1 files changed, 55 insertions, 0 deletions
diff --git a/mobile/android/base/java/org/mozilla/gecko/tabs/TabPanelBackButton.java b/mobile/android/base/java/org/mozilla/gecko/tabs/TabPanelBackButton.java
new file mode 100644
index 000000000..7ea02407e
--- /dev/null
+++ b/mobile/android/base/java/org/mozilla/gecko/tabs/TabPanelBackButton.java
@@ -0,0 +1,55 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.tabs;
+
+import org.mozilla.gecko.R;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.ViewGroup;
+import android.widget.ImageButton;
+
+public class TabPanelBackButton extends ImageButton {
+
+    private int dividerWidth = 0;
+
+    private final Drawable divider;
+    private final int dividerPadding;
+
+    public TabPanelBackButton(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TabPanelBackButton);
+        divider = a.getDrawable(R.styleable.TabPanelBackButton_rightDivider);
+        dividerPadding = (int) a.getDimension(R.styleable.TabPanelBackButton_dividerVerticalPadding, 0);
+        a.recycle();
+
+        if (divider != null) {
+            dividerWidth = divider.getIntrinsicWidth();
+        }
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        setMeasuredDimension(getMeasuredWidth() + dividerWidth, getMeasuredHeight());
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+        if (divider != null) {
+            final ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) getLayoutParams();
+            final int left = getRight() - lp.rightMargin - dividerWidth;
+
+            divider.setBounds(left, getPaddingTop() + dividerPadding,
+                    left + dividerWidth, getHeight() - getPaddingBottom() - dividerPadding);
+            divider.draw(canvas);
+        }
+    }
+}