Implement real QS user switcher

Replaces the stop-gap user switcher with the real deal.
Dimensions may need some further adjustments.

Bug: 15545213
Change-Id: I4399635c03553dac935049d5b8297fe5f5c1dc9a
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailView.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailView.java
new file mode 100644
index 0000000..ec5f28c
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailView.java
@@ -0,0 +1,101 @@
+/*
+ * 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.systemui.qs.tiles;
+
+import com.android.systemui.R;
+import com.android.systemui.statusbar.policy.UserSwitcherController;
+
+import android.content.Context;
+import android.content.Intent;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.GridView;
+
+/**
+ * Quick settings detail view for user switching.
+ */
+public class UserDetailView extends GridView {
+
+    public UserDetailView(Context context) {
+        this(context, null);
+    }
+
+    public UserDetailView(Context context, AttributeSet attrs) {
+        this(context, attrs, android.R.attr.gridViewStyle);
+    }
+
+    public UserDetailView(Context context, AttributeSet attrs, int defStyleAttr) {
+        this(context, attrs, defStyleAttr, 0);
+    }
+
+    public UserDetailView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+
+        setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                UserSwitcherController.UserRecord tag =
+                        (UserSwitcherController.UserRecord) view.getTag();
+                ((Adapter)getAdapter()).switchTo(tag);
+            }
+        });
+    }
+
+    public static UserDetailView inflate(Context context, ViewGroup parent, boolean attach) {
+        return (UserDetailView) LayoutInflater.from(context).inflate(
+                R.layout.qs_user_detail, parent, attach);
+    }
+
+    public void createAndSetAdapter(UserSwitcherController controller) {
+        setAdapter(new Adapter(mContext, controller));
+    }
+
+    public static class Adapter extends UserSwitcherController.BaseUserAdapter {
+
+        private Context mContext;
+
+        public Adapter(Context context, UserSwitcherController controller) {
+            super(controller);
+            mContext = context;
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            UserSwitcherController.UserRecord item = getItem(position);
+            UserDetailItemView v = UserDetailItemView.convertOrInflate(
+                    mContext, convertView, parent);
+            String name;
+            if (item.isGuest) {
+                name = mContext.getString(
+                        item.info == null ? R.string.guest_new_guest : R.string.guest_nickname);
+            } else {
+                name = item.info.name;
+            }
+            if (item.picture == null) {
+                v.bind(name, mContext.getDrawable(R.drawable.ic_account_circle));
+            } else {
+                v.bind(name, item.picture);
+            }
+            v.setActivated(item.isCurrent);
+            v.setTag(item);
+            return v;
+        }
+    }
+}