[california/wip/725767-week] Adding calendar source subscriptions

[Jim Nelson <jnelson src gnome org>]

commit 595c5aa090aebd7a7f611ad9cc206aa6dc27df00
Author: Jim Nelson <jim yorba org>
Date:   Thu May 8 16:19:27 2014 -0700

    Adding calendar source subscriptions

 src/view/week/week-controller.vala |    2 +-
 src/view/week/week-grid.vala       |   44 +++++++++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 2 deletions(-)
---
diff --git a/src/view/week/week-controller.vala b/src/view/week/week-controller.vala
index e76f559..c1cda7d 100644
--- a/src/view/week/week-controller.vala
+++ b/src/view/week/week-controller.vala
@@ -111,7 +111,7 @@ public class Controller : BaseObject, View.Controllable {
     }
     
     private Gtk.Widget model_presentation(Calendar.Week week, out string? id) {
-        Grid week_grid = new Grid(week);
+        Grid week_grid = new Grid(this, week);
         id = week_grid.id;
         
         return week_grid;
diff --git a/src/view/week/week-grid.vala b/src/view/week/week-grid.vala
index a68c24d..4bbb588 100644
--- a/src/view/week/week-grid.vala
+++ b/src/view/week/week-grid.vala
@@ -25,6 +25,8 @@ namespace California.View.Week {
 internal class Grid : Gtk.Box {
     public const string PROP_WEEK = "week";
     
+    public weak Controller owner { get; private set; }
+    
     /**
      * The calendar { link Week} this { link Grid} displays.
      */
@@ -37,9 +39,12 @@ internal class Grid : Gtk.Box {
      */
     public string id { owned get { return week.to_string(); } }
     
-    public Grid(Calendar.Week week) {
+    private Backing.CalendarSubscriptionManager subscriptions;
+    
+    public Grid(Controller owner, Calendar.Week week) {
         Object(orientation: Gtk.Orientation.VERTICAL, spacing: 0);
         
+        this.owner = owner;
         this.week = week;
         
         // hold date labels in a horizontal box
@@ -87,6 +92,31 @@ internal class Grid : Gtk.Box {
         scrolled_panes.vscrollbar_policy = Gtk.PolicyType.ALWAYS;
         scrolled_panes.add(pane_grid);
         pack_end(scrolled_panes, true, true, 0);
+        
+        // set up calendar subscriptions for the week
+        subscriptions = new Backing.CalendarSubscriptionManager(
+            new Calendar.ExactTimeSpan.from_date_span(week, Calendar.Timezone.local));
+        subscriptions.calendar_added.connect(on_calendar_added);
+        subscriptions.calendar_removed.connect(on_calendar_removed);
+        subscriptions.instance_added.connect(on_calendar_instance_added);
+        subscriptions.instance_removed.connect(on_calendar_instance_removed);
+        
+        // only start now if owner is display this week, otherwise use timeout (to prevent
+        // subscriptions all coming up at once) ... use distance from current week as a way to
+        // spread out the timings, also assume that user will go forward rather than go backward,
+        // so weeks in past get +1 dinged against them
+        int diff = owner.week.difference(week);
+        if (diff < 0)
+            diff = diff.abs() + 1;
+        
+        if (diff != 0)
+            diff = 300 + (diff * 100);
+        
+        Timeout.add(diff, () => {
+            subscriptions.start_async.begin();
+            
+            return false;
+        });
     }
     
     private bool on_draw_bottom_line(Gtk.Widget widget, Cairo.Context ctx) {
@@ -100,6 +130,18 @@ internal class Grid : Gtk.Box {
         
         return false;
     }
+    
+    private void on_calendar_added(Backing.CalendarSource calendar) {
+    }
+    
+    private void on_calendar_removed(Backing.CalendarSource calendar) {
+    }
+    
+    private void on_calendar_instance_added(Component.Instance instance) {
+    }
+    
+    private void on_calendar_instance_removed(Component.Instance instance) {
+    }
 }
 
 }