import appModuleHandler
import ui
from NVDAObjects.window import Window
from NVDAObjects.window.edit import Edit
import comtypes.client
#from tones import beep
import config

class AppModule(appModuleHandler.AppModule):

	def chooseNVDAObjectOverlayClasses(self, obj, clsList):
		if isinstance(obj, Window) and(
		obj.windowClassName == u'TJvEditor' or
		obj.windowClassName == u'TEdit' and obj.windowStyle== 1409353920):
			clsList.insert(0, LambdaEditField)

class LambdaEditField(Edit):

	COMCLASS="lambda.lambdaobj"

	def say(self,what):
		if(what==self.empty):
			return
		ui.message(what)

	def event_gainFocus(self): #initialization
		self.l=comtypes.client.GetActiveObject(self.COMCLASS)
		if self.l:
			self.empty=self.l.getnone()
		if(not self.empty):
			self.empty=""
		s=self.l.getline(self.windowHandle, -1, -1)
		self.say(s)
		self.initAutoSelectDetection()

	def event_valueChange(self): # typing echo. don't know whi i can't use self.l in  this event
		l=comtypes.client.GetActiveObject(self.COMCLASS)
		if config.conf["keyboard"]["speakTypedCharacters"]:
			s=l.getlastinsertedel(self.windowHandle,1)
		ui.message(s)

	def event_typedCharacter(self,ch): # we don't want nvda-s typing echo
		pass

	def script_caret_moveByCharacter(self,gesture):
		gesture.send()
		s=self.l.getchar(self.windowHandle, -1, -1)
		self.say(s)

	def script_caret_moveByLine(self,gesture):
		gesture.send()
		s=self.l.getline(self.windowHandle, -1, -1)
		self.say(s)

	def script_caret_moveByWord(self,gesture):
		gesture.send()
		s=self.l.getword(self.windowHandle, -1, -1)
		self.say(s)

	def script_caret_moveByParagraph(self,gesture):
		self.script_caret_moveByLine(gesture)

	def script_caret_backspaceCharacter(self,gesture):
		gesture.send()
		s=self.l.getlastdeleted(self.windowHandle)
		self.say(s)

	def script_caret_delete(self,gesture):
		self.script_caret_backspaceCharacter(gesture)

	def script_sayAll(self, gesture): # this is not nice! todo: check howto improwe this
		s=self.l.getall(self.windowHandle)
		self.say(s)

	def script_sayHighlighted(self, gesture):
		s=self.l.getselected(self.windowHandle)
		self.say(s)

	def script_saySpecialHighlight(self, gesture): # ctrl+b and ctrl+shift+b hotkeys
		gesture.send()
		self.initAutoSelectDetection()
		self.script_sayHighlighted(gesture)

	def initAutoSelectDetection(self):
		self.s=""
		s=self.l.getselected(self.windowHandle)
		if s:
			self.s=s

	def detectPossibleSelectionChange(self):
		s=self.l.gethighlightedtext(self.windowHandle)
		if not s:
			s=""
		if len(s)>len(self.s):
			self.say("selecting " +s[len(self.s):len(s)])
		elif len(s)<len(self.s):
			self.say("unselecting "+self.s[len(s):len(self.s)])
		self.s=s

	__gestures = {
		"kb:nvda+downArrow": "sayAll",
		"kb:nvda+shift+upArrow": "sayHighlighted",
		"kb:control+shift+b": "saySpecialHighlight",
		"kb:control+b": "saySpecialHighlight",
	}