initial onApplicationChange trigger

TODO

@@ -22,8 +22,7 @@ ToDos in Priority order:
 - punctuation
 - New Triggers
   onAppChange
-  onScreenChange
+
-  rename current onScreenChange to onScreenUpdate
 - add perApplicationTrigger trigger
   per application commands
   per application onScreenChange
@@ -215,3 +214,7 @@ ps a -o tty,comm  | grep -e Xorg | grep -v "grep -e Xorg"
 - add screenManager
   abstract screen driver
 - pass environment instance in init and remove it from function calls
+
+- New Triggers
+  onScreenChange
+  rename current onScreenChange to onScreenUpdate  

src/fenrir-package/commands/onApplicationChange/command_template.py

@@ -0,0 +1,24 @@
+#!/bin/python
+# -*- coding: utf-8 -*-
+
+# Fenrir TTY screen reader
+# By Chrys, Storm Dragon, and contributers.
+
+from core import debug
+
+class command():
+    def __init__(self):
+        pass
+    def initialize(self, environment):
+        self.env = environment
+    def shutdown(self):
+        pass
+    def getDescription(self):
+        return 'No description found'         
+    def run(self):
+        print('new %s', self.env['screenData']['newApplication'])
+        print('old %s', self.env['screenData']['oldApplication'])
+        print('-----------')
+        
+    def setCallback(self, callback):
+        pass

src/fenrir-package/core/commandManager.py

@@ -17,12 +17,14 @@ class commandManager():
         self.env['runtime']['commandManager'].loadCommands('onInput')
         self.env['runtime']['commandManager'].loadCommands('onScreenUpdate')         
         self.env['runtime']['commandManager'].loadCommands('onScreenChanged')
+        self.env['runtime']['commandManager'].loadCommands('onApplicationChange')          
 
     def shutdown(self):
         self.env['runtime']['commandManager'].shutdownCommands('commands')
         self.env['runtime']['commandManager'].shutdownCommands('onInput')
         self.env['runtime']['commandManager'].shutdownCommands('onScreenUpdate')         
         self.env['runtime']['commandManager'].shutdownCommands('onScreenChanged')    
+        self.env['runtime']['commandManager'].shutdownCommands('onApplicationChange') 
         
     def loadCommands(self, section='commands'):
         commandFolder = "commands/" + section +"/"

src/fenrir-package/core/commands.py

@@ -34,6 +34,8 @@ commands = {
     },
 'onScreenUpdate':{
     },
+'onApplicationChange':{
+    },   
 'commands':{
-    }
+    },
 }

src/fenrir-package/fenrir.py

@@ -50,6 +50,8 @@ class fenrir():
             print(e)
             self.environment['runtime']['debug'].writeDebugOut(str(e),debug.debugLevel.ERROR)         
         
+        if self.environment['screenData']['newApplication'] != self.environment['screenData']['oldApplication']:
+            self.environment['runtime']['commandManager'].executeTriggerCommands('onApplicationChange')
         self.environment['runtime']['commandManager'].executeTriggerCommands('onInput')
         if self.environment['screenData']['newTTY'] == self.environment['screenData']['oldTTY']:                 
             self.environment['runtime']['commandManager'].executeTriggerCommands('onScreenUpdate')         

src/fenrir-package/screenDriver/linux.py

@@ -113,7 +113,6 @@ class driver():
             self.env['screenData']['oldCursor']['y'] = 0
             self.env['screenData']['oldDelta'] = ''
             self.env['screenData']['oldNegativeDelta'] = ''
-            self.env['screenData']['oldApplication'] = ''
         # always clear current deltas
         self.env['screenData']['newNegativeDelta'] = ''
         self.env['screenData']['newDelta'] = ''