Creates reusable button for usage in Smart Lock infobars.

chrome/android/java/src/org/chromium/chrome/browser/infobar/OverflowSelector.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/OverflowSelector.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/OverflowSelector.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/OverflowSelector.java
new file mode 100644
index 0000000000000000000000000000000000000000..b41d00581335246f7eb6a36d60575804bb8b8628
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/OverflowSelector.java
@@ -0,0 +1,68 @@
+// 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.infobar;
+
+import android.content.Context;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.PopupMenu;
+import android.widget.PopupMenu.OnMenuItemClickListener;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.preferences.PreferencesLauncher;
+import org.chromium.chrome.browser.widget.ButtonCompat;
+
+/**
+ * Button with text "More", which opens a popup with two elements: "Learn more" link to help center
+ * and link named "Settings" which opens general settings page. This element is used by Smart Lock
+ * infobars.
+ */
+public class OverflowSelector {
+    private OverflowSelector() {}
+
+    /**
+     * Creates a material style borderless button with text "More" which opens a popup menu,
+     * which allows to go to help center article or Settings.
+     */
+    public static Button createOverflowSelector(Context context) {
+        Button b = ButtonCompat.createBorderlessButton(context);
+        b.setText(context.getString(R.string.more));
+        b.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                OverflowSelector.showMorePopup(view);
+            }
+        });
+        return b;
+    }
+
+    /** Pops up menu with two items: "Settings" and "Learn more" when user clicks "More" button. */
+    private static void showMorePopup(View v) {
+        final Context context = v.getContext();
+        PopupMenu popup = new PopupMenu(context, v);
+        popup.setOnMenuItemClickListener(new OnMenuItemClickListener() {
+            @Override
+            public boolean onMenuItemClick(MenuItem item) {
+                return OverflowSelector.processMenuItem(item, context);
+            }
+        });
+        popup.inflate(R.menu.overflow_selector_for_smart_lock_infobars);
+        popup.show();
+    }
+
+    private static boolean processMenuItem(MenuItem item, Context context) {
+        if (item.getItemId() == R.id.settings) {
+            // TODO(melandory) When Smart Lock setting will be implemented for Chrome on Android
+            // this code should open settings fragment with Smart Lock parameters.
+            PreferencesLauncher.launchSettingsPage(context, null);
+            return true;
+        }
+        // TODO(melandory): Learn more should open link to help center
+        // article which is not ready yet.
+        return false;
+    }
+}