Toggle between primary and managed profile in Print Settings

This adds a spinner to the print settings screen which can be used to toggle
between the Settings app in the primary and managed profile so that the user
can edit settings belonging to both profiles.

Bug: 16369104
Change-Id: I2556a331d09379c2a501bc6b192ab1631b5215f5

src/com/android/settings/UserSpinnerAdapter.java

@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings;
+
+import android.content.Context;
+import android.content.pm.UserInfo;
+import android.database.DataSetObserver;
+import android.graphics.Bitmap;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.SpinnerAdapter;
+import android.widget.TextView;
+
+import com.android.settings.drawable.CircleFramedDrawable;
+
+import java.util.ArrayList;
+
+/**
+ * Adapter for a spinner that shows a list of users.
+ */
+public class UserSpinnerAdapter implements SpinnerAdapter {
+    // TODO: Update UI. See: http://b/16518801
+    /** Holder for user details */
+    public static class UserDetails {
+        private final UserHandle mUserHandle;
+        private final String name;
+        private final Drawable icon;
+
+        public UserDetails(UserHandle userHandle, UserManager um, Context context) {
+            mUserHandle = userHandle;
+            UserInfo userInfo = um.getUserInfo(mUserHandle.getIdentifier());
+            name = userInfo.name;
+            Bitmap bitmap = um.getUserIcon(userHandle.getIdentifier());
+            if (bitmap != null) {
+                icon = CircleFramedDrawable.getInstance(context, bitmap);
+            } else {
+                icon = null;
+            }
+        }
+    }
+    private ArrayList<UserDetails> data;
+    private final LayoutInflater mInflater;
+
+    public UserSpinnerAdapter(Context context, ArrayList<UserDetails> users) {
+        if (users == null) {
+            throw new IllegalArgumentException("A list of user details must be provided");
+        }
+        this.data = users;
+        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+    }
+
+    public UserHandle getUserHandle(int position) {
+        if (position < 0 || position >= data.size()) {
+            return null;
+        }
+        return data.get(position).mUserHandle;
+    }
+
+    @Override
+    public View getDropDownView(int position, View convertView, ViewGroup parent) {
+        final View row = convertView != null ? convertView : createUser(parent);
+
+        UserDetails user = data.get(position);
+        ((ImageView) row.findViewById(android.R.id.icon)).setImageDrawable(user.icon);
+        ((TextView) row.findViewById(android.R.id.title)).setText(user.name);
+        return row;
+    }
+
+    private View createUser(ViewGroup parent) {
+        return mInflater.inflate(R.layout.user_preference, parent, false);
+    }
+
+    @Override
+    public void registerDataSetObserver(DataSetObserver observer) {
+        // We don't support observers
+    }
+
+    @Override
+    public void unregisterDataSetObserver(DataSetObserver observer) {
+        // We don't support observers
+    }
+
+    @Override
+    public int getCount() {
+        return data.size();
+    }
+
+    @Override
+    public UserDetails getItem(int position) {
+        return data.get(position);
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return data.get(position).mUserHandle.getIdentifier();
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return false;
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        return getDropDownView(position, convertView, parent);
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return 0;
+    }
+
+    @Override
+    public int getViewTypeCount() {
+        return 1;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return data.isEmpty();
+    }
+}