egroupware_official/api/js/etemplate/Et2Button/Et2Button.ts

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/**
* EGroupware eTemplate2 - Button widget
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link https://www.egroupware.org
* @author Nathan Gray
*/
import {css, PropertyValues} from "@lion/core";
import {Et2InputWidget} from "../Et2InputWidget/Et2InputWidget";
import '../Et2Image/Et2Image';
import {SlButton} from "@shoelace-style/shoelace";
import shoelace from "../Styles/shoelace";
export class Et2Button extends Et2InputWidget(SlButton)
{
protected clicked : boolean = false;
/**
* images to be used as background-image, if none is explicitly applied and id matches given regular expression
*/
static readonly default_background_images : object = {
save: /save(&|\]|$)/,
apply: /apply(&|\]|$)/,
cancel: /cancel(&|\]|$)/,
delete: /delete(&|\]|$)/,
discard: /discard(&|\]|$)/,
edit: /edit(&|\[\]|$)/,
next: /(next|continue)(&|\]|$)/,
finish: /finish(&|\]|$)/,
back: /(back|previous)(&|\]|$)/,
copy: /copy(&|\]|$)/,
more: /more(&|\]|$)/,
check: /(yes|check)(&|\]|$)/,
cancelled: /no(&|\]|$)/,
ok: /ok(&|\]|$)/,
close: /close(&|\]|$)/,
add: /(add(&|\]|$)|create)/ // customfields use create*
};
/**
* Classnames added automatically to buttons to set certain hover background colors
*/
static readonly default_classes : object = {
et2_button_cancel: /cancel(&|\]|$)/, // yellow
et2_button_question: /(yes|no)(&|\]|$)/, // yellow
et2_button_delete: /delete(&|\]|$)/ // red
};
static get styles()
{
return [
...shoelace,
...super.styles,
css`
:host {
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padding: 0;
/* These should probably come from somewhere else */
max-width: 125px;
min-width: fit-content;
}
:host([hideonreadonly][disabled]) {
display:none;
}
/* Set size for icon */
::slotted(img.imageOnly) {
padding-right: 0px !important;
width: 16px !important;
}
::slotted(et2-image) {
max-width: 20px;
display: flex;
}
::slotted([slot="icon"][src='']) {
display: none;
}
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.imageOnly {
width:18px;
height: 18px;
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}
/* Make hover border match other widgets (select) */
.button--standard.button--default:hover:not(.button--disabled) {
background-color: var(--sl-input-background-color-hover);
border-color: var(--sl-input-border-color-hover);
color: var(--sl-input-color-hover);
}
.button {
justify-content: left;
}
.button--has-label.button--medium .button__label {
padding: 0 var(--sl-spacing-medium);
}
.button__label {
}
.button__prefix {
padding-left: 1px;
}
/* Only image, no label */
.button--has-prefix:not(.button--has-label) {
width: calc(var(--sl-input-height-medium) + var(--sl-input-spacing-small) * 2);
}
`,
];
}
static get properties()
{
return {
...super.properties,
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// LionButton doesn't have a label property & Et2Widget avoids re-defining it
label: {type: String},
image: {type: String},
/**
* If button is set to readonly, do we want to hide it completely (old behaviour) or show it as disabled
* (default)
* Something's not quite right here, as the attribute shows up as "hideonreadonly" instead of "hide" but
* it does not show up without the "attribute", and attribute:"hideonreadonly" does not show as an attribute
*/
hideOnReadonly: {type: Boolean, reflect: true, attribute: "hide"},
/**
* Button should submit the etemplate
* Return false from the click handler to cancel the submit, or set noSubmit to true to skip submitting.
*/
noSubmit: {type: Boolean, reflect: false},
/**
* When submitting, skip the validation step. Allows to submit etemplates directly to the server.
*/
noValidation: {type: Boolean}
}
}
constructor()
{
super();
// Property default values
this.__image = '';
this.noSubmit = false;
this.hideOnReadonly = false;
this.noValidation = false;
// Do not add icon here, no children can be added in constructor
}
connectedCallback()
{
super.connectedCallback();
//this.classList.add("et2_button")
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}
set label(new_label : string)
{
this.updateComplete.then(() =>
{
if(!this._labelNode)
{
const textNode = document.createTextNode(new_label);
this.appendChild(textNode);
}
else
{
this._labelNode.textContent = new_label;
}
});
}
get label()
{
return this._labelNode?.textContent?.trim();
}
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set image(new_image : string)
{
let oldValue = this.__image;
if(new_image.indexOf("http") >= 0 || new_image.indexOf(egw.webserverUrl) >=0)
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{
this.__image = new_image
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}
else
{
this.__image = this.egw().image(new_image);
}
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this.requestUpdate("image", oldValue);
}
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get image ()
{
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return this.__image;
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}
_handleClick(event : MouseEvent) : boolean
{
// ignore click on readonly button
if(this.disabled || this.readonly)
{
event.preventDefault();
event.stopImmediatePropagation();
return false;
}
this.clicked = true;
// Cancel buttons don't trigger the close confirmation prompt
if(this.classList.contains("et2_button_cancel"))
{
this.getInstanceManager()?.skip_close_prompt();
}
if(!super._handleClick(event))
{
this.clicked = false;
return false;
}
// Submit the form
if(!this.noSubmit)
{
return this.getInstanceManager().submit(this, undefined, this.noValidation);
}
this.clicked = false;
this.getInstanceManager()?.skip_close_prompt(false);
return true;
}
/**
* Handle changes that have to happen based on changes to properties
*
*/
requestUpdate(name : PropertyKey, oldValue)
{
super.requestUpdate(name, oldValue);
// "disabled" is the attribute from the spec
if(name == 'readonly')
{
if(this.readonly)
{
this.setAttribute('disabled', "");
}
else
{
this.removeAttribute("disabled");
}
}
// Default image & class are determined based on ID
if(name == "id" && this._widget_id)
{
// Check against current value to avoid triggering another update
if(!this.image)
{
let image = this._get_default_image(this._widget_id);
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if(image && image != this._image)
{
this.image = image;
}
}
let default_class = this._get_default_class(this._widget_id);
if(default_class && !this.classList.contains(default_class))
{
this.classList.add(default_class);
}
}
}
updated(changedProperties : PropertyValues)
{
super.updated(changedProperties);
if(changedProperties.has("image"))
{
if(this.image && !this._iconNode)
{
const image = document.createElement("et2-image");
image.slot = "prefix";
this.prepend(image);
}
this._iconNode.src = this.__image;
}
}
/**
* Get a default image for the button based on ID
*
* @param {string} check_id
*/
_get_default_image(check_id : string) : string
{
if(!check_id)
{
return "";
}
if(!this.image)
{
for(const image in Et2Button.default_background_images)
{
if(check_id.match(Et2Button.default_background_images[image]))
{
return image;
}
}
}
return "";
}
/**
* Get a default class for the button based on ID
*
* @param check_id
* @returns {string}
*/
_get_default_class(check_id)
{
if(!check_id)
{
return "";
}
for(var name in Et2Button.default_classes)
{
if(check_id.match(Et2Button.default_classes[name]))
{
return name;
}
}
return "";
}
get _iconNode() : HTMLImageElement
{
return <HTMLImageElement>(Array.from(this.children)).find(
el => (<HTMLElement>el).slot === "prefix",
);
}
get _labelNode() : HTMLElement
{
return <HTMLImageElement>(Array.from(this.childNodes)).find(
el => (<HTMLElement>el).nodeType === 3,
);
}
/**
* Implementation of the et2_IInput interface
*/
/**
* Always return false as a button is never dirty
*/
isDirty()
{
return false;
}
resetDirty()
{
}
getValue()
{
if(this.clicked)
{
return true;
}
// If "null" is returned, the result is not added to the submitted
// array.
return null;
}
}
// @ts-ignore TypeScript is not recognizing that Et2Button is a LitElement
customElements.define("et2-button", Et2Button);