More JSLint

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2642 eee81c28-f429-11dd-99c0-75d572ba1ddd

editor/path.js

@@ -1,3 +1,5 @@
+/*globals $, svgedit, svgroot*/
+/*jslint vars: true, eqeq: true, continue: true*/
 /**
  * Package: svgedit.path
  *
@@ -13,7 +15,7 @@
 // 3) math.js
 // 4) svgutils.js
 
-(function() {
+(function() {'use strict';
 
 if (!svgedit.path) {
 	svgedit.path = {};
@@ -75,12 +77,13 @@ svgedit.path.insertItemBefore = function(elem, newseg, index) {
 	}
 	var len = list.numberOfItems;
 	var arr = [];
-	for (var i=0; i<len; i++) {
+	var i;
+	for (i=0; i < len; i++) {
 		var cur_seg = list.getItem(i);
 		arr.push(cur_seg);
 	}
 	list.clear();
-	for (var i=0; i<len; i++) {
+	for (i=0; i < len; i++) {
 		if (i == index) { //index+1
 			list.appendItem(newseg);
 		}
@@ -92,7 +95,8 @@ svgedit.path.insertItemBefore = function(elem, newseg, index) {
 svgedit.path.ptObjToArr = function(type, seg_item) {
 	var arr = segData[type], len = arr.length;
 	var out = Array(len);
-	for (var i=0; i<len; i++) {
+	var i;
+	for (i = 0; i < len; i++) {
 		out[i] = seg_item[arr[i]];
 	}
 	return out;
@@ -122,7 +126,7 @@ svgedit.path.getPointFromGrip = function(pt, path) {
 	};
 
 	if (path.matrix) {
-		var pt = svgedit.math.transformPoint(out.x, out.y, path.imatrix);
+		pt = svgedit.math.transformPoint(out.x, out.y, path.imatrix);
 		out.x = pt.x;
 		out.y = pt.y;
 	}
@@ -156,7 +160,9 @@ svgedit.path.addPointGrip = function(index, x, y) {
 
 		var grip = $('#pathpointgrip_'+index);
 		grip.dblclick(function() {
-			if (svgedit.path.path) svgedit.path.path.setSegType();
+			if (svgedit.path.path) {
+				svgedit.path.path.setSegType();
+			}
 		});
 	}
 	if (x && y) {
@@ -182,7 +188,7 @@ svgedit.path.getGripContainer = function() {
 
 svgedit.path.addCtrlGrip = function(id) {
 	var pointGrip = svgedit.utilities.getElem('ctrlpointgrip_'+id);
-	if (pointGrip) return pointGrip;
+	if (pointGrip) {return pointGrip;}
 
 	pointGrip = document.createElementNS(NS.SVG, 'circle');
 	svgedit.utilities.assignAttributes(pointGrip, {
@@ -202,7 +208,7 @@ svgedit.path.addCtrlGrip = function(id) {
 
 svgedit.path.getCtrlLine = function(id) {
 	var ctrlLine = svgedit.utilities.getElem('ctrlLine_'+id);
-	if (ctrlLine) return ctrlLine;
+	if (ctrlLine) {return ctrlLine;}
 
 	ctrlLine = document.createElementNS(NS.SVG, 'line');
 	svgedit.utilities.assignAttributes(ctrlLine, {
@@ -234,7 +240,7 @@ svgedit.path.getPointGrip = function(seg, update) {
 svgedit.path.getControlPoints = function(seg) {
 	var item = seg.item;
 	var index = seg.index;
-	if (!('x1' in item) || !('x2' in item)) return null;
+	if (!('x1' in item) || !('x2' in item)) {return null;}
 	var cpt = {};
 	var pointGripContainer = svgedit.path.getGripContainer();
 
@@ -243,7 +249,8 @@ svgedit.path.getControlPoints = function(seg) {
 
 	var seg_items = [prev, item];
 
-	for (var i=1; i<3; i++) {
+	var i;
+	for (i = 1; i < 3; i++) {
 		var id = index + 'c' + i;
 
 		var ctrlLine = cpt['c' + i + '_line'] = svgedit.path.getCtrlLine(id);
@@ -286,12 +293,13 @@ svgedit.path.replacePathSeg = function(type, index, pts, elem) {
 		var segList = path.pathSegList;
 		var len = segList.numberOfItems;
 		var arr = [];
-		for (var i=0; i<len; i++) {
+		var i;
+		for (i = 0; i < len; i++) {
 			var cur_seg = segList.getItem(i);
 			arr.push(cur_seg);
 		}
 		segList.clear();
-		for (var i=0; i<len; i++) {
+		for (i = 0; i < len; i++) {
 			if (i == index) {
 				segList.appendItem(seg);
 			} else {
@@ -332,8 +340,9 @@ svgedit.path.getSegSelector = function(seg, update) {
 		svgedit.path.replacePathSeg(2, 0, [pt.x, pt.y], segLine);
 
 		var pts = svgedit.path.ptObjToArr(seg.type, seg.item, true);
-		for (var i=0; i < pts.length; i+=2) {
+		var i;
-			var pt = svgedit.path.getGripPt(seg, {x:pts[i], y:pts[i+1]});
+		for (i = 0; i < pts.length; i += 2) {
+			pt = svgedit.path.getGripPt(seg, {x:pts[i], y:pts[i+1]});
 			pts[i] = pt.x;
 			pts[i+1] = pt.y;
 		}
@@ -406,7 +415,8 @@ svgedit.path.Segment = function(index, item) {
 };
 
 svgedit.path.Segment.prototype.showCtrlPts = function(y) {
-	for (var i in this.ctrlpts) {
+	var i;
+	for (i in this.ctrlpts) {
 		this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');
 	}
 };
@@ -484,14 +494,14 @@ svgedit.path.Segment.prototype.move = function(dx, dy) {
 	if (this.mate) {
 		// The last point of a closed subpath has a 'mate',
 		// which is the 'M' segment of the subpath
-		var item = this.mate.item;
+		item = this.mate.item;
 		var pts = [item.x += dx, item.y += dy];
 		svgedit.path.replacePathSeg(this.mate.type, this.mate.index, pts);
 		// Has no grip, so does not need 'updating'?
 	}
 
 	this.update(true);
-	if (this.next) this.next.update(true);
+	if (this.next) {this.next.update(true);}
 };
 
 svgedit.path.Segment.prototype.setLinked = function(num) {
@@ -499,12 +509,12 @@ svgedit.path.Segment.prototype.setLinked = function(num) {
 	if (num == 2) {
 		anum = 1;
 		seg = this.next;
-		if (!seg) return;
+		if (!seg) {return;}
 		pt = this.item;
 	} else {
 		anum = 2;
 		seg = this.prev;
-		if (!seg) return;
+		if (!seg) {return;}
 		pt = seg.item;
 	}
 
@@ -566,7 +576,8 @@ svgedit.path.Path.prototype.init = function() {
 	this.first_seg = null;
 
 	// Set up segs array
-	for (var i=0; i < len; i++) {
+	var i;
+	for (i = 0; i < len; i++) {
 		var item = segList.getItem(i);
 		var segment = new svgedit.path.Segment(i, item);
 		segment.path = this;
@@ -576,16 +587,16 @@ svgedit.path.Path.prototype.init = function() {
 	var segs = this.segs;
 	var start_i = null;
 
-	for (var i=0; i < len; i++) {
+	for (i = 0; i < len; i++) {
 		var seg = segs[i];
 		var next_seg = (i+1) >= len ? null : segs[i+1];
 		var prev_seg = (i-1) < 0 ? null : segs[i-1];
-
+		var start_seg;
 		if (seg.type === 2) {
 			if (prev_seg && prev_seg.type !== 1) {
 				// New sub-path, last one is open,
 				// so add a grip to last sub-path's first point
-				var start_seg = segs[start_i];
+				start_seg = segs[start_i];
 				start_seg.next = segs[start_i+1];
 				start_seg.next.prev = start_seg;
 				start_seg.addGrip();
@@ -608,7 +619,7 @@ svgedit.path.Path.prototype.init = function() {
 			if (seg.type !== 1) {
 				// Last seg, doesn't close so add a grip
 				// to last sub-path's first point
-				var start_seg = segs[start_i];
+				start_seg = segs[start_i];
 				start_seg.next = segs[start_i+1];
 				start_seg.next.prev = start_seg;
 				start_seg.addGrip();
@@ -634,17 +645,18 @@ svgedit.path.Path.prototype.init = function() {
 };
 
 svgedit.path.Path.prototype.eachSeg = function(fn) {
+	var i;
 	var len = this.segs.length;
-	for (var i=0; i < len; i++) {
+	for (i = 0; i < len; i++) {
 		var ret = fn.call(this.segs[i], i);
-		if (ret === false) break;
+		if (ret === false) {break;}
 	}
 };
 
 svgedit.path.Path.prototype.addSeg = function(index) {
 	// Adds a new segment
 	var seg = this.segs[index];
-	if (!seg.prev) return;
+	if (!seg.prev) {return;}
 
 	var prev = seg.prev;
 	var newseg;
@@ -683,9 +695,10 @@ svgedit.path.Path.prototype.deleteSeg = function(index) {
 
 	seg.show(false);
 	var next = seg.next;
+	var pt;
 	if (seg.mate) {
 		// Make the next point be the "M" point
-		var pt = [next.item.x, next.item.y];
+		pt = [next.item.x, next.item.y];
 		svgedit.path.replacePathSeg(2, next.index, pt);
 
 		// Reposition last node
@@ -695,7 +708,7 @@ svgedit.path.Path.prototype.deleteSeg = function(index) {
 	} else if (!seg.prev) {
 		// First node of open path, make next point the M
 		var item = seg.item;
-		var pt = [next.item.x, next.item.y];
+		pt = [next.item.x, next.item.y];
 		svgedit.path.replacePathSeg(2, seg.next.index, pt);
 		list.removeItem(index);
 	} else {
@@ -707,7 +720,7 @@ svgedit.path.Path.prototype.subpathIsClosed = function(index) {
 	var closed = false;
 	// Check if subpath is already open
 	svgedit.path.path.eachSeg(function(i) {
-		if (i <= index) return true;
+		if (i <= index) {return true;}
 		if (this.type === 2) {
 			// Found M first, so open
 			return false;
@@ -782,7 +795,7 @@ svgedit.path.Path.prototype.setSegType = function(new_type) {
 		// Selected seg
 		var cur = this.segs[sel_pt];
 		var prev = cur.prev;
-		if (!prev) continue;
+		if (!prev) {continue;}
 
 		if (!new_type) { // double-click, so just toggle
 			text = 'Toggle Path Segment Type';
@@ -877,12 +890,14 @@ svgedit.path.Path.prototype.update = function() {
 
 svgedit.path.getPath_ = function(elem) {
 	var p = pathData[elem.id];
-	if (!p) p = pathData[elem.id] = new svgedit.path.Path(elem);
+	if (!p) {
+		p = pathData[elem.id] = new svgedit.path.Path(elem);
+	}
 	return p;
 };
 
 svgedit.path.removePath_ = function(id) {
-	if (id in pathData) delete pathData[id];
+	if (id in pathData) {delete pathData[id];}
 };
 
 var getRotVals = function(x, y) {
@@ -919,7 +934,7 @@ var getRotVals = function(x, y) {
 svgedit.path.recalcRotatedPath = function() {
 	var current_path = svgedit.path.path.elem;
 	var angle = svgedit.utilities.getRotationAngle(current_path, true);
-	if (!angle) return;
+	if (!angle) {return;}
 //	selectedBBoxes[0] = svgedit.path.path.oldbbox;
 	var box = svgedit.utilities.getBBox(current_path),
 		oldbox = svgedit.path.path.oldbbox,//selectedBBoxes[0],
@@ -943,7 +958,7 @@ svgedit.path.recalcRotatedPath = function() {
 		i -= 1;
 		var seg = list.getItem(i),
 			type = seg.pathSegType;
-		if (type == 1) continue;
+		if (type == 1) {continue;}
 
 		var rvals = getRotVals(seg.x, seg.y),
 			points = [rvals.x, rvals.y];
@@ -973,4 +988,4 @@ svgedit.path.clearData =  function() {
 	pathData = {};
 };
 
-})();
+}());

editor/recalculate.js

@@ -1,3 +1,5 @@
+/*globals $*/
+/*jslint vars: true, eqeq: true, continue: true*/
 /**
  * Recalculate.
  *
@@ -63,7 +65,7 @@ svgedit.recalculate.updateClipPath = function(attr, tx, ty) {
 // Returns: 
 // Undo command object with the resulting change
 svgedit.recalculate.recalculateDimensions = function(selected) {
-  if (selected == null) return null;
+  if (selected == null) {return null;}
 
   // Firefox Issue - 1081
   if (selected.nodeName == "svg" && navigator.userAgent.indexOf("Firefox/20") >= 0) {
@@ -72,10 +74,10 @@ svgedit.recalculate.recalculateDimensions = function(selected) {
 
   var svgroot = context_.getSVGRoot();
   var tlist = svgedit.transformlist.getTransformList(selected);
-
+  var k;
   // remove any unnecessary transforms
   if (tlist && tlist.numberOfItems > 0) {
-    var k = tlist.numberOfItems;
+    k = tlist.numberOfItems;
     while (k--) {
       var xform = tlist.getItem(k);
       if (xform.type === 0) {
@@ -96,7 +98,7 @@ svgedit.recalculate.recalculateDimensions = function(selected) {
     }
     // End here if all it has is a rotation
     if (tlist.numberOfItems === 1 &&
-        svgedit.utilities.getRotationAngle(selected)) return null;
+        svgedit.utilities.getRotationAngle(selected)) {return null;}
   }
 
   // if this element had no transforms, we are done
@@ -109,7 +111,7 @@ svgedit.recalculate.recalculateDimensions = function(selected) {
 
   // TODO: Make this work for more than 2
   if (tlist) {
-    var k = tlist.numberOfItems;
+    k = tlist.numberOfItems;
     var mxs = [];
     while (k--) {
       var xform = tlist.getItem(k);
@@ -187,19 +189,20 @@ svgedit.recalculate.recalculateDimensions = function(selected) {
     case 'polygon':
     case 'polyline':
       initial = {};
-      initial['points'] = selected.getAttribute('points');
+      initial.points = selected.getAttribute('points');
       var list = selected.points;
       var len = list.numberOfItems;
-      changes['points'] = new Array(len);
+      changes.points = new Array(len);
-      for (var i = 0; i < len; ++i) {
+	  var i;
+      for (i = 0; i < len; ++i) {
         var pt = list.getItem(i);
-        changes['points'][i] = {x:pt.x, y:pt.y};
+        changes.points[i] = {x:pt.x, y:pt.y};
       }
       break;
     case 'path':
       initial = {};
-      initial['d'] = selected.getAttribute('d');
+      initial.d = selected.getAttribute('d');
-      changes['d'] = selected.getAttribute('d');
+      changes.d = selected.getAttribute('d');
       break;
     } // switch on element type to get initial values
 
@@ -246,7 +249,8 @@ svgedit.recalculate.recalculateDimensions = function(selected) {
         // FIXME: This blows up if the angle is exactly 0!
         var s = 2/a;
       }
-      for (var i = 0; i < tlist.numberOfItems; ++i) {
+	  var i;
+      for (i = 0; i < tlist.numberOfItems; ++i) {
         var xform = tlist.getItem(i);
         if (xform.type == 4) {
           // extract old center through mystical arts
@@ -288,7 +292,7 @@ svgedit.recalculate.recalculateDimensions = function(selected) {
           var childTlist = svgedit.transformlist.getTransformList(child);
 
           // some children might not have a transform (<metadata>, <defs>, etc)
-          if (!childTlist) continue;
+          if (!childTlist) {continue;}
 
           var m = svgedit.math.transformListToTransform(childTlist).matrix;
 
@@ -473,7 +477,7 @@ svgedit.recalculate.recalculateDimensions = function(selected) {
           context_.setStartTransform(child.getAttribute('transform'));
           var childTlist = svgedit.transformlist.getTransformList(child);
           
-          if (!childTlist) continue;
+          if (!childTlist) {continue;}
           
           var em = svgedit.math.matrixMultiply(m, svgedit.math.transformListToTransform(childTlist).matrix);
           var e2m = svgroot.createSVGTransform();

editor/sanitize.js

@@ -1,3 +1,5 @@
+/*globals $, svgedit*/
+/*jslint vars: true, eqeq: true*/
 /**
  * Package: svgedit.sanitize
  *
@@ -12,7 +14,7 @@
 // 2) browser.js
 // 3) svgutils.js
 
-(function() {
+(function() {'use strict';
 
 if (!svgedit.sanitize) {
   svgedit.sanitize = {};
@@ -138,12 +140,12 @@ svgedit.sanitize.sanitizeSvg = function(node) {
 
   var allowedAttrs = svgWhiteList_[node.nodeName];
   var allowedAttrsNS = svgWhiteListNS_[node.nodeName];
-
+  var i;
   // if this element is supported, sanitize it
   if (typeof allowedAttrs !== 'undefined') {
 
     var seAttrs = [];
-    var i = node.attributes.length;
+    i = node.attributes.length;
     while (i--) {
       // if the attribute is not in our whitelist, then remove it
       // could use jQuery's inArray(), but I don't know if that's any better
@@ -173,6 +175,7 @@ svgedit.sanitize.sanitizeSvg = function(node) {
         case 'patternTransform':
           var val = attr.nodeValue.replace(/(\d)-/g, '$1 -');
           node.setAttribute(attrName, val);
+          break;
         }
       }
 
@@ -202,8 +205,7 @@ svgedit.sanitize.sanitizeSvg = function(node) {
     var href = svgedit.utilities.getHref(node);
     if (href &&
       ['filter', 'linearGradient', 'pattern',
-      'radialGradient', 'textPath', 'use'].indexOf(node.nodeName) >= 0)
+      'radialGradient', 'textPath', 'use'].indexOf(node.nodeName) >= 0) {
-    {
       // TODO: we simply check if the first character is a #, is this bullet-proof?
       if (href[0] != '#') {
         // remove the attribute (but keep the element)
@@ -248,9 +250,9 @@ svgedit.sanitize.sanitizeSvg = function(node) {
     parent.removeChild(node);
 
     // call sanitizeSvg on each of those children
-    var i = children.length;
+    i = children.length;
     while (i--) { svgedit.sanitize.sanitizeSvg(children[i]); }
   }
 };
 
-})();
+}());

editor/select.js

@@ -1,3 +1,5 @@
+/*globals $, svgedit*/
+/*jslint vars: true, eqeq: true, forin: true*/
 /**
  * Package: svedit.select
  *
@@ -13,7 +15,7 @@
 // 3) math.js
 // 4) svgutils.js
 
-(function() {
+(function() {'use strict';
 
 if (!svgedit.select) {
 	svgedit.select = {};
@@ -96,10 +98,11 @@ svgedit.select.Selector.prototype.reset = function(e) {
 // Parameters:
 // angle - Float indicating current rotation angle in degrees
 svgedit.select.Selector.prototype.updateGripCursors = function(angle) {
-	var dir_arr = [];
+	var dir,
-	var steps = Math.round(angle / 45);
+		dir_arr = [],
-	if (steps < 0) steps += 8;
+		steps = Math.round(angle / 45);
-	for (var dir in selectorManager_.selectorGrips) {
+	if (steps < 0) {steps += 8;}
+	for (dir in selectorManager_.selectorGrips) {
 		dir_arr.push(dir);
 	}
 	while (steps > 0) {
@@ -107,7 +110,7 @@ svgedit.select.Selector.prototype.updateGripCursors = function(angle) {
 		steps--;
 	}
 	var i = 0;
-	for (var dir in selectorManager_.selectorGrips) {
+	for (dir in selectorManager_.selectorGrips) {
 		selectorManager_.selectorGrips[dir].setAttribute('style', ('cursor:' + dir_arr[i] + '-resize'));
 		i++;
 	}
@@ -169,7 +172,7 @@ svgedit.select.Selector.prototype.resize = function() {
 	}
 
 	// apply the transforms
-	var l = bbox.x, t = bbox.y, w = bbox.width, h = bbox.height,
+	var l = bbox.x, t = bbox.y, w = bbox.width, h = bbox.height;
 	bbox = {x:l, y:t, width:w, height:h};
 
 	// we need to handle temporary transforms too
@@ -206,12 +209,12 @@ svgedit.select.Selector.prototype.resize = function() {
 			maxx = tl.x,
 			maxy = tl.y;
 
-		var Min = Math.min, Max = Math.max;
+		var min = Math.min, max = Math.max;
 
-		minx = Min(minx, Min(nbox.tr.x, Min(nbox.bl.x, nbox.br.x) ) ) - offset;
+		minx = min(minx, min(nbox.tr.x, min(nbox.bl.x, nbox.br.x) ) ) - offset;
-		miny = Min(miny, Min(nbox.tr.y, Min(nbox.bl.y, nbox.br.y) ) ) - offset;
+		miny = min(miny, min(nbox.tr.y, min(nbox.bl.y, nbox.br.y) ) ) - offset;
-		maxx = Max(maxx, Max(nbox.tr.x, Max(nbox.bl.x, nbox.br.x) ) ) + offset;
+		maxx = max(maxx, max(nbox.tr.x, max(nbox.bl.x, nbox.br.x) ) ) + offset;
-		maxy = Max(maxy, Max(nbox.tr.y, Max(nbox.bl.y, nbox.br.y) ) ) + offset;
+		maxy = max(maxy, max(nbox.tr.y, max(nbox.bl.y, nbox.br.y) ) ) + offset;
 
 		nbax = minx;
 		nbay = miny;
@@ -241,8 +244,8 @@ svgedit.select.Selector.prototype.resize = function() {
 			'e':	[nbax + nbaw, nbay + (nbah)/2],
 			's':	[nbax + (nbaw)/2, nbay + nbah]
 		};
-
+		var dir;
-		for (var dir in this.gripCoords) {
+		for (dir in this.gripCoords) {
 			var coords = this.gripCoords[dir];
 			selectedGrips[dir].setAttribute('cx', coords[0]);
 			selectedGrips[dir].setAttribute('cy', coords[1]);
@@ -320,7 +323,8 @@ svgedit.select.SelectorManager.prototype.initGroup = function() {
 	this.rubberBandBox = null;
 
 	// add the corner grips
-	for (var dir in this.selectorGrips) {
+	var dir;
+	for (dir in this.selectorGrips) {
 		var grip = svgFactory_.createSVGElement({
 			'element': 'circle',
 			'attr': {
@@ -369,7 +373,7 @@ svgedit.select.SelectorManager.prototype.initGroup = function() {
 	);
 	$.data(this.rotateGrip, 'type', 'rotate');
 
-	if ($('#canvasBackground').length) return;
+	if ($('#canvasBackground').length) {return;}
 
 	var dims = config_.dimensions;
 	var canvasbg = svgFactory_.createSVGElement({
@@ -412,14 +416,15 @@ svgedit.select.SelectorManager.prototype.initGroup = function() {
 // Parameters:
 // elem - DOM element to get the selector for
 svgedit.select.SelectorManager.prototype.requestSelector = function(elem) {
-	if (elem == null) return null;
+	if (elem == null) {return null;}
-	var N = this.selectors.length;
+	var i,
+		N = this.selectors.length;
 	// If we've already acquired one for this element, return it.
 	if (typeof(this.selectorMap[elem.id]) == 'object') {
 		this.selectorMap[elem.id].locked = true;
 		return this.selectorMap[elem.id];
 	}
-	for (var i = 0; i < N; ++i) {
+	for (i = 0; i < N; ++i) {
 		if (this.selectors[i] && !this.selectors[i].locked) {
 			this.selectors[i].locked = true;
 			this.selectors[i].reset(elem);
@@ -440,10 +445,11 @@ svgedit.select.SelectorManager.prototype.requestSelector = function(elem) {
 // Parameters:
 // elem - DOM element to remove the selector for
 svgedit.select.SelectorManager.prototype.releaseSelector = function(elem) {
-	if (elem == null) return;
+	if (elem == null) {return;}
-	var N = this.selectors.length,
+	var i,
+		N = this.selectors.length,
 		sel = this.selectorMap[elem.id];
-	for (var i = 0; i < N; ++i) {
+	for (i = 0; i < N; ++i) {
 		if (this.selectors[i] && this.selectors[i] == sel) {
 			if (sel.locked == false) {
 				// TODO(codedread): Ensure this exists in this module.
@@ -525,4 +531,4 @@ svgedit.select.getSelectorManager = function() {
 	return selectorManager_;
 };
 
-})();
+}());

editor/svgedit.js

@@ -1,7 +1,8 @@
+/*globals $, svgedit*/
 /**
  *
  * Licensed under the MIT License
- * main object, loaded first so other modules have the garanty of its existence
+ * main object, loaded first so other modules have the guarantee of its existence
  */
 
 svgedit = {
@@ -18,7 +19,7 @@ svgedit = {
 };
 
 // return the svgedit.NS with key values switched and lowercase
-svgedit.getReverseNS = function() {
+svgedit.getReverseNS = function() {'use strict';
 	var reverseNS = {};
 	$.each(this.NS, function(name, URI) {
 		reverseNS[URI] = name.toLowerCase();