Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkItemHighlightView.java

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.enhancedbookmarks;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.LayerDrawable;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.Checkable;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.base.ApiCompatibilityUtils;
+
+/**
+ * Highlight overlay view for items on the main grid.
+ */
+public class EnhancedBookmarkItemHighlightView extends View implements Checkable {
+    public static final int ANIMATION_DURATION_MS = 150;
+    private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked};
+    private boolean mIsChecked;
+
+    /**
+     * Constructor for inflating from XML.
+     */
+    public EnhancedBookmarkItemHighlightView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        Drawable clickDrawable = context.obtainStyledAttributes(new int[] {
+                android.R.attr.selectableItemBackground }).getDrawable(0);
+        Drawable longClickDrawable = ApiCompatibilityUtils.getDrawable(context.getResources(),
+                R.drawable.eb_item_highlight);
+        LayerDrawable ld = new LayerDrawable(new Drawable[] {clickDrawable, longClickDrawable});
+        setBackground(ld);
+    }
+
+    @Override
+    public boolean isChecked() {
+        return mIsChecked;
+    }
+
+    @Override
+    public void toggle() {
+        setChecked(!mIsChecked);
+    }
+
+    @Override
+    public void setChecked(boolean checked) {
+        if (checked == mIsChecked) return;
+        mIsChecked = checked;
+        refreshDrawableState();
+    }
+
+    @Override
+    public int[] onCreateDrawableState(int extraSpace) {
+        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
+        if (mIsChecked) {
+            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
+        }
+        return drawableState;
+    }
+}