angular2
Version:
Angular 2 - a web framework for modern web apps
69 lines • 2.59 kB
JavaScript
import { isBlank } from 'angular2/src/facade/lang';
const NG_CONTENT_SELECT_ATTR = 'select';
const NG_CONTENT_ELEMENT = 'ng-content';
const LINK_ELEMENT = 'link';
const LINK_STYLE_REL_ATTR = 'rel';
const LINK_STYLE_HREF_ATTR = 'href';
const LINK_STYLE_REL_VALUE = 'stylesheet';
const STYLE_ELEMENT = 'style';
const SCRIPT_ELEMENT = 'script';
const NG_NON_BINDABLE_ATTR = 'ng-non-bindable';
export function preparseElement(ast) {
var selectAttr = null;
var hrefAttr = null;
var relAttr = null;
var nonBindable = false;
ast.attrs.forEach(attr => {
if (attr.name == NG_CONTENT_SELECT_ATTR) {
selectAttr = attr.value;
}
else if (attr.name == LINK_STYLE_HREF_ATTR) {
hrefAttr = attr.value;
}
else if (attr.name == LINK_STYLE_REL_ATTR) {
relAttr = attr.value;
}
else if (attr.name == NG_NON_BINDABLE_ATTR) {
nonBindable = true;
}
});
selectAttr = normalizeNgContentSelect(selectAttr);
var nodeName = ast.name;
var type = PreparsedElementType.OTHER;
if (nodeName == NG_CONTENT_ELEMENT) {
type = PreparsedElementType.NG_CONTENT;
}
else if (nodeName == STYLE_ELEMENT) {
type = PreparsedElementType.STYLE;
}
else if (nodeName == SCRIPT_ELEMENT) {
type = PreparsedElementType.SCRIPT;
}
else if (nodeName == LINK_ELEMENT && relAttr == LINK_STYLE_REL_VALUE) {
type = PreparsedElementType.STYLESHEET;
}
return new PreparsedElement(type, selectAttr, hrefAttr, nonBindable);
}
export var PreparsedElementType;
(function (PreparsedElementType) {
PreparsedElementType[PreparsedElementType["NG_CONTENT"] = 0] = "NG_CONTENT";
PreparsedElementType[PreparsedElementType["STYLE"] = 1] = "STYLE";
PreparsedElementType[PreparsedElementType["STYLESHEET"] = 2] = "STYLESHEET";
PreparsedElementType[PreparsedElementType["SCRIPT"] = 3] = "SCRIPT";
PreparsedElementType[PreparsedElementType["OTHER"] = 4] = "OTHER";
})(PreparsedElementType || (PreparsedElementType = {}));
export class PreparsedElement {
constructor(type, selectAttr, hrefAttr, nonBindable) {
this.type = type;
this.selectAttr = selectAttr;
this.hrefAttr = hrefAttr;
this.nonBindable = nonBindable;
}
}
function normalizeNgContentSelect(selectAttr) {
if (isBlank(selectAttr) || selectAttr.length === 0) {
return '*';
}
return selectAttr;
}
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