'use strict';
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var assign = require('lodash/assign'),
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find = require('lodash/find');
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var domQuery = require('min-dom').query;
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var escapeHTML = require('../Utils').escapeHTML;
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var selectEntryFactory = require('./SelectEntryFactory'),
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entryFieldDescription = require('./EntryFieldDescription');
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/**
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* The combo box is a special implementation of the select entry and adds the option 'custom' to the
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* select box. If 'custom' is selected, an additional text input field is shown which allows to define
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* a custom value.
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*
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* @param {Object} options
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* @param {string} options.id
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* @param {string} options.label
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* @param {Array<Object>} options.selectOptions list of name/value pairs
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* @param {string} options.modelProperty
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* @param {function} options.get
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* @param {function} options.set
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* @param {string} [options.customValue] custom select option value (default: 'custom')
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* @param {string} [options.customName] custom select option name visible in the select box (default: 'custom')
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*
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* @return {Object}
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*/
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var comboBox = function(options) {
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var selectOptions = options.selectOptions,
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modelProperty = options.modelProperty,
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customValue = options.customValue || 'custom',
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customName = options.customName || 'custom ' + modelProperty,
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description = options.description;
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// check if a value is not a built in value
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var isCustomValue = function(value) {
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if (typeof value[modelProperty] === 'undefined') {
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return false;
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}
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var isCustom = !find(selectOptions, function(option) {
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return value[modelProperty] === option.value;
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});
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return isCustom;
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};
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var comboOptions = assign({}, options);
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// true if the selected value in the select box is customValue
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comboOptions.showCustomInput = function(element, node) {
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var selectBox = domQuery('[data-entry="'+ options.id +'"] select', node.parentNode);
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if (selectBox) {
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return selectBox.value === customValue;
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}
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return false;
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};
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comboOptions.get = function(element, node) {
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var value = options.get(element, node);
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var modifiedValues = {};
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if (!isCustomValue(value)) {
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modifiedValues[modelProperty] = value[modelProperty] || '';
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return modifiedValues;
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}
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modifiedValues[modelProperty] = customValue;
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modifiedValues['custom-'+modelProperty] = value[modelProperty];
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return modifiedValues;
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};
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comboOptions.set = function(element, values, node) {
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var modifiedValues = {};
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// if the custom select option has been selected
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// take the value from the text input field
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if (values[modelProperty] === customValue) {
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modifiedValues[modelProperty] = values['custom-' + modelProperty] || '';
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}
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else if (options.emptyParameter && values[modelProperty] === '') {
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modifiedValues[modelProperty] = undefined;
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} else {
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modifiedValues[modelProperty] = values[modelProperty];
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}
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return options.set(element, modifiedValues, node);
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};
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comboOptions.selectOptions.push({ name: customName, value: customValue });
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var comboBoxEntry = assign({}, selectEntryFactory(comboOptions, comboOptions));
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comboBoxEntry.html += '<div class="bpp-field-wrapper bpp-combo-input" ' +
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'data-show="showCustomInput"' +
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'>' +
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'<input id="activiti-' + escapeHTML(options.id) + '-input" type="text" name="custom-' +
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escapeHTML(modelProperty) + '" ' +
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' />' +
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'</div>';
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// add description below combo box entry field
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if (description) {
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comboBoxEntry.html += entryFieldDescription(description);
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}
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return comboBoxEntry;
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};
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module.exports = comboBox;
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