import {List, ListWrapper} from 'angular2/src/facade/collection';

import {isPresent, isFunction} from 'angular2/src/facade/lang';

import {DomAdapter} from './dom_adapter';

/**

* Provides DOM operations in any browser environment.

*/

export class GenericBrowserDomAdapter extends DomAdapter {

getDistributedNodes(el) { return el.getDistributedNodes(); }

resolveAndSetHref(el, baseUrl: string, href: string) {

el.href = href == null ? baseUrl : baseUrl + '/../' + href;

}

cssToRules(css: string): List<any> {

var style = this.createStyleElement(css);

this.appendChild(this.defaultDoc().head, style);

var rules = ListWrapper.create();

if (isPresent(style.sheet)) {

// TODO(sorvell): Firefox throws when accessing the rules of a stylesheet

// with an @import

// https://bugzilla.mozilla.org/show_bug.cgi?id=625013

try {

var rawRules = style.sheet.cssRules;

rules = ListWrapper.createFixedSize(rawRules.length);

for (var i = 0; i < rawRules.length; i++) {

rules[i] = rawRules[i];

}

} catch (e) {

//

}

} else {

// console.warn('sheet not found', style);

}

this.remove(style);

return rules;

}

supportsDOMEvents(): boolean { return true; }

supportsNativeShadowDOM(): boolean { return isFunction(this.defaultDoc().body.createShadowRoot); }

}