Adding an interface to allow adding custom views in FloatingHeaderView

Bug: 109828640
Change-Id: I9bde5d4fab47eb3e5787bbb741b5b9051a15c0c2

1 files changed, 58 insertions, 0 deletions

diff --git a/src/com/android/launcher3/allapps/FloatingHeaderRow.java b/src/com/android/launcher3/allapps/FloatingHeaderRow.java
new file mode 100644
index 000000000..922e4f1a3
--- /dev/null
+++ b/src/com/android/launcher3/allapps/FloatingHeaderRow.java
@@ -0,0 +1,58 @@
+/*
+ * 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.launcher3.allapps;
+
+import android.graphics.Rect;
+import android.view.animation.Interpolator;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.anim.PropertySetter;
+
+/**
+ * A abstract representation of a row in all-apps view
+ */
+public interface FloatingHeaderRow {
+
+    FloatingHeaderRow[] NO_ROWS = new FloatingHeaderRow[0];
+
+    void setup(FloatingHeaderView parent, FloatingHeaderRow[] allRows, boolean tabsHidden);
+
+    void setInsets(Rect insets, DeviceProfile grid);
+
+    int getExpectedHeight();
+
+    /**
+     * Returns true if the row should draw based on its current position and layout.
+     */
+    boolean shouldDraw();
+
+    /**
+     * Returns true if the view has anything worth drawing. This is different than
+     * {@link #shouldDraw()} as this is called earlier in the layout to determine the view
+     * position.
+     */
+    boolean hasVisibleContent();
+
+    void setContentVisibility(boolean hasHeaderExtra, boolean hasContent,
+            PropertySetter setter, Interpolator fadeInterpolator);
+
+    /**
+     * Scrolls the content vertically.
+     */
+    void setVerticalScroll(int scroll, boolean isScrolledOut);
+
+    Class<? extends FloatingHeaderRow> getTypeClass();
+}