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/**
* This file is part of Haketilo.
*
* Function: Showing a list of resources/mappings in a browser.
*
* 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.
*/
#IMPORT common/indexeddb.js AS haketilodb
#IMPORT html/dialog.js
#FROM html/item_preview.js IMPORT resource_preview, mapping_preview
#FROM html/DOM_helpers.js IMPORT clone_template
function preview_item(list_ctx, item, ignore_dialog=false)
{
if (list_ctx.dialog_ctx.shown && !ignore_dialog)
return;
list_ctx.preview_ctx = list_ctx.preview_cb(
item.definition,
list_ctx.preview_ctx,
list_ctx.dialog_ctx
);
list_ctx.preview_container.prepend(list_ctx.preview_ctx.main_div);
if (list_ctx.previewed_item !== null)
list_ctx.previewed_item.li.classList.remove("item_li_highlight");
list_ctx.previewed_item = item;
item.li.classList.add("item_li_highlight");
list_ctx.preview_container.classList.remove("hide");
}
function insert_item(list_ctx, definition, idx)
{
const li = document.createElement("li");
li.innerText = definition.long_name;
if (idx)
list_ctx.items[idx - 1].li.after(li);
else
list_ctx.ul.prepend(li);
const item = {definition, li};
list_ctx.items.splice(idx, 0, item);
list_ctx.by_identifier.set(definition.identifier, item);
li.addEventListener("click", () => preview_item(list_ctx, item));
return item;
}
const coll = new Intl.Collator();
function item_cmp(def1, def2)
{
return coll.compare(def1.long_name, def2.long_name) ||
coll.compare(def1.identifier, def2.identifier);
}
function find_item_idx(list_ctx, definition)
{
/* Perform a binary search of item's (new or not) index in sorted array. */
let left = 0, right = list_ctx.items.length;
while (left < right) {
const mid = (left + right) >> 1;
if (item_cmp(definition, list_ctx.items[mid].definition) > 0)
left = mid + 1;
else /* <= 0 */
right = mid;
}
return left;
}
function item_changed(list_ctx, change)
{
/* Remove item. */
const old_item = list_ctx.by_identifier.get(change.key);
if (old_item !== undefined) {
list_ctx.items.splice(find_item_idx(list_ctx, old_item.definition), 1);
list_ctx.by_identifier.delete(change.key);
old_item.li.remove();
if (list_ctx.previewed_item === old_item) {
list_ctx.preview_container.classList.add("hide");
list_ctx.previewed_item = null;
}
}
if (change.new_val === undefined)
return;
const new_item = insert_item(list_ctx, change.new_val,
find_item_idx(list_ctx, change.new_val));
if (list_ctx.previewed_item === old_item)
preview_item(list_ctx, new_item, true);
}
async function remove_clicked(list_ctx)
{
if (list_ctx.dialog_ctx.shown || list_ctx.previewed_item === null)
return;
const identifier = list_ctx.previewed_item.definition.identifier;
if (!(await dialog.ask(list_ctx.dialog_ctx,
`Are you sure you want to delete '${identifier}'?`)))
return;
try {
await list_ctx.remove_cb(identifier);
} catch(e) {
console.error(e);
dialog.error(list_ctx.dialog_ctx, `Couldn't remove '${identifier}' :(`)
}
}
async function item_list(preview_cb, track_cb, remove_cb)
{
const list_ctx = clone_template("item_list");
const [tracking, definitions] =
await track_cb(ch => item_changed(list_ctx, ch));
definitions.sort(item_cmp);
Object.assign(list_ctx, {
items: [],
by_identifier: new Map(),
tracking,
previewed_item: null,
preview_cb,
remove_cb,
dialog_ctx: dialog.make(() => on_dialog_show(list_ctx),
() => on_dialog_hide(list_ctx))
});
list_ctx.dialog_container.append(list_ctx.dialog_ctx.main_div);
for (const def of definitions)
insert_item(list_ctx, def, list_ctx.items.length);
list_ctx.remove_but
.addEventListener("click", () => remove_clicked(list_ctx));
return list_ctx;
}
function on_dialog_show(list_ctx)
{
list_ctx.ul.classList.add("list_disabled");
list_ctx.preview_container.classList.add("hide");
list_ctx.dialog_container.classList.remove("hide");
}
function on_dialog_hide(list_ctx)
{
list_ctx.ul.classList.remove("list_disabled");
if (list_ctx.previewed_item !== null)
list_ctx.preview_container.classList.remove("hide");
list_ctx.dialog_container.classList.add("hide");
}
async function remove_single_item(item_type, identifier)
{
const transaction_ctx =
await haketilodb.start_items_transaction([item_type], {});
await haketilodb[`remove_${item_type}`](identifier, transaction_ctx);
await haketilodb.finalize_transaction(transaction_ctx);
}
function resource_list()
{
return item_list(resource_preview, haketilodb.track.resource,
id => remove_single_item("resource", id));
}
#EXPORT resource_list
function mapping_list()
{
return item_list(mapping_preview, haketilodb.track.mapping,
id => remove_single_item("mapping", id));
}
#EXPORT mapping_list
function destroy_list(list_ctx)
{
haketilodb.untrack(list_ctx.tracking);
list_ctx.main_div.remove();
}
#EXPORT destroy_list
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