add detailed dialog for data source selection

app/src/main/java/net/vonforst/evmap/fragment/DataSourceSelectDialog.kt

@@ -0,0 +1,80 @@
+package net.vonforst.evmap.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.appcompat.app.AppCompatDialogFragment
+import net.vonforst.evmap.databinding.DialogDataSourceSelectBinding
+import net.vonforst.evmap.storage.PreferenceDataSource
+import java.util.*
+
+class DataSourceSelectDialog : AppCompatDialogFragment() {
+    private lateinit var binding: DialogDataSourceSelectBinding
+    var okListener: ((String) -> Unit)? = null
+
+    companion object {
+        fun getInstance(
+            cancelEnabled: Boolean
+        ): DataSourceSelectDialog {
+            val dialog = DataSourceSelectDialog()
+            dialog.arguments = Bundle().apply {
+                putBoolean("cancel_enabled", cancelEnabled)
+            }
+            return dialog
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        binding = DialogDataSourceSelectBinding.inflate(inflater, container, false)
+        prefs = PreferenceDataSource(requireContext())
+        return binding.root
+    }
+
+    override fun onStart() {
+        super.onStart()
+
+        dialog?.window?.setLayout(
+            ViewGroup.LayoutParams.MATCH_PARENT,
+            ViewGroup.LayoutParams.WRAP_CONTENT
+        )
+    }
+
+    private lateinit var prefs: PreferenceDataSource
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        val args = requireArguments()
+        binding.btnCancel.visibility =
+            if (args.getBoolean("cancel_enabled")) View.VISIBLE else View.GONE
+
+        if (prefs.dataSourceSet) {
+            when (prefs.dataSource) {
+                "goingelectric" -> binding.rbGoingElectric.isChecked = true
+                "openchargemap" -> binding.rbOpenChargeMap.isChecked = true
+            }
+        }
+
+        binding.btnCancel.setOnClickListener {
+            dismiss()
+        }
+        binding.btnOK.setOnClickListener {
+            val result = if (binding.rbGoingElectric.isChecked) {
+                "goingelectric"
+            } else if (binding.rbOpenChargeMap.isChecked) {
+                "openchargemap"
+            } else {
+                return@setOnClickListener
+            }
+            prefs.dataSource = result
+            okListener?.let { listener ->
+                listener(result)
+            }
+            prefs.dataSourceSet = true
+            dismiss()
+        }
+    }
+}

app/src/main/java/net/vonforst/evmap/storage/PreferenceDataSource.kt

@@ -17,6 +17,12 @@ class PreferenceDataSource(val context: Context) {
             sp.edit().putString("data_source", value).apply()
         }
 
+    var dataSourceSet: Boolean
+        get() = sp.getBoolean("data_source_set", false)
+        set(value) {
+            sp.edit().putBoolean("data_source_set", value).apply()
+        }
+
     var navigateUseMaps: Boolean
         get() = sp.getBoolean("navigate_use_maps", true)
         set(value) {

app/src/main/java/net/vonforst/evmap/ui/DataSourceSelectDialogPreference.kt

@@ -0,0 +1,18 @@
+package net.vonforst.evmap.ui
+
+import android.content.Context
+import android.util.AttributeSet
+import androidx.appcompat.app.AppCompatActivity
+import androidx.preference.ListPreference
+import net.vonforst.evmap.fragment.DataSourceSelectDialog
+
+class DataSourceSelectDialogPreference(ctx: Context, attrs: AttributeSet) :
+    ListPreference(ctx, attrs) {
+    override fun onClick() {
+        val dialog = DataSourceSelectDialog.getInstance(true)
+        dialog.okListener = { selected ->
+            value = selected
+        }
+        dialog.show((context as AppCompatActivity).supportFragmentManager, null)
+    }
+}

app/src/main/res/layout/dialog_data_source_select.xml

@@ -0,0 +1,109 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <TextView
+        android:id="@+id/dialogTitle"
+        android:textAppearance="@style/TextAppearance.MaterialComponents.Headline6"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="18dp"
+        android:layout_marginEnd="16dp"
+        android:text="@string/pref_data_source"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/dataSourceDescription"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="16dp"
+        android:text="@string/data_sources_description"
+        android:textAppearance="@style/TextAppearance.MaterialComponents.Body2"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/dialogTitle" />
+
+
+    <Button
+        android:id="@+id/btnOK"
+        style="@style/Widget.MaterialComponents.Button.TextButton.Dialog"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="8dp"
+        android:text="@string/ok"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/radioGroup2" />
+
+    <Button
+        android:id="@+id/btnCancel"
+        style="@style/Widget.MaterialComponents.Button.TextButton.Dialog"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:layout_marginBottom="8dp"
+        android:text="@string/cancel"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/btnOK"
+        app:layout_constraintTop_toBottomOf="@+id/radioGroup2" />
+
+    <RadioGroup
+        android:id="@+id/radioGroup2"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="16dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/dataSourceDescription">
+
+        <RadioButton
+            android:id="@+id/rbGoingElectric"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/data_source_goingelectric"
+            android:textColor="#098ac7"
+            android:buttonTint="#098ac7"
+            android:textSize="16sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/textView27"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="-8dp"
+            android:layout_marginBottom="8dp"
+            android:layout_marginStart="32dp"
+            android:text="@string/data_source_goingelectric_desc" />
+
+        <RadioButton
+            android:id="@+id/rbOpenChargeMap"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/data_source_openchargemap"
+            android:textColor="#587e25"
+            android:buttonTint="#587e25"
+            android:textSize="16sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/textView28"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="-8dp"
+            android:layout_marginStart="32dp"
+            android:text="@string/data_source_openchargemap_desc" />
+
+    </RadioGroup>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values-de/arrays.xml

@@ -12,6 +12,6 @@
     </string-array>
     <string-array name="pref_data_source_names">
         <item>GoingElectric.de</item>
-        <item>OpenChargeMap.org</item>
+        <item>Open Charge Map</item>
     </string-array>
 </resources>

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

@@ -215,4 +215,9 @@
         <item quantity="other">%d Tarife ausgewählt</item>
     </plurals>
     <string name="unknown_operator">Unbekannter Betreiber</string>
+    <string name="data_sources_description">EVMap unterstützt verschiedene Datenquellen. Bitte wähle aus, welche du nutzen möchtest. Du kannst die Datenquelle später in den Einstellungen der App ändern.</string>
+    <string name="data_source_goingelectric">GoingElectric.de</string>
+    <string name="data_source_openchargemap">Open Charge Map</string>
+    <string name="data_source_goingelectric_desc">Sehr gute Abdeckung in Deutschland, Österreich, Schweiz und vielen angrenzenden Ländern. Beschreibungen in Deutsch. Von der Community gepflegt.</string>
+    <string name="data_source_openchargemap_desc"><![CDATA[Weltweite Abdeckung mit variierender Qualität. Beschreibungen in Englisch oder Landessprache. Von der Community gepflegt & offizielle Verzeichnisse einiger Länder (z.B. Nordamerika, UK, Frankreich, Norwegen).]]></string>
 </resources>

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

@@ -50,7 +50,7 @@
     </string-array>
     <string-array name="pref_data_source_names">
         <item>GoingElectric.de</item>
-        <item>OpenChargeMap.org</item>
+        <item>Open Charge Map</item>
     </string-array>
     <string-array name="pref_data_source_values" tranlatable="false">
         <item>goingelectric</item>

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

@@ -200,4 +200,9 @@
         <item quantity="other">%d plans selected</item>
     </plurals>
     <string name="unknown_operator">Unknown operator</string>
+    <string name="data_sources_description">EVMap supports multiple data sources. Please select the one you would like to use. You can always change the data source in the app\'s settings.</string>
+    <string name="data_source_goingelectric">GoingElectric.de</string>
+    <string name="data_source_openchargemap">Open Charge Map</string>
+    <string name="data_source_goingelectric_desc">Very good coverage in Germany, Austria and Switzerland and many neighboring countries. Descriptions in German. Community-maintained.</string>
+    <string name="data_source_openchargemap_desc"><![CDATA[Worldwide coverage with varying quality. Descriptions in English or local language. Community-maintained & government open data in some countries (e.g. North America, UK, France, Norway).]]></string>
 </resources>

app/src/main/res/xml/settings.xml

@@ -21,7 +21,7 @@
 
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/settings_charger_data">
-        <ListPreference
+        <net.vonforst.evmap.ui.DataSourceSelectDialogPreference
             android:key="data_source"
             android:title="@string/pref_data_source"
             android:entries="@array/pref_data_source_names"