# -*- coding: utf8 -*-
# XML Helper for GEdit
# 
# Copyright (c) 2007 Matej Cepl <matej@ceplovi.cz>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
# 
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

import gedit
import gtk
import re,sys

end_tag_str = """
<ui>
	<menubar name="MenuBar">
		<menu name="EditMenu" action="Edit">
			<placeholder name="EditOps_6">
				<menuitem name="EndTag" action="EndTag"/>
			</placeholder>
		</menu>
	</menubar>
</ui>
"""

class EndTagPlugin(gedit.Plugin):
	def __init__(self):
		gedit.Plugin.__init__(self)
		
	def __extract_element(self,tag):
		buf = ""
		for char in tag:
			uc = unicode(char)
			buf += uc
			if (uc.isspace() or uc == ">"):
				ubuf=None
				break
		return buf

	def __find_previous_end_tag(self,buffer,position):
		# var
		# buffer: GtkTextBuffer
		# position, match, match_start: GtkTextIter
		# tag, element: string
		#
		# gtk_text_iter_backward_search (position, "</", 0, &match, NULL, NULL))
		gedit.Document.set_search_text("</")
		if not(gedit.Document.search_backward()):
			# there is no tag anywhere before the cursor; nothing to do
			return None
		
		match_start = match
		gtk_text_iter_forward_chars(match,2)
		tag = gtk_text_iter_get_visible_text(match,position)
		element = extract_element(tag)
		g_free(tag)
		
		position = match_start
		
		return element

		
	def __last_endable_tag(self):
		pass

	def end_tag(self, action, window):
		view = window.get_active_view()
		buffer = view.get_buffer()
		inp_mark = buffer.get_mark("input")
		print >>sys.stderr,inp_mark
		inp = buffer.get_iter_at_mark(inp_mark)
		cur = buffer.get_end_iter()
		line = buffer.get_text(inp, cur)
		document=window.get_active_document()
		document.set_search_text("<",0)
		document.search_backward()
		tagname=None #find out what is the current tag
		view.do_insert_at_cursor(view, '</%s>' % tagname)

	def activate(self, window):
		actions = [
			('EndTag', None, 'End Tag', None, "End Tag", self.end_tag),
		]

		# store per window data in the window object
		windowdata = dict()
		window.set_data("EndTagPluginWindowDataKey", windowdata)
		windowdata["action_group"] = gtk.ActionGroup("GeditEndTagPluginActions")
		windowdata["action_group"].add_actions(actions, window)
		manager = window.get_ui_manager()
		manager.insert_action_group(windowdata["action_group"], -1)
		windowdata["ui_id"] = manager.add_ui_from_string(end_tag_str)
		
		window.set_data("EndTagPluginInfo", windowdata)

	def deactivate(self, window):
		windowdata = window.get_data("EndTagPluginWindowDataKey")
		manager = window.get_ui_manager()
		manager.remove_ui(windowdata["ui_id"])
		manager.remove_action_group(windowdata["action_group"])

	def update_ui(self, window):
		view = window.get_active_view()
		windowdata = window.get_data("EndTagPluginWindowDataKey")
		windowdata["action_group"].set_sensitive(bool(view and view.get_editable()))