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intro.js
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/**
* Intro.js v1.1.1
* https://github.com/usablica/intro.js
* MIT licensed
*
* Copyright (C) 2013 usabli.ca - A weekend project by Afshin Mehrabani (@afshinmeh)
*/
(function (root, factory) {
if (typeof exports === 'object') {
// CommonJS
factory(exports);
} else if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(['exports'], factory);
} else {
// Browser globals
factory(root);
}
} (this, function (exports) {
//Default config/variables
var VERSION = '1.1.1';
/**
* IntroJs main class
*
* @class IntroJs
*/
function IntroJs(obj) {
this._targetElement = obj;
this._options = {
/* Next button label in tooltip box */
nextLabel: 'Next →',
/* Previous button label in tooltip box */
prevLabel: '← Back',
/* Skip button label in tooltip box */
skipLabel: 'Skip',
/* Done button label in tooltip box */
doneLabel: 'Done',
/* Default tooltip box position */
tooltipPosition: 'bottom',
/* Next CSS class for tooltip boxes */
tooltipClass: '',
/* CSS class that is added to the helperLayer */
highlightClass: '',
/* Close introduction when pressing Escape button? */
exitOnEsc: true,
/* Close introduction when clicking on overlay layer? */
exitOnOverlayClick: true,
/* Show step numbers in introduction? */
showStepNumbers: true,
/* Let user use keyboard to navigate the tour? */
keyboardNavigation: true,
/* Show tour control buttons? */
showButtons: true,
/* Show tour bullets? */
showBullets: true,
/* Show tour progress? */
showProgress: false,
/* Scroll to highlighted element? */
scrollToElement: true,
/* Set the overlay opacity */
overlayOpacity: 0.8,
/* Precedence of positions, when auto is enabled */
positionPrecedence: ["bottom", "top", "right", "left"],
/* Disable an interaction with element? */
disableInteraction: false
};
}
/**
* Initiate a new introduction/guide from an element in the page
*
* @api private
* @method _introForElement
* @param {Object} targetElm
* @returns {Boolean} Success or not?
*/
function _introForElement(targetElm) {
var introItems = [],
self = this;
if (this._options.steps) {
//use steps passed programmatically
for (var i = 0, stepsLength = this._options.steps.length; i < stepsLength; i++) {
var currentItem = _cloneObject(this._options.steps[i]);
//set the step
currentItem.step = introItems.length + 1;
//use querySelector function only when developer used CSS selector
if (typeof(currentItem.element) === 'string') {
//grab the element with given selector from the page
currentItem.element = document.querySelector(currentItem.element);
}
//intro without element
if (typeof(currentItem.element) === 'undefined' || currentItem.element == null) {
var floatingElementQuery = document.querySelector(".introjsFloatingElement");
if (floatingElementQuery == null) {
floatingElementQuery = document.createElement('div');
floatingElementQuery.className = 'introjsFloatingElement';
document.body.appendChild(floatingElementQuery);
}
currentItem.element = floatingElementQuery;
currentItem.position = 'floating';
}
if (currentItem.element != null) {
introItems.push(currentItem);
}
}
} else {
//use steps from data-* annotations
var allIntroSteps = targetElm.querySelectorAll('*[data-intro]');
//if there's no element to intro
if (allIntroSteps.length < 1) {
return false;
}
//first add intro items with data-step
for (var i = 0, elmsLength = allIntroSteps.length; i < elmsLength; i++) {
var currentElement = allIntroSteps[i];
var step = parseInt(currentElement.getAttribute('data-step'), 10);
if (step > 0) {
introItems[step - 1] = {
element: currentElement,
intro: currentElement.getAttribute('data-intro'),
step: parseInt(currentElement.getAttribute('data-step'), 10),
tooltipClass: currentElement.getAttribute('data-tooltipClass'),
highlightClass: currentElement.getAttribute('data-highlightClass'),
position: currentElement.getAttribute('data-position') || this._options.tooltipPosition
};
}
}
//next add intro items without data-step
//todo: we need a cleanup here, two loops are redundant
var nextStep = 0;
for (var i = 0, elmsLength = allIntroSteps.length; i < elmsLength; i++) {
var currentElement = allIntroSteps[i];
if (currentElement.getAttribute('data-step') == null) {
while (true) {
if (typeof introItems[nextStep] == 'undefined') {
break;
} else {
nextStep++;
}
}
introItems[nextStep] = {
element: currentElement,
intro: currentElement.getAttribute('data-intro'),
step: nextStep + 1,
tooltipClass: currentElement.getAttribute('data-tooltipClass'),
highlightClass: currentElement.getAttribute('data-highlightClass'),
position: currentElement.getAttribute('data-position') || this._options.tooltipPosition
};
}
}
}
//removing undefined/null elements
var tempIntroItems = [];
for (var z = 0; z < introItems.length; z++) {
introItems[z] && tempIntroItems.push(introItems[z]); // copy non-empty values to the end of the array
}
introItems = tempIntroItems;
//Ok, sort all items with given steps
introItems.sort(function (a, b) {
return a.step - b.step;
});
//set it to the introJs object
self._introItems = introItems;
//add overlay layer to the page
if(_addOverlayLayer.call(self, targetElm)) {
//then, start the show
_nextStep.call(self);
var skipButton = targetElm.querySelector('.introjs-skipbutton'),
nextStepButton = targetElm.querySelector('.introjs-nextbutton');
self._onKeyDown = function(e) {
if (e.keyCode === 27 && self._options.exitOnEsc == true) {
//escape key pressed, exit the intro
//check if exit callback is defined
if (self._introExitCallback != undefined) {
self._introExitCallback.call(self);
}
_exitIntro.call(self, targetElm);
} else if(e.keyCode === 37) {
//left arrow
_previousStep.call(self);
} else if (e.keyCode === 39) {
//right arrow
_nextStep.call(self);
} else if (e.keyCode === 13) {
//srcElement === ie
var target = e.target || e.srcElement;
if (target && target.className.indexOf('introjs-prevbutton') > 0) {
//user hit enter while focusing on previous button
_previousStep.call(self);
} else if (target && target.className.indexOf('introjs-skipbutton') > 0) {
//user hit enter while focusing on skip button
if (self._introItems.length - 1 == self._currentStep && typeof (self._introCompleteCallback) === 'function') {
self._introCompleteCallback.call(self);
}
//check if any callback is defined
if (self._introExitCallback != undefined) {
self._introExitCallback.call(self);
}
_exitIntro.call(self, targetElm);
} else {
//default behavior for responding to enter
_nextStep.call(self);
}
//prevent default behaviour on hitting Enter, to prevent steps being skipped in some browsers
if(e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
}
};
self._onResize = function(e) {
_setHelperLayerPosition.call(self, document.querySelector('.introjs-helperLayer'));
_setHelperLayerPosition.call(self, document.querySelector('.introjs-tooltipReferenceLayer'));
};
if (window.addEventListener) {
if (this._options.keyboardNavigation) {
window.addEventListener('keydown', self._onKeyDown, true);
}
//for window resize
window.addEventListener('resize', self._onResize, true);
} else if (document.attachEvent) { //IE
if (this._options.keyboardNavigation) {
document.attachEvent('onkeydown', self._onKeyDown);
}
//for window resize
document.attachEvent('onresize', self._onResize);
}
}
return false;
}
/*
* makes a copy of the object
* @api private
* @method _cloneObject
*/
function _cloneObject(object) {
if (object == null || typeof (object) != 'object' || typeof (object.nodeType) != 'undefined') {
return object;
}
var temp = {};
for (var key in object) {
if (typeof (jQuery) != 'undefined' && object[key] instanceof jQuery) {
temp[key] = object[key];
} else {
temp[key] = _cloneObject(object[key]);
}
}
return temp;
}
/**
* Go to specific step of introduction
*
* @api private
* @method _goToStep
*/
function _goToStep(step) {
//because steps starts with zero
this._currentStep = step - 2;
if (typeof (this._introItems) !== 'undefined') {
_nextStep.call(this);
}
}
/**
* Go to next step on intro
*
* @api private
* @method _nextStep
*/
function _nextStep() {
this._direction = 'forward';
if (typeof (this._currentStep) === 'undefined') {
this._currentStep = 0;
} else {
++this._currentStep;
}
if ((this._introItems.length) <= this._currentStep) {
//end of the intro
//check if any callback is defined
if (typeof (this._introCompleteCallback) === 'function') {
this._introCompleteCallback.call(this);
}
_exitIntro.call(this, this._targetElement);
return;
}
var nextStep = this._introItems[this._currentStep];
if (typeof (this._introBeforeChangeCallback) !== 'undefined') {
this._introBeforeChangeCallback.call(this, nextStep.element);
}
_showElement.call(this, nextStep);
}
/**
* Go to previous step on intro
*
* @api private
* @method _nextStep
*/
function _previousStep() {
this._direction = 'backward';
if (this._currentStep === 0) {
return false;
}
var nextStep = this._introItems[--this._currentStep];
if (typeof (this._introBeforeChangeCallback) !== 'undefined') {
this._introBeforeChangeCallback.call(this, nextStep.element);
}
_showElement.call(this, nextStep);
}
/**
* Exit from intro
*
* @api private
* @method _exitIntro
* @param {Object} targetElement
*/
function _exitIntro(targetElement) {
//remove overlay layer from the page
var overlayLayer = targetElement.querySelector('.introjs-overlay');
//return if intro already completed or skipped
if (overlayLayer == null) {
return;
}
//for fade-out animation
overlayLayer.style.opacity = 0;
setTimeout(function () {
if (overlayLayer.parentNode) {
overlayLayer.parentNode.removeChild(overlayLayer);
}
}, 500);
//remove all helper layers
var helperLayer = targetElement.querySelector('.introjs-helperLayer');
if (helperLayer) {
helperLayer.parentNode.removeChild(helperLayer);
}
var referenceLayer = targetElement.querySelector('.introjs-tooltipReferenceLayer');
if (referenceLayer) {
referenceLayer.parentNode.removeChild(referenceLayer);
}
//remove disableInteractionLayer
var disableInteractionLayer = targetElement.querySelector('.introjs-disableInteraction');
if (disableInteractionLayer) {
disableInteractionLayer.parentNode.removeChild(disableInteractionLayer);
}
//remove intro floating element
var floatingElement = document.querySelector('.introjsFloatingElement');
if (floatingElement) {
floatingElement.parentNode.removeChild(floatingElement);
}
//remove `introjs-showElement` class from the element
var showElement = document.querySelector('.introjs-showElement');
if (showElement) {
showElement.className = showElement.className.replace(/introjs-[a-zA-Z]+/g, '').replace(/^\s+|\s+$/g, ''); // This is a manual trim.
}
//remove `introjs-fixParent` class from the elements
var fixParents = document.querySelectorAll('.introjs-fixParent');
if (fixParents && fixParents.length > 0) {
for (var i = fixParents.length - 1; i >= 0; i--) {
fixParents[i].className = fixParents[i].className.replace(/introjs-fixParent/g, '').replace(/^\s+|\s+$/g, '');
}
}
//clean listeners
if (window.removeEventListener) {
window.removeEventListener('keydown', this._onKeyDown, true);
} else if (document.detachEvent) { //IE
document.detachEvent('onkeydown', this._onKeyDown);
}
//set the step to zero
this._currentStep = undefined;
}
/**
* Render tooltip box in the page
*
* @api private
* @method _placeTooltip
* @param {HTMLElement} targetElement
* @param {HTMLElement} tooltipLayer
* @param {HTMLElement} arrowLayer
* @param {HTMLElement} helperNumberLayer
*/
function _placeTooltip(targetElement, tooltipLayer, arrowLayer, helperNumberLayer) {
var tooltipCssClass = '',
currentStepObj,
tooltipOffset,
targetOffset,
windowSize,
currentTooltipPosition;
//reset the old style
tooltipLayer.style.top = null;
tooltipLayer.style.right = null;
tooltipLayer.style.bottom = null;
tooltipLayer.style.left = null;
tooltipLayer.style.marginLeft = null;
tooltipLayer.style.marginTop = null;
arrowLayer.style.display = 'inherit';
if (typeof(helperNumberLayer) != 'undefined' && helperNumberLayer != null) {
helperNumberLayer.style.top = null;
helperNumberLayer.style.left = null;
}
//prevent error when `this._currentStep` is undefined
if (!this._introItems[this._currentStep]) return;
//if we have a custom css class for each step
currentStepObj = this._introItems[this._currentStep];
if (typeof (currentStepObj.tooltipClass) === 'string') {
tooltipCssClass = currentStepObj.tooltipClass;
} else {
tooltipCssClass = this._options.tooltipClass;
}
tooltipLayer.className = ('introjs-tooltip ' + tooltipCssClass).replace(/^\s+|\s+$/g, '');
currentTooltipPosition = this._introItems[this._currentStep].position;
if ((currentTooltipPosition == "auto" || this._options.tooltipPosition == "auto")) {
if (currentTooltipPosition != "floating") { // Floating is always valid, no point in calculating
currentTooltipPosition = _determineAutoPosition.call(this, targetElement, tooltipLayer, currentTooltipPosition);
}
}
targetOffset = _getOffset(targetElement);
tooltipOffset = _getOffset(tooltipLayer);
windowSize = _getWinSize();
switch (currentTooltipPosition) {
case 'top':
arrowLayer.className = 'introjs-arrow bottom';
var tooltipLayerStyleLeft = 15;
_checkRight(targetOffset, tooltipLayerStyleLeft, tooltipOffset, windowSize, tooltipLayer);
tooltipLayer.style.bottom = (targetOffset.height + 20) + 'px';
break;
case 'right':
tooltipLayer.style.left = (targetOffset.width + 20) + 'px';
if (targetOffset.top + tooltipOffset.height > windowSize.height) {
// In this case, right would have fallen below the bottom of the screen.
// Modify so that the bottom of the tooltip connects with the target
arrowLayer.className = "introjs-arrow left-bottom";
tooltipLayer.style.top = "-" + (tooltipOffset.height - targetOffset.height - 20) + "px";
} else {
arrowLayer.className = 'introjs-arrow left';
}
break;
case 'left':
if (this._options.showStepNumbers == true) {
tooltipLayer.style.top = '15px';
}
if (targetOffset.top + tooltipOffset.height > windowSize.height) {
// In this case, left would have fallen below the bottom of the screen.
// Modify so that the bottom of the tooltip connects with the target
tooltipLayer.style.top = "-" + (tooltipOffset.height - targetOffset.height - 20) + "px";
arrowLayer.className = 'introjs-arrow right-bottom';
} else {
arrowLayer.className = 'introjs-arrow right';
}
tooltipLayer.style.right = (targetOffset.width + 20) + 'px';
break;
case 'floating':
arrowLayer.style.display = 'none';
//we have to adjust the top and left of layer manually for intro items without element
tooltipLayer.style.left = '50%';
tooltipLayer.style.top = '50%';
tooltipLayer.style.marginLeft = '-' + (tooltipOffset.width / 2) + 'px';
tooltipLayer.style.marginTop = '-' + (tooltipOffset.height / 2) + 'px';
if (typeof(helperNumberLayer) != 'undefined' && helperNumberLayer != null) {
helperNumberLayer.style.left = '-' + ((tooltipOffset.width / 2) + 18) + 'px';
helperNumberLayer.style.top = '-' + ((tooltipOffset.height / 2) + 18) + 'px';
}
break;
case 'bottom-right-aligned':
arrowLayer.className = 'introjs-arrow top-right';
var tooltipLayerStyleRight = 0;
_checkLeft(targetOffset, tooltipLayerStyleRight, tooltipOffset, tooltipLayer);
tooltipLayer.style.top = (targetOffset.height + 20) + 'px';
break;
case 'bottom-middle-aligned':
arrowLayer.className = 'introjs-arrow top-middle';
var tooltipLayerStyleLeftRight = targetOffset.width / 2 - tooltipOffset.width / 2;
if (_checkLeft(targetOffset, tooltipLayerStyleLeftRight, tooltipOffset, tooltipLayer)) {
tooltipLayer.style.right = null;
_checkRight(targetOffset, tooltipLayerStyleLeftRight, tooltipOffset, windowSize, tooltipLayer);
}
tooltipLayer.style.top = (targetOffset.height + 20) + 'px';
break;
case 'bottom-left-aligned':
// Bottom-left-aligned is the same as the default bottom
case 'bottom':
// Bottom going to follow the default behavior
default:
arrowLayer.className = 'introjs-arrow top';
var tooltipLayerStyleLeft = 0;
_checkRight(targetOffset, tooltipLayerStyleLeft, tooltipOffset, windowSize, tooltipLayer);
tooltipLayer.style.top = (targetOffset.height + 20) + 'px';
break;
}
}
/**
* Set tooltip left so it doesn't go off the right side of the window
*
* @return boolean true, if tooltipLayerStyleLeft is ok. false, otherwise.
*/
function _checkRight(targetOffset, tooltipLayerStyleLeft, tooltipOffset, windowSize, tooltipLayer) {
if (targetOffset.left + tooltipLayerStyleLeft + tooltipOffset.width > windowSize.width) {
// off the right side of the window
tooltipLayer.style.left = (windowSize.width - tooltipOffset.width - targetOffset.left) + 'px';
return false;
}
tooltipLayer.style.left = tooltipLayerStyleLeft + 'px';
return true;
}
/**
* Set tooltip right so it doesn't go off the left side of the window
*
* @return boolean true, if tooltipLayerStyleRight is ok. false, otherwise.
*/
function _checkLeft(targetOffset, tooltipLayerStyleRight, tooltipOffset, tooltipLayer) {
if (targetOffset.left + targetOffset.width - tooltipLayerStyleRight - tooltipOffset.width < 0) {
// off the left side of the window
tooltipLayer.style.left = (-targetOffset.left) + 'px';
return false;
}
tooltipLayer.style.right = tooltipLayerStyleRight + 'px';
return true;
}
/**
* Determines the position of the tooltip based on the position precedence and availability
* of screen space.
*
* @param {Object} targetElement
* @param {Object} tooltipLayer
* @param {Object} desiredTooltipPosition
*
*/
function _determineAutoPosition(targetElement, tooltipLayer, desiredTooltipPosition) {
// Take a clone of position precedence. These will be the available
var possiblePositions = this._options.positionPrecedence.slice();
var windowSize = _getWinSize();
var tooltipHeight = _getOffset(tooltipLayer).height + 10;
var tooltipWidth = _getOffset(tooltipLayer).width + 20;
var targetOffset = _getOffset(targetElement);
// If we check all the possible areas, and there are no valid places for the tooltip, the element
// must take up most of the screen real estate. Show the tooltip floating in the middle of the screen.
var calculatedPosition = "floating";
// Check if the width of the tooltip + the starting point would spill off the right side of the screen
// If no, neither bottom or top are valid
if (targetOffset.left + tooltipWidth > windowSize.width || ((targetOffset.left + (targetOffset.width / 2)) - tooltipWidth) < 0) {
_removeEntry(possiblePositions, "bottom");
_removeEntry(possiblePositions, "top");
} else {
// Check for space below
if ((targetOffset.height + targetOffset.top + tooltipHeight) > windowSize.height) {
_removeEntry(possiblePositions, "bottom");
}
// Check for space above
if (targetOffset.top - tooltipHeight < 0) {
_removeEntry(possiblePositions, "top");
}
}
// Check for space to the right
if (targetOffset.width + targetOffset.left + tooltipWidth > windowSize.width) {
_removeEntry(possiblePositions, "right");
}
// Check for space to the left
if (targetOffset.left - tooltipWidth < 0) {
_removeEntry(possiblePositions, "left");
}
// At this point, our array only has positions that are valid. Pick the first one, as it remains in order
if (possiblePositions.length > 0) {
calculatedPosition = possiblePositions[0];
}
// If the requested position is in the list, replace our calculated choice with that
if (desiredTooltipPosition && desiredTooltipPosition != "auto") {
if (possiblePositions.indexOf(desiredTooltipPosition) > -1) {
calculatedPosition = desiredTooltipPosition;
}
}
return calculatedPosition;
}
/**
* Remove an entry from a string array if it's there, does nothing if it isn't there.
*
* @param {Array} stringArray
* @param {String} stringToRemove
*/
function _removeEntry(stringArray, stringToRemove) {
if (stringArray.indexOf(stringToRemove) > -1) {
stringArray.splice(stringArray.indexOf(stringToRemove), 1);
}
}
/**
* Update the position of the helper layer on the screen
*
* @api private
* @method _setHelperLayerPosition
* @param {Object} helperLayer
*/
function _setHelperLayerPosition(helperLayer) {
if (helperLayer) {
//prevent error when `this._currentStep` in undefined
if (!this._introItems[this._currentStep]) return;
var currentElement = this._introItems[this._currentStep],
elementPosition = _getOffset(currentElement.element),
widthHeightPadding = 10;
if (currentElement.position == 'floating') {
widthHeightPadding = 0;
}
//set new position to helper layer
helperLayer.setAttribute('style', 'width: ' + (elementPosition.width + widthHeightPadding) + 'px; ' +
'height:' + (elementPosition.height + widthHeightPadding) + 'px; ' +
'top:' + (elementPosition.top - 5) + 'px;' +
'left: ' + (elementPosition.left - 5) + 'px;');
}
}
/**
* Add disableinteraction layer and adjust the size and position of the layer
*
* @api private
* @method _disableInteraction
*/
function _disableInteraction () {
var disableInteractionLayer = document.querySelector('.introjs-disableInteraction');
if (disableInteractionLayer === null) {
disableInteractionLayer = document.createElement('div');
disableInteractionLayer.className = 'introjs-disableInteraction';
this._targetElement.appendChild(disableInteractionLayer);
}
_setHelperLayerPosition.call(this, disableInteractionLayer);
}
/**
* Show an element on the page
*
* @api private
* @method _showElement
* @param {Object} targetElement
*/
function _showElement(targetElement) {
if (typeof (this._introChangeCallback) !== 'undefined') {
this._introChangeCallback.call(this, targetElement.element);
}
var self = this,
oldHelperLayer = document.querySelector('.introjs-helperLayer'),
oldReferenceLayer = document.querySelector('.introjs-tooltipReferenceLayer'),
highlightClass = 'introjs-helperLayer',
elementPosition = _getOffset(targetElement.element);
//check for a current step highlight class
if (typeof (targetElement.highlightClass) === 'string') {
highlightClass += (' ' + targetElement.highlightClass);
}
//check for options highlight class
if (typeof (this._options.highlightClass) === 'string') {
highlightClass += (' ' + this._options.highlightClass);
}
if (oldHelperLayer != null) {
var oldHelperNumberLayer = oldReferenceLayer.querySelector('.introjs-helperNumberLayer'),
oldtooltipLayer = oldReferenceLayer.querySelector('.introjs-tooltiptext'),
oldArrowLayer = oldReferenceLayer.querySelector('.introjs-arrow'),
oldtooltipContainer = oldReferenceLayer.querySelector('.introjs-tooltip'),
skipTooltipButton = oldReferenceLayer.querySelector('.introjs-skipbutton'),
prevTooltipButton = oldReferenceLayer.querySelector('.introjs-prevbutton'),
nextTooltipButton = oldReferenceLayer.querySelector('.introjs-nextbutton');
//update or reset the helper highlight class
oldHelperLayer.className = highlightClass;
//hide the tooltip
oldtooltipContainer.style.opacity = 0;
oldtooltipContainer.style.display = "none";
if (oldHelperNumberLayer != null) {
var lastIntroItem = this._introItems[(targetElement.step - 2 >= 0 ? targetElement.step - 2 : 0)];
if (lastIntroItem != null && (this._direction == 'forward' && lastIntroItem.position == 'floating') || (this._direction == 'backward' && targetElement.position == 'floating')) {
oldHelperNumberLayer.style.opacity = 0;
}
}
//set new position to helper layer
_setHelperLayerPosition.call(self, oldHelperLayer);
_setHelperLayerPosition.call(self, oldReferenceLayer);
//remove `introjs-fixParent` class from the elements
var fixParents = document.querySelectorAll('.introjs-fixParent');
if (fixParents && fixParents.length > 0) {
for (var i = fixParents.length - 1; i >= 0; i--) {
fixParents[i].className = fixParents[i].className.replace(/introjs-fixParent/g, '').replace(/^\s+|\s+$/g, '');
};
}
//remove old classes
var oldShowElement = document.querySelector('.introjs-showElement');
oldShowElement.className = oldShowElement.className.replace(/introjs-[a-zA-Z]+/g, '').replace(/^\s+|\s+$/g, '');
//we should wait until the CSS3 transition is competed (it's 0.3 sec) to prevent incorrect `height` and `width` calculation
if (self._lastShowElementTimer) {
clearTimeout(self._lastShowElementTimer);
}
self._lastShowElementTimer = setTimeout(function() {
//set current step to the label
if (oldHelperNumberLayer != null) {
oldHelperNumberLayer.innerHTML = targetElement.step;
}
//set current tooltip text
oldtooltipLayer.innerHTML = targetElement.intro;
//set the tooltip position
oldtooltipContainer.style.display = "block";
_placeTooltip.call(self, targetElement.element, oldtooltipContainer, oldArrowLayer, oldHelperNumberLayer);
//change active bullet
oldReferenceLayer.querySelector('.introjs-bullets li > a.active').className = '';
oldReferenceLayer.querySelector('.introjs-bullets li > a[data-stepnumber="' + targetElement.step + '"]').className = 'active';
oldReferenceLayer.querySelector('.introjs-progress .introjs-progressbar').setAttribute('style', 'width:' + _getProgress.call(self) + '%;');
//show the tooltip
oldtooltipContainer.style.opacity = 1;
if (oldHelperNumberLayer) oldHelperNumberLayer.style.opacity = 1;
//reset button focus
if (nextTooltipButton.tabIndex === -1) {
//tabindex of -1 means we are at the end of the tour - focus on skip / done
skipTooltipButton.focus();
} else {
//still in the tour, focus on next
nextTooltipButton.focus();
}
}, 350);
} else {
var helperLayer = document.createElement('div'),
referenceLayer = document.createElement('div'),
arrowLayer = document.createElement('div'),
tooltipLayer = document.createElement('div'),
tooltipTextLayer = document.createElement('div'),
bulletsLayer = document.createElement('div'),
progressLayer = document.createElement('div'),
buttonsLayer = document.createElement('div');
helperLayer.className = highlightClass;
referenceLayer.className = 'introjs-tooltipReferenceLayer';
//set new position to helper layer
_setHelperLayerPosition.call(self, helperLayer);
_setHelperLayerPosition.call(self, referenceLayer);
//add helper layer to target element
this._targetElement.appendChild(helperLayer);
this._targetElement.appendChild(referenceLayer);
arrowLayer.className = 'introjs-arrow';
tooltipTextLayer.className = 'introjs-tooltiptext';
tooltipTextLayer.innerHTML = targetElement.intro;
bulletsLayer.className = 'introjs-bullets';
if (this._options.showBullets === false) {
bulletsLayer.style.display = 'none';
}
var ulContainer = document.createElement('ul');
for (var i = 0, stepsLength = this._introItems.length; i < stepsLength; i++) {
var innerLi = document.createElement('li');
var anchorLink = document.createElement('a');
anchorLink.onclick = function() {
self.goToStep(this.getAttribute('data-stepnumber'));
};
if (i === (targetElement.step-1)) anchorLink.className = 'active';
anchorLink.href = 'javascript:void(0);';
anchorLink.innerHTML = " ";
anchorLink.setAttribute('data-stepnumber', this._introItems[i].step);
innerLi.appendChild(anchorLink);
ulContainer.appendChild(innerLi);
}
bulletsLayer.appendChild(ulContainer);
progressLayer.className = 'introjs-progress';
if (this._options.showProgress === false) {
progressLayer.style.display = 'none';
}
var progressBar = document.createElement('div');
progressBar.className = 'introjs-progressbar';
progressBar.setAttribute('style', 'width:' + _getProgress.call(this) + '%;');
progressLayer.appendChild(progressBar);
buttonsLayer.className = 'introjs-tooltipbuttons';
if (this._options.showButtons === false) {
buttonsLayer.style.display = 'none';
}
tooltipLayer.className = 'introjs-tooltip';
tooltipLayer.appendChild(tooltipTextLayer);
tooltipLayer.appendChild(bulletsLayer);
tooltipLayer.appendChild(progressLayer);
//add helper layer number
if (this._options.showStepNumbers == true) {
var helperNumberLayer = document.createElement('span');
helperNumberLayer.className = 'introjs-helperNumberLayer';
helperNumberLayer.innerHTML = targetElement.step;
referenceLayer.appendChild(helperNumberLayer);
}
tooltipLayer.appendChild(arrowLayer);
referenceLayer.appendChild(tooltipLayer);
//next button
var nextTooltipButton = document.createElement('a');
nextTooltipButton.onclick = function() {
if (self._introItems.length - 1 != self._currentStep) {
_nextStep.call(self);
}
};
nextTooltipButton.href = 'javascript:void(0);';
nextTooltipButton.innerHTML = this._options.nextLabel;
//previous button
var prevTooltipButton = document.createElement('a');
prevTooltipButton.onclick = function() {
if (self._currentStep != 0) {
_previousStep.call(self);
}
};
prevTooltipButton.href = 'javascript:void(0);';
prevTooltipButton.innerHTML = this._options.prevLabel;
//skip button
var skipTooltipButton = document.createElement('a');
skipTooltipButton.className = 'introjs-button introjs-skipbutton';
skipTooltipButton.href = 'javascript:void(0);';
skipTooltipButton.innerHTML = this._options.skipLabel;
skipTooltipButton.onclick = function() {
if (self._introItems.length - 1 == self._currentStep && typeof (self._introCompleteCallback) === 'function') {
self._introCompleteCallback.call(self);
}
if (self._introItems.length - 1 != self._currentStep && typeof (self._introExitCallback) === 'function') {
self._introExitCallback.call(self);
}
_exitIntro.call(self, self._targetElement);
};
buttonsLayer.appendChild(skipTooltipButton);
//in order to prevent displaying next/previous button always
if (this._introItems.length > 1) {
buttonsLayer.appendChild(prevTooltipButton);
buttonsLayer.appendChild(nextTooltipButton);
}
tooltipLayer.appendChild(buttonsLayer);
//set proper position
_placeTooltip.call(self, targetElement.element, tooltipLayer, arrowLayer, helperNumberLayer);
}
//disable interaction
if (this._options.disableInteraction === true) {
_disableInteraction.call(self);
}
prevTooltipButton.removeAttribute('tabIndex');
nextTooltipButton.removeAttribute('tabIndex');
if (this._currentStep == 0 && this._introItems.length > 1) {
prevTooltipButton.className = 'introjs-button introjs-prevbutton introjs-disabled';
prevTooltipButton.tabIndex = '-1';
nextTooltipButton.className = 'introjs-button introjs-nextbutton';
skipTooltipButton.innerHTML = this._options.skipLabel;
} else if (this._introItems.length - 1 == this._currentStep || this._introItems.length == 1) {
skipTooltipButton.innerHTML = this._options.doneLabel;
prevTooltipButton.className = 'introjs-button introjs-prevbutton';
nextTooltipButton.className = 'introjs-button introjs-nextbutton introjs-disabled';
nextTooltipButton.tabIndex = '-1';
} else {
prevTooltipButton.className = 'introjs-button introjs-prevbutton';
nextTooltipButton.className = 'introjs-button introjs-nextbutton';
skipTooltipButton.innerHTML = this._options.skipLabel;
}
//Set focus on "next" button, so that hitting Enter always moves you onto the next step
nextTooltipButton.focus();
//add target element position style
targetElement.element.className += ' introjs-showElement';
var currentElementPosition = _getPropValue(targetElement.element, 'position');
if (currentElementPosition !== 'absolute' &&
currentElementPosition !== 'relative') {
//change to new intro item
targetElement.element.className += ' introjs-relativePosition';
}
var parentElm = targetElement.element.parentNode;
while (parentElm != null) {
if (parentElm.tagName.toLowerCase() === 'body') break;
//fix The Stacking Contenxt problem.
//More detail: https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Understanding_z_index/The_stacking_context
var zIndex = _getPropValue(parentElm, 'z-index');
var opacity = parseFloat(_getPropValue(parentElm, 'opacity'));
var transform = _getPropValue(parentElm, 'transform') || _getPropValue(parentElm, '-webkit-transform') || _getPropValue(parentElm, '-moz-transform') || _getPropValue(parentElm, '-ms-transform') || _getPropValue(parentElm, '-o-transform');
if (/[0-9]+/.test(zIndex) || opacity < 1 || (transform !== 'none' && transform !== undefined)) {
parentElm.className += ' introjs-fixParent';
}