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import { isNull, mixin } from "@implab/core-amd/safe";
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import { isPlainObject, isNode, isBuildContext, DojoNodePosition, BuildContext } from "./traits";
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import dom = require("dojo/dom-construct");
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export abstract class BuildContextBase<TNode extends Node> implements BuildContext<TNode> {
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_attrs = {};
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_children = new Array();
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_created: boolean = false;
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visitNext(v: any) {
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if (isNull(v))
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return;
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if (isPlainObject(v)) {
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if (this._created)
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this._setAttrs(v);
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else
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mixin(this._attrs, v);
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} else if (v instanceof Array) {
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v.forEach(x => this._addChild(x));
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} else {
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if (this._created)
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this._addChild(v);
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else
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this._children.push(v);
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}
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}
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getChildDom(v: any) {
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const tv = typeof v;
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if (tv === "string" || tv === "number" || tv === "boolean" || v instanceof RegExp || v instanceof Date) {
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return document.createTextNode(v.toString());
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} else if (isNode(v)) {
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return v;
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} else if (isBuildContext(v)) {
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return v.getDomNode();
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} else {
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throw new Error("Invalid parameter");
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}
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}
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abstract _getDomNode(): TNode;
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ensureCreated() {
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if (!this._created) {
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this._create(this._attrs, this._children);
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this._children = [];
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this._attrs = {};
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this._created = true;
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}
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}
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/** @deprecated use getDomNode() */
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getDomElement() {
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return this.getDomNode();
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}
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getDomNode() {
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this.ensureCreated();
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return this._getDomNode();
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}
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placeAt(refNode: string | Node, position?: DojoNodePosition) {
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dom.place(this.getDomNode(), refNode, position);
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}
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abstract _addChild(child: any): void;
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abstract _setAttrs(attrs: object): void;
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abstract _create(attrs: object, children: any[]): void;
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}
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