kpsul/static/grappelli/js/jquery.grp_autocomplete_fk.js

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/**
* GRAPPELLI AUTOCOMPLETE FK
* foreign-key lookup with autocomplete
*/
(function($){
var methods = {
init: function(options) {
options = $.extend({}, $.fn.grp_autocomplete_fk.defaults, options);
return this.each(function() {
var $this = $(this);
// assign attributes
$this.attr({
"tabindex": "-1",
"readonly": "readonly"
}).addClass("grp-autocomplete-hidden-field");
// remove djangos object representation (if given)
if ($this.next().next() && $this.next().next().attr("class") != "errorlist" && $this.next().next().attr("class") != "grp-help") $this.next().next().remove();
// build autocomplete wrapper
$this.next().after(loader).after(remove_link($this.attr('id')));
$this.parent().wrapInner("<div class='grp-autocomplete-wrapper-fk'></div>");
$this.parent().prepend("<input id='" + $this.attr("id") + "-autocomplete' type='text' class='vTextField' value='' />");
// extend options
options = $.extend({
wrapper_autocomplete: $this.parent(),
input_field: $this.prev(),
remove_link: $this.next().next().hide(),
loader: $this.next().next().next().hide()
}, $.fn.grp_autocomplete_fk.defaults, options);
// lookup
lookup_id($this, options); // lookup when loading page
lookup_autocomplete($this, options); // autocomplete-handler
$this.bind("change focus keyup", function() { // id-handler
lookup_id($this, options);
});
// labels
$("label[for='"+$this.attr('id')+"']").each(function() {
$(this).attr("for", $this.attr("id")+"-autocomplete");
});
});
}
};
$.fn.grp_autocomplete_fk = function(method) {
if (methods[method]) {
return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
} else if (typeof method === 'object' || ! method) {
return methods.init.apply(this, arguments);
} else {
$.error('Method ' + method + ' does not exist on jQuery.grp_autocomplete_fk');
}
return false;
};
var loader = function() {
var loader = $('<div class="grp-loader">loader</div>');
return loader;
};
var remove_link = function(id) {
var removelink = $('<a class="grp-related-remove"></a>');
removelink.attr('id', 'remove_'+id);
removelink.attr('href', 'javascript://');
removelink.attr('onClick', 'return removeRelatedObject(this);');
removelink.hover(function() {
$(this).parent().toggleClass("grp-autocomplete-preremove");
});
return removelink;
};
var lookup_autocomplete = function(elem, options) {
options.wrapper_autocomplete.find("input:first")
.bind("focus", function() {
options.wrapper_autocomplete.addClass("grp-state-focus");
})
.bind("blur", function() {
options.wrapper_autocomplete.removeClass("grp-state-focus");
})
.autocomplete({
minLength: 1,
delay: 1000,
source: function(request, response) {
$.ajax({
url: options.autocomplete_lookup_url,
dataType: 'json',
data: "term=" + encodeURIComponent(request.term) + "&app_label=" + grappelli.get_app_label(elem) + "&model_name=" + grappelli.get_model_name(elem) + "&query_string=" + grappelli.get_query_string(elem),
beforeSend: function (XMLHttpRequest) {
options.loader.show();
},
success: function(data){
response($.map(data, function(item) {
return {label: item.label, value: item.value};
}));
},
complete: function (XMLHttpRequest, textStatus) {
options.loader.hide();
}
});
},
focus: function() { // prevent value inserted on focus
return false;
},
select: function(event, ui) {
options.input_field.val(ui.item.label);
elem.val(ui.item.value);
elem.val() ? $(options.remove_link).show() : $(options.remove_link).hide();
return false;
}
})
.data("ui-autocomplete")._renderItem = function(ul,item) {
if (!item.value) {
return $("<li></li>")
.data( "item.autocomplete", item )
.append( "<span class='error'>" + item.label)
.appendTo(ul);
} else {
return $("<li></li>")
.data( "item.autocomplete", item )
.append( "<a>" + item.label)
.appendTo(ul);
}
};
};
var lookup_id = function(elem, options) {
$.getJSON(options.lookup_url, {
object_id: elem.val(),
app_label: grappelli.get_app_label(elem),
model_name: grappelli.get_model_name(elem)
}, function(data) {
$.each(data, function(index) {
options.input_field.val(data[index].label);
elem.val() ? $(options.remove_link).show() : $(options.remove_link).hide();
});
});
};
$.fn.grp_autocomplete_fk.defaults = {
autocomplete_lookup_url: '',
lookup_url: ''
};
})(grp.jQuery);