egroupware_official/api/js/etemplate/Et2Link/Et2LinkString.ts

389 lines
9.3 KiB
TypeScript

/**
* EGroupware eTemplate2 - JS Link list object
*
* @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
* @copyright 2022 Nathan Gray
*/
import {css, html, LitElement, nothing, PropertyValues, render, TemplateResult} from "lit";
import {until} from "lit/directives/until.js";
import {Et2Widget} from "../Et2Widget/Et2Widget";
import {LinkInfo} from "./Et2Link";
import {et2_IDetachedDOM} from "../et2_core_interfaces";
import {property} from "lit/decorators/property.js";
import {customElement} from "lit/decorators/custom-element.js";
import {repeat} from "lit/directives/repeat.js";
/**
* Display a list of entries in a comma separated list
*
* Given an application & entry ID, will query the list of links and display
*
* @see Et2Link
*/
// @ts-ignore TypeScript says there's something wrong with types
@customElement('et2-link-string')
export class Et2LinkString extends Et2Widget(LitElement) implements et2_IDetachedDOM
{
static get styles()
{
return [
...super.styles,
css`
:host {
list-style-type: none;
display: inline;
padding: 0px;
}
et2-link, et2-link::part(base), et2-description {
display: inline;
}
et2-link::part(icon) {
display: none;
}
et2-link:hover {
text-decoration: underline;
}
/* CSS for child elements */
et2-link::part(title):after {
content: ", "
}
et2-link:last-child::part(title):after {
content: initial;
}
`
];
}
/**
* Specify the application for all the entries, so you only need to specify the entry ID
*/
@property({ type: String, reflect: true })
application;
/**
* Application entry ID
*/
@property({type: String, reflect: true})
entryId;
/**
* Application filter
* Set to an appname or comma separated list of applications to show only linked entries from those
* applications
*/
@property({type: String})
onlyApp;
/**
* Type filter
* Sub-type key to list only entries of that type
*/
@property({type: String})
linkType;
/**
* Show links that are marked as deleted, being held for purge
*/
@property({type: Boolean})
showDeleted = false;
/**
* Pass value as an object, will be parsed to set application & entryId
*/
@property({type: Object})
value;
/**
* Number of application-links to load (file-links are always fully loaded currently)
*
* If number is exceeded, a "Load more links ..." button is displayed, which will load the double amount of links each time clicked
*/
@property({type: Number})
limit = 20;
protected _totalResults : number = 0;
protected _link_list : LinkInfo[] = [];
protected _loadingPromise : Promise<LinkInfo[]> = Promise.resolve([]);
protected _loading = false;
constructor()
{
super();
}
async getUpdateComplete()
{
const result = await super.getUpdateComplete();
if(this._loadingPromise)
{
// Wait for the values to arrive before we say we're done
await this._loadingPromise;
}
return result;
}
/**
* Set the value of the list
*
* Value can be:
* - String: CSV list of entries in either app:ID or just ID if application is set.
* - Object: {to_app: <appname>, to_id: <Entry ID>} List of linked entries will be fetched from the server
* - Array: {app: <appname>, id: <ID>}[]
* @param _value
*/
public set_value(_value : string | { to_app : string, to_id : string } | LinkInfo[])
{
this._link_list = [];
if(typeof _value["total"] !== "undefined")
{
this._totalResults = _value["total"];
delete _value["total"];
}
if(typeof _value == "object" && !Array.isArray(_value) && !_value.to_app && this.application)
{
_value.to_app = this.application;
}
// We have app & ID - fetch list
if(typeof _value == 'object' && !Array.isArray(_value) && _value.to_app && _value.to_id && (
typeof _value.to_id === "string" || typeof _value.to_id == "number"))
{
this.application = _value.to_app;
this.entryId = _value.to_id;
// Let update complete finish first, if it's not done yet
this.updateComplete.then(() =>
{
this.get_links();
})
return;
}
// CSV list of IDs for one app
if(typeof _value === "string")
{
let ids = _value.split(",");
ids.forEach((id) => (<LinkInfo[]>this._link_list).push(<LinkInfo>{app: this.application, id: id}));
}
// List of LinkInfo
else if(Array.isArray(_value) || typeof _value[0] == "object")
{
this._link_list = <LinkInfo[]>Object.values(_value);
}
// List of LinkInfo stuffed into to_id - entry is not yet saved
else if(_value.to_id && typeof _value.to_id !== "string")
{
this.entryId = _value.to_id;
Object.keys(_value.to_id).forEach((key) =>
{
this._link_list.push(<LinkInfo>_value.to_id[key]);
});
}
this.requestUpdate();
}
public updated(changedProperties : PropertyValues)
{
super.updated(changedProperties);
if((changedProperties.has("application") || changedProperties.has("entryId") || changedProperties.has("onlyApp") || changedProperties.has("linkType")) &&
this.application && this.entryId
)
{
// Something changed, and we have the information needed to get the matching links
this.get_links();
}
}
public render() : TemplateResult
{
// This shows loading template until loadingPromise resolves, then shows _listTemplate
return html`
${until(this._loadingPromise?.then(res =>
{
return this._listTemplate();
}),
this._loadingTemplate()
)}
${until(this.moreResultsTemplate(), nothing)}
`;
}
protected _listTemplate()
{
return html`
${repeat(this._link_list, l => l.link_id, this._linkTemplate)}
`;
}
/**
* Render one link
*
* @param link
* @returns {TemplateResult}
* @protected
*/
protected _linkTemplate(link : LinkInfo) : TemplateResult
{
const id = typeof link.id === "string" ? link.id : link.link_id;
return html`
<et2-link part="link" class="et2_link"
app="${link.app}" entryId="${id}" .value=${link} ._parent=${this}
></et2-link>`;
}
/**
* Render that we're waiting for data
* @returns {TemplateResult}
* @protected
*/
protected _loadingTemplate() : TemplateResult
{
return html`
<div class="search__loading">
<sl-spinner></sl-spinner>
</div>
`;
}
protected async moreResultsTemplate()
{
if(this._totalResults <= 0 || !this._loadingPromise)
{
return nothing;
}
return this._loadingPromise.then(() =>
{
const moreCount = this._totalResults - this._link_list.length;
const more = html`
<et2-description statustext="${this.egw().lang("%1 more...", moreCount)}">...
</et2-description>`;
return html`${moreCount > 0 ? more : nothing}`;
});
}
/**
* Render a list of links inside the list
* These get slotted, rather than put inside the shadow dom
*
* @param links
* @protected
*/
protected _addLinks(links : LinkInfo[])
{
return;
// Remove anything there right now
while(this.lastChild)
{
this.removeChild(this.lastChild);
}
links.forEach((link) =>
{
let temp = document.createElement("div");
render(this._linkTemplate(link), temp);
temp.childNodes.forEach((node) => this.appendChild(node));
})
/*
This should work, and it does, but only once.
It fails if you try and update then run it again - none of the children get added
Something about how lit renders
render(html`${repeat(links,
(link) => link.app + ":" + link.id,
(link) => this._linkTemplate(link))}`,
<HTMLElement><unknown>this
);
*/
this.dispatchEvent(new Event("change", {bubbles: true}));
}
/**
* Starts the request for link list to the server
*
* Called internally to fetch the list. May be called externally to trigger a refresh if a link is added.
*
*/
public get_links(not_saved_links? : LinkInfo[], offset = 0)
{
if(this._loading)
{
// Already waiting
return;
}
this._loading = true;
if(typeof not_saved_links === "undefined")
{
not_saved_links = [];
}
let _value = {
to_app: this.application,
to_id: this.entryId,
only_app: this.onlyApp,
show_deleted: this.showDeleted,
limit: [offset, /* num_rows: */this.limit]
};
this._loadingPromise = <Promise<LinkInfo[]>>(this.egw().jsonq('EGroupware\\Api\\Etemplate\\Widget\\Link::ajax_link_list', [_value]))
.then(_value =>
{
if(typeof _value.total)
{
this._totalResults = _value.total;
delete _value.total;
}
if(_value)
{
for(let link of <LinkInfo[]>Object.values(_value))
{
// Avoid duplicates, files are always sent
if(!not_saved_links.some(l => l.app == link.app && l.id == link.id) &&
!this._link_list.some(l => l.app == link.app && l.id == link.id))
{
this._link_list.push(link);
}
}
}
this._loading = false;
this.requestUpdate();
})
}
getDetachedAttributes(_attrs : string[])
{
_attrs.push("application", "entryId", "statustext");
}
getDetachedNodes() : HTMLElement[]
{
return [<HTMLElement><unknown>this];
}
setDetachedAttributes(_nodes : HTMLElement[], _values : object, _data?)
{
for(let k in _values)
{
this[k] = _values[k];
this.requestUpdate(k);
}
}
}