79 lines
2.7 KiB
JavaScript
79 lines
2.7 KiB
JavaScript
// <!-- from https://github.com/Gazler/Underscore-Template-Loader/blob/master/index.html -->
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// TODO Figure out how to initialize w/ static views from server (don't call .load but instead inject in django as strings)
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// so this only loads the lazily loaded ones.
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(function() {
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if (typeof window.templateLoader == 'function') return;
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var templateLoader = {
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templateVersion: "0.0.16",
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templates: {},
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loadRemoteTemplate: function(templateName, filename, callback) {
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if (!this.templates[templateName]) {
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var self = this;
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jQuery.ajax({url : filename,
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success : function(data) {
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self.addTemplate(templateName, data);
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self.saveLocalTemplates();
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callback(data);
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},
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error : function(xhdr, textStatus, errorThrown) {
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console.log(textStatus); },
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dataType : "html"
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})
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}
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else {
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callback(this.templates[templateName]);
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}
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},
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addTemplate: function(templateName, data) {
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// is there a reason this doesn't go ahead and compile the template? _.template(data)
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// I suppose localstorage use would still req raw string rather than compiled version, but that sd work
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// if it maintains a separate cache of uncompiled ones
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this.templates[templateName] = data;
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},
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localStorageAvailable: function() {
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try {
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// window.cachetemplates is global set in base.js to turn caching on/off
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return window.cachetemplates && 'localStorage' in window && window['localStorage'] !== null;
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} catch (e) {
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return false;
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}
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},
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saveLocalTemplates: function() {
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if (this.localStorageAvailable) {
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localStorage.setItem("templates", JSON.stringify(this.templates));
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localStorage.setItem("templateVersion", this.templateVersion);
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}
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},
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loadLocalTemplates: function() {
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if (this.localStorageAvailable) {
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var templateVersion = localStorage.getItem("templateVersion");
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if (templateVersion && templateVersion == this.templateVersion) {
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var templates = localStorage.getItem("templates");
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if (templates) {
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templates = JSON.parse(templates);
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for (var x in templates) {
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if (!this.templates[x]) {
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this.addTemplate(x, templates[x]);
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}
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}
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}
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}
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else {
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localStorage.removeItem("templates");
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localStorage.removeItem("templateVersion");
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}
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}
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}
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};
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templateLoader.loadLocalTemplates();
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window.templateLoader = templateLoader;
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})();
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