1 files changed, 76 insertions, 0 deletions
diff --git a/mobile/android/base/java/org/mozilla/gecko/menu/MenuPopup.java b/mobile/android/base/java/org/mozilla/gecko/menu/MenuPopup.java
new file mode 100644
index 000000000..227cc7630
--- /dev/null
+++ b/mobile/android/base/java/org/mozilla/gecko/menu/MenuPopup.java
@@ -0,0 +1,76 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * 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.menu;
+
+import org.mozilla.gecko.AppConstants;
+import org.mozilla.gecko.R;
+
+import android.content.Context;
+import android.graphics.Color;
+import android.graphics.drawable.ColorDrawable;
+import android.support.v7.widget.CardView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.PopupWindow;
+
+/**
+ * A popup to show the inflated MenuPanel.
+ */
+public class MenuPopup extends PopupWindow {
+    private final CardView mPanel;
+
+    private final int mPopupWidth;
+
+    public MenuPopup(Context context) {
+        super(context);
+
+        setFocusable(true);
+
+        mPopupWidth = context.getResources().getDimensionPixelSize(R.dimen.menu_popup_width);
+
+        // Setting a null background makes the popup to not close on touching outside.
+        setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
+        setWindowLayoutMode(ViewGroup.LayoutParams.WRAP_CONTENT,
+                            ViewGroup.LayoutParams.WRAP_CONTENT);
+
+        LayoutInflater inflater = LayoutInflater.from(context);
+        mPanel = (CardView) inflater.inflate(R.layout.menu_popup, null);
+        setContentView(mPanel);
+
+        setAnimationStyle(R.style.PopupAnimation);
+    }
+
+    /**
+     * Adds the panel with the menu to its content.
+     *
+     * @param view The panel view with the menu to be shown.
+     */
+    public void setPanelView(View view) {
+        view.setLayoutParams(new FrameLayout.LayoutParams(mPopupWidth,
+                                                          FrameLayout.LayoutParams.WRAP_CONTENT));
+
+        mPanel.removeAllViews();
+        mPanel.addView(view);
+    }
+
+    /**
+     * A small little offset.
+     */
+    @Override
+    public void showAsDropDown(View anchor) {
+        // Set a height, so that the popup will not be displayed below the bottom of the screen.
+        // We use the exact height of the internal content, which is the technique described in
+        // http://stackoverflow.com/a/7698709
+        setHeight(mPanel.getHeight());
+
+        // Attempt to align the center of the popup with the center of the anchor. If the anchor is
+        // near the edge of the screen, the popup will just align with the edge of the screen.
+        final int xOffset = anchor.getWidth() / 2 - mPopupWidth / 2;
+        showAsDropDown(anchor, xOffset, -anchor.getHeight());
+    }
+}