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chap02 -> Managing templates with koExternalTemplateEngine

chap2
Jason Zhu 2022-04-29 23:39:08 +10:00
parent fe598fc132
commit 5f833290b6
15 changed files with 332 additions and 52 deletions
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24
ko-cart/index.html
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@ -4,33 +4,29 @@
<title>KO Shopping Cart</title>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<div class="container-fluid">
<div class="row" data-bind="if: visibleCatalog">
<div
class="col-xs-12"
data-bind="template:{name:'header'}"
></div>
<div
class="col-xs-6"
data-bind="template:{name:'catalog'}"
></div>
<div class="col-xs-6 well hidden" data-bind="if: visibleCart">
<div class="col-xs-12" data-bind="template:{name:'header'}"></div>
<div class="col-xs-6" data-bind="template:{name:'catalog'}"></div>
<div class="col-xs-6" data-bind="if: visibleCart">
<div class="well" data-bind="template:{name:'cart'}"></div>
</div>
</div>
<div class="row" data-bind="if: visibleCart">
<!-- <div class="row" data-bind="ifnot: visibleCatalog">
<div data-bind="template:{name:'order'}"></div>
</div>
<div data-bind="template: {name:'add-to-catalog-modal'}"></div>
<div data-bind="template: {name:'finish-order-modal'}"></div>
<div data-bind="template: {name:'finish-order-modal'}"></div> -->
</div>
<!-- vendor library -->
<script type="text/javascript" src="js/jquery-2.1.1.min.js"></script>
<script type="text/javascript" src="js/bootstrap.js"></script>
<script type="text/javascript" src="js/knockout-3.2.0.js"></script>
<script type="text/javascript" src="js/vendors/jquery-2.1.1.min.js"></script>
<script type="text/javascript" src="js/vendors/bootstrap.js"></script>
<script type="text/javascript" src="js/vendors/knockout-3.2.0.js"></script>
<script type="text/javascript" src="js/vendors/koExternalTemplateEngine_all.js"></script>
<!-- app -->
<script type="text/javascript" src="js/models/Product.js"></script>
<script type="text/javascript" src="js/models/CartProduct.js"></script>

0
ko-cart/js/bootstrap.js → ko-cart/js/vendors/bootstrap.js vendored
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0
ko-cart/js/bootstrap.min.js → ko-cart/js/vendors/bootstrap.min.js vendored
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0
ko-cart/js/jquery-2.1.1.min.js → ko-cart/js/vendors/jquery-2.1.1.min.js vendored
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0
ko-cart/js/knockout-3.2.0.js → ko-cart/js/vendors/knockout-3.2.0.js vendored
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317
ko-cart/js/vendors/koExternalTemplateEngine_all.js vendored 100644
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@ -0,0 +1,317 @@
(function($, undefined) {
/*
TrafficCop
Author: Jim Cowart
License: Dual licensed MIT (http://www.opensource.org/licenses/mit-license) & GPL (http://www.opensource.org/licenses/gpl-license)
Version 0.3.0
*/
var inProgress = {};
$.trafficCop = function(url, options) {
var reqOptions = url, key;
if(arguments.length === 2) {
reqOptions = $.extend(true, options, { url: url });
}
key = JSON.stringify(reqOptions);
if (key in inProgress) {
for (var i in {success: 1, error: 1, complete: 1}) {
inProgress[key][i](reqOptions[i]);
}
} else {
inProgress[key] = $.ajax(reqOptions).always(function () { delete inProgress[key]; });
}
return inProgress[key];
};
})(jQuery);
(function($, global, undefined) {
/*
infuser.js
Author: Jim Cowart
License: Dual licensed MIT (http://www.opensource.org/licenses/mit-license) & GPL (http://www.opensource.org/licenses/gpl-license)
Version 0.2.0
*/
var hashStorage = {
templates: {},
storeTemplate: function(templateId, templateContent) {
this.templates[templateId] = templateContent;
},
getTemplate: function(templateId) {
return this.templates[templateId];
},
purge: function() {
this.templates = {};
}
};
var scriptStorage = {
templateIds: [],
storeTemplate: function(templateId, templateContent) {
var node = document.getElementById(templateId);
if(node === null) {
this.templateIds.push(templateId);
node = document.createElement("script");
node.type = "text/html";
node.id = templateId;
document.body.appendChild(node);
}
node.text = templateContent;
},
getTemplate: function(templateId) {
return document.getElementById(templateId);
},
purge: function() {
for(var i = 0; i < this.templateIds.length; i++) {
document.body.removeChild(document.getElementById(this.templateIds[i]));
}
this.templateIds = [];
}
};
var errorHtml = "<div class='infuser-error'>The template <a href='{TEMPLATEURL}'>{TEMPLATEID}</a> could not be loaded. {STATUS}</div>",
returnErrorTemplate = function(status, templateId, templatePath) {
return errorHtml.replace('{STATUS}', status).replace('{TEMPLATEID}', templateId).replace('{TEMPLATEURL}', templatePath);
},
errors = [];
var helpers = {
getTemplatePath: function(templateOptions) {
var templateFile = templateOptions.templatePrefix + templateOptions.templateId + templateOptions.templateSuffix;
return templateOptions.templateUrl === undefined || templateOptions.templateUrl === "" ?
templateFile : templateOptions.templateUrl + "/" + templateFile;
},
templateGetSuccess: function(templateId, callback) {
return function(response) {
infuser.store.storeTemplate(templateId, response);
callback(infuser.store.getTemplate(templateId));
};
},
templateGetError: function(templateId, templatePath, callback) {
return function(exception) {
if($.inArray(templateId, errors) === -1) {
errors.push(templateId);
}
var templateHtml = returnErrorTemplate("HTTP Status code: " + exception.status, templateId, templatePath);
infuser.store.storeTemplate(templateId, templateHtml);
callback(infuser.store.getTemplate(templateId));
};
},
getAjaxOptions: function(templateOptions) {
}
},
infuserOptions = ['target','loadingTemplate','postRender','preRender','render','bindingInstruction','useLoadingTemplate','model','templateUrl','templateSuffix','templatePrefix',''];
var infuser = {
storageOptions: {
hash: hashStorage,
script: scriptStorage
},
store: hashStorage,
defaults: {
// Template name conventions
templateUrl: "",
templateSuffix: ".html",
templatePrefix: "",
// AJAX Options
ajax: {
"async": true,
"dataType": "html",
"type": "GET"
},
// infuse() specific options - NOT used for "get" or "getSync"
target: function(templateId) { return "#" + templateId; }, // DEFAULT MAPPING
loadingTemplate: {
content: '<div class="infuser-loading">Loading...</div>',
transitionIn: function(target, content) {
var tgt = $(target);
tgt.hide();
tgt.html(content);
tgt.fadeIn();
},
transitionOut: function(target) {
$(target).html("");
}
},
postRender: function(targetElement) { }, // NO_OP effectively by default
preRender: function(targetElement, template) { }, // NO_OP effectively by default
render: function(target, template) {
var tgt = $(target);
if(tgt.children().length === 0) {
tgt.append($(template));
}
else {
tgt.children().replaceWith($(template));
}
},
bindingInstruction: function(template, model) { return template; }, // NO_OP effectively by default
useLoadingTemplate: true // true/false
},
get: function(options, callback) {
var templateOptions = $.extend({}, infuser.defaults, (typeof options === "object" ? options : { templateId: options })),
template;
templateOptions.ajax.url = helpers.getTemplatePath(templateOptions);
template = infuser.store.getTemplate(templateOptions.ajax.url);
if(!template || $.inArray(templateOptions.ajax.url, errors) !== -1) {
templateOptions.ajax.success = helpers.templateGetSuccess(templateOptions.ajax.url, callback);
templateOptions.ajax.error = helpers.templateGetError(templateOptions.templateId, templateOptions.ajax.url, callback);
$.trafficCop(templateOptions.ajax);
}
else {
callback(template);
}
},
getSync: function(options) {
var templateOptions = $.extend({}, infuser.defaults, (typeof options === "object" ? options : { templateId: options }), { ajax: { async: false } }),
template,
templateHtml;
templateOptions.ajax.url = helpers.getTemplatePath(templateOptions);
template = infuser.store.getTemplate(templateOptions.ajax.url);
if(!template || $.inArray(templateOptions.ajax.url, errors) !== -1) {
templateHtml = null;
templateOptions.ajax.success = function(response) { templateHtml = response; };
templateOptions.ajax.error = function(exception) {
if($.inArray(templateOptions.ajax.url) === -1) {
errors.push(templateOptions.ajax.url);
}
templateHtml = returnErrorTemplate("HTTP Status code: exception.status", templateOptions.templateId, templateOptions.ajax.url);
};
$.ajax(templateOptions.ajax);
if(templateHtml === null) {
templateHtml = returnErrorTemplate("An unknown error occurred.", templateOptions.templateId, templateOptions.ajax.url);
}
else {
infuser.store.storeTemplate(templateOptions.ajax.url, templateHtml);
template = infuser.store.getTemplate(templateOptions.ajax.url);
}
}
return template;
},
infuse: function(templateId, renderOptions) {
var templateOptions = $.extend({}, infuser.defaults, (typeof templateId === "object" ? templateId : renderOptions), (typeof templateId === "string" ? { templateId: templateId } : undefined )),
targetElement = typeof templateOptions.target === 'function' ? templateOptions.target(templateId) : templateOptions.target;
if(templateOptions.useLoadingTemplate) {
templateOptions.loadingTemplate.transitionIn(targetElement, templateOptions.loadingTemplate.content);
}
infuser.get(templateOptions, function(template) {
var _template = template;
templateOptions.preRender(targetElement, _template);
_template = templateOptions.bindingInstruction(_template, templateOptions.model);
if(templateOptions.useLoadingTemplate) {
templateOptions.loadingTemplate.transitionOut(targetElement);
}
templateOptions.render(targetElement, _template);
templateOptions.postRender(targetElement);
});
}
};
global.infuser = infuser; })(jQuery, window);
// Knockout External Template Engine
// Author: Jim Cowart
// License: MIT (http://www.opensource.org/licenses/mit-license)
// Version 2.0.5
(function ( global, ko, jQuery, infuser, undefined ) {
var ExternalTemplateSource = function(templateId, options) {
var self = this, origAfterRender;
self.templateId = templateId;
self.loaded = false;
self.template = ko.observable(infuser.defaults.useLoadingTemplate ? infuser.defaults.loadingTemplate.content : undefined);
self.template.data = {};
self.options = ko.utils.extend({},options);
self.options.templateId = templateId;
if(self.options && self.options.afterRender) {
origAfterRender = self.options.afterRender;
self.options.afterRender = function() {
if(self.loaded) {
origAfterRender.apply(self.options, arguments);
}
};
}
};
ko.utils.extend(ExternalTemplateSource.prototype, {
data: function(key, value) {
if (arguments.length === 1) {
if(key === "precompiled") {
this.template();
}
return this.template.data[key];
}
this.template.data[key] = value;
},
text: function(value) {
if (!this.loaded) {
this.getTemplate();
}
if (arguments.length === 0) {
return this.template();
} else {
this.template(arguments[0]);
}
},
getTemplate: function() {
var self = this;
infuser.get(self.options, function(tmpl) {
self.data("precompiled",null);
self.template(tmpl);
self.loaded = true;
});
}
});
var KoExternalTemplateEngine = function(koEngineType) {
var engine = koEngineType ? new koEngineType() : new ko.nativeTemplateEngine();
engine.templates = {};
engine.makeTemplateSource = function(template, bindingContext, options) {
// Named template
if (typeof template == "string") {
var elem = document.getElementById(template);
if (elem)
return new ko.templateSources.domElement(elem);
else {
if(!engine.templates[template]) {
engine.templates[template] = new ExternalTemplateSource(template, options);
}
return engine.templates[template];
}
}
else if ((template.nodeType == 1) || (template.nodeType == 8)) {
// Anonymous template
return new ko.templateSources.anonymousTemplate(template);
}
};
engine.renderTemplate = function (template, bindingContext, options) {
var templateSource = engine.makeTemplateSource(template, bindingContext, options);
return engine.renderTemplateSource(templateSource, bindingContext, options);
};
return engine;
};
ko.KoExternalTemplateEngine = KoExternalTemplateEngine;
if (jQuery.tmpl && jQuery.tmpl.tag.tmpl.open.toString().indexOf('__') >= 0) {
ko.setTemplateEngine(new KoExternalTemplateEngine(ko.jqueryTmplTemplateEngine));
}
else {
ko.setTemplateEngine(new KoExternalTemplateEngine());
}
})( window, ko, jQuery, infuser );

25
ko-cart/js/viewmodel.js
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@ -145,25 +145,8 @@ var vm = (function () {
};
})();
var templates = [
"header",
"catalog",
"cart",
"cart-item",
"cart-widget",
"order",
"add-to-catalog-modal",
"finish-order-modal",
];
// ko External Template Settings
infuser.defaults.templateSuffix = ".html";
infuser.defaults.templateUrl = "views";
var busy = templates.length;
templates.forEach(function (tpl) {
"use strict";
$.get("views/" + tpl + ".html").then(function (data) {
$("body").append(data);
busy--;
if (!busy) {
ko.applyBindings(vm);
}
});
});
ko.applyBindings(vm);

2
ko-cart/views/add-to-catalog-modal.html
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@ -1,4 +1,3 @@
<script type="text/html" id="add-to-catalog-modal">
<div class="modal fade" id="addToCatalogModal">
<div class="modal-dialog">
<div class="modal-content">
@ -73,4 +72,3 @@
<!-- /.modal-diaglog -->
</div>
<!-- /.modal -->
</script>

2
ko-cart/views/cart-item.html
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@ -1,4 +1,3 @@
<script type="text/html" id="cart-item">
<div class="list-group-item" style="overflow: hidden">
<button
type="button"
@ -33,4 +32,3 @@
</span>
</div>
</div>
</script>

2
ko-cart/views/cart-widget.html
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@ -1,4 +1,2 @@
<script type="text/html" id="cart-widget">
Total Items: <span data-bind="text:totalItems"></span> Price:
<span data-bind="text:grandTotal"></span>
</script>

2
ko-cart/views/cart.html
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@ -1,4 +1,3 @@
<script type="text/html" id="cart">
<button
type="button"
class="close pull-right"
@ -15,4 +14,3 @@
<button class="btn btn-primary btn-sm" data-bind="click:showOrder">
Confirm Order
</button>
</script>

2
ko-cart/views/catalog.html
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@ -1,4 +1,3 @@
<script type="text/html" id="catalog">
<div class="input-group">
<span class="input-group-addon">
<i class="glyphicon glyphicon-search"></i> Search
@ -45,4 +44,3 @@
</tr>
</tfoot>
</table>
</script>

2
ko-cart/views/finish-order-modal.html
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@ -1,4 +1,3 @@
<script type="text/html" id="finish-order-modal">
<div class="modal fade" id="finishOrderModal">
<div class="modal-dialog">
<div class="modal-content">
@ -21,4 +20,3 @@
</div>
</div>
</div>
</script>

2
ko-cart/views/header.html
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@ -1,4 +1,3 @@
<script type="text/html" id="header">
<h1>Catalog</h1>
<button
@ -15,4 +14,3 @@
Show Cart Details
</button>
<hr />
</script>

2
ko-cart/views/order.html
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@ -1,4 +1,3 @@
<script type="text/html" id="order">
<div class="col-xs-12">
<button class="btn btn-sm btn-primary" data-bind="click:showCatalog">
Back to catalog
@ -33,4 +32,3 @@
</tfoot>
</table>
</div>
</script>