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| /*
* @license
* Copyright Hôpitaux Universitaires de Genève. All Rights Reserved.
*
* Use of this source code is governed by an Apache-2.0 license that can be
* found in the LICENSE file at https://github.com/DSI-HUG/dejajs-components/blob/master/LICENSE
*/
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { Directive, ElementRef, HostBinding, Input, OnDestroy, OnInit, Optional, Self } from '@angular/core';
import { ControlValueAccessor, NgControl } from '@angular/forms';
import { BehaviorSubject, from as observableFrom, fromEvent as observableFromEvent, timer as observableTimer } from 'rxjs';
import { filter, first, map, takeUntil, takeWhile, tap } from 'rxjs/operators';
import { KeyCodes } from '../../common/core/keycodes.enum';
const noop = () => { };
@Directive({
selector: '[deja-editable]',
})
export class DejaEditableDirective implements ControlValueAccessor, OnDestroy, OnInit {
public onTouchedCallback: () => void = noop;
public onChangeCallback: (_: any) => void = noop;
private model: string;
private _inEdition = false;
private _editMode = false;
private _mandatory = false;
private _multiline = false;
private edit$ = new BehaviorSubject<[boolean, boolean]>([false, false]);
private element: HTMLElement;
private isAlive = true;
@HostBinding('attr.disabled') private _disabled: boolean = null;
constructor(elementRef: ElementRef, @Self() @Optional() public _control: NgControl) {
Eif (this._control) {
this._control.valueAccessor = this;
}
this.element = elementRef.nativeElement as HTMLElement;
observableFromEvent(this.element, 'mousedown').pipe(
takeWhile(() => this.isAlive))
.subscribe((e: MouseEvent) => {
if (this.inEdition || this.disabled) {
e.cancelBubble = true;
return false;
} else if (this.editMode) {
this.edit$.next([true, true]);
e.cancelBubble = true;
return false;
}
});
const inEdition$ = observableFrom(this.edit$).pipe(
filter(([value]) => value !== this._inEdition),
map(([value, selectOnFocus]) => {
if (selectOnFocus !== false) {
observableTimer(10).pipe(
first())
.subscribe(() => {
this.selectAll();
this.focus();
});
}
return value;
}),
tap((value) => {
this._inEdition = value;
if (value) {
this.element.setAttribute('contenteditable', 'true');
} else {
this.element.removeAttribute('contenteditable');
}
this.refreshView();
}));
const kill$ = inEdition$.pipe(
filter((value) => !value));
inEdition$.pipe(
filter((value) => value))
.subscribe(() => {
observableFromEvent(this.element.ownerDocument, 'mousedown').pipe(
first(),
takeUntil(kill$),
filter((event: MouseEvent) => !this.isChildElement(event.target as HTMLElement)))
.subscribe(() => {
const text = this.element.innerText.replace(/\n/g, '<br />').replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi, '');
this.onTouchedCallback();
Eif (text || !this.mandatory) {
this.value = text;
}
this.inEdition = false;
});
observableFromEvent(this.element, 'keydown').pipe(
first(),
takeUntil(kill$))
.subscribe((e: KeyboardEvent) => {
e.cancelBubble = true;
e.stopPropagation();
if (e.keyCode === KeyCodes.Enter && !this.multiline) {
const text = this.element.innerText;
if (text || !this.mandatory) {
this.value = text;
}
this.inEdition = false;
return false;
} else if (e.keyCode === KeyCodes.Escape) {
this.inEdition = false;
return false;
}
return false;
});
});
}
/** Définit une valeur indiquant si le contenu édité est obligatoire. Si la valeur est 'true' la sortie du mode édition ne sera pas possible tant qu'un contenu n'est pas ajouté. */
@Input()
public set mandatory(value: boolean | string) {
this._mandatory = coerceBooleanProperty(value);
}
/** Retourne une valeur indiquant si le contenu édité est obligatoire. Si la valeur est 'true' la sortie du mode édition ne sera pas possible tant qu'un contenu n'est pas ajouté. */
public get mandatory() {
return this._mandatory;
}
/** Définit une valeur indiquant si le contenu édité est multiligne */
@Input()
public set multiline(value: boolean | string) {
this._multiline = coerceBooleanProperty(value);
}
/** Retourne une valeur indiquant si le contenu édité est multiligne */
public get multiline() {
return this._multiline;
}
/** Permet de désactiver le controle */
@Input()
public set disabled(value: boolean | string) {
const disabled = coerceBooleanProperty(value);
this._disabled = disabled || null;
if (this.disabled) {
this.edit$.next([false, false]);
}
}
public get disabled() {
return (this._control && this._control.disabled) || this._disabled;
}
/** Définit une valeur indiquant si l'édition est activée. */
@Input('deja-editable')
public set editMode(value: boolean | string) {
this._editMode = coerceBooleanProperty(value);
}
/** Retourne une valeur indiquant si l'édition est activée. */
public get editMode() {
return this._editMode;
}
/** Définit une valeur indiquant si l'élément est en édition. */
@Input()
public set inEdition(value: boolean | string) {
if (this.disabled) {
return;
}
this.edit$.next([coerceBooleanProperty(value), false]);
}
/** Retourne une valeur indiquant si l'élément est en édition. */
public get inEdition() {
return this._inEdition;
}
// ************* ControlValueAccessor Implementation **************
// set accessor including call the onchange callback
public set value(model: any) {
if (model !== this.model) {
this.writeValue(model);
this.onChangeCallback(model);
}
}
// get accessor
public get value(): any {
return this.model;
}
// From ControlValueAccessor interface
public writeValue(value: any) {
this.model = value;
this.refreshView();
}
// From ControlValueAccessor interface
public registerOnChange(fn: any) {
this.onChangeCallback = fn;
}
// From ControlValueAccessor interface
public registerOnTouched(fn: any) {
this.onTouchedCallback = fn;
}
public setDisabledState(isDisabled: boolean) {
this.disabled = isDisabled;
}
// ************* End of ControlValueAccessor Implementation **************
public ngOnInit() {
this.model = this.element.innerHTML;
}
public ngOnDestroy() {
this.isAlive = false;
}
/** Donne le focus à la zone d'édition. */
public focus() {
this.element.focus();
}
/** Place toute la zone d'édition en selectioné. */
public selectAll() {
const range = document.createRange();
range.selectNodeContents(this.element);
const sel = window.getSelection();
sel.removeAllRanges();
sel.addRange(range);
}
/** Active la zone d'édition. */
public edit(selectOnFocus?: boolean) {
this.edit$.next([!this.disabled, selectOnFocus]);
}
private isChildElement(element: HTMLElement) {
let parentElement = element;
while (parentElement && parentElement !== this.element) {
parentElement = parentElement.parentElement;
}
return parentElement === this.element;
}
private refreshView() {
if (!this.model) {
return;
}
if (this.inEdition) {
this.element.innerText = this.model.replace(/<br\s*[\/]?>/gi, '\n');
} else {
this.element.innerHTML = this.model.replace(/\n/g, '<br />');
}
}
}
|