gentics-ui-core
Version:
This is the common core framework for the Gentics CMS and Mesh UI, and other Angular applications.
216 lines • 24.5 kB
JavaScript
import { ChangeDetectorRef, Component, ElementRef, EventEmitter, forwardRef, HostListener, Input, Output, ViewChild } from '@angular/core';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import { KeyCode } from '../../common/keycodes';
import * as i0 from "@angular/core";
const GTX_CHECKBOX_VALUE_ACCESSOR = {
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef(() => Checkbox),
multi: true
};
/**
* Checkbox wraps the native `<input type="checkbox">` form element.
*
* ```html
* <gtx-checkbox [(ngModel)]="isOkay" label="Is it okay?"></gtx-checkbox>
* <gtx-checkbox [(ngModel)]="checkStates.B" value="B" label="B"></gtx-checkbox>
* ```
*
* ## Stateless Mode
* By default, the Checkbox keeps track of its own internal checked state. This makes sense
* for most use cases, such as when used in a form bound to NgControl.
*
* However, in some cases we want to explicitly set the state from outside. This is done by binding
* to the <code>checked</code> attribute. When this attribute is bound, the checked state of the
* Checkbox will *only* change when the value of the binding changes. Clicking on the Checkbox
* will have no effect other than to emit an event which the parent can use to update the binding.
*
* Here is a basic example of a stateless checkbox where the parent component manages the state:
*
* ```html
* <gtx-checkbox [checked]="isChecked"
* (change)="isChecked = $event"></gtx-checkbox>
* ```
*/
export class Checkbox {
constructor(changeDetector) {
this.changeDetector = changeDetector;
/**
* Sets the checkbox to be auto-focused. Handled by `AutofocusDirective`.
*/
this.autofocus = false;
/**
* Set the checkbox to its disabled state.
*/
this.disabled = false;
/**
* Checkbox ID
*/
this.id = randomID();
/**
* Label for the checkbox
*/
this.label = '';
/**
* Sets the required property
*/
this.required = false;
/**
* The value of the checkbox
*/
this.value = '';
/**
* Blur event
*/
this.blur = new EventEmitter();
/**
* Focus event
*/
this.focus = new EventEmitter();
/**
* Change event
*/
this.change = new EventEmitter();
this.checkState = false;
this.tabbedFocus = false;
/**
* See note above on stateless mode.
*/
this.statelessMode = false;
this.onChange = () => { };
this.onTouched = () => { };
}
/**
* Checked state of the checkbox. When set, the Checkbox will be
* in stateless mode.
*/
get checked() {
return this.checkState === true;
}
set checked(value) {
this.statelessMode = true;
let val = value;
let nowChecked = val === true || val === 'true' || val === '';
if (nowChecked != this.checkState) {
this.onChange(this.checkState = nowChecked);
this.changeDetector.markForCheck();
}
}
/**
* Set to "indeterminate" for an indeterminate state (-)
*/
get indeterminate() {
return this.checkState === 'indeterminate';
}
set indeterminate(val) {
if (val != (this.checkState === 'indeterminate')) {
this.checkState = val ? 'indeterminate' : false;
this.change.emit(this.checkState);
this.onChange(this.checkState);
}
}
onBlur() {
this.blur.emit(this.checkState);
this.onTouched();
this.tabbedFocus = false;
}
onFocus() {
this.focus.emit(this.checkState);
}
focusHandler(e) {
if (e.keyCode === KeyCode.Tab) {
if (!this.tabbedFocus) {
this.tabbedFocus = true;
}
}
}
writeValue(value) {
if (value !== this.checkState) {
this.checkState = value;
this.changeDetector.markForCheck();
}
}
ngOnInit() {
this.onChange(this.checkState);
}
ngAfterViewInit() {
this.fixInitialAnimation();
}
onInputChanged(e, input) {
if (e) {
e.stopPropagation();
}
let newState = input.indeterminate ? 'indeterminate' : input.checked;
if (this.statelessMode) {
if (input.checked !== this.checkState) {
input.checked = !!this.checkState;
}
this.change.emit(newState);
return false;
}
if (newState != this.checkState) {
this.checkState = newState;
this.onChange(newState);
this.change.emit(newState);
return true;
}
}
registerOnChange(fn) { this.onChange = fn; }
registerOnTouched(fn) { this.onTouched = fn; }
setDisabledState(disabled) {
this.disabled = disabled;
this.changeDetector.markForCheck();
}
/**
* This is a hacky fix to prevent Materialize from animating ticked checkboxes which
* kicks in when a checkbox is added to the dom with checked=false and immediately
* set to checked=true.
*/
fixInitialAnimation() {
if (this.labelElement && this.labelElement.nativeElement) {
let label = this.labelElement.nativeElement;
label.style.display = 'none';
let ignored = label.offsetWidth;
label.style.display = '';
}
}
}
/** @nocollapse */ Checkbox.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.3.8", ngImport: i0, type: Checkbox, deps: [{ token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Component });
/** @nocollapse */ Checkbox.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.3.8", type: Checkbox, selector: "gtx-checkbox", inputs: { autofocus: "autofocus", checked: "checked", indeterminate: "indeterminate", disabled: "disabled", id: "id", label: "label", name: "name", required: "required", value: "value" }, outputs: { blur: "blur", focus: "focus", change: "change" }, host: { listeners: { "keyup": "focusHandler($event)" } }, providers: [GTX_CHECKBOX_VALUE_ACCESSOR], viewQueries: [{ propertyName: "labelElement", first: true, predicate: ["labelElement"], descendants: true, static: true }], ngImport: i0, template: "<div>\n <input type=\"checkbox\"\n [attr.id]=\"id\"\n [attr.name]=\"name\"\n [checked]=\"checkState === true\"\n [indeterminate]=\"checkState === 'indeterminate'\"\n [disabled]=\"disabled\"\n [required]=\"required\"\n [value]=\"value\"\n\n (blur)=\"onBlur()\"\n (focus)=\"onFocus()\"\n (change)=\"onInputChanged($event, input)\"\n\n [class.tabbed]=\"tabbedFocus\"\n\n #input\n >\n <label [attr.for]=\"id\" #labelElement>{{ label }}</label>\n</div>\n" });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.3.8", ngImport: i0, type: Checkbox, decorators: [{
type: Component,
args: [{ selector: 'gtx-checkbox', providers: [GTX_CHECKBOX_VALUE_ACCESSOR], template: "<div>\n <input type=\"checkbox\"\n [attr.id]=\"id\"\n [attr.name]=\"name\"\n [checked]=\"checkState === true\"\n [indeterminate]=\"checkState === 'indeterminate'\"\n [disabled]=\"disabled\"\n [required]=\"required\"\n [value]=\"value\"\n\n (blur)=\"onBlur()\"\n (focus)=\"onFocus()\"\n (change)=\"onInputChanged($event, input)\"\n\n [class.tabbed]=\"tabbedFocus\"\n\n #input\n >\n <label [attr.for]=\"id\" #labelElement>{{ label }}</label>\n</div>\n" }]
}], ctorParameters: function () { return [{ type: i0.ChangeDetectorRef }]; }, propDecorators: { autofocus: [{
type: Input
}], checked: [{
type: Input
}], indeterminate: [{
type: Input
}], disabled: [{
type: Input
}], id: [{
type: Input
}], label: [{
type: Input
}], name: [{
type: Input
}], required: [{
type: Input
}], value: [{
type: Input
}], blur: [{
type: Output
}], focus: [{
type: Output
}], change: [{
type: Output
}], labelElement: [{
type: ViewChild,
args: ['labelElement', { static: true }]
}], focusHandler: [{
type: HostListener,
args: ['keyup', ['$event']]
}] } });
function randomID() {
return 'checkbox-' + Math.random().toString(36).substr(2);
}
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{\n    ChangeDetectorRef,\n    Component,\n    ElementRef,\n    EventEmitter,\n    forwardRef,\n    HostListener,\n    Input,\n    Output,\n    ViewChild\n} from '@angular/core';\nimport {ControlValueAccessor, NG_VALUE_ACCESSOR} from '@angular/forms';\nimport {KeyCode} from '../../common/keycodes';\n\nexport type CheckState = boolean | 'indeterminate';\n\nconst GTX_CHECKBOX_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => Checkbox),\n    multi: true\n};\n\n/**\n * Checkbox wraps the native `<input type=\"checkbox\">` form element.\n *\n * ```html\n * <gtx-checkbox [(ngModel)]=\"isOkay\" label=\"Is it okay?\"></gtx-checkbox>\n * <gtx-checkbox [(ngModel)]=\"checkStates.B\" value=\"B\" label=\"B\"></gtx-checkbox>\n * ```\n *\n * ## Stateless Mode\n * By default, the Checkbox keeps track of its own internal checked state. This makes sense\n * for most use cases, such as when used in a form bound to NgControl.\n *\n * However, in some cases we want to explicitly set the state from outside. This is done by binding\n * to the <code>checked</code> attribute. When this attribute is bound, the checked state of the\n * Checkbox will *only* change when the value of the binding changes. Clicking on the Checkbox\n * will have no effect other than to emit an event which the parent can use to update the binding.\n *\n * Here is a basic example of a stateless checkbox where the parent component manages the state:\n *\n * ```html\n * <gtx-checkbox [checked]=\"isChecked\"\n *               (change)=\"isChecked = $event\"></gtx-checkbox>\n * ```\n */\n@Component({\n    selector: 'gtx-checkbox',\n    templateUrl: './checkbox.tpl.html',\n    providers: [GTX_CHECKBOX_VALUE_ACCESSOR]\n})\nexport class Checkbox implements ControlValueAccessor {\n    /**\n     * Sets the checkbox to be auto-focused. Handled by `AutofocusDirective`.\n     */\n    @Input() autofocus: boolean = false;\n\n    /**\n     * Checked state of the checkbox. When set, the Checkbox will be\n     * in stateless mode.\n     */\n    @Input() get checked(): boolean {\n        return this.checkState === true;\n    }\n    set checked(value: boolean) {\n        this.statelessMode = true;\n        let val: boolean | 'true' | '' | 'indeterminate' = <any> value;\n        let nowChecked = val === true || <any> val === 'true' || <any> val === '';\n        if (nowChecked != this.checkState) {\n            this.onChange(this.checkState = nowChecked);\n            this.changeDetector.markForCheck();\n        }\n    }\n\n    /**\n     * Set to \"indeterminate\" for an indeterminate state (-)\n     */\n    @Input() get indeterminate(): boolean {\n        return this.checkState === 'indeterminate';\n    }\n    set indeterminate(val: boolean) {\n        if (val != (this.checkState === 'indeterminate')) {\n            this.checkState = val ? 'indeterminate' : false;\n            this.change.emit(this.checkState);\n            this.onChange(this.checkState);\n        }\n    }\n\n    /**\n     * Set the checkbox to its disabled state.\n     */\n    @Input() disabled: boolean = false;\n    /**\n     * Checkbox ID\n     */\n    @Input() id: string = randomID();\n    /**\n     * Label for the checkbox\n     */\n    @Input() label: string = '';\n    /**\n     * Form name for the checkbox\n     */\n    @Input() name: string;\n    /**\n     * Sets the required property\n     */\n    @Input() required: boolean = false;\n    /**\n     * The value of the checkbox\n     */\n    @Input() value: any = '';\n\n    /**\n     * Blur event\n     */\n    @Output() blur = new EventEmitter<CheckState>();\n    /**\n     * Focus event\n     */\n    @Output() focus = new EventEmitter<CheckState>();\n    /**\n     * Change event\n     */\n    @Output() change = new EventEmitter<CheckState>();\n\n    checkState: CheckState = false;\n    tabbedFocus: boolean = false;\n\n    @ViewChild('labelElement', { static: true }) labelElement: ElementRef;\n\n    /**\n     * See note above on stateless mode.\n     */\n    private statelessMode: boolean = false;\n\n\n    constructor(private changeDetector: ChangeDetectorRef) { }\n\n    onBlur(): void {\n        this.blur.emit(this.checkState);\n        this.onTouched();\n        this.tabbedFocus = false;\n    }\n\n    onFocus(): void {\n        this.focus.emit(this.checkState);\n    }\n\n    @HostListener('keyup', ['$event'])\n    focusHandler(e: KeyboardEvent): void {\n        if (e.keyCode === KeyCode.Tab) {\n            if (!this.tabbedFocus) {\n                this.tabbedFocus = true;\n            }\n        }\n    }\n\n    writeValue(value: any): void {\n        if (value !== this.checkState) {\n            this.checkState = value;\n            this.changeDetector.markForCheck();\n        }\n    }\n\n    ngOnInit(): void {\n        this.onChange(this.checkState);\n    }\n\n    ngAfterViewInit(): void {\n        this.fixInitialAnimation();\n    }\n\n    onInputChanged(e: Event, input: HTMLInputElement): boolean {\n        if (e) {\n            e.stopPropagation();\n        }\n        let newState: CheckState = input.indeterminate ? 'indeterminate' : input.checked;\n        if (this.statelessMode) {\n            if (input.checked !== this.checkState) {\n                input.checked = !!this.checkState;\n            }\n            this.change.emit(newState);\n            return false;\n        }\n        if (newState != this.checkState) {\n            this.checkState = newState;\n            this.onChange(newState);\n            this.change.emit(newState);\n            return true;\n        }\n    }\n\n    registerOnChange(fn: Function): void { this.onChange = fn; }\n    registerOnTouched(fn: Function): void { this.onTouched = fn; }\n    setDisabledState(disabled: boolean): void {\n        this.disabled = disabled;\n        this.changeDetector.markForCheck();\n    }\n\n    private onChange: Function = () => {};\n    private onTouched: Function = () => {};\n\n    /**\n     * This is a hacky fix to prevent Materialize from animating ticked checkboxes which\n     * kicks in when a checkbox is added to the dom with checked=false and immediately\n     * set to checked=true.\n     */\n    private fixInitialAnimation(): void {\n        if (this.labelElement && this.labelElement.nativeElement) {\n            let label: HTMLLabelElement = this.labelElement.nativeElement;\n            label.style.display = 'none';\n            let ignored = label.offsetWidth;\n            label.style.display = '';\n        }\n    }\n}\n\nfunction randomID(): string {\n    return 'checkbox-' + Math.random().toString(36).substr(2);\n}\n","<div>\n    <input type=\"checkbox\"\n           [attr.id]=\"id\"\n           [attr.name]=\"name\"\n           [checked]=\"checkState === true\"\n           [indeterminate]=\"checkState === 'indeterminate'\"\n           [disabled]=\"disabled\"\n           [required]=\"required\"\n           [value]=\"value\"\n\n           (blur)=\"onBlur()\"\n           (focus)=\"onFocus()\"\n           (change)=\"onInputChanged($event, input)\"\n\n           [class.tabbed]=\"tabbedFocus\"\n\n           #input\n    >\n    <label [attr.for]=\"id\" #labelElement>{{ label }}</label>\n</div>\n"]}