@offensichtbar-codestock/ngx-flex-masonry-grid
Version:
Angular Module for displaying items in a flex-based masonry layout without any third party dependencies
143 lines • 18.4 kB
JavaScript
import { Component, ElementRef, HostBinding, Inject, HostListener } from '@angular/core';
import { AnimationBuilder, useAnimation } from '@angular/animations';
import { NgxFlexMasonryGridService } from "./ngx-flex-masonry-grid.service";
import { CIRCULAR_IMPORT_PARENT } from './circular-imports';
import NgxFMG_ANIMATION from './animations';
export class NgxFlexMasonryGridItemComponent {
constructor(element, builder, service, parent) {
this.element = element;
this.builder = builder;
this.service = service;
this.parent = parent;
this.heightprops = 'max-content';
this._translateY = 0;
this._isready = false;
this._remove = false;
}
get getLeaveDrawer() {
return this._remove;
}
animationIsDone() {
if (this._remove)
this.service.removeItem(this);
}
get height() {
return this.element.nativeElement.offsetHeight;
}
get isready() {
return this._isready;
}
set isready(ready) {
this._isready = ready;
}
get width() {
const marginLeft = window
.getComputedStyle(this.element.nativeElement, null)
.getPropertyValue('margin-left')
.match(/\d+/);
const marginRight = window
.getComputedStyle(this.element.nativeElement, null)
.getPropertyValue('margin-right')
.match(/\d+/);
return this.element.nativeElement.offsetWidth + (parseInt(marginLeft[0]) + parseInt(marginRight[0]));
}
set translateY(value) {
if (this._isready) {
this.upDatePosition(value);
}
else {
this.element.nativeElement.style.transform = `translateY(-${value}px)`;
}
this._translateY = value;
}
get translateY() {
return this._translateY;
}
ngOnInit() { }
upDatePosition(to) {
const params = { animatePosY: `-${to}px` };
const metadata = useAnimation(NgxFMG_ANIMATION.UPDATE_POSITION, { params: params });
const player = this.builder.build(metadata).create(this.element.nativeElement);
player.play();
}
playAnimation() {
const metadata = NgxFMG_ANIMATION.FADE_IN;
this.element.nativeElement.style.visibility = 'visible';
const player = this.builder.build(metadata).create(this.element.nativeElement);
player.play();
}
ngAfterViewInit() {
this.translateY = 0;
this.startLoading();
}
startLoading() {
const images = this.element.nativeElement.querySelectorAll('img');
this.images = new Set(images);
let loaded = [];
if (images.length == 0) {
setTimeout(() => {
this.service.observeimage([...loaded, {
item: this,
height: this.element.nativeElement.offsetHeight
}]);
});
return;
}
Array.from(this.images).forEach((image) => {
this.loadImage(image.src).then(props => {
var _a;
loaded = this.checkActionLoaded(loaded, images, props);
(_a = this.images) === null || _a === void 0 ? void 0 : _a.delete(image);
}).catch((error) => {
var _a;
loaded = this.checkActionLoaded(loaded, images);
(_a = this.images) === null || _a === void 0 ? void 0 : _a.delete(image);
});
});
}
checkActionLoaded(loaded, images, props) {
loaded = [...loaded, (props) ? props : {
item: this,
height: this.element.nativeElement.offsetHeight
}];
if (loaded.length === images.length) {
this.service.observeimage(loaded);
}
return loaded;
}
loadImage(src) {
return new Promise((resolve, reject) => {
let img = new Image();
img.onload = () => resolve({
item: this,
height: this.element.nativeElement.offsetHeight
});
img.onerror = reject;
img.src = src;
});
}
ngOnDestroy() {
this._remove = true;
}
}
NgxFlexMasonryGridItemComponent.decorators = [
{ type: Component, args: [{
selector: 'osb-ngx-flexmasonry-grid-item',
template: '<ng-content></ng-content> ',
animations: [
NgxFMG_ANIMATION.TRIGGER_FADE_OUT
]
},] }
];
NgxFlexMasonryGridItemComponent.ctorParameters = () => [
{ type: ElementRef },
{ type: AnimationBuilder },
{ type: NgxFlexMasonryGridService },
{ type: undefined, decorators: [{ type: Inject, args: [CIRCULAR_IMPORT_PARENT,] }] }
];
NgxFlexMasonryGridItemComponent.propDecorators = {
heightprops: [{ type: HostBinding, args: ['style.height',] }],
getLeaveDrawer: [{ type: HostBinding, args: ['@TRIGGER_FADE_OUT',] }],
animationIsDone: [{ type: HostListener, args: ['@TRIGGER_FADE_OUT.done',] }]
};
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{Component, OnInit, OnDestroy, AfterViewInit, ElementRef, HostBinding, Inject, HostListener} from '@angular/core';\nimport { NgxFlexMasonryGridLoadingParams } from './ngx-flex-masonry-grid-options';\nimport { AnimationBuilder,useAnimation } from '@angular/animations';\nimport { NgxFlexMasonryGridService } from \"./ngx-flex-masonry-grid.service\";\nimport { CircularImportsParent, CIRCULAR_IMPORT_PARENT } from './circular-imports';\nimport NgxFMG_ANIMATION from './animations';\n\n@Component({ \n    selector: 'osb-ngx-flexmasonry-grid-item',\n    template: '<ng-content></ng-content> ', \n    animations: [\n        NgxFMG_ANIMATION.TRIGGER_FADE_OUT\n    ]\n    \n}) \n\nexport class NgxFlexMasonryGridItemComponent implements OnInit, OnDestroy, AfterViewInit  {\n\n    \n    @HostBinding('style.height') heightprops =  'max-content'; \n\n    @HostBinding('@TRIGGER_FADE_OUT') get getLeaveDrawer(): boolean {\n        return this._remove;\n    }\n\n    @HostListener('@TRIGGER_FADE_OUT.done') animationIsDone() {\n        if(this._remove)\n            this.service.removeItem(this);\n    }\n \n   \n    public images?: Set<HTMLImageElement>;\n    private _translateY: number =0;\n    private _isready: boolean = false;\n    private _remove: boolean = false;\n    public get height(): number {\n        return this.element.nativeElement.offsetHeight;\n    }\n\n    public get isready():boolean {\n        return this._isready;\n    }\n\n\n    public set isready(ready:boolean) {\n        this._isready = ready;\n    }\n\n    public get width():number {\n        const  marginLeft:any = window\n            .getComputedStyle(this.element.nativeElement,null)\n            .getPropertyValue('margin-left')\n            .match(/\\d+/);\n    \n        const marginRight:any = window\n            .getComputedStyle(this.element.nativeElement,null)\n            .getPropertyValue('margin-right')\n            .match(/\\d+/);\n\n        return this.element.nativeElement.offsetWidth + (parseInt(marginLeft[0]) + parseInt(marginRight[0]));\n    }\n\n    public set translateY(value:number) {\n        if(this._isready) {\n            this.upDatePosition(value);\n        } else {\n            this.element.nativeElement.style.transform = `translateY(-${value}px)`;\n           \n        }\n        this._translateY = value;\n    }\n\n    public get translateY():number {\n        return this._translateY;\n    }\n\n    constructor(\n        private element: ElementRef, \n        private builder: AnimationBuilder,   \n        public service: NgxFlexMasonryGridService,\n        @Inject(CIRCULAR_IMPORT_PARENT) private parent: CircularImportsParent\n    ) { }\n\n    ngOnInit() {}\n\n    upDatePosition(to:number) {\n      \n        const params = {animatePosY: `-${to}px`};\n        const metadata = useAnimation(NgxFMG_ANIMATION.UPDATE_POSITION, {params: params});\n\n        const player = this.builder.build(metadata).create(this.element.nativeElement);\n \n\n        player.play();           \n            \n    }\n\n    playAnimation() {\n        \n        const metadata = NgxFMG_ANIMATION.FADE_IN;\n        this.element.nativeElement.style.visibility = 'visible';\n\n        const player = this.builder.build(metadata).create(this.element.nativeElement);\n        player.play();       \n    }\n\n    ngAfterViewInit() {\n        this.translateY = 0;\n        this.startLoading();\n    }\n\n    startLoading() {\n        const images = this.element.nativeElement.querySelectorAll('img');     \n        this.images = new Set(images);    \n        let loaded:Array<NgxFlexMasonryGridLoadingParams> = [];\n\n        if( images.length == 0) {\n           setTimeout(() =>{\n                this.service.observeimage([...loaded, {\n                    item: this,\n                    height: this.element.nativeElement.offsetHeight\n                }]);\n            });\n            \n            return;\n        }\n\n        Array.from(this.images).forEach((image: HTMLImageElement) => {\n            \n            this.loadImage(image.src).then(props => {\n                loaded = this.checkActionLoaded(loaded, images, props)\n                this.images?.delete(image);\n            }).catch((error) => {                    \n                loaded = this.checkActionLoaded(loaded, images)\n                this.images?.delete(image);\n            })\n        });\n    }\n\n    checkActionLoaded(loaded: Array<NgxFlexMasonryGridLoadingParams>, images: Array<HTMLImageElement>, props?:NgxFlexMasonryGridLoadingParams) {\n        loaded = [...loaded, (props) ? props : {\n            item: this,\n            height: this.element.nativeElement.offsetHeight\n        }];\n\n        if(loaded.length === images.length) {                       \n            this.service.observeimage(loaded);\n        } \n\n        return loaded;\n    }\n\n    loadImage(src: string): Promise<NgxFlexMasonryGridLoadingParams> {\n\n        return  new Promise((resolve, reject) => {\n            let img = new Image()\n            img.onload = () => resolve({\n                item: this,\n                height: this.element.nativeElement.offsetHeight\n            })\n            img.onerror = reject\n            img.src = src\n        })\n       \n    }\n\n    ngOnDestroy() {\n        this._remove = true;\n       \n    }\n}\n"]}