BuildContextBase.ts
64 lines
| 1.6 KiB
| video/mp2t
|
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r1 | import { isNull, mixin, argumentNotNull } from "@implab/core-amd/safe"; | ||
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r0 | import { isPlainObject, isNode, isBuildContext } from "./traits"; | ||
| export abstract class BuildContextBase { | ||||
| _attrs = {}; | ||||
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r1 | _children = new Array(); | ||
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r0 | |||
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r1 | _created: boolean = false; | ||
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r0 | |||
| visitNext(v: any) { | ||||
| if (isNull(v)) | ||||
| return; | ||||
| if (isPlainObject(v)) { | ||||
| if (this._created) | ||||
| this._setAttrs(v); | ||||
| else | ||||
| mixin(this._attrs, v); | ||||
| } else { | ||||
| if (this._created) | ||||
| this._addChild(v); | ||||
| else | ||||
| this._children.push(v); | ||||
| } | ||||
| } | ||||
| getChildDom(v: any) { | ||||
| const tv = typeof v; | ||||
| if (tv === "string" || tv === "number" || tv === "boolean" || v instanceof RegExp || v instanceof Date) { | ||||
| return document.createTextNode(v.toString()); | ||||
| } else if (isNode(v)) { | ||||
| return v; | ||||
| } else if (isBuildContext(v)) { | ||||
| return v.getDomElement(); | ||||
| } else { | ||||
| throw new Error("Invalid parameter"); | ||||
| } | ||||
| } | ||||
| abstract _getDomElement(): HTMLElement; | ||||
| ensureCreated() { | ||||
| if (!this._created) { | ||||
| this._create(this._attrs, this._children); | ||||
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r1 | this._children = []; | ||
| this._attrs = {}; | ||||
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r0 | this._created = true; | ||
| } | ||||
| } | ||||
| getDomElement() { | ||||
| this.ensureCreated(); | ||||
| return this._getDomElement(); | ||||
| } | ||||
| abstract _addChild(child: any): void; | ||||
| abstract _setAttrs(attrs: object): void; | ||||
| abstract _create(attrs: object, children: any[]): void; | ||||
| } | ||||