refactor 3-more into separate books

2015-02-27 13:21:58 +03:00 · 2015-02-27 13:21:58 +03:00 · 87639b2740
commit 87639b2740
parent bd1d5e4305
423 changed files with 9 additions and 9 deletions
--- a/4-ajax/12-ajax-iframe/date-activex.view/activex.js
+++ b/4-ajax/12-ajax-iframe/date-activex.view/activex.js
@ -0,0 +1,37 @@
+var CallbackRegistry = {}; // реестр
+
+function iframeActiveXGet(url, onSuccess, onError) {
+
+  var iframeOk = false;
+
+  var iframeName = Math.random();
+  var iframe = createActiveXFrame(iframeName, url);
+  
+  CallbackRegistry[iframeName] = function(data) {
+    iframeOk = true;  
+    onSuccess(data);
+  }
+
+  iframe.onload = function() { 
+    iframe.parentNode.removeChild(iframe); // очистка
+    delete CallbackRegistry[iframeName];   
+    if (!iframeOk) onError(); // если коллбэк не вызвался - что-то не так
+  }
+
+}
+
+
+function createActiveXFrame(name, src) {
+  var htmlfile = window.htmlfile;
+  if (!htmlfile) {
+    htmlfile = window.htmlfile = new ActiveXObject("htmlfile");
+    htmlfile.open();
+    htmlfile.write("<html><body></body></html>");
+    htmlfile.close();
+    htmlfile.parentWindow.CallbackRegistry = CallbackRegistry;
+  }
+
+  src = src || 'javascript:false'; // пустой src  
+  htmlfile.body.insertAdjacentHTML('beforeEnd', "<iframe name='"+name+"' src='"+src+"'></iframe>");
+  return htmlfile.body.lastChild; // window in .document.parentWindow
+}