JournalEditor: Allow a default folder to be specified

This way all Journal Entries can go to that folder by default. It makes
adding a new journal entry easier.

Related to #118

lib/screens/folder_view.dart

@@ -209,7 +209,16 @@ class _FolderViewState extends State<FolderView> {
     NotesFolderFS fsFolder = widget.notesFolder.fsFolder;
     if (widget.notesFolder.name != fsFolder.name) {
       var spec = Settings.instance.defaultNewNoteFolderSpec;
-      fsFolder = fsFolder.getFolderWithSpec(spec);
+      var journalSpec = Settings.instance.journalEditordefaultNewNoteFolderSpec;
+
+      switch (editorType) {
+        case EditorType.Journal:
+          fsFolder = fsFolder.getFolderWithSpec(journalSpec);
+          break;
+        default:
+          fsFolder = fsFolder.getFolderWithSpec(spec);
+          break;
+      }
     }
 
     var route = MaterialPageRoute(

lib/screens/settings_editors.dart

@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 import 'package:gitjournal/screens/settings_screen.dart';
 import 'package:gitjournal/settings.dart';
 import 'package:gitjournal/screens/settings_widgets.dart';
+import 'package:gitjournal/core/notes_folder_fs.dart';
+import 'package:gitjournal/widgets/folder_selection_dialog.dart';
 
 class SettingsEditorsScreen extends StatefulWidget {
   @override
@@ -12,6 +14,11 @@ class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
   @override
   Widget build(BuildContext context) {
     var settings = Settings.instance;
+    var defaultNewFolder =
+        Settings.instance.journalEditordefaultNewNoteFolderSpec;
+    if (defaultNewFolder.isEmpty) {
+      defaultNewFolder = "Root Folder";
+    }
 
     var body = ListView(children: <Widget>[
       ListPreference(
@@ -26,7 +33,7 @@ class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
           setState(() {});
         },
       ),
-      SettingsHeader("Markdown Editor Settings"),
+      SettingsHeader("Markdown Editor"),
       ListPreference(
         title: "Default State",
         currentOption: settings.markdownDefaultView.toPublicString(),
@@ -40,6 +47,22 @@ class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
           setState(() {});
         },
       ),
+      SettingsHeader("Journal Editor"),
+      ListTile(
+        title: const Text("Default Folder"),
+        subtitle: Text(defaultNewFolder),
+        onTap: () async {
+          var destFolder = await showDialog<NotesFolderFS>(
+            context: context,
+            builder: (context) => FolderSelectionDialog(),
+          );
+
+          Settings.instance.journalEditordefaultNewNoteFolderSpec =
+              destFolder != null ? destFolder.pathSpec() : "";
+          Settings.instance.save();
+          setState(() {});
+        },
+      ),
     ]);
 
     return Scaffold(

lib/settings.dart

@@ -25,6 +25,7 @@ class Settings {
   String yamlModifiedKey = "modified";
   bool yamlHeaderEnabled = true;
   String defaultNewNoteFolderSpec = "";
+  String journalEditordefaultNewNoteFolderSpec = "";
 
   RemoteSyncFrequency remoteSyncFrequency = RemoteSyncFrequency.Default;
   SortingMode sortingMode = SortingMode.Default;
@@ -59,6 +60,9 @@ class Settings {
     yamlHeaderEnabled = pref.getBool("yamlHeaderEnabled") ?? yamlHeaderEnabled;
     defaultNewNoteFolderSpec =
         pref.getString("defaultNewNoteFolderSpec") ?? defaultNewNoteFolderSpec;
+    journalEditordefaultNewNoteFolderSpec =
+        pref.getString("journalEditordefaultNewNoteFolderSpec") ??
+            journalEditordefaultNewNoteFolderSpec;
 
     remoteSyncFrequency = RemoteSyncFrequency.fromInternalString(
         pref.getString("remoteSyncFrequency"));
@@ -97,6 +101,8 @@ class Settings {
     pref.setString("yamlModifiedKey", yamlModifiedKey);
     pref.setBool("yamlHeaderEnabled", yamlHeaderEnabled);
     pref.setString("defaultNewNoteFolderSpec", defaultNewNoteFolderSpec);
+    pref.setString("journalEditordefaultNewNoteFolderSpec",
+        journalEditordefaultNewNoteFolderSpec);
     pref.setString(
         "remoteSyncFrequency", remoteSyncFrequency.toInternalString());
     pref.setString("sortingMode", sortingMode.toInternalString());
@@ -126,6 +132,8 @@ class Settings {
       "yamlModifiedKey": yamlModifiedKey,
       "yamlHeaderEnabled": yamlHeaderEnabled,
       "defaultNewNoteFolderSpec": defaultNewNoteFolderSpec,
+      "journalEditordefaultNewNoteFolderSpec":
+          journalEditordefaultNewNoteFolderSpec,
       "defaultEditor": defaultEditor.toInternalString(),
       "defaultView": defaultView.toInternalString(),
       "sortingMode": sortingMode.toInternalString(),