WIP: Refactored join wifi fragment into view.

There is quite a lot of business logic that was moved directly from
the fragment to the view. Before this feature is complete, that logic
should either be moved into the activity, or into some sort of
associated Presenter class for the JoinWifiView.

F-Droid/res/layout/swap_join_wifi.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<org.fdroid.fdroid.views.swap.views.JoinWifiView xmlns:android="http://schemas.android.com/apk/res/android"
       android:orientation="vertical"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
@@ -57,4 +57,4 @@
             android:paddingBottom="20dp"/>
     <!-- android:layout_above="@id/btn_learn_more_about_wifi" -->
 
-</RelativeLayout>
+</org.fdroid.fdroid.views.swap.views.JoinWifiView>

F-Droid/src/org/fdroid/fdroid/views/swap/SwapWorkflowActivity.java

@@ -49,6 +49,7 @@ public class SwapWorkflowActivity extends FragmentActivity {
 
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
+        menu.clear();
         boolean parent = super.onPrepareOptionsMenu(menu);
         boolean inner  = currentView.buildMenu(menu, getMenuInflater());
         return parent || inner;
@@ -106,6 +107,13 @@ public class SwapWorkflowActivity extends FragmentActivity {
         inflateInnerView(R.layout.swap_join_wifi);
     }
 
+    public void onJoinWifiComplete() {
+        /*ensureLocalRepoRunning();
+        if (!attemptToShowNfc()) {
+            showWifiQr();
+        }*/
+    }
+
     class UpdateAsyncTask extends AsyncTask<Void, String, Void> {
 
         @SuppressWarnings("UnusedDeclaration")

F-Droid/src/org/fdroid/fdroid/views/swap/views/JoinWifiView.java

@@ -0,0 +1,120 @@
+package org.fdroid.fdroid.views.swap.views;
+
+import android.annotation.TargetApi;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.wifi.WifiManager;
+import android.os.Build;
+import android.support.annotation.NonNull;
+import android.support.v4.content.LocalBroadcastManager;
+import android.support.v4.view.MenuItemCompat;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import org.fdroid.fdroid.FDroidApp;
+import org.fdroid.fdroid.R;
+import org.fdroid.fdroid.net.WifiStateChangeService;
+import org.fdroid.fdroid.views.swap.SwapWorkflowActivity;
+
+public class JoinWifiView extends RelativeLayout implements SwapWorkflowActivity.InnerView {
+
+    public JoinWifiView(Context context) {
+        super(context);
+    }
+
+    public JoinWifiView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public JoinWifiView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    public JoinWifiView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    private SwapWorkflowActivity getActivity() {
+        // TODO: Try and find a better way to get to the SwapActivity, which makes less asumptions.
+        return (SwapWorkflowActivity)getContext();
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                openAvailableNetworks();
+            }
+        });
+        refreshWifiState();
+
+        // TODO: Listen for "Connecting..." state and reflect that in the view too.
+        LocalBroadcastManager.getInstance(getActivity()).registerReceiver(
+                new BroadcastReceiver() {
+                    @Override
+                    public void onReceive(Context context, Intent intent) {
+                        refreshWifiState();
+                    }
+                },
+                new IntentFilter(WifiStateChangeService.BROADCAST)
+        );
+
+    }
+
+    private void refreshWifiState() {
+        TextView descriptionView = (TextView) findViewById(R.id.text_description);
+        ImageView wifiIcon = (ImageView) findViewById(R.id.wifi_icon);
+        TextView ssidView = (TextView) findViewById(R.id.wifi_ssid);
+        TextView tapView = (TextView) findViewById(R.id.wifi_available_networks_prompt);
+        if (TextUtils.isEmpty(FDroidApp.bssid) && !TextUtils.isEmpty(FDroidApp.ipAddressString)) {
+            // empty bssid with an ipAddress means hotspot mode
+            descriptionView.setText(R.string.swap_join_this_hotspot);
+            wifiIcon.setImageDrawable(getResources().getDrawable(R.drawable.hotspot));
+            ssidView.setText(R.string.swap_active_hotspot);
+            tapView.setText(R.string.swap_switch_to_wifi);
+        } else if (TextUtils.isEmpty(FDroidApp.ssid)) {
+            // not connected to or setup with any wifi network
+            descriptionView.setText(R.string.swap_join_same_wifi);
+            wifiIcon.setImageDrawable(getResources().getDrawable(R.drawable.wifi));
+            ssidView.setText(R.string.swap_no_wifi_network);
+            tapView.setText(R.string.swap_view_available_networks);
+        } else {
+            // connected to a regular wifi network
+            descriptionView.setText(R.string.swap_join_same_wifi);
+            wifiIcon.setImageDrawable(getResources().getDrawable(R.drawable.wifi));
+            ssidView.setText(FDroidApp.ssid);
+            tapView.setText(R.string.swap_view_available_networks);
+        }
+    }
+
+    private void openAvailableNetworks() {
+        getActivity().startActivity(new Intent(WifiManager.ACTION_PICK_WIFI_NETWORK));
+    }
+
+    @Override
+    public boolean buildMenu(Menu menu, @NonNull MenuInflater inflater) {
+        inflater.inflate(R.menu.swap_next, menu);
+        MenuItem next = menu.findItem(R.id.action_next);
+        MenuItemCompat.setShowAsAction(next, MenuItemCompat.SHOW_AS_ACTION_ALWAYS | MenuItemCompat.SHOW_AS_ACTION_WITH_TEXT);
+        next.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+            @Override
+            public boolean onMenuItemClick(MenuItem item) {
+                getActivity().onJoinWifiComplete();
+                return true;
+            }
+        });
+        return true;
+    }
+}