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index.js
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index.js
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module.exports = (function imxQuery() {
/**
* get the total top offset of an object to the window object, not only to the next positioned object
* @param {object} targetNode
* @returns {Number}
*/
var offsetTop = function(targetNode) {
var stopElement = document.querySelector('body');
var offsetTopValue = targetNode.getBoundingClientRect().top - stopElement.getBoundingClientRect().top;
return offsetTopValue;
};
/**
* get the total left offset of an object to the window object, not only to the next positioned object
* @param {object} targetNode
* @returns {Number}
*/
var offsetLeft = function(targetNode) {
var stopElement = document.querySelector('body');
var offsetLeftValue = targetNode.getBoundingClientRect().left - stopElement.getBoundingClientRect().left;
return offsetLeftValue;
};
/**
* animated scrolling to a specific position
* @param {int} positionX
* @param {int} positionY
* @param {int} duration
* @returns null
*/
var scrollTo = function(positionX, positionY, duration) {
var _getCurrentScrollPositions = function() {
return {
x: window.pageXOffset,
y: window.pageYOffset
};
};
var _isTargetPositionReached = function() {
var currentScrollPosition = _getCurrentScrollPositions();
var flags = {
x: false,
y: false
};
if(scrollSteps.x < 0) {
if(currentScrollPosition.x + scrollSteps.x <= positionX) {
flags.x = true;
}
}else {
if(currentScrollPosition.x + scrollSteps.x >= positionX) {
flags.x = true;
}
}
if(scrollSteps.y < 0) {
if(currentScrollPosition.y + scrollSteps.y <= positionY) {
flags.y = true;
}
}else {
if(currentScrollPosition.y + scrollSteps.y >= positionY) {
flags.y = true;
}
}
if(flags.x && flags.y) {
return true;
}else {
return false;
}
};
var intervalGap = 15;
var currentScrollPosition = _getCurrentScrollPositions();
var scrollSteps = {
x: (positionX - currentScrollPosition.x) / (duration / intervalGap),
y: (positionY - currentScrollPosition.y) / (duration / intervalGap)
};
var scrollInterval = setInterval(function() {
if(_isTargetPositionReached()) {
clearInterval(scrollInterval);
window.scrollTo(positionX, positionY);
}else {
window.scrollBy(scrollSteps.x, scrollSteps.y);
}
}, intervalGap);
};
/**
* animated scrolling inside an element
* @param {int} positionX
* @param {int} positionY
* @param {int} duration
* @param {HTMLElement} target
* @returns null
*/
var scrollElementTo = function(positionX, positionY, duration, target) {
var _getCurrentScrollPositions = function() {
return {
x: target.scrollLeft,
y: target.scrollTop
};
};
var _isTargetPositionReached = function() {
var currentScrollPosition = _getCurrentScrollPositions();
var flags = {
x: false,
y: false
};
if(scrollSteps.x < 0) {
if(currentScrollPosition.x + scrollSteps.x <= positionX) {
flags.x = true;
}
}else {
if(currentScrollPosition.x + scrollSteps.x >= positionX) {
flags.x = true;
}
}
if(scrollSteps.y < 0) {
if(currentScrollPosition.y + scrollSteps.y <= positionY) {
flags.y = true;
}
}else {
if(currentScrollPosition.y + scrollSteps.y >= positionY) {
flags.y = true;
}
}
if(flags.x && flags.y) {
return true;
}else {
return false;
}
};
var intervalGap = 15;
var currentScrollPosition = _getCurrentScrollPositions();
var scrollSteps = {
x: (positionX - currentScrollPosition.x) / (duration / intervalGap),
y: (positionY - currentScrollPosition.y) / (duration / intervalGap)
};
var scrollInterval = setInterval(function() {
if(_isTargetPositionReached()) {
clearInterval(scrollInterval);
target.scrollLeft = positionX;
target.scrollTop += positionY;
}else {
target.scrollLeft += scrollSteps.x;
target.scrollTop += scrollSteps.y;
}
}, intervalGap);
};
/**
* wrapper to access html5 data set (use this for ie10 compatibility)
* @param {htlmnode} object
* @param {string} value
* @returns {mixed}
*/
var accessDataset = function(object, value) {
if(object.dataset) {
return object.dataset[value];
}else {
return object.getAttribute('data-' + value);
}
};
/**
* extend an object with another object, adding missing fields, overwriting existing fields
* @param {object} objectForExtension
* @param {object} extensionObject
* @returns {object}
*/
var extendObject = function(objectForExtension, extensionObject) {
for(var property in extensionObject) {
if(!objectForExtension.hasOwnProperty(property)) {
objectForExtension[property] = extensionObject[property];
}
}
return objectForExtension;
};
var documentReady = function(callback) {
let checkLess = false;
if(typeof (less) !== 'undefined') {
if(typeof (less.pageLoadFinished) === 'object') {
checkLess = true;
}
}
var lessComplete = function() {
if(checkLess) {
less.pageLoadFinished.then(() => {
setTimeout(callback);
});
}else {
setTimeout(callback);
}
};
var loadComplete = function() {
document.removeEventListener('DOMContentLoaded', loadComplete);
window.removeEventListener('load', loadComplete);
lessComplete();
};
if(document.readyState === 'complete') {
lessComplete();
}else {
document.addEventListener('DOMContentLoaded', loadComplete);
window.addEventListener('load', loadComplete);
}
};
return {
offsetTop: offsetTop,
offsetLeft: offsetLeft,
scrollTo: scrollTo,
scrollElementTo: scrollElementTo,
accessDataset: accessDataset,
extendObject: extendObject,
documentReady: documentReady
};
})();