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/*
** Zabbix
** Copyright (C) 2001-2018 Zabbix SIA
**
** 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 2 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.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/**
* JQuery class that creates input[type=range] UI element from given input[type=text] elements and adds some
* interactivity for better user experience.
*/
jQuery(function ($) {
"use strict";
function generateRangeElements(datalist, options) {
var value;
for (value = options.min; value < options.max; value += options.step) {
$('<option/>').attr('value', value).appendTo(datalist);
}
}
var methods = {
/**
* Initializes range control for passed input[type=text] elements.
*
* Following options should/must be defined in [data-options] attribute (json expected):
* - step - specifies what is a step in specified min-max range (optional).
* - min - specifies minimal value of range (mandatory).
* - max - specifies maximal value of range (mandatory).
*/
init: function() {
var tmpl = $('<div class="range-control">' +
'<div>' +
'<div class="range-control-track"/>' +
'<div class="range-control-progress"/>' +
'<datalist/>' +
'<div class="range-control-thumb"/>' +
'<input type="range"/>' +
'</div>' +
'</div>');
return $(this).each(function(_, input) {
var options = $(this).data('options'),
datalistid = (new Date()).getTime().toString(34),
$input = $(input),
$control = tmpl.clone(),
$range = $control.find('[type=range]'),
$datalist = $control.find('datalist').attr('id', datalistid),
$progress = $control.find('.range-control-progress'),
$thumb = $control.find('.range-control-thumb'),
updateHandler = function() {
var value = $range.val(),
shift = ((value - options.min) * 100 / (options.max - options.min));
$input.val(value);
$progress.css({width: shift + '%'});
$thumb.css({left: shift + '%'});
};
generateRangeElements($datalist, options);
$(this).removeAttr('data-options');
$range
.attr({
'list': datalistid,
'min': options.min,
'max': options.max,
'step': options.step,
'value': $input.val()
})
.prop('disabled', $input.prop('disabled'))
.change(updateHandler)
.focus(function() {
$control.addClass("range-control-focus");
$(document).on("mousemove", updateHandler);
})
.blur(function() {
$control.removeClass("range-control-focus");
$(document).off("mousemove", updateHandler);
})
.change();
if ($input.prop('disabled')) {
$control.addClass('disabled');
}
$control
.width(options.width)
.insertBefore($input);
$input
.change(function() {$range.val(this.value); updateHandler();})
.appendTo($control);
});
},
disable: function() {
var $input = $(this),
$range = $input.parent().find('[type=range]');
$input.parent().addClass('disabled');
$input.prop('disabled', true);
$range.prop('disabled', true);
},
enable: function() {
var $input = $(this),
$range = $input.parent().find('[type=range]');
$input.parent().removeClass('disabled');
$input.prop('disabled', false);
$range.prop('disabled', false);
}
};
$.fn.rangeControl = function(method) {
if (methods[method]) {
return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
}
return methods.init.apply(this, arguments);
};
});
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