Changeset 26966 for main/trunk/greenstone3/web/interfaces/default/js/visual-xml-editor.js

Timestamp:

2013-02-26T16:39:06+13:00 (11 years ago)

Author:

sjm84

Message:

Implemented undo functionality

File:

• main/trunk/greenstone3/web/interfaces/default/js/visual-xml-editor.js (modified) (9 diffs)

main/trunk/greenstone3/web/interfaces/default/js/visual-xml-editor.js

@@ -28 +28 @@
     _overList.freeSpaces = new Array();
     
+    var _transactions = new Array();
+    
     this.getXML = function()
     {
         return _xml;
+    }
+    
+    this.undo = function()
+    {
+        if(_transactions.length > 0)
+        {
+            var t = _transactions.pop();
+            //Undo an added element
+            if(t.type == "addElem")
+            {
+                $(t.vElem.data("parentVEElement").getXMLNode()).remove();
+                t.vElem.remove();
+                resizeAll();
+            }
+            //Undo a removed or moved element
+            else if(t.type == "remMvElem")
+            {
+                var parent = t.vElemParent;
+                var pos = t.vElemPos;
+                var elem = t.vElem;
+                if(pos == 0)
+                {
+                    parent.prepend(elem);
+                    $(parent.parent().data("parentVEElement").getXMLNode()).prepend(elem.data("parentVEElement").getXMLNode());
+                }
+                else if(pos == parent.children(".veElement").length - 1)
+                {
+                    parent.children(".veElement").eq(pos - 1).after(elem);
+                    $(parent.children(".veElement").eq(pos - 1).data("parentVEElement").getXMLNode()).after(elem.data("parentVEElement").getXMLNode());
+                }
+                else
+                {
+                    parent.children(".veElement").eq(pos).before(elem);
+                    $(parent.children(".veElement").eq(pos).data("parentVEElement").getXMLNode()).before(elem.data("parentVEElement").getXMLNode());
+                }
+                resizeAll();
+            }
+            //Undo an added attribute
+            else if(t.type == "addAttr")
+            {
+                if(t.row)
+                {
+                    t.row.remove();
+                }
+            }
+            //Undo a removed or edited attribute
+            else if(t.type == "editAttr")
+            {
+                t.elem.removeAttribute(t.newName);
+                t.elem.setAttribute(t.name, t.value);
+                if(t.row)
+                {
+                    t.row.children("td").eq(0).text(t.name);
+                    t.row.children("td").eq(1).text(t.value);
+                }
+            }
+            //Undo a removed or edited attribute
+            else if(t.type == "remAttr")
+            {
+                t.elem.setAttribute(t.name, t.value);
+                if(t.rowParent)
+                {
+                    t.rowParent.append(t.row);
+                }
+            }
+            //Undo edited text
+            else if(t.type == "editText")
+            {
+                t.elem.nodeValue = t.value;
+                if(t.vElem)
+                {
+                    t.vElem.text(t.value);
+                }
+            }
+        }
     }
     
@@ -391 +468 @@
             link.click(function()
             {
-                var nameCell = cell.parent().children("td").eq(0);
-                var valueCell = cell.parent().children("td").eq(1);
+                var nameCell = _row.children("td").eq(0);
+                var valueCell = _row.children("td").eq(1);
                 if(link.text() == "edit")
                 {
@@ -433 +510 @@
                     _xmlElem.setAttribute(name, value);
                     
+                    _transactions.push({type:"editAttr", elem:_xmlElem, row:_row, newName:name, name:_name, value:_value});
+                    
                     _name = name;
                     _value = value;
@@ -447 +526 @@
             link.click(function()
             {
+                _transactions.push({type:"remAttr", elem:_xmlElem, row:_row, rowParent:_row.parent(), name:_name, value:_value});
                 _xmlElem.removeAttribute(_name);
-                _row.remove();
+                _row.detach();  
             });
             cell.append(link);
@@ -609 +689 @@
                 "stop":function(event, ui)
                 {
+                    var transactionType = (_div.data("toolbar")) ? "addElem" : "remMvElem";
                     _div.data("dragging", false);
                     _div.data("toolbar", false);
@@ -649 +730 @@
                             $(xmlNode).append(_xmlNode);
                         }
+                        _transactions.push({type:transactionType, vElemParent:_origDDParent, vElemPos:_origDDPosition, vElem:_div});
                     }
                 }
@@ -726 +808 @@
                 {
                     var newAtt = new VEAttribute(null, _xmlNode, "", "");
-                    attributeTable.append(newAtt.getAsTableRow());
+                    var row = newAtt.getAsTableRow();
+                    attributeTable.append(row);
+                    _transactions.push({type:"addAttr", row:row})
                 });
                 _infoDiv.append(addButton);
@@ -748 +832 @@
                     if(editButton.text() == "edit text")
                     {
+                        nodeText.data("prevTextValue", nodeText.text());
                         var textArea = $("<textarea>");
                         textArea.val(nodeText.text());
@@ -756 +841 @@
                     else
                     {
+                        _transactions.push({type:"editText", elem:_xmlNode, vElem: nodeText, value:nodeText.data("prevTextValue")});
                         var textArea = nodeText.find("textarea");
                         var newValue = textArea.val();