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be-promising.js
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be-promising.js
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import { BE, propDefaults, propInfo } from 'be-enhanced/BE.js';
import { XE } from 'xtal-element/XE.js';
import { register } from 'be-hive/register.js';
import { lispToCamel } from 'trans-render/lib/lispToCamel.js';
export class BePromising extends BE {
static get beConfig() {
return {
parse: true,
primaryProp: 'be'
};
}
async onBe(self) {
const { be, enhancedElement } = self;
for (const instruction of be) {
await this.doInstruction(enhancedElement, instruction);
}
return {
resolved: true,
};
}
async doInstruction(enhancedElement, instruction) {
switch (typeof instruction) {
case 'string':
await enhancedElement.beEnhanced.whenResolved('be-' + instruction);
return;
case 'object':
if (instruction instanceof Array) {
for (const childInstruction of instruction) {
await this.doInstruction(enhancedElement, childInstruction);
}
}
else {
for (const key in instruction) {
const enh = 'be-' + key;
const enhancement = lispToCamel(enh);
const val = instruction[key];
switch (typeof val) {
case 'string':
enhancedElement.beEnhanced.by[enhancement] = val;
break;
case 'object':
if (Array.isArray(val))
throw 'NI';
Object.assign(enhancedElement.beEnhanced.by[enhancement], val);
break;
default:
throw 'NI';
}
await enhancedElement.beEnhanced.whenResolved(enh);
}
}
}
}
async onResolved(self) {
const { enhancedElement, be } = self;
if (enhancedElement.hasAttribute('be-promising')) {
const guid = 'a' + counter++;
enhancedElement.setAttribute('data-bpguid', guid);
const rn = enhancedElement.getRootNode();
if (rn[enhancementGuid] === undefined)
rn[enhancementGuid] = {};
rn[enhancementGuid][guid] = be;
}
await enhancedElement.beEnhanced.whenDetached('be-promising');
}
}
export const enhancementGuid = 'QA7Ey8RiUuHVDZ3lw';
let counter = 0;
const tagName = 'be-promising';
const ifWantsToBe = 'promising';
const upgrade = '*';
const xe = new XE({
config: {
tagName,
propDefaults: {
...propDefaults,
},
propInfo: {
...propInfo,
},
actions: {
onBe: 'be',
onResolved: 'resolved'
}
},
superclass: BePromising
});
register(ifWantsToBe, upgrade, tagName);