1 files changed, 64 insertions, 0 deletions
diff --git a/java/com/android/dialer/widget/MaxHeightScrollView.java b/java/com/android/dialer/widget/MaxHeightScrollView.java
new file mode 100644
index 000000000..cec8f8f35
--- /dev/null
+++ b/java/com/android/dialer/widget/MaxHeightScrollView.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2018 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.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.support.annotation.Nullable;
+import android.util.AttributeSet;
+import android.widget.ScrollView;
+
+/** {@link ScrollView} with a max height attribute. */
+public class MaxHeightScrollView extends ScrollView {
+
+  private final int maxHeight;
+
+  public MaxHeightScrollView(Context context, @Nullable AttributeSet attrs) {
+    this(context, attrs, 0);
+  }
+
+  public MaxHeightScrollView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+    this(context, attrs, defStyleAttr, 0);
+  }
+
+  public MaxHeightScrollView(
+      Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+    super(context, attrs, defStyleAttr, defStyleRes);
+    if (isInEditMode()) {
+      maxHeight = -1;
+      return;
+    }
+
+    TypedArray array =
+        context.getTheme().obtainStyledAttributes(attrs, R.styleable.MaxHeightScrollView, 0, 0);
+    try {
+      maxHeight = array.getDimensionPixelSize(R.styleable.MaxHeightScrollView_maxHeight, -1);
+    } finally {
+      array.recycle();
+    }
+  }
+
+  @Override
+  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+    if (maxHeight < 0) {
+      super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    } else {
+      super.onMeasure(
+          widthMeasureSpec, MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST));
+    }
+  }
+}