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/**
* This module allows passing require modules instances to
* embedded iframes in a page.
* For example, if a page has the "plugins" module initialized,
* it is important to use exactly the same "plugins" instance
* inside iframes as well. Otherwise, plugins cannot save any
* state.
*/
/**
* Instructs the require object that when a reqModuleName module
* needs to be loaded, that it iterates through the parents of the
* current window until it finds one who can execute "require"
* statements and asks it to perform require on reqModuleName.
*
* @params requireDefObj Require object which supports define
* statements. This object is accessible after loading require-kernel.
* @params reqModuleName Module name e.g. (ep_etherpad-lite/static/js/plugins)
*/
exports.getRequirementFromParent = function(requireDefObj, reqModuleName) {
// Force the 'undefinition' of the modules (if they already have been loaded).
delete (requireDefObj._definitions)[reqModuleName];
delete (requireDefObj._modules)[reqModuleName];
requireDefObj.define(reqModuleName, function(require, exports, module) {
var t = parent;
var max = 0; // make sure I don't go up more than 10 times
while (typeof(t) != "undefined") {
max++;
if (max==10)
break;
if (typeof(t.require) != "undefined") {
module.exports = t.require(reqModuleName);
return;
}
t = t.parent;
}
});
}
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