Initial search bar implementation.

Replaces the default Toolbar in SettingsActivity with one that looks
like a search bar. It uses a Toolbar inside a CardView with some custom
styling.

Since the search bar is a floating element, the new toolbar lives in the
content frame of the dashboard. A FrameLayout is used to provide the
layering that is desired.

Since the search bar is on top, an additional spacer view is added to
the list of items in the dashboard. Its color changes based on what
the first view is so that it always matches.

Adds android-support-v7-cardview as a dependency (and reorders the
other deps to be in alphabetical order).

Remaining work (in future CLs):
- remove search menu option?
- clean up initial window
- remove the line between the header and the first condition
       when there's a condition

Bug: 37477506
Test: make RunSettingsRoboTests
Change-Id: Id7477b90fbaf30eb5cac1ee244c847bddb95b3fd

tests/robotests/src/com/android/settings/dashboard/DashboardDataTest.java

@@ -112,7 +112,7 @@ public class DashboardDataTest {
     public void testBuildItemsData_containsAllData() {
         final DashboardData.SuggestionHeaderData data =
                 new DashboardData.SuggestionHeaderData(false, 1, 0);
-        final Object[] expectedObjects = {mTestCondition, null, data, mTestSuggestion,
+        final Object[] expectedObjects = {null, mTestCondition, null, data, mTestSuggestion,
                 mDashboardCategory, mTestCategoryTile};
         final int expectedSize = expectedObjects.length;
 
@@ -171,7 +171,7 @@ public class DashboardDataTest {
     @Test
     public void testDiffUtil_DataEqual_noResultData() {
         List<ListUpdateResult.ResultData> testResultData = new ArrayList<>();
-        testDiffUtil(mDashboardDataWithOneConditions, 
+        testDiffUtil(mDashboardDataWithOneConditions,
                 mDashboardDataWithOneConditions, testResultData);
     }
 
@@ -180,7 +180,7 @@ public class DashboardDataTest {
         //Build testResultData
         final List<ListUpdateResult.ResultData> testResultData = new ArrayList<>();
         testResultData.add(new ListUpdateResult.ResultData(
-                ListUpdateResult.ResultData.TYPE_OPERATION_INSERT, 1, 1));
+                ListUpdateResult.ResultData.TYPE_OPERATION_INSERT, 2, 1));
 
         testDiffUtil(mDashboardDataWithOneConditions,
                 mDashboardDataWithTwoConditions, testResultData);
@@ -191,7 +191,7 @@ public class DashboardDataTest {
         //Build testResultData
         final List<ListUpdateResult.ResultData> testResultData = new ArrayList<>();
         testResultData.add(new ListUpdateResult.ResultData(
-                ListUpdateResult.ResultData.TYPE_OPERATION_REMOVE, 0, 6));
+                ListUpdateResult.ResultData.TYPE_OPERATION_REMOVE, 1, 6));
 
         testDiffUtil(mDashboardDataWithOneConditions, mDashboardDataWithNoItems, testResultData);
     }
@@ -203,8 +203,8 @@ public class DashboardDataTest {
                 mDashboardDataWithOneConditions.getItemList(),
                 mDashboardDataWithOneConditions.getItemList());
 
-        // Item in position 0 is condition card, which payload should not be null
-        assertThat(callback.getChangePayload(0, 0)).isNotEqualTo(null);
+        // Item in position 1 is condition card, which payload should not be null
+        assertThat(callback.getChangePayload(1, 1)).isNotNull();
     }
 
     @Test
@@ -214,9 +214,9 @@ public class DashboardDataTest {
                 mDashboardDataWithOneConditions.getItemList(),
                 mDashboardDataWithOneConditions.getItemList());
 
-        // Only item in position 0 is condition card, so others' payload should be null
-        for (int i = 1; i < mDashboardDataWithOneConditions.getItemList().size(); i++) {
-            assertThat(callback.getChangePayload(i, i)).isEqualTo(null);
+        // Position 0 is spacer, 1 is condition card, so others' payload should be null
+        for (int i = 2; i < mDashboardDataWithOneConditions.getItemList().size(); i++) {
+            assertThat(callback.getChangePayload(i, i)).isNull();
         }
 
     }
@@ -356,6 +356,11 @@ public class DashboardDataTest {
 
                 return arg2 - resultData.arg2;
             }
+
+            @Override
+            public String toString() {
+                return "op:" + operation + ",arg1:" + arg1 + ",arg2:" + arg2;
+            }
         }
     }
 }