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142 lines (130 loc) · 4.04 KB
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import $ from 'jquery';
var CodeMirror = require('codemirror');
/**
* "Factory" function to transform a container into an interface for
* editing lists of JSON values.
*
* @param {string} container - jQuery selector for the container
* @param {Object} options
* @param {string} options.json_textarea
* @param {string} options.add_button
* @param {string} options.remove_button
* @param {string} options.value_space
* @param {string} options.template
* @param {string} options.form_container
* @param {string} options.wrapper
* @param {Object} options.model
*/
module.exports = function(container, options) {
container = $(container);
var jsonEditor = CodeMirror.fromTextArea(
container.find(options.json_textarea).get(0),
{
mode: 'javascript',
viewportMargin: Infinity,
matchBrackets: true
}
);
// Create spaces for each element in the original JSON
var jsonContent = jsonEditor.getValue();
if (jsonContent.length > 0) {
var valuesToUpdate = JSON.parse(jsonEditor.getValue());
$.each(valuesToUpdate, function(index, value) {
updateTemplate(value, $createNewSpace());
});
}
/**
* For each key in the given model, set the <input> with a matching class name to the key's value.
* @param {model} The model to use when updating the DOM.
* @param {$template} The jQuery element to search for <input> elements.
*/
function updateTemplate(model, $template) {
$.each(model, function(key, value) {
if (value && typeof value === 'object') {
updateTemplate(value, $template);
} else {
var item = $template.find('.' + key);
if (item.prop('type') === 'checkbox') {
item.prop('checked', model[key]);
} else {
item.val(model[key]);
}
}
});
if (options.onNewSpace) {
options.onNewSpace($template);
}
}
/**
* For each key in the given model, set the key's value to the value of the <input> with a matching class name.
* @param {model} The model to update from the DOM.
* @param {$template} The jQuery element to search for <input> elements.
*/
function updateModel(model, $template) {
$.each(model, function(key, value) {
if (typeof value === 'object') {
updateModel(value, $template);
} else {
var item = $template.find('.' + key);
if (item.prop('type') === 'checkbox') {
value = item.prop('checked');
} else {
value = item.val();
}
model[key] = typeof model[key] === 'number' ? +value : value;
}
});
}
function updateJSON() {
var updatedValues = [];
container
.find(options.form_container)
.find(options.value_space)
.each(function() {
var model = $.extend(true, {}, options.model);
updateModel(model, $(this));
updatedValues.push(model);
});
jsonEditor.setValue(JSON.stringify(updatedValues, null, ' '));
}
function $createNewSpace() {
var $newValue = container
.find(options.template)
.children(':first')
.clone();
container.find(options.form_container).append($newValue);
return $newValue;
}
if (options.up_button) {
container.on('click', options.up_button, function() {
var wrapper = $(this).closest(options.value_space);
if (wrapper.prev().length) {
wrapper.insertBefore(wrapper.prev());
updateJSON();
}
});
}
if (options.down_button) {
container.on('click', options.down_button, function() {
var wrapper = $(this).closest(options.value_space);
if (wrapper.next().length) {
wrapper.insertAfter(wrapper.next());
updateJSON();
}
});
}
container.on('click', options.add_button, function() {
var model = $.extend(true, {}, options.model);
updateTemplate(model, $createNewSpace());
updateJSON();
});
container.on('click', options.remove_button, function() {
$(this)
.closest(options.value_space)
.remove();
updateJSON();
});
container.on('change', options.wrapper, function() {
updateJSON();
});
};