feat(forms): migrated forms to typescript

modules/angular2/src/forms/validators.ts

@@ -0,0 +1,62 @@
+import {isBlank, isPresent} from 'angular2/src/facade/lang';
+import {List, ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
+
+import * as modelModule from './model';
+
+/**
+ * Provides a set of validators used by form controls.
+ *
+ * # Example
+ *
+ * ```
+ * var loginControl = new Control("", Validators.required)
+ * ```
+ *
+ * @exportedAs angular2/forms
+ */
+export class Validators {
+  static required(c: modelModule.Control): StringMap<string, boolean> {
+    return isBlank(c.value) || c.value == "" ? {"required": true} : null;
+  }
+
+  static nullValidator(c: any): StringMap<string, boolean> { return null; }
+
+  static compose(validators: List<Function>): Function {
+    return function(c: modelModule.Control) {
+      var res = ListWrapper.reduce(validators, (res, validator) => {
+        var errors = validator(c);
+        return isPresent(errors) ? StringMapWrapper.merge(res, errors) : res;
+      }, {});
+      return StringMapWrapper.isEmpty(res) ? null : res;
+    }
+  }
+
+  static group(c: modelModule.ControlGroup): StringMap<string, boolean> {
+    var res = {};
+    StringMapWrapper.forEach(c.controls, (control, name) => {
+      if (c.contains(name) && isPresent(control.errors)) {
+        Validators._mergeErrors(control, res);
+      }
+    });
+    return StringMapWrapper.isEmpty(res) ? null : res;
+  }
+
+  static array(c: modelModule.ControlArray): StringMap<string, boolean> {
+    var res = {};
+    ListWrapper.forEach(c.controls, (control) => {
+      if (isPresent(control.errors)) {
+        Validators._mergeErrors(control, res);
+      }
+    });
+    return StringMapWrapper.isEmpty(res) ? null : res;
+  }
+
+  static _mergeErrors(control: modelModule.AbstractControl, res: StringMap<string, any>): void {
+    StringMapWrapper.forEach(control.errors, (value, error) => {
+      if (!StringMapWrapper.contains(res, error)) {
+        res[error] = [];
+      }
+      ListWrapper.push(res[error], control);
+    });
+  }
+}