Add a setting to enable/disable calling accounts.

Bug: 20303449
Change-Id: I34f9e5a572fd449ad617861576937f9648ae4ee9
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 5547624..34647a2 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -216,6 +216,17 @@
             </intent-filter>
         </activity>
 
+        <activity android:name=".settings.EnableAccountPreferenceActivity"
+                  android:label="@string/enable_account_preference_title"
+                  android:configChanges="orientation|screenSize|keyboardHidden"
+                  android:theme="@style/Theme.Telecom.DialerSettings"
+                  android:process=":ui">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+
         <activity android:name=".components.ErrorDialogActivity"
                 android:configChanges="orientation|screenSize|keyboardHidden"
                 android:excludeFromRecents="true"
diff --git a/res/values/strings.xml b/res/values/strings.xml
index a2295b5..181a7f7 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -73,6 +73,12 @@
         a text response. [CHAR LIMIT=40] -->
     <string name="respond_via_sms_confirmation_format">Message sent to <xliff:g id="phone_number">%s</xliff:g>.</string>
 
+    <!-- Title of settings screen that allows user to enable and disable phone-accounts.
+         Each method for placing a call (SIM1, SIM2, SIP account, etc) has a phone-account.
+         Phone-accounts that are created by third party apps can be disabled and enabled by user.
+         [CHAR LIMIT=30] -->
+    <string name="enable_account_preference_title">Calling accounts</string>
+
     <!-- Message indicating that the user is not allowed to make non-emergency outgoing phone calls
          due to a user restriction -->
     <string name="outgoing_call_not_allowed">Only emergency calls are allowed by the device owner.</string>
diff --git a/res/xml/enable_account_preference.xml b/res/xml/enable_account_preference.xml
new file mode 100644
index 0000000..aa9a9c9
--- /dev/null
+++ b/res/xml/enable_account_preference.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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.
+-->
+
+<!-- Settings screen that lets the user enable and disable registered phone accounts.
+     See EnableAccountPreferenceFragment.java -->
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+        android:title="@string/enable_account_preference_title">
+    <!-- content created dynamically. -->
+</PreferenceScreen>
diff --git a/src/com/android/server/telecom/settings/EnableAccountPreferenceActivity.java b/src/com/android/server/telecom/settings/EnableAccountPreferenceActivity.java
new file mode 100644
index 0000000..b68c8ff
--- /dev/null
+++ b/src/com/android/server/telecom/settings/EnableAccountPreferenceActivity.java
@@ -0,0 +1,31 @@
+/*
+ * 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.server.telecom.settings;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+public class EnableAccountPreferenceActivity extends Activity {
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        getFragmentManager().beginTransaction()
+                .replace(android.R.id.content, new EnableAccountPreferenceFragment())
+                .commit();
+    }
+}
diff --git a/src/com/android/server/telecom/settings/EnableAccountPreferenceFragment.java b/src/com/android/server/telecom/settings/EnableAccountPreferenceFragment.java
new file mode 100644
index 0000000..48e22b6
--- /dev/null
+++ b/src/com/android/server/telecom/settings/EnableAccountPreferenceFragment.java
@@ -0,0 +1,95 @@
+/*
+ * 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.server.telecom.settings;
+
+import android.content.Context;
+import android.graphics.drawable.Icon;
+import android.os.Bundle;
+import android.preference.PreferenceFragment;
+import android.preference.PreferenceScreen;
+import android.preference.SwitchPreference;
+import android.telecom.PhoneAccount;
+import android.telecom.PhoneAccountHandle;
+import android.telecom.TelecomManager;
+
+import com.android.server.telecom.R;
+
+import java.util.List;
+
+/**
+ * Lists all call-capable {@link PhoneAccount}s which are not SIM-based and provides a settings
+ * for enabling and disabling each of the accounts.  Only enabled accounts will be (1) listed as
+ * options with which to place a call and (2) capable of receiving incoming calls through the
+ * default dialer UI.
+ */
+public class EnableAccountPreferenceFragment extends PreferenceFragment {
+
+    private static final class AccountSwitchPreference extends SwitchPreference {
+        private final PhoneAccount mAccount;
+
+        public AccountSwitchPreference(Context context, PhoneAccount account) {
+            super(context);
+            mAccount = account;
+
+            setTitle(account.getLabel());
+            setSummary(account.getShortDescription());
+            Icon icon = account.getIcon();
+            if (icon != null) {
+                setIcon(icon.loadDrawable(context));
+            }
+        }
+
+        /** ${inheritDoc} */
+        @Override
+        protected void onClick() {
+            super.onClick();
+
+            // TODO: Handle enabling/disabling phone accounts
+        }
+    }
+
+    private TelecomManager mTelecomManager;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mTelecomManager = TelecomManager.from(getActivity());
+    }
+
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        addPreferencesFromResource(R.xml.enable_account_preference);
+
+        List<PhoneAccountHandle> accountHandles = mTelecomManager.getCallCapablePhoneAccounts();
+
+        PreferenceScreen screen = getPreferenceScreen();
+        Context context = getActivity();
+        for (PhoneAccountHandle handle : accountHandles) {
+            PhoneAccount account = mTelecomManager.getPhoneAccount(handle);
+            if (account != null) {
+                final boolean isSimAccount =
+                        0 != (account.getCapabilities() & PhoneAccount.CAPABILITY_SIM_SUBSCRIPTION);
+                if (!isSimAccount) {
+                    screen.addPreference(new AccountSwitchPreference(context, account));
+                }
+            }
+        }
+    }
+}