Add FireDialog theme in order to fix navigation buttons hiden on some devices (#863)

* Add FireDialog theme in order to fix navigation buttons hiden on some devices

* Remove android:navigationBarColor from main style and move the same style to v27 theme file for better compatibility

Author: ezanetta

app/src/main/java/com/duckduckgo/app/global/view/FireDialog.kt

@@ -25,7 +25,10 @@ import kotlinx.android.synthetic.main.sheet_fire_clear_data.*
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 
-class FireDialog(context: Context, private val clearPersonalDataAction: ClearPersonalDataAction) : BottomSheetDialog(context) {
+class FireDialog(
+    context: Context,
+    private val clearPersonalDataAction: ClearPersonalDataAction
+) : BottomSheetDialog(context, R.style.FireDialog) {
 
     var clearStarted: (() -> Unit) = {}
     var clearComplete: (() -> Unit) = {}

app/src/main/res/values-v27/themes.xml

@@ -30,4 +30,10 @@
         <item name="android:navigationBarColor">@color/white</item>
     </style>
 
+    <style name="FireDialog" parent="@style/Theme.Design.BottomSheetDialog">
+        <item name="android:windowIsFloating">false</item>
+        <item name="android:navigationBarColor">?toolbarBgColor</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
+    </style>
+
 </resources>

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

@@ -310,4 +310,9 @@
         <item name="android:textColor">?attr/colorAccent</item>
     </style>
 
+    <style name="FireDialog" parent="@style/Theme.Design.BottomSheetDialog">
+        <item name="android:windowIsFloating">false</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
+    </style>
+
 </resources>