angular-tree-component
Version:
A simple yet powerful tree component for Angular2
106 lines (105 loc) • 12.7 kB
JavaScript
import { Directive, Input, Renderer2, TemplateRef, ViewContainerRef } from '@angular/core';
var EASE_ACCELERATION = 1.005;
var TreeAnimateOpenDirective = /** @class */ (function () {
function TreeAnimateOpenDirective(renderer, templateRef, viewContainerRef) {
this.renderer = renderer;
this.templateRef = templateRef;
this.viewContainerRef = viewContainerRef;
}
Object.defineProperty(TreeAnimateOpenDirective.prototype, "isOpen", {
set: function (value) {
if (value) {
this._show();
if (this.isEnabled && this._isOpen === false) {
this._animateOpen();
}
}
else {
this.isEnabled ? this._animateClose() : this._hide();
}
this._isOpen = !!value;
},
enumerable: true,
configurable: true
});
;
TreeAnimateOpenDirective.prototype._show = function () {
if (this.innerElement)
return;
// create child view
this.innerElement = this.viewContainerRef.createEmbeddedView(this.templateRef).rootNodes[0];
};
TreeAnimateOpenDirective.prototype._hide = function () {
this.viewContainerRef.clear();
this.innerElement = null;
};
TreeAnimateOpenDirective.prototype._animateOpen = function () {
var _this = this;
var delta = this.animateSpeed;
var ease = this.animateAcceleration;
var maxHeight = 0;
// set height to 0
this.renderer.setStyle(this.innerElement, 'max-height', "0");
// increase maxHeight until height doesn't change
setTimeout(function () {
var i = setInterval(function () {
if (!_this._isOpen || !_this.innerElement)
return clearInterval(i);
maxHeight += delta;
var roundedMaxHeight = Math.round(maxHeight);
_this.renderer.setStyle(_this.innerElement, 'max-height', roundedMaxHeight + "px");
var 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);
});
};
TreeAnimateOpenDirective.prototype._animateClose = function () {
var _this = this;
if (!this.innerElement)
return;
var delta = this.animateSpeed;
var ease = this.animateAcceleration;
var height = this.innerElement.getBoundingClientRect().height; // TBD use renderer
// slowly decrease maxHeight to 0, starting from current height
var i = setInterval(function () {
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);
};
TreeAnimateOpenDirective.decorators = [
{ type: Directive, args: [{
selector: '[treeAnimateOpen]'
},] },
];
/** @nocollapse */
TreeAnimateOpenDirective.ctorParameters = function () { return [
{ type: Renderer2 },
{ type: TemplateRef },
{ type: ViewContainerRef }
]; };
TreeAnimateOpenDirective.propDecorators = {
animateSpeed: [{ type: Input, args: ['treeAnimateOpenSpeed',] }],
animateAcceleration: [{ type: Input, args: ['treeAnimateOpenAcceleration',] }],
isEnabled: [{ type: Input, args: ['treeAnimateOpenEnabled',] }],
isOpen: [{ type: Input, args: ['treeAnimateOpen',] }]
};
return TreeAnimateOpenDirective;
}());
export { TreeAnimateOpenDirective };
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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"]}