@ibyar/directives
Version:
Ibyar directives had the built-in directives for aurora project
77 lines • 3.23 kB
JavaScript
import { __esDecorate, __runInitializers } from "tslib";
import { Directive, input, StructuralDirective } from '@ibyar/core';
let IfThenElseDirective = (() => {
let _classDecorators = [Directive({
selector: '*if',
successors: ['*else'],
})];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
let _classSuper = StructuralDirective;
var IfThenElseDirective = class extends _classSuper {
static { _classThis = this; }
static {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(_classSuper[Symbol.metadata] ?? null) : void 0;
__esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
IfThenElseDirective = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
}
_condition;
_thenTemplateRef = this.templateRef;
_elseTemplateRef;
_lastCondition = null;
if = input.required({
transform: condition => {
this._condition = condition;
this._updateUI();
return this._condition;
}
});
then = input.required({
transform: template => {
this._thenTemplateRef = template;
if (this._condition) {
// need to force rendering the new template in case of false condition
this._lastCondition = null;
}
this._updateUI();
return this._thenTemplateRef;
}
});
else = input(undefined, {
transform: template => {
this._elseTemplateRef = template;
if (!this._condition) {
// need to force rendering the new template in case of false condition
this._lastCondition = null;
}
this._updateUI();
return this._elseTemplateRef;
}
});
_updateUI() {
const elseSuccessor = this.getSuccessor('*else');
if (this._condition !== this._lastCondition) {
this._lastCondition = this._condition;
this.viewContainerRef.clear();
if (this._condition) {
this.viewContainerRef.createEmbeddedView(this._thenTemplateRef);
}
else if (this._elseTemplateRef) {
this.viewContainerRef.createEmbeddedView(this._elseTemplateRef);
}
else if (elseSuccessor) {
this.viewContainerRef.createEmbeddedView(elseSuccessor);
}
}
}
onDestroy() {
this.viewContainerRef.clear();
}
};
return IfThenElseDirective = _classThis;
})();
export { IfThenElseDirective };
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