[WifiSettings] Add Wi-Fi dialog activity

Add a Wi-Fi dialog activity that can be started by setup wizard to
connect to a Wi-Fi access point.

Also refactored mEdit and mModify in WifiConfigController into an
int-enum mMode, with modes view, connect and modify. This is how the
new modes maps to the old flags:

MODE_VIEW     --  mEdit = false, mModify = *
MODE_CONNECT  --  mEdit = true, mModify = false
MODE_MODIFY   --  mEdit = true, mModify = true

Bug: 23426311
Change-Id: I8e2221fd3c42577068e07686dab245dd5888e0ae

src/com/android/settings/wifi/WifiDialogActivity.java

@@ -0,0 +1,118 @@
+/*
+ * 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.wifi;
+
+import android.app.Activity;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.net.NetworkInfo;
+import android.net.wifi.WifiConfiguration;
+import android.net.wifi.WifiManager;
+import android.os.Bundle;
+import android.util.Log;
+
+import com.android.settingslib.wifi.AccessPoint;
+
+public class WifiDialogActivity extends Activity implements WifiDialog.WifiDialogListener,
+        DialogInterface.OnDismissListener {
+
+    private static final String TAG = "WifiDialogActivity";
+
+    private static final int RESULT_CONNECTED = RESULT_FIRST_USER;
+    private static final int RESULT_FORGET = RESULT_FIRST_USER + 1;
+
+    private static final String KEY_ACCESS_POINT_STATE = "access_point_state";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        final Intent intent = getIntent();
+        final Bundle accessPointState = intent.getBundleExtra(KEY_ACCESS_POINT_STATE);
+        final AccessPoint accessPoint = new AccessPoint(this, accessPointState);
+
+        WifiDialog dialog = new WifiDialog(this, this, accessPoint, WifiConfigUiBase.MODE_CONNECT);
+        dialog.show();
+        dialog.setOnDismissListener(this);
+    }
+
+    @Override
+    public void onForget(WifiDialog dialog) {
+        final WifiManager wifiManager = getSystemService(WifiManager.class);
+        final AccessPoint accessPoint = dialog.getController().getAccessPoint();
+        if (accessPoint != null) {
+            if (!accessPoint.isSaved()) {
+                if (accessPoint.getNetworkInfo() != null &&
+                        accessPoint.getNetworkInfo().getState() != NetworkInfo.State.DISCONNECTED) {
+                    // Network is active but has no network ID - must be ephemeral.
+                    wifiManager.disableEphemeralNetwork(
+                            AccessPoint.convertToQuotedString(accessPoint.getSsidStr()));
+                } else {
+                    // Should not happen, but a monkey seems to trigger it
+                    Log.e(TAG, "Failed to forget invalid network " + accessPoint.getConfig());
+                }
+            } else {
+                wifiManager.forget(accessPoint.getConfig().networkId, null /* listener */);
+            }
+        }
+
+        Intent resultData = new Intent();
+        if (accessPoint != null) {
+            Bundle accessPointState = new Bundle();
+            accessPoint.saveWifiState(accessPointState);
+            resultData.putExtra(KEY_ACCESS_POINT_STATE, accessPointState);
+        }
+        setResult(RESULT_FORGET);
+        finish();
+    }
+
+    @Override
+    public void onSubmit(WifiDialog dialog) {
+        final WifiConfiguration config = dialog.getController().getConfig();
+        final AccessPoint accessPoint = dialog.getController().getAccessPoint();
+        final WifiManager wifiManager = getSystemService(WifiManager.class);
+
+        if (config == null) {
+            if (accessPoint != null && accessPoint.isSaved()) {
+                wifiManager.connect(accessPoint.getConfig(), null /* listener */);
+            }
+        } else {
+            wifiManager.save(config, null /* listener */);
+            if (accessPoint != null) {
+                // accessPoint is null for "Add network"
+                NetworkInfo networkInfo = accessPoint.getNetworkInfo();
+                if (networkInfo == null || !networkInfo.isConnected()) {
+                    wifiManager.connect(config, null /* listener */);
+                }
+            }
+        }
+
+        Intent resultData = new Intent();
+        if (accessPoint != null) {
+            Bundle accessPointState = new Bundle();
+            accessPoint.saveWifiState(accessPointState);
+            resultData.putExtra(KEY_ACCESS_POINT_STATE, accessPointState);
+        }
+        setResult(RESULT_CONNECTED, resultData);
+        finish();
+    }
+
+    @Override
+    public void onDismiss(DialogInterface dialogInterface) {
+        finish();
+    }
+}