First commit

hGameTest/node_modules/sockjs-client/lib/utils/iframe.js

@@ -0,0 +1,186 @@
+'use strict';
+
+var eventUtils = require('./event')
+  , JSON3 = require('json3')
+  , browser = require('./browser')
+  ;
+
+var debug = function() {};
+if (process.env.NODE_ENV !== 'production') {
+  debug = require('debug')('sockjs-client:utils:iframe');
+}
+
+module.exports = {
+  WPrefix: '_jp'
+, currentWindowId: null
+
+, polluteGlobalNamespace: function() {
+    if (!(module.exports.WPrefix in global)) {
+      global[module.exports.WPrefix] = {};
+    }
+  }
+
+, postMessage: function(type, data) {
+    if (global.parent !== global) {
+      global.parent.postMessage(JSON3.stringify({
+        windowId: module.exports.currentWindowId
+      , type: type
+      , data: data || ''
+      }), '*');
+    } else {
+      debug('Cannot postMessage, no parent window.', type, data);
+    }
+  }
+
+, createIframe: function(iframeUrl, errorCallback) {
+    var iframe = global.document.createElement('iframe');
+    var tref, unloadRef;
+    var unattach = function() {
+      debug('unattach');
+      clearTimeout(tref);
+      // Explorer had problems with that.
+      try {
+        iframe.onload = null;
+      } catch (x) {
+        // intentionally empty
+      }
+      iframe.onerror = null;
+    };
+    var cleanup = function() {
+      debug('cleanup');
+      if (iframe) {
+        unattach();
+        // This timeout makes chrome fire onbeforeunload event
+        // within iframe. Without the timeout it goes straight to
+        // onunload.
+        setTimeout(function() {
+          if (iframe) {
+            iframe.parentNode.removeChild(iframe);
+          }
+          iframe = null;
+        }, 0);
+        eventUtils.unloadDel(unloadRef);
+      }
+    };
+    var onerror = function(err) {
+      debug('onerror', err);
+      if (iframe) {
+        cleanup();
+        errorCallback(err);
+      }
+    };
+    var post = function(msg, origin) {
+      debug('post', msg, origin);
+      setTimeout(function() {
+        try {
+          // When the iframe is not loaded, IE raises an exception
+          // on 'contentWindow'.
+          if (iframe && iframe.contentWindow) {
+            iframe.contentWindow.postMessage(msg, origin);
+          }
+        } catch (x) {
+          // intentionally empty
+        }
+      }, 0);
+    };
+
+    iframe.src = iframeUrl;
+    iframe.style.display = 'none';
+    iframe.style.position = 'absolute';
+    iframe.onerror = function() {
+      onerror('onerror');
+    };
+    iframe.onload = function() {
+      debug('onload');
+      // `onload` is triggered before scripts on the iframe are
+      // executed. Give it few seconds to actually load stuff.
+      clearTimeout(tref);
+      tref = setTimeout(function() {
+        onerror('onload timeout');
+      }, 2000);
+    };
+    global.document.body.appendChild(iframe);
+    tref = setTimeout(function() {
+      onerror('timeout');
+    }, 15000);
+    unloadRef = eventUtils.unloadAdd(cleanup);
+    return {
+      post: post
+    , cleanup: cleanup
+    , loaded: unattach
+    };
+  }
+
+/* eslint no-undef: "off", new-cap: "off" */
+, createHtmlfile: function(iframeUrl, errorCallback) {
+    var axo = ['Active'].concat('Object').join('X');
+    var doc = new global[axo]('htmlfile');
+    var tref, unloadRef;
+    var iframe;
+    var unattach = function() {
+      clearTimeout(tref);
+      iframe.onerror = null;
+    };
+    var cleanup = function() {
+      if (doc) {
+        unattach();
+        eventUtils.unloadDel(unloadRef);
+        iframe.parentNode.removeChild(iframe);
+        iframe = doc = null;
+        CollectGarbage();
+      }
+    };
+    var onerror = function(r) {
+      debug('onerror', r);
+      if (doc) {
+        cleanup();
+        errorCallback(r);
+      }
+    };
+    var post = function(msg, origin) {
+      try {
+        // When the iframe is not loaded, IE raises an exception
+        // on 'contentWindow'.
+        setTimeout(function() {
+          if (iframe && iframe.contentWindow) {
+              iframe.contentWindow.postMessage(msg, origin);
+          }
+        }, 0);
+      } catch (x) {
+        // intentionally empty
+      }
+    };
+
+    doc.open();
+    doc.write('<html><s' + 'cript>' +
+              'document.domain="' + global.document.domain + '";' +
+              '</s' + 'cript></html>');
+    doc.close();
+    doc.parentWindow[module.exports.WPrefix] = global[module.exports.WPrefix];
+    var c = doc.createElement('div');
+    doc.body.appendChild(c);
+    iframe = doc.createElement('iframe');
+    c.appendChild(iframe);
+    iframe.src = iframeUrl;
+    iframe.onerror = function() {
+      onerror('onerror');
+    };
+    tref = setTimeout(function() {
+      onerror('timeout');
+    }, 15000);
+    unloadRef = eventUtils.unloadAdd(cleanup);
+    return {
+      post: post
+    , cleanup: cleanup
+    , loaded: unattach
+    };
+  }
+};
+
+module.exports.iframeEnabled = false;
+if (global.document) {
+  // postMessage misbehaves in konqueror 4.6.5 - the messages are delivered with
+  // huge delay, or not at all.
+  module.exports.iframeEnabled = (typeof global.postMessage === 'function' ||
+    typeof global.postMessage === 'object') && (!browser.isKonqueror());
+}