add basic settings screen (+ navigation!)

app/build.gradle

@@ -47,10 +47,11 @@ dependencies {
     implementation 'androidx.fragment:fragment-ktx:1.4.0'
     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
-    implementation "androidx.room:room-runtime:$room_version"
     implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
     implementation "androidx.navigation:navigation-ui-ktx:$nav_version"
     implementation 'androidx.preference:preference-ktx:1.1.1'
+    implementation "androidx.room:room-runtime:$room_version"
+    implementation "androidx.room:room-ktx:$room_version"
     implementation 'com.google.android.material:material:1.4.0'
     kapt "androidx.room:room-compiler:$room_version"
     testImplementation 'junit:junit:4.13.2'

app/src/main/java/dev/lowrespalmtree/comet/History.kt

@@ -13,19 +13,22 @@ object History {
     @Dao
     interface HistoryEntryDao {
         @Query("SELECT * FROM HistoryEntry WHERE :uri = uri LIMIT 1")
-        fun get(uri: String): HistoryEntry?
+        suspend fun get(uri: String): HistoryEntry?
 
         @Query("SELECT * FROM HistoryEntry ORDER BY lastVisit DESC")
-        fun getAll(): List<HistoryEntry>
+        suspend fun getAll(): List<HistoryEntry>
+
+        @Query("SELECT * FROM HistoryEntry ORDER BY lastVisit DESC LIMIT 1")
+        suspend fun getLast(): HistoryEntry?
 
         @Insert(onConflict = OnConflictStrategy.IGNORE)
-        fun insert(vararg entries: HistoryEntry)
+        suspend fun insert(vararg entries: HistoryEntry)
 
         @Update
-        fun update(vararg entries: HistoryEntry)
+        suspend fun update(vararg entries: HistoryEntry)
     }
 
-    fun record(uri: String, title: String?) {
+    suspend fun record(uri: String, title: String?) {
         val now = System.currentTimeMillis()
         val dao = Database.INSTANCE.historyEntryDao()
         val entry = dao.get(uri)
@@ -34,4 +37,6 @@ object History {
         else
             dao.update(entry.also { it.title = title; it.lastVisit = now })
     }
+
+    suspend fun getLast(): HistoryEntry? = Database.INSTANCE.historyEntryDao().getLast()
 }

app/src/main/java/dev/lowrespalmtree/comet/SettingsFragment.kt

@@ -1,11 +1,29 @@
 package dev.lowrespalmtree.comet
 
 import android.os.Bundle
+import android.util.Log
+import androidx.lifecycle.lifecycleScope
+import androidx.preference.EditTextPreference
+import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SeekBarPreference
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 
 class SettingsFragment : PreferenceFragmentCompat() {
-
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.root_preferences, rootKey)
+        findPreference<Preference>("home_set")?.setOnPreferenceClickListener {
+            lifecycleScope.launch(Dispatchers.IO) {
+                val lastEntry = History.getLast()
+                launch(Dispatchers.Main) {
+                    if (lastEntry != null)
+                        findPreference<EditTextPreference>("home")?.text = lastEntry.uri
+                    else
+                        toast(requireContext(), R.string.no_current_url)
+                }
+            }
+            true
+        }
     }
 }

app/src/main/java/dev/lowrespalmtree/comet/UiUtils.kt

@@ -0,0 +1,7 @@
+package dev.lowrespalmtree.comet
+
+import android.content.Context
+import android.widget.Toast
+
+fun toast(context: Context, stringId: Int, length: Int = Toast.LENGTH_SHORT) =
+    Toast.makeText(context, stringId, length).show()

app/src/main/res/navigation/main.xml

@@ -7,11 +7,9 @@
     <fragment
         android:id="@+id/pageViewFragment"
         android:name="dev.lowrespalmtree.comet.PageViewFragment"
-        android:label="PageViewFragment" >
+        android:label="PageViewFragment" />
-    </fragment>
     <fragment
         android:id="@+id/settingsFragment"
         android:name="dev.lowrespalmtree.comet.SettingsFragment"
-        android:label="SettingsFragment">
+        android:label="SettingsFragment" />
-    </fragment>
 </navigation>

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

@@ -4,18 +4,29 @@
     <string name="url">URL</string>
     <string name="settings">Settings</string>
     <string name="history">History</string>
-    <!-- Preference Titles -->
-    <string name="messages_header">Messages</string>
-    <string name="sync_header">Sync</string>
 
-    <!-- Messages Preferences -->
+    <!-- Preferences General -->
+    <string name="pref_general_header">General</string>
+    <string name="pref_home_title">Home page</string>
+    <string name="pref_home_set">Set last visited page as home page</string>
+    <string name="no_current_url">No current URL.</string>
+
+
+    <!-- Preference Protocol -->
+    <string name="pref_protocol_header">Protocol</string>
+    <string name="pref_connection_timeout_title">Connection timeout (seconds)</string>
+    <string name="pref_read_timeout_title">Read timeout (seconds)</string>
+
+    <!-- Newly added -->
+
     <string name="signature_title">Your signature</string>
     <string name="reply_title">Default reply action</string>
 
-    <!-- Sync Preferences -->
     <string name="sync_title">Sync email periodically</string>
     <string name="attachment_title">Download incoming attachments</string>
     <string name="attachment_summary_on">Automatically download attachments for incoming emails
     </string>
     <string name="attachment_summary_off">Only download attachments when manually requested</string>
+
+
 </resources>

app/src/main/res/xml/root_preferences.xml

@@ -1,12 +1,17 @@
-<androidx.preference.PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto">
+<androidx.preference.PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <PreferenceCategory app:title="@string/messages_header">
+    <PreferenceCategory app:title="@string/pref_general_header">
 
         <EditTextPreference
-            app:key="signature"
+            app:key="home"
-            app:title="@string/signature_title"
+            app:title="@string/pref_home_title"
             app:useSimpleSummaryProvider="true" />
 
+        <Preference
+            app:key="home_set"
+            app:title="@string/pref_home_set" />
+
         <ListPreference
             app:defaultValue="reply"
             app:entries="@array/reply_entries"
@@ -17,7 +22,23 @@
 
     </PreferenceCategory>
 
-    <PreferenceCategory app:title="@string/sync_header">
+    <PreferenceCategory app:title="@string/pref_protocol_header">
+
+        <SeekBarPreference
+            app:key="connection_timeout"
+            app:title="@string/pref_connection_timeout_title"
+            app:seekBarIncrement="1"
+            app:showSeekBarValue="true"
+            android:max="60"
+            android:defaultValue="10" />
+
+        <SeekBarPreference
+            app:key="read_timeout"
+            app:title="@string/pref_read_timeout_title"
+            app:seekBarIncrement="1"
+            app:showSeekBarValue="true"
+            android:max="60"
+            android:defaultValue="10" />
 
         <SwitchPreferenceCompat
             app:key="sync"