#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# Fenrir TTY screen reader
# By Chrys, Storm Dragon, and contributers.

from fenrirscreenreader.core import debug

class cursorManager():
    def __init__(self):
        pass
    def initialize(self, environment):
        self.env = environment
    def shouldProcessNumpadCommands(self):
        """
        Check if numpad commands should be processed based on numlock state
        Return True if numlock is OFF (commands should work)
        Return False if numlock is ON (let keys type numbers)
        """
        # Return False if numlock is ON
        return not self.env['input']['newNumLock']
    def shutdown(self):
        pass
    def clearMarks(self):
        self.env['commandBuffer']['Marks']['1'] = None
        self.env['commandBuffer']['Marks']['2'] = None
    def isMarkSet(self):
        return self.env['commandBuffer']['Marks']['1'] != None
    def isSingleMark(self):
        return self.env['commandBuffer']['Marks']['1'] != None and \
          self.env['commandBuffer']['Marks']['2'] == None
    def isMultibleMark(self):
        return self.env['commandBuffer']['Marks']['1'] != None and \
          self.env['commandBuffer']['Marks']['2'] != None        
    def setMark(self):
        currCursor = None
        if self.env['screen']['newCursorReview']:
            currCursor = self.env['screen']['newCursorReview'].copy()
        else:
            currCursor = self.env['screen']['newCursor'].copy()
        if not self.env['commandBuffer']['Marks']['1']:
            self.env['commandBuffer']['Marks']['1'] = currCursor.copy()
            return 1
        else:
            self.env['commandBuffer']['Marks']['2'] = currCursor.copy()
            return 2
        return 0
    def getReviewOrTextCursor(self):
        if self.env['screen']['newCursorReview']:
            return self.env['screen']['newCursorReview'].copy()
        else:
            return self.env['screen']['newCursor'].copy()
    def clearReviewCursor(self):
        if not self.isReviewMode():
            return
        self.env['screen']['oldCursorReview'] = None
        self.env['screen']['newCursorReview'] = None

    def isCursorHorizontalMove(self):
        return self.env['screen']['newCursor']['x'] != self.env['screen']['oldCursor']['x']

    def isCursorVerticalMove(self):
        return self.env['screen']['newCursor']['y'] != self.env['screen']['oldCursor']['y']

    def isReviewMode(self):
        return self.env['screen']['newCursorReview'] != None

    def enterReviewModeCurrTextCursor(self, overwrite=False):
        if self.isReviewMode() and not overwrite:
            return
        self.env['screen']['oldCursorReview'] = self.env['screen']['newCursorReview']
        if not self.env['screen']['newCursorReview']:
            self.env['screen']['newCursorReview'] = self.env['screen']['newCursor'].copy()
            if self.env['runtime']['settingsManager'].getSettingAsBool('focus', 'highlight') and \
              self.env['runtime']['attributeManager'].isAttributeCursorActive():
                  self.env['screen']['newCursorReview'] = self.env['runtime']['attributeManager'].getCurrAttributeCursor().copy()          

    def setReviewCursorPosition(self, x, y):
        if not self.isReviewMode():
            self.enterReviewModeCurrTextCursor()
        self.env['screen']['oldCursorReview'] = self.env['screen']['newCursorReview']
        self.env['screen']['newCursorReview']['x'] = x
        self.env['screen']['newCursorReview']['y'] = y

    def isApplicationWindowSet(self):
        try:
            currApp = self.env['runtime']['applicationManager'].getCurrentApplication()
            if self.env['commandBuffer']['windowArea'][currApp]['1'] != None:
                return True
        except:
            pass
        return False
    def setWindowForApplication(self, start = None, end = None):
        x1 = 0
        x2 = 0
        y1 = 0
        y2 = 0
        if start == None:
            if not self.env['commandBuffer']['Marks']['1']:
                return False
            else:
                x1 = self.env['commandBuffer']['Marks']['1']['x']
                y1 = self.env['commandBuffer']['Marks']['1']['y']
        else:
            x1 = start['x']
            y1 = start['y']
        if end == None:            
            if not self.env['commandBuffer']['Marks']['2']:
                return False
            else:
                x1 = self.env['commandBuffer']['Marks']['2']['x']
                y1 = self.env['commandBuffer']['Marks']['2']['y']    
        else:
            x1 = start['x']
            y1 = start['y']        

        currApp = self.env['runtime']['applicationManager'].getCurrentApplication()
        self.env['commandBuffer']['windowArea'][currApp] = {}

        if x1 * y1 <= \
          x2 * y2:
            self.env['commandBuffer']['windowArea'][currApp]['1'] = {'x':x1, 'y':y1}
            self.env['commandBuffer']['windowArea'][currApp]['2'] = {'x':x2, 'y':y2}
        else:
            self.env['commandBuffer']['windowArea'][currApp]['1'] = {'x':x2, 'y':y2}
            self.env['commandBuffer']['windowArea'][currApp]['2'] = {'x':x1, 'y':y1}
        return True   
    def clearWindowForApplication(self):
        currApp = self.env['runtime']['applicationManager'].getCurrentApplication()
        try:
            del self.env['commandBuffer']['windowArea'][currApp]
        except:
            return False
        return True