add Ox.LoadingScreen and Ox.ImageElement, update CSS

source/Ox.UI/js/Core/ImageElement.js

@@ -0,0 +1,54 @@
+'use strict';
+
+Ox.ImageElement = function(options, self) {
+
+    self = self || {};
+    var that = Ox.Element({}, self)
+        .defaults({
+            height: 0,
+            src: '',
+            width: 0
+        })
+        .options(options || {})
+        .update({
+            height: setSizes,
+            src: loadImage,
+            width: setSizes
+        })
+        .addClass('OxImageElement');
+
+    self.$screen = Ox.LoadingScreen({size: 16}).appendTo(that);
+
+    loadImage();
+    setSizes();
+
+    function loadImage() {
+        if (self.$image) {
+            self.$image.off({load: showImage}).remove();
+        }
+        self.$image = $('<img>')
+            .one({load: showImage})
+            .attr({src: self.options.src});
+    }
+
+    function setSizes() {
+        var css = {
+            width: self.options.width,
+            height: self.options.height
+        };
+        self.$screen && self.$screen.options(css);
+        css = Ox.map(css, function(value) {
+            return value + 'px';
+        });
+        that.css(css);
+        self.$image.css(css);
+    }
+
+    function showImage() {
+        self.$screen.remove();
+        self.$image.appendTo(that);
+    }
+
+    return that;
+
+};

source/Ox.UI/js/Core/LoadingScreen.js

@@ -0,0 +1,60 @@
+'use strict';
+
+Ox.LoadingScreen = function(options, self) {
+
+    self = self || {};
+    var that = Ox.Element({}, self)
+        .defaults({
+            height: 256,
+            size: 32,
+            text: '',
+            width: 256
+        })
+        .options(options || {})
+        .update({
+            height: setSizes,
+            text: function() {
+                self.$text && self.$text.html(self.options.text);
+            },
+            width: setSizes
+        })
+        .addClass('OxLoadingScreen');
+
+    self.$box = $('<div>').appendTo(that);
+
+    setSizes();
+
+    $('<img>')
+        .attr({src: Ox.UI.getImageURL('symbolLoadingAnimated')})
+        .css({
+            width: self.options.size + 'px',
+            height: self.options.size + 'px'
+        })
+        .appendTo(self.$box);
+
+    if (self.options.text) {
+        self.$text = $('<div>')
+            .html(self.options.text)
+            .appendTo(self.$box);
+    }
+
+    function setSizes() {
+        var css = {
+            width: (self.options.text ? 256 : self.options.size),
+            height: self.options.size + (self.options.text ? 24 : 0)
+        };
+        css.left = Math.floor((self.options.width - css.width) / 2);
+        css.top = Math.floor((self.options.height - css.height) / 2);
+        css = Ox.map(css, function(value) {
+            return value + 'px';
+        });
+        that.css({
+            width: self.options.width + 'px',
+            height: self.options.height + 'px'
+        });
+        self.$box.css(css);
+    }
+
+    return that;
+
+};