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- /**
- * @file
- * A Backbone Model for the state of an in-place editable entity in the DOM.
- */
- (function(_, $, Backbone, Drupal) {
- Drupal.quickedit.EntityModel = Drupal.quickedit.BaseModel.extend(
- /** @lends Drupal.quickedit.EntityModel# */ {
- /**
- * @type {object}
- */
- defaults: /** @lends Drupal.quickedit.EntityModel# */ {
- /**
- * The DOM element that represents this entity.
- *
- * It may seem bizarre to have a DOM element in a Backbone Model, but we
- * need to be able to map entities in the DOM to EntityModels in memory.
- *
- * @type {HTMLElement}
- */
- el: null,
- /**
- * An entity ID, of the form `<entity type>/<entity ID>`
- *
- * @example
- * "node/1"
- *
- * @type {string}
- */
- entityID: null,
- /**
- * An entity instance ID.
- *
- * The first instance of a specific entity (i.e. with a given entity ID)
- * is assigned 0, the second 1, and so on.
- *
- * @type {number}
- */
- entityInstanceID: null,
- /**
- * The unique ID of this entity instance on the page, of the form
- * `<entity type>/<entity ID>[entity instance ID]`
- *
- * @example
- * "node/1[0]"
- *
- * @type {string}
- */
- id: null,
- /**
- * The label of the entity.
- *
- * @type {string}
- */
- label: null,
- /**
- * A FieldCollection for all fields of the entity.
- *
- * @type {Drupal.quickedit.FieldCollection}
- *
- * @see Drupal.quickedit.FieldCollection
- */
- fields: null,
- // The attributes below are stateful. The ones above will never change
- // during the life of a EntityModel instance.
- /**
- * Indicates whether this entity is currently being edited in-place.
- *
- * @type {bool}
- */
- isActive: false,
- /**
- * Whether one or more fields are already been stored in PrivateTempStore.
- *
- * @type {bool}
- */
- inTempStore: false,
- /**
- * Indicates whether a "Save" button is necessary or not.
- *
- * Whether one or more fields have already been stored in PrivateTempStore
- * *or* the field that's currently being edited is in the 'changed' or a
- * later state.
- *
- * @type {bool}
- */
- isDirty: false,
- /**
- * Whether the request to the server has been made to commit this entity.
- *
- * Used to prevent multiple such requests.
- *
- * @type {bool}
- */
- isCommitting: false,
- /**
- * The current processing state of an entity.
- *
- * @type {string}
- */
- state: 'closed',
- /**
- * IDs of fields whose new values have been stored in PrivateTempStore.
- *
- * We must store this on the EntityModel as well (even though it already
- * is on the FieldModel) because when a field is rerendered, its
- * FieldModel is destroyed and this allows us to transition it back to
- * the proper state.
- *
- * @type {Array.<string>}
- */
- fieldsInTempStore: [],
- /**
- * A flag the tells the application that this EntityModel must be reloaded
- * in order to restore the original values to its fields in the client.
- *
- * @type {bool}
- */
- reload: false,
- },
- /**
- * @constructs
- *
- * @augments Drupal.quickedit.BaseModel
- */
- initialize() {
- this.set('fields', new Drupal.quickedit.FieldCollection());
- // Respond to entity state changes.
- this.listenTo(this, 'change:state', this.stateChange);
- // The state of the entity is largely dependent on the state of its
- // fields.
- this.listenTo(
- this.get('fields'),
- 'change:state',
- this.fieldStateChange,
- );
- // Call Drupal.quickedit.BaseModel's initialize() method.
- Drupal.quickedit.BaseModel.prototype.initialize.call(this);
- },
- /**
- * Updates FieldModels' states when an EntityModel change occurs.
- *
- * @param {Drupal.quickedit.EntityModel} entityModel
- * The entity model
- * @param {string} state
- * The state of the associated entity. One of
- * {@link Drupal.quickedit.EntityModel.states}.
- * @param {object} options
- * Options for the entity model.
- */
- stateChange(entityModel, state, options) {
- const to = state;
- switch (to) {
- case 'closed':
- this.set({
- isActive: false,
- inTempStore: false,
- isDirty: false,
- });
- break;
- case 'launching':
- break;
- case 'opening':
- // Set the fields to candidate state.
- entityModel.get('fields').each(fieldModel => {
- fieldModel.set('state', 'candidate', options);
- });
- break;
- case 'opened':
- // The entity is now ready for editing!
- this.set('isActive', true);
- break;
- case 'committing': {
- // The user indicated they want to save the entity.
- const fields = this.get('fields');
- // For fields that are in an active state, transition them to
- // candidate.
- fields
- .chain()
- .filter(
- fieldModel =>
- _.intersection([fieldModel.get('state')], ['active']).length,
- )
- .each(fieldModel => {
- fieldModel.set('state', 'candidate');
- });
- // For fields that are in a changed state, field values must first be
- // stored in PrivateTempStore.
- fields
- .chain()
- .filter(
- fieldModel =>
- _.intersection(
- [fieldModel.get('state')],
- Drupal.quickedit.app.changedFieldStates,
- ).length,
- )
- .each(fieldModel => {
- fieldModel.set('state', 'saving');
- });
- break;
- }
- case 'deactivating': {
- const changedFields = this.get('fields').filter(
- fieldModel =>
- _.intersection(
- [fieldModel.get('state')],
- ['changed', 'invalid'],
- ).length,
- );
- // If the entity contains unconfirmed or unsaved changes, return the
- // entity to an opened state and ask the user if they would like to
- // save the changes or discard the changes.
- // 1. One of the fields is in a changed state. The changed field
- // might just be a change in the client or it might have been saved
- // to tempstore.
- // 2. The saved flag is empty and the confirmed flag is empty. If
- // the entity has been saved to the server, the fields changed in
- // the client are irrelevant. If the changes are confirmed, then
- // proceed to set the fields to candidate state.
- if (
- (changedFields.length || this.get('fieldsInTempStore').length) &&
- !options.saved &&
- !options.confirmed
- ) {
- // Cancel deactivation until the user confirms save or discard.
- this.set('state', 'opened', { confirming: true });
- // An action in reaction to state change must be deferred.
- _.defer(() => {
- Drupal.quickedit.app.confirmEntityDeactivation(entityModel);
- });
- } else {
- const invalidFields = this.get('fields').filter(
- fieldModel =>
- _.intersection([fieldModel.get('state')], ['invalid']).length,
- );
- // Indicate if this EntityModel needs to be reloaded in order to
- // restore the original values of its fields.
- entityModel.set(
- 'reload',
- this.get('fieldsInTempStore').length || invalidFields.length,
- );
- // Set all fields to the 'candidate' state. A changed field may have
- // to go through confirmation first.
- entityModel.get('fields').each(fieldModel => {
- // If the field is already in the candidate state, trigger a
- // change event so that the entityModel can move to the next state
- // in deactivation.
- if (
- _.intersection(
- [fieldModel.get('state')],
- ['candidate', 'highlighted'],
- ).length
- ) {
- fieldModel.trigger(
- 'change:state',
- fieldModel,
- fieldModel.get('state'),
- options,
- );
- } else {
- fieldModel.set('state', 'candidate', options);
- }
- });
- }
- break;
- }
- case 'closing':
- // Set all fields to the 'inactive' state.
- options.reason = 'stop';
- this.get('fields').each(fieldModel => {
- fieldModel.set(
- {
- inTempStore: false,
- state: 'inactive',
- },
- options,
- );
- });
- break;
- }
- },
- /**
- * Updates a Field and Entity model's "inTempStore" when appropriate.
- *
- * Helper function.
- *
- * @param {Drupal.quickedit.EntityModel} entityModel
- * The model of the entity for which a field's state attribute has
- * changed.
- * @param {Drupal.quickedit.FieldModel} fieldModel
- * The model of the field whose state attribute has changed.
- *
- * @see Drupal.quickedit.EntityModel#fieldStateChange
- */
- _updateInTempStoreAttributes(entityModel, fieldModel) {
- const current = fieldModel.get('state');
- const previous = fieldModel.previous('state');
- let fieldsInTempStore = entityModel.get('fieldsInTempStore');
- // If the fieldModel changed to the 'saved' state: remember that this
- // field was saved to PrivateTempStore.
- if (current === 'saved') {
- // Mark the entity as saved in PrivateTempStore, so that we can pass the
- // proper "reset PrivateTempStore" boolean value when communicating with
- // the server.
- entityModel.set('inTempStore', true);
- // Mark the field as saved in PrivateTempStore, so that visual
- // indicators signifying just that may be rendered.
- fieldModel.set('inTempStore', true);
- // Remember that this field is in PrivateTempStore, restore when
- // rerendered.
- fieldsInTempStore.push(fieldModel.get('fieldID'));
- fieldsInTempStore = _.uniq(fieldsInTempStore);
- entityModel.set('fieldsInTempStore', fieldsInTempStore);
- }
- // If the fieldModel changed to the 'candidate' state from the
- // 'inactive' state, then this is a field for this entity that got
- // rerendered. Restore its previous 'inTempStore' attribute value.
- else if (current === 'candidate' && previous === 'inactive') {
- fieldModel.set(
- 'inTempStore',
- _.intersection([fieldModel.get('fieldID')], fieldsInTempStore)
- .length > 0,
- );
- }
- },
- /**
- * Reacts to state changes in this entity's fields.
- *
- * @param {Drupal.quickedit.FieldModel} fieldModel
- * The model of the field whose state attribute changed.
- * @param {string} state
- * The state of the associated field. One of
- * {@link Drupal.quickedit.FieldModel.states}.
- */
- fieldStateChange(fieldModel, state) {
- const entityModel = this;
- const fieldState = state;
- // Switch on the entityModel state.
- // The EntityModel responds to FieldModel state changes as a function of
- // its state. For example, a field switching back to 'candidate' state
- // when its entity is in the 'opened' state has no effect on the entity.
- // But that same switch back to 'candidate' state of a field when the
- // entity is in the 'committing' state might allow the entity to proceed
- // with the commit flow.
- switch (this.get('state')) {
- case 'closed':
- case 'launching':
- // It should be impossible to reach these: fields can't change state
- // while the entity is closed or still launching.
- break;
- case 'opening':
- // We must change the entity to the 'opened' state, but it must first
- // be confirmed that all of its fieldModels have transitioned to the
- // 'candidate' state.
- // We do this here, because this is called every time a fieldModel
- // changes state, hence each time this is called, we get closer to the
- // goal of having all fieldModels in the 'candidate' state.
- // A state change in reaction to another state change must be
- // deferred.
- _.defer(() => {
- entityModel.set('state', 'opened', {
- 'accept-field-states': Drupal.quickedit.app.readyFieldStates,
- });
- });
- break;
- case 'opened':
- // Set the isDirty attribute when appropriate so that it is known when
- // to display the "Save" button in the entity toolbar.
- // Note that once a field has been changed, there's no way to discard
- // that change, hence it will have to be saved into PrivateTempStore,
- // or the in-place editing of this field will have to be stopped
- // completely. In other words: once any field enters the 'changed'
- // field, then for the remainder of the in-place editing session, the
- // entity is by definition dirty.
- if (fieldState === 'changed') {
- entityModel.set('isDirty', true);
- } else {
- this._updateInTempStoreAttributes(entityModel, fieldModel);
- }
- break;
- case 'committing': {
- // If the field save returned a validation error, set the state of the
- // entity back to 'opened'.
- if (fieldState === 'invalid') {
- // A state change in reaction to another state change must be
- // deferred.
- _.defer(() => {
- entityModel.set('state', 'opened', { reason: 'invalid' });
- });
- } else {
- this._updateInTempStoreAttributes(entityModel, fieldModel);
- }
- // Attempt to save the entity. If the entity's fields are not yet all
- // in a ready state, the save will not be processed.
- const options = {
- 'accept-field-states': Drupal.quickedit.app.readyFieldStates,
- };
- if (entityModel.set('isCommitting', true, options)) {
- entityModel.save({
- success() {
- entityModel.set(
- {
- state: 'deactivating',
- isCommitting: false,
- },
- { saved: true },
- );
- },
- error() {
- // Reset the "isCommitting" mutex.
- entityModel.set('isCommitting', false);
- // Change the state back to "opened", to allow the user to hit
- // the "Save" button again.
- entityModel.set('state', 'opened', {
- reason: 'networkerror',
- });
- // Show a modal to inform the user of the network error.
- const message = Drupal.t(
- 'Your changes to <q>@entity-title</q> could not be saved, either due to a website problem or a network connection problem.<br>Please try again.',
- { '@entity-title': entityModel.get('label') },
- );
- Drupal.quickedit.util.networkErrorModal(
- Drupal.t('Network problem!'),
- message,
- );
- },
- });
- }
- break;
- }
- case 'deactivating':
- // When setting the entity to 'closing', require that all fieldModels
- // are in either the 'candidate' or 'highlighted' state.
- // A state change in reaction to another state change must be
- // deferred.
- _.defer(() => {
- entityModel.set('state', 'closing', {
- 'accept-field-states': Drupal.quickedit.app.readyFieldStates,
- });
- });
- break;
- case 'closing':
- // When setting the entity to 'closed', require that all fieldModels
- // are in the 'inactive' state.
- // A state change in reaction to another state change must be
- // deferred.
- _.defer(() => {
- entityModel.set('state', 'closed', {
- 'accept-field-states': ['inactive'],
- });
- });
- break;
- }
- },
- /**
- * Fires an AJAX request to the REST save URL for an entity.
- *
- * @param {object} options
- * An object of options that contains:
- * @param {function} [options.success]
- * A function to invoke if the entity is successfully saved.
- */
- save(options) {
- const entityModel = this;
- // Create a Drupal.ajax instance to save the entity.
- const entitySaverAjax = Drupal.ajax({
- url: Drupal.url(`quickedit/entity/${entityModel.get('entityID')}`),
- error() {
- // Let the Drupal.quickedit.EntityModel Backbone model's error()
- // method handle errors.
- options.error.call(entityModel);
- },
- });
- // Entity saved successfully.
- entitySaverAjax.commands.quickeditEntitySaved = function(
- ajax,
- response,
- status,
- ) {
- // All fields have been moved from PrivateTempStore to permanent
- // storage, update the "inTempStore" attribute on FieldModels, on the
- // EntityModel and clear EntityModel's "fieldInTempStore" attribute.
- entityModel.get('fields').each(fieldModel => {
- fieldModel.set('inTempStore', false);
- });
- entityModel.set('inTempStore', false);
- entityModel.set('fieldsInTempStore', []);
- // Invoke the optional success callback.
- if (options.success) {
- options.success.call(entityModel);
- }
- };
- // Trigger the AJAX request, which will will return the
- // quickeditEntitySaved AJAX command to which we then react.
- entitySaverAjax.execute();
- },
- /**
- * Validate the entity model.
- *
- * @param {object} attrs
- * The attributes changes in the save or set call.
- * @param {object} options
- * An object with the following option:
- * @param {string} [options.reason]
- * A string that conveys a particular reason to allow for an exceptional
- * state change.
- * @param {Array} options.accept-field-states
- * An array of strings that represent field states that the entities must
- * be in to validate. For example, if `accept-field-states` is
- * `['candidate', 'highlighted']`, then all the fields of the entity must
- * be in either of these two states for the save or set call to
- * validate and proceed.
- *
- * @return {string}
- * A string to say something about the state of the entity model.
- */
- validate(attrs, options) {
- const acceptedFieldStates = options['accept-field-states'] || [];
- // Validate state change.
- const currentState = this.get('state');
- const nextState = attrs.state;
- if (currentState !== nextState) {
- // Ensure it's a valid state.
- if (_.indexOf(this.constructor.states, nextState) === -1) {
- return `"${nextState}" is an invalid state`;
- }
- // Ensure it's a state change that is allowed.
- // Check if the acceptStateChange function accepts it.
- if (!this._acceptStateChange(currentState, nextState, options)) {
- return 'state change not accepted';
- }
- // If that function accepts it, then ensure all fields are also in an
- // acceptable state.
- if (!this._fieldsHaveAcceptableStates(acceptedFieldStates)) {
- return 'state change not accepted because fields are not in acceptable state';
- }
- }
- // Validate setting isCommitting = true.
- const currentIsCommitting = this.get('isCommitting');
- const nextIsCommitting = attrs.isCommitting;
- if (currentIsCommitting === false && nextIsCommitting === true) {
- if (!this._fieldsHaveAcceptableStates(acceptedFieldStates)) {
- return 'isCommitting change not accepted because fields are not in acceptable state';
- }
- } else if (currentIsCommitting === true && nextIsCommitting === true) {
- return 'isCommitting is a mutex, hence only changes are allowed';
- }
- },
- /**
- * Checks if a state change can be accepted.
- *
- * @param {string} from
- * From state.
- * @param {string} to
- * To state.
- * @param {object} context
- * Context for the check.
- * @param {string} context.reason
- * The reason for the state change.
- * @param {bool} context.confirming
- * Whether context is confirming or not.
- *
- * @return {bool}
- * Whether the state change is accepted or not.
- *
- * @see Drupal.quickedit.AppView#acceptEditorStateChange
- */
- _acceptStateChange(from, to, context) {
- let accept = true;
- // In general, enforce the states sequence. Disallow going back from a
- // "later" state to an "earlier" state, except in explicitly allowed
- // cases.
- if (!this.constructor.followsStateSequence(from, to)) {
- accept = false;
- // Allow: closing -> closed.
- // Necessary to stop editing an entity.
- if (from === 'closing' && to === 'closed') {
- accept = true;
- }
- // Allow: committing -> opened.
- // Necessary to be able to correct an invalid field, or to hit the
- // "Save" button again after a server/network error.
- else if (
- from === 'committing' &&
- to === 'opened' &&
- context.reason &&
- (context.reason === 'invalid' || context.reason === 'networkerror')
- ) {
- accept = true;
- }
- // Allow: deactivating -> opened.
- // Necessary to be able to confirm changes with the user.
- else if (
- from === 'deactivating' &&
- to === 'opened' &&
- context.confirming
- ) {
- accept = true;
- }
- // Allow: opened -> deactivating.
- // Necessary to be able to stop editing.
- else if (
- from === 'opened' &&
- to === 'deactivating' &&
- context.confirmed
- ) {
- accept = true;
- }
- }
- return accept;
- },
- /**
- * Checks if fields have acceptable states.
- *
- * @param {Array} acceptedFieldStates
- * An array of acceptable field states to check for.
- *
- * @return {bool}
- * Whether the fields have an acceptable state.
- *
- * @see Drupal.quickedit.EntityModel#validate
- */
- _fieldsHaveAcceptableStates(acceptedFieldStates) {
- let accept = true;
- // If no acceptable field states are provided, assume all field states are
- // acceptable. We want to let validation pass as a default and only
- // check validity on calls to set that explicitly request it.
- if (acceptedFieldStates.length > 0) {
- const fieldStates = this.get('fields').pluck('state') || [];
- // If not all fields are in one of the accepted field states, then we
- // still can't allow this state change.
- if (_.difference(fieldStates, acceptedFieldStates).length) {
- accept = false;
- }
- }
- return accept;
- },
- /**
- * Destroys the entity model.
- *
- * @param {object} options
- * Options for the entity model.
- */
- destroy(options) {
- Drupal.quickedit.BaseModel.prototype.destroy.call(this, options);
- this.stopListening();
- // Destroy all fields of this entity.
- this.get('fields').reset();
- },
- /**
- * {@inheritdoc}
- */
- sync() {
- // We don't use REST updates to sync.
- },
- },
- /** @lends Drupal.quickedit.EntityModel */ {
- /**
- * Sequence of all possible states an entity can be in during quickediting.
- *
- * @type {Array.<string>}
- */
- states: [
- // Initial state, like field's 'inactive' OR the user has just finished
- // in-place editing this entity.
- // - Trigger: none (initial) or EntityModel (finished).
- // - Expected behavior: (when not initial state): tear down
- // EntityToolbarView, in-place editors and related views.
- 'closed',
- // User has activated in-place editing of this entity.
- // - Trigger: user.
- // - Expected behavior: the EntityToolbarView is gets set up, in-place
- // editors (EditorViews) and related views for this entity's fields are
- // set up. Upon completion of those, the state is changed to 'opening'.
- 'launching',
- // Launching has finished.
- // - Trigger: application.
- // - Guarantees: in-place editors ready for use, all entity and field
- // views have been set up, all fields are in the 'inactive' state.
- // - Expected behavior: all fields are changed to the 'candidate' state
- // and once this is completed, the entity state will be changed to
- // 'opened'.
- 'opening',
- // Opening has finished.
- // - Trigger: EntityModel.
- // - Guarantees: see 'opening', all fields are in the 'candidate' state.
- // - Expected behavior: the user is able to actually use in-place editing.
- 'opened',
- // User has clicked the 'Save' button (and has thus changed at least one
- // field).
- // - Trigger: user.
- // - Guarantees: see 'opened', plus: either a changed field is in
- // PrivateTempStore, or the user has just modified a field without
- // activating (switching to) another field.
- // - Expected behavior: 1) if any of the fields are not yet in
- // PrivateTempStore, save them to PrivateTempStore, 2) if then any of
- // the fields has the 'invalid' state, then change the entity state back
- // to 'opened', otherwise: save the entity by committing it from
- // PrivateTempStore into permanent storage.
- 'committing',
- // User has clicked the 'Close' button, or has clicked the 'Save' button
- // and that was successfully completed.
- // - Trigger: user or EntityModel.
- // - Guarantees: when having clicked 'Close' hardly any: fields may be in
- // a variety of states; when having clicked 'Save': all fields are in
- // the 'candidate' state.
- // - Expected behavior: transition all fields to the 'candidate' state,
- // possibly requiring confirmation in the case of having clicked
- // 'Close'.
- 'deactivating',
- // Deactivation has been completed.
- // - Trigger: EntityModel.
- // - Guarantees: all fields are in the 'candidate' state.
- // - Expected behavior: change all fields to the 'inactive' state.
- 'closing',
- ],
- /**
- * Indicates whether the 'from' state comes before the 'to' state.
- *
- * @param {string} from
- * One of {@link Drupal.quickedit.EntityModel.states}.
- * @param {string} to
- * One of {@link Drupal.quickedit.EntityModel.states}.
- *
- * @return {bool}
- * Whether the 'from' state comes before the 'to' state.
- */
- followsStateSequence(from, to) {
- return _.indexOf(this.states, from) < _.indexOf(this.states, to);
- },
- },
- );
- /**
- * @constructor
- *
- * @augments Backbone.Collection
- */
- Drupal.quickedit.EntityCollection = Backbone.Collection.extend(
- /** @lends Drupal.quickedit.EntityCollection# */ {
- /**
- * @type {Drupal.quickedit.EntityModel}
- */
- model: Drupal.quickedit.EntityModel,
- },
- );
- })(_, jQuery, Backbone, Drupal);
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