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inlines.js
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Fri, Nov 1, 21:51

inlines.js
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/*global DateTimeShortcuts, SelectFilter*/
/**
* Django admin inlines
*
* Based on jQuery Formset 1.1
* @author Stanislaus Madueke (stan DOT madueke AT gmail DOT com)
* @requires jQuery 1.2.6 or later
*
* Copyright (c) 2009, Stanislaus Madueke
* All rights reserved.
*
* Spiced up with Code from Zain Memon's GSoC project 2009
* and modified for Django by Jannis Leidel, Travis Swicegood and Julien Phalip.
*
* Licensed under the New BSD License
* See: https://opensource.org/licenses/bsd-license.php
*/
'use strict';
{
const $ = django.jQuery;
$.fn.formset = function(opts) {
const options = $.extend({}, $.fn.formset.defaults, opts);
const $this = $(this);
const $parent = $this.parent();
const updateElementIndex = function(el, prefix, ndx) {
const id_regex = new RegExp("(" + prefix + "-(\\d+|__prefix__))");
const replacement = prefix + "-" + ndx;
if ($(el).prop("for")) {
$(el).prop("for", $(el).prop("for").replace(id_regex, replacement));
}
if (el.id) {
el.id = el.id.replace(id_regex, replacement);
}
if (el.name) {
el.name = el.name.replace(id_regex, replacement);
}
};
const totalForms = $("#id_" + options.prefix + "-TOTAL_FORMS").prop("autocomplete", "off");
let nextIndex = parseInt(totalForms.val(), 10);
const maxForms = $("#id_" + options.prefix + "-MAX_NUM_FORMS").prop("autocomplete", "off");
const minForms = $("#id_" + options.prefix + "-MIN_NUM_FORMS").prop("autocomplete", "off");
let addButton;
/**
* The "Add another MyModel" button below the inline forms.
*/
const addInlineAddButton = function() {
if (addButton === null) {
if ($this.prop("tagName") === "TR") {
// If forms are laid out as table rows, insert the
// "add" button in a new table row:
const numCols = $this.eq(-1).children().length;
$parent.append('<tr class="' + options.addCssClass + '"><td colspan="' + numCols + '"><a href="#">' + options.addText + "</a></tr>");
addButton = $parent.find("tr:last a");
} else {
// Otherwise, insert it immediately after the last form:
$this.filter(":last").after('<div class="' + options.addCssClass + '"><a href="#">' + options.addText + "</a></div>");
addButton = $this.filter(":last").next().find("a");
}
}
addButton.on('click', addInlineClickHandler);
};
const addInlineClickHandler = function(e) {
e.preventDefault();
const template = $("#" + options.prefix + "-empty");
const row = template.clone(true);
row.removeClass(options.emptyCssClass)
.addClass(options.formCssClass)
.attr("id", options.prefix + "-" + nextIndex);
addInlineDeleteButton(row);
row.find("*").each(function() {
updateElementIndex(this, options.prefix, totalForms.val());
});
// Insert the new form when it has been fully edited.
row.insertBefore($(template));
// Update number of total forms.
$(totalForms).val(parseInt(totalForms.val(), 10) + 1);
nextIndex += 1;
// Hide the add button if there's a limit and it's been reached.
if ((maxForms.val() !== '') && (maxForms.val() - totalForms.val()) <= 0) {
addButton.parent().hide();
}
// Show the remove buttons if there are more than min_num.
toggleDeleteButtonVisibility(row.closest('.inline-group'));
// Pass the new form to the post-add callback, if provided.
if (options.added) {
options.added(row);
}
$(document).trigger('formset:added', [row, options.prefix]);
};
/**
* The "X" button that is part of every unsaved inline.
* (When saved, it is replaced with a "Delete" checkbox.)
*/
const addInlineDeleteButton = function(row) {
if (row.is("tr")) {
// If the forms are laid out in table rows, insert
// the remove button into the last table cell:
row.children(":last").append('<div><a class="' + options.deleteCssClass + '" href="#">' + options.deleteText + "</a></div>");
} else if (row.is("ul") || row.is("ol")) {
// If they're laid out as an ordered/unordered list,
// insert an <li> after the last list item:
row.append('<li><a class="' + options.deleteCssClass + '" href="#">' + options.deleteText + "</a></li>");
} else {
// Otherwise, just insert the remove button as the
// last child element of the form's container:
row.children(":first").append('<span><a class="' + options.deleteCssClass + '" href="#">' + options.deleteText + "</a></span>");
}
// Add delete handler for each row.
row.find("a." + options.deleteCssClass).on('click', inlineDeleteHandler.bind(this));
};
const inlineDeleteHandler = function(e1) {
e1.preventDefault();
const deleteButton = $(e1.target);
const row = deleteButton.closest('.' + options.formCssClass);
const inlineGroup = row.closest('.inline-group');
// Remove the parent form containing this button,
// and also remove the relevant row with non-field errors:
const prevRow = row.prev();
if (prevRow.length && prevRow.hasClass('row-form-errors')) {
prevRow.remove();
}
row.remove();
nextIndex -= 1;
// Pass the deleted form to the post-delete callback, if provided.
if (options.removed) {
options.removed(row);
}
$(document).trigger('formset:removed', [row, options.prefix]);
// Update the TOTAL_FORMS form count.
const forms = $("." + options.formCssClass);
$("#id_" + options.prefix + "-TOTAL_FORMS").val(forms.length);
// Show add button again once below maximum number.
if ((maxForms.val() === '') || (maxForms.val() - forms.length) > 0) {
addButton.parent().show();
}
// Hide the remove buttons if at min_num.
toggleDeleteButtonVisibility(inlineGroup);
// Also, update names and ids for all remaining form controls so
// they remain in sequence:
let i, formCount;
const updateElementCallback = function() {
updateElementIndex(this, options.prefix, i);
};
for (i = 0, formCount = forms.length; i < formCount; i++) {
updateElementIndex($(forms).get(i), options.prefix, i);
$(forms.get(i)).find("*").each(updateElementCallback);
}
};
const toggleDeleteButtonVisibility = function(inlineGroup) {
if ((minForms.val() !== '') && (minForms.val() - totalForms.val()) >= 0) {
inlineGroup.find('.inline-deletelink').hide();
} else {
inlineGroup.find('.inline-deletelink').show();
}
};
$this.each(function(i) {
$(this).not("." + options.emptyCssClass).addClass(options.formCssClass);
});
// Create the delete buttons for all unsaved inlines:
$this.filter('.' + options.formCssClass + ':not(.has_original):not(.' + options.emptyCssClass + ')').each(function() {
addInlineDeleteButton($(this));
});
toggleDeleteButtonVisibility($this);
// Create the add button, initially hidden.
addButton = options.addButton;
addInlineAddButton();
// Show the add button if allowed to add more items.
// Note that max_num = None translates to a blank string.
const showAddButton = maxForms.val() === '' || (maxForms.val() - totalForms.val()) > 0;
if ($this.length && showAddButton) {
addButton.parent().show();
} else {
addButton.parent().hide();
}
return this;
};
/* Setup plugin defaults */
$.fn.formset.defaults = {
prefix: "form", // The form prefix for your django formset
addText: "add another", // Text for the add link
deleteText: "remove", // Text for the delete link
addCssClass: "add-row", // CSS class applied to the add link
deleteCssClass: "delete-row", // CSS class applied to the delete link
emptyCssClass: "empty-row", // CSS class applied to the empty row
formCssClass: "dynamic-form", // CSS class applied to each form in a formset
added: null, // Function called each time a new form is added
removed: null, // Function called each time a form is deleted
addButton: null // Existing add button to use
};
// Tabular inlines ---------------------------------------------------------
$.fn.tabularFormset = function(selector, options) {
const $rows = $(this);
const reinitDateTimeShortCuts = function() {
// Reinitialize the calendar and clock widgets by force
if (typeof DateTimeShortcuts !== "undefined") {
$(".datetimeshortcuts").remove();
DateTimeShortcuts.init();
}
};
const updateSelectFilter = function() {
// If any SelectFilter widgets are a part of the new form,
// instantiate a new SelectFilter instance for it.
if (typeof SelectFilter !== 'undefined') {
$('.selectfilter').each(function(index, value) {
const namearr = value.name.split('-');
SelectFilter.init(value.id, namearr[namearr.length - 1], false);
});
$('.selectfilterstacked').each(function(index, value) {
const namearr = value.name.split('-');
SelectFilter.init(value.id, namearr[namearr.length - 1], true);
});
}
};
const initPrepopulatedFields = function(row) {
row.find('.prepopulated_field').each(function() {
const field = $(this),
input = field.find('input, select, textarea'),
dependency_list = input.data('dependency_list') || [],
dependencies = [];
$.each(dependency_list, function(i, field_name) {
dependencies.push('#' + row.find('.field-' + field_name).find('input, select, textarea').attr('id'));
});
if (dependencies.length) {
input.prepopulate(dependencies, input.attr('maxlength'));
}
});
};
$rows.formset({
prefix: options.prefix,
addText: options.addText,
formCssClass: "dynamic-" + options.prefix,
deleteCssClass: "inline-deletelink",
deleteText: options.deleteText,
emptyCssClass: "empty-form",
added: function(row) {
initPrepopulatedFields(row);
reinitDateTimeShortCuts();
updateSelectFilter();
},
addButton: options.addButton
});
return $rows;
};
// Stacked inlines ---------------------------------------------------------
$.fn.stackedFormset = function(selector, options) {
const $rows = $(this);
const updateInlineLabel = function(row) {
$(selector).find(".inline_label").each(function(i) {
const count = i + 1;
$(this).html($(this).html().replace(/(#\d+)/g, "#" + count));
});
};
const reinitDateTimeShortCuts = function() {
// Reinitialize the calendar and clock widgets by force, yuck.
if (typeof DateTimeShortcuts !== "undefined") {
$(".datetimeshortcuts").remove();
DateTimeShortcuts.init();
}
};
const updateSelectFilter = function() {
// If any SelectFilter widgets were added, instantiate a new instance.
if (typeof SelectFilter !== "undefined") {
$(".selectfilter").each(function(index, value) {
const namearr = value.name.split('-');
SelectFilter.init(value.id, namearr[namearr.length - 1], false);
});
$(".selectfilterstacked").each(function(index, value) {
const namearr = value.name.split('-');
SelectFilter.init(value.id, namearr[namearr.length - 1], true);
});
}
};
const initPrepopulatedFields = function(row) {
row.find('.prepopulated_field').each(function() {
const field = $(this),
input = field.find('input, select, textarea'),
dependency_list = input.data('dependency_list') || [],
dependencies = [];
$.each(dependency_list, function(i, field_name) {
dependencies.push('#' + row.find('.form-row .field-' + field_name).find('input, select, textarea').attr('id'));
});
if (dependencies.length) {
input.prepopulate(dependencies, input.attr('maxlength'));
}
});
};
$rows.formset({
prefix: options.prefix,
addText: options.addText,
formCssClass: "dynamic-" + options.prefix,
deleteCssClass: "inline-deletelink",
deleteText: options.deleteText,
emptyCssClass: "empty-form",
removed: updateInlineLabel,
added: function(row) {
initPrepopulatedFields(row);
reinitDateTimeShortCuts();
updateSelectFilter();
updateInlineLabel(row);
},
addButton: options.addButton
});
return $rows;
};
$(document).ready(function() {
$(".js-inline-admin-formset").each(function() {
const data = $(this).data(),
inlineOptions = data.inlineFormset;
let selector;
switch(data.inlineType) {
case "stacked":
selector = inlineOptions.name + "-group .inline-related";
$(selector).stackedFormset(selector, inlineOptions.options);
break;
case "tabular":
selector = inlineOptions.name + "-group .tabular.inline-related tbody:first > tr.form-row";
$(selector).tabularFormset(selector, inlineOptions.options);
break;
}
});
});
}

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