349 lines
12 KiB
JavaScript
349 lines
12 KiB
JavaScript
/**
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* @file
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* A Backbone Model for the state of an in-place editable field in the DOM.
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*/
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(function (_, Backbone, Drupal) {
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'use strict';
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Drupal.quickedit.FieldModel = Drupal.quickedit.BaseModel.extend(/** @lends Drupal.quickedit.FieldModel# */{
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/**
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* @type {object}
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*/
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defaults: /** @lends Drupal.quickedit.FieldModel# */{
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/**
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* The DOM element that represents this field. It may seem bizarre to have
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* a DOM element in a Backbone Model, but we need to be able to map fields
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* in the DOM to FieldModels in memory.
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*/
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el: null,
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/**
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* A field ID, of the form
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* `<entity type>/<id>/<field name>/<language>/<view mode>`
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*
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* @example
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* "node/1/field_tags/und/full"
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*/
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fieldID: null,
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/**
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* The unique ID of this field within its entity instance on the page, of
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* the form `<entity type>/<id>/<field name>/<language>/<view
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* mode>[entity instance ID]`.
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*
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* @example
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* "node/1/field_tags/und/full[0]"
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*/
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id: null,
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/**
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* A {@link Drupal.quickedit.EntityModel}. Its "fields" attribute, which
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* is a FieldCollection, is automatically updated to include this
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* FieldModel.
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*/
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entity: null,
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/**
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* This field's metadata as returned by the
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* QuickEditController::metadata().
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*/
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metadata: null,
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/**
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* Callback function for validating changes between states. Receives the
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* previous state, new state, context, and a callback.
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*/
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acceptStateChange: null,
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/**
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* A logical field ID, of the form
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* `<entity type>/<id>/<field name>/<language>`, i.e. the fieldID without
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* the view mode, to be able to identify other instances of the same
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* field on the page but rendered in a different view mode.
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*
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* @example
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* "node/1/field_tags/und".
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*/
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logicalFieldID: null,
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// The attributes below are stateful. The ones above will never change
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// during the life of a FieldModel instance.
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/**
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* In-place editing state of this field. Defaults to the initial state.
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* Possible values: {@link Drupal.quickedit.FieldModel.states}.
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*/
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state: 'inactive',
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/**
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* The field is currently in the 'changed' state or one of the following
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* states in which the field is still changed.
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*/
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isChanged: false,
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/**
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* Is tracked by the EntityModel, is mirrored here solely for decorative
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* purposes: so that FieldDecorationView.renderChanged() can react to it.
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*/
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inTempStore: false,
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/**
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* The full HTML representation of this field (with the element that has
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* the data-quickedit-field-id as the outer element). Used to propagate
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* changes from this field to other instances of the same field storage.
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*/
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html: null,
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/**
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* An object containing the full HTML representations (values) of other
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* view modes (keys) of this field, for other instances of this field
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* displayed in a different view mode.
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*/
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htmlForOtherViewModes: null
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},
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/**
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* State of an in-place editable field in the DOM.
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*
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* @constructs
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*
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* @augments Drupal.quickedit.BaseModel
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*
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* @param {object} options
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* Options for the field model.
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*/
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initialize: function (options) {
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// Store the original full HTML representation of this field.
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this.set('html', options.el.outerHTML);
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// Enlist field automatically in the associated entity's field collection.
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this.get('entity').get('fields').add(this);
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// Automatically generate the logical field ID.
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this.set('logicalFieldID', this.get('fieldID').split('/').slice(0, 4).join('/'));
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// Call Drupal.quickedit.BaseModel's initialize() method.
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Drupal.quickedit.BaseModel.prototype.initialize.call(this, options);
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},
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/**
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* Destroys the field model.
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*
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* @param {object} options
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* Options for the field model.
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*/
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destroy: function (options) {
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if (this.get('state') !== 'inactive') {
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throw new Error('FieldModel cannot be destroyed if it is not inactive state.');
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}
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Drupal.quickedit.BaseModel.prototype.destroy.call(this, options);
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},
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/**
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* @inheritdoc
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*/
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sync: function () {
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// We don't use REST updates to sync.
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return;
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},
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/**
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* Validate function for the field model.
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*
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* @param {object} attrs
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* The attributes changes in the save or set call.
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* @param {object} options
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* An object with the following option:
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* @param {string} [options.reason]
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* A string that conveys a particular reason to allow for an exceptional
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* state change.
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* @param {Array} options.accept-field-states
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* An array of strings that represent field states that the entities must
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* be in to validate. For example, if `accept-field-states` is
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* `['candidate', 'highlighted']`, then all the fields of the entity must
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* be in either of these two states for the save or set call to
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* validate and proceed.
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*
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* @return {string}
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* A string to say something about the state of the field model.
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*/
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validate: function (attrs, options) {
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var current = this.get('state');
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var next = attrs.state;
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if (current !== next) {
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// Ensure it's a valid state.
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if (_.indexOf(this.constructor.states, next) === -1) {
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return '"' + next + '" is an invalid state';
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}
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// Check if the acceptStateChange callback accepts it.
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if (!this.get('acceptStateChange')(current, next, options, this)) {
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return 'state change not accepted';
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}
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}
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},
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/**
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* Extracts the entity ID from this field's ID.
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*
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* @return {string}
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* An entity ID: a string of the format `<entity type>/<id>`.
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*/
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getEntityID: function () {
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return this.get('fieldID').split('/').slice(0, 2).join('/');
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},
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/**
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* Extracts the view mode ID from this field's ID.
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*
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* @return {string}
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* A view mode ID.
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*/
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getViewMode: function () {
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return this.get('fieldID').split('/').pop();
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},
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/**
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* Find other instances of this field with different view modes.
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*
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* @return {Array}
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* An array containing view mode IDs.
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*/
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findOtherViewModes: function () {
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var currentField = this;
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var otherViewModes = [];
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Drupal.quickedit.collections.fields
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// Find all instances of fields that display the same logical field
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// (same entity, same field, just a different instance and maybe a
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// different view mode).
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.where({logicalFieldID: currentField.get('logicalFieldID')})
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.forEach(function (field) {
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// Ignore the current field.
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if (field === currentField) {
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return;
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}
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// Also ignore other fields with the same view mode.
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else if (field.get('fieldID') === currentField.get('fieldID')) {
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return;
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}
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else {
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otherViewModes.push(field.getViewMode());
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}
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});
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return otherViewModes;
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}
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}, /** @lends Drupal.quickedit.FieldModel */{
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/**
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* Sequence of all possible states a field can be in during quickediting.
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*
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* @type {Array.<string>}
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*/
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states: [
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// The field associated with this FieldModel is linked to an EntityModel;
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// the user can choose to start in-place editing that entity (and
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// consequently this field). No in-place editor (EditorView) is associated
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// with this field, because this field is not being in-place edited.
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// This is both the initial (not yet in-place editing) and the end state
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// (finished in-place editing).
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'inactive',
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// The user is in-place editing this entity, and this field is a
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// candidate
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// for in-place editing. In-place editor should not
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// - Trigger: user.
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// - Guarantees: entity is ready, in-place editor (EditorView) is
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// associated with the field.
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// - Expected behavior: visual indicators
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// around the field indicate it is available for in-place editing, no
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// in-place editor presented yet.
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'candidate',
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// User is highlighting this field.
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// - Trigger: user.
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// - Guarantees: see 'candidate'.
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// - Expected behavior: visual indicators to convey highlighting, in-place
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// editing toolbar shows field's label.
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'highlighted',
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// User has activated the in-place editing of this field; in-place editor
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// is activating.
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// - Trigger: user.
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// - Guarantees: see 'candidate'.
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// - Expected behavior: loading indicator, in-place editor is loading
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// remote data (e.g. retrieve form from back-end). Upon retrieval of
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// remote data, the in-place editor transitions the field's state to
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// 'active'.
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'activating',
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// In-place editor has finished loading remote data; ready for use.
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// - Trigger: in-place editor.
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// - Guarantees: see 'candidate'.
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// - Expected behavior: in-place editor for the field is ready for use.
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'active',
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// User has modified values in the in-place editor.
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// - Trigger: user.
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// - Guarantees: see 'candidate', plus in-place editor is ready for use.
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// - Expected behavior: visual indicator of change.
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'changed',
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// User is saving changed field data in in-place editor to
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// PrivateTempStore. The save mechanism of the in-place editor is called.
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// - Trigger: user.
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// - Guarantees: see 'candidate' and 'active'.
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// - Expected behavior: saving indicator, in-place editor is saving field
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// data into PrivateTempStore. Upon successful saving (without
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// validation errors), the in-place editor transitions the field's state
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// to 'saved', but to 'invalid' upon failed saving (with validation
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// errors).
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'saving',
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// In-place editor has successfully saved the changed field.
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// - Trigger: in-place editor.
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// - Guarantees: see 'candidate' and 'active'.
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// - Expected behavior: transition back to 'candidate' state because the
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// deed is done. Then: 1) transition to 'inactive' to allow the field
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// to be rerendered, 2) destroy the FieldModel (which also destroys
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// attached views like the EditorView), 3) replace the existing field
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// HTML with the existing HTML and 4) attach behaviors again so that the
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// field becomes available again for in-place editing.
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'saved',
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// In-place editor has failed to saved the changed field: there were
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// validation errors.
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// - Trigger: in-place editor.
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// - Guarantees: see 'candidate' and 'active'.
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// - Expected behavior: remain in 'invalid' state, let the user make more
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// changes so that he can save it again, without validation errors.
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'invalid'
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],
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/**
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* Indicates whether the 'from' state comes before the 'to' state.
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*
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* @param {string} from
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* One of {@link Drupal.quickedit.FieldModel.states}.
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* @param {string} to
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* One of {@link Drupal.quickedit.FieldModel.states}.
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*
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* @return {bool}
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* Whether the 'from' state comes before the 'to' state.
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*/
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followsStateSequence: function (from, to) {
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return _.indexOf(this.states, from) < _.indexOf(this.states, to);
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}
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});
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/**
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* @constructor
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*
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* @augments Backbone.Collection
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*/
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Drupal.quickedit.FieldCollection = Backbone.Collection.extend(/** @lends Drupal.quickedit.FieldCollection */{
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/**
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* @type {Drupal.quickedit.FieldModel}
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*/
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model: Drupal.quickedit.FieldModel
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});
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}(_, Backbone, Drupal));
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