添加观察者模式

src/pattern/Observer.cpp

@@ -3,31 +3,40 @@
 //
 
 #include "Observer.h"
+template<typename T>
+int Observed<T>::AddObserver(Observer<T> *p) {
+    if(nullptr == p){
+        return -1;
+    }
 
-
-int Observed::AddObserver(Observer *p) {
-        if(nullptr == p){
-            return -1;
-        }
-        for(std::vector<Observer*>::iterator itr = m_vObservers.begin();
-            itr != m_vObservers.end();itr++){
-            if(((Observer*)*itr) == p){
-                return 0;
-            }
-        }
-        this->m_vObservers.push_back(p);
-}
-
-int Observed::DeleteObserver(Observer *p) {
-    for(std::vector<Observer*>::iterator itr = m_vObservers.begin();
+    for(typename std::vector<Observer<T>*>::iterator itr = m_vObservers.begin();
         itr != m_vObservers.end();itr++){
-        if(((Observer*)*itr) == p){
+        if(((Observer<T>*)*itr) == p){
+            return 0;
+        }
+    }
+    this->m_vObservers.push_back(p);
+    return 0;
+}
+template<typename T>
+int Observed<T>::DeleteObserver(Observer<T> *p) {
+    for(typename  std::vector<Observer<T>*>::iterator itr = m_vObservers.begin();
+        itr != m_vObservers.end();itr++){
+        if(((Observer<T>*)*itr) == p){
             return 0;
         }
     }
     return 0;
 }
-
-int Observed::NoticeObserver() {
+template<typename T>
+int Observed<T>::NoticeObserver(T *p) {
+    if(nullptr == p){
+        return  -1;
+    }
+    for(typename  std::vector<Observer<T>*>::iterator itr = m_vObservers.begin();
+        itr != m_vObservers.end();itr++){
+        ((Observer<T>*)*itr)->OnNotifyData(p);
+    }
     return 0;
 }
+

src/pattern/Observer.h

@@ -5,27 +5,27 @@
 #ifndef GENERAL_OBSERVER_H
 #define GENERAL_OBSERVER_H
 
-
 #include <memory>
 #include <vector>
 
-class Observer;
+template <typename  T> class Observer;
 
 template <typename T> class Observed{
 public:
     virtual  ~Observed(){};
-    int AddObserver(Observer *);     // 添加观察者
-    int DeleteObserver(Observer *);   // 删除观察者
-    int NoticeObserver();
+    virtual  int AddObserver(Observer <T>*);     // 添加观察者
+    virtual int DeleteObserver(Observer <T>*);   // 删除观察者
+    virtual int NoticeObserver(T *);
 protected:
-    std::vector<Observer*> m_vObservers;
+    std::vector<Observer <T>*> m_vObservers;
 };
 
-class Observer
+template <typename  T>class Observer
 {
 public:
-    void OnNotifyData();
+    virtual void OnNotifyData(T* ){};
 private:
 
 };
+
 #endif //GENERAL_OBSERVER_H