angular-svg-icon
Version:
Angular 8 component for inlining SVGs allowing them to be easily styled with CSS.
307 lines • 21 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { ChangeDetectorRef, Component, ElementRef, Input, KeyValueDiffers, Renderer2 } from '@angular/core';
import { SvgIconRegistryService } from './svg-icon-registry.service';
export class SvgIconComponent {
/**
* @param {?} element
* @param {?} differs
* @param {?} renderer
* @param {?} iconReg
* @param {?} cdr
*/
constructor(element, differs, renderer, iconReg, cdr) {
this.element = element;
this.differs = differs;
this.renderer = renderer;
this.iconReg = iconReg;
this.cdr = cdr;
this.stretch = false;
this.applyCss = false;
}
// Adapted from ngStyle
/**
* @param {?} v
* @return {?}
*/
set svgStyle(v) {
this._svgStyle = v;
if (!this.differ && v) {
this.differ = this.differs.find(v).create();
}
}
/**
* @return {?}
*/
ngOnInit() {
this.init();
}
/**
* @return {?}
*/
ngOnDestroy() {
this.destroy();
}
/**
* @param {?} changeRecord
* @return {?}
*/
ngOnChanges(changeRecord) {
if (changeRecord.src || changeRecord.name) {
if (this.svg) {
this.destroy();
}
this.init();
}
if (changeRecord.stretch) {
this.stylize();
}
}
/**
* @return {?}
*/
ngDoCheck() {
if (this.svg && this.differ) {
/** @type {?} */
const changes = this.differ.diff(this._svgStyle);
if (changes) {
this.applyChanges(changes);
}
}
}
/**
* @private
* @return {?}
*/
init() {
if (this.name) {
this.icnSub = this.iconReg.getSvgByName(this.name).subscribe(this.initSvg.bind(this));
}
else if (this.src) {
this.icnSub = this.iconReg.loadSvg(this.src).subscribe(this.initSvg.bind(this));
}
}
/**
* @private
* @param {?} svg
* @return {?}
*/
initSvg(svg) {
this.setSvg(svg);
this.resetDiffer();
}
/**
* @private
* @return {?}
*/
destroy() {
this.svg = undefined;
this.differ = undefined;
if (this.icnSub) {
this.icnSub.unsubscribe();
}
}
/**
* @private
* @return {?}
*/
resetDiffer() {
if (this._svgStyle && !this.differ) {
this.differ = this.differs.find(this._svgStyle).create();
}
}
/**
* @private
* @param {?} svg
* @return {?}
*/
setSvg(svg) {
if (svg) {
this.svg = svg;
/** @type {?} */
const icon = (/** @type {?} */ (svg.cloneNode(true)));
/** @type {?} */
const elem = this.element.nativeElement;
if (this.applyCss) {
this.copyNgContentAttribute(elem, icon);
}
elem.innerHTML = '';
this.renderer.appendChild(elem, icon);
this.stylize();
this.cdr.markForCheck();
}
}
/**
* @private
* @param {?} hostElem
* @param {?} icon
* @return {?}
*/
copyNgContentAttribute(hostElem, icon) {
/** @type {?} */
const attributes = (/** @type {?} */ (hostElem.attributes));
/** @type {?} */
const len = attributes.length;
for (let i = 0; i < len; i += 1) {
/** @type {?} */
const attribute = attributes.item(i);
if (attribute.name.startsWith('_ngcontent')) {
this.setNgContentAttribute(icon, attribute.name);
break;
}
}
}
/**
* @private
* @param {?} parent
* @param {?} attributeName
* @return {?}
*/
setNgContentAttribute(parent, attributeName) {
this.renderer.setAttribute(parent, attributeName, '');
/** @type {?} */
const len = parent.childNodes.length;
for (let i = 0; i < len; i += 1) {
/** @type {?} */
const child = parent.childNodes[i];
if (child instanceof Element) {
this.setNgContentAttribute(child, attributeName);
}
}
}
/**
* @private
* @return {?}
*/
stylize() {
if (this.svg) {
/** @type {?} */
const svg = this.element.nativeElement.firstChild;
if (this.stretch === true) {
this.renderer.setAttribute(svg, 'preserveAspectRatio', 'none');
}
else if (this.stretch === false) {
this.renderer.removeAttribute(svg, 'preserveAspectRatio');
}
}
}
/**
* @private
* @param {?} changes
* @return {?}
*/
applyChanges(changes) {
changes.forEachRemovedItem((/**
* @param {?} record
* @return {?}
*/
(record) => this.setStyle(record.key, null)));
changes.forEachAddedItem((/**
* @param {?} record
* @return {?}
*/
(record) => this.setStyle(record.key, record.currentValue)));
changes.forEachChangedItem((/**
* @param {?} record
* @return {?}
*/
(record) => this.setStyle(record.key, record.currentValue)));
}
/**
* @private
* @param {?} nameAndUnit
* @param {?} value
* @return {?}
*/
setStyle(nameAndUnit, value) {
const [name, unit] = nameAndUnit.split('.');
value = value !== null && unit ? `${value}${unit}` : value;
/** @type {?} */
const svg = this.element.nativeElement.firstChild;
if (value !== null) {
this.renderer.setStyle(svg, name, (/** @type {?} */ (value)));
}
else {
this.renderer.removeStyle(svg, name);
}
}
}
SvgIconComponent.decorators = [
{ type: Component, args: [{
selector: 'svg-icon',
template: '<ng-content></ng-content>'
}] }
];
/** @nocollapse */
SvgIconComponent.ctorParameters = () => [
{ type: ElementRef },
{ type: KeyValueDiffers },
{ type: Renderer2 },
{ type: SvgIconRegistryService },
{ type: ChangeDetectorRef }
];
SvgIconComponent.propDecorators = {
src: [{ type: Input }],
name: [{ type: Input }],
stretch: [{ type: Input }],
applyCss: [{ type: Input }],
svgStyle: [{ type: Input }]
};
if (false) {
/** @type {?} */
SvgIconComponent.prototype.src;
/** @type {?} */
SvgIconComponent.prototype.name;
/** @type {?} */
SvgIconComponent.prototype.stretch;
/** @type {?} */
SvgIconComponent.prototype.applyCss;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.svg;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.icnSub;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.differ;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype._svgStyle;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.element;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.differs;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.renderer;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.iconReg;
/**
* @type {?}
* @private
*/
SvgIconComponent.prototype.cdr;
}
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{ ChangeDetectorRef, Component, DoCheck, ElementRef, HostBinding, Input,\n\tKeyValueChangeRecord, KeyValueChanges, KeyValueDiffer, KeyValueDiffers,\n\tOnChanges, OnDestroy, OnInit, Renderer2, SimpleChanges } from '@angular/core';\n\nimport { Subscription } from 'rxjs';\n\nimport { SvgIconRegistryService } from './svg-icon-registry.service';\n\n@Component({\n\tselector: 'svg-icon',\n\ttemplate: '<ng-content></ng-content>'\n})\nexport class SvgIconComponent implements OnInit, OnDestroy, OnChanges, DoCheck {\n\t@Input() src: string;\n\t@Input() name: string;\n\t@Input() stretch = false;\n\t@Input() applyCss = false;\n\n\t// Adapted from ngStyle\n\t@Input()\n\tset svgStyle(v: {[key: string]: string }) {\n\t\tthis._svgStyle = v;\n\t\tif (!this.differ && v) {\n\t\t\tthis.differ = this.differs.find(v).create();\n\t\t}\n\t}\n\n\tprivate svg: SVGElement;\n\tprivate icnSub: Subscription;\n\tprivate differ: KeyValueDiffer<string, string|number>;\n\tprivate _svgStyle: {[key: string]: string};\n\n\tconstructor(\n\t\tprivate element: ElementRef,\n\t\tprivate differs: KeyValueDiffers,\n\t\tprivate renderer: Renderer2,\n\t\tprivate iconReg: SvgIconRegistryService,\n\t\tprivate cdr: ChangeDetectorRef) {\n\t}\n\n\tngOnInit() {\n\t\tthis.init();\n\t}\n\n\tngOnDestroy() {\n\t\tthis.destroy();\n\t}\n\n\tngOnChanges(changeRecord: SimpleChanges) {\n\t\tif (changeRecord.src || changeRecord.name) {\n\t\t\tif (this.svg) {\n\t\t\t\tthis.destroy();\n\t\t\t}\n\t\t\tthis.init();\n\t\t}\n\t\tif (changeRecord.stretch) {\n\t\t\tthis.stylize();\n\t\t}\n\t}\n\n\tngDoCheck() {\n\t\tif (this.svg && this.differ) {\n\t\t\tconst changes = this.differ.diff(this._svgStyle);\n\t\t\tif (changes) {\n\t\t\t\tthis.applyChanges(changes);\n\t\t\t}\n\t\t}\n\t}\n\n\tprivate init() {\n\t\tif (this.name) {\n\t\t\tthis.icnSub = this.iconReg.getSvgByName(this.name).subscribe(this.initSvg.bind(this));\n\t\t} else if (this.src) {\n\t\t\tthis.icnSub = this.iconReg.loadSvg(this.src).subscribe(this.initSvg.bind(this));\n\t\t}\n\t}\n\n\tprivate initSvg(svg: SVGElement): void {\n\t\tthis.setSvg(svg);\n\t\tthis.resetDiffer();\n\t}\n\n\tprivate destroy() {\n\t\tthis.svg = undefined;\n\t\tthis.differ = undefined;\n\t\tif (this.icnSub) {\n\t\t\tthis.icnSub.unsubscribe();\n\t\t}\n\t}\n\n\tprivate resetDiffer() {\n\t\tif (this._svgStyle && !this.differ) {\n\t\t\tthis.differ = this.differs.find(this._svgStyle).create();\n\t\t}\n\t}\n\n\tprivate setSvg(svg: SVGElement) {\n\t\tif (svg) {\n\t\t\tthis.svg = svg;\n\t\t\tconst icon = svg.cloneNode(true) as SVGElement;\n\t\t\tconst elem = this.element.nativeElement;\n\n\t\t\tif (this.applyCss) {\n\t\t\t\tthis.copyNgContentAttribute(elem, icon);\n\t\t\t}\n\n\t\t\telem.innerHTML = '';\n\t\t\tthis.renderer.appendChild(elem, icon);\n\n\t\t\tthis.stylize();\n\t\t\tthis.cdr.markForCheck();\n\t\t}\n\t}\n\n\tprivate copyNgContentAttribute(hostElem: any, icon: SVGElement) {\n\t\tconst attributes = hostElem.attributes as NamedNodeMap;\n\t\tconst len = attributes.length;\n\t\tfor (let i = 0; i < len; i += 1) {\n\t\t\tconst attribute = attributes.item(i);\n\t\t\tif (attribute.name.startsWith('_ngcontent')) {\n\t\t\t\tthis.setNgContentAttribute(icon, attribute.name);\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\tprivate setNgContentAttribute(parent: Node, attributeName: string) {\n\t\tthis.renderer.setAttribute(parent, attributeName, '');\n\t\tconst len = parent.childNodes.length;\n\t\tfor (let i = 0; i < len; i += 1) {\n\t\t\tconst child = parent.childNodes[i];\n\t\t\tif (child instanceof Element) {\n\t\t\t\tthis.setNgContentAttribute(child, attributeName);\n\t\t\t}\n\t\t}\n\t}\n\n\tprivate stylize() {\n\t\tif (this.svg) {\n\t\t\tconst svg = this.element.nativeElement.firstChild;\n\n\t\t\tif (this.stretch === true) {\n\t\t\t\tthis.renderer.setAttribute(svg, 'preserveAspectRatio', 'none');\n\t\t\t} else if (this.stretch === false) {\n\t\t\t\tthis.renderer.removeAttribute(svg, 'preserveAspectRatio');\n\t\t\t}\n\t\t}\n\t}\n\n\tprivate applyChanges(changes: KeyValueChanges<string, string|number>) {\n\t\tchanges.forEachRemovedItem((record: KeyValueChangeRecord<string, string|number>) => this.setStyle(record.key, null));\n\t\tchanges.forEachAddedItem((record: KeyValueChangeRecord<string, string|number>) => this.setStyle(record.key, record.currentValue));\n\t\tchanges.forEachChangedItem((record: KeyValueChangeRecord<string, string|number>) => this.setStyle(record.key, record.currentValue));\n\t}\n\n\tprivate setStyle(nameAndUnit: string, value: string|number|null|undefined) {\n\t\tconst [name, unit] = nameAndUnit.split('.');\n\t\tvalue = value !== null && unit ? `${value}${unit}` : value;\n\t\tconst svg = this.element.nativeElement.firstChild;\n\n\t\tif (value !== null) {\n\t\t\tthis.renderer.setStyle(svg, name, value as string);\n\t\t} else {\n\t\t\tthis.renderer.removeStyle(svg, name);\n\t\t}\n\t}\n}\n"]}