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/*
** Copyright (C) 2001-2025 Zabbix SIA
**
** This program is free software: you can redistribute it and/or modify it under the terms of
** the GNU Affero General Public License as published by the Free Software Foundation, version 3.
**
** 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 Affero General Public License for more details.
**
** You should have received a copy of the GNU Affero General Public License along with this program.
** If not, see <https://www.gnu.org/licenses/>.
**/
const MENU_EXPAND_SELECTED_DELAY = 5000;
const MENU_EVENT_BLUR = 'blur';
const MENU_EVENT_EXPAND = 'expand';
const MENU_EVENT_FOCUS = 'focus';
class CMenu extends CBaseComponent {
constructor(target, level) {
super(target);
this.init(level || 0);
this.registerEvents();
}
init(level) {
this._expanded_item = null;
this._selected_item = null;
this._items = [];
this._level = level;
for (const el of this._target.childNodes) {
const item = new CMenuItem(el, this._level);
if (item.isExpanded()) {
this._expanded_item = item;
}
if (item.isSelected()) {
this._selected_item = item;
}
this._items.push(item);
}
this.hasClass('submenu') && this.updateHeight();
}
getItems() {
return this._items;
}
getLevel() {
return this._level;
}
collapseExpanded(from_level) {
if (this._expanded_item !== null && this._expanded_item.collapseSubmenu(from_level)) {
this._expanded_item = null;
}
return this._level > (from_level || 0);
}
expandSelected(till_level) {
if (this._level < till_level && this._selected_item !== null && this._selected_item !== this._expanded_item) {
this.collapseExpanded();
this._selected_item.hasSubmenu() && this._selected_item.expandSubmenu(till_level);
}
return this;
}
focusSelected(till_level) {
if (this._selected_item !== null) {
if (this._selected_item.hasSubmenu() && this._level < till_level) {
this.expandSelected(till_level);
this._selected_item.getSubmenu().focusSelected(till_level);
}
else {
this._selected_item.focus();
}
}
return this;
}
getExpanded() {
return this._expanded_item;
}
getSelected() {
return this._selected_item;
}
updateHeight() {
this._target.style.maxHeight = `${this._target.scrollHeight}px`;
}
updateRect(relative_item, limit) {
const r_rect = relative_item.getBoundingClientRect();
limit = Object.assign({top: 0, bottom: 0}, limit || {});
this._target.style.top = `${Math.max(limit.top,
Math.min(r_rect.y, window.innerHeight - this._target.scrollHeight - limit.bottom)
)}px`;
this._target.style.left = `${r_rect.x + r_rect.width}px`;
this._target.style.maxWidth = `${this._target.scrollWidth}px`;
this._target.style.maxHeight = `${this._target.scrollHeight}px`;
if (this._expanded_item && this._expanded_item.hasSubmenu()) {
this._expanded_item.getSubmenu().updateRect(this._expanded_item._target, limit);
}
}
/**
* Register all DOM events.
*/
registerEvents() {
this._events = {
focus: (e) => {
if (!this._target.contains(e.relatedTarget)) {
this.fire((e.type === 'focusin') ? MENU_EVENT_FOCUS : MENU_EVENT_BLUR);
}
},
expand: (e) => {
this._expanded_item !== e.detail.target && this.collapseExpanded();
this._expanded_item = e.detail.target;
this.fire(MENU_EVENT_EXPAND, {menu_item: this._expanded_item});
},
collapse: () => {
this._expanded_item = null;
}
};
this.on('focusin focusout', this._events.focus);
for (const item of this._items) {
if (item.hasSubmenu()) {
item.on(MENUITEM_EVENT_EXPAND, this._events.expand);
item.on(MENUITEM_EVENT_COLLAPSE, this._events.collapse);
}
}
}
}
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