Merge pull request #250 from joseeight/Document

Montage components mapping & External data webGL support

1 files changed, 30 insertions, 2 deletions

diff --git a/assets/canvas-runtime.js b/assets/canvas-runtime.js
index eeafaab6..9bf22313 100644
--- a/assets/canvas-runtime.js
+++ b/assets/canvas-runtime.js
@@ -8,9 +8,37 @@ No rights, expressed or implied, whatsoever to this software are provided by Mot
 var NinjaCvsRt =  NinjaCvsRt || {};
 
 ///////////////////////////////////////////////////////////////////////
+//Loading webGL/canvas data on window load
+window.addEventListener('load', loadCanvasData, false);
+//Load data function (on document loaded)
+function loadCanvasData (e) {
+        //Cleaning up events
+        window.removeEventListener('load', loadCanvasData, false);
+    //Getting tag with data, MUST contain attribute
+    var xhr, tag = document.querySelectorAll(['script[data-ninja-canvas-lib]'])[0];
+        //Checking for data to be external file
+        if (tag.getAttribute('data-ninja-canvas-json') !== null) {
+                //Loading JSON data
+                xhr = new XMLHttpRequest();
+        xhr.open("GET", tag.getAttribute('data-ninja-canvas-json'), false);
+        xhr.send();
+                //Checking for data
+        if (xhr.readyState === 4) {
+                //Calling method to initialize all webGL/canvas(es)
+                        NinjaCvsRt.initWebGl(document.body, tag.getAttribute('data-ninja-canvas-libpath'), xhr.response);
+        } else {
+                //TODO: Add error for users
+        }
+        } else {//Data in document itself
+                //Calling method to initialize all webGL/canvas(es)
+                NinjaCvsRt.initWebGl(document.body, tag.getAttribute('data-ninja-canvas-libpath'), document.querySelectorAll(['script[data-ninja-canvas]'])[0].innerHTML);
+        }
+}
+
+///////////////////////////////////////////////////////////////////////
 //Loading webGL/canvas data
-NinjaCvsRt.initWebGl = function (rootElement, directory) {
-        var cvsDataMngr, ninjaWebGlData = JSON.parse((document.querySelectorAll(['script[data-ninja-webgl]'])[0].innerHTML.replace('(', '')).replace(')', ''));
+NinjaCvsRt.initWebGl = function (rootElement, directory, data) {
+        var cvsDataMngr, ninjaWebGlData = JSON.parse((data.replace('(', '')).replace(')', ''));
         if (ninjaWebGlData && ninjaWebGlData.data) {
                 for (var n=0; ninjaWebGlData.data[n]; n++) {
                         ninjaWebGlData.data[n] = unescape(ninjaWebGlData.data[n]);