1 files changed, 100 insertions, 0 deletions
diff --git a/java/com/android/dialer/simulator/impl/SimulatorSubMenu.java b/java/com/android/dialer/simulator/impl/SimulatorSubMenu.java
new file mode 100644
index 000000000..64a2e7265
--- /dev/null
+++ b/java/com/android/dialer/simulator/impl/SimulatorSubMenu.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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
+ */
+
+package com.android.dialer.simulator.impl;
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.ActionProvider;
+import android.view.MenuItem;
+import android.view.SubMenu;
+import android.view.View;
+import com.android.dialer.common.Assert;
+import java.util.ArrayList;
+import java.util.List;
+
+/** Makes it easier to create submenus in the simulator. */
+final class SimulatorSubMenu extends ActionProvider {
+  List<Item> items = new ArrayList<>();
+
+  SimulatorSubMenu(@NonNull Context context) {
+    super(Assert.isNotNull(context));
+  }
+
+  SimulatorSubMenu addItem(@NonNull String title, @NonNull Runnable clickHandler) {
+    items.add(new Item(title, clickHandler));
+    return this;
+  }
+
+  SimulatorSubMenu addItem(@NonNull String title, @NonNull ActionProvider actionProvider) {
+    items.add(new Item(title, actionProvider));
+    return this;
+  }
+
+  @Override
+  public View onCreateActionView() {
+    return null;
+  }
+
+  @Override
+  public View onCreateActionView(MenuItem forItem) {
+    return null;
+  }
+
+  @Override
+  public boolean hasSubMenu() {
+    return true;
+  }
+
+  @Override
+  public void onPrepareSubMenu(SubMenu subMenu) {
+    super.onPrepareSubMenu(subMenu);
+    subMenu.clear();
+
+    for (Item item : items) {
+      if (item.clickHandler != null) {
+        subMenu
+            .add(item.title)
+            .setOnMenuItemClickListener(
+                (i) -> {
+                  item.clickHandler.run();
+                  return true;
+                });
+      } else {
+        subMenu.add(item.title).setActionProvider(item.actionProvider);
+      }
+    }
+  }
+
+  private static final class Item {
+    @NonNull final String title;
+    @Nullable final Runnable clickHandler;
+    @Nullable final ActionProvider actionProvider;
+
+    Item(@NonNull String title, @NonNull Runnable clickHandler) {
+      this.title = Assert.isNotNull(title);
+      this.clickHandler = Assert.isNotNull(clickHandler);
+      actionProvider = null;
+    }
+
+    Item(@NonNull String title, @NonNull ActionProvider actionProvider) {
+      this.title = Assert.isNotNull(title);
+      this.clickHandler = null;
+      this.actionProvider = Assert.isNotNull(actionProvider);
+    }
+  }
+}