Iintial stab at multi-user switcher on Keyguard

Change-Id: I604a769ef43c354a8eeadb415e413c19ca02571d

5 files changed, 210 insertions, 10 deletions

diff --git a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardHostView.java b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardHostView.java
index 058bf92..7e148b3 100644
--- a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardHostView.java
+++ b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardHostView.java
@@ -29,26 +29,30 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentSender;
 import android.content.SharedPreferences;
+import android.content.pm.UserInfo;
 import android.content.res.Resources;
 import android.graphics.Canvas;
+import android.os.UserManager;
 import android.telephony.TelephonyManager;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.util.Slog;
 import android.view.KeyEvent;
+import android.view.LayoutInflater;
 import android.view.View;
 import android.view.WindowManager;
 import android.view.animation.AnimationUtils;
 import android.widget.Button;
-import android.widget.ViewFlipper;
 import android.widget.RemoteViews.OnClickHandler;
+import android.widget.ViewFlipper;
 
+import com.android.internal.R;
 import com.android.internal.policy.impl.keyguard.KeyguardSecurityModel.SecurityMode;
 import com.android.internal.widget.LockPatternUtils;
-import com.android.internal.R;
 
 import java.io.File;
 import java.util.ArrayList;
+import java.util.List;
 
 public class KeyguardHostView extends KeyguardViewBase {
     // Use this to debug all of keyguard
@@ -614,6 +618,7 @@ public class KeyguardHostView extends KeyguardViewBase {
             Log.v(TAG, "Keyguard widgets disabled because of device policy admin");
             return;
         }
+        inflateAndAddUserSelectorWidgetIfNecessary();
         SharedPreferences prefs = mContext.getSharedPreferences(
                 KEYGUARD_WIDGET_PREFS, Context.MODE_PRIVATE);
         for (String key : prefs.getAll().keySet()) {
@@ -627,6 +632,21 @@ public class KeyguardHostView extends KeyguardViewBase {
         }
     }
 
+    private void inflateAndAddUserSelectorWidgetIfNecessary() {
+        // if there are multiple users, we need to add the multi-user switcher widget to the
+        // keyguard.
+        UserManager mUm = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
+        List<UserInfo> users = mUm.getUsers();
+
+        if (users.size() > 1) {
+            KeyguardWidgetFrame userswitcher = (KeyguardWidgetFrame)
+                LayoutInflater.from(mContext).inflate(R.layout.keyguard_multi_user_selector_widget,
+                        mAppWidgetContainer, false);
+            // add the switcher in the first position
+            mAppWidgetContainer.addView(userswitcher, 0);
+        }
+    }
+
     @Override
     public void cleanUp() {
 
diff --git a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardMultiUserAvatar.java b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardMultiUserAvatar.java
new file mode 100644
index 0000000..8aef68f
--- /dev/null
+++ b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardMultiUserAvatar.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2012 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.internal.policy.impl.keyguard;
+
+import android.app.ActivityManagerNative;
+import android.content.Context;
+import android.content.pm.UserInfo;
+import android.graphics.drawable.Drawable;
+import android.os.RemoteException;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.WindowManagerGlobal;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.android.internal.R;
+
+class KeyguardMultiUserAvatar extends FrameLayout {
+    private static final String TAG = "KeyguardViewHost";
+
+    private ImageView mUserImage;
+    private TextView mUserName;
+    private UserInfo mUserInfo;
+    private KeyguardMultiUserSelectorView mUserSelector;
+
+    public static KeyguardMultiUserAvatar fromXml(int resId, Context context,
+            KeyguardMultiUserSelectorView userSelector, UserInfo info) {
+        KeyguardMultiUserAvatar icon = (KeyguardMultiUserAvatar)
+                LayoutInflater.from(context).inflate(resId, userSelector, false);
+
+        icon.setup(info, userSelector);
+        return icon;
+    }
+
+    public KeyguardMultiUserAvatar(Context context) {
+        super(context, null, 0);
+    }
+
+    public KeyguardMultiUserAvatar(Context context, AttributeSet attrs) {
+        super(context, attrs, 0);
+    }
+
+    public KeyguardMultiUserAvatar(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public void setup(UserInfo user, KeyguardMultiUserSelectorView userSelector) {
+        mUserInfo = user;
+        mUserSelector = userSelector;
+        init();
+    }
+
+    private void init() {
+        mUserImage = (ImageView) findViewById(R.id.keyguard_user_avatar);
+        mUserName = (TextView) findViewById(R.id.keyguard_user_name);
+
+        mUserImage.setImageDrawable(Drawable.createFromPath(mUserInfo.iconPath));
+        mUserName.setText(mUserInfo.name);
+        setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                try {
+                    ActivityManagerNative.getDefault().switchUser(mUserInfo.id);
+                    WindowManagerGlobal.getWindowManagerService().lockNow();
+                    mUserSelector.init();
+                } catch (RemoteException re) {
+                    Log.e(TAG, "Couldn't switch user " + re);
+                }
+            }
+        });
+    }
+}
diff --git a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardMultiUserSelectorView.java b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardMultiUserSelectorView.java
new file mode 100644
index 0000000..ba99a55
--- /dev/null
+++ b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardMultiUserSelectorView.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2012 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.internal.policy.impl.keyguard;
+
+import android.app.ActivityManagerNative;
+import android.content.Context;
+import android.content.pm.UserInfo;
+import android.os.RemoteException;
+import android.os.UserManager;
+import android.util.AttributeSet;
+import android.widget.LinearLayout;
+
+import com.android.internal.R;
+
+import java.util.ArrayList;
+
+public class KeyguardMultiUserSelectorView extends LinearLayout{
+    private KeyguardMultiUserAvatar mActiveUser;
+    private LinearLayout mInactiveUsers;
+
+    public KeyguardMultiUserSelectorView(Context context) {
+        this(context, null, 0);
+    }
+
+    public KeyguardMultiUserSelectorView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public KeyguardMultiUserSelectorView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    protected void onFinishInflate () {
+        init();
+    }
+
+    public void init() {
+        mActiveUser = (KeyguardMultiUserAvatar) findViewById(R.id.keyguard_active_user);
+        mInactiveUsers = (LinearLayout) findViewById(R.id.keyguard_inactive_users);
+
+        mInactiveUsers.removeAllViews();
+
+        UserInfo currentUser;
+        try {
+            currentUser = ActivityManagerNative.getDefault().getCurrentUser();
+        } catch (RemoteException re) {
+            currentUser = null;
+        }
+
+        UserManager mUm = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
+        ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUm.getUsers());
+        for (UserInfo user: users) {
+            if (user.id == currentUser.id) {
+                setActiveUser(user);
+            } else {
+                createAndAddInactiveUser(user);
+            }
+        }
+    }
+
+    private void setActiveUser(UserInfo user) {
+        mActiveUser.setup(user, this);
+    }
+
+    private void createAndAddInactiveUser(UserInfo user) {
+        KeyguardMultiUserAvatar uv = KeyguardMultiUserAvatar.fromXml(
+                R.layout.keyguard_multi_user_avatar, mContext, this, user);
+        mInactiveUsers.addView(uv);
+    }
+}
diff --git a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetFrame.java b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetFrame.java
index e8078fd..f957753 100644
--- a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetFrame.java
+++ b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetFrame.java
@@ -38,6 +38,7 @@ public class KeyguardWidgetFrame extends FrameLayout {
     private static Drawable sRightOverscrollDrawable;
 
     private Drawable mForegroundDrawable;
+    private float mOverScrollAmount = 0f;
     private final Rect mForegroundRect = new Rect();
     private int mForegroundAlpha = 0;
 
@@ -80,14 +81,17 @@ public class KeyguardWidgetFrame extends FrameLayout {
     }
 
     void setOverScrollAmount(float r, boolean left) {
-        if (left && mForegroundDrawable != sLeftOverscrollDrawable) {
-            mForegroundDrawable = sLeftOverscrollDrawable;
-        } else if (!left && mForegroundDrawable != sRightOverscrollDrawable) {
-            mForegroundDrawable = sRightOverscrollDrawable;
-        }
+        if (Float.compare(mOverScrollAmount, r) != 0) {
+            mOverScrollAmount = r;
+            if (left && mForegroundDrawable != sLeftOverscrollDrawable) {
+                mForegroundDrawable = sLeftOverscrollDrawable;
+            } else if (!left && mForegroundDrawable != sRightOverscrollDrawable) {
+                mForegroundDrawable = sRightOverscrollDrawable;
+            }
 
-        mForegroundAlpha = (int) Math.round((r * 255));
-        mForegroundDrawable.setAlpha(mForegroundAlpha);
-        invalidate();
+            mForegroundAlpha = (int) Math.round((r * 255));
+            mForegroundDrawable.setAlpha(mForegroundAlpha);
+            invalidate();
+        }
     }
 }
diff --git a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetPager.java b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetPager.java
index 7d077e2..fd9362a 100644
--- a/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetPager.java
+++ b/policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetPager.java
@@ -146,6 +146,9 @@ public class KeyguardWidgetPager extends PagedView {
                         v.setPivotY(pageHeight / 2.0f);
                         v.setPivotX(pageWidth / 2.0f);
                         v.setRotationY(0f);
+                        if (v instanceof KeyguardWidgetFrame) {
+                            ((KeyguardWidgetFrame) v).setOverScrollAmount(0, false);
+                        }
                     }
                 }