Include paletx core

Include paletx core to WF Designer UI.

Issue-ID: SDC-1130,SDC-1131

Change-Id: I9a2591e022b5ff118cccbbc839796be19d70df84
Signed-off-by: YuanHu <yuan.hu1@zte.com.cn>

1 files changed, 17 insertions, 0 deletions

diff --git a/sdc-workflow-designer-ui/src/app/paletx/core/overlay/position/position-strategy.ts b/sdc-workflow-designer-ui/src/app/paletx/core/overlay/position/position-strategy.ts
new file mode 100644
index 00000000..21bd0fa0
--- /dev/null
+++ b/sdc-workflow-designer-ui/src/app/paletx/core/overlay/position/position-strategy.ts
@@ -0,0 +1,17 @@
+/**
+ * @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
+ */
+
+/** Strategy for setting the position on an overlay. */
+export interface PositionStrategy {
+  /** Updates the position of the overlay element. */
+  apply(element: Element): void;
+
+  /** Cleans up any DOM modifications made by the position strategy, if
+   * necessary. */
+  dispose(): void;
+}