Sindbad~EG File Manager
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Manage user tours in Moodle.
*
* @module tool_usertours/tour
* @copyright 2018 Andrew Nicols <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
import $ from 'jquery';
import * as Aria from 'core/aria';
import Popper from 'core/popper';
/**
* A Tour.
*
* @class
*/
export default class Tour {
/**
* @param {object} config The configuration object.
*/
constructor(config) {
this.init(config);
}
/**
* Initialise the tour.
*
* @method init
* @param {Object} config The configuration object.
* @chainable
* @return {Object} this.
*/
init(config) {
// Unset all handlers.
this.eventHandlers = {};
// Reset the current tour states.
this.reset();
// Store the initial configuration.
this.originalConfiguration = config || {};
// Apply configuration.
this.configure.apply(this, arguments);
try {
this.storage = window.sessionStorage;
this.storageKey = 'tourstate_' + this.tourName;
} catch (e) {
this.storage = false;
this.storageKey = '';
}
return this;
}
/**
* Reset the current tour state.
*
* @method reset
* @chainable
* @return {Object} this.
*/
reset() {
// Hide the current step.
this.hide();
// Unset all handlers.
this.eventHandlers = [];
// Unset all listeners.
this.resetStepListeners();
// Unset the original configuration.
this.originalConfiguration = {};
// Reset the current step number and list of steps.
this.steps = [];
// Reset the current step number.
this.currentStepNumber = 0;
return this;
}
/**
* Prepare tour configuration.
*
* @method configure
* @param {Object} config The configuration object.
* @chainable
* @return {Object} this.
*/
configure(config) {
if (typeof config === 'object') {
// Tour name.
if (typeof config.tourName !== 'undefined') {
this.tourName = config.tourName;
}
// Set up eventHandlers.
if (config.eventHandlers) {
for (let eventName in config.eventHandlers) {
config.eventHandlers[eventName].forEach(function(handler) {
this.addEventHandler(eventName, handler);
}, this);
}
}
// Reset the step configuration.
this.resetStepDefaults(true);
// Configure the steps.
if (typeof config.steps === 'object') {
this.steps = config.steps;
}
if (typeof config.template !== 'undefined') {
this.templateContent = config.template;
}
}
// Check that we have enough to start the tour.
this.checkMinimumRequirements();
return this;
}
/**
* Check that the configuration meets the minimum requirements.
*
* @method checkMinimumRequirements
*/
checkMinimumRequirements() {
// Need a tourName.
if (!this.tourName) {
throw new Error("Tour Name required");
}
// Need a minimum of one step.
if (!this.steps || !this.steps.length) {
throw new Error("Steps must be specified");
}
}
/**
* Reset step default configuration.
*
* @method resetStepDefaults
* @param {Boolean} loadOriginalConfiguration Whether to load the original configuration supplied with the Tour.
* @chainable
* @return {Object} this.
*/
resetStepDefaults(loadOriginalConfiguration) {
if (typeof loadOriginalConfiguration === 'undefined') {
loadOriginalConfiguration = true;
}
this.stepDefaults = {};
if (!loadOriginalConfiguration || typeof this.originalConfiguration.stepDefaults === 'undefined') {
this.setStepDefaults({});
} else {
this.setStepDefaults(this.originalConfiguration.stepDefaults);
}
return this;
}
/**
* Set the step defaults.
*
* @method setStepDefaults
* @param {Object} stepDefaults The step defaults to apply to all steps
* @chainable
* @return {Object} this.
*/
setStepDefaults(stepDefaults) {
if (!this.stepDefaults) {
this.stepDefaults = {};
}
$.extend(
this.stepDefaults,
{
element: '',
placement: 'top',
delay: 0,
moveOnClick: false,
moveAfterTime: 0,
orphan: false,
direction: 1,
},
stepDefaults
);
return this;
}
/**
* Retrieve the current step number.
*
* @method getCurrentStepNumber
* @return {Integer} The current step number
*/
getCurrentStepNumber() {
return parseInt(this.currentStepNumber, 10);
}
/**
* Store the current step number.
*
* @method setCurrentStepNumber
* @param {Integer} stepNumber The current step number
* @chainable
*/
setCurrentStepNumber(stepNumber) {
this.currentStepNumber = stepNumber;
if (this.storage) {
try {
this.storage.setItem(this.storageKey, stepNumber);
} catch (e) {
if (e.code === DOMException.QUOTA_EXCEEDED_ERR) {
this.storage.removeItem(this.storageKey);
}
}
}
}
/**
* Get the next step number after the currently displayed step.
*
* @method getNextStepNumber
* @param {Integer} stepNumber The current step number
* @return {Integer} The next step number to display
*/
getNextStepNumber(stepNumber) {
if (typeof stepNumber === 'undefined') {
stepNumber = this.getCurrentStepNumber();
}
let nextStepNumber = stepNumber + 1;
// Keep checking the remaining steps.
while (nextStepNumber <= this.steps.length) {
if (this.isStepPotentiallyVisible(this.getStepConfig(nextStepNumber))) {
return nextStepNumber;
}
nextStepNumber++;
}
return null;
}
/**
* Get the previous step number before the currently displayed step.
*
* @method getPreviousStepNumber
* @param {Integer} stepNumber The current step number
* @return {Integer} The previous step number to display
*/
getPreviousStepNumber(stepNumber) {
if (typeof stepNumber === 'undefined') {
stepNumber = this.getCurrentStepNumber();
}
let previousStepNumber = stepNumber - 1;
// Keep checking the remaining steps.
while (previousStepNumber >= 0) {
if (this.isStepPotentiallyVisible(this.getStepConfig(previousStepNumber))) {
return previousStepNumber;
}
previousStepNumber--;
}
return null;
}
/**
* Is the step the final step number?
*
* @method isLastStep
* @param {Integer} stepNumber Step number to test
* @return {Boolean} Whether the step is the final step
*/
isLastStep(stepNumber) {
let nextStepNumber = this.getNextStepNumber(stepNumber);
return nextStepNumber === null;
}
/**
* Is the step the first step number?
*
* @method isFirstStep
* @param {Integer} stepNumber Step number to test
* @return {Boolean} Whether the step is the first step
*/
isFirstStep(stepNumber) {
let previousStepNumber = this.getPreviousStepNumber(stepNumber);
return previousStepNumber === null;
}
/**
* Is this step potentially visible?
*
* @method isStepPotentiallyVisible
* @param {Object} stepConfig The step configuration to normalise
* @return {Boolean} Whether the step is the potentially visible
*/
isStepPotentiallyVisible(stepConfig) {
if (!stepConfig) {
// Without step config, there can be no step.
return false;
}
if (this.isStepActuallyVisible(stepConfig)) {
// If it is actually visible, it is already potentially visible.
return true;
}
if (typeof stepConfig.orphan !== 'undefined' && stepConfig.orphan) {
// Orphan steps have no target. They are always visible.
return true;
}
if (typeof stepConfig.delay !== 'undefined' && stepConfig.delay) {
// Only return true if the activated has not been used yet.
return true;
}
// Not theoretically, or actually visible.
return false;
}
/**
* Is this step actually visible?
*
* @method isStepActuallyVisible
* @param {Object} stepConfig The step configuration to normalise
* @return {Boolean} Whether the step is actually visible
*/
isStepActuallyVisible(stepConfig) {
if (!stepConfig) {
// Without step config, there can be no step.
return false;
}
let target = this.getStepTarget(stepConfig);
if (target && target.length && target.is(':visible')) {
// Without a target, there can be no step.
return !!target.length;
}
return false;
}
/**
* Go to the next step in the tour.
*
* @method next
* @chainable
* @return {Object} this.
*/
next() {
return this.gotoStep(this.getNextStepNumber());
}
/**
* Go to the previous step in the tour.
*
* @method previous
* @chainable
* @return {Object} this.
*/
previous() {
return this.gotoStep(this.getPreviousStepNumber(), -1);
}
/**
* Go to the specified step in the tour.
*
* @method gotoStep
* @param {Integer} stepNumber The step number to display
* @param {Integer} direction Next or previous step
* @chainable
* @return {Object} this.
*/
gotoStep(stepNumber, direction) {
if (stepNumber < 0) {
return this.endTour();
}
let stepConfig = this.getStepConfig(stepNumber);
if (stepConfig === null) {
return this.endTour();
}
return this._gotoStep(stepConfig, direction);
}
_gotoStep(stepConfig, direction) {
if (!stepConfig) {
return this.endTour();
}
if (typeof stepConfig.delay !== 'undefined' && stepConfig.delay && !stepConfig.delayed) {
stepConfig.delayed = true;
window.setTimeout(this._gotoStep.bind(this), stepConfig.delay, stepConfig, direction);
return this;
} else if (!stepConfig.orphan && !this.isStepActuallyVisible(stepConfig)) {
let fn = direction == -1 ? 'getPreviousStepNumber' : 'getNextStepNumber';
return this.gotoStep(this[fn](stepConfig.stepNumber), direction);
}
this.hide();
this.fireEventHandlers('beforeRender', stepConfig);
this.renderStep(stepConfig);
this.fireEventHandlers('afterRender', stepConfig);
return this;
}
/**
* Fetch the normalised step configuration for the specified step number.
*
* @method getStepConfig
* @param {Integer} stepNumber The step number to fetch configuration for
* @return {Object} The step configuration
*/
getStepConfig(stepNumber) {
if (stepNumber === null || stepNumber < 0 || stepNumber >= this.steps.length) {
return null;
}
// Normalise the step configuration.
let stepConfig = this.normalizeStepConfig(this.steps[stepNumber]);
// Add the stepNumber to the stepConfig.
stepConfig = $.extend(stepConfig, {stepNumber: stepNumber});
return stepConfig;
}
/**
* Normalise the supplied step configuration.
*
* @method normalizeStepConfig
* @param {Object} stepConfig The step configuration to normalise
* @return {Object} The normalised step configuration
*/
normalizeStepConfig(stepConfig) {
if (typeof stepConfig.reflex !== 'undefined' && typeof stepConfig.moveAfterClick === 'undefined') {
stepConfig.moveAfterClick = stepConfig.reflex;
}
if (typeof stepConfig.element !== 'undefined' && typeof stepConfig.target === 'undefined') {
stepConfig.target = stepConfig.element;
}
if (typeof stepConfig.content !== 'undefined' && typeof stepConfig.body === 'undefined') {
stepConfig.body = stepConfig.content;
}
stepConfig = $.extend({}, this.stepDefaults, stepConfig);
stepConfig = $.extend({}, {
attachTo: stepConfig.target,
attachPoint: 'after',
}, stepConfig);
if (stepConfig.attachTo) {
stepConfig.attachTo = $(stepConfig.attachTo).first();
}
return stepConfig;
}
/**
* Fetch the actual step target from the selector.
*
* This should not be called until after any delay has completed.
*
* @method getStepTarget
* @param {Object} stepConfig The step configuration
* @return {$}
*/
getStepTarget(stepConfig) {
if (stepConfig.target) {
return $(stepConfig.target);
}
return null;
}
/**
* Fire any event handlers for the specified event.
*
* @param {String} eventName The name of the event to handle
* @param {Object} data Any data to pass to the event
* @chainable
* @return {Object} this.
*/
fireEventHandlers(eventName, data) {
if (typeof this.eventHandlers[eventName] === 'undefined') {
return this;
}
this.eventHandlers[eventName].forEach(function(thisEvent) {
thisEvent.call(this, data);
}, this);
return this;
}
/**
* @method addEventHandler
* @param {string} eventName The name of the event to listen for
* @param {function} handler The event handler to call
* @return {Object} this.
*/
addEventHandler(eventName, handler) {
if (typeof this.eventHandlers[eventName] === 'undefined') {
this.eventHandlers[eventName] = [];
}
this.eventHandlers[eventName].push(handler);
return this;
}
/**
* Process listeners for the step being shown.
*
* @method processStepListeners
* @param {object} stepConfig The configuration for the step
* @chainable
* @return {Object} this.
*/
processStepListeners(stepConfig) {
this.listeners.push(
// Next/Previous buttons.
{
node: this.currentStepNode,
args: ['click', '[data-role="next"]', $.proxy(this.next, this)]
}, {
node: this.currentStepNode,
args: ['click', '[data-role="previous"]', $.proxy(this.previous, this)]
},
// Close and end tour buttons.
{
node: this.currentStepNode,
args: ['click', '[data-role="end"]', $.proxy(this.endTour, this)]
},
// Click backdrop and hide tour.
{
node: $('[data-flexitour="backdrop"]'),
args: ['click', $.proxy(this.hide, this)]
},
// Keypresses.
{
node: $('body'),
args: ['keydown', $.proxy(this.handleKeyDown, this)]
});
if (stepConfig.moveOnClick) {
var targetNode = this.getStepTarget(stepConfig);
this.listeners.push({
node: targetNode,
args: ['click', $.proxy(function(e) {
if ($(e.target).parents('[data-flexitour="container"]').length === 0) {
// Ignore clicks when they are in the flexitour.
window.setTimeout($.proxy(this.next, this), 500);
}
}, this)]
});
}
this.listeners.forEach(function(listener) {
listener.node.on.apply(listener.node, listener.args);
});
return this;
}
/**
* Reset step listeners.
*
* @method resetStepListeners
* @chainable
* @return {Object} this.
*/
resetStepListeners() {
// Stop listening to all external handlers.
if (this.listeners) {
this.listeners.forEach(function(listener) {
listener.node.off.apply(listener.node, listener.args);
});
}
this.listeners = [];
return this;
}
/**
* The standard step renderer.
*
* @method renderStep
* @param {Object} stepConfig The step configuration of the step
* @chainable
* @return {Object} this.
*/
renderStep(stepConfig) {
// Store the current step configuration for later.
this.currentStepConfig = stepConfig;
this.setCurrentStepNumber(stepConfig.stepNumber);
// Fetch the template and convert it to a $ object.
let template = $(this.getTemplateContent());
// Title.
template.find('[data-placeholder="title"]')
.html(stepConfig.title);
// Body.
template.find('[data-placeholder="body"]')
.html(stepConfig.body);
// Is this the first step?
if (this.isFirstStep(stepConfig.stepNumber)) {
template.find('[data-role="previous"]').hide();
} else {
template.find('[data-role="previous"]').prop('disabled', false);
}
// Is this the final step?
if (this.isLastStep(stepConfig.stepNumber)) {
template.find('[data-role="next"]').hide();
template.find('[data-role="end"]').removeClass("btn-secondary").addClass("btn-primary");
} else {
template.find('[data-role="next"]').prop('disabled', false);
}
template.find('[data-role="previous"]').attr('role', 'button');
template.find('[data-role="next"]').attr('role', 'button');
template.find('[data-role="end"]').attr('role', 'button');
// Replace the template with the updated version.
stepConfig.template = template;
// Add to the page.
this.addStepToPage(stepConfig);
// Process step listeners after adding to the page.
// This uses the currentNode.
this.processStepListeners(stepConfig);
return this;
}
/**
* Getter for the template content.
*
* @method getTemplateContent
* @return {$}
*/
getTemplateContent() {
return $(this.templateContent).clone();
}
/**
* Helper to add a step to the page.
*
* @method addStepToPage
* @param {Object} stepConfig The step configuration of the step
* @chainable
* @return {Object} this.
*/
addStepToPage(stepConfig) {
// Create the stepNode from the template data.
let currentStepNode = $('<span data-flexitour="container"></span>')
.html(stepConfig.template)
.hide();
// The scroll animation occurs on the body or html.
let animationTarget = $('body, html')
.stop(true, true);
if (this.isStepActuallyVisible(stepConfig)) {
let targetNode = this.getStepTarget(stepConfig);
targetNode.data('flexitour', 'target');
let zIndex = this.calculateZIndex(targetNode);
if (zIndex) {
stepConfig.zIndex = zIndex + 1;
}
if (stepConfig.zIndex) {
currentStepNode.css('zIndex', stepConfig.zIndex + 1);
}
// Add the backdrop.
this.positionBackdrop(stepConfig);
$(document.body).append(currentStepNode);
this.currentStepNode = currentStepNode;
// Ensure that the step node is positioned.
// Some situations mean that the value is not properly calculated without this step.
this.currentStepNode.css({
top: 0,
left: 0,
});
animationTarget
.animate({
scrollTop: this.calculateScrollTop(stepConfig),
}).promise().then(function() {
this.positionStep(stepConfig);
this.revealStep(stepConfig);
return;
}.bind(this))
.catch(function() {
// Silently fail.
});
} else if (stepConfig.orphan) {
stepConfig.isOrphan = true;
// This will be appended to the body instead.
stepConfig.attachTo = $('body').first();
stepConfig.attachPoint = 'append';
// Add the backdrop.
this.positionBackdrop(stepConfig);
// This is an orphaned step.
currentStepNode.addClass('orphan');
// It lives in the body.
$(document.body).append(currentStepNode);
this.currentStepNode = currentStepNode;
this.currentStepNode.offset(this.calculateStepPositionInPage());
this.currentStepNode.css('position', 'fixed');
this.currentStepPopper = new Popper(
$('body'),
this.currentStepNode[0], {
removeOnDestroy: true,
placement: stepConfig.placement + '-start',
arrowElement: '[data-role="arrow"]',
// Empty the modifiers. We've already placed the step and don't want it moved.
modifiers: {
hide: {
enabled: false,
},
applyStyle: {
onLoad: null,
enabled: false,
},
}
}
);
this.revealStep(stepConfig);
}
return this;
}
/**
* Make the given step visible.
*
* @method revealStep
* @param {Object} stepConfig The step configuration of the step
* @chainable
* @return {Object} this.
*/
revealStep(stepConfig) {
// Fade the step in.
this.currentStepNode.fadeIn('', $.proxy(function() {
// Announce via ARIA.
this.announceStep(stepConfig);
// Focus on the current step Node.
this.currentStepNode.focus();
window.setTimeout($.proxy(function() {
// After a brief delay, focus again.
// There seems to be an issue with Jaws where it only reads the dialogue title initially.
// This second focus helps it to read the full dialogue.
if (this.currentStepNode) {
this.currentStepNode.focus();
}
}, this), 100);
}, this));
return this;
}
/**
* Helper to announce the step on the page.
*
* @method announceStep
* @param {Object} stepConfig The step configuration of the step
* @chainable
* @return {Object} this.
*/
announceStep(stepConfig) {
// Setup the step Dialogue as per:
// * https://www.w3.org/TR/wai-aria-practices/#dialog_nonmodal
// * https://www.w3.org/TR/wai-aria-practices/#dialog_modal
// Generate an ID for the current step node.
let stepId = 'tour-step-' + this.tourName + '-' + stepConfig.stepNumber;
this.currentStepNode.attr('id', stepId);
let bodyRegion = this.currentStepNode.find('[data-placeholder="body"]').first();
bodyRegion.attr('id', stepId + '-body');
bodyRegion.attr('role', 'document');
let headerRegion = this.currentStepNode.find('[data-placeholder="title"]').first();
headerRegion.attr('id', stepId + '-title');
headerRegion.attr('aria-labelledby', stepId + '-body');
// Generally, a modal dialog has a role of dialog.
this.currentStepNode.attr('role', 'dialog');
this.currentStepNode.attr('tabindex', 0);
this.currentStepNode.attr('aria-labelledby', stepId + '-title');
this.currentStepNode.attr('aria-describedby', stepId + '-body');
// Configure ARIA attributes on the target.
let target = this.getStepTarget(stepConfig);
if (target) {
if (!target.attr('tabindex')) {
target.attr('tabindex', 0);
}
target
.data('original-describedby', target.attr('aria-describedby'))
.attr('aria-describedby', stepId + '-body')
;
}
this.accessibilityShow(stepConfig);
return this;
}
/**
* Handle key down events.
*
* @method handleKeyDown
* @param {EventFacade} e
*/
handleKeyDown(e) {
let tabbableSelector = 'a[href], link[href], [draggable=true], [contenteditable=true], ';
tabbableSelector += ':input:enabled, [tabindex], button:enabled';
switch (e.keyCode) {
case 27:
this.endTour();
break;
// 9 == Tab - trap focus for items with a backdrop.
case 9:
// Tab must be handled on key up only in this instance.
(function() {
if (!this.currentStepConfig.hasBackdrop) {
// Trapping tab focus is only handled for those steps with a backdrop.
return;
}
// Find all tabbable locations.
let activeElement = $(document.activeElement);
let stepTarget = this.getStepTarget(this.currentStepConfig);
let tabbableNodes = $(tabbableSelector);
let dialogContainer = $('span[data-flexitour="container"]');
let currentIndex;
// Filter out element which is not belong to target section or dialogue.
if (stepTarget) {
tabbableNodes = tabbableNodes.filter(function(index, element) {
return stepTarget !== null
&& (stepTarget.has(element).length
|| dialogContainer.has(element).length
|| stepTarget.is(element)
|| dialogContainer.is(element));
});
}
// Find index of focusing element.
tabbableNodes.each(function(index, element) {
if (activeElement.is(element)) {
currentIndex = index;
return false;
}
// Keep looping.
return true;
});
let nextIndex;
let nextNode;
let focusRelevant;
if (currentIndex != void 0) {
let direction = 1;
if (e.shiftKey) {
direction = -1;
}
nextIndex = currentIndex;
do {
nextIndex += direction;
nextNode = $(tabbableNodes[nextIndex]);
} while (nextNode.length && nextNode.is(':disabled') || nextNode.is(':hidden'));
if (nextNode.length) {
// A new f
focusRelevant = nextNode.closest(stepTarget).length;
focusRelevant = focusRelevant || nextNode.closest(this.currentStepNode).length;
} else {
// Unable to find the target somehow.
focusRelevant = false;
}
}
if (focusRelevant) {
nextNode.focus();
} else {
if (e.shiftKey) {
// Focus on the last tabbable node in the step.
this.currentStepNode.find(tabbableSelector).last().focus();
} else {
if (this.currentStepConfig.isOrphan) {
// Focus on the step - there is no target.
this.currentStepNode.focus();
} else {
// Focus on the step target.
stepTarget.focus();
}
}
}
e.preventDefault();
}).call(this);
break;
}
}
/**
* Start the current tour.
*
* @method startTour
* @param {Integer} startAt Which step number to start at. If not specified, starts at the last point.
* @chainable
* @return {Object} this.
*/
startTour(startAt) {
if (this.storage && typeof startAt === 'undefined') {
let storageStartValue = this.storage.getItem(this.storageKey);
if (storageStartValue) {
let storageStartAt = parseInt(storageStartValue, 10);
if (storageStartAt <= this.steps.length) {
startAt = storageStartAt;
}
}
}
if (typeof startAt === 'undefined') {
startAt = this.getCurrentStepNumber();
}
this.fireEventHandlers('beforeStart', startAt);
this.gotoStep(startAt);
this.fireEventHandlers('afterStart', startAt);
return this;
}
/**
* Restart the tour from the beginning, resetting the completionlag.
*
* @method restartTour
* @chainable
* @return {Object} this.
*/
restartTour() {
return this.startTour(0);
}
/**
* End the current tour.
*
* @method endTour
* @chainable
* @return {Object} this.
*/
endTour() {
this.fireEventHandlers('beforeEnd');
if (this.currentStepConfig) {
let previousTarget = this.getStepTarget(this.currentStepConfig);
if (previousTarget) {
if (!previousTarget.attr('tabindex')) {
previousTarget.attr('tabindex', '-1');
}
previousTarget.focus();
}
}
this.hide(true);
this.fireEventHandlers('afterEnd');
return this;
}
/**
* Hide any currently visible steps.
*
* @method hide
* @param {Bool} transition Animate the visibility change
* @chainable
* @return {Object} this.
*/
hide(transition) {
this.fireEventHandlers('beforeHide');
if (this.currentStepNode && this.currentStepNode.length) {
this.currentStepNode.hide();
if (this.currentStepPopper) {
this.currentStepPopper.destroy();
}
}
// Restore original target configuration.
if (this.currentStepConfig) {
let target = this.getStepTarget(this.currentStepConfig);
if (target) {
if (target.data('original-labelledby')) {
target.attr('aria-labelledby', target.data('original-labelledby'));
}
if (target.data('original-describedby')) {
target.attr('aria-describedby', target.data('original-describedby'));
}
if (target.data('original-tabindex')) {
target.attr('tabindex', target.data('tabindex'));
}
}
// Clear the step configuration.
this.currentStepConfig = null;
}
let fadeTime = 0;
if (transition) {
fadeTime = 400;
}
// Remove the backdrop features.
$('[data-flexitour="step-background"]').remove();
$('[data-flexitour="step-backdrop"]').removeAttr('data-flexitour');
$('[data-flexitour="backdrop"]').fadeOut(fadeTime, function() {
$(this).remove();
});
// Remove aria-describedby and tabindex attributes.
if (this.currentStepNode && this.currentStepNode.length) {
let stepId = this.currentStepNode.attr('id');
if (stepId) {
let currentStepElement = '[aria-describedby="' + stepId + '-body"]';
$(currentStepElement).removeAttr('tabindex');
$(currentStepElement).removeAttr('aria-describedby');
}
}
// Reset the listeners.
this.resetStepListeners();
this.accessibilityHide();
this.fireEventHandlers('afterHide');
this.currentStepNode = null;
this.currentStepPopper = null;
return this;
}
/**
* Show the current steps.
*
* @method show
* @chainable
* @return {Object} this.
*/
show() {
// Show the current step.
let startAt = this.getCurrentStepNumber();
return this.gotoStep(startAt);
}
/**
* Return the current step node.
*
* @method getStepContainer
* @return {jQuery}
*/
getStepContainer() {
return $(this.currentStepNode);
}
/**
* Calculate scrollTop.
*
* @method calculateScrollTop
* @param {Object} stepConfig The step configuration of the step
* @return {Number}
*/
calculateScrollTop(stepConfig) {
let scrollTop = $(window).scrollTop();
let viewportHeight = $(window).height();
let targetNode = this.getStepTarget(stepConfig);
if (stepConfig.placement === 'top') {
// If the placement is top, center scroll at the top of the target.
scrollTop = targetNode.offset().top - (viewportHeight / 2);
} else if (stepConfig.placement === 'bottom') {
// If the placement is bottom, center scroll at the bottom of the target.
scrollTop = targetNode.offset().top + targetNode.height() - (viewportHeight / 2);
} else if (targetNode.height() <= (viewportHeight * 0.8)) {
// If the placement is left/right, and the target fits in the viewport, centre screen on the target
scrollTop = targetNode.offset().top - ((viewportHeight - targetNode.height()) / 2);
} else {
// If the placement is left/right, and the target is bigger than the viewport, set scrollTop to target.top + buffer
// and change step attachmentTarget to top+.
scrollTop = targetNode.offset().top - (viewportHeight * 0.2);
}
// Never scroll over the top.
scrollTop = Math.max(0, scrollTop);
// Never scroll beyond the bottom.
scrollTop = Math.min($(document).height() - viewportHeight, scrollTop);
return Math.ceil(scrollTop);
}
/**
* Calculate dialogue position for page middle.
*
* @method calculateScrollTop
* @return {Number}
*/
calculateStepPositionInPage() {
let viewportHeight = $(window).height();
let stepHeight = this.currentStepNode.height();
let viewportWidth = $(window).width();
let stepWidth = this.currentStepNode.width();
return {
top: Math.ceil((viewportHeight - stepHeight) / 2),
left: Math.ceil((viewportWidth - stepWidth) / 2)
};
}
/**
* Position the step on the page.
*
* @method positionStep
* @param {Object} stepConfig The step configuration of the step
* @chainable
* @return {Object} this.
*/
positionStep(stepConfig) {
let content = this.currentStepNode;
if (!content || !content.length) {
// Unable to find the step node.
return this;
}
stepConfig.placement = this.recalculatePlacement(stepConfig);
let flipBehavior;
switch (stepConfig.placement) {
case 'left':
flipBehavior = ['left', 'right', 'top', 'bottom'];
break;
case 'right':
flipBehavior = ['right', 'left', 'top', 'bottom'];
break;
case 'top':
flipBehavior = ['top', 'bottom', 'right', 'left'];
break;
case 'bottom':
flipBehavior = ['bottom', 'top', 'right', 'left'];
break;
default:
flipBehavior = 'flip';
break;
}
let target = this.getStepTarget(stepConfig);
var config = {
placement: stepConfig.placement + '-start',
removeOnDestroy: true,
modifiers: {
flip: {
behaviour: flipBehavior,
},
arrow: {
element: '[data-role="arrow"]',
},
},
onCreate: function(data) {
recalculateArrowPosition(data);
},
onUpdate: function(data) {
recalculateArrowPosition(data);
},
};
let recalculateArrowPosition = function(data) {
let placement = data.placement.split('-')[0];
const isVertical = ['left', 'right'].indexOf(placement) !== -1;
const arrowElement = data.instance.popper.querySelector('[data-role="arrow"]');
const stepElement = $(data.instance.popper.querySelector('[data-role="flexitour-step"]'));
if (isVertical) {
let arrowHeight = parseFloat(window.getComputedStyle(arrowElement).height);
let arrowOffset = parseFloat(window.getComputedStyle(arrowElement).top);
let popperHeight = parseFloat(window.getComputedStyle(data.instance.popper).height);
let popperOffset = parseFloat(window.getComputedStyle(data.instance.popper).top);
let popperBorderWidth = parseFloat(stepElement.css('borderTopWidth'));
let popperBorderRadiusWidth = parseFloat(stepElement.css('borderTopLeftRadius')) * 2;
let arrowPos = arrowOffset + (arrowHeight / 2);
let maxPos = popperHeight + popperOffset - popperBorderWidth - popperBorderRadiusWidth;
let minPos = popperOffset + popperBorderWidth + popperBorderRadiusWidth;
if (arrowPos >= maxPos || arrowPos <= minPos) {
let newArrowPos = 0;
if (arrowPos > (popperHeight / 2)) {
newArrowPos = maxPos - arrowHeight;
} else {
newArrowPos = minPos + arrowHeight;
}
$(arrowElement).css('top', newArrowPos);
}
} else {
let arrowWidth = parseFloat(window.getComputedStyle(arrowElement).width);
let arrowOffset = parseFloat(window.getComputedStyle(arrowElement).left);
let popperWidth = parseFloat(window.getComputedStyle(data.instance.popper).width);
let popperOffset = parseFloat(window.getComputedStyle(data.instance.popper).left);
let popperBorderWidth = parseFloat(stepElement.css('borderTopWidth'));
let popperBorderRadiusWidth = parseFloat(stepElement.css('borderTopLeftRadius')) * 2;
let arrowPos = arrowOffset + (arrowWidth / 2);
let maxPos = popperWidth + popperOffset - popperBorderWidth - popperBorderRadiusWidth;
let minPos = popperOffset + popperBorderWidth + popperBorderRadiusWidth;
if (arrowPos >= maxPos || arrowPos <= minPos) {
let newArrowPos = 0;
if (arrowPos > (popperWidth / 2)) {
newArrowPos = maxPos - arrowWidth;
} else {
newArrowPos = minPos + arrowWidth;
}
$(arrowElement).css('left', newArrowPos);
}
}
};
let background = $('[data-flexitour="step-background"]');
if (background.length) {
target = background;
}
this.currentStepPopper = new Popper(target, content[0], config);
return this;
}
/**
* For left/right placement, checks that there is room for the step at current window size.
*
* If there is not enough room, changes placement to 'top'.
*
* @method recalculatePlacement
* @param {Object} stepConfig The step configuration of the step
* @return {String} The placement after recalculate
*/
recalculatePlacement(stepConfig) {
const buffer = 10;
const arrowWidth = 16;
let target = this.getStepTarget(stepConfig);
let widthContent = this.currentStepNode.width() + arrowWidth;
let targetOffsetLeft = target.offset().left - buffer;
let targetOffsetRight = target.offset().left + target.width() + buffer;
let placement = stepConfig.placement;
if (['left', 'right'].indexOf(placement) !== -1) {
if ((targetOffsetLeft < (widthContent + buffer)) &&
((targetOffsetRight + widthContent + buffer) > document.documentElement.clientWidth)) {
placement = 'top';
}
}
return placement;
}
/**
* Add the backdrop.
*
* @method positionBackdrop
* @param {Object} stepConfig The step configuration of the step
* @chainable
* @return {Object} this.
*/
positionBackdrop(stepConfig) {
if (stepConfig.backdrop) {
this.currentStepConfig.hasBackdrop = true;
let backdrop = $('<div data-flexitour="backdrop"></div>');
if (stepConfig.zIndex) {
if (stepConfig.attachPoint === 'append') {
stepConfig.attachTo.append(backdrop);
} else {
backdrop.insertAfter(stepConfig.attachTo);
}
} else {
$('body').append(backdrop);
}
if (this.isStepActuallyVisible(stepConfig)) {
// The step has a visible target.
// Punch a hole through the backdrop.
let background = $('<div data-flexitour="step-background"></div>');
let targetNode = this.getStepTarget(stepConfig);
let buffer = 10;
let colorNode = targetNode;
if (buffer) {
colorNode = $('body');
}
background.css({
width: targetNode.outerWidth() + buffer + buffer,
height: targetNode.outerHeight() + buffer + buffer,
left: targetNode.offset().left - buffer,
top: targetNode.offset().top - buffer,
backgroundColor: this.calculateInherittedBackgroundColor(colorNode),
});
if (targetNode.offset().left < buffer) {
background.css({
width: targetNode.outerWidth() + targetNode.offset().left + buffer,
left: targetNode.offset().left,
});
}
if (targetNode.offset().top < buffer) {
background.css({
height: targetNode.outerHeight() + targetNode.offset().top + buffer,
top: targetNode.offset().top,
});
}
let targetRadius = targetNode.css('borderRadius');
if (targetRadius && targetRadius !== $('body').css('borderRadius')) {
background.css('borderRadius', targetRadius);
}
let targetPosition = this.calculatePosition(targetNode);
if (targetPosition === 'fixed') {
background.css('top', 0);
} else if (targetPosition === 'absolute') {
background.css('position', 'fixed');
}
let fader = background.clone();
fader.css({
backgroundColor: backdrop.css('backgroundColor'),
opacity: backdrop.css('opacity'),
});
fader.attr('data-flexitour', 'step-background-fader');
if (stepConfig.zIndex) {
if (stepConfig.attachPoint === 'append') {
stepConfig.attachTo.append(background);
} else {
fader.insertAfter(stepConfig.attachTo);
background.insertAfter(stepConfig.attachTo);
}
} else {
$('body').append(fader);
$('body').append(background);
}
// Add the backdrop data to the actual target.
// This is the part which actually does the work.
targetNode.attr('data-flexitour', 'step-backdrop');
if (stepConfig.zIndex) {
backdrop.css('zIndex', stepConfig.zIndex);
background.css('zIndex', stepConfig.zIndex + 1);
targetNode.css('zIndex', stepConfig.zIndex + 2);
}
fader.fadeOut('2000', function() {
$(this).remove();
});
}
}
return this;
}
/**
* Calculate the inheritted z-index.
*
* @method calculateZIndex
* @param {jQuery} elem The element to calculate z-index for
* @return {Number} Calculated z-index
*/
calculateZIndex(elem) {
elem = $(elem);
while (elem.length && elem[0] !== document) {
// Ignore z-index if position is set to a value where z-index is ignored by the browser
// This makes behavior of this function consistent across browsers
// WebKit always returns auto if the element is positioned.
let position = elem.css("position");
if (position === "absolute" || position === "relative" || position === "fixed") {
// IE returns 0 when zIndex is not specified
// other browsers return a string
// we ignore the case of nested elements with an explicit value of 0
// <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
let value = parseInt(elem.css("zIndex"), 10);
if (!isNaN(value) && value !== 0) {
return value;
}
}
elem = elem.parent();
}
return 0;
}
/**
* Calculate the inheritted background colour.
*
* @method calculateInherittedBackgroundColor
* @param {jQuery} elem The element to calculate colour for
* @return {String} Calculated background colour
*/
calculateInherittedBackgroundColor(elem) {
// Use a fake node to compare each element against.
let fakeNode = $('<div>').hide();
$('body').append(fakeNode);
let fakeElemColor = fakeNode.css('backgroundColor');
fakeNode.remove();
elem = $(elem);
while (elem.length && elem[0] !== document) {
let color = elem.css('backgroundColor');
if (color !== fakeElemColor) {
return color;
}
elem = elem.parent();
}
return null;
}
/**
* Calculate the inheritted position.
*
* @method calculatePosition
* @param {jQuery} elem The element to calculate position for
* @return {String} Calculated position
*/
calculatePosition(elem) {
elem = $(elem);
while (elem.length && elem[0] !== document) {
let position = elem.css('position');
if (position !== 'static') {
return position;
}
elem = elem.parent();
}
return null;
}
/**
* Perform accessibility changes for step shown.
*
* This will add aria-hidden="true" to all siblings and parent siblings.
*
* @method accessibilityShow
*/
accessibilityShow() {
let stateHolder = 'data-has-hidden';
let attrName = 'aria-hidden';
let hideFunction = function(child) {
let flexitourRole = child.data('flexitour');
if (flexitourRole) {
switch (flexitourRole) {
case 'container':
case 'target':
return;
}
}
let hidden = child.attr(attrName);
if (!hidden) {
child.attr(stateHolder, true);
Aria.hide(child);
}
};
this.currentStepNode.siblings().each(function(index, node) {
hideFunction($(node));
});
this.currentStepNode.parentsUntil('body').siblings().each(function(index, node) {
hideFunction($(node));
});
}
/**
* Perform accessibility changes for step hidden.
*
* This will remove any newly added aria-hidden="true".
*
* @method accessibilityHide
*/
accessibilityHide() {
let stateHolder = 'data-has-hidden';
let showFunction = function(child) {
let hidden = child.attr(stateHolder);
if (typeof hidden !== 'undefined') {
child.removeAttr(stateHolder);
Aria.unhide(child);
}
};
$('[' + stateHolder + ']').each(function(index, node) {
showFunction($(node));
});
}
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