif iter_start.get_char() == cons.CHAR_MINUS:
                            # "-> " becoming "→ "
                            dad.special_char_replace(cons.CHARS_LISTBUL[4], iter_start, iter_insert, text_buffer)
                        elif iter_start.get_char() == cons.CHAR_EQUAL:
                            # "=> " becoming "⇒ "
                            dad.special_char_replace(cons.CHARS_LISTBUL[5], iter_start, iter_insert, text_buffer)
                    elif iter_start.get_char() == cons.CHAR_MINUS and iter_start.backward_char():
                        if iter_start.get_char() == cons.CHAR_LESSER:
                            # "<-> " becoming "↔ "
                            dad.special_char_replace(cons.SPECIAL_CHAR_ARROW_DOUBLE, iter_start, iter_insert, text_buffer)
                        elif iter_start.get_char() == cons.CHAR_MINUS:
                            # "--> " becoming "→ "
                            dad.special_char_replace(cons.SPECIAL_CHAR_ARROW_RIGHT, iter_start, iter_insert, text_buffer)
                    elif iter_start.get_char() == cons.CHAR_EQUAL and iter_start.backward_char():
                        if iter_start.get_char() == cons.CHAR_LESSER:
                            # "<=> " becoming "⇔ "
                            dad.special_char_replace(cons.SPECIAL_CHAR_ARROW_DOUBLE2, iter_start, iter_insert, text_buffer)
                        elif iter_start.get_char() == cons.CHAR_EQUAL:
                            # "==> " becoming "⇒ "
                            dad.special_char_replace(cons.SPECIAL_CHAR_ARROW_RIGHT2, iter_start, iter_insert, text_buffer)
                elif iter_start.get_char() == cons.CHAR_MINUS and iter_start.backward_char()\
                and iter_start.get_char() == cons.CHAR_MINUS and iter_start.backward_char()\
                and iter_start.get_char() == cons.CHAR_LESSER:
                    # "<-- " becoming "← "
                    dad.special_char_replace(cons.SPECIAL_CHAR_ARROW_LEFT, iter_start, iter_insert, text_buffer)
                elif iter_start.get_char() == cons.CHAR_EQUAL and iter_start.backward_char()\
                and iter_start.get_char() == cons.CHAR_EQUAL and iter_start.backward_char()\
                and iter_start.get_char() == cons.CHAR_LESSER:
                    # "<== " becoming "⇐ "
                    dad.special_char_replace(cons.SPECIAL_CHAR_ARROW_LEFT2, iter_start, iter_insert, text_buffer)
                elif iter_start.get_char() == cons.CHAR_PARENTH_CLOSE and iter_start.backward_char():
                    if iter_start.get_char().lower() == "c" and iter_start.backward_char()\
                    and iter_start.get_char() == cons.CHAR_PARENTH_OPEN:
                        # "(c) " becoming "© "
                        dad.special_char_replace(cons.SPECIAL_CHAR_COPYRIGHT, iter_start, iter_insert, text_buffer)
                    elif iter_start.get_char().lower() == "r" and iter_start.backward_char()\
                    and iter_start.get_char() == cons.CHAR_PARENTH_OPEN:
                        # "(r) " becoming "® "
                        dad.special_char_replace(cons.SPECIAL_CHAR_REGISTERED_TRADEMARK, iter_start, iter_insert, text_buffer)
                    elif iter_start.get_char().lower() == "m" and iter_start.backward_char()\
                    and iter_start.get_char() == "t" and iter_start.backward_char()\
                    and iter_start.get_char() == cons.CHAR_PARENTH_OPEN:
                        # "(tm) " becoming "™ "
                        dad.special_char_replace(cons.SPECIAL_CHAR_UNREGISTERED_TRADEMARK, iter_start, iter_insert, text_buffer)
                elif iter_start.get_char() == cons.CHAR_STAR and iter_start.get_line_offset() == 0:
                    # "* " becoming "• " at line start
                    dad.special_char_replace(cons.CHARS_LISTBUL[0], iter_start, iter_insert, text_buffer)
                elif iter_start.get_char() == cons.CHAR_SQ_BR_CLOSE and iter_start.backward_char():
                    if iter_start.get_line_offset() == 0 and iter_start.get_char() == cons.CHAR_SQ_BR_OPEN:
                        # "[] " becoming "☐ " at line start
                        dad.special_char_replace(cons.CHAR_LISTTODO, iter_start, iter_insert, text_buffer)
                elif iter_start.get_char() == cons.CHAR_COLON and iter_start.backward_char():
                    if iter_start.get_line_offset() == 0 and iter_start.get_char() == cons.CHAR_COLON:
                        # ":: " becoming "▪ " at line start
                        dad.special_char_replace(cons.CHARS_LISTBUL[2], iter_start, iter_insert, text_buffer)
    return False

def sourceview_cursor_and_tooltips_handler(dad, text_view, x, y):
    """Looks at all tags covering the position (x, y) in the text view,
       and if one of them is a link, change the cursor to the HAND2 cursor"""
    hovering_link_iter_offset = -1
    text_iter = text_view.get_iter_at_location(x, y)
    if dad.lists_handler.is_list_todo_beginning(text_iter):
        text_view.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(gtk.gdk.Cursor(gtk.gdk.X_CURSOR))
        text_view.set_tooltip_text(None)
        return
    tags = text_iter.get_tags()
    if not tags: tags = []
    for tag in tags:
        tag_name = tag.get_property("name")
        if tag_name and tag_name[0:4] == cons.TAG_LINK:
            hovering_link_iter_offset = text_iter.get_offset()
            tooltip = dad.sourceview_hovering_link_get_tooltip(tag_name[5:])
            break
    else:
        iter_anchor = text_iter.copy()
        for i in [0, 1]:
            if i == 1: iter_anchor.backward_char()
            anchor = iter_anchor.get_child_anchor()
            if anchor and "pixbuf" in dir(anchor):
                pixbuf_attrs = dir(anchor.pixbuf)
                if "link" in pixbuf_attrs and anchor.pixbuf.link:
                    hovering_link_iter_offset = text_iter.get_offset()
                    tooltip = dad.sourceview_hovering_link_get_tooltip(anchor.pixbuf.link)
                    break
    if dad.hovering_link_iter_offset != hovering_link_iter_offset:
        dad.hovering_link_iter_offset = hovering_link_iter_offset
        #print "link", dad.hovering_link_iter_offset
    if dad.hovering_link_iter_offset >= 0:
        text_view.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
        text_view.set_tooltip_text(tooltip)
    else:
        text_view.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(gtk.gdk.Cursor(gtk.gdk.XTERM))
        text_view.set_tooltip_text(None)

def rich_text_node_modify_codeboxes_font(start_iter, code_font):
    """Modify Font to CodeBoxes"""
    curr_iter = start_iter.copy()
    while 1:
        anchor = curr_iter.get_child_anchor()
        if anchor and "sourcebuffer" in dir(anchor):
            anchor.sourceview.modify_font(pango.FontDescription(code_font))
        if not curr_iter.forward_char(): break

def rich_text_node_modify_codeboxes_color(start_iter, dad):
    """Modify Color to CodeBoxes"""
    curr_iter = start_iter.copy()
    while 1:
        anchor = curr_iter.get_child_anchor()
        if anchor and "sourcebuffer" in dir(anchor):
            dad.widget_set_colors(anchor.sourceview, dad.rt_def_fg, dad.rt_def_bg, True)
        if not curr_iter.forward_char(): break

def text_file_rm_emptylines(filepath):
    """Remove empty lines in a text file"""
    overwrite_needed = False
    fd = open(filepath, 'r')
    file_lines = []
    for file_line in fd:
        if file_line not in ["\r\n", "\n\r", cons.CHAR_NEWLINE]:
            file_lines.append(file_line)
        else: overwrite_needed = True
    fd.close()
    if overwrite_needed:
        print filepath, "empty lines removed"
        fd = open(filepath, 'w')
        fd.writelines(file_lines)
        fd.close()

def get_proper_platform_filepath(filepath_in, is_file):
    """From Slash to Backslash when needed"""
    filepath_out = filepath_in
    if cons.IS_WIN_OS:
        if cons.CHAR_SLASH in filepath_in:
            filepath_out = filepath_in.replace(cons.CHAR_SLASH, cons.CHAR_BSLASH)
    else:
        if cons.CHAR_BSLASH in filepath_in:
            filepath_out = filepath_in.replace(cons.CHAR_BSLASH, cons.CHAR_SLASH)
    return filepath_out

def clean_from_chars_not_for_filename(filename_in):
    """Clean a string from chars not good for filename"""
    filename_out = filename_in.replace(cons.CHAR_SLASH, cons.CHAR_MINUS).replace(cons.CHAR_BSLASH, cons.CHAR_MINUS)
    filename_out = filename_out.replace(cons.CHAR_STAR, "").replace(cons.CHAR_QUESTION, "").replace(cons.CHAR_COLON, "")
    filename_out = filename_out.replace(cons.CHAR_LESSER, "").replace(cons.CHAR_GREATER, "")
    filename_out = filename_out.replace(cons.CHAR_PIPE, "").replace(cons.CHAR_DQUOTE, "")
    filename_out = filename_out.replace(cons.CHAR_NEWLINE, "").replace(cons.CHAR_CR, "").strip()
    return filename_out.replace(cons.CHAR_SPACE, cons.CHAR_USCORE)

def get_node_hierarchical_name(dad, tree_iter, separator="--", for_filename=True, root_to_leaf=True):
    """Get the Node Hierarchical Name"""
    hierarchical_name = dad.treestore[tree_iter][1].strip()
    father_iter = dad.treestore.iter_parent(tree_iter)
    while father_iter:
        if root_to_leaf:
            hierarchical_name = dad.treestore[father_iter][1].strip() + separator + hierarchical_name
        else:
            hierarchical_name = hierarchical_name + separator + dad.treestore[father_iter][1].strip()
        father_iter = dad.treestore.iter_parent(father_iter)
    if for_filename:
        hierarchical_name = clean_from_chars_not_for_filename(hierarchical_name)
        if len(hierarchical_name) > cons.MAX_FILE_NAME_LEN:
            hierarchical_name = hierarchical_name[-cons.MAX_FILE_NAME_LEN:]
    return hierarchical_name

def strip_trailing_spaces(text_buffer):
    """Remove trailing spaces/tabs"""
    cleaned_lines = 0
    removed_something = True
    while removed_something:
        removed_something = False
        curr_iter = text_buffer.get_start_iter()
        curr_state = 0
        start_offset = 0
        while curr_iter:
            curr_char = curr_iter.get_char()
            if curr_state == 0:
                if curr_char in [cons.CHAR_SPACE, cons.CHAR_TAB]:
                    start_offset = curr_iter.get_offset()
                    curr_state = 1
            elif curr_state == 1:
                if curr_char == cons.CHAR_NEWLINE:
                    text_buffer.delete(text_buffer.get_iter_at_offset(start_offset), curr_iter)
                    removed_something = True
                    cleaned_lines += 1
                    break
                elif not curr_char in [cons.CHAR_SPACE, cons.CHAR_TAB]:
                    curr_state = 0
            if not curr_iter.forward_char():
                if curr_state == 1:
                    text_buffer.delete(text_buffer.get_iter_at_offset(start_offset), curr_iter)
                break
    return cleaned_lines

def get_next_chars_from_iter_are(iter_start, chars_list):
    """Returns True if one set of the Given Chars are the first after iter"""
    for chars in chars_list:
        text_iter = iter_start.copy()
        num = len(chars)
        for i in range(num):
            if text_iter.get_char().encode(cons.STR_UTF8) != chars[i]:
                break
            if i != num-1 and not text_iter.forward_char():
                break
        else:
            return True
    return False

def get_first_chars_of_string_are(in_string, chars_list):
    """Returns True if one set of the Given Chars are the first of in_string"""
    for chars in chars_list:
        if in_string.startswith(chars):
            return True
    return False

def get_first_chars_of_string_at_offset_are(in_string, offset, chars_list):
    """Returns True if one set of the Given Chars are the first of in_string"""
    for chars in chars_list:
        num = len(chars)
        for i in range(num):
            if in_string[offset+i] != chars[i]:
                break
        else: return True
    return False

def get_former_line_indentation(iter_start):
    """Returns the indentation of the former paragraph or empty string"""
    if not iter_start.backward_chars(2) or iter_start.get_char() == cons.CHAR_NEWLINE: return ""
    buffer_start = False
    while iter_start:
        if iter_start.get_char() == cons.CHAR_NEWLINE: break # we got the previous paragraph start
        elif not iter_start.backward_char():
            buffer_start = True
            break # we reached the buffer start
    if not buffer_start: iter_start.forward_char()
    if iter_start.get_char() == cons.CHAR_SPACE:
        num_spaces = 1
        while iter_start.forward_char() and iter_start.get_char() == cons.CHAR_SPACE:
            num_spaces += 1
        return num_spaces*cons.CHAR_SPACE
    if iter_start.get_char() == cons.CHAR_TAB:
        num_tabs = 1
        while iter_start.forward_char() and iter_start.get_char() == cons.CHAR_TAB:
            num_tabs += 1
        return num_tabs*cons.CHAR_TAB
    return ""

def windows_cmd_prepare_path(filepath):
    """Prepares a Path to be digested by windows command line"""
    return cons.CHAR_DQUOTE + filepath + cons.CHAR_DQUOTE

def dialog_file_save_as(filename=None, filter_pattern=None, filter_name=None, curr_folder=None, parent=None):
    """The Save file as dialog, Returns the retrieved filepath or None"""
    chooser = gtk.FileChooserDialog(title=_("Save File as"),
                                    action=gtk.FILE_CHOOSER_ACTION_SAVE,
                                    buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL, gtk.STOCK_SAVE, gtk.RESPONSE_ACCEPT) )
    chooser.set_do_overwrite_confirmation(True)
    if parent != None:
        chooser.set_transient_for(parent)
        chooser.set_property("modal", True)
        chooser.set_property("destroy-with-parent", True)
        chooser.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    else: chooser.set_position(gtk.WIN_POS_CENTER)
    if curr_folder == None or os.path.isdir(curr_folder) == False:
        chooser.set_current_folder(os.path.expanduser('~'))
    else:
        chooser.set_current_folder(curr_folder)
    if filename != None:
        chooser.set_current_name(filename)
    if filter_pattern != None:
        filter = gtk.FileFilter()
        filter.set_name(filter_name)
        filter.add_pattern(filter_pattern)
        chooser.add_filter(filter)
    if chooser.run() == gtk.RESPONSE_ACCEPT:
        filepath = chooser.get_filename()
        chooser.destroy()
        return unicode(filepath, cons.STR_UTF8, cons.STR_IGNORE) if filepath != None else None
    else:
        chooser.destroy()
        return None

def dialog_file_select(filter_pattern=[], filter_mime=[], filter_name=None, curr_folder=None, parent=None):
    """The Select file dialog, Returns the retrieved filepath or None"""
    chooser = gtk.FileChooserDialog(title = _("Select File"),
                                    action=gtk.FILE_CHOOSER_ACTION_OPEN,
                                    buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL, gtk.STOCK_OPEN, gtk.RESPONSE_ACCEPT) )
    if parent != None:
        chooser.set_transient_for(parent)
        chooser.set_property("modal", True)
        chooser.set_property("destroy-with-parent", True)
        chooser.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    else: chooser.set_position(gtk.WIN_POS_CENTER)
    if curr_folder == None or os.path.isdir(curr_folder) == False:
        chooser.set_current_folder(os.path.expanduser('~'))
    else:
        chooser.set_current_folder(curr_folder)
    if filter_pattern or filter_mime:
        filefilter = gtk.FileFilter()
        filefilter.set_name(filter_name)
        for element in filter_pattern:
            filefilter.add_pattern(element)
        for element in filter_mime:
            filefilter.add_mime_type(element)
        chooser.add_filter(filefilter)
    if chooser.run() == gtk.RESPONSE_ACCEPT:
        filepath = chooser.get_filename()
        chooser.destroy()
        return unicode(filepath, cons.STR_UTF8, cons.STR_IGNORE) if filepath != None else None
    else:
        chooser.destroy()
        return None

def dialog_folder_select(curr_folder=None, parent=None):
    """The Select folder dialog, returns the retrieved folderpath or None"""
    chooser = gtk.FileChooserDialog(title = _("Select Folder"),
                                    action=gtk.FILE_CHOOSER_ACTION_SELECT_FOLDER,
                                    buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL, gtk.STOCK_OPEN, gtk.RESPONSE_ACCEPT) )
    if parent != None:
        chooser.set_transient_for(parent)
        chooser.set_property("modal", True)
        chooser.set_property("destroy-with-parent", True)
        chooser.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    else: chooser.set_position(gtk.WIN_POS_CENTER)
    if curr_folder == None or os.path.isdir(curr_folder) == False:
        chooser.set_current_folder(os.path.expanduser('~'))
    else:
        chooser.set_current_folder(curr_folder)
    if chooser.run() == gtk.RESPONSE_ACCEPT:
        folderpath = chooser.get_filename()
        chooser.destroy()
        return unicode(folderpath, cons.STR_UTF8, cons.STR_IGNORE) if folderpath != None else None
    else:
        chooser.destroy()
        return None

def dialog_question(message, parent=None):
    """The Question dialog, returns True if the user presses OK"""
    dialog = gtk.MessageDialog(parent=parent,
                               flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
                               type=gtk.MESSAGE_QUESTION,
                               message_format=message)
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_title(_("Question"))
    dialog.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT)
    dialog.add_button(gtk.STOCK_OK, gtk.RESPONSE_ACCEPT)
    response = dialog.run()
    dialog.hide()
    return True if response == gtk.RESPONSE_ACCEPT else False

def dialog_info(message, parent):
    """The Info dialog"""
    dialog = gtk.MessageDialog(parent=parent,
                               flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
                               type=gtk.MESSAGE_INFO,
                               buttons=gtk.BUTTONS_OK,
                               message_format=message)
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_title(_("Info"))
    dialog.run()
    dialog.destroy()

def dialog_info_after_restart(parent=None):
    """Change Only After Restart"""
    dialog_info(_("This Change will have Effect Only After Restarting CherryTree"), parent)

def dialog_warning(message, parent):
    """The Warning dialog"""
    dialog = gtk.MessageDialog(parent=parent,
                               flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
                               type=gtk.MESSAGE_WARNING,
                               buttons=gtk.BUTTONS_OK,
                               message_format=message)
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_title(_("Warning"))
    dialog.run()
    dialog.destroy()

def dialog_error(message, parent):
    """The Error dialog"""
    dialog = gtk.MessageDialog(parent=parent,
                               flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
                               type=gtk.MESSAGE_ERROR,
                               buttons=gtk.BUTTONS_OK,
                               message_format=message)
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_title(_("Error"))
    dialog.run()
    dialog.destroy()

def dialog_about(dad):
    """Application About Dialog"""
    dialog = gtk.AboutDialog()
    dialog.set_program_name("CherryTree")
    dialog.set_version(cons.VERSION)
    dialog.set_copyright("""Copyright © 2009-2016
Giuseppe Penone <giuspen@gmail.com>""")
    dialog.set_comments(_("A Hierarchical Note Taking Application, featuring Rich Text and Syntax Highlighting"))
    dialog.set_license(_("""
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
  
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
  
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
"""))
    dialog.set_website("http://www.giuspen.com/cherrytree/")
    dialog.set_authors(["Giuseppe Penone <giuspen@gmail.com>"])
    dialog.set_documenters(["Robert Boudreau <RobtTheB@gmail.com>"])
    dialog.set_artists(["OCAL <http://www.openclipart.org/>", "Zeltak <zeltak@gmail.com>", "Angelo Penone <angelo.penone@gmail.com>"])
    dialog.set_translator_credits(_("Armenian")+" (hy) Seda Stamboltsyan <sedastam@yandex.com>"+cons.CHAR_NEWLINE+
_("Chinese Simplified")+" (zh_CN) Channing Wong <channing.wong@qq.com>"+cons.CHAR_NEWLINE+
_("Czech")+" (cs) Pavel Fric <fripohled@blogspot.com>"+cons.CHAR_NEWLINE+
_("Dutch")+" (nl) Patrick Vijgeboom <pj.vijgeboom@gmail.com>"+cons.CHAR_NEWLINE+
_("French")+" (fr) Klaus Becker <colonius@free.fr>"+cons.CHAR_NEWLINE+
_("German")+" (de) Frank Brungräber <calexu@arcor.de>"+cons.CHAR_NEWLINE+
_("Italian")+" (it) Vincenzo Reale <smart2128@baslug.org>"+cons.CHAR_NEWLINE+
_("Japanese")+" (ja) Piyo <py2@live.jp>"+cons.CHAR_NEWLINE+
_("Lithuanian")+" (lt) Zygis <zygimantus@gmail.com>"+cons.CHAR_NEWLINE+
_("Polish")+" (pl) Marcin Swierczynski <orneo1212@gmail.com>"+cons.CHAR_NEWLINE+
_("Portuguese Brazil")+" (pt_BR) Vinicius Schmidt <viniciussm@rocketmail.com>"+cons.CHAR_NEWLINE+
_("Russian")+" (ru) Andriy Kovtun <kovtunos@yandex.ru>"+cons.CHAR_NEWLINE+
_("Spanish")+" (es) Daniel MC <i.e.betel@gmail.com>"+cons.CHAR_NEWLINE+
_("Turkish")+" (tr) Ferhat Aydin <ferhataydin44@gmail.com>"+cons.CHAR_NEWLINE+
_("Ukrainian")+" (uk) Andriy Kovtun <kovtunos@yandex.ru>")
    dialog.set_logo(gtk.gdk.pixbuf_new_from_file(os.path.join(cons.GLADE_PATH, "cherrytree.png")))
    dialog.set_title(_("About CherryTree"))
    dialog.set_transient_for(dad.window)
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_modal(True)
    def f_url_hook(dialog, link, user_data):
        webbrowser.open(link)
    gtk.about_dialog_set_url_hook(f_url_hook, None)
    dialog.run()
    dialog.hide()

def dialog_choose_element_in_list(father_win, title, elements_list, column_title, icon_n_label_list=None):
    """Choose Between Elements in List"""
    class ListParms:
        def __init__(self):
            self.sel_iter = None
    list_parms = ListParms()
    dialog = gtk.Dialog(title=title,
        parent=father_win,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
                 gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(400, 300)
    scrolledwindow = gtk.ScrolledWindow()
    scrolledwindow.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
    if not icon_n_label_list: elements_liststore = gtk.ListStore(str)
    else: elements_liststore = gtk.ListStore(str,str,str)
    elements_treeview = gtk.TreeView(elements_liststore)
    elements_renderer_text = gtk.CellRendererText()
    if not icon_n_label_list:
        elements_column = gtk.TreeViewColumn(column_title, elements_renderer_text, text=0)
    else:
        elements_treeview.set_headers_visible(False)
        renderer_pixbuf = gtk.CellRendererPixbuf()
        renderer_text = gtk.CellRendererText()
        elements_column = gtk.TreeViewColumn()
        elements_column.pack_start(renderer_pixbuf, False)
        elements_column.pack_start(renderer_text, True)
        elements_column.set_attributes(renderer_pixbuf, stock_id=1)
        elements_column.set_attributes(renderer_text, text=2)
    elements_treeview.append_column(elements_column)
    elements_treeviewselection = elements_treeview.get_selection()
    if not icon_n_label_list:
        for element_name in elements_list:
            elements_liststore.append(element_name)
    else:
        for element in icon_n_label_list:
            elements_liststore.append([element[0], element[1], element[2]])
    scrolledwindow.add(elements_treeview)
    list_parms.sel_iter = elements_liststore.get_iter_first()
    if list_parms.sel_iter:
        elements_treeview.set_cursor(elements_liststore.get_path(list_parms.sel_iter))
    content_area = dialog.get_content_area()
    content_area.pack_start(scrolledwindow)
    def on_mouse_button_clicked_elements_list(widget, event):
        if event.button != 1: return
        if event.type == gtk.gdk._2BUTTON_PRESS:
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
    def on_treeview_event_after(treeview, event):
        if event.type not in [gtk.gdk.BUTTON_PRESS, gtk.gdk.KEY_PRESS]: return
        model, list_parms.sel_iter = elements_treeviewselection.get_selected()
    def on_key_press_elementslistdialog(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    elements_treeview.connect('event-after', on_treeview_event_after)
    dialog.connect('key_press_event', on_key_press_elementslistdialog)
    elements_treeview.connect('button-press-event', on_mouse_button_clicked_elements_list)
    content_area.show_all()
    elements_treeview.grab_focus()
    response = dialog.run()
    dialog.hide()
    if response != gtk.RESPONSE_ACCEPT or not list_parms.sel_iter: return ""
    return unicode(elements_liststore[list_parms.sel_iter][0], cons.STR_UTF8, cons.STR_IGNORE)

def dialog_img_n_entry(father_win, title, entry_content, img_stock):
    """Insert/Edit Anchor Name"""
    dialog = gtk.Dialog(title=title,
        parent=father_win,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
                 gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(300, -1)
    image = gtk.Image()
    image.set_from_stock(img_stock, gtk.ICON_SIZE_BUTTON)
    entry = gtk.Entry()
    entry.set_text(entry_content)
    hbox = gtk.HBox()
    hbox.pack_start(image, expand=False)
    hbox.pack_start(entry)
    hbox.set_spacing(5)
    content_area = dialog.get_content_area()
    content_area.pack_start(hbox)
    def on_key_press_anchoreditdialog(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    dialog.connect('key_press_event', on_key_press_anchoreditdialog)
    content_area.show_all()
    entry.grab_focus()
    response = dialog.run()
    dialog.hide()
    return unicode(entry.get_text(), cons.STR_UTF8, cons.STR_IGNORE).strip() if response == gtk.RESPONSE_ACCEPT else ""

def dialog_image_handle(father_win, title, original_pixbuf):
    """Insert/Edit Image"""
    class ImgParms:
        def __init__(self, original_pixbuf):
            self.original_pixbuf = original_pixbuf
            self.width = original_pixbuf.get_width()
            self.height = original_pixbuf.get_height()
            self.image_w_h_ration = float(self.width)/self.height
    img_parms = ImgParms(original_pixbuf)
    dialog = gtk.Dialog(title=title,
        parent=father_win,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
                 gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(600, 500)
    button_rotate_90_ccw = gtk.Button()
    button_rotate_90_ccw.set_image(gtk.image_new_from_stock("object-rotate-left", gtk.ICON_SIZE_DND))
    button_rotate_90_cw = gtk.Button()
    button_rotate_90_cw.set_image(gtk.image_new_from_stock("object-rotate-right", gtk.ICON_SIZE_DND))
    scrolledwindow = gtk.ScrolledWindow()
    scrolledwindow.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
    viewport = gtk.Viewport()
    image = gtk.image_new_from_pixbuf(original_pixbuf)
    scrolledwindow.add(viewport)
    viewport.add(image)
    hbox_1 = gtk.HBox()
    hbox_1.pack_start(button_rotate_90_ccw, expand=False)
    hbox_1.pack_start(scrolledwindow)
    hbox_1.pack_start(button_rotate_90_cw, expand=False)
    hbox_1.set_spacing(2)
    label_width = gtk.Label(_("Width"))
    adj_width = gtk.Adjustment(value=img_parms.width, lower=1, upper=10000, step_incr=1)
    spinbutton_width = gtk.SpinButton(adj_width)
    label_height = gtk.Label(_("Height"))
    adj_height = gtk.Adjustment(value=img_parms.height, lower=1, upper=10000, step_incr=1)
    spinbutton_height = gtk.SpinButton(adj_height)
    hbox_2 = gtk.HBox()
    hbox_2.pack_start(label_width)
    hbox_2.pack_start(spinbutton_width)
    hbox_2.pack_start(label_height)
    hbox_2.pack_start(spinbutton_height)
    content_area = dialog.get_content_area()
    content_area.pack_start(hbox_1)
    content_area.pack_start(hbox_2, expand=False)
    content_area.set_spacing(6)
    def image_load_into_dialog():
        spinbutton_width.set_value(img_parms.width)
        spinbutton_height.set_value(img_parms.height)
        if img_parms.width <= 900 and img_parms.height <= 600:
            # original size into the dialog
            pixbuf = img_parms.original_pixbuf.scale_simple(int(img_parms.width), int(img_parms.height), gtk.gdk.INTERP_BILINEAR)
        else:
            # reduced size visible into the dialog
            if img_parms.width > 900:
                img_parms_width = 900
                img_parms_height = img_parms_width / img_parms.image_w_h_ration
            else:
                img_parms_height = 600
                img_parms_width = img_parms_height * img_parms.image_w_h_ration
            pixbuf = img_parms.original_pixbuf.scale_simple(int(img_parms_width), int(img_parms_height), gtk.gdk.INTERP_BILINEAR)
        image.set_from_pixbuf(pixbuf)
    def on_button_rotate_90_cw_clicked(*args):
        img_parms.original_pixbuf = img_parms.original_pixbuf.rotate_simple(270)
        img_parms.image_w_h_ration = 1/img_parms.image_w_h_ration
        new_width = img_parms.height # new width is the former height and vice versa
        img_parms.height = img_parms.width
        img_parms.width = new_width
        image_load_into_dialog()
    def on_button_rotate_90_ccw_clicked(*args):
        img_parms.original_pixbuf = img_parms.original_pixbuf.rotate_simple(90)
        img_parms.image_w_h_ration = 1/img_parms.image_w_h_ration
        new_width = img_parms.height # new width is the former height and vice versa
        img_parms.height = img_parms.width
        img_parms.width = new_width
        image_load_into_dialog()
    def on_spinbutton_image_width_value_changed(spinbutton):
        img_parms.width = spinbutton_width.get_value()
        img_parms.height = img_parms.width/img_parms.image_w_h_ration
        image_load_into_dialog()
    def on_spinbutton_image_height_value_changed(spinbutton):
        img_parms.height = spinbutton_height.get_value()
        img_parms.width = img_parms.height*img_parms.image_w_h_ration
        image_load_into_dialog()
    def on_key_press_imagehandledialog(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_RETURN:
            spinbutton_width.update()
            spinbutton_height.update()
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    button_rotate_90_ccw.connect('clicked', on_button_rotate_90_ccw_clicked)
    button_rotate_90_cw.connect('clicked', on_button_rotate_90_cw_clicked)
    spinbutton_width.connect('value-changed', on_spinbutton_image_width_value_changed)
    spinbutton_height.connect('value-changed', on_spinbutton_image_height_value_changed)
    dialog.connect('key_press_event', on_key_press_imagehandledialog)
    image_load_into_dialog()
    content_area.show_all()
    try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).grab_focus()
    except: pass
    response = dialog.run()
    dialog.hide()
    if response != gtk.RESPONSE_ACCEPT: return None
    return img_parms.original_pixbuf.scale_simple(int(img_parms.width), int(img_parms.height), gtk.gdk.INTERP_BILINEAR)

def dialog_node_delete(father_win, warning_label):
    """Confirmation before Node Remove"""
    dialog = gtk.Dialog(title=_("Warning"),
        parent=father_win,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
                 gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(350, 150)
    image = gtk.Image()
    image.set_from_stock(gtk.STOCK_DIALOG_WARNING, gtk.ICON_SIZE_DIALOG)
    label = gtk.Label(warning_label)
    label.set_use_markup(True)
    hbox = gtk.HBox()
    hbox.pack_start(image)
    hbox.pack_start(label)
    hbox.set_spacing(5)
    content_area = dialog.get_content_area()
    content_area.pack_start(hbox)
    def on_key_press_nodedeletedialog(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    dialog.connect('key_press_event', on_key_press_nodedeletedialog)
    content_area.show_all()
    try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).grab_focus()
    except: pass
    response = dialog.run()
    dialog.hide()
    return response

def dialog_exit_del_temp_files(dad):
    """Temporary Files will be deleted, close applications using them"""
    dialog = gtk.Dialog(title=_("Warning"),
        parent=dad.window,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(_("Cancel"), 2,
                 _("Yes"), 1) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(350, 150)
    try:
        button = dialog.get_widget_for_response(2)
        button.set_image(gtk.image_new_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON))
        button = dialog.get_widget_for_response(1)
        button.set_image(gtk.image_new_from_stock(gtk.STOCK_DIALOG_WARNING, gtk.ICON_SIZE_BUTTON))
        button.grab_focus()
    except: pass
    image = gtk.Image()
    image.set_from_stock(gtk.STOCK_DIALOG_WARNING, gtk.ICON_SIZE_DIALOG)
    label = gtk.Label("<b>"+_("Temporary Files were Created and Opened with External Applications.")+"</b>"+2*cons.CHAR_NEWLINE+"<b>"+_("Quit the External Applications Before Quit CherryTree.")+"</b>"+2*cons.CHAR_NEWLINE+"<b>"+_("Did you Quit the External Applications?")+"</b>")
    label.set_use_markup(True)
    hbox = gtk.HBox()
    hbox.pack_start(image)
    hbox.pack_start(label)
    hbox.set_spacing(5)
    content_area = dialog.get_content_area()
    content_area.pack_start(hbox)
    def on_key_press_exitdialog(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(1).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        elif keyname == "Escape":
            try: dialog.get_widget_for_response(2).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    dialog.connect('key_press_event', on_key_press_exitdialog)
    content_area.show_all()
    response = dialog.run()
    dialog.hide()
    return False if response != 1 else True

def dialog_exit_save(father_win):
    """Save before Exit Dialog"""
    dialog = gtk.Dialog(title=_("Warning"),
        parent=father_win,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(_("Cancel"), 6,
                 _("No"), 4,
                 _("Yes"), 2) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(350, 150)
    try:
        button = dialog.get_widget_for_response(6)
        button.set_image(gtk.image_new_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON))
        button = dialog.get_widget_for_response(4)
        button.set_image(gtk.image_new_from_stock(gtk.STOCK_CLEAR, gtk.ICON_SIZE_BUTTON))
        button = dialog.get_widget_for_response(2)
        button.set_image(gtk.image_new_from_stock(gtk.STOCK_SAVE, gtk.ICON_SIZE_BUTTON))
        button.grab_focus()
    except: pass
    image = gtk.Image()
    image.set_from_stock(gtk.STOCK_DIALOG_WARNING, gtk.ICON_SIZE_DIALOG)
    label = gtk.Label("<b>"+_("The Current Document was Updated.")+"</b>"+2*cons.CHAR_NEWLINE+"<b>"+_("Do you want to Save the Changes?")+"</b>")
    label.set_use_markup(True)
    hbox = gtk.HBox()
    hbox.pack_start(image)
    hbox.pack_start(label)
    hbox.set_spacing(5)
    content_area = dialog.get_content_area()
    content_area.pack_start(hbox)
    def on_key_press_exitdialog(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(2).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        elif keyname == "Escape":
            try: dialog.get_widget_for_response(6).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    dialog.connect('key_press_event', on_key_press_exitdialog)
    content_area.show_all()
    response = dialog.run()
    dialog.hide()
    return response

def dialog_link_handle(dad, title, sel_tree_iter):
    """Dialog to Insert/Edit Links"""
    class LinksParms:
        def __init__(self):
            self.sel_iter = sel_tree_iter if sel_tree_iter else dad.links_entries['node']
            self.first_in = True
    links_parms = LinksParms()
    dialog = gtk.Dialog(title=title,
        parent=dad.window,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
        gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(600, 500)

    hbox_webs = gtk.HBox()
    image_webs = gtk.Image()
    image_webs.set_from_stock("link_website", gtk.ICON_SIZE_BUTTON)
    radiobutton_webs = gtk.RadioButton(label=_("To WebSite"))
    entry_webs = gtk.Entry()
    entry_webs.set_text(dad.links_entries['webs'])
    hbox_webs.pack_start(image_webs, expand=False)
    hbox_webs.pack_start(radiobutton_webs, expand=False)
    hbox_webs.pack_start(entry_webs)
    hbox_webs.set_spacing(5)

    hbox_file = gtk.HBox()
    image_file = gtk.Image()
    image_file.set_from_stock(gtk.STOCK_FILE, gtk.ICON_SIZE_BUTTON)
    radiobutton_file = gtk.RadioButton(label=_("To File"))
    radiobutton_file.set_group(radiobutton_webs)
    entry_file = gtk.Entry()
    entry_file.set_text(dad.links_entries['file'])
    button_browse_file = gtk.Button()
    button_browse_file.set_image(gtk.image_new_from_stock("find", gtk.ICON_SIZE_BUTTON))
    hbox_file.pack_start(image_file, expand=False)
    hbox_file.pack_start(radiobutton_file, expand=False)
    hbox_file.pack_start(entry_file)
    hbox_file.pack_start(button_browse_file, expand=False)
    hbox_file.set_spacing(5)

    hbox_folder = gtk.HBox()
    image_folder = gtk.Image()
    image_folder.set_from_stock(gtk.STOCK_DIRECTORY, gtk.ICON_SIZE_BUTTON)
    radiobutton_folder = gtk.RadioButton(label=_("To Folder"))
    radiobutton_folder.set_group(radiobutton_webs)
    entry_folder = gtk.Entry()
    entry_folder.set_text(dad.links_entries['fold'])
    button_browse_folder = gtk.Button()
    button_browse_folder.set_image(gtk.image_new_from_stock("find", gtk.ICON_SIZE_BUTTON))
    hbox_folder.pack_start(image_folder, expand=False)
    hbox_folder.pack_start(radiobutton_folder, expand=False)
    hbox_folder.pack_start(entry_folder)
    hbox_folder.pack_start(button_browse_folder, expand=False)
    hbox_folder.set_spacing(5)

    hbox_node = gtk.HBox()
    image_node = gtk.Image()
    image_node.set_from_stock("cherrytree", gtk.ICON_SIZE_BUTTON)
    radiobutton_node = gtk.RadioButton(label=_("To Node"))
    radiobutton_node.set_group(radiobutton_webs)
    hbox_node.pack_start(image_node, expand=False)
    hbox_node.pack_start(radiobutton_node)
    hbox_node.set_spacing(5)

    hbox_detail = gtk.HBox()

    treeview_2 = gtk.TreeView(dad.treestore)
    treeview_2.set_headers_visible(False)
    treeview_2.set_search_column(1)
    renderer_pixbuf_2 = gtk.CellRendererPixbuf()
    renderer_text_2 = gtk.CellRendererText()
    column_2 = gtk.TreeViewColumn()
    column_2.pack_start(renderer_pixbuf_2, False)
    column_2.pack_start(renderer_text_2, True)
    column_2.set_attributes(renderer_pixbuf_2, stock_id=0)
    column_2.set_attributes(renderer_text_2, text=1)
    treeview_2.append_column(column_2)
    treeviewselection_2 = treeview_2.get_selection()
    scrolledwindow = gtk.ScrolledWindow()
    scrolledwindow.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
    scrolledwindow.add(treeview_2)

    vbox_anchor = gtk.VBox()
    label_over = gtk.Label()
    label_below = gtk.Label()

    hbox_anchor = gtk.HBox()
    entry_anchor = gtk.Entry()
    entry_anchor.set_text(dad.links_entries['anch'])
    button_browse_anchor = gtk.Button()
    button_browse_anchor.set_image(gtk.image_new_from_stock("anchor", gtk.ICON_SIZE_BUTTON))
    hbox_anchor.pack_start(entry_anchor)
    hbox_anchor.pack_start(button_browse_anchor, expand=False)

    frame_anchor = gtk.Frame(label="<b>"+_("Anchor Name (optional)")+"</b>")
    frame_anchor.get_label_widget().set_use_markup(True)
    frame_anchor.set_shadow_type(gtk.SHADOW_NONE)
    frame_anchor.add(hbox_anchor)

    vbox_anchor.pack_start(label_over)
    vbox_anchor.pack_start(frame_anchor, expand=False)
    vbox_anchor.pack_start(label_below)

    hbox_detail.pack_start(scrolledwindow)
    hbox_detail.pack_start(vbox_anchor, expand=False)

    content_area = dialog.get_content_area()
    content_area.pack_start(hbox_webs, expand=False)
    content_area.pack_start(hbox_file, expand=False)
    content_area.pack_start(hbox_folder, expand=False)
    content_area.pack_start(hbox_node, expand=False)
    content_area.pack_start(hbox_detail)
    content_area.set_spacing(5)

    radiobutton_webs.set_active(dad.link_type == cons.LINK_TYPE_WEBS)
    radiobutton_node.set_active(dad.link_type == cons.LINK_TYPE_NODE)
    radiobutton_file.set_active(dad.link_type == cons.LINK_TYPE_FILE)
    radiobutton_folder.set_active(dad.link_type == cons.LINK_TYPE_FOLD)

    def link_type_changed_on_dialog():
        entry_webs.set_sensitive(dad.link_type == cons.LINK_TYPE_WEBS)
        hbox_detail.set_sensitive(dad.link_type == cons.LINK_TYPE_NODE)
        entry_file.set_sensitive(dad.link_type == cons.LINK_TYPE_FILE)
        entry_folder.set_sensitive(dad.link_type == cons.LINK_TYPE_FOLD)
        if dad.link_type == cons.LINK_TYPE_WEBS: entry_webs.grab_focus()
        elif dad.link_type == cons.LINK_TYPE_NODE:
            treeview_2.grab_focus()
            if links_parms.first_in:
                links_parms.first_in = False
                config.get_tree_expanded_collapsed_string(dad)
                config.set_tree_expanded_collapsed_string(dad, treeview=treeview_2)
            if not links_parms.sel_iter: links_parms.sel_iter = dad.treestore.get_iter_first()
            sel_path = dad.treestore.get_path(links_parms.sel_iter)
            treeview_2.expand_to_path(sel_path)
            treeview_2.set_cursor(sel_path)
            treeview_2.scroll_to_cell(sel_path)
        elif dad.link_type == cons.LINK_TYPE_FILE: entry_file.grab_focus()
        else: entry_folder.grab_focus()
    def on_radiobutton_link_website_toggled(radiobutton):
        if radiobutton.get_active(): dad.link_type = cons.LINK_TYPE_WEBS
        link_type_changed_on_dialog()
    def on_radiobutton_link_node_anchor_toggled(radiobutton):
        if radiobutton.get_active(): dad.link_type = cons.LINK_TYPE_NODE
        link_type_changed_on_dialog()
    def on_radiobutton_link_file_toggled(radiobutton):
        if radiobutton.get_active(): dad.link_type = cons.LINK_TYPE_FILE
        link_type_changed_on_dialog()
    def on_radiobutton_link_folder_toggled(radiobutton):
        if radiobutton.get_active(): dad.link_type = cons.LINK_TYPE_FOLD
        link_type_changed_on_dialog()
    def on_button_browse_for_file_to_link_to_clicked(self, *args):
        filepath = dialog_file_select(curr_folder=dad.pick_dir, parent=dialog)
        if not filepath: return
        dad.pick_dir = os.path.dirname(filepath)
        if dad.links_relative:
            try: filepath = os.path.relpath(filepath, dad.file_dir)
            except: print "cannot set relative path for different drives"
        entry_file.set_text(filepath)
    def on_button_browse_for_folder_to_link_to_clicked(self, *args):
        filepath = dialog_folder_select(curr_folder=dad.pick_dir, parent=dialog)
        if not filepath: return
        dad.pick_dir = filepath
        if dad.links_relative:
            try: filepath = os.path.relpath(filepath, dad.file_dir)
            except: print "cannot set relative path for different drives"
        entry_folder.set_text(filepath)
    def on_browse_anchors_button_clicked(*args):
        if not links_parms.sel_iter:
            dialog_warning(_("No Node is Selected"), dialog)
            return
        anchors_list = []
        text_buffer = dad.get_textbuffer_from_tree_iter(links_parms.sel_iter)
        curr_iter = text_buffer.get_start_iter()
        while 1:
            anchor = curr_iter.get_child_anchor()
            if anchor != None:
                if "pixbuf" in dir(anchor) and "anchor" in dir(anchor.pixbuf):
                    anchors_list.append([anchor.pixbuf.anchor])
            if not curr_iter.forward_char(): break
        dad.objects_buffer_refresh()
        if not anchors_list:
            dialog_info(_("There are No Anchors in the Selected Node"), dialog)
            return
        ret_anchor_name = dialog_choose_element_in_list(dialog, _("Choose Existing Anchor"), anchors_list, _("Anchor Name"))
        if ret_anchor_name: entry_anchor.set_text(ret_anchor_name)
    def on_treeview_event_after(treeview, event):
        if event.type not in [gtk.gdk.BUTTON_PRESS, gtk.gdk._2BUTTON_PRESS, gtk.gdk.KEY_PRESS]: return
        model, links_parms.sel_iter = treeviewselection_2.get_selected()
        if event.type == gtk.gdk.BUTTON_PRESS:
            if event.button == 2:
                path_at_click = treeview.get_path_at_pos(int(event.x), int(event.y))
                if path_at_click:
                    if treeview.row_expanded(path_at_click[0]):
                        treeview.collapse_row(path_at_click[0])
                    else: treeview.expand_row(path_at_click[0], False)
        elif event.type == gtk.gdk._2BUTTON_PRESS and event.button == 1:
            if links_parms.sel_iter:
                treestore = treeview.get_model()
                if treeview.row_expanded(treestore.get_path(links_parms.sel_iter)):
                    treeview.collapse_row(treestore.get_path(links_parms.sel_iter))
                else:
                    treeview.expand_row(treestore.get_path(links_parms.sel_iter), open_all=False)
        elif event.type == gtk.gdk.KEY_PRESS:
            if links_parms.sel_iter:
                treestore = treeview.get_model()
                keyname = gtk.gdk.keyval_name(event.keyval)
                if keyname == cons.STR_KEY_LEFT:
                    treeview.collapse_row(treestore.get_path(links_parms.sel_iter))
                elif keyname == cons.STR_KEY_RIGHT:
                    treeview.expand_row(treestore.get_path(links_parms.sel_iter), open_all=False)
    def on_key_press_links_handle_dialog(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        elif keyname == cons.STR_KEY_TAB:
            if dad.link_type == cons.LINK_TYPE_WEBS: radiobutton_file.set_active(True)
            elif dad.link_type == cons.LINK_TYPE_FILE: radiobutton_folder.set_active(True)
            elif dad.link_type == cons.LINK_TYPE_FOLD: radiobutton_node.set_active(True)
            else: radiobutton_webs.set_active(True)
            return True
        return False
    radiobutton_webs.connect("toggled", on_radiobutton_link_website_toggled)
    radiobutton_node.connect("toggled", on_radiobutton_link_node_anchor_toggled)
    radiobutton_file.connect("toggled", on_radiobutton_link_file_toggled)
    radiobutton_folder.connect("toggled", on_radiobutton_link_folder_toggled)
    button_browse_file.connect('clicked', on_button_browse_for_file_to_link_to_clicked)
    button_browse_folder.connect('clicked', on_button_browse_for_folder_to_link_to_clicked)
    button_browse_anchor.connect('clicked', on_browse_anchors_button_clicked)
    treeview_2.connect('event-after', on_treeview_event_after)
    dialog.connect("key_press_event", on_key_press_links_handle_dialog)

    content_area.show_all()
    link_type_changed_on_dialog()
    response = dialog.run()
    dialog.hide()
    if response != gtk.RESPONSE_ACCEPT: return False
    dad.links_entries['webs'] = unicode(entry_webs.get_text(), cons.STR_UTF8, cons.STR_IGNORE).strip()
    dad.links_entries['file'] = unicode(entry_file.get_text(), cons.STR_UTF8, cons.STR_IGNORE).strip()
    dad.links_entries['fold'] = unicode(entry_folder.get_text(), cons.STR_UTF8, cons.STR_IGNORE).strip()
    dad.links_entries['anch'] = unicode(entry_anchor.get_text(), cons.STR_UTF8, cons.STR_IGNORE).strip()
    dad.links_entries['node'] = links_parms.sel_iter
    return True

def dialog_choose_node(dad, title, treestore, sel_tree_iter):
    """Dialog to Select a Node"""
    class NodeParms:
        def __init__(self):
            self.sel_iter = sel_tree_iter
    node_parms = NodeParms()
    dialog = gtk.Dialog(title=title,
        parent=dad.window,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
        gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    dialog.set_default_size(600, 500)
    treeview_2 = gtk.TreeView(treestore)
    treeview_2.set_headers_visible(False)
    treeview_2.set_search_column(1)
    renderer_pixbuf_2 = gtk.CellRendererPixbuf()
    renderer_text_2 = gtk.CellRendererText()
    column_2 = gtk.TreeViewColumn()
    column_2.pack_start(renderer_pixbuf_2, False)
    column_2.pack_start(renderer_text_2, True)
    column_2.set_attributes(renderer_pixbuf_2, stock_id=0)
    column_2.set_attributes(renderer_text_2, text=1)
    treeview_2.append_column(column_2)
    treeviewselection_2 = treeview_2.get_selection()
    scrolledwindow = gtk.ScrolledWindow()
    scrolledwindow.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
    scrolledwindow.add(treeview_2)
    content_area = dialog.get_content_area()
    content_area.pack_start(scrolledwindow)
    def on_key_press_choose_node_dialog(widget, event):
        if gtk.gdk.keyval_name(event.keyval) == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    def on_treeview_event_after(treeview, event):
        if event.type not in [gtk.gdk.BUTTON_PRESS, gtk.gdk._2BUTTON_PRESS, gtk.gdk.KEY_PRESS]: return
        model, node_parms.sel_iter = treeviewselection_2.get_selected()
        if event.type == gtk.gdk.BUTTON_PRESS:
            if event.button == 2:
                path_at_click = treeview.get_path_at_pos(int(event.x), int(event.y))
                if path_at_click:
                    if treeview.row_expanded(path_at_click[0]):
                        treeview.collapse_row(path_at_click[0])
                    else: treeview.expand_row(path_at_click[0], False)
        elif event.type == gtk.gdk._2BUTTON_PRESS and event.button == 1:
            if node_parms.sel_iter:
                treestore = treeview.get_model()
                if treeview.row_expanded(treestore.get_path(node_parms.sel_iter)):
                    treeview.collapse_row(treestore.get_path(node_parms.sel_iter))
                else:
                    treeview.expand_row(treestore.get_path(node_parms.sel_iter), open_all=False)
        elif event.type == gtk.gdk.KEY_PRESS:
            if node_parms.sel_iter:
                treestore = treeview.get_model()
                keyname = gtk.gdk.keyval_name(event.keyval)
                if keyname == cons.STR_KEY_LEFT:
                    treeview.collapse_row(treestore.get_path(node_parms.sel_iter))
                elif keyname == cons.STR_KEY_RIGHT:
                    treeview.expand_row(treestore.get_path(node_parms.sel_iter), open_all=False)
    dialog.connect("key_press_event", on_key_press_choose_node_dialog)
    treeview_2.connect('event-after', on_treeview_event_after)
    content_area.show_all()
    config.get_tree_expanded_collapsed_string(dad)
    config.set_tree_expanded_collapsed_string(dad, treeview=treeview_2)
    if node_parms.sel_iter:
        sel_path = treestore.get_path(node_parms.sel_iter)
        treeview_2.expand_to_path(sel_path)
        treeview_2.set_cursor(sel_path)
        treeview_2.scroll_to_cell(sel_path)
    response = dialog.run()
    dialog.hide()
    return None if response != gtk.RESPONSE_ACCEPT else node_parms.sel_iter

def dialog_selnode_selnodeandsub_alltree(dad, also_selection, also_include_node_name=False, also_new_node_page=False, also_index_in_page=False):
    """Dialog to select between the Selected Node/Selected Node + Subnodes/All Tree"""
    dialog = gtk.Dialog(title=_("Involved Nodes"),
        parent=dad.window,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
        gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    if also_selection: radiobutton_selection = gtk.RadioButton(label=_("Selected Text Only"))
    radiobutton_selnode = gtk.RadioButton(label=_("Selected Node Only"))
    radiobutton_selnodeandsub = gtk.RadioButton(label=_("Selected Node and Subnodes"))
    radiobutton_alltree = gtk.RadioButton(label=_("All the Tree"))
    radiobutton_selnodeandsub.set_group(radiobutton_selnode)
    radiobutton_alltree.set_group(radiobutton_selnode)
    if also_selection: radiobutton_selection.set_group(radiobutton_selnode)
    content_area = dialog.get_content_area()
    if also_selection: content_area.pack_start(radiobutton_selection)
    content_area.pack_start(radiobutton_selnode)
    content_area.pack_start(radiobutton_selnodeandsub)
    content_area.pack_start(radiobutton_alltree)
    if also_include_node_name:
        separator_item = gtk.HSeparator()
        checkbutton_node_name = gtk.CheckButton(label=_("Include Node Name"))
        checkbutton_node_name.set_active(dad.last_include_node_name)
        content_area.pack_start(separator_item)
        content_area.pack_start(checkbutton_node_name)
    if also_index_in_page:
        separator_item = gtk.HSeparator()
        checkbutton_index_in_page = gtk.CheckButton(label=_("Links Tree in Every Page"))
        checkbutton_index_in_page.set_active(dad.last_index_in_page)
        content_area.pack_start(separator_item)
        content_area.pack_start(checkbutton_index_in_page)
    if also_new_node_page:
        checkbutton_new_node_page = gtk.CheckButton(label=_("New Node in New Page"))
        checkbutton_new_node_page.set_active(dad.last_new_node_page)
        content_area.pack_start(checkbutton_new_node_page)
    def on_key_press_enter_dialog(widget, event):
        if gtk.gdk.keyval_name(event.keyval) == cons.STR_KEY_RETURN:
            try: dialog.get_widget_for_response(gtk.RESPONSE_ACCEPT).clicked()
            except: print cons.STR_PYGTK_222_REQUIRED
            return True
        return False
    dialog.connect("key_press_event", on_key_press_enter_dialog)
    content_area.show_all()
    response = dialog.run()
    if radiobutton_selnode.get_active(): ret_val = 1
    elif radiobutton_selnodeandsub.get_active(): ret_val = 2
    elif radiobutton_alltree.get_active(): ret_val = 3
    else: ret_val = 4
    if also_include_node_name:
        dad.last_include_node_name = checkbutton_node_name.get_active()
    if also_index_in_page:
        dad.last_index_in_page = checkbutton_index_in_page.get_active()
    if also_new_node_page:
        dad.last_new_node_page = checkbutton_new_node_page.get_active()
    dialog.destroy()
    if response != gtk.RESPONSE_ACCEPT: ret_val = 0
    return ret_val

def set_bookmarks_menu_items(inst):
    """Set Bookmarks Menu Items"""
    bookmarks_menu = inst.ui.get_widget("/MenuBar/BookmarksMenu").get_submenu()
    for menu_item in inst.bookmarks_menu_items:
        bookmarks_menu.remove(menu_item)
    menu_item = gtk.SeparatorMenuItem()
    menu_item.show()
    bookmarks_menu.append(menu_item)
    inst.bookmarks_menu_items = [menu_item]
    bookmarks_to_rm = []
    for node_id_str in inst.bookmarks:
        if not long(node_id_str) in inst.nodes_names_dict:
            bookmarks_to_rm.append(node_id_str)
            continue
        menu_item = gtk.ImageMenuItem(inst.nodes_names_dict[long(node_id_str)])
        menu_item.set_image(gtk.image_new_from_stock("pin", gtk.ICON_SIZE_MENU))
        menu_item.connect("activate", select_bookmark_node, node_id_str, inst)
        menu_item.show()
        bookmarks_menu.append(menu_item)
        inst.bookmarks_menu_items.append(menu_item)
    for element in bookmarks_to_rm: inst.bookmarks.remove(element)

def set_menu_items_special_chars(inst):
    """Set Special Chars menu items"""
    if not "special_menu_1" in dir(inst):
        inst.special_menu_1 = gtk.Menu()
        first_run = True
    else:
        children_1 = inst.special_menu_1.get_children()
        for children in children_1:
            children.hide()
            del children
        first_run = False
    for special_char in inst.special_chars:
        menu_item = gtk.MenuItem(special_char)
        menu_item.connect("activate", insert_special_char, special_char, inst)
        menu_item.show()
        inst.special_menu_1.append(menu_item)
    if first_run:
        # main menu
        special_menuitem = gtk.ImageMenuItem(_("Insert _Special Character"))
        special_menuitem.set_image(gtk.image_new_from_stock("insert", gtk.ICON_SIZE_MENU))
        special_menuitem.set_tooltip_text(_("Insert a Special Character"))
        special_menuitem.set_submenu(inst.special_menu_1)
        inst.ui.get_widget("/MenuBar/EditMenu").get_submenu().insert(special_menuitem, 14)

def set_menu_items_recent_documents(inst):
    """Set Recent Documents menu items on Menu and Toolbar"""
    if not "recent_menu_1" in dir(inst):
        inst.recent_menu_1 = gtk.Menu()
        inst.recent_menu_2 = gtk.Menu()
        first_run = True
    else:
        children_1 = inst.recent_menu_1.get_children()
        children_2 = inst.recent_menu_2.get_children()
        for children in children_1:
            children.hide()
            del children
        for children in children_2:
            children.hide()
            del children
        first_run = False
    for target in [1, 2]:
        for i, filepath in enumerate(inst.recent_docs):
            if i >= cons.MAX_RECENT_DOCS: break
            menu_item = gtk.ImageMenuItem(filepath)
            menu_item.set_image(gtk.image_new_from_stock("gtk-open", gtk.ICON_SIZE_MENU))
            menu_item.connect("activate", open_recent_document, filepath, inst)
            menu_item.show()
            if target == 1: inst.recent_menu_1.append(menu_item)
            else: inst.recent_menu_2.append(menu_item)
    if first_run:
        # main menu
        recent_menuitem = gtk.ImageMenuItem(_("_Recent Documents"))
        recent_menuitem.set_image(gtk.image_new_from_stock("gtk-open", gtk.ICON_SIZE_MENU))
        recent_menuitem.set_tooltip_text(_("Open a Recent CherryTree Document"))
        recent_menuitem.set_submenu(inst.recent_menu_1)
        inst.ui.get_widget("/MenuBar/FileMenu").get_submenu().insert(recent_menuitem, 3)
        # toolbar
        if inst.toolbar_open_n_recent >= 0:
            menu_toolbutton = gtk.MenuToolButton("gtk-open")
            menu_toolbutton.set_tooltip_text(_("Open a CherryTree Document"))
            menu_toolbutton.set_arrow_tooltip_text(_("Open a Recent CherryTree Document"))
            menu_toolbutton.set_menu(inst.recent_menu_2)
            menu_toolbutton.connect("clicked", inst.file_open)
            inst.ui.get_widget("/ToolBar").insert(menu_toolbutton, inst.toolbar_open_n_recent)

def add_recent_document(inst, filepath):
    """Add a Recent Document if Needed"""
    if filepath in inst.recent_docs and inst.recent_docs[0] == filepath:
        return
    if filepath in inst.recent_docs: inst.recent_docs.remove(filepath)
    inst.recent_docs.insert(0, filepath)
    set_menu_items_recent_documents(inst)

def insert_special_char(menu_item, special_char, dad):
    """A Special character insert was Requested"""
    text_view, text_buffer, from_codebox = dad.get_text_view_n_buffer_codebox_proof()
    if not text_buffer: return
    text_buffer.insert_at_cursor(special_char)

def open_recent_document(menu_item, filepath, dad):
    """A Recent Document was Requested"""
    if os.path.isfile(filepath):
        #dad.filepath_boss_open(filepath, "")
        dad.filepath_open(filepath)
    else:
        dialog_error(_("The Document %s was Not Found") % filepath, dad.window)
        try:
            idx = dad.recent_docs.index(filepath)
            dad.recent_docs.append(dad.recent_docs.pop(idx))
            set_menu_items_recent_documents(dad)
        except:
            pass

def select_bookmark_node(menu_item, node_id_str, dad):
    """Select a Node in the Bookmarks List"""
    node_iter = dad.get_tree_iter_from_node_id(long(node_id_str))
    if node_iter: dad.treeview_safe_set_cursor(node_iter)

def bookmarks_handle(dad):
    """Handle the Bookmarks List"""
    dialog = gtk.Dialog(title=_("Handle the Bookmarks List"),
        parent=dad.window,
        flags=gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
        buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
        gtk.STOCK_OK, gtk.RESPONSE_ACCEPT) )
    dialog.set_default_size(500, 400)
    dialog.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
    liststore = gtk.ListStore(str, str, str)
    for node_id_str in dad.bookmarks:
        # icon, node name, node id string
        liststore.append(["pin", dad.nodes_names_dict[long(node_id_str)], node_id_str])
    treeview = gtk.TreeView(liststore)
    treeview.set_headers_visible(False)
    treeview.set_reorderable(True)
    treeviewselection = treeview.get_selection()
    def on_key_press_liststore(widget, event):
        keyname = gtk.gdk.keyval_name(event.keyval)
        if keyname == cons.STR_KEY_DELETE:
            model, tree_iter = treeviewselection.get_selected()
            if tree_iter: model.remove(tree_iter)
    def on_mouse_button_clicked_liststore(widget, event):
        """Catches mouse buttons clicks"""
        if event.button != 1: return
        if event.type != gtk.gdk._2BUTTON_PRESS: return
        path_n_tvc = treeview.get_path_at_pos(int(event.x), int(event.y))
        if not path_n_tvc: return
        tree_path = path_n_tvc[0]
        dad_tree_path = dad.get_tree_iter_from_node_id(long(liststore[tree_path][2]))
        dad.treeview_safe_set_cursor(dad_tree_path)
    treeview.connect('key_press_event', on_key_press_liststore)
    treeview.connect('button-press-event', on_mouse_button_clicked_liststore)
    renderer_pixbuf = gtk.CellRendererPixbuf()
    renderer_text = gtk.CellRendererText()
    column = gtk.TreeViewColumn()
    column.pack_start(renderer_pixbuf, False)
    column.pack_start(renderer_text, True)
    column.set_attributes(renderer_pixbuf, stock_id=0)
    column.set_attributes(renderer_text, text=1)
    treeview.append_column(column)
    scrolledwindow = gtk.ScrolledWindow()
    scrolledwindow.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
    scrolledwindow.add(treeview)
    content_area = dialog.get_content_area()
    hbox = gtk.HBox()
    vbox = gtk.VBox()
    vbox.set_spacing(1)
    button_move_up = gtk.Button()
    button_move_up.set_image(gtk.image_new_from_stock("gtk-go-up", gtk.ICON_SIZE_DND))
    button_move_down = gtk.Button()
    button_move_down.set_image(gtk.image_new_from_stock("gtk-go-down", gtk.ICON_SIZE_DND))
    button_delete = gtk.Button()
    button_delete.set_image(gtk.image_new_from_stock("gtk-clear", gtk.ICON_SIZE_DND))
    button_sort_desc = gtk.Button()
    button_sort_desc.set_image(gtk.image_new_from_stock("gtk-sort-descending", gtk.ICON_SIZE_DND))
    button_sort_asc = gtk.Button()
    button_sort_asc.set_image(gtk.image_new_from_stock("gtk-sort-ascending", gtk.ICON_SIZE_DND))
    def on_button_move_up_clicked(*args):
        model, tree_iter = treeviewselection.get_selected()
        if tree_iter:
            prev_iter = dad.get_tree_iter_prev_sibling(model, tree_iter)
            if prev_iter:
                model.swap(tree_iter, prev_iter)
    button_move_up.connect('clicked', on_button_move_up_clicked)
    def on_button_move_down_clicked(*args):
        model, tree_iter = treeviewselection.get_selected()
        if tree_iter:
            next_iter = model.iter_next(tree_iter)
            if next_iter:
                model.swap(tree_iter, next_iter)
    button_move_down.connect('clicked', on_button_move_down_clicked)
    def on_button_delete_clicked(*args):
        model, tree_iter = treeviewselection.get_selected()
        if tree_iter:
            model.remove(tree_iter)
    button_delete.connect('clicked', on_button_delete_clicked)
    def on_button_sort_desc_clicked(*args):
        while dad.node_siblings_sort_iteration(liststore, None, False, 1):
            pass
    button_sort_desc.connect('clicked', on_button_sort_desc_clicked)
    def on_button_sort_asc_clicked(*args):
        while dad.node_siblings_sort_iteration(liststore, None, True, 1):
            pass
    button_sort_asc.connect('clicked', on_button_sort_asc_clicked)
    vbox.pack_start(button_move_up, expand=False)
    vbox.pack_start(button_move_down, expand=False)
    vbox.pack_start(button_delete, expand=False)
    vbox.pack_start(gtk.Label(), expand=True)
    vbox.pack_start(button_sort_desc, expand=False)
    vbox.pack_start(button_sort_asc, expand=False)
    vbox.pack_start(gtk.Label(), expand=True)
    hbox.pack_start(scrolledwindow, expand=True)
    hbox.pack_start(vbox, expand=False)
    content_area.pack_start(hbox)
    content_area.show_all()
    response = dialog.run()
    temp_bookmarks = []
    tree_iter = liststore.get_iter_first()
    while tree_iter != None:
        temp_bookmarks.append(liststore[tree_iter][2])
        tree_iter = liststore.iter_next(tree_iter)
    dialog.destroy()
    if response != gtk.RESPONSE_ACCEPT: return False
    removed_bookmarks = []
    for old_bookmark in dad.bookmarks:
        if not old_bookmark in temp_bookmarks:
            removed_bookmarks.append(old_bookmark)
    dad.bookmarks = temp_bookmarks
    for removed_bookmark in removed_bookmarks:
        tree_iter = dad.get_tree_iter_from_node_id(int(removed_bookmark))
        if tree_iter:
            dad.update_node_pre_icon(tree_iter)
            if dad.curr_tree_iter and dad.treestore[tree_iter][3] == dad.treestore[dad.curr_tree_iter][3]:
                dad.menu_tree_update_for_bookmarked_node(False)
    set_bookmarks_menu_items(dad)
    dad.ctdb_handler.pending_edit_db_bookmarks()
    return True

def set_object_highlight(inst, obj_highl):
    """Set the Highlight to obj_highl only"""
    if inst.highlighted_obj:
        inst.highlighted_obj.drag_unhighlight()
        inst.highlighted_obj = None
    if obj_highl:
        obj_highl.drag_highlight()
        inst.highlighted_obj = obj_highl
