Gemini added delete undo functionality

datahandler.js

@@ -127,11 +127,16 @@ function addNewEntry(sEntry){
 	});
 }
 
+var lastDeletedEntry = null;
+
 function deleteEntry(sKey) {
 	db.objectStore("Entry").get(Number(sKey)).done( function(result,event){
+		lastDeletedEntry = result;
+		lastDeletedEntry.key = Number(sKey);
 		addToQ("DeleteEntry",result);
 		db.objectStore("Entry").delete(Number(sKey)).done( function(result,event){
-			deleteEntryFromUi(sKey)
+			deleteEntryFromUi(sKey);
+			showUndoButton();
 		}).fail( function (result, event){
 			console.log("[deleteEntry] Failed deleting List Item: " , result , event )
 		});
@@ -140,6 +145,20 @@ function deleteEntry(sKey) {
 	});
 }
 
+function undoDeleteEntry() {
+	if (lastDeletedEntry) {
+		db.objectStore("Entry").add({"Description":lastDeletedEntry.Description,"shopGlobalId":lastDeletedEntry.shopGlobalId }).done( function(result,event){
+			addToQ("SendEntry",result);
+			addEntryToUi(result,lastDeletedEntry.Description);
+			$("#lstEntries").listview("refresh");
+			lastDeletedEntry = null;
+			hideUndoButton();
+		}).fail( function (result, event){
+			console.log("Failed Inserting List Item: " , result, event )
+		});
+	}
+}
+
 
 function shopDeletion(shopGlobalId){
 	db.objectStore("Shop").delete(shopGlobalId)

index.html

@@ -129,6 +129,7 @@ $(document).bind('pageinit',function() {
 			<ul data-role="listview" id='lstEntries' data-filter="true"> <!-- filtering when entering value in add box... -->
 			</ul>
 			<div data-role="footer" data-id="foo1" data-position="fixed">
+				<a id="btnUndo" onclick="undoDeleteEntry()" style="display:none" data-role="button">Undo</a>
 			</div>
 		</div>
 		

uicontroler.js

@@ -302,3 +302,11 @@ function setMode(sMode){
 function updateTransferQCounter(){
 	db.objectStore("TransferQ").count().done(function (result) { changeButtonText("btnHeadingRight",result); });
 }
+
+function showUndoButton() {
+	$("#btnUndo").show();
+}
+
+function hideUndoButton() {
+	$("#btnUndo").hide();
+}