retry grabbing

src/fenrirscreenreader/core/inputDriver.py

@@ -36,10 +36,12 @@ class inputDriver():
             return
     def grabAllDevices(self):
         if not self._initialized:
-            return
+            return True
+        return True
     def ungrabAllDevices(self):
         if not self._initialized:
-            return
+            return True
+        return True
     def hasIDevices(self):
         if not self._initialized:
             return False

src/fenrirscreenreader/core/inputManager.py

@@ -57,11 +57,13 @@ class inputManager():
         if not self.noKeyPressed():
             return
         if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
+            self.executeDeviceGrab = False
             return
         if self.env['runtime']['screenManager'].getCurrScreenIgnored():
-            self.ungrabAllDevices()
+            if self.ungrabAllDevices():
+                self.executeDeviceGrab = False
         else:
-            self.grabAllDevices()
+            if self.grabAllDevices():
                 self.executeDeviceGrab = False
     def sendKeys(self, keyMacro):
         for e in keyMacro:
@@ -143,15 +145,17 @@ class inputManager():
     def grabAllDevices(self):
         if self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
             try:
-                self.env['runtime']['inputDriver'].grabAllDevices()
+                return self.env['runtime']['inputDriver'].grabAllDevices()
             except Exception as e:
-                pass
+                return False
+        return True
     def ungrabAllDevices(self):
         if self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
             try:
-                self.env['runtime']['inputDriver'].ungrabAllDevices()
+                return self.env['runtime']['inputDriver'].ungrabAllDevices()
             except Exception as e:
-                pass
+                return False
+        return True
     def handlePlugInputDevice(self, eventData):
         for deviceEntry in eventData:
             self.env['runtime']['inputManager'].updateInputDevices(deviceEntry['device'])

src/fenrirscreenreader/core/screenManager.py

@@ -48,7 +48,6 @@ class screenManager():
             self.env['runtime']['screenDriver'].getSessionInformation()
         except:
             pass
-            
     def shutdown(self):
         self.env['runtime']['settingsManager'].shutdownDriver('screenDriver')
     def isCurrScreenIgnoredChanged(self):
@@ -60,16 +59,13 @@ class screenManager():
         if self.isCurrScreenIgnoredChanged():
             self.env['runtime']['inputManager'].setExecuteDeviceGrab()
         self.env['runtime']['inputManager'].handleDeviceGrab()
-              
         if self.isScreenChange():
             self.changeBrailleScreen() 
-
         if not self.isSuspendingScreen(self.env['screen']['newTTY']):
             self.update(eventData, 'onScreenChange')
             self.env['screen']['lastScreenUpdate'] = time.time()
         else:
             self.env['runtime']['outputManager'].interruptOutput()
-                 
     def handleScreenUpdate(self, eventData):
         self.env['screen']['oldApplication'] = self.env['screen']['newApplication'] 
         self.updateScreenIgnored() 

src/fenrirscreenreader/inputDriver/evdevDriver.py

@@ -281,16 +281,18 @@ class driver(inputDriver):
                         self.iDevices[i].set_led(led , 1)
     def grabAllDevices(self):
         if not self._initialized:
-            return
+            return True
+        ok = True
         for fd in self.iDevices:
-            self.grabDevice(fd)
+            ok = ok and self.grabDevice(fd)
-
+        return ok
     def ungrabAllDevices(self):
         if not self._initialized:
-            return
+            return True
+        ok = True
         for fd in self.iDevices:
-            self.ungrabDevice(fd)
+            ok = ok and self.ungrabDevice(fd)
-
+        return ok
     def createUInputDev(self, fd):
         if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
             self.uDevices[fd] = None
@@ -324,7 +326,7 @@ class driver(inputDriver):
         self.createUInputDev(newDevice.fd)
     def grabDevice(self, fd):
         if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
-            return
+            return True
         try:
             self.iDevices[fd].grab()
             self.gDevices[fd] = True
@@ -333,15 +335,20 @@ class driver(inputDriver):
             self.gDevices[fd] = True
         except Exception as e:
             self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: grabing not possible:  ' + str(e),debug.debugLevel.ERROR)
+            return False
+        return True
     def ungrabDevice(self,fd):
         if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
-            return
+            return True
         try:
-            self.gDevices[fd] = False
             self.iDevices[fd].ungrab()
+            self.gDevices[fd] = False
             self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: ungrab device ('+ str(self.iDevices[fd].name) + ')',debug.debugLevel.INFO)
-        except:
+        except IOError:
-            pass
+            self.gDevices[fd] = False
+        except Exception as e:
+            return False
+        return True
     def removeDevice(self,fd):
         self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: device removed:  ' + str(fd) + ' ' +str(self.iDevices[fd]),debug.debugLevel.INFO)
         self.clearEventBuffer()