Merge "Removing all compatibility code below Lollipop" into ub-launcher3-master

2 files changed, 37 insertions, 91 deletions

diff --git a/src/com/android/launcher3/allapps/AllAppsContainerView.java b/src/com/android/launcher3/allapps/AllAppsContainerView.java
index 97e0d984a..a2266fef1 100644
--- a/src/com/android/launcher3/allapps/AllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/AllAppsContainerView.java
@@ -261,9 +261,7 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc
                 0, 1, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
         mSearchInput.setHint(spanned);
 
-        mElevationController = Utilities.ATLEAST_LOLLIPOP
-                ? new HeaderElevationController.ControllerVL(mSearchContainer)
-                : new HeaderElevationController.ControllerV16(mSearchContainer);
+        mElevationController = new HeaderElevationController(mSearchContainer);
 
         // Load the all apps recycler view
         mAppsRecyclerView = (AllAppsRecyclerView) findViewById(R.id.apps_list_view);
diff --git a/src/com/android/launcher3/allapps/HeaderElevationController.java b/src/com/android/launcher3/allapps/HeaderElevationController.java
index e79e5c762..b167fed33 100644
--- a/src/com/android/launcher3/allapps/HeaderElevationController.java
+++ b/src/com/android/launcher3/allapps/HeaderElevationController.java
@@ -1,16 +1,10 @@
 package com.android.launcher3.allapps;
 
-import android.annotation.TargetApi;
 import android.content.res.Resources;
 import android.graphics.Outline;
-import android.graphics.Rect;
-import android.graphics.drawable.GradientDrawable;
-import android.os.Build;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
-import android.view.ViewGroup;
 import android.view.ViewOutlineProvider;
-import android.widget.FrameLayout;
 
 import com.android.launcher3.BaseRecyclerView;
 import com.android.launcher3.R;
@@ -19,10 +13,40 @@ import com.android.launcher3.Utilities;
 /**
  * Helper class for controlling the header elevation in response to RecyclerView scroll.
  */
-public abstract class HeaderElevationController extends RecyclerView.OnScrollListener {
+public class HeaderElevationController extends RecyclerView.OnScrollListener {
+
+    private final View mHeader;
+    private final float mMaxElevation;
+    private final float mScrollToElevation;
 
     private int mCurrentY = 0;
 
+    public HeaderElevationController(View header) {
+        mHeader = header;
+        final Resources res = mHeader.getContext().getResources();
+        mMaxElevation = res.getDimension(R.dimen.all_apps_header_max_elevation);
+        mScrollToElevation = res.getDimension(R.dimen.all_apps_header_scroll_to_elevation);
+
+        // We need to provide a custom outline so the shadow only appears on the bottom edge.
+        // The top, left and right edges are all extended out, and the shadow is clipped
+        // by the parent.
+        final ViewOutlineProvider vop = new ViewOutlineProvider() {
+            @Override
+            public void getOutline(View view, Outline outline) {
+                final View parent = (View) mHeader.getParent();
+
+                final int left = parent.getLeft(); // Use the parent to account for offsets
+                final int top = view.getTop();
+                final int right = left + view.getWidth();
+                final int bottom = view.getBottom();
+
+                final int offset = Utilities.pxFromDp(mMaxElevation, res.getDisplayMetrics());
+                outline.setRect(left - offset, top - offset, right + offset, bottom);
+            }
+        };
+        mHeader.setOutlineProvider(vop);
+    }
+
     public void reset() {
         mCurrentY = 0;
         onScroll(mCurrentY);
@@ -34,88 +58,12 @@ public abstract class HeaderElevationController extends RecyclerView.OnScrollLis
         onScroll(mCurrentY);
     }
 
-    public void updateBackgroundPadding(Rect bgPadding) { }
-
-    abstract void onScroll(int scrollY);
-
-    public static class ControllerV16 extends HeaderElevationController {
-
-        private final View mShadow;
-        private final float mScrollToElevation;
-
-        public ControllerV16(View header) {
-            Resources res = header.getContext().getResources();
-            mScrollToElevation = res.getDimension(R.dimen.all_apps_header_scroll_to_elevation);
-
-            mShadow = new View(header.getContext());
-            mShadow.setBackground(new GradientDrawable(
-                    GradientDrawable.Orientation.TOP_BOTTOM, new int[] {0x1E000000, 0x00000000}));
-            mShadow.setAlpha(0);
-
-            FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
-                    FrameLayout.LayoutParams.MATCH_PARENT,
-                    res.getDimensionPixelSize(R.dimen.all_apps_header_shadow_height));
-            lp.topMargin = ((FrameLayout.LayoutParams) header.getLayoutParams()).height;
-
-            ((ViewGroup) header.getParent()).addView(mShadow, lp);
-        }
-
-        @Override
-        public void onScroll(int scrollY) {
-            float elevationPct = (float) Math.min(scrollY, mScrollToElevation) /
-                    mScrollToElevation;
-            mShadow.setAlpha(elevationPct);
-        }
-
-        @Override
-        public void updateBackgroundPadding(Rect bgPadding) {
-            FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mShadow.getLayoutParams();
-            lp.leftMargin = bgPadding.left;
-            lp.rightMargin = bgPadding.right;
-            mShadow.requestLayout();
+    private void onScroll(int scrollY) {
+        float elevationPct = Math.min(scrollY, mScrollToElevation) / mScrollToElevation;
+        float newElevation = mMaxElevation * elevationPct;
+        if (Float.compare(mHeader.getElevation(), newElevation) != 0) {
+            mHeader.setElevation(newElevation);
         }
     }
 
-    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-    public static class ControllerVL extends HeaderElevationController {
-
-        private final View mHeader;
-        private final float mMaxElevation;
-        private final float mScrollToElevation;
-
-        public ControllerVL(View header) {
-            mHeader = header;
-            final Resources res = mHeader.getContext().getResources();
-            mMaxElevation = res.getDimension(R.dimen.all_apps_header_max_elevation);
-            mScrollToElevation = res.getDimension(R.dimen.all_apps_header_scroll_to_elevation);
-
-            // We need to provide a custom outline so the shadow only appears on the bottom edge.
-            // The top, left and right edges are all extended out, and the shadow is clipped
-            // by the parent.
-            final ViewOutlineProvider vop = new ViewOutlineProvider() {
-                @Override
-                public void getOutline(View view, Outline outline) {
-                    final View parent = (View) mHeader.getParent();
-
-                    final int left = parent.getLeft(); // Use the parent to account for offsets
-                    final int top = view.getTop();
-                    final int right = left + view.getWidth();
-                    final int bottom = view.getBottom();
-
-                    final int offset = Utilities.pxFromDp(mMaxElevation, res.getDisplayMetrics());
-                    outline.setRect(left - offset, top - offset, right + offset, bottom);
-                }
-            };
-            mHeader.setOutlineProvider(vop);
-        }
-
-        @Override
-        public void onScroll(int scrollY) {
-            float elevationPct = Math.min(scrollY, mScrollToElevation) / mScrollToElevation;
-            float newElevation = mMaxElevation * elevationPct;
-            if (Float.compare(mHeader.getElevation(), newElevation) != 0) {
-                mHeader.setElevation(newElevation);
-            }
-        }
-    }
 }