vpn2: show third-party VPN services

VPN apps are shown alongside configured VPNs now. The requirement that
a password is set is now only enforced when setting up a configured
VPN as this is not necessary for apps.

Some UI redesign.

Bug: 19573824
Bug: 17474682
Bug: 19575658
Change-Id: I02bd977136929647d65b9784fb4cc5df24b45428

1 files changed, 132 insertions, 0 deletions

diff --git a/src/com/android/settings/vpn2/AppPreference.java b/src/com/android/settings/vpn2/AppPreference.java
new file mode 100644
index 0000000..1935dd8
--- /dev/null
+++ b/src/com/android/settings/vpn2/AppPreference.java
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2015 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.vpn2;
+
+import android.app.AppGlobals;
+import android.content.Context;
+import android.content.pm.IPackageManager;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.graphics.drawable.Drawable;
+import android.os.RemoteException;
+import android.os.UserHandle;
+import android.preference.Preference;
+import android.view.View.OnClickListener;
+
+import com.android.internal.net.LegacyVpnInfo;
+import com.android.internal.net.VpnConfig;
+import com.android.settings.R;
+
+/**
+ * {@link android.preference.Preference} containing information about a VPN
+ * application. Tracks the package name and connection state.
+ */
+public class AppPreference extends ManageablePreference {
+    public static final int STATE_CONNECTED = LegacyVpnInfo.STATE_CONNECTED;
+    public static final int STATE_DISCONNECTED = LegacyVpnInfo.STATE_DISCONNECTED;
+
+    private int mState = STATE_DISCONNECTED;
+    private String mPackageName;
+    private String mName;
+    private int mUid;
+
+    public AppPreference(Context context, OnClickListener onManage, final String packageName,
+            int uid) {
+        super(context, null /* attrs */, onManage);
+        mPackageName = packageName;
+        mUid = uid;
+        update();
+    }
+
+    public PackageInfo getPackageInfo() {
+        UserHandle user = new UserHandle(UserHandle.getUserId(mUid));
+        try {
+            IPackageManager ipm = AppGlobals.getPackageManager();
+            return ipm.getPackageInfo(mPackageName, 0 /* flags */, user.getIdentifier());
+        } catch (RemoteException rme) {
+            return null;
+        }
+    }
+
+    public String getPackageName() {
+        return mPackageName;
+    }
+
+    public int getUid() {
+        return mUid;
+    }
+
+    public int getState() {
+        return mState;
+    }
+
+    public void setState(int state) {
+        mState = state;
+        update();
+    }
+
+    private void update() {
+        final String[] states = getContext().getResources().getStringArray(R.array.vpn_states);
+        setSummary(mState != STATE_DISCONNECTED ? states[mState] : "");
+
+        mName = mPackageName;
+        Drawable icon = null;
+        try {
+            // Make all calls to the package manager as the appropriate user.
+            int userId = UserHandle.getUserId(mUid);
+            Context userContext = getContext().createPackageContextAsUser(
+                    getContext().getPackageName(), 0 /* flags */, new UserHandle(userId));
+            PackageManager pm = userContext.getPackageManager();
+
+            // Fetch icon and VPN label
+            PackageInfo pkgInfo = pm.getPackageInfo(mPackageName, 0 /* flags */);
+            if (pkgInfo != null) {
+                icon = pkgInfo.applicationInfo.loadIcon(pm);
+                mName = VpnConfig.getVpnLabel(userContext, mPackageName).toString();
+            }
+        } catch (PackageManager.NameNotFoundException nnfe) {
+            // Failed - use default app label and icon as fallback
+        }
+        if (icon == null) {
+            icon = getContext().getPackageManager().getDefaultActivityIcon();
+        }
+        setTitle(mName);
+        setIcon(icon);
+
+        notifyHierarchyChanged();
+    }
+
+    public int compareTo(Preference preference) {
+        if (preference instanceof AppPreference) {
+            AppPreference another = (AppPreference) preference;
+            int result;
+            if ((result = another.mState - mState) == 0 &&
+                    (result = mName.compareToIgnoreCase(another.mName)) == 0 &&
+                    (result = mPackageName.compareTo(another.mPackageName)) == 0) {
+                result = mUid - another.mUid;
+            }
+            return result;
+        } else if (preference instanceof ConfigPreference) {
+            // Use comparator from ConfigPreference
+            ConfigPreference another = (ConfigPreference) preference;
+            return -another.compareTo(this);
+        } else {
+            return super.compareTo(preference);
+        }
+    }
+}
+