From 08ab881a480a73d6be005c4b4e1cf35814b53e3c Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sat, 17 Oct 2020 15:22:09 +0800
Subject: +init

---
 modules/std/event.qs | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 modules/std/event.qs

(limited to 'modules/std/event.qs')

diff --git a/modules/std/event.qs b/modules/std/event.qs
new file mode 100644
index 0000000..d4f2a10
--- /dev/null
+++ b/modules/std/event.qs
@@ -0,0 +1,42 @@
+import debug for debug; 
+
+class event { 
+    func init() {
+        self._func = [];  // callback functions list
+    }
+    
+    func clear() {
+        self._func.clear();
+    }  
+    
+    func += (fn) {
+        if(typeof(fn) != "function") 
+            debug.assert("wrong type");
+        if(!self._func.contains(fn))
+            self._func.push(fn); 
+        else 
+            debug.logError("已经存在这个方法");
+    } 
+    
+    func -= (fn) { 
+        if(typeof(fn) != "function") 
+            debug.assert("wrong type");
+        self._func.remove(fn); 
+    } 
+    
+    func () (...){ 
+        foreach(var fn in self._func) {
+            fn(...);
+        } 
+    } 
+} 
+
+/*
+var Say = new event(); 
+Say += func(str) { 
+    io.print(str);
+} 
+Say("hi");
+Say.clear();
+
+*/
\ No newline at end of file
-- 
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