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/**
* @copyright Copyright (c) 2018 John Molakvoæ <skjnldsv@protonmail.com>
*
* @author John Molakvoæ <skjnldsv@protonmail.com>
*
* @license GNU AGPL version 3 or any later version
*
* 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, 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 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 <http://www.gnu.org/licenses/>.
*
*/
(function() {
'use strict';
/**
* @class Search
* @memberOf OCA
*
* The Search class manages a search
*
* This is a simple method. Register a new search with your function as references.
* The events will forward the search or reset directly
*
* @param {Function} searchCallback the function to run on a query search
* @param {Function} resetCallback the function to run when the user reset the form
*/
var Search = function(searchCallback, resetCallback) {
this.initialize(searchCallback, resetCallback);
};
/**
* @memberof OC
*/
Search.prototype = {
/**
* Initialize the search box
*
* @param {Function} searchCallback the function to run on a query search
* @param {Function} resetCallback the function to run when the user reset the form
*/
initialize: function(searchCallback, resetCallback) {
var self = this;
if (typeof searchCallback !== 'function') {
throw new Error('searchCallback must be a function');
}
if (typeof resetCallback !== 'function') {
throw new Error('resetCallback must be a function');
}
if (!document.getElementById('searchbox')) {
throw new Error('searchBox not available');
}
this.searchCallback = searchCallback;
this.resetCallback = resetCallback;
console.debug('New search handler registered');
/**
* Search
*/
this._search = function(event) {
event.preventDefault();
var query = document.getElementById('searchbox').value;
self.searchCallback(query);
};
/**
* Reset form
*/
this._reset = function(event) {
event.preventDefault();
document.getElementById('searchbox').value = '';
self.resetCallback();
};
/**
* Submit event handler
*/
this._submitHandler = function(event) {
// Avoid form submit
event.preventDefault();
_.debounce(self.search, 500);
}
/**
* keyUp event handler for the escape key
*/
this._keyUpHandler = function(event) {
if (event.defaultPrevented) {
return;
}
var key = event.key || event.keyCode;
if (
document.getElementById('searchbox') === document.activeElement &&
document.getElementById('searchbox').value === ''
) {
if (key === 'Escape' || key === 'Esc' || key === 27) {
document.activeElement.blur(); // remove focus on searchbox
_.debounce(self.reset, 500);
}
}
}
this._searchDebounced = _.debounce(self._search, 500)
this._resetDebounced = _.debounce(self._reset, 500)
/**
* keyDown event handler for the ctrl+F shortcut
*/
this._keyDownHandler = function(event) {
if (event.defaultPrevented) {
return;
}
var key = event.key || event.keyCode;
if (document.getElementById('searchbox') !== document.activeElement) {
if (
(event.ctrlKey || event.metaKey) && // CTRL or mac CMD
!event.shiftKey && // Not SHIFT
(key === 'f' || key === 70) // F
) {
event.preventDefault();
document.getElementById('searchbox').focus();
document.getElementById('searchbox').select();
}
}
}
// Show search
document.getElementById('searchbox').style.display = 'block';
// Register input event
document
.getElementById('searchbox')
.addEventListener('input', this._searchDebounced, true);
document
.querySelector('form.searchbox')
.addEventListener('submit', this._submitHandler, true);
// Register reset
document
.querySelector('form.searchbox')
.addEventListener('reset', this._resetDebounced, true);
// Register esc key shortcut reset if focused
document.addEventListener('keyup', this._keyUpHandler);
// Register ctrl+F key shortcut to focus
document.addEventListener('keydown', this._keyDownHandler);
},
unregister: function() {
// Hide search
document.getElementById('searchbox').style.display = 'none';
// Reset search
document.getElementById('searchbox').value = '';
this.resetCallback();
// Unregister input event
document
.getElementById('searchbox')
.removeEventListener('input', this._searchDebounced, true);
document
.querySelector('form.searchbox')
.removeEventListener('submit', this._submitHandler, true);
// Unregister reset
document
.querySelector('form.searchbox')
.removeEventListener('reset', this._resetDebounced, true);
// Unregister esc key shortcut reset if focused
document.removeEventListener('keyup', this._keyUpHandler);
// Unregister ctrl+F key shortcut to focus
document.removeEventListener('keydown', this._keyDownHandler);
console.debug('Search handler unregistered');
}
};
OCA.Search = Search;
})();
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