bug #369084 missing thunderbird integration for undo/redo r=lilmatt

calendar/base/content/calendar-item-editing.js

@@ -332,6 +332,7 @@ calTransaction.prototype = {
     mOldItem: null,
     mOldCalendar: null,
     mListener: null,
+    mIsDoTransaction: false,
 
     QueryInterface: function (aIID) {
         if (!aIID.equals(Components.interfaces.nsISupports) &&
@@ -348,7 +349,11 @@ calTransaction.prototype = {
             if (aOperationType == Components.interfaces.calIOperationListener.ADD ||
                 aOperationType ==Components.interfaces.calIOperationListener.MODIFY) {
                 // Add/Delete return the original item as detail for success
-                this.mItem = aDetail;
+                if (this.mIsDoTransaction) {
+                  this.mItem = aDetail;
+                } else {
+                  this.mOldItem = aDetail;
+                }
             }
         } else {
             Components.utils.reportError("Severe error in internal transaction code!\n" +
@@ -366,6 +371,7 @@ calTransaction.prototype = {
     },
 
     doTransaction: function () {
+        this.mIsDoTransaction = true;
         switch (this.mAction) {
             case 'add':
                 this.mCalendar.addItem(this.mItem, this);
@@ -385,6 +391,7 @@ calTransaction.prototype = {
         }
     },
     undoTransaction: function () {
+        this.mIsDoTransaction = false;
         switch (this.mAction) {
             case 'add':
                 this.mCalendar.deleteItem(this.mItem, this);

calendar/lightning/content/messenger-overlay-sidebar.js

@@ -51,6 +51,8 @@ var CalendarController =
       case "cmd_cut":
       case "cmd_copy":
       case "cmd_paste":
+      case "cmd_undo":
+      case "cmd_redo":
       case "cmd_print":
       case "cmd_printpreview":
         return true;
@@ -68,6 +70,22 @@ var CalendarController =
         return currentView().getSelectedItems({}).length != 0;
       case "cmd_paste":
         return canPaste();
+      case "cmd_undo":
+        if (this.isCalendarInForeground()) {
+          goSetMenuValue(command, 'valueDefault');
+          if (canUndo()) {
+            return true;
+          }
+        }
+        break;
+      case "cmd_redo":
+        if (this.isCalendarInForeground()) {
+          goSetMenuValue(command, 'valueDefault');
+          if(canRedo()) {
+            return true;
+          }
+        }
+        break;
       case "cmd_print":
         if (this.isCalendarInForeground()) {
           return true;
@@ -104,6 +122,16 @@ var CalendarController =
       case "cmd_paste":
         pasteFromClipboard();
         break;
+      case "cmd_undo":
+        if (this.isCalendarInForeground() && canUndo()) {
+          gTransactionMgr.undoTransaction();
+        }
+        break;
+      case "cmd_redo":
+        if (this.isCalendarInForeground() && canRedo()) {
+          gTransactionMgr.redoTransaction();
+        }
+        break;
       case "cmd_print":
         if (this.isCalendarInForeground()) {
           calPrint();