Move copy of GroupingListAdapter to Dialer app.

+ Copied in from com.android.common.widget. This component is pretty
specific to phone number / call log grouping anyways.
+ Changed CallLogAdapter to reference this GroupingListAdapter
instead of the one in the framework library.
+ Changed  CallLogGroupBuilder to reference this adapter too.
+ Copy in tests too.

Next step: change GroupingListAdapter to extend RecyclerView.Adapter.
This will preserve existing grouping logic, despite switching to the
new view.

Bug: 19372817
Change-Id: Ic0186ca5fad06a3ae398b9d8f8006210077149dc

1 files changed, 311 insertions, 0 deletions

diff --git a/tests/src/com/android/dialer/calllog/GroupingListAdapterTests.java b/tests/src/com/android/dialer/calllog/GroupingListAdapterTests.java
new file mode 100644
index 000000000..3eb5f06b1
--- /dev/null
+++ b/tests/src/com/android/dialer/calllog/GroupingListAdapterTests.java
@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) 2015 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.calllog;
+
+import static com.android.dialer.calllog.GroupingListAdapter.ITEM_TYPE_GROUP_HEADER;
+import static com.android.dialer.calllog.GroupingListAdapter.ITEM_TYPE_IN_GROUP;
+import static com.android.dialer.calllog.GroupingListAdapter.ITEM_TYPE_STANDALONE;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.test.AndroidTestCase;
+import android.text.TextUtils;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * Tests for {@link GroupingListAdapter}.
+ *
+ * Running all tests:
+ *
+ *   adb shell am instrument -e class com.android.dialer.calllog.GroupingListAdapterTests \
+ *     -w com.google.android.dialer.tests/android.test.InstrumentationTestRunner
+ */
+public class GroupingListAdapterTests extends AndroidTestCase {
+
+    static private final String[] PROJECTION = new String[] {
+        "_id",
+        "group",
+    };
+
+    private static final int GROUPING_COLUMN_INDEX = 1;
+
+    private MatrixCursor mCursor;
+    private long mNextId;
+
+    private GroupingListAdapter mAdapter = new GroupingListAdapter(null) {
+
+        @Override
+        protected void addGroups(Cursor cursor) {
+            int count = cursor.getCount();
+            int groupItemCount = 1;
+            cursor.moveToFirst();
+            String currentValue = cursor.getString(GROUPING_COLUMN_INDEX);
+            for (int i = 1; i < count; i++) {
+                cursor.moveToNext();
+                String value = cursor.getString(GROUPING_COLUMN_INDEX);
+                if (TextUtils.equals(value, currentValue)) {
+                    groupItemCount++;
+                } else {
+                    if (groupItemCount > 1) {
+                        addGroup(i - groupItemCount, groupItemCount, false);
+                    }
+
+                    groupItemCount = 1;
+                    currentValue = value;
+                }
+            }
+            if (groupItemCount > 1) {
+                addGroup(count - groupItemCount, groupItemCount, false);
+            }
+        }
+
+        @Override
+        protected void bindChildView(View view, Context context, Cursor cursor) {
+        }
+
+        @Override
+        protected void bindGroupView(View view, Context context, Cursor cursor, int groupSize,
+                boolean expanded) {
+        }
+
+        @Override
+        protected void bindStandAloneView(View view, Context context, Cursor cursor) {
+        }
+
+        @Override
+        protected View newChildView(Context context, ViewGroup parent) {
+            return null;
+        }
+
+        @Override
+        protected View newGroupView(Context context, ViewGroup parent) {
+            return null;
+        }
+
+        @Override
+        protected View newStandAloneView(Context context, ViewGroup parent) {
+            return null;
+        }
+    };
+
+    private void buildCursor(String... numbers) {
+        mCursor = new MatrixCursor(PROJECTION);
+        mNextId = 1;
+        for (String number : numbers) {
+            mCursor.addRow(new Object[]{mNextId, number});
+            mNextId++;
+        }
+    }
+
+    public void testGroupingWithoutGroups() {
+        buildCursor("1", "2", "3");
+        mAdapter.changeCursor(mCursor);
+
+        assertEquals(3, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 1);
+        assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 2);
+    }
+
+    public void testGroupingWithCollapsedGroupAtTheBeginning() {
+        buildCursor("1", "1", "2");
+        mAdapter.changeCursor(mCursor);
+
+        assertEquals(2, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_GROUP_HEADER, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 2);
+    }
+
+    public void testGroupingWithExpandedGroupAtTheBeginning() {
+        buildCursor("1", "1", "2");
+        mAdapter.changeCursor(mCursor);
+        mAdapter.toggleGroup(0);
+
+        assertEquals(4, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_GROUP_HEADER, true, 0);
+        assertPositionMetadata(1, ITEM_TYPE_IN_GROUP, false, 0);
+        assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
+        assertPositionMetadata(3, ITEM_TYPE_STANDALONE, false, 2);
+    }
+
+    public void testGroupingWithExpandCollapseCycleAtTheBeginning() {
+        buildCursor("1", "1", "2");
+        mAdapter.changeCursor(mCursor);
+        mAdapter.toggleGroup(0);
+        mAdapter.toggleGroup(0);
+
+        assertEquals(2, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_GROUP_HEADER, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 2);
+    }
+
+    public void testGroupingWithCollapsedGroupInTheMiddle() {
+        buildCursor("1", "2", "2", "2", "3");
+        mAdapter.changeCursor(mCursor);
+
+        assertEquals(3, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
+        assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 4);
+    }
+
+    public void testGroupingWithExpandedGroupInTheMiddle() {
+        buildCursor("1", "2", "2", "2", "3");
+        mAdapter.changeCursor(mCursor);
+        mAdapter.toggleGroup(1);
+
+        assertEquals(6, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
+        assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
+        assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
+        assertPositionMetadata(4, ITEM_TYPE_IN_GROUP, false, 3);
+        assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 4);
+    }
+
+    public void testGroupingWithCollapsedGroupAtTheEnd() {
+        buildCursor("1", "2", "3", "3", "3");
+        mAdapter.changeCursor(mCursor);
+
+        assertEquals(3, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 1);
+        assertPositionMetadata(2, ITEM_TYPE_GROUP_HEADER, false, 2);
+    }
+
+    public void testGroupingWithExpandedGroupAtTheEnd() {
+        buildCursor("1", "2", "3", "3", "3");
+        mAdapter.changeCursor(mCursor);
+        mAdapter.toggleGroup(2);
+
+        assertEquals(6, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_STANDALONE, false, 1);
+        assertPositionMetadata(2, ITEM_TYPE_GROUP_HEADER, true, 2);
+        assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
+        assertPositionMetadata(4, ITEM_TYPE_IN_GROUP, false, 3);
+        assertPositionMetadata(5, ITEM_TYPE_IN_GROUP, false, 4);
+    }
+
+    public void testGroupingWithMultipleCollapsedGroups() {
+        buildCursor("1", "2", "2", "3", "4", "4", "5", "5", "6");
+        mAdapter.changeCursor(mCursor);
+
+        assertEquals(6, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
+        assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 3);
+        assertPositionMetadata(3, ITEM_TYPE_GROUP_HEADER, false, 4);
+        assertPositionMetadata(4, ITEM_TYPE_GROUP_HEADER, false, 6);
+        assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 8);
+    }
+
+    public void testGroupingWithMultipleExpandedGroups() {
+        buildCursor("1", "2", "2", "3", "4", "4", "5", "5", "6");
+        mAdapter.changeCursor(mCursor);
+        mAdapter.toggleGroup(1);
+
+        // Note that expanding the group of 2's shifted the group of 5's down from the
+        // 4th to the 6th position
+        mAdapter.toggleGroup(6);
+
+        assertEquals(10, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
+        assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
+        assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
+        assertPositionMetadata(4, ITEM_TYPE_STANDALONE, false, 3);
+        assertPositionMetadata(5, ITEM_TYPE_GROUP_HEADER, false, 4);
+        assertPositionMetadata(6, ITEM_TYPE_GROUP_HEADER, true, 6);
+        assertPositionMetadata(7, ITEM_TYPE_IN_GROUP, false, 6);
+        assertPositionMetadata(8, ITEM_TYPE_IN_GROUP, false, 7);
+        assertPositionMetadata(9, ITEM_TYPE_STANDALONE, false, 8);
+    }
+
+    public void testPositionCache() {
+        buildCursor("1", "2", "2", "3", "4", "4", "5", "5", "6");
+        mAdapter.changeCursor(mCursor);
+
+        // First pass - building up cache
+        assertEquals(6, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
+        assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 3);
+        assertPositionMetadata(3, ITEM_TYPE_GROUP_HEADER, false, 4);
+        assertPositionMetadata(4, ITEM_TYPE_GROUP_HEADER, false, 6);
+        assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 8);
+
+        // Second pass - using cache
+        assertEquals(6, mAdapter.getCount());
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, false, 1);
+        assertPositionMetadata(2, ITEM_TYPE_STANDALONE, false, 3);
+        assertPositionMetadata(3, ITEM_TYPE_GROUP_HEADER, false, 4);
+        assertPositionMetadata(4, ITEM_TYPE_GROUP_HEADER, false, 6);
+        assertPositionMetadata(5, ITEM_TYPE_STANDALONE, false, 8);
+
+        // Invalidate cache by expanding a group
+        mAdapter.toggleGroup(1);
+
+        // First pass - building up cache
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
+        assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
+        assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
+        assertPositionMetadata(4, ITEM_TYPE_STANDALONE, false, 3);
+        assertPositionMetadata(5, ITEM_TYPE_GROUP_HEADER, false, 4);
+        assertPositionMetadata(6, ITEM_TYPE_GROUP_HEADER, false, 6);
+        assertPositionMetadata(7, ITEM_TYPE_STANDALONE, false, 8);
+
+        // Second pass - using cache
+        assertPositionMetadata(0, ITEM_TYPE_STANDALONE, false, 0);
+        assertPositionMetadata(1, ITEM_TYPE_GROUP_HEADER, true, 1);
+        assertPositionMetadata(2, ITEM_TYPE_IN_GROUP, false, 1);
+        assertPositionMetadata(3, ITEM_TYPE_IN_GROUP, false, 2);
+        assertPositionMetadata(4, ITEM_TYPE_STANDALONE, false, 3);
+        assertPositionMetadata(5, ITEM_TYPE_GROUP_HEADER, false, 4);
+        assertPositionMetadata(6, ITEM_TYPE_GROUP_HEADER, false, 6);
+        assertPositionMetadata(7, ITEM_TYPE_STANDALONE, false, 8);
+    }
+
+    public void testGroupDescriptorArrayGrowth() {
+        String[] numbers = new String[500];
+        for (int i = 0; i < numbers.length; i++) {
+
+            // Make groups of 2
+            numbers[i] = String.valueOf((i / 2) * 2);
+        }
+
+        buildCursor(numbers);
+        mAdapter.changeCursor(mCursor);
+
+        assertEquals(250, mAdapter.getCount());
+    }
+
+    private void assertPositionMetadata(int position, int itemType, boolean isExpanded,
+            int cursorPosition) {
+        GroupingListAdapter.PositionMetadata metadata = new GroupingListAdapter.PositionMetadata();
+        mAdapter.obtainPositionMetadata(metadata, position);
+        assertEquals(itemType, metadata.itemType);
+        if (metadata.itemType == ITEM_TYPE_GROUP_HEADER) {
+            assertEquals(isExpanded, metadata.isExpanded);
+        }
+        assertEquals(cursorPosition, metadata.cursorPosition);
+    }
+}