calendar: add default task list setting for dash quick-add

fixes #3134

quickshell/Common/SettingsData.qml

@@ -228,6 +228,7 @@ Singleton {
     property int firstDayOfWeek: -1
     property bool showWeekNumber: false
     property string calendarBackend: "auto"
+    property string defaultTaskCalendarId: ""
     property string clockFormat: "auto"
     readonly property bool localeUses24Hour: {
         const fmt = Qt.locale().timeFormat(Locale.ShortFormat).replace(/'[^']*'/g, "");

quickshell/Common/settings/SettingsSpec.js

@@ -78,6 +78,7 @@ var SPEC = {
     firstDayOfWeek: { def: -1 },
     showWeekNumber: { def: false },
     calendarBackend: { def: "auto" },
+    defaultTaskCalendarId: { def: "" },
     clockFormat: { def: "auto", onChange: "markGreeterSyncPending" },
     showSeconds: { def: false, onChange: "markGreeterSyncPending" },
     padHours12Hour: { def: false, onChange: "markGreeterSyncPending" },

quickshell/Modules/Settings/TimeWeatherTab.qml

@@ -166,6 +166,26 @@ Item {
                     }
                 }
 
+                SettingsDropdownRow {
+                    tab: "time"
+                    tags: ["calendar", "tasks", "list", "default", "caldav", "todo"]
+                    settingKey: "defaultTaskCalendarId"
+                    visible: CalendarService.isDankActive && _taskLists.length > 0
+                    text: I18n.tr("Default Task List")
+                    description: I18n.tr("Task list used when adding tasks from the dash calendar")
+                    readonly property var _taskLists: (CalendarService.calendars || []).filter(c => c.holdsTasks && !c.readOnly && !c.hidden)
+                    readonly property var _labels: [I18n.tr("Auto")].concat(_taskLists.map(c => c.name))
+                    options: _labels
+                    currentValue: {
+                        const idx = _taskLists.findIndex(c => c.id === SettingsData.defaultTaskCalendarId);
+                        return idx >= 0 ? _labels[idx + 1] : I18n.tr("Auto");
+                    }
+                    onValueChanged: value => {
+                        const idx = _labels.indexOf(value);
+                        SettingsData.set("defaultTaskCalendarId", idx > 0 ? _taskLists[idx - 1].id : "");
+                    }
+                }
+
                 Rectangle {
                     width: parent.width
                     height: 1

quickshell/Services/CalendarDankBackend.qml

@@ -573,7 +573,16 @@ Item {
 
     function defaultTaskCalendar() {
         const writable = taskCalendars().filter(c => !c.hidden);
-        return writable.length > 0 ? writable[0] : null;
+        if (writable.length === 0)
+            return null;
+        const preferred = SettingsData.defaultTaskCalendarId;
+        if (preferred) {
+            for (let i = 0; i < writable.length; i++) {
+                if (writable[i].id === preferred)
+                    return writable[i];
+            }
+        }
+        return writable[0];
     }
 
     function _taskAsEvent(t) {

quickshell/translations/settings_search_index.json

@@ -494,6 +494,32 @@
     ],
     "icon": "calendar_today"
   },
+  {
+    "section": "defaultTaskCalendarId",
+    "label": "Default Task List",
+    "tabIndex": 1,
+    "category": "Time & Weather",
+    "keywords": [
+      "adding",
+      "caldav",
+      "calendar",
+      "clock",
+      "dash",
+      "date",
+      "day",
+      "default",
+      "forecast",
+      "list",
+      "month",
+      "task",
+      "tasks",
+      "time",
+      "todo",
+      "weather",
+      "year"
+    ],
+    "description": "Task list used when adding tasks from the dash calendar"
+  },
   {
     "section": "weatherEnabled",
     "label": "Enable Weather",