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js/multi-step-modal.js
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+function($) {
'use strict';
var modals = $('.modal.multi-step');
modals.each(function(idx, modal) {
var $modal = $(modal);
var $buttons = $modal.find('button.step');
var total_num_steps = $buttons.length;
var $progress = $modal.find('.m-progress');
var $progress_bar = $modal.find('.m-progress-bar');
var $progress_stats = $modal.find('.m-progress-stats');
var $progress_current = $modal.find('.m-progress-current');
var $progress_total = $modal.find('.m-progress-total');
var $progress_complete = $modal.find('.m-progress-complete');
var reset_on_close = $modal.attr('reset-on-close') === 'true';
function reset() {
$modal.find('.step').hide();
$modal.find('[data-step]').hide();
}
function completeSteps() {
$progress_stats.hide();
$progress_complete.show();
$modal.find('.progress-text').animate({
top: '-2em'
});
$modal.find('.complete-indicator').animate({
top: '-2em'
});
$progress_bar.addClass('completed');
}
function getPercentComplete(current_step, total_steps) {
return Math.min(current_step / total_steps * 100, 100) + '%';
}
function updateProgress(current, total) {
$progress_bar.animate({
width: getPercentComplete(current, total)
});
if (current - 1 >= total_num_steps) {
completeSteps();
} else {
$progress_current.text(current);
}
$progress.find('[data-progress]').each(function() {
var dp = $(this);
if (dp.data().progress <= current - 1) {
dp.addClass('completed');
} else {
dp.removeClass('completed');
}
});
}
function goToStep(step) {
reset();
var to_show = $modal.find('.step-' + step);
if (to_show.length === 0) {
// at the last step, nothing else to show
return;
}
to_show.show();
var current = parseInt(step, 10);
updateProgress(current, total_num_steps);
findFirstFocusableInput(to_show).focus();
}
function findFirstFocusableInput(parent) {
var candidates = [parent.find('input'), parent.find('select'),
parent.find('textarea'),parent.find('button')],
winner = parent;
$.each(candidates, function() {
if (this.length > 0) {
winner = this[0];
return false;
}
});
return $(winner);
}
function bindEventsToModal($modal) {
var data_steps = [];
$('[data-step]').each(function() {
var step = $(this).data().step;
if (step && $.inArray(step, data_steps) === -1) {
data_steps.push(step);
}
});
$.each(data_steps, function(i, v) {
$modal.on('next.m.' + v, {step: v}, function(e) {
goToStep(e.data.step);
});
});
}
function initialize() {
reset();
updateProgress(1, total_num_steps);
$modal.find('.step-1').show();
$progress_complete.hide();
$progress_total.text(total_num_steps);
bindEventsToModal($modal, total_num_steps);
$modal.data({
total_num_steps: $buttons.length,
});
if (reset_on_close){
//Bootstrap 2.3.2
$modal.on('hidden', function () {
reset();
$modal.find('.step-1').show();
})
//Bootstrap 3
$modal.on('hidden.bs.modal', function () {
reset();
$modal.find('.step-1').show();
})
}
}
initialize();
})
}(jQuery);
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