Changeset 9e776f for src/Patterns/Observer.hpp

Timestamp:

Sep 1, 2011, 1:51:25 PM (14 years ago)

Author:

Frederik Heber <heber@…>

Children:

d45509

Parents:

74e0f7

Message:

Observable::signOn/Off functions are now on const instance possible.

• maps of Observable are static anyway.
• we need some const_casts as instances in maps (which we need as lookup key in sign on/off) are non-const.
• whether there are more or fewer observers does not impact on the constness of a class but only affects a mutable part.

File:

• src/Patterns/Observer.hpp (modified) (3 diffs)

src/Patterns/Observer.hpp

@@ -122 +122 @@
    * ussually no need to order the update sequence.
    */
-  virtual void signOn(Observer *target, int priority=0);
+  virtual void signOn(Observer *target, int priority=0) const;
 
   /**
@@ -128 +128 @@
    * updates will be recieved from that observer.
    */
-  virtual void signOff(Observer *target);
+  virtual void signOff(Observer *target) const;
 
   /**
    * Sign on for specialized notifications
    */
-  virtual void signOn(Observer *target, Notification_ptr notification);
+  virtual void signOn(Observer *target, Notification_ptr notification) const;
 
   /**
    * Stop receiving a specialized notification
    */
-  virtual void signOff(Observer *target, Notification_ptr notification);
+  virtual void signOff(Observer *target, Notification_ptr notification) const;
 
   /**
@@ -144 +144 @@
    * Changes are in Progress, that are not yet published.
    */
-  virtual bool isBlocked();
+  virtual bool isBlocked() const;
 
   Notification_ptr getChannel(size_t no) const;