@taiga-ui/cdk
Version:
Base library for creating Angular components and applications using Taiga UI principles regarding of actual visual appearance
125 lines • 15.9 kB
JavaScript
import { tuiIsPresent, tuiPx } from '@taiga-ui/cdk/utils';
import { AbstractTuiAutofocusHandler } from './abstract.handler';
const TEXTFIELD_ATTRS = [
'type',
'inputMode',
'autocomplete',
'accept',
'min',
'max',
'step',
'pattern',
'size',
'maxlength',
];
export class TuiIosAutofocusHandler extends AbstractTuiAutofocusHandler {
constructor(el, renderer, zone, win, options) {
super(el, options);
this.renderer = renderer;
this.zone = zone;
this.win = win;
}
setFocus() {
if (this.isTextFieldElement) {
this.zone.runOutsideAngular(() => this.iosWebkitAutofocus());
}
else {
this.element.focus({ preventScroll: true });
}
}
iosWebkitAutofocus() {
const fakeInput = this.makeFakeInput();
const duration = this.getDurationTimeBeforeFocus();
let fakeFocusTimeoutId = 0;
let elementFocusTimeoutId = 0;
const blurHandler = () => fakeInput.focus({ preventScroll: true });
const focusHandler = () => {
clearTimeout(fakeFocusTimeoutId);
fakeFocusTimeoutId = this.win.setTimeout(() => {
clearTimeout(elementFocusTimeoutId);
fakeInput.removeEventListener('blur', blurHandler);
fakeInput.removeEventListener('focus', focusHandler);
elementFocusTimeoutId = this.win.setTimeout(() => {
this.element.focus({ preventScroll: this.options.preventScroll });
fakeInput.remove();
}, duration);
});
};
fakeInput.addEventListener('blur', blurHandler, { once: true });
fakeInput.addEventListener('focus', focusHandler);
if (this.insideDialog()) {
this.win.document.body.appendChild(fakeInput);
}
else {
this.element.parentElement?.appendChild(fakeInput);
}
fakeInput.focus({ preventScroll: true });
}
/**
* @note:
* emulate textfield position in layout with cursor
* before focus to real textfield element
*
* required note:
* [fakeInput.readOnly = true] ~
* don't use {readOnly: true} value, it's doesn't work for emulate autofill
*
* [fakeInput.style.opacity = 0] ~
* don't use {opacity: 0}, sometimes it's doesn't work for emulate real input
*
* [fakeInput.style.fontSize = 16px] ~
* disable possible auto zoom
*
* [fakeInput.style.top/left] ~
* emulate position cursor before focus to real textfield element
*/
makeFakeInput() {
const fakeInput = this.renderer.createElement('input');
const rect = this.element.getBoundingClientRect();
this.patchFakeInputFromFocusableElement(fakeInput);
fakeInput.style.height = tuiPx(rect.height);
fakeInput.style.width = tuiPx(rect.width / 2);
fakeInput.style.position = 'fixed';
fakeInput.style.zIndex = '-99999999';
fakeInput.style.caretColor = 'transparent';
fakeInput.style.border = 'none';
fakeInput.style.outline = 'none';
fakeInput.style.color = 'transparent';
fakeInput.style.background = 'transparent';
fakeInput.style.cursor = 'none';
fakeInput.style.fontSize = tuiPx(16);
fakeInput.style.top = tuiPx(rect.top);
fakeInput.style.left = tuiPx(rect.left);
return fakeInput;
}
getDurationTimeBeforeFocus() {
return (parseFloat(this.win
.getComputedStyle(this.element)
.getPropertyValue('--tui-duration')) || 0);
}
/**
* @note:
* unfortunately, in older versions of iOS
* there is a bug that the fake input cursor
* will move along with the dialog animation
* and then that dialog will be shaking
*/
insideDialog() {
return !!this.element.closest('tui-dialog');
}
/**
* @note:
* inherit basic attributes values from real input
* for help iOS detect what do you want see on keyboard,
* for example [inputMode=numeric, autocomplete=cc-number]
*/
patchFakeInputFromFocusableElement(fakeInput) {
TEXTFIELD_ATTRS.forEach((attr) => {
const value = this.element.getAttribute(attr);
if (tuiIsPresent(value)) {
fakeInput.setAttribute(attr, value);
}
});
}
}
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type {ElementRef, NgZone, Renderer2} from '@angular/core';\nimport {tuiIsPresent, tuiPx} from '@taiga-ui/cdk/utils';\n\nimport type {TuiAutofocusOptions} from '../autofocus.options';\nimport {AbstractTuiAutofocusHandler} from './abstract.handler';\n\nconst TEXTFIELD_ATTRS = [\n    'type',\n    'inputMode',\n    'autocomplete',\n    'accept',\n    'min',\n    'max',\n    'step',\n    'pattern',\n    'size',\n    'maxlength',\n] as const;\n\nexport class TuiIosAutofocusHandler extends AbstractTuiAutofocusHandler {\n    constructor(\n        el: ElementRef<HTMLElement>,\n        private readonly renderer: Renderer2,\n        private readonly zone: NgZone,\n        private readonly win: Window,\n        options: TuiAutofocusOptions,\n    ) {\n        super(el, options);\n    }\n\n    public setFocus(): void {\n        if (this.isTextFieldElement) {\n            this.zone.runOutsideAngular(() => this.iosWebkitAutofocus());\n        } else {\n            this.element.focus({preventScroll: true});\n        }\n    }\n\n    private iosWebkitAutofocus(): void {\n        const fakeInput: HTMLInputElement = this.makeFakeInput();\n        const duration = this.getDurationTimeBeforeFocus();\n        let fakeFocusTimeoutId = 0;\n        let elementFocusTimeoutId = 0;\n\n        const blurHandler = (): void => fakeInput.focus({preventScroll: true});\n        const focusHandler = (): void => {\n            clearTimeout(fakeFocusTimeoutId);\n\n            fakeFocusTimeoutId = this.win.setTimeout(() => {\n                clearTimeout(elementFocusTimeoutId);\n\n                fakeInput.removeEventListener('blur', blurHandler);\n                fakeInput.removeEventListener('focus', focusHandler);\n\n                elementFocusTimeoutId = this.win.setTimeout(() => {\n                    this.element.focus({preventScroll: this.options.preventScroll});\n                    fakeInput.remove();\n                }, duration);\n            });\n        };\n\n        fakeInput.addEventListener('blur', blurHandler, {once: true});\n        fakeInput.addEventListener('focus', focusHandler);\n\n        if (this.insideDialog()) {\n            this.win.document.body.appendChild(fakeInput);\n        } else {\n            this.element.parentElement?.appendChild(fakeInput);\n        }\n\n        fakeInput.focus({preventScroll: true});\n    }\n\n    /**\n     * @note:\n     * emulate textfield position in layout with cursor\n     * before focus to real textfield element\n     *\n     * required note:\n     * [fakeInput.readOnly = true] ~\n     * don't use {readOnly: true} value, it's doesn't work for emulate autofill\n     *\n     * [fakeInput.style.opacity = 0] ~\n     * don't use {opacity: 0}, sometimes it's doesn't work for emulate real input\n     *\n     * [fakeInput.style.fontSize = 16px] ~\n     * disable possible auto zoom\n     *\n     * [fakeInput.style.top/left] ~\n     * emulate position cursor before focus to real textfield element\n     */\n    private makeFakeInput(): HTMLInputElement {\n        const fakeInput: HTMLInputElement = this.renderer.createElement('input');\n        const rect: DOMRect = this.element.getBoundingClientRect();\n\n        this.patchFakeInputFromFocusableElement(fakeInput);\n\n        fakeInput.style.height = tuiPx(rect.height);\n        fakeInput.style.width = tuiPx(rect.width / 2);\n        fakeInput.style.position = 'fixed';\n        fakeInput.style.zIndex = '-99999999';\n        fakeInput.style.caretColor = 'transparent';\n        fakeInput.style.border = 'none';\n        fakeInput.style.outline = 'none';\n        fakeInput.style.color = 'transparent';\n        fakeInput.style.background = 'transparent';\n        fakeInput.style.cursor = 'none';\n        fakeInput.style.fontSize = tuiPx(16);\n        fakeInput.style.top = tuiPx(rect.top);\n        fakeInput.style.left = tuiPx(rect.left);\n\n        return fakeInput;\n    }\n\n    private getDurationTimeBeforeFocus(): number {\n        return (\n            parseFloat(\n                this.win\n                    .getComputedStyle(this.element)\n                    .getPropertyValue('--tui-duration'),\n            ) || 0\n        );\n    }\n\n    /**\n     * @note:\n     * unfortunately, in older versions of iOS\n     * there is a bug that the fake input cursor\n     * will move along with the dialog animation\n     * and then that dialog will be shaking\n     */\n    private insideDialog(): boolean {\n        return !!this.element.closest('tui-dialog');\n    }\n\n    /**\n     * @note:\n     * inherit basic attributes values from real input\n     * for help iOS detect what do you want see on keyboard,\n     * for example [inputMode=numeric, autocomplete=cc-number]\n     */\n    private patchFakeInputFromFocusableElement(fakeInput: HTMLInputElement): void {\n        TEXTFIELD_ATTRS.forEach((attr) => {\n            const value = this.element.getAttribute(attr);\n\n            if (tuiIsPresent(value)) {\n                fakeInput.setAttribute(attr, value);\n            }\n        });\n    }\n}\n"]}