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logiform.js
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logiform.js
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(function($) {
$.logiform = function(element, options) {
var defaults = {
'target': null,
'onUpdate': null,
'prettify': false,
'liveUpdate': false,
'hideOriginal': true,
'data': '{"$and":[]}',
'divider': '|',
'width': {
'logicalOperator': "80px",
'field': "200px",
'comparisonOperator': "100px",
'value': "200px"
},
'text': {
'add-condition': '+ Condition',
'add-condition-group': '+ Group',
'remove-condition': '-',
'remove-condition-group': 'Remove',
'$and': 'AND',
'$or': 'OR',
'$nor': 'NOR',
'$eq': '= Equal',
'$ne': '!= Not Equal',
'$gt': '> Greater than',
'$gte': '>= Greater than or equal',
'$lt': '< Less than',
'$lte': '<= Less than or equal',
'$all': 'Match all elements in array',
'$in': 'Match in array',
'$nin': 'Not match in array',
},
'operators': {
'logical': [
'$and',
'$or',
'|',
'$nor',
],
'comparison': [
'$eq',
'$ne',
'|',
'$gt',
'$gte',
'$lt',
'$lte',
'|',
'$all',
'$in',
'$nin',
]
}
};
var logiform = this;
var root;
logiform.settings = {}
var condition_group_mockup;
var condition_group;
var fieldValueMockup = {};
var $element = $(element);
logiform.init = function() {
logiform.settings = $.extend(true, {}, defaults, options);
// Prepare content
// TODO: expose templates
var divider_option = '<option data-divider="true" disabled>----</option>';
// Prepare logical operators
var logicalOperatorItems = ''
for (var i = 0, sz = logiform.settings.operators.logical.length; i < sz; i++) {
item = logiform.settings.operators.logical[i];
if (item == logiform.settings.divider) {
logicalOperatorItems += divider_option;
} else {
logicalOperatorItems += '<option value="'+item+'">'+logiform.settings.text[item]+'</option>';
}
}
var logicalOperatorContent =
'<select class="lf-logicaloperator selectpicker" data-width="'+logiform.settings.width.logicalOperator+'">' +
logicalOperatorItems +
'</select>';
// Prepare comparison operators
var comparisonOperatorItems = '';
for (var i = 0, sz = logiform.settings.operators.comparison.length; i < sz; i++) {
item = logiform.settings.operators.comparison[i];
if (item == logiform.settings.divider) {
comparisonOperatorItems += divider_option
} else {
comparisonOperatorItems += '<option value="'+item+'">'+logiform.settings.text[item]+'</option>';
}
}
var comparisonOperatorContent =
'<select class="lf-comparisonoperator selectpicker" data-width="'+logiform.settings.width.comparisonOperator+'">' +
comparisonOperatorItems +
'</select>';
// Prepare field items and its mockup element for value.
var firstFieldValueMockup = '';
var fieldItems = '';
for (var i = 0, sz = logiform.settings.schema.length; i < sz; i++) {
item = logiform.settings.schema[i];
if (item.id == logiform.settings.divider) {
fieldItems += divider_option;
} else {
fieldItems += '<option value="'+item['id']+'">'+item['description']+'</option>';
// TODO: Create a suitable mockup for each field type
if (item['candidates']) {
var candidates = '';
for (var idxOption = 0, szOption = item['candidates'].length; idxOption < szOption; idxOption++) {
var option = item['candidates'][idxOption];
if (option instanceof Array) {
candidates += '<option value="'+option[0]+'">'+option[1]+'</option>';
} else if (option == logiform.settings.divider) {
candidates += divider_option;
} else {
candidates += '<option value="'+option+'">'+option+'</option>';
}
}
fieldValueMockup[item['id']] =
'<select class="lf-value selectpicker"' +
' data-type="' + item['type'] + '"' +
' data-width="' + logiform.settings.width.value + '"' +
((item['multiple'] === true) ? ' multiple' : '') +
'>' +
candidates +
'</select>';
} else {
fieldValueMockup[item['id']] =
'<input class="lf-value form-control" type="text"' +
' data-type="' + item['type'] + '"' +
' style="width:' + logiform.settings.width.value + '"' +
(item['placeholder'] ? ' placeholder="'+item['placeholder']+'"' : '') +
'>';
}
if (firstFieldValueMockup == '') {
firstFieldValueMockup = fieldValueMockup[item['id']];
}
}
}
var fieldContent =
'<select class="lf-field selectpicker" data-width="'+logiform.settings.width.field+'">' +
fieldItems +
'</select>';
// Create a mockup for condition
condition_mockup =
'<div class="lf-condition">' +
'<div class="btn-group">' +
'<button type="button" class="btn btn-warning lf-button-remove-condition">' +
logiform.settings.text['remove-condition'] +
'</button>' +
fieldContent +
comparisonOperatorContent +
'</div>' +
'<div class="lf-condition-value">' +
firstFieldValueMockup +
'</div>' +
'</div>';
// Create a mockup for condition group
condition_group_mockup =
'<div class="lf-condition-group">' +
logicalOperatorContent +
'<button type="button" class="btn btn-danger pull-right lf-button-remove-condition-group">' +
logiform.settings.text['remove-condition-group'] +
'</button>' +
'<div class="lf-condition-list">' +
'</div>' +
'<div class="lf-buttons btn-group">' +
'<button type="button" class="btn btn-primary lf-button-add-condition">' +
logiform.settings.text['add-condition'] +
'</button>' +
'<button type="button" class="btn btn-default lf-button-add-condition-group">' +
logiform.settings.text['add-condition-group'] +
'</button>' +
'</div>' +
'</div>';
// Create root
root = $(condition_group_mockup).attr('id', 'lf-root');
root.find('.lf-button-remove-condition-group').attr('disabled', 'disabled');
// Set up handlers
root.on('click', '.lf-button-add-condition', function() {
$(this).parents('.lf-condition-group:first').find('.lf-condition-list:first').append($(condition_mockup));
logiform.update();
});
root.on('click', '.lf-button-add-condition-group', function() {
$(this).parents('.lf-condition-group:first').find('.lf-condition-list:first').append($(condition_group_mockup));
logiform.update();
});
root.on('click', '.lf-button-remove-condition', function() {
$(this).parents('.lf-condition:first').remove();
logiform.update();
});
root.on('click', '.lf-button-remove-condition-group', function() {
var group = $(this).parents('.lf-condition-group:first');
// Do not remove root element
if (group.attr('id') == 'lf-root') return;
group.remove();
logiform.update();
});
root.on('change', '.lf-field', function() {
var fieldval = $(this).val();
$(this).parents('.lf-condition:first').find('.lf-condition-value:first').html(fieldValueMockup[fieldval]);
logiform.update();
});
root.on('change', '.lf-comparisonoperator, .lf-logicaloperator, .lf-value', function() {
logiform.update();
});
// Parse data if exists
if (logiform.settings.data) {
logiform.parse(logiform.settings.data, root);
}
// Hide source
if (logiform.settings.hideOriginal) {
$element.hide();
}
// Append to document
if (logiform.settings.target) {
logiform.settings.target.append(root);
} else {
$element.after(root);
}
}
logiform.parse = function(data) {
root.find('.lf-condition-list').empty();
logiform._traverse_parse(JSON.parse(data), root);
// Bake it!
logiform.bake();
}
logiform._traverse_parse = function(tree, node) {
// Traversing condition tree
for (var logicalOperator in tree) {
// Set logical operator
for (var l = 0, szl = logiform.settings.operators.logical.length; l < szl; l++) {
item = logiform.settings.operators.logical[l];
if (item == logicalOperator) {
node.find('.lf-logicaloperator').val(logicalOperator);
break;
}
}
// Add conditions
var conditions = node.find('.lf-condition-list');
for (var i = 0, sz = tree[logicalOperator].length; i < sz; i++) {
condition = tree[logicalOperator][i];
for (var field in condition) {
// Check whether field name is in schema,
for (var s = 0, szs = logiform.settings.schema.length; s < szs; s++) {
item = logiform.settings.schema[s];
if (item['id'] == field) {
// Create condition and append to list
var condition_node = $(condition_mockup);
condition_node.find('.lf-field').val(field);
condition_node.find('.lf-condition-value').html(fieldValueMockup[field]);
conditions.append(condition_node);
// Set value for it
for (var comparisonOperator in condition[field]) {
var value = condition[field][comparisonOperator];
condition_node.find('.lf-comparisonoperator').val(comparisonOperator);
condition_node.find('.lf-value').val(value);
}
// Break here, only one value per a statement.
break;
}
}
// ...or, this is a nested condition group.
for (var l = 0, szl = logiform.settings.operators.logical.length; l < szl; l++) {
item = logiform.settings.operators.logical[l];
if (item == field) {
// Create condition group and append to list
var condition_group_node = $(condition_group_mockup);
// Initiate condition group
logiform._traverse_parse(condition, condition_group_node);
conditions.append(condition_group_node);
}
}
// Break here, only one statement per a condition.
break;
}
}
// Break here, only one logical opeartor per a group.
break;
}
}
logiform.update = function(node) {
// Do we have an external update hook?
if (logiform.settings.onUpdate) {
logiform.settings.onUpdate();
}
// Do we need live update? Then bake into string per every update.
if (logiform.settings.liveUpdate) {
logiform.bake();
}
}
logiform.bake = function(node) {
// Use root node as default
if (!node)
node = root;
// Traversing condition tree
if (logiform.settings.prettify) {
$element.val(JSON.stringify(logiform._traverse_bake(node), null, 2));
} else {
$element.val(JSON.stringify(logiform._traverse_bake(node)));
}
}
logiform._traverse_bake = function(node) {
var form = {};
var logicalOperator = node.children('.lf-logicaloperator:first').val();
var conditions = [];
node.children('.lf-condition-list').children().each(function() {
var cond = $(this);
if (cond.hasClass('lf-condition-group')) {
conditions.push(logiform._traverse_bake(cond));
} else if (cond.hasClass('lf-condition')) {
var $field = cond.find('.lf-field');
var $comparisonOperator = cond.find('.lf-comparisonoperator');
var $value = cond.find('.lf-value');
var s;
if ($value.attr('multiple') == 'multiple') {
s = '{"' + $field.val() + '":' +
'{"' + $comparisonOperator.val() + '": ["' + ($value.val() || []).join('", "') + '"]}}';
} else {
s = '{"' + $field.val() + '":' +
'{"' + $comparisonOperator.val() + '":' +
($value.data('type') == 'number' ? ($value.val() || 'null') : '"' + $value.val() + '"') +
'}}';
}
conditions.push(JSON.parse(s));
}
});
form[logicalOperator] = conditions;
return form;
}
logiform.init();
}
$.fn.logiform = function(options) {
return this.each(function() {
if (undefined == $(this).data('logiform')) {
var logiform = new $.logiform(this, options);
$(this).data('logiform', logiform);
}
});
}
}(jQuery));