Bug 321693 (part 2) Listen for changes to the prefs for multiweek weeks in view. r=mvl

calendar/base/content/calendar-decorated-multiweek-view.xml

@@ -65,6 +65,10 @@
                     viewElem.weekStartOffset = pb2.getIntPref("calendar.week.start");
                 } catch (ex) {}
 
+                try {
+                    this.mWeeksInView = pb2.getIntPref("calendar.weeks.inview");
+                } catch (ex) {}
+
                 // add a preference observer to monitor changes
                 pb2.addObserver("calendar.", this.mPrefObserver, false);
                 return;
@@ -100,6 +104,15 @@
                        this.calView.goToDay(this.calView.selectedDay);
                        break;
 
+                   case "calendar.weeks.inview":
+                       this.calView.weeksInView = subj.getIntPref(pref);
+                       break;
+
+                   case "calendar.previousweeks.inview":
+                       // Just refresh, the goToDay function will notice
+                       this.calView.goToDay(this.calView.selectedDay);
+                       break;
+
                    default:
                        break;
                    }

calendar/resources/content/pref/rootCalendarPref.js

@@ -72,15 +72,6 @@ calendarPrefObserver.prototype =
                   this.CalendarPreferences.calendarWindow.currentView.refresh();
                 }
                 break;
-            case "calendar.weeks.inview":
-                if (this.CalendarPreferences.calendarWindow.multiweekView != null) {
-                  //changeNumberOfWeeks expects an element with attribute 'value'
-                  var newWeeks = document.createElement( "textbox" );
-                  newWeeks.setAttribute("value", subject.getIntPref( prefName ) );
-                  this.CalendarPreferences.calendarWindow.multiweekView
-                         .changeNumberOfWeeks(newWeeks);
-                }
-                break;
             case "calendar.week.start":
                 if (this.CalendarPreferences.calendarWindow.currentView != null) {
                   this.CalendarPreferences.calendarWindow.currentView.refresh();