carbon-components-angular
Version:
Next generation components
127 lines • 14.7 kB
JavaScript
import { Directive, Input } from "@angular/core";
import { getAttributes } from "@carbon/icon-helpers";
import * as i0 from "@angular/core";
import * as i1 from "./icon.service";
/**
* A directive for populating a svg element based on the provided carbon icon name.
*
* Get started with importing the module:
*
* ```typescript
* import { IconModule } from 'carbon-components-angular';
* ```
*
* [See demo](../../?path=/story/components-icon--basic)
*/
export class IconDirective {
constructor(elementRef, iconService) {
this.elementRef = elementRef;
this.iconService = iconService;
this.cdsIcon = "";
this.size = "16";
this.title = "";
this.ariaLabel = "";
this.ariaLabelledBy = "";
this.ariaHidden = "";
this.isFocusable = false;
}
/**
* @deprecated since v5 - Use `cdsIcon` input property instead
*/
set ibmIcon(iconName) {
this.cdsIcon = iconName;
}
renderIcon(iconName) {
const root = this.elementRef.nativeElement;
let icon;
try {
icon = this.iconService.get(iconName, this.size.toString());
}
catch (error) {
console.warn(error);
// bail out
return;
}
const domParser = new DOMParser();
const rawSVG = icon.svg;
const svgElement = domParser.parseFromString(rawSVG, "image/svg+xml").documentElement;
let node = root.tagName.toUpperCase() !== "SVG" ? svgElement : svgElement.firstChild;
root.innerHTML = ""; // Clear root element
while (node) {
// importNode makes a clone of the node
// this ensures we keep looping over the nodes in the parsed document
root.appendChild(root.ownerDocument.importNode(node, true));
// type the node because the angular compiler freaks out if it
// ends up thinking it's a `Node` instead of a `ChildNode`
node = node.nextSibling;
}
const svg = root.tagName.toUpperCase() !== "SVG" ? svgElement : root;
svg.setAttribute("xmlns", "http://www.w3.org/2000/svg");
const attributes = getAttributes({
width: icon.attrs.width,
height: icon.attrs.height,
viewBox: icon.attrs.viewBox,
title: this.title,
"aria-label": this.ariaLabel,
"aria-labelledby": this.ariaLabelledBy,
"aria-hidden": this.ariaHidden,
focusable: this.isFocusable.toString()
});
const attrKeys = Object.keys(attributes);
for (let i = 0; i < attrKeys.length; i++) {
const key = attrKeys[i];
const value = attributes[key];
if (key === "title") {
continue;
}
if (value) {
svg.setAttribute(key, value);
}
}
if (attributes["title"]) {
const title = document.createElement("title");
title.textContent = attributes.title;
IconDirective.titleIdCounter++;
title.setAttribute("id", `${icon.name}-title-${IconDirective.titleIdCounter}`);
// title must be first for screen readers
svg.insertBefore(title, svg.firstElementChild);
svg.setAttribute("aria-labelledby", `${icon.name}-title-${IconDirective.titleIdCounter}`);
}
}
ngAfterViewInit() {
this.renderIcon(this.cdsIcon);
}
ngOnChanges({ cdsIcon }) {
// We want to ignore first change to let the icon register
// and add only after view has been initialized
if (cdsIcon && !cdsIcon.isFirstChange()) {
this.renderIcon(this.cdsIcon);
}
}
}
IconDirective.titleIdCounter = 0;
IconDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: IconDirective, deps: [{ token: i0.ElementRef }, { token: i1.IconService }], target: i0.ɵɵFactoryTarget.Directive });
IconDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.3.0", type: IconDirective, selector: "[cdsIcon], [ibmIcon]", inputs: { ibmIcon: "ibmIcon", cdsIcon: "cdsIcon", size: "size", title: "title", ariaLabel: "ariaLabel", ariaLabelledBy: "ariaLabelledBy", ariaHidden: "ariaHidden", isFocusable: "isFocusable" }, usesOnChanges: true, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: IconDirective, decorators: [{
type: Directive,
args: [{
selector: "[cdsIcon], [ibmIcon]"
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.IconService }]; }, propDecorators: { ibmIcon: [{
type: Input
}], cdsIcon: [{
type: Input
}], size: [{
type: Input
}], title: [{
type: Input
}], ariaLabel: [{
type: Input
}], ariaLabelledBy: [{
type: Input
}], ariaHidden: [{
type: Input
}], isFocusable: [{
type: Input
}] } });
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Use `cdsIcon` input property instead\n\t */\n\t@Input() set ibmIcon(iconName: string) {\n\t\tthis.cdsIcon = iconName;\n\t}\n\n\tstatic titleIdCounter = 0;\n\n\t@Input() cdsIcon = \"\";\n\n\t@Input() size = \"16\";\n\n\t@Input() title = \"\";\n\n\t@Input() ariaLabel = \"\";\n\n\t@Input() ariaLabelledBy = \"\";\n\n\t@Input() ariaHidden = \"\";\n\n\t@Input() isFocusable = false;\n\n\tconstructor(\n\t\tprotected elementRef: ElementRef,\n\t\tprotected iconService: IconService\n\t) {}\n\n\trenderIcon(iconName: string) {\n\t\tconst root = this.elementRef.nativeElement as HTMLElement;\n\n\t\tlet icon;\n\t\ttry {\n\t\t\ticon = this.iconService.get(iconName, this.size.toString());\n\t\t} catch (error) {\n\t\t\tconsole.warn(error);\n\t\t\t// bail out\n\t\t\treturn;\n\t\t}\n\n\t\tconst domParser = new DOMParser();\n\t\tconst rawSVG = icon.svg;\n\t\tconst svgElement = domParser.parseFromString(rawSVG, \"image/svg+xml\").documentElement;\n\n\t\tlet node: ChildNode = root.tagName.toUpperCase() !== \"SVG\" ? svgElement : svgElement.firstChild;\n\t\troot.innerHTML = \"\"; // Clear root element\n\t\twhile (node) {\n\t\t\t// importNode makes a clone of the node\n\t\t\t// this ensures we keep looping over the nodes in the parsed document\n\t\t\troot.appendChild(root.ownerDocument.importNode(node, true));\n\t\t\t// type the node because the angular compiler freaks out if it\n\t\t\t// ends up thinking it's a `Node` instead of a `ChildNode`\n\t\t\tnode = node.nextSibling as ChildNode;\n\t\t}\n\n\t\tconst svg = root.tagName.toUpperCase() !== \"SVG\" ? svgElement : root;\n\t\tsvg.setAttribute(\"xmlns\", \"http://www.w3.org/2000/svg\");\n\n\t\tconst attributes = getAttributes({\n\t\t\twidth: icon.attrs.width,\n\t\t\theight: icon.attrs.height,\n\t\t\tviewBox: icon.attrs.viewBox,\n\t\t\ttitle: this.title,\n\t\t\t\"aria-label\": this.ariaLabel,\n\t\t\t\"aria-labelledby\": this.ariaLabelledBy,\n\t\t\t\"aria-hidden\": this.ariaHidden,\n\t\t\tfocusable: this.isFocusable.toString()\n\t\t});\n\n\t\tconst attrKeys = Object.keys(attributes);\n\t\tfor (let i = 0; i < attrKeys.length; i++) {\n\t\t\tconst key = attrKeys[i];\n\t\t\tconst value = attributes[key];\n\n\t\t\tif (key === \"title\") {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tif (value) {\n\t\t\t\tsvg.setAttribute(key, value);\n\t\t\t}\n\t\t}\n\n\t\tif (attributes[\"title\"]) {\n\t\t\tconst title = document.createElement(\"title\");\n\t\t\ttitle.textContent = attributes.title;\n\t\t\tIconDirective.titleIdCounter++;\n\t\t\ttitle.setAttribute(\"id\", `${icon.name}-title-${IconDirective.titleIdCounter}`);\n\t\t\t// title must be first for screen readers\n\t\t\tsvg.insertBefore(title, svg.firstElementChild);\n\t\t\tsvg.setAttribute(\"aria-labelledby\", `${icon.name}-title-${IconDirective.titleIdCounter}`);\n\t\t}\n\t}\n\n\tngAfterViewInit() {\n\t\tthis.renderIcon(this.cdsIcon);\n\t}\n\n\tngOnChanges({ cdsIcon }: SimpleChanges) {\n\t\t// We want to ignore first change to let the icon register\n\t\t// and add only after view has been initialized\n\t\tif (cdsIcon && !cdsIcon.isFirstChange()) {\n\t\t\tthis.renderIcon(this.cdsIcon);\n\t\t}\n\t}\n}\n"]}