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template-builder.ts

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import definition = require("ui/builder/template-builder");

var KNOWNTEMPLATES = "knownTemplates";

export class TemplateBuilder {

private _items: Array<string>;

private _templateProperty: definition.TemplateProperty;

constructor(templateProperty: definition.TemplateProperty) {

this._items = new Array<string>();

this._templateProperty = templateProperty;

}

public get elementName(): string {

return this._templateProperty.elementName;

}

public addStartElement(prefix: string, namespace: string, elementName: string, attributes: Object) {

this._items.push("<" +

getElementNameWithPrefix(prefix, elementName) +

(namespace ? " " + getNamespace(prefix, namespace) : "") +

(attributes ? " " + getAttributesAsString(attributes) : "") +

">");

}

public addEndElement(prefix: string, elementName: string) {

this._items.push("</" + getElementNameWithPrefix(prefix, elementName) + ">");

}

public build() {

if (this._templateProperty.name in this._templateProperty.parent.component) {

this._templateProperty.parent.component[this._templateProperty.name] = this._items.join("");

}

export function isKnownTemplate(name: string, exports: any): boolean {

return KNOWNTEMPLATES in exports && exports[KNOWNTEMPLATES] && name in exports[KNOWNTEMPLATES];

}

function getAttributesAsString(attributes: Object): string {

var result = [];

for (var item in attributes) {

result.push(item + '="' + attributes[item] + '"');

}

return result.join(" ");

}

function getElementNameWithPrefix(prefix: string, elementName: string): string {

return (prefix ? prefix + ":" : "") + elementName;

}

function getNamespace(prefix: string, namespace: string): string {

return 'xmlns:' + prefix + '="' + namespace + '"';

}