196 lines
8.7 KiB
JavaScript
196 lines
8.7 KiB
JavaScript
/**
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* GRAPPELLI AUTOCOMPLETE M2M
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* many-to-many lookup with autocomplete
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*/
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(function($){
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var methods = {
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init: function(options) {
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options = $.extend({}, $.fn.grp_autocomplete_m2m.defaults, options);
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return this.each(function() {
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var $this = $(this);
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// assign attributes
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$this.attr({
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"tabindex": "-1",
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"readonly": "readonly"
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}).addClass("grp-autocomplete-hidden-field");
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// build autocomplete wrapper
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$this.next().after(loader).after(remove_link($this.attr('id')));
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$this.parent().wrapInner("<div class='grp-autocomplete-wrapper-m2m'></div>");
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//$this.parent().prepend("<ul class='search'><li class='search'><input id='" + $this.attr("id") + "-autocomplete' type='text' class='vTextField' value='' /></li></ul>").prepend("<ul class='repr'></ul>");
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$this.parent().prepend("<ul class='grp-repr'><li class='grp-search'><input id='" + $this.attr("id") + "-autocomplete' type='text' class='vTextField' value='' /></li></ul>");
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// defaults
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options = $.extend({
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wrapper_autocomplete: $this.parent(),
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wrapper_repr: $this.parent().find("ul.grp-repr"),
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wrapper_search: $this.parent().find("li.grp-search"),
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remove_link: $this.next().next().hide(),
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loader: $this.next().next().next().hide()
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}, $.fn.grp_autocomplete_m2m.defaults, options);
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// move errorlist outside the wrapper
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if ($this.parent().find("ul.errorlist")) {
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$this.parent().find("ul.errorlist").detach().appendTo($this.parent().parent());
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}
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// lookup
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lookup_id($this, options); // lookup when loading page
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lookup_autocomplete($this, options); // autocomplete-handler
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$this.bind("change focus keyup", function() { // id-handler
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lookup_id($this, options);
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});
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// labels
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$("label[for='"+$this.attr('id')+"']").each(function() {
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$(this).attr("for", $this.attr("id")+"-autocomplete");
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});
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// click on div > focus input
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options.wrapper_autocomplete.bind("click", function(e) {
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// prevent focus when clicking on remove/select
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if (!$(e.target).hasClass("related-lookup") && !$(e.target).hasClass("grp-related-remove")) {
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options.wrapper_search.find("input:first").focus();
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}
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});
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});
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}
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};
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$.fn.grp_autocomplete_m2m = function(method) {
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if (methods[method]) {
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return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
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} else if (typeof method === 'object' || ! method) {
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return methods.init.apply(this, arguments);
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} else {
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$.error('Method ' + method + ' does not exist on jQuery.grp_autocomplete_m2m');
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}
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return false;
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};
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var value_add = function(elem, value, options) {
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var values = [];
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if (elem.val()) values = elem.val().split(",");
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values.push(value);
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elem.val(values.join(","));
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return values.join(",");
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};
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var value_remove = function(elem, position, options) {
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var values = [];
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if (elem.val()) values = elem.val().split(",");
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values.splice(position,1);
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elem.val(values.join(","));
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return values.join(",");
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};
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var loader = function() {
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var loader = $('<div class="grp-loader">loader</div>');
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return loader;
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};
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var remove_link = function(id) {
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var removelink = $('<a class="grp-related-remove"></a>');
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removelink.attr('id', 'remove_'+id);
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removelink.attr('href', 'javascript://');
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removelink.attr('onClick', 'return removeRelatedObject(this);');
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removelink.hover(function() {
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$(this).parent().toggleClass("grp-autocomplete-preremove");
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});
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return removelink;
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};
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var repr_add = function(elem, label, options) {
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var repr = $('<li class="grp-repr"></li>');
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var removelink = $('<a class="grp-m2m-remove" href="javascript://">' + label + '</a>');
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repr.append(removelink);
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repr.insertBefore(options.wrapper_search);
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removelink.bind("click", function(e) { // remove-handler
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var pos = $(this).parent().parent().children("li").index($(this).parent());
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value_remove(elem, pos, options);
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$(this).parent().remove();
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elem.val() ? $(options.remove_link).show() : $(options.remove_link).hide();
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e.stopPropagation(); // prevent focus on input
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});
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removelink.hover(function() {
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$(this).parent().toggleClass("grp-autocomplete-preremove");
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});
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};
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var lookup_autocomplete = function(elem, options) {
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options.wrapper_search.find("input:first")
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.bind("keydown", function(event) { // don't navigate away from the field on tab when selecting an item
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if (event.keyCode === $.ui.keyCode.TAB && $(this).data("autocomplete").menu.active) {
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event.preventDefault();
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}
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})
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.bind("focus", function() {
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options.wrapper_autocomplete.addClass("grp-state-focus");
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})
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.bind("blur", function() {
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options.wrapper_autocomplete.removeClass("grp-state-focus");
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})
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.autocomplete({
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minLength: 1,
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delay: 1000,
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position: {my: "left top", at: "left bottom", of: options.wrapper_autocomplete},
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open: function(event, ui) {
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$(".ui-menu").width(options.wrapper_autocomplete.outerWidth()-6);
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},
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source: function(request, response) {
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$.ajax({
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url: options.autocomplete_lookup_url,
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dataType: 'json',
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data: "term=" + encodeURIComponent(request.term) + "&app_label=" + grappelli.get_app_label(elem) + "&model_name=" + grappelli.get_model_name(elem) + "&query_string=" + grappelli.get_query_string(elem),
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beforeSend: function (XMLHttpRequest) {
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options.loader.show();
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},
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success: function(data){
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response($.map(data, function(item) {
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return {label: item.label, value: item.value};
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}));
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},
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complete: function (XMLHttpRequest, textStatus) {
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options.loader.hide();
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}
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});
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},
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focus: function() { // prevent value inserted on focus
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return false;
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},
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select: function(event, ui) { // add repr, add value
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repr_add(elem, ui.item.label, options);
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value_add(elem, ui.item.value, options);
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elem.val() ? $(options.remove_link).show() : $(options.remove_link).hide();
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$(this).val("").focus();
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return false;
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}
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})
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.data("ui-autocomplete")._renderItem = function(ul,item) {
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if (!item.value) {
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return $("<li></li>")
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.data( "item.autocomplete", item )
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.append( "<span class='error'>" + item.label)
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.appendTo(ul);
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} else {
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return $("<li></li>")
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.data( "item.autocomplete", item )
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.append( "<a>" + item.label)
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.appendTo(ul);
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}
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};
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};
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var lookup_id = function(elem, options) {
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$.getJSON(options.lookup_url, {
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object_id: elem.val(),
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app_label: grappelli.get_app_label(elem),
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model_name: grappelli.get_model_name(elem)
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}, function(data) {
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options.wrapper_repr.find("li.grp-repr").remove();
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options.wrapper_search.find("input").val("");
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$.each(data, function(index) {
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if (data[index].value) repr_add(elem, data[index].label, options);
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});
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elem.val() ? $(options.remove_link).show() : $(options.remove_link).hide();
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});
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};
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})(grp.jQuery);
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