[add] slot1

src/CatanEngine/CSharp/System/Action.ts

@@ -0,0 +1,125 @@
+/**
+ * 回呼函數: fnname (arg: TArg): void
+ */
+interface ActionCallback<TArg> {
+    (arg: TArg): void;
+}
+
+interface Struct<TArg> {
+    callback: ActionCallback<TArg>;
+    target: any;
+    once?: boolean;
+}
+
+export class Action<TArg> {
+    private _queue: Struct<TArg>[] = [];
+
+    /**
+     * 監聽事件
+     * @param callback 回呼函數: fnname (arg: TArg): void
+     * @param bindTarget 回呼時this綁定的對象
+     */
+    AddCallback(callback: ActionCallback<TArg>, bindTarget?: any) {
+        let q = <Struct<TArg>> {
+            callback: callback,
+            target: bindTarget
+        };
+        this._queue.push(q);
+    }
+
+    /**
+     * 監聽事件 (一次性)
+     * @param callback 回呼函數: fnname (arg: TArg): void
+     * @param bindTarget 回呼時this綁定的對象
+     */
+    AddCallbackOnce(callback: ActionCallback<TArg>, bindTarget?: any) {
+        let q = <Struct<TArg>> {
+            callback: callback,
+            target: bindTarget,
+            once: true
+        };
+        this._queue.push(q);
+    }
+
+    /**
+     * 移除事件
+     * @param callback 
+     */
+    RemoveByCallback(callback: ActionCallback<TArg>) {
+        let index = this._queue.length;
+        if (index > 0) {
+            while (index--) {
+                let q = this._queue[index];
+                if (!q.callback || q.callback === callback) {
+                    q.callback = undefined;
+                    this._queue.splice(index, 1);
+                }
+            }
+        }
+    }
+    
+    /**
+     * 移除事件
+     * @param bindTarget 回呼時this綁定的對象
+     */
+    RemoveByBindTarget(bindTarget: any) {
+        let index = this._queue.length;
+        if (index > 0) {
+            while (index--) {
+                let q = this._queue[index];
+                if (!q.callback || q.target === bindTarget) {
+                    q.callback = undefined;
+                    this._queue.splice(index, 1);
+                }
+            }
+        }
+    }
+
+    /**
+     * 移除全部事件
+     */
+    RemoveAllCallbacks() {
+        this._queue.forEach(q => q.callback = undefined);
+        this._queue.length = 0;
+    }
+
+    /**
+     * 發送事件
+     * @param arg 參數
+     */
+    DispatchCallback(arg: TArg) {
+        let index = this._queue.length;
+        if (index > 0) {
+            let cleanRemoved = false;
+            this._queue.slice().forEach(q => {
+                if (!q.callback) {
+                    cleanRemoved = true;
+                    return;
+                }
+
+                if (q.target) {
+                    q.callback.call(q.target, arg);
+                } else {
+                    q.callback(arg);
+                }
+
+                if (q.once) {
+                    q.callback = undefined;
+                    cleanRemoved = true;
+                }
+            });
+
+            if (cleanRemoved) {
+                index = this._queue.length;
+                if (index > 0) {
+                    while (index--) {
+                        let q = this._queue[index];
+                        if (!q.callback) {
+                            this._queue.splice(index, 1);
+                        }
+                    }
+                }
+            }
+        }
+    }
+}