@blackbaud/angular-tree-component
Version:
A simple yet powerful tree component for Angular 14+
101 lines • 13 kB
JavaScript
import { Directive, Input } from '@angular/core';
import * as i0 from "@angular/core";
const EASE_ACCELERATION = 1.005;
export class TreeAnimateOpenDirective {
constructor(renderer, templateRef, viewContainerRef) {
this.renderer = renderer;
this.templateRef = templateRef;
this.viewContainerRef = viewContainerRef;
}
set isOpen(value) {
if (value) {
this._show();
if (this.isEnabled && this._isOpen === false) {
this._animateOpen();
}
}
else {
this.isEnabled ? this._animateClose() : this._hide();
}
this._isOpen = !!value;
}
;
_show() {
if (this.innerElement)
return;
// create child view
this.innerElement = this.viewContainerRef.createEmbeddedView(this.templateRef).rootNodes[0];
}
_hide() {
this.viewContainerRef.clear();
this.innerElement = null;
}
_animateOpen() {
let delta = this.animateSpeed;
let ease = this.animateAcceleration;
let maxHeight = 0;
// set height to 0
this.renderer.setStyle(this.innerElement, 'max-height', `0`);
// increase maxHeight until height doesn't change
setTimeout(() => {
const i = setInterval(() => {
if (!this._isOpen || !this.innerElement)
return clearInterval(i);
maxHeight += delta;
const roundedMaxHeight = Math.round(maxHeight);
this.renderer.setStyle(this.innerElement, 'max-height', `${roundedMaxHeight}px`);
const height = this.innerElement.getBoundingClientRect ? this.innerElement.getBoundingClientRect().height : 0; // TBD use renderer
delta *= ease;
ease *= EASE_ACCELERATION;
if (height < roundedMaxHeight) {
// Make maxHeight auto because animation finished and container might change height later on
this.renderer.setStyle(this.innerElement, 'max-height', null);
clearInterval(i);
}
}, 17);
});
}
_animateClose() {
if (!this.innerElement)
return;
let delta = this.animateSpeed;
let ease = this.animateAcceleration;
let height = this.innerElement.getBoundingClientRect().height; // TBD use renderer
// slowly decrease maxHeight to 0, starting from current height
const i = setInterval(() => {
if (this._isOpen || !this.innerElement)
return clearInterval(i);
height -= delta;
this.renderer.setStyle(this.innerElement, 'max-height', `${height}px`);
delta *= ease;
ease *= EASE_ACCELERATION;
if (height <= 0) {
// after animation complete - remove child element
this.viewContainerRef.clear();
this.innerElement = null;
clearInterval(i);
}
}, 17);
}
}
/** @nocollapse */ TreeAnimateOpenDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: TreeAnimateOpenDirective, deps: [{ token: i0.Renderer2 }, { token: i0.TemplateRef }, { token: i0.ViewContainerRef }], target: i0.ɵɵFactoryTarget.Directive });
/** @nocollapse */ TreeAnimateOpenDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.3.0", type: TreeAnimateOpenDirective, selector: "[treeAnimateOpen]", inputs: { animateSpeed: ["treeAnimateOpenSpeed", "animateSpeed"], animateAcceleration: ["treeAnimateOpenAcceleration", "animateAcceleration"], isEnabled: ["treeAnimateOpenEnabled", "isEnabled"], isOpen: ["treeAnimateOpen", "isOpen"] }, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: TreeAnimateOpenDirective, decorators: [{
type: Directive,
args: [{
selector: '[treeAnimateOpen]'
}]
}], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i0.TemplateRef }, { type: i0.ViewContainerRef }]; }, propDecorators: { animateSpeed: [{
type: Input,
args: ['treeAnimateOpenSpeed']
}], animateAcceleration: [{
type: Input,
args: ['treeAnimateOpenAcceleration']
}], isEnabled: [{
type: Input,
args: ['treeAnimateOpenEnabled']
}], isOpen: [{
type: Input,
args: ['treeAnimateOpen']
}] } });
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this._animateClose() : this._hide();\n    }\n    this._isOpen = !!value;\n  };\n\n  private innerElement: any;\n\n  constructor(\n    private renderer: Renderer2,\n    private templateRef: TemplateRef<any>,\n    private viewContainerRef: ViewContainerRef) {\n  }\n\n  private _show() {\n    if (this.innerElement) return;\n\n    // create child view\n    this.innerElement = this.viewContainerRef.createEmbeddedView(this.templateRef).rootNodes[0];\n  }\n\n  private _hide() {\n    this.viewContainerRef.clear();\n    this.innerElement = null;\n  }\n\n  private _animateOpen() {\n    let delta = this.animateSpeed;\n    let ease = this.animateAcceleration;\n    let maxHeight = 0;\n\n    // set height to 0\n    this.renderer.setStyle(this.innerElement, 'max-height', `0`);\n\n    // increase maxHeight until height doesn't change\n    setTimeout(() => { // Allow inner element to create its content\n      const i = setInterval(() => {\n        if (!this._isOpen || !this.innerElement) return clearInterval(i);\n\n        maxHeight += delta;\n        const roundedMaxHeight = Math.round(maxHeight);\n\n        this.renderer.setStyle(this.innerElement, 'max-height', `${roundedMaxHeight}px`);\n        const height = this.innerElement.getBoundingClientRect ? this.innerElement.getBoundingClientRect().height : 0; // TBD use renderer\n\n        delta *= ease;\n        ease *= EASE_ACCELERATION;\n        if (height < roundedMaxHeight) {\n          // Make maxHeight auto because animation finished and container might change height later on\n          this.renderer.setStyle(this.innerElement, 'max-height', null);\n          clearInterval(i);\n        }\n      }, 17);\n    });\n  }\n\n  private _animateClose() {\n    if (!this.innerElement) return;\n\n    let delta = this.animateSpeed;\n    let ease = this.animateAcceleration;\n    let height = this.innerElement.getBoundingClientRect().height; // TBD use renderer\n\n    // slowly decrease maxHeight to 0, starting from current height\n    const i = setInterval(() => {\n      if (this._isOpen || !this.innerElement) return clearInterval(i);\n\n      height -= delta;\n      this.renderer.setStyle(this.innerElement, 'max-height', `${height}px`);\n      delta *= ease;\n      ease *= EASE_ACCELERATION;\n\n      if (height <= 0) {\n        // after animation complete - remove child element\n        this.viewContainerRef.clear();\n        this.innerElement = null;\n        clearInterval(i);\n      }\n    }, 17);\n  }\n}\n"]}