From 6ea3aadd17f937e69d121e3ae1a415a435e3267d Mon Sep 17 00:00:00 2001
From: Carlton Gibson <carlton.gibson@noumenal.es>
Date: Thu, 24 Oct 2019 16:32:38 +0200
Subject: [PATCH] Refs #29087 -- Refactored admin inlines.js.

Split logic into separate functions to clarify and allow reuse.
---
 .../contrib/admin/static/admin/js/inlines.js  | 175 ++++++++++--------
 .../admin/static/admin/js/inlines.min.js      |  20 +-
 2 files changed, 110 insertions(+), 85 deletions(-)

diff --git a/django/contrib/admin/static/admin/js/inlines.js b/django/contrib/admin/static/admin/js/inlines.js
index ba8c9cd7fa..460b6f33b5 100644
--- a/django/contrib/admin/static/admin/js/inlines.js
+++ b/django/contrib/admin/static/admin/js/inlines.js
@@ -37,19 +37,17 @@
         var totalForms = $("#id_" + options.prefix + "-TOTAL_FORMS").prop("autocomplete", "off");
         var nextIndex = parseInt(totalForms.val(), 10);
         var maxForms = $("#id_" + options.prefix + "-MAX_NUM_FORMS").prop("autocomplete", "off");
-        // only show the add button if we are allowed to add more items,
-        // note that max_num = None translates to a blank string.
-        var showAddButton = maxForms.val() === '' || (maxForms.val() - totalForms.val()) > 0;
-        $this.each(function(i) {
-            $(this).not("." + options.emptyCssClass).addClass(options.formCssClass);
-        });
-        if ($this.length && showAddButton) {
-            var addButton = options.addButton;
+        var addButton;
+
+        /**
+         * The "Add another MyModel" button below the inline forms.
+         */
+        var 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:
-                    var numCols = this.eq(-1).children().length;
+                    var 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 {
@@ -58,73 +56,100 @@
                     addButton = $this.filter(":last").next().find("a");
                 }
             }
-            addButton.on('click', function(e) {
-                e.preventDefault();
-                var template = $("#" + options.prefix + "-empty");
-                var row = template.clone(true);
-                row.removeClass(options.emptyCssClass)
-                    .addClass(options.formCssClass)
-                    .attr("id", options.prefix + "-" + nextIndex);
-                if (row.is("tr")) {
-                    // If the forms are laid out in table rows, insert
-                    // the remove button into the last table cell:
-                    row.children(":last").append('<div><a class="' + options.deleteCssClass + '" href="#">' + options.deleteText + "</a></div>");
-                } else if (row.is("ul") || row.is("ol")) {
-                    // If they're laid out as an ordered/unordered list,
-                    // insert an <li> after the last list item:
-                    row.append('<li><a class="' + options.deleteCssClass + '" href="#">' + options.deleteText + "</a></li>");
-                } else {
-                    // Otherwise, just insert the remove button as the
-                    // last child element of the form's container:
-                    row.children(":first").append('<span><a class="' + options.deleteCssClass + '" href="#">' + options.deleteText + "</a></span>");
-                }
-                row.find("*").each(function() {
-                    updateElementIndex(this, options.prefix, totalForms.val());
-                });
-                // Insert the new form when it has been fully edited
-                row.insertBefore($(template));
-                // Update number of total forms
-                $(totalForms).val(parseInt(totalForms.val(), 10) + 1);
-                nextIndex += 1;
-                // Hide add button in case we've hit the max, except we want to add infinitely
-                if ((maxForms.val() !== '') && (maxForms.val() - totalForms.val()) <= 0) {
-                    addButton.parent().hide();
-                }
-                // The delete button of each row triggers a bunch of other things
-                row.find("a." + options.deleteCssClass).on('click', function(e1) {
-                    e1.preventDefault();
-                    // Remove the parent form containing this button:
-                    row.remove();
-                    nextIndex -= 1;
-                    // If a post-delete callback was provided, call it with the deleted form:
-                    if (options.removed) {
-                        options.removed(row);
-                    }
-                    $(document).trigger('formset:removed', [row, options.prefix]);
-                    // Update the TOTAL_FORMS form count.
-                    var forms = $("." + options.formCssClass);
-                    $("#id_" + options.prefix + "-TOTAL_FORMS").val(forms.length);
-                    // Show add button again once we drop below max
-                    if ((maxForms.val() === '') || (maxForms.val() - forms.length) > 0) {
-                        addButton.parent().show();
-                    }
-                    // Also, update names and ids for all remaining form controls
-                    // so they remain in sequence:
-                    var i, formCount;
-                    var updateElementCallback = function() {
-                        updateElementIndex(this, options.prefix, i);
-                    };
-                    for (i = 0, formCount = forms.length; i < formCount; i++) {
-                        updateElementIndex($(forms).get(i), options.prefix, i);
-                        $(forms.get(i)).find("*").each(updateElementCallback);
-                    }
-                });
-                // If a post-add callback was supplied, call it with the added form:
-                if (options.added) {
-                    options.added(row);
-                }
-                $(document).trigger('formset:added', [row, options.prefix]);
+            addButton.on('click', addInlineClickHandler);
+        };
+
+        var addInlineClickHandler = function(e) {
+            e.preventDefault();
+            var template = $("#" + options.prefix + "-empty");
+            var row = template.clone(true);
+            row.removeClass(options.emptyCssClass)
+                .addClass(options.formCssClass)
+                .attr("id", options.prefix + "-" + nextIndex);
+            addInlineDeleteButton(row);
+            row.find("*").each(function() {
+                updateElementIndex(this, options.prefix, totalForms.val());
             });
+            // Insert the new form when it has been fully edited.
+            row.insertBefore($(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();
+            }
+            // 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.)
+         */
+        var 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));
+        };
+
+        var inlineDeleteHandler = function(e1) {
+            e1.preventDefault();
+            var deleteButton = $(e1.target);
+            var row = deleteButton.closest('.' + options.formCssClass);
+            // Remove the parent form containing this button:
+            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.
+            var forms = $("." + options.formCssClass);
+            $("#id_" + options.prefix + "-TOTAL_FORMS").val(forms.length);
+            // Show add button again once below maximum number.
+            if ((maxForms.val() === '') || (maxForms.val() - forms.length) > 0) {
+                addButton.parent().show();
+            }
+            // Also, update names and ids for all remaining form controls so
+            // they remain in sequence:
+            var i, formCount;
+            var updateElementCallback = function() {
+                updateElementIndex(this, options.prefix, i);
+            };
+            for (i = 0, formCount = forms.length; i < formCount; i++) {
+                updateElementIndex($(forms).get(i), options.prefix, i);
+                $(forms.get(i)).find("*").each(updateElementCallback);
+            }
+        };
+
+        // Show the add button if we are allowed to add more items.
+        // Note that max_num = None translates to a blank string.
+        var showAddButton = maxForms.val() === '' || (maxForms.val() - totalForms.val()) > 0;
+        $this.each(function(i) {
+            $(this).not("." + options.emptyCssClass).addClass(options.formCssClass);
+        });
+
+        // Create the add button.
+        addButton = options.addButton;
+        if ($this.length && showAddButton) {
+            addInlineAddButton();
         }
         return this;
     };
diff --git a/django/contrib/admin/static/admin/js/inlines.min.js b/django/contrib/admin/static/admin/js/inlines.min.js
index 0b818ca39e..e2d61af0bd 100644
--- a/django/contrib/admin/static/admin/js/inlines.min.js
+++ b/django/contrib/admin/static/admin/js/inlines.min.js
@@ -1,10 +1,10 @@
-(function(b){b.fn.formset=function(c){var a=b.extend({},b.fn.formset.defaults,c),d=b(this);c=d.parent();var h=function(a,e,f){var c=new RegExp("("+e+"-(\\d+|__prefix__))");e=e+"-"+f;b(a).prop("for")&&b(a).prop("for",b(a).prop("for").replace(c,e));a.id&&(a.id=a.id.replace(c,e));a.name&&(a.name=a.name.replace(c,e))},g=b("#id_"+a.prefix+"-TOTAL_FORMS").prop("autocomplete","off"),k=parseInt(g.val(),10),e=b("#id_"+a.prefix+"-MAX_NUM_FORMS").prop("autocomplete","off"),f=""===e.val()||0<e.val()-g.val();
-d.each(function(e){b(this).not("."+a.emptyCssClass).addClass(a.formCssClass)});if(d.length&&f){var m=a.addButton;null===m&&("TR"===d.prop("tagName")?(d=this.eq(-1).children().length,c.append('<tr class="'+a.addCssClass+'"><td colspan="'+d+'"><a href="#">'+a.addText+"</a></tr>"),m=c.find("tr:last a")):(d.filter(":last").after('<div class="'+a.addCssClass+'"><a href="#">'+a.addText+"</a></div>"),m=d.filter(":last").next().find("a")));m.on("click",function(f){f.preventDefault();f=b("#"+a.prefix+"-empty");
-var c=f.clone(!0);c.removeClass(a.emptyCssClass).addClass(a.formCssClass).attr("id",a.prefix+"-"+k);c.is("tr")?c.children(":last").append('<div><a class="'+a.deleteCssClass+'" href="#">'+a.deleteText+"</a></div>"):c.is("ul")||c.is("ol")?c.append('<li><a class="'+a.deleteCssClass+'" href="#">'+a.deleteText+"</a></li>"):c.children(":first").append('<span><a class="'+a.deleteCssClass+'" href="#">'+a.deleteText+"</a></span>");c.find("*").each(function(){h(this,a.prefix,g.val())});c.insertBefore(b(f));
-b(g).val(parseInt(g.val(),10)+1);k+=1;""!==e.val()&&0>=e.val()-g.val()&&m.parent().hide();c.find("a."+a.deleteCssClass).on("click",function(f){f.preventDefault();c.remove();--k;a.removed&&a.removed(c);b(document).trigger("formset:removed",[c,a.prefix]);f=b("."+a.formCssClass);b("#id_"+a.prefix+"-TOTAL_FORMS").val(f.length);(""===e.val()||0<e.val()-f.length)&&m.parent().show();var d,g=function(){h(this,a.prefix,l)};var l=0;for(d=f.length;l<d;l++)h(b(f).get(l),a.prefix,l),b(f.get(l)).find("*").each(g)});
-a.added&&a.added(c);b(document).trigger("formset:added",[c,a.prefix])})}return this};b.fn.formset.defaults={prefix:"form",addText:"add another",deleteText:"remove",addCssClass:"add-row",deleteCssClass:"delete-row",emptyCssClass:"empty-row",formCssClass:"dynamic-form",added:null,removed:null,addButton:null};b.fn.tabularFormset=function(c,a){var d=b(this),h=function(a){b(c).not(".add-row").removeClass("row1 row2").filter(":even").addClass("row1").end().filter(":odd").addClass("row2")},g=function(){"undefined"!==
-typeof SelectFilter&&(b(".selectfilter").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!1)}),b(".selectfilterstacked").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!0)}))},k=function(a){a.find(".prepopulated_field").each(function(){var c=b(this).find("input, select, textarea"),e=c.data("dependency_list")||[],d=[];b.each(e,function(b,c){d.push("#"+a.find(".field-"+c).find("input, select, textarea").attr("id"))});d.length&&c.prepopulate(d,
-c.attr("maxlength"))})};d.formset({prefix:a.prefix,addText:a.addText,formCssClass:"dynamic-"+a.prefix,deleteCssClass:"inline-deletelink",deleteText:a.deleteText,emptyCssClass:"empty-form",removed:h,added:function(a){k(a);"undefined"!==typeof DateTimeShortcuts&&(b(".datetimeshortcuts").remove(),DateTimeShortcuts.init());g();h(a)},addButton:a.addButton});return d};b.fn.stackedFormset=function(c,a){var d=b(this),h=function(a){b(c).find(".inline_label").each(function(a){a+=1;b(this).html(b(this).html().replace(/(#\d+)/g,
-"#"+a))})},g=function(){"undefined"!==typeof SelectFilter&&(b(".selectfilter").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!1)}),b(".selectfilterstacked").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!0)}))},k=function(a){a.find(".prepopulated_field").each(function(){var c=b(this).find("input, select, textarea"),d=c.data("dependency_list")||[],e=[];b.each(d,function(b,c){e.push("#"+a.find(".form-row .field-"+c).find("input, select, textarea").attr("id"))});
-e.length&&c.prepopulate(e,c.attr("maxlength"))})};d.formset({prefix:a.prefix,addText:a.addText,formCssClass:"dynamic-"+a.prefix,deleteCssClass:"inline-deletelink",deleteText:a.deleteText,emptyCssClass:"empty-form",removed:h,added:function(a){k(a);"undefined"!==typeof DateTimeShortcuts&&(b(".datetimeshortcuts").remove(),DateTimeShortcuts.init());g();h(a)},addButton:a.addButton});return d};b(document).ready(function(){b(".js-inline-admin-formset").each(function(){var c=b(this).data(),a=c.inlineFormset;
-switch(c.inlineType){case "stacked":c=a.name+"-group .inline-related";b(c).stackedFormset(c,a.options);break;case "tabular":c=a.name+"-group .tabular.inline-related tbody:first > tr",b(c).tabularFormset(c,a.options)}})})})(django.jQuery);
+(function(b){b.fn.formset=function(c){var a=b.extend({},b.fn.formset.defaults,c),d=b(this),h=d.parent(),l=function(a,e,k){var f=new RegExp("("+e+"-(\\d+|__prefix__))");e=e+"-"+k;b(a).prop("for")&&b(a).prop("for",b(a).prop("for").replace(f,e));a.id&&(a.id=a.id.replace(f,e));a.name&&(a.name=a.name.replace(f,e))},g=b("#id_"+a.prefix+"-TOTAL_FORMS").prop("autocomplete","off"),e=parseInt(g.val(),10),k=b("#id_"+a.prefix+"-MAX_NUM_FORMS").prop("autocomplete","off");c=function(){if(null===m)if("TR"===d.prop("tagName")){var b=
+d.eq(-1).children().length;h.append('<tr class="'+a.addCssClass+'"><td colspan="'+b+'"><a href="#">'+a.addText+"</a></tr>");m=h.find("tr:last a")}else d.filter(":last").after('<div class="'+a.addCssClass+'"><a href="#">'+a.addText+"</a></div>"),m=d.filter(":last").next().find("a");m.on("click",n)};var n=function(f){f.preventDefault();f=b("#"+a.prefix+"-empty");var c=f.clone(!0);c.removeClass(a.emptyCssClass).addClass(a.formCssClass).attr("id",a.prefix+"-"+e);p(c);c.find("*").each(function(){l(this,
+a.prefix,g.val())});c.insertBefore(b(f));b(g).val(parseInt(g.val(),10)+1);e+=1;""!==k.val()&&0>=k.val()-g.val()&&m.parent().hide();a.added&&a.added(c);b(document).trigger("formset:added",[c,a.prefix])},p=function(b){b.is("tr")?b.children(":last").append('<div><a class="'+a.deleteCssClass+'" href="#">'+a.deleteText+"</a></div>"):b.is("ul")||b.is("ol")?b.append('<li><a class="'+a.deleteCssClass+'" href="#">'+a.deleteText+"</a></li>"):b.children(":first").append('<span><a class="'+a.deleteCssClass+'" href="#">'+
+a.deleteText+"</a></span>");b.find("a."+a.deleteCssClass).on("click",q.bind(this))},q=function(c){c.preventDefault();c=b(c.target).closest("."+a.formCssClass);c.remove();--e;a.removed&&a.removed(c);b(document).trigger("formset:removed",[c,a.prefix]);c=b("."+a.formCssClass);b("#id_"+a.prefix+"-TOTAL_FORMS").val(c.length);(""===k.val()||0<k.val()-c.length)&&m.parent().show();var d,g=function(){l(this,a.prefix,f)};var f=0;for(d=c.length;f<d;f++)l(b(c).get(f),a.prefix,f),b(c.get(f)).find("*").each(g)},
+r=""===k.val()||0<k.val()-g.val();d.each(function(e){b(this).not("."+a.emptyCssClass).addClass(a.formCssClass)});var m=a.addButton;d.length&&r&&c();return this};b.fn.formset.defaults={prefix:"form",addText:"add another",deleteText:"remove",addCssClass:"add-row",deleteCssClass:"delete-row",emptyCssClass:"empty-row",formCssClass:"dynamic-form",added:null,removed:null,addButton:null};b.fn.tabularFormset=function(c,a){var d=b(this),h=function(a){b(c).not(".add-row").removeClass("row1 row2").filter(":even").addClass("row1").end().filter(":odd").addClass("row2")},
+l=function(){"undefined"!==typeof SelectFilter&&(b(".selectfilter").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!1)}),b(".selectfilterstacked").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!0)}))},g=function(a){a.find(".prepopulated_field").each(function(){var c=b(this).find("input, select, textarea"),e=c.data("dependency_list")||[],d=[];b.each(e,function(b,c){d.push("#"+a.find(".field-"+c).find("input, select, textarea").attr("id"))});
+d.length&&c.prepopulate(d,c.attr("maxlength"))})};d.formset({prefix:a.prefix,addText:a.addText,formCssClass:"dynamic-"+a.prefix,deleteCssClass:"inline-deletelink",deleteText:a.deleteText,emptyCssClass:"empty-form",removed:h,added:function(a){g(a);"undefined"!==typeof DateTimeShortcuts&&(b(".datetimeshortcuts").remove(),DateTimeShortcuts.init());l();h(a)},addButton:a.addButton});return d};b.fn.stackedFormset=function(c,a){var d=b(this),h=function(a){b(c).find(".inline_label").each(function(a){a+=1;
+b(this).html(b(this).html().replace(/(#\d+)/g,"#"+a))})},l=function(){"undefined"!==typeof SelectFilter&&(b(".selectfilter").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!1)}),b(".selectfilterstacked").each(function(a,b){a=b.name.split("-");SelectFilter.init(b.id,a[a.length-1],!0)}))},g=function(a){a.find(".prepopulated_field").each(function(){var c=b(this).find("input, select, textarea"),d=c.data("dependency_list")||[],e=[];b.each(d,function(b,c){e.push("#"+a.find(".form-row .field-"+
+c).find("input, select, textarea").attr("id"))});e.length&&c.prepopulate(e,c.attr("maxlength"))})};d.formset({prefix:a.prefix,addText:a.addText,formCssClass:"dynamic-"+a.prefix,deleteCssClass:"inline-deletelink",deleteText:a.deleteText,emptyCssClass:"empty-form",removed:h,added:function(a){g(a);"undefined"!==typeof DateTimeShortcuts&&(b(".datetimeshortcuts").remove(),DateTimeShortcuts.init());l();h(a)},addButton:a.addButton});return d};b(document).ready(function(){b(".js-inline-admin-formset").each(function(){var c=
+b(this).data(),a=c.inlineFormset;switch(c.inlineType){case "stacked":c=a.name+"-group .inline-related";b(c).stackedFormset(c,a.options);break;case "tabular":c=a.name+"-group .tabular.inline-related tbody:first > tr",b(c).tabularFormset(c,a.options)}})})})(django.jQuery);