/* --------------------------------------------------------------
overview_settings_modal_controller.js 2016-10-04
Gambio GmbH
http://www.gambio.de
Copyright (c) 2016 Gambio GmbH
Released under the GNU General Public License (Version 2)
[http://www.gnu.org/licenses/gpl-2.0.html]
--------------------------------------------------------------
*/
jse.libs.overview_settings_modal_controller = jse.libs.overview_settings_modal_controller || {};
/**
* Overview settings modal controller class.
*
* @module Admin/Libs/overview_settings_modal
* @exports jse.libs.overview_settings_modal
*/
(function(exports) {
/**
* Class representing a controller for the orders overview settings modal.
*/
class OverviewSettingsModalController {
/**
* Creates an instance of OrdersOverviewSettingsModalController.
*
* @param {jQuery} $element Module element.
* @param {Object} userCfgService User configuration service library.
* @param {Object} loadingSpinner Loading spinner library.
* @param {Number} userId ID of currently signed in user.
* @param {String} defaultColumnSettings Default column settings.
* @param {Object} translator Translator library.
* @param {String} page Page name (e.g.: 'orders', 'invoices').
*/
constructor($element, userCfgService, loadingSpinner, userId, defaultColumnSettings, translator, page) {
// Elements
this.$element = $element;
this.$submitButton = $element.find('button.submit-button');
this.$settings = $element.find('ul.settings');
this.$modal = $element.parents('.modal');
this.$modalFooter = $element.find('.modal-footer');
this.$resetDefaultLink = $element.find('a.reset-action');
// Loading spinner
this.$spinner = null;
// Selector strings
this.sortableHandleSelector = 'span.sort-handle';
this.rowHeightValueSelector = 'select#setting-value-row-height';
// Class names
this.errorMessageClassName = 'error-message';
this.loadingClassName = 'loading';
// Libraries
this.userCfgService = userCfgService;
this.loadingSpinner = loadingSpinner;
this.translator = translator;
// Prefixes
this.settingListItemIdPrefix = 'setting-';
this.settingValueIdPrefix = 'setting-value-';
// User configuration keys
this.CONFIG_KEY_COLUMN_SETTINGS = `${page}OverviewSettingsColumns`;
this.CONFIG_KEY_ROW_HEIGHT_SETTINGS = `${page}OverviewSettingsRowHeight`;
// Default values
this.DEFAULT_ROW_HEIGHT_SETTING = 'large';
this.DEFAULT_COLUMN_SETTINGS = defaultColumnSettings.split(',');
// ID of currently signed in user.
this.userId = userId;
}
/**
* Binds the event handlers.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*/
initialize() {
// Attach event handler for click action on the submit button.
this.$submitButton.on('click', event => this._onSubmitButtonClick(event));
// Attach event handler for click action on the reset-default link.
this.$resetDefaultLink.on('click', event => this._onResetSettingsLinkClick(event));
// Attach event handlers to modal.
this.$modal
.on('show.bs.modal', event => this._onModalShow(event))
.on('shown.bs.modal', event => this._onModalShown(event));
return this;
}
/**
* Fades out the modal content.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_onModalShow() {
this.$element.addClass(this.loadingClassName);
return this;
}
/**
* Updates the settings, clears any error messages and initializes the sortable plugin.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_onModalShown() {
this
._refreshSettings()
._clearErrorMessage()
._initSortable();
return this;
}
/**
* Activates the jQuery UI Sortable plugin on the setting list items element.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_initSortable() {
// jQuery UI Sortable plugin options.
const options = {
items: '> li',
axis: 'y',
cursor: 'move',
handle: this.sortableHandleSelector,
containment: 'parent'
};
// Activate sortable plugin.
this.$settings
.sortable(options)
.disableSelection();
return this;
}
/**
* Returns a sorted array containing the IDs of all activated settings.
*
* @return {Array}
*
* @private
*/
_serializeColumnSettings() {
// Map iterator function to remove the 'setting-' prefix from list item ID.
const removePrefixIterator = item => item.replace(this.settingListItemIdPrefix, '');
// Filter iterator function, to accept only list items with activated checkboxes.
const filterIterator = item => this.$settings.find('#' + this.settingValueIdPrefix + item)
.is(':checked');
// Return array with sorted, only active columns.
return this.$settings
.sortable('toArray')
.map(removePrefixIterator)
.filter(filterIterator);
}
/**
* Returns the value of the selected row height option.
*
* @return {String}
*
* @private
*/
_serializeRowHeightSetting() {
return this
.$element
.find(this.rowHeightValueSelector)
.val();
}
/**
* Shows the loading spinner, saves the settings to the user configuration,
* closes the modal to finally re-render the datatable.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_onSubmitButtonClick() {
// Retrieve setting values.
const columnSettings = this._serializeColumnSettings();
const rowHeightSetting = this._serializeRowHeightSetting();
// Remove any error message and save settings.
this
._toggleLoadingSpinner(true)
._clearErrorMessage()
._saveColumnSettings(columnSettings)
.then(() => this._saveRowHeightSetting(rowHeightSetting))
.then(() => this._onSaveSuccess())
.catch(() => this._onSaveError());
return this;
}
/**
* Prevents the browser to apply the default behavoir and
* resets the column order and row size to the default setting values.
*
* @param {jQuery.Event} event Fired event.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_onResetSettingsLinkClick(event) {
// Prevent default behavior.
event.preventDefault();
event.stopPropagation();
// Reset to default settings.
this._setDefaultSettings();
return this;
}
/**
* Shows and hides the loading spinner.
*
* @param {Boolean} doShow Show the loading spinner?
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*/
_toggleLoadingSpinner(doShow) {
if (doShow) {
// Fade out modal content.
this.$element.addClass(this.loadingClassName);
// Show loading spinner.
this.$spinner = this.loadingSpinner.show(this.$element);
// Fix spinner z-index.
this.$spinner.css({'z-index': 9999});
} else {
// Fade out modal content.
this.$element.removeClass(this.loadingClassName);
// Hide the loading spinner.
this.loadingSpinner.hide(this.$spinner);
}
return this;
}
/**
* Handles the behavior on successful setting save action.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_onSaveSuccess() {
window.location.reload();
return this;
}
/**
* Removes any error message, if found.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_clearErrorMessage() {
// Error message.
const $errorMessage = this.$modalFooter.find(`.${this.errorMessageClassName}`);
// Remove if it exists.
if ($errorMessage.length) {
$errorMessage.remove();
}
return this;
}
/**
* Handles the behavior on thrown error while saving settings.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_onSaveError() {
// Error message.
const errorMessage = this.translator.translate('TXT_SAVE_ERROR', 'admin_general');
// Define error message element.
const $error = $('<span/>', {class: this.errorMessageClassName, text: errorMessage});
// Hide the loading spinner.
this._toggleLoadingSpinner(false);
// Add error message to modal footer.
this.$modalFooter
.prepend($error)
.hide()
.fadeIn();
return this;
}
/**
* Returns the configuration value for the column settings.
*
* @return {Promise}
*
* @private
*/
_getColumnSettings() {
// Configuration data.
const data = {
userId: this.userId,
configurationKey: this.CONFIG_KEY_COLUMN_SETTINGS
};
// Request data from user configuration service.
return this._getFromUserCfgService(data);
}
/**
* Returns the configuration value for the row heights.
*
* @return {Promise}
*
* @private
*/
_getRowHeightSetting() {
// Configuration data.
const data = {
userId: this.userId,
configurationKey: this.CONFIG_KEY_ROW_HEIGHT_SETTINGS
};
// Request data from user configuration service.
return this._getFromUserCfgService(data);
}
/**
* Returns the value for the passed user configuration data.
*
* @param {Object} data User configuration data.
* @param {Number} data.userId User ID.
* @param {String} data.configurationKey User configuration key.
*
* @return {Promise}
*
* @private
*/
_getFromUserCfgService(data) {
// Promise handler.
const handler = (resolve, reject) => {
// User configuration service request options.
const options = {
onError: () => reject(),
onSuccess: response => resolve(response.configurationValue),
data
};
// Get configuration value.
this.userCfgService.get(options);
};
return new Promise(handler);
}
/**
* Saves the data via the user configuration service.
*
* @param {Object} data User configuration data.
* @param {Number} data.userId User ID.
* @param {String} data.configurationKey User configuration key.
* @param {String} data.configurationValue User configuration value.
*
* @return {Promise}
*
* @private
*/
_setWithUserCfgService(data) {
// Promise handler.
const handler = (resolve, reject) => {
// User configuration service request options.
const options = {
onError: () => reject(),
onSuccess: response => resolve(),
data
};
// Set configuration value.
this.userCfgService.set(options);
};
return new Promise(handler);
}
/**
* Saves the column settings via the user configuration service.
*
* @param {String[]} columnSettings Sorted array with active column.
*
* @return {Promise}
*
* @private
*/
_saveColumnSettings(columnSettings) {
// Check argument.
if (!columnSettings || !Array.isArray(columnSettings)) {
throw new Error('Missing or invalid column settings');
}
// User configuration request data.
const data = {
userId: this.userId,
configurationKey: this.CONFIG_KEY_COLUMN_SETTINGS,
configurationValue: JSON.stringify(columnSettings)
};
// Save via user configuration service.
return this._setWithUserCfgService(data);
}
/**
* Saves the row height setting via the user configuration service.
*
* @param {String} rowHeightSetting Value of the selected row height setting.
*
* @return {Promise}
*
* @private
*/
_saveRowHeightSetting(rowHeightSetting) {
// Check argument.
if (!rowHeightSetting || typeof rowHeightSetting !== 'string') {
throw new Error('Missing or invalid row height setting');
}
// User configuration request data.
const data = {
userId: this.userId,
configurationKey: this.CONFIG_KEY_ROW_HEIGHT_SETTINGS,
configurationValue: rowHeightSetting
};
// Save via user configuration service.
return this._setWithUserCfgService(data);
}
/**
* Retrieves the saved setting configuration and reorders/updates the settings.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_refreshSettings() {
// Show loading spinner.
this._toggleLoadingSpinner(true);
// Error handler function to specify the behavior on errors while processing.
const onRefreshSettingsError = error => {
// Output warning.
console.warn('Error while refreshing', error);
// Hide the loading spinner.
this._toggleLoadingSpinner(false);
};
// Remove any error message, set row height,
// reorder and update the settings and hide the loading spinner.
this
._clearErrorMessage()
._getRowHeightSetting()
.then(rowHeightValue => this._setRowHeight(rowHeightValue))
.then(() => this._getColumnSettings())
.then(columnSettings => this._setColumnSettings(columnSettings))
.then(() => this._toggleLoadingSpinner(false))
.catch(onRefreshSettingsError);
return this;
}
/**
* Sets the row height setting value.
*
* @param {String} value Row height value.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_setRowHeight(value = this.DEFAULT_ROW_HEIGHT_SETTING) {
this
.$element
.find(this.rowHeightValueSelector)
.val(value);
return this;
}
/**
* Reorders and updates the column setting values.
*
* @param {String|Array} columnSettings Stringified JSON array containing the saved column settings.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_setColumnSettings(columnSettings = this.DEFAULT_COLUMN_SETTINGS) {
// Regex for escape character.
const ESCAPE_CHAR = /\\/g;
// No need to parse from JSON on default value as it is an array.
if (!Array.isArray(columnSettings)) {
// Remove escape characters from and parse array from JSON.
columnSettings = columnSettings.replace(ESCAPE_CHAR, '');
columnSettings = JSON.parse(columnSettings);
}
// Cache container to temporarily hold all active list items in sorted order.
// The children of this element will be prepended to the setting list item container to retain the
// sorting order.
const $sortedItems = $('<div/>');
// Iterator function to prepend active list items to the top and activate the checkbox.
const settingIterator = setting => {
// List item ID.
const id = this.settingListItemIdPrefix + setting;
// Affected setting list item.
const $listItem = this.$settings.find(`#${id}`);
// Checkbox of affected list item.
const $checkbox = $listItem.find('#' + this.settingValueIdPrefix + setting);
// Activate checkbox.
if (!$checkbox.is(':checked')) {
$checkbox.parent().trigger('click');
}
// Move to cache container.
$listItem.appendTo($sortedItems);
};
// Move active list items to the top bearing the sorting order in mind.
columnSettings.forEach(settingIterator);
// Prepend cached elements to item list.
$sortedItems
.children()
.prependTo(this.$settings);
return this;
}
/**
* Resets the column order and row height settings to the default.
*
* @return {OverviewSettingsModalController} Same instance for method chaining.
*
* @private
*/
_setDefaultSettings() {
// Default values.
const columnSettings = this.DEFAULT_COLUMN_SETTINGS;
const rowHeight = this.DEFAULT_ROW_HEIGHT_SETTING;
// Set column settings.
// Cache container to temporarily hold all active list items in sorted order.
// The children of this element will be prepended to the setting list item container to retain the
// sorting order.
const $sortedItems = $('<div/>');
// Iterator function to prepend active list items to the top and activate the checkbox.
const settingIterator = setting => {
// List item ID.
const id = this.settingListItemIdPrefix + setting;
// Affected setting list item.
const $listItem = this.$settings.find(`#${id}`);
// Checkbox of affected list item.
const $checkbox = $listItem.find('#' + this.settingValueIdPrefix + setting);
// Activate checkbox.
if (!$checkbox.is(':checked')) {
$checkbox.parent().trigger('click');
}
// Move to cache container.
$listItem.appendTo($sortedItems);
};
// Deactivate all checkboxes.
this
.$settings
.find(':checkbox')
.each((index, element) => {
const $checkbox = $(element);
if ($checkbox.is(':checked')) {
$checkbox.parent().trigger('click');
}
});
// Move active list items to the top bearing the sorting order in mind.
columnSettings.forEach(settingIterator);
// Prepend cached elements to item list.
$sortedItems
.children()
.prependTo(this.$settings);
// Set row height.
this
.$element
.find(this.rowHeightValueSelector)
.val(rowHeight);
return this;
}
}
exports.class = OverviewSettingsModalController;
}(jse.libs.overview_settings_modal_controller));