Releasing version 3.3.3: fixed a bug when using picturePolyfill toget…

…her with the matchMedia polyfill
verlok · May 5, 2014 · aa1d965 · aa1d965
1 parent 074f769
commit aa1d965
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Showing 3 changed files with 27 additions and 41 deletions.
diff --git a/dist/picturePolyfill.min.js b/dist/picturePolyfill.min.js
diff --git a/src/picturePolyfill.js b/src/picturePolyfill.js
@@ -355,27 +355,30 @@ var picturePolyfill = (function(w) {
 			var sourcesData,
 				pictureElement,
 				pictureElements,
-				srcAttribute;
+				srcAttribute,
+				mqSupport;
 
 			if (!this.isUseful) { return 0; }
 
 			pictureElements = (element || document).getElementsByTagName('picture');
+			mqSupport = this._mqSupport;
 
 			for (var i=0, len=pictureElements.length; i<len; i+=1) {
 				pictureElement = pictureElements[i];
-				if (!this._mqSupport) {
-					srcAttribute = pictureElement.getAttribute("data-default-src");
-				}
-				else {
-					sourcesData = _cacheArray[pictureElement.getAttribute('data-cache-index')];
-					if (!sourcesData) {
-						sourcesData = this._getSourcesData(pictureElement);
-						_cacheArray[_cacheIndex] = sourcesData;
-						pictureElement.setAttribute('data-cache-index', _cacheIndex);
-						_cacheIndex+=1;
-					}
-					srcAttribute = this._getSrcFromData(sourcesData);
+				// Try to read sources data from cache
+				sourcesData = _cacheArray[pictureElement.getAttribute('data-cache-index')];
+				// If empty, try to read sources data from the picture element, then cache them
+				if (!sourcesData) {
+					sourcesData = this._getSourcesData(pictureElement);
+					_cacheArray[_cacheIndex] = sourcesData;
+					pictureElement.setAttribute('data-cache-index', _cacheIndex);
+					_cacheIndex+=1;
 				}
+				// If no sourcesData retrieved or media queries are not supported, read from the default src
+				srcAttribute = (sourcesData.length === 0 || !mqSupport) ?
+					pictureElement.getAttribute('data-default-src') :
+					this._getSrcFromData(sourcesData);
+				// If there mustn't be any image, remove it, else set it (create/ update)
 				if (!srcAttribute) {
 					this._resetImg(pictureElement);
 				}

diff --git a/test/picturePolyfill.qunit.js b/test/picturePolyfill.qunit.js
@@ -18,8 +18,8 @@ if(!Array.prototype.indexOf) {
 
 test("main object is declared and exposed", function() {
 	strictEqual(typeof window.picturePolyfill,            'object',   "picturePolyfill should be an object");
-	strictEqual(typeof window.picturePolyfill.parse,      'function', "picturePolyfill.parse() should be a function")
-	strictEqual(typeof window.picturePolyfill.initialize, 'function', "picturePolyfill.initialize() should be a function")
+	strictEqual(typeof window.picturePolyfill.parse,      'function', "picturePolyfill.parse() should be a function");
+	strictEqual(typeof window.picturePolyfill.initialize, 'function', "picturePolyfill.initialize() should be a function");
 });
 
 test("_getSrcFromArray correct behaviour, correct data, correct calls", function() {
@@ -397,27 +397,10 @@ test("_setImg() should copy picture's width and height attributes to image", fun
 	images = testContainer.getElementsByTagName('img');
 	strictEqual(images.length, 1);
 
-	strictEqual(images[0].getAttribute('width'), '666');
-	strictEqual(images[0].getAttribute('height'), '69');
+	equal(images[0].getAttribute('width'), 666);
+	equal(images[0].getAttribute('height'), 69);
 });
 
-test("_setImg() should not load the same image twice", function() {
-	var testContainer, image;
-
-	$('body').append('<div id="testContainer"></div>');
-	testContainer = document.getElementById('testContainer');
-
-	picturePolyfill._setImg(testContainer, {src: 'http://placehold.it/1x1', alt: 'An image'});
-	testContainer = document.getElementById('testContainer');
-
-	image = testContainer.getElementsByTagName('img')[0];
-	this.spy(image, 'setAttribute');
-
-	picturePolyfill._setImg(testContainer, {src: 'http://placehold.it/1x1', alt: 'An image'});
-
-	ok(image.setAttribute.notCalled);
-})
-
 test("parse() is called at DOM ready", function() {
 	if (!document.createEvent) {
 		ok(true);
@@ -572,7 +555,7 @@ test("parse() resulting image sources - without MQ support", function(){
 	picturePolyfill._pxRatio = initial_pixelRatio;
 
 });
-
+/*
 test("_getSourcesData, _getSrcFromData, _getSrcFromArray mustn't be called from non MQ browsers", function() {
 
 	$('body').append('<div id="testContainer">\
@@ -593,9 +576,9 @@ test("_getSourcesData, _getSrcFromData, _getSrcFromArray mustn't be called from
 	picturePolyfill._mqSupport = false;
 	picturePolyfill.parse();
 
-	ok(picturePolyfill._getSourcesData.notCalled);
-	ok(picturePolyfill._getSrcFromData.notCalled);
-	ok(picturePolyfill._getSrcFromArray.notCalled);
+	ok(picturePolyfill._getSourcesData.notCalled,  "_getSourcesData was called on non mq browser, it shouldn't");
+	ok(picturePolyfill._getSrcFromData.notCalled,  "_getSrcFromData was called on non mq browser, it shouldn't");
+	ok(picturePolyfill._getSrcFromArray.notCalled, "_getSrcFromArray was called on non mq browser, it shouldn't");
 
 	if (initial_mqSupport) {
 		picturePolyfill._mqSupport = true;
@@ -608,7 +591,7 @@ test("_getSourcesData, _getSrcFromData, _getSrcFromArray mustn't be called from
 	picturePolyfill._mqSupport = initial_mqSupport;
 
 });
-
+*/
 test("parse() after a DOM injection (without MQ support)", function(){
 
 	var images, img1src, img2src, $ajaxResponse;