Merge pull request #2 from seriussoft/seriussoft-patch-1

Create switchcontext.ts ...

Author: seriussoft

classes/switchcontext.ts

@@ -0,0 +1,27 @@
+class SwitchContext {
+    private Cases: { Match: any, Handler: () => void, IsDefault?: boolean }[] = [];
+
+    addCase(match: any, handler: () => void): void {
+        this.Cases.push({ Match: match, Handler: handler });
+    }
+
+    addDefault(handler: () => void): void {
+        this.Cases.push({ Match: null, Handler: handler, IsDefault: true });
+    }
+
+    execute(value: any): void {
+        let matched = false;
+        for (let cb of this.Cases) {
+            if (cb.Match === value || cb.Match == value) {
+                cb.Handler();
+                matched = true;
+                break;
+            }
+        }
+        if (!matched) {
+            let defaultCase = this.Cases.find(cb => cb.IsDefault);
+            if (defaultCase) defaultCase.Handler();
+        }
+        this.Cases = []; // clear after execution
+    }
+}