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lumbar-loader-backbone.js
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lumbar-loader-backbone.js
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/*global Backbone, module */
module.exports.initBackboneLoader = function(loaderModule, failure) {
var lumbarLoader = (loaderModule || module.exports).loader;
// Setup backbone route loading
var handlers = {
routes: {}
};
var pendingModules = {};
for (var moduleName in lumbarLoader.map.modules) {
handlers['loader_' + moduleName] = (function(moduleName) {
return function() {
if (lumbarLoader.isLoaded(moduleName)) {
// The module didn't implement the proper route
failure && failure({type: 'missing-route', moduleName: moduleName}, moduleName);
return;
} else if (pendingModules[moduleName]) {
// Do not exec the backbone callback multiple times
return;
}
pendingModules[moduleName] = true;
lumbarLoader.loadModule(moduleName, function(err) {
pendingModules[moduleName] = false;
if (err) {
failure && failure(err, moduleName);
return;
}
// Reload with the new route
Backbone.history.loadUrl();
});
};
}(moduleName));
}
// For each route create a handler that will load the associated module on request
for (var route in lumbarLoader.map.routes) {
handlers.routes[route] = 'loader_' + lumbarLoader.map.routes[route];
}
return new (Backbone.Router.extend(handlers))();
};
// Automatically initialize the loader if everything is setup already
if (module.exports.loader && module.exports.loader.map && window.Backbone) {
module.exports.initBackboneLoader();
}