Button for plugin preferences

app/src/main/java/info/nightscout/androidaps/MainActivity.java

@@ -65,6 +65,8 @@ public class MainActivity extends AppCompatActivity {
 
     private ActionBarDrawerToggle actionBarDrawerToggle;
 
+    private MenuItem pluginPreferencesMenuItem;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -93,6 +95,29 @@ public class MainActivity extends AppCompatActivity {
         registerBus();
         setupTabs();
         setupViews(false);
+
+        final ViewPager viewPager = findViewById(R.id.pager);
+        viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
+            @Override
+            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+            }
+
+            @Override
+            public void onPageSelected(int position) {
+                checkPluginPreferences(viewPager);
+            }
+
+            @Override
+            public void onPageScrollStateChanged(int state) {
+            }
+        });
+    }
+
+    private void checkPluginPreferences(ViewPager viewPager) {
+        if (pluginPreferencesMenuItem == null) return;
+        if (((TabPageAdapter) viewPager.getAdapter()).getPluginAt(viewPager.getCurrentItem()).getPreferencesId() != -1)
+            pluginPreferencesMenuItem.setEnabled(true);
+        else pluginPreferencesMenuItem.setEnabled(false);
     }
 
     @Override
@@ -191,6 +216,7 @@ public class MainActivity extends AppCompatActivity {
         mPager.setAdapter(pageAdapter);
         if (switchToLast)
             mPager.setCurrentItem(pageAdapter.getCount() - 1, false);
+        checkPluginPreferences(mPager);
     }
 
     private void setupTabs() {
@@ -312,6 +338,8 @@ public class MainActivity extends AppCompatActivity {
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.menu_main, menu);
+        pluginPreferencesMenuItem = menu.findItem(R.id.nav_plugin_preferences);
+        checkPluginPreferences(findViewById(R.id.pager));
         return true;
     }
 
@@ -388,6 +416,15 @@ public class MainActivity extends AppCompatActivity {
                 System.runFinalization();
                 System.exit(0);
                 return true;
+            case R.id.nav_plugin_preferences:
+                ViewPager viewPager = findViewById(R.id.pager);
+                final PluginBase plugin = ((TabPageAdapter) viewPager.getAdapter()).getPluginAt(viewPager.getCurrentItem());
+                PasswordProtection.QueryPassword(this, R.string.settings_password, "settings_password", () -> {
+                    Intent i = new Intent(this, PreferencesActivity.class);
+                    i.putExtra("id", plugin.getPreferencesId());
+                    startActivity(i);
+                }, null);
+                return true;
         }
         return actionBarDrawerToggle.onOptionsItemSelected(item);
     }

app/src/main/java/info/nightscout/androidaps/SingleFragmentActivity.java

@@ -1,21 +1,28 @@
 package info.nightscout.androidaps;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
+import android.support.v4.view.ViewPager;
 import android.support.v7.app.AppCompatActivity;
+import android.view.Menu;
 import android.view.MenuItem;
 
 import info.nightscout.androidaps.interfaces.PluginBase;
+import info.nightscout.androidaps.tabs.TabPageAdapter;
+import info.nightscout.utils.PasswordProtection;
 
 public class SingleFragmentActivity extends AppCompatActivity {
 
+    private PluginBase plugin;
+
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_single_fragment);
 
-        PluginBase plugin = MainApp.getPluginsList().get(getIntent().getIntExtra("plugin", -1));
+        this.plugin = MainApp.getPluginsList().get(getIntent().getIntExtra("plugin", -1));
         setTitle(plugin.getName());
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setDisplayShowHomeEnabled(true);
@@ -28,7 +35,25 @@ public class SingleFragmentActivity extends AppCompatActivity {
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        if (item.getItemId() == android.R.id.home) finish();
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        }
+        else if (item.getItemId() == R.id.nav_plugin_preferences) {
+            PasswordProtection.QueryPassword(this, R.string.settings_password, "settings_password", () -> {
+                Intent i = new Intent(this, PreferencesActivity.class);
+                i.putExtra("id", plugin.getPreferencesId());
+                startActivity(i);
+            }, null);
+            return true;
+        }
         return false;
     }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        if (plugin.getPreferencesId() != -1)
+            getMenuInflater().inflate(R.menu.menu_single_fragment, menu);
+        return super.onCreateOptionsMenu(menu);
+    }
 }

app/src/main/java/info/nightscout/androidaps/tabs/TabPageAdapter.java

@@ -39,6 +39,10 @@ public class TabPageAdapter extends FragmentStatePagerAdapter {
         return Fragment.instantiate(context, visibleFragmentList.get(position).pluginDescription.getFragmentClass());
     }
 
+    public PluginBase getPluginAt(int position) {
+        return visibleFragmentList.get(position);
+    }
+
     @Override
     public void finishUpdate(ViewGroup container) {
         try{

app/src/main/res/menu/menu_main.xml

@@ -6,6 +6,10 @@
         android:id="@+id/nav_preferences"
         app:showAsAction="never"
         android:title="@string/nav_preferences" />
+    <item
+        android:id="@+id/nav_plugin_preferences"
+        app:showAsAction="never"
+        android:title="@string/nav_plugin_preferences" />
     <item
         android:id="@+id/nav_historybrowser"
         app:showAsAction="never"

app/src/main/res/menu/menu_single_fragment.xml

@@ -0,0 +1,10 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    tools:context=".MainActivity">
+    <item
+        android:id="@+id/nav_plugin_preferences"
+        app:showAsAction="ifRoom"
+        android:icon="@drawable/ic_settings"
+        android:title="@string/nav_plugin_preferences" />
+</menu>

app/src/main/res/values/strings.xml

@@ -1090,4 +1090,5 @@
     <string name="exit">Exit</string>
     <string name="open_navigation">Open navigation</string>
     <string name="close_navigation">Close navigation</string>
+    <string name="nav_plugin_preferences">Plugin preferences</string>
 </resources>