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/**
* This file is part of Haketilo.
*
* Function: Showing and error/info/confirmation dialog.
*
* Copyright (C) 2022 Wojtek Kosior
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* As additional permission under GNU GPL version 3 section 7, you
* may distribute forms of that code without the copy of the GNU
* GPL normally required by section 4, provided you include this
* license notice and, in case of non-source distribution, a URL
* through which recipients can access the Corresponding Source.
* If you modify file(s) with this exception, you may extend this
* exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* As a special exception to the GPL, any HTML file which merely
* makes function calls to this code, and for that purpose
* includes it by reference shall be deemed a separate work for
* copyright law purposes. If you modify this code, you may extend
* this exception to your version of the code, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* I, Wojtek Kosior, thereby promise not to sue for violation of this file's
* license. Although I request that you do not make use of this code in a
* proprietary program, I am not going to enforce this in court.
*/
#FROM html/DOM_helpers.js IMPORT clone_template
function make(on_dialog_show, on_dialog_hide)
{
const dialog_context = clone_template("dialog");
Object.assign(dialog_context, {
on_dialog_show,
on_dialog_hide,
shown: false,
queue: [],
});
for (const [id, val] of [["yes", true], ["no", false], ["ok", undefined]]) {
const but = dialog_context[`${id}_but`];
but.haketilo_dialog_result = val;
but.addEventListener("click", e => close_dialog(dialog_context, e));
}
return dialog_context;
}
#EXPORT make
function close_dialog(dialog_context, event)
{
if ((event && event.target.parentElement.classList.contains("hide")) ||
dialog_context.queue.length === 0)
return;
const [[shown_buts_id, msg, resolve]] = dialog_context.queue.splice(0, 1);
if (dialog_context.queue.length > 0) {
process_queue_item(dialog_context);
} else {
dialog_context.shown = false;
try {
dialog_context.on_dialog_hide();
} catch(e) {
console.error(e);
}
}
resolve(event ? event.target.haketilo_dialog_result : undefined);
}
#EXPORT close_dialog AS close
function process_queue_item(dialog_context)
{
const [shown_buts_id, msg, resolve] = dialog_context.queue[0];
[...dialog_context.msg.childNodes].forEach(n => n.remove());
dialog_context.msg.append(...msg);
for (const buts_id of ["ask_buts", "conf_buts"]) {
const action = buts_id === shown_buts_id ? "remove" : "add";
dialog_context[buts_id].classList[action]("hide");
}
}
async function show_dialog(dialog_context, shown_buts_id, msg)
{
let resolve;
const result_prom = new Promise(cb => resolve = cb);
dialog_context.queue.push([shown_buts_id, msg, resolve]);
if (!dialog_context.shown) {
process_queue_item(dialog_context);
dialog_context.shown = true;
try {
dialog_context.on_dialog_show();
} catch(e) {
console.error(e);
}
}
return await result_prom;
}
const error = (ctx, ...msg) => show_dialog(ctx, "conf_buts", msg);
#EXPORT error
/* info() and error() are the same for now, we might later change that. */
const info = error;
#EXPORT info
const ask = (ctx, ...msg) => show_dialog(ctx, "ask_buts", msg);
#EXPORT ask
const loader = (ctx, ...msg) => show_dialog(ctx, null, msg);
#EXPORT loader
/*
* Wrapper around target.addEventListener() that makes the requested callback
* only execute if dialog is not shown.
*/
function onevent(ctx, target, event, cb)
{
target.addEventListener(event, e => !ctx.shown && cb(e));
}
#EXPORT onevent
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