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477 lines
11 KiB
TypeScript
477 lines
11 KiB
TypeScript
import {et2_IInput, et2_IInputNode, et2_ISubmitListener} from "../et2_core_interfaces";
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import {Et2Widget} from "../Et2Widget/Et2Widget";
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import {css, dedupeMixin, LitElement, PropertyValues} from "@lion/core";
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import {Required} from "../Validators/Required";
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import {ManualMessage} from "../Validators/ManualMessage";
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import {LionValidationFeedback, Validator} from "@lion/form-core";
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/**
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* This mixin will allow any LitElement to become an Et2InputWidget
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*
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* Usage:
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* export class Et2Button extends Et2InputWidget(LitWidget)) {...}
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*/
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/**
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* Need to define the interface first, to get around TypeScript issues with protected/public
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* This must match the public API for Et2InputWidgetClass
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* @see https://lit.dev/docs/composition/mixins/#typing-the-subclass
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*/
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export declare class Et2InputWidgetInterface
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{
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readonly : boolean;
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protected value : string | number | Object;
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public set_value(any) : void;
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public get_value() : any;
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public getValue() : any;
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public set_readonly(boolean) : void;
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public set_validation_error(message : string | false) : void;
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public isDirty() : boolean;
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public resetDirty() : void;
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public isValid(messages : string[]) : boolean;
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}
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type Constructor<T = {}> = new (...args : any[]) => T;
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const Et2InputWidgetMixin = <T extends Constructor<LitElement>>(superclass : T) =>
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{
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class Et2InputWidgetClass extends Et2Widget(superclass) implements et2_IInput, et2_IInputNode, et2_ISubmitListener
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{
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private __readonly : boolean;
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protected _oldValue : string | number | Object;
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protected node : HTMLElement;
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// Validators assigned to one specific instance of a widget
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protected validators : Validator[];
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// Validators for every instance of a type of widget
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protected defaultValidators : Validator[];
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/** WebComponent **/
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static get styles()
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{
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return [
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...super.styles,
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css`
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/* Needed so required can show through */
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::slotted(input), input {
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background-color: transparent;
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}
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/* Used to allow auto-sizing on slotted inputs */
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.input-group__container > .input-group__input ::slotted(.form-control) {
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width: 100%;
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}
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`
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];
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}
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static get properties()
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{
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return {
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...super.properties,
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// readOnly is what the property is in Lion, readonly is the attribute
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readOnly: {
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type: Boolean,
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attribute: 'readonly',
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},
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// readonly is what is in the templates
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// I put this in here so loadWebComponent finds it when it tries to set it from the template
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readonly: {
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type: Boolean,
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reflect: true
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},
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required: {
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type: Boolean,
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reflect: true
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},
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onchange: {
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type: Function
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},
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};
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}
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/**
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* List of properties that get translated
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* Done separately to not interfere with properties - if we re-define label property,
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* labels go missing.
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* @returns object
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*/
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static get translate()
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{
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return {
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...super.translate,
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placeholder: true,
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}
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}
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/**
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* Compatibility for deprecated name "needed"
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*
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* @deprecated use required instead
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* @param val
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*/
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set needed(val : boolean)
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{
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this.required = val;
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}
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/**
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* Compatibility for deprecated name "needed"
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*
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* @deprecated use required instead
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*/
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get needed()
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{
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return this.required;
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}
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constructor(...args : any[])
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{
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super(...args);
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this.validators = [];
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this.defaultValidators = [];
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}
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connectedCallback()
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{
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super.connectedCallback();
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this._oldChange = this._oldChange.bind(this);
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this.node = this.getInputNode();
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this.updateComplete.then(() =>
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{
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this.addEventListener("change", this._oldChange);
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});
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}
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disconnectedCallback()
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{
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super.disconnectedCallback();
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this.removeEventListener("change", this._oldChange);
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}
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/**
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* A property has changed, and we want to make adjustments to other things
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* based on that
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*
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* @param {import('@lion/core').PropertyValues } changedProperties
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*/
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updated(changedProperties : PropertyValues)
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{
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super.updated(changedProperties);
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// required changed, add / remove validator
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if(changedProperties.has('required'))
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{
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// Remove class
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this.classList.remove("et2_required")
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// Remove all existing Required validators (avoids duplicates)
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this.validators = (this.validators || []).filter((validator) => validator instanceof Required)
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if(this.required)
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{
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this.validators.push(new Required());
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this.classList.add("et2_required");
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}
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}
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}
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/**
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* Change handler calling custom handler set via onchange attribute
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*
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* @param _ev
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* @returns
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*/
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_oldChange(_ev : Event) : boolean
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{
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if(typeof this.onchange == 'function')
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{
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// Make sure function gets a reference to the widget, splice it in as 2. argument if not
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let args = Array.prototype.slice.call(arguments);
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if(args.indexOf(this) == -1)
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{
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args.splice(1, 0, this);
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}
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return this.onchange(...args);
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}
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return true;
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}
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set_value(new_value)
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{
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this.value = new_value;
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if(typeof this._callParser == "function")
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{
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this.modelValue = this._callParser(new_value);
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}
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}
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get_value()
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{
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return this.getValue();
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}
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set_readonly(new_value)
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{
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this.readonly = new_value;
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}
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// Deal with Lion readOnly vs etemplate readonly
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public set readonly(new_value)
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{
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this.__readonly = super.__readOnly = new_value;
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this.requestUpdate("readonly");
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}
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public get readonly() { return this.__readonly};
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set readOnly(new_value) {this.readonly = new_value;}
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get readOnly() { return this.readonly};
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getValue()
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{
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return this.readOnly || this.disabled ? null : this.value;
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}
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isDirty()
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{
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// Readonly can't be dirty, it can't change
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if(this.readOnly)
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{
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return false;
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}
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let value = this.getValue();
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if(typeof value !== typeof this._oldValue)
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{
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return true;
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}
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if(this._oldValue === value)
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{
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return false;
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}
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switch(typeof this._oldValue)
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{
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case "object":
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if(Array.isArray(this._oldValue) &&
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this._oldValue.length !== value.length
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)
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{
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return true;
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}
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for(let key in this._oldValue)
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{
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if(this._oldValue[key] !== value[key])
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{
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return true;
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}
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}
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return false;
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default:
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return this._oldValue != value;
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}
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}
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resetDirty()
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{
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this._oldValue = this.getValue();
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}
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/**
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* Used by etemplate2 to determine if we can submit or not
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*
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* @param messages
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* @returns {boolean}
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*/
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isValid(messages)
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{
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var ok = true;
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debugger;
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// Check for required
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if(this.required && !this.readonly && !this.disabled &&
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(this.getValue() == null || this.getValue().valueOf() == ''))
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{
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messages.push(this.egw().lang('Field must not be empty !!!'));
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ok = false;
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}
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return ok;
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}
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getInputNode()
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{
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// From LionInput
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return this._inputNode;
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}
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transformAttributes(attrs)
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{
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super.transformAttributes(attrs);
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// Check whether an validation error entry exists
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if(this.id && this.getArrayMgr("validation_errors"))
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{
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let val = this.getArrayMgr("validation_errors").getEntry(this.id);
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if(val)
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{
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this.set_validation_error(val);
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}
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}
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}
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/**
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* Massively simplified validate, as compared to what ValidatorMixin gives us, since ValidatorMixin extends
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* FormControlMixin which breaks SlSelect's render()
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*/
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async validate()
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{
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let validators = [...(this.validators || []), ...(this.defaultValidators || [])];
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let fieldName = this.id;
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let feedbackData = [];
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let resultPromises = [];
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this.querySelector("lion-validation-feedback")?.remove();
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const doValidate = async function(validator, value)
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{
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if(validator.config.fieldName)
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{
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fieldName = await validator.config.fieldName;
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}
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// @ts-ignore [allow-protected]
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return validator._getMessage({
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modelValue: value,
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formControl: this,
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fieldName,
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}).then((message) =>
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{
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feedbackData.push({message, type: validator.type, validator});
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});
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}.bind(this);
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const doCheck = async(value, validator) =>
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{
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const result = validator.execute(value, validator.param, {node: this});
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if(result === true)
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{
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resultPromises.push(doValidate(validator, value));
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}
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else if(result !== false && typeof result.then === 'function')
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{
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result.then(doValidate(validator, value));
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resultPromises.push(result);
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}
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};
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validators.map(async validator =>
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{
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let values = this.value;
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if(!Array.isArray(values))
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{
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values = [values];
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}
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if(!values.length)
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{
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values = [''];
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} // so required validation works
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// Run manual validation messages just once, doesn't usually matter what the value is
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if(validator instanceof ManualMessage)
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{
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doCheck(values, validator);
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}
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else
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{
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// Validate each individual item
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values.forEach((value) => doCheck(value, validator));
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}
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});
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await Promise.all(resultPromises);
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if(feedbackData.length > 0)
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{
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let feedback = <LionValidationFeedback>document.createElement("lion-validation-feedback");
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feedback.feedbackData = feedbackData;
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feedback.slot = "help-text";
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if(this.shadowRoot.querySelector("slot[name='feedback']"))
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{
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feedback.slot = "feedback";
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}
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else
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{
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this.append(feedback);
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// Not always visible?
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(<HTMLElement>this.shadowRoot.querySelector("#help-text")).style.display = "initial";
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}
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}
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}
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set_validation_error(err : string | false)
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{
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/* Shoelace uses constraint validation API
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https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#the-constraint-validation-api
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if(err === false && this.setCustomValidity)
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{
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// Remove custom validity
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this.setCustomValidity('');
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return;
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}
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this.setCustomValidity(err);
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// must call reportValidity() or nothing will happen
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this.reportValidity();
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*/
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if(err === false)
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{
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// Remove all Manual validators
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this.validators = (this.validators || []).filter((validator) => !(validator instanceof ManualMessage))
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return;
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}
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// Need to change interaction state so messages show up
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// submitted is a little heavy-handed, especially on first load, but it works
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this.submitted = true;
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// Add validator
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this.validators.push(new ManualMessage(err));
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// Force a validate - not needed normally, but if you call set_validation_error() manually,
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// it won't show up without validate()
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this.validate();
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}
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/**
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* Called whenever the template gets submitted. We return false if the widget
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* is not valid, which cancels the submission.
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*
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* @param _values contains the values which will be sent to the server.
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* Listeners may change these values before they get submitted.
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*/
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async submit(_values) : Promise<boolean>
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{
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this.submitted = true;
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// If using Lion validators, run them now
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if(this.validate)
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{
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// Force update now
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this.validate(true);
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await this.validateComplete;
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return (this.hasFeedbackFor || []).indexOf("error") == -1;
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}
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return true;
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}
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}
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return Et2InputWidgetClass;
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}
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export const Et2InputWidget = dedupeMixin(Et2InputWidgetMixin); |