Add a way to refresh calendars. bug 285018, r=shaver

calendar/base/public/calICalendar.idl

@@ -275,6 +275,14 @@ interface calICalendar : nsISupports
    * Whether or not alarms for this calendar should be suppressed.
    */
   attribute boolean suppressAlarms;
+
+
+  /**
+   * Refresh the datasource, and call the observers for any changes found.
+   * May call the onLoad function of the observers if the provider doesn't
+   * know the details of the changes.
+   */
+  void refresh();
 };
 
 /** 

calendar/providers/caldav/calDavCalendar.js

@@ -140,6 +140,10 @@ calDavCalendar.prototype = {
     get uri() { return this.mUri; },
     set uri(aUri) { this.mUri = aUri; },
 
+    refresh: function() {
+        throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
+    },
+
     // attribute boolean suppressAlarms;
     get suppressAlarms() { return false; },
     set suppressAlarms(aSuppressAlarms) { throw Components.results.NS_ERROR_NOT_IMPLEMENTED; },

calendar/providers/composite/calCompositeCalendar.js

@@ -292,6 +292,12 @@ calCompositeCalendar.prototype = {
         this.mObservers = this.mObservers.filter( function (v) { return v != aObserver; } );
     },
 
+    refresh: function() {
+        for each (cal in this.mCalendars) {
+            try { cal.refresh(); } catch (e) { }
+        }
+    },
+
     // void modifyItem( in calIItemBase aNewItem, in calIItemBase aOldItem, in calIOperationListener aListener );
     modifyItem: function (aNewItem, aOldItem, aListener) {
         if (aNewItem.calendar == null) {

calendar/providers/ics/calICSCalendar.js

@@ -111,13 +111,16 @@ calICSCalendar.prototype = {
     get uri() { return this.mUri },
     set uri(aUri) {
         this.mMemoryCalendar.uri = this.mUri;
+        this.mUri = aUri;
+        this.refresh();
+    },
+
+    refresh: function() {
         // Lock other changes to the item list.
         this.locked = true;
         // set to prevent writing after loading, without any changes
         this.loading = true;
 
-        this.mUri = aUri;
-        
         var ioService = Components.classes["@mozilla.org/network/io-service;1"]
                                   .getService(Components.interfaces.nsIIOService);
 

calendar/providers/memory/calMemoryCalendar.js

@@ -114,6 +114,11 @@ calMemoryCalendar.prototype = {
     get uri() { return this.mUri; },
     set uri(aURI) { this.mUri = aURI; },
 
+
+    refresh: function() {
+        // no-op
+    },
+
     // attribute boolean suppressAlarms;
     get suppressAlarms() { return false; },
     set suppressAlarms(aSuppressAlarms) { throw Components.results.NS_ERROR_NOT_IMPLEMENTED; },

calendar/providers/storage/calStorageCalendar.js

@@ -297,6 +297,10 @@ calStorageCalendar.prototype = {
         this.mURI = aURI;
     },
 
+    refresh: function() {
+        // no-op
+    },
+
     // attribute boolean readOnly;
     get readOnly() { return false; },
     set readOnly() { throw Components.results.NS_ERROR_NOT_IMPLEMENTED; },

calendar/resources/content/calendar.xul

@@ -118,7 +118,7 @@
   <command id="import_command" oncommand="loadEventsFromFile()"/>
   <command id="export_command" oncommand="saveEventsToFile(gCalendarWindow.EventSelection.selectedEvents)" disabled="true" disabledwhennoeventsselected="true"/>
 
-  <command id="reload_remote_calendars" oncommand="gCalendarWindow.calendarManager.refreshAllRemoteCalendars()"/>
+  <command id="reload_remote_calendars" oncommand="reloadCalendars()"/>
   <command id="publish_calendar" oncommand="publishEntireCalendar()"/>
   <command id="publish_events_command" oncommand="publishCalendarData()" disabled="true" disabledwhennoeventsselected="true"/>
 

calendar/resources/content/calendarManagement.js

@@ -230,3 +230,8 @@ function getDefaultCalendar()
    }
    return false;
 }
+
+function reloadCalendars()
+{
+    getDisplayComposite().refresh();
+}