Added VR libraries

Assets/GoogleVR/Scripts/UI/GvrDropdown.cs

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+// Copyright 2017 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.EventSystems;
+using System.Collections;
+
+/// Dropdown UI component that works with the GvrRaycasters.
+/// This is a workaround for the fact that the Dropdown component doesn't work with custom raycasters
+/// because it internally adds two GraphicRaycasters.
+[HelpURL("https://developers.google.com/vr/unity/reference/class/GvrDropdown")]
+public class GvrDropdown : Dropdown {
+  private GameObject currentBlocker;
+
+  public override void OnPointerClick(PointerEventData eventData) {
+    base.OnPointerClick(eventData);
+    FixTemplateAndBlockerRaycasters();
+  }
+
+  public override void OnSubmit(BaseEventData eventData) {
+    base.OnSubmit(eventData);
+    FixTemplateAndBlockerRaycasters();
+  }
+
+  private void FixTemplateAndBlockerRaycasters() {
+    if (template != null) {
+      FixRaycaster(template.gameObject, false);
+    }
+    FixRaycaster(currentBlocker, true);
+  }
+
+  protected override GameObject CreateBlocker(Canvas rootCanvas) {
+    currentBlocker = base.CreateBlocker(rootCanvas);
+    return currentBlocker;
+  }
+
+  protected override GameObject CreateDropdownList(GameObject template) {
+    GameObject dropdown = base.CreateDropdownList(template);
+    FixRaycaster(dropdown, false);
+    return dropdown;
+  }
+
+  private void FixRaycaster(GameObject go, bool shouldCopyProperties) {
+    if (go == null) {
+      return;
+    }
+
+    GraphicRaycaster oldRaycaster = go.GetComponent<GraphicRaycaster>();
+    Destroy(oldRaycaster);
+
+    bool addedRaycaster;
+    GvrPointerGraphicRaycaster raycaster;
+    raycaster = GetOrAddComponent<GvrPointerGraphicRaycaster>(go, out addedRaycaster);
+
+    if (shouldCopyProperties) {
+      GvrPointerGraphicRaycaster templateRaycaster = GetTemplateRaycaster();
+      if (addedRaycaster && templateRaycaster != null) {
+        CopyRaycasterProperties(templateRaycaster, raycaster);
+      }
+    }
+  }
+
+  private GvrPointerGraphicRaycaster GetTemplateRaycaster() {
+    if (template == null) {
+      return null;
+    }
+
+    return template.GetComponent<GvrPointerGraphicRaycaster>();
+  }
+
+  private void CopyRaycasterProperties(GvrPointerGraphicRaycaster source, GvrPointerGraphicRaycaster dest) {
+    if (source == null || dest == null) {
+      return;
+    }
+
+    dest.blockingMask = source.blockingMask;
+    dest.blockingObjects = source.blockingObjects;
+    dest.ignoreReversedGraphics = source.ignoreReversedGraphics;
+  }
+
+  private static T GetOrAddComponent<T>(GameObject go, out bool addedComponent) where T : Component {
+    T comp = go.GetComponent<T>();
+    addedComponent = false;
+    if (!comp) {
+      comp = go.AddComponent<T>();
+      addedComponent = true;
+    }
+    return comp;
+  }
+}

Assets/GoogleVR/Scripts/UI/GvrDropdown.cs.meta

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+timeCreated: 1484681912
+licenseType: Pro
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