/* global define */
define([
"underscore",
"jquery",
"backbone",
"models/DataONEObject",
"models/metadata/eml211/EMLAttribute",
"models/metadata/eml211/EMLMeasurementScale",
"views/metadata/EMLMeasurementScaleView",
"views/metadata/EML211MissingValueCodesView",
"text!templates/metadata/eml-attribute.html",
], function (
_,
$,
Backbone,
DataONEObject,
EMLAttribute,
EMLMeasurementScale,
EMLMeasurementScaleView,
EML211MissingValueCodesView,
EMLAttributeTemplate
) {
/**
* @class EMLAttributeView
* @classdesc An EMLAttributeView displays the info about one attribute in a
* data object
* @classcategory Views/Metadata
* @screenshot views/metadata/EMLAttributeView.png
* @extends Backbone.View
*/
var EMLAttributeView = Backbone.View.extend(
/** @lends EMLAttributeView.prototype */ {
tagName: "div",
/**
* The className to add to the view container
* @type {string}
*/
className: "eml-attribute",
/**
* The HTML template for an attribute
* @type {Underscore.template}
*/
template: _.template(EMLAttributeTemplate),
/**
* The events this view will listen to and the associated function to
* call.
* @type {Object}
*/
events: {
"change .input": "updateModel",
focusout: "showValidation",
"keyup .error": "hideValidation",
"click .radio": "hideValidation",
},
/**
* Creates a new EMLAttributeView
* @param {Object} options - A literal object with options to pass to the
* view
* @param {EMLAttribute} [options.model] - The EMLAttribute model to
* display. If none is provided, an empty EMLAttribute will be created.
* @param {boolean} [options.isNew=false] - Set to true if this is a new
* attribute
*/
initialize: function (options) {
if (!options || typeof options != "object") options = {};
this.isNew =
options.isNew == true ? true : options.model ? false : true;
this.model =
options.model ||
new EMLAttribute({ xmlID: DataONEObject.generateId() });
},
/**
* Renders this view
* @return {EMLAttributeView} A reference to this view
*/
render: function () {
var templateInfo = {
title: this.model.get("attributeName")
? this.model.get("attributeName")
: "Add New Attribute",
};
_.extend(templateInfo, this.model.toJSON());
// Render the template
var viewHTML = this.template(templateInfo);
// Insert the template HTML
this.$el.html(viewHTML);
var measurementScaleModel = this.model.get("measurementScale");
if (!this.model.get("measurementScale")) {
// Create a new EMLMeasurementScale model if this is a new attribute
measurementScaleModel = EMLMeasurementScale.getInstance();
}
// Save a reference to this EMLAttribute model
measurementScaleModel.set("parentModel", this.model);
// Create an EMLMeasurementScaleView for this attribute's measurement
// scale
var measurementScaleView = new EMLMeasurementScaleView({
model: measurementScaleModel,
parentView: this,
});
// Render the EMLMeasurementScaleView and insert it into this view
measurementScaleView.render();
this.$(".measurement-scale-container").append(measurementScaleView.el);
this.measurementScaleView = measurementScaleView;
// Create and insert a missing values view
const MissingValueCodesView = new EML211MissingValueCodesView({
collection: this.model.get("missingValueCodes"),
});
MissingValueCodesView.render();
this.$(".missing-values-container").append(MissingValueCodesView.el);
this.MissingValueCodesView = MissingValueCodesView;
// Mark this view DOM as new if it is a new attribute
if (this.isNew) {
this.$el.addClass("new");
}
// Save a reference to this model's id in the DOM
this.$el.attr("data-attribute-id", this.model.cid);
},
/**
* After this view has been rendered, add the MeasurementTypeView and
* render the MeasurementScaleView
*/
postRender: function () {
this.measurementScaleView.postRender();
this.renderMeasurementTypeView();
},
/**
* Render and insert the MeasurementTypeView for this view.
*
* This is separated out into its own method so it can be called from
* `postRender()` which is called after the user switches to the
* EntityView tab for this attribute. We do this to avoid loading as many
* MeasurementTypeViews as there are Attributes which would get us rate
* limited by BioPortal because every MeasurementTypeView hits BioPortal's
* API on render.
*/
renderMeasurementTypeView: function () {
if (
!(
MetacatUI.appModel.get("enableMeasurementTypeView") &&
MetacatUI.appModel.get("bioportalAPIKey")
)
) {
return;
}
var viewRef = this,
containerEl = viewRef.$(".measurement-type-container");
// Only insert a new view if we haven't already
if (!containerEl.is(":empty")) {
return;
}
// Dynamically require since this view is feature-flagged off by default
// and requires an API key
require(["views/metadata/EMLMeasurementTypeView"], function (
EMLMeasurementTypeView
) {
var view = new EMLMeasurementTypeView({
model: viewRef.model,
});
view.render();
containerEl.html(view.el);
});
},
/**
* Updates the model with the new value from the DOM element that was
* changed.
* @param {Event} e - The event that was triggered by the user
*/
updateModel: function (e) {
if (!e) return;
var emlModel = this.model.get("parentModel"),
tries = 0;
while (emlModel.type !== "EML" && tries < 6) {
emlModel = emlModel.get("parentModel");
tries++;
}
var newValue = emlModel
? emlModel.cleanXMLText($(e.target).val())
: $(e.target).val(),
category = $(e.target).attr("data-category"),
currentValue = this.model.get(category);
// If the new value is just a string of space characters, then set it to
// an empty string
if (typeof newValue == "string" && !newValue.trim().length) {
newValue = "";
}
// If the current value is an array...
if (Array.isArray(currentValue)) {
// Get the position of the updated DOM element
var index = this.$(".input[data-category='" + category + "']").index(
e.target
);
// If there is at least one value already in the array...
if (currentValue.length > 0) {
// If the new value is a falsey value, then don't' set it on the
// model
if (
typeof newValue == "undefined" ||
newValue === false ||
newValue === null
) {
// Remove one element at this index instead of inserting an empty
// value
var newArray = currentValue.splice(index, 1);
// Set the new array on the model
this.model.set(category, newArray);
}
// Otherwise, insert the value in the array at the calculated index
else {
currentValue[index] = newValue;
}
}
// Otherwise if it's an empty array AND there is a value to set...
else if (
typeof newValue != "undefined" &&
newValue !== false &&
newValue !== null
) {
// Push the new value into this array
currentValue.push(newValue);
}
// Trigger a change on this model attribute
this.model.trigger("change:" + category);
}
// If the value is not an array...
else {
// Check that there is an actual value here
if (
typeof newValue != "undefined" &&
newValue !== false &&
newValue !== null
) {
this.model.set(category, newValue);
}
}
},
/**
* Shows validation errors on this view
*/
showValidation: function () {
var view = this;
setTimeout(function () {
// If the user focused on another element in this view, don't do
// anything
if (_.contains($(document.activeElement).parents(), view.el)) return;
// Reset the error messages and styling
view.$el.removeClass("error");
view.$(".error").removeClass("error");
view.$(".notification").text("");
if (!view.model.isValid()) {
var errors = view.model.validationError;
_.each(
Object.keys(errors),
function (attr) {
view
.$(".input[data-category='" + attr + "']")
.addClass("error");
view
.$(".radio [data-category='" + attr + "']")
.addClass("error");
view
.$("[data-category='" + attr + "'] .notification")
.text(errors[attr])
.addClass("error");
},
view
);
view.$el.addClass("error");
}
// If the measurement scale model is not valid
if (
view.model.get("measurementScale") &&
!view.model.get("measurementScale").isValid()
) {
view.measurementScaleView.showValidation();
}
}, 200);
},
/**
* Hides validation errors on this view
* @param {Event} e - The event that was triggered by the user
*/
hideValidation: function (e) {
var input = $(e.target),
category = input.attr("data-category");
input.removeClass("error");
this.$("[data-category='" + category + "'] .notification")
.removeClass("error")
.empty();
},
}
);
return EMLAttributeView;
});