@tarienna/ng-tri-state-checkbox
Version:
A TriStateCheckbox for Angular 9
170 lines • 21.2 kB
JavaScript
var NgTriStateCheckboxComponent_1;
import { __decorate } from "tslib";
import { Component, ElementRef, forwardRef, Input, OnDestroy, Renderer2, ViewChild, ViewEncapsulation } from '@angular/core';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import { TriStateCheckboxState } from './tri-state-checkbox.types';
let NgTriStateCheckboxComponent = NgTriStateCheckboxComponent_1 = class NgTriStateCheckboxComponent {
constructor(renderer) {
this.renderer = renderer;
this.checkboxClass = 'tri-state-checkbox-default';
this._isDisabled = false;
this.controls = new Map();
this.currentState = TriStateCheckboxState.NONE;
this.onChanged = (_) => { };
this.onTouched = () => { };
}
ngOnDestroy() {
this.controls.clear();
}
registerOnChange(fn) {
if (typeof fn === 'function') {
this.onChanged = fn;
}
else {
this.onChanged = (_) => { };
}
}
registerOnTouched(fn) {
if (typeof fn === 'function') {
this.onTouched = fn;
}
else {
this.onTouched = () => { };
}
}
setDisabledState(isDisabled) {
this._isDisabled = isDisabled;
for (const currentControl of this.controls.keys()) {
currentControl.setDisabled(isDisabled);
}
}
get isDisabled() {
return this._isDisabled;
}
addControl(control) {
if (!!control) {
this.controls.set(control, control.readValue());
this.refreshState();
setTimeout(() => {
this.emitValueChanged();
});
}
}
removeControl(control) {
this.controls.delete(control);
this.refreshState();
setTimeout(() => {
this.emitValueChanged();
});
}
changeControlValue(control, value) {
this.controls.set(control, value);
this.refreshState();
this.emitValueChanged();
}
refreshState() {
this.currentState = this.getState();
this.refreshCheckboxState();
}
getState() {
let anyWasFalse = false;
let result = TriStateCheckboxState.NONE;
for (const currentValue of this.controls.values()) {
if (!!currentValue) {
result = TriStateCheckboxState.SOME;
}
if (!currentValue) {
anyWasFalse = true;
}
}
if (!anyWasFalse && result === TriStateCheckboxState.SOME) {
result = TriStateCheckboxState.ALL;
}
return result;
}
onClick() {
const currentState = this.getState();
if (currentState === TriStateCheckboxState.SOME || currentState === TriStateCheckboxState.ALL) {
// gets unselected
this.writeAllControlValues(false);
this.currentState = TriStateCheckboxState.NONE;
}
else if (currentState === TriStateCheckboxState.NONE) {
this.writeAllControlValues(true);
this.currentState = TriStateCheckboxState.ALL;
}
this.refreshCheckboxState();
this.emitValueChanged();
}
writeAllControlValues(nValue) {
for (const currentControl of this.controls.keys()) {
if (currentControl) {
currentControl.writeValue(nValue);
}
}
}
refreshCheckboxState() {
if (this.customCheckbox && this.customCheckbox.nativeElement) {
let checked = false;
let indeterminate = false;
if (this.currentState === TriStateCheckboxState.ALL) {
checked = true;
indeterminate = false;
}
else if (this.currentState === TriStateCheckboxState.SOME) {
checked = true;
indeterminate = true;
}
this.renderer.setProperty(this.customCheckbox.nativeElement, 'checked', checked);
// Browser Support for indeterminate: https://caniuse.com/#search=indeterminate
this.customCheckbox.nativeElement.indeterminate = indeterminate;
}
}
emitValueChanged() {
const values = [];
for (const value of this.controls.values()) {
if (!!value) {
values.push(value);
}
}
this.onChanged(values);
this.onTouched();
}
reset() {
this.writeAllControlValues(false);
this.refreshState();
this.emitValueChanged();
}
writeValue(obj) {
if (!!obj && obj.hasOwnProperty('length') && obj.length > 0) {
console.warn('It\'s currently not possible to set values. Maybe later there is a solution to do that.');
}
}
};
NgTriStateCheckboxComponent.ctorParameters = () => [
{ type: Renderer2 }
];
__decorate([
Input()
], NgTriStateCheckboxComponent.prototype, "checkboxClass", void 0);
__decorate([
ViewChild('customCheckbox', { static: false })
], NgTriStateCheckboxComponent.prototype, "customCheckbox", void 0);
NgTriStateCheckboxComponent = NgTriStateCheckboxComponent_1 = __decorate([
Component({
selector: 'ng-tri-state-checkbox',
template: "<input type=\"checkbox\" [class]=\"checkboxClass\" (change)=\"onClick()\" #customCheckbox [disabled]=\"isDisabled\">\n",
providers: [
{
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef(() => NgTriStateCheckboxComponent_1),
multi: true
}
],
exportAs: 'ngTriStateCheckbox',
encapsulation: ViewEncapsulation.None,
styles: [".tri-state-checkbox-default{height:1rem;width:1rem;display:block;position:relative;pointer-events:auto;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:#fff;background-image:none;border:1px solid #adb5bd;border-radius:.15rem;box-sizing:border-box}.tri-state-checkbox-default:checked:not(:indeterminate){background-color:#0099da;color:#fff}.tri-state-checkbox-default:checked:not(:indeterminate):after{content:\"\";display:block;position:absolute;top:-1px;left:-1px;width:1rem;height:1rem;pointer-events:none;color:#fff;background-color:#0099da;background-repeat:no-repeat;background-size:50% 50%;background-position:50%;background-image:url(\"data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23fff' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26 2.974 7.25 8 2.193z'/%3e%3c/svg%3e\");border:1px solid #0099da;border-radius:.15rem}.tri-state-checkbox-default:indeterminate{background-color:#fff;color:#adb5bd;border-color:#0099da}.tri-state-checkbox-default:indeterminate:after{content:\"\";display:block;position:absolute;top:calc(.225rem - 1px);left:calc(.225rem - 1px);width:.55rem;height:.55rem;pointer-events:none;background-color:#0099da;border:1px solid #0099da;border-radius:.15rem}"]
})
], NgTriStateCheckboxComponent);
export { NgTriStateCheckboxComponent };
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{ Component, ElementRef, forwardRef, Input, OnDestroy, Renderer2, ViewChild, ViewEncapsulation } from '@angular/core';\nimport { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';\nimport { TriStateCheckboxState, ITriStateCheckboxControl, ITriCheckboxRegister } from './tri-state-checkbox.types';\n\n@Component({\n    selector: 'ng-tri-state-checkbox',\n    templateUrl: './ng-tri-state-checkbox.component.html',\n    styleUrls: ['./ng-tri-state-checkbox.component.scss'],\n    providers: [\n        {\n            provide: NG_VALUE_ACCESSOR,\n            useExisting: forwardRef(() => NgTriStateCheckboxComponent),\n            multi: true\n        }\n    ],\n    exportAs: 'ngTriStateCheckbox',\n    encapsulation: ViewEncapsulation.None\n})\nexport class NgTriStateCheckboxComponent implements OnDestroy, ControlValueAccessor, ITriCheckboxRegister {\n    @Input()\n    checkboxClass = 'tri-state-checkbox-default';\n\n    private _isDisabled = false;\n\n    controls: Map<ITriStateCheckboxControl, any> = new Map<ITriStateCheckboxControl, any>();\n\n    currentState: TriStateCheckboxState = TriStateCheckboxState.NONE;\n\n    @ViewChild('customCheckbox', { static: false })\n    customCheckbox: ElementRef;\n\n    onChanged: (_: any) => void = (_: any) => {};\n    onTouched: () => void = () => {};\n\n    constructor(protected renderer: Renderer2) {}\n\n    ngOnDestroy(): void {\n        this.controls.clear();\n    }\n\n    registerOnChange(fn: any): void {\n        if (typeof fn === 'function') {\n            this.onChanged = fn;\n        } else {\n            this.onChanged = (_: any) => {};\n        }\n    }\n\n    registerOnTouched(fn: any): void {\n        if (typeof fn === 'function') {\n            this.onTouched = fn;\n        } else {\n            this.onTouched = () => {};\n        }\n    }\n\n    setDisabledState(isDisabled: boolean): void {\n        this._isDisabled = isDisabled;\n        for (const currentControl of this.controls.keys()) {\n            currentControl.setDisabled(isDisabled);\n        }\n    }\n\n    get isDisabled() {\n        return this._isDisabled;\n    }\n\n    addControl(control: ITriStateCheckboxControl): void {\n        if (!!control) {\n            this.controls.set(control, control.readValue());\n            this.refreshState();\n            setTimeout(() => {\n                this.emitValueChanged();\n            });\n        }\n    }\n\n    removeControl(control: ITriStateCheckboxControl): void {\n        this.controls.delete(control);\n        this.refreshState();\n        setTimeout(() => {\n            this.emitValueChanged();\n        });\n    }\n\n    changeControlValue(control: ITriStateCheckboxControl, value: any) {\n        this.controls.set(control, value);\n        this.refreshState();\n        this.emitValueChanged();\n    }\n\n    refreshState(): void {\n        this.currentState = this.getState();\n        this.refreshCheckboxState();\n    }\n\n    getState(): TriStateCheckboxState {\n        let anyWasFalse = false;\n        let result: TriStateCheckboxState = TriStateCheckboxState.NONE;\n\n        for (const currentValue of this.controls.values()) {\n            if (!!currentValue) {\n                result = TriStateCheckboxState.SOME;\n            }\n            if (!currentValue) {\n                anyWasFalse = true;\n            }\n        }\n\n        if (!anyWasFalse && result === TriStateCheckboxState.SOME) {\n            result = TriStateCheckboxState.ALL;\n        }\n\n        return result;\n    }\n\n    onClick(): void {\n        const currentState = this.getState();\n        if (currentState === TriStateCheckboxState.SOME || currentState === TriStateCheckboxState.ALL) {\n            // gets unselected\n            this.writeAllControlValues(false);\n            this.currentState = TriStateCheckboxState.NONE;\n        } else if (currentState === TriStateCheckboxState.NONE) {\n            this.writeAllControlValues(true);\n            this.currentState = TriStateCheckboxState.ALL;\n        }\n        this.refreshCheckboxState();\n        this.emitValueChanged();\n    }\n\n    public writeAllControlValues(nValue: boolean) {\n        for (const currentControl of this.controls.keys()) {\n            if (currentControl) {\n                currentControl.writeValue(nValue);\n            }\n        }\n    }\n\n    refreshCheckboxState() {\n        if (this.customCheckbox && this.customCheckbox.nativeElement) {\n            let checked = false;\n            let indeterminate = false;\n            if (this.currentState === TriStateCheckboxState.ALL) {\n                checked = true;\n                indeterminate = false;\n            } else if (this.currentState === TriStateCheckboxState.SOME) {\n                checked = true;\n                indeterminate = true;\n            }\n            this.renderer.setProperty(this.customCheckbox.nativeElement, 'checked', checked);\n\n            // Browser Support for indeterminate: https://caniuse.com/#search=indeterminate\n            this.customCheckbox.nativeElement.indeterminate = indeterminate;\n        }\n    }\n\n    emitValueChanged() {\n        const values = [];\n        for (const value of this.controls.values()) {\n            if (!!value) {\n                values.push(value);\n            }\n        }\n\n        this.onChanged(values);\n        this.onTouched();\n    }\n\n    reset(): void {\n        this.writeAllControlValues(false);\n        this.refreshState();\n        this.emitValueChanged();\n    }\n\n    writeValue(obj: any): void {\n        if (!!obj && obj.hasOwnProperty('length') && obj.length > 0) {\n            console.warn('It\\'s currently not possible to set values. Maybe later there is a solution to do that.');\n        }\n    }\n}\n"]}