1 files changed, 51 insertions, 0 deletions
diff --git a/sdc-workflow-designer-ui/src/app/paletx/core/overlay/position/overlay-position-builder.ts b/sdc-workflow-designer-ui/src/app/paletx/core/overlay/position/overlay-position-builder.ts
new file mode 100644
index 00000000..0f6735eb
--- /dev/null
+++ b/sdc-workflow-designer-ui/src/app/paletx/core/overlay/position/overlay-position-builder.ts
@@ -0,0 +1,51 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+/* tslint:disable:array-type member-access variable-name typedef
+ only-arrow-functions directive-class-suffix component-class-suffix
+ component-selector no-unnecessary-type-assertion arrow-parens*/
+import {ElementRef, Injectable} from '@angular/core';
+
+import {OriginConnectionPosition, OverlayConnectionPosition} from './connected-position';
+import {ConnectedPositionStrategy} from './connected-position-strategy';
+import {FreePositionStrategy} from './free-position-strategy';
+import {GlobalPositionStrategy} from './global-position-strategy';
+import {ViewportRuler} from './viewport-ruler';
+
+
+/** Builder for overlay position strategy. */
+@Injectable()
+export class OverlayPositionBuilder {
+  constructor(private _viewportRuler: ViewportRuler) {}
+
+  /**
+   * Creates a free position strategy
+   */
+  free(): FreePositionStrategy {
+	return new FreePositionStrategy();
+  }
+
+  /**
+   * Creates a global position strategy.
+   */
+  global(): GlobalPositionStrategy {
+	return new GlobalPositionStrategy();
+  }
+
+  /**
+   * Creates a relative position strategy.
+   * @param elementRef
+   * @param originPos
+   * @param overlayPos
+   */
+  connectedTo(
+		elementRef: ElementRef, originPos: OriginConnectionPosition,
+		overlayPos: OverlayConnectionPosition): ConnectedPositionStrategy {
+	return new ConnectedPositionStrategy(
+		elementRef, originPos, overlayPos, this._viewportRuler);
+  }
+}