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1 | 1 | import { isNull, mixin, argumentNotNull } from "@implab/core-amd/safe"; |
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2 | 2 | import { isPlainObject, isNode, isBuildContext } from "./traits"; |
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3 | 3 | |
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4 | 4 | export abstract class BuildContextBase { |
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5 | 5 | _attrs = {}; |
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6 | 6 | |
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7 | 7 | _children = new Array(); |
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8 | 8 | |
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9 | 9 | _created: boolean = false; |
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10 | 10 | |
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11 | 11 | visitNext(v: any) { |
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12 | 12 | if (isNull(v)) |
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13 | 13 | return; |
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14 | 14 | |
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15 | 15 | if (isPlainObject(v)) { |
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16 | 16 | |
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17 | 17 | if (this._created) |
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18 | 18 | this._setAttrs(v); |
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19 | 19 | else |
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20 | 20 | mixin(this._attrs, v); |
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21 | ||
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21 | } else if (v instanceof Array) { | |
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22 | v.forEach(x => this._addChild(x)); | |
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22 | 23 | } else { |
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23 | 24 | if (this._created) |
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24 | 25 | this._addChild(v); |
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25 | 26 | else |
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26 | 27 | this._children.push(v); |
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27 | 28 | } |
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28 | 29 | } |
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29 | 30 | |
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30 | 31 | getChildDom(v: any) { |
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31 | 32 | const tv = typeof v; |
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32 | 33 | if (tv === "string" || tv === "number" || tv === "boolean" || v instanceof RegExp || v instanceof Date) { |
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33 | 34 | return document.createTextNode(v.toString()); |
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34 | 35 | } else if (isNode(v)) { |
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35 | 36 | return v; |
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36 | 37 | } else if (isBuildContext(v)) { |
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37 | 38 | return v.getDomElement(); |
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38 | 39 | } else { |
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39 | 40 | throw new Error("Invalid parameter"); |
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40 | 41 | } |
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41 | 42 | } |
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42 | 43 | |
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43 | 44 | abstract _getDomElement(): HTMLElement; |
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44 | 45 | |
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45 | 46 | ensureCreated() { |
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46 | 47 | if (!this._created) { |
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47 | 48 | this._create(this._attrs, this._children); |
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48 | 49 | this._children = []; |
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49 | 50 | this._attrs = {}; |
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50 | 51 | this._created = true; |
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51 | 52 | } |
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52 | 53 | } |
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53 | 54 | |
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54 | 55 | getDomElement() { |
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55 | 56 | this.ensureCreated(); |
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56 | 57 | return this._getDomElement(); |
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57 | 58 | } |
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58 | 59 | |
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59 | 60 | abstract _addChild(child: any): void; |
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60 | 61 | |
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61 | 62 | abstract _setAttrs(attrs: object): void; |
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62 | 63 | |
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63 | 64 | abstract _create(attrs: object, children: any[]): void; |
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64 | 65 | } |
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