Pull request #1410: KERNEL-4583 refactor: 添加mixins定义

Merge in VISUAL/fineui from ~KIRA/fineui:master to master

* commit '61967da6bb24709fb517e9613f4221146c661e43':
  refactor: 加上注释
  KERNEL-4583 refactor: 添加mixins定义

typescript/core/decorator/decorator.ts

@@ -44,6 +44,47 @@ export function store<T>(Model: Constructor<T> & {xtype: string}, opts: { props?
     };
 }
 
+/**
+ * 注册mixin
+ * ie8下不能使用
+ */
+export function mixin<T>() {
+    return function decorator(Target: Constructor<T> & { xtype: string }): void {
+        const mixin: {
+            [key: string]: Function;
+        } = {};
+
+        Object.getOwnPropertyNames(Target.prototype).forEach(name => {
+            if (name === 'constructor') {
+                return;
+            }
+
+            mixin[name] = Target.prototype[name];
+        });
+
+        Fix.mixin(Target.xtype, mixin);
+    };
+}
+
+/**
+ * 类注册mixins属性
+ * ie8下不能使用
+ * @param Mixins
+ */
+export function mixins(...Mixins: ({ new (...args: any[]): {} } & { xtype: string })[]) {
+    return function classDecorator<U extends { new (...args: any[]): {} }>(constructor: U) {
+        const mixins: string[] = [];
+
+        Mixins.forEach(mixin => {
+            mixin.xtype && mixins.push(mixin.xtype);
+        });
+
+        return class extends constructor {
+            mixins = mixins;
+        };
+    };
+}
+
 /**
  * Model基类
  */