Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/hosted/HostedAppMenuPropertiesDelegate.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.hosted;
+
+import android.view.Menu;
+import android.view.MenuItem;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.Tab;
+import org.chromium.chrome.browser.appmenu.ChromeAppMenuPropertiesDelegate;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * App menu properties delegate for {@link HostedActivity}.
+ */
+public class HostedAppMenuPropertiesDelegate extends ChromeAppMenuPropertiesDelegate {
+    private boolean mIsCustomEntryAdded;
+    private List<String> mMenuEntries;
+    private Map<MenuItem, Integer> mItemToIndexMap = new HashMap<MenuItem, Integer>();
+    /**
+     * Creates an {@link HostedAppMenuPropertiesDelegate} instance.
+     */
+    public HostedAppMenuPropertiesDelegate(ChromeActivity activity,
+            List<String> menuEntries) {
+        super(activity);
+        mMenuEntries = menuEntries;
+    }
+
+    @Override
+    public void prepareMenu(Menu menu) {
+        Tab currentTab = mActivity.getActivityTab();
+        if (currentTab != null) {
+            MenuItem forwardMenuItem = menu.findItem(R.id.forward_menu_id);
+            forwardMenuItem.setEnabled(currentTab.canGoForward());
+
+            mReloadMenuItem = menu.findItem(R.id.reload_menu_id);
+            mReloadMenuItem.setIcon(R.drawable.btn_reload_stop);
+            // Update the loading state of mReloadMenuItem.
+            if (currentTab.isLoading()) loadingStateChanged(true);
+
+            // Add custom menu items. Make sure they are only added once.
+            if (!mIsCustomEntryAdded) {
+                mIsCustomEntryAdded = true;
+                for (int i = 0; i < mMenuEntries.size(); i++) {
+                    MenuItem item = menu.add(0, 0, 1, mMenuEntries.get(i));
+                    mItemToIndexMap.put(item, i);
+                }
+            }
+        }
+    }
+
+    /**
+     * @return The index that the given menu item should appear in the result of
+     *         {@link HostedIntentDataProvider#getMenuTitles()}. Returns -1 if item not found.
+     */
+    public int getIndexOfMenuItem(MenuItem menuItem) {
+        if (!mItemToIndexMap.containsKey(menuItem)) {
+            return -1;
+        }
+        return mItemToIndexMap.get(menuItem).intValue();
+    }
+}