Your IP : 216.73.217.79
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>10th_young_professionals</title>
<style id="applicationStylesheet" type="text/css">
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--web-view-name: 10th_young_professionals;
--web-view-id: n_0th_young_professionals;
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--web-enable-deep-linking: true;
}
:root {
--web-view-ids: n_0th_young_professionals;
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* {
margin: 0;
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position: absolute;
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left: 41px;
top: 363px;
position: absolute;
overflow: visible;
width: 714px;
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text-align: center;
font-family: Verdana;
font-style: normal;
font-weight: bold;
font-size: 26px;
color: rgba(25,54,96,1);
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#The_10th_CESA_Young_Profession {
left: 15px;
top: 445px;
position: absolute;
overflow: visible;
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font-family: Verdana;
font-style: normal;
font-weight: normal;
font-size: 14px;
color: rgba(25,54,96,1);
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position: absolute;
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font-family: Helvetica Neue;
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font-weight: bold;
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color: rgba(112,112,112,1);
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position: absolute;
width: 360px;
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left: 424px;
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fill: rgba(240,240,240,1);
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position: absolute;
overflow: visible;
width: 800px;
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left: 0px;
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#Follow_us_on_Social_Media {
left: 292px;
top: 241px;
position: absolute;
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width: 217px;
white-space: nowrap;
text-align: left;
font-family: Helvetica Neue;
font-style: normal;
font-weight: bold;
font-size: 17px;
color: rgba(1,4,37,1);
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width: 160px;
height: 47px;
left: 161px;
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overflow: visible;
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#Screenshot_2022-03-02_at_20213 {
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position: absolute;
width: 158px;
height: 47px;
left: 641px;
top: 276px;
overflow: visible;
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</style>
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///////////////////////////////////////
// INITIALIZATION
///////////////////////////////////////
/**
* Functionality for scaling, showing by media query, and navigation between multiple pages on a single page.
* Code subject to change.
**/
if (window.console==null) { window["console"] = { log : function() {} } }; // some browsers do not set console
var Application = function() {
// event constants
this.prefix = "--web-";
this.NAVIGATION_CHANGE = "viewChange";
this.VIEW_NOT_FOUND = "viewNotFound";
this.VIEW_CHANGE = "viewChange";
this.VIEW_CHANGING = "viewChanging";
this.STATE_NOT_FOUND = "stateNotFound";
this.APPLICATION_COMPLETE = "applicationComplete";
this.APPLICATION_RESIZE = "applicationResize";
this.SIZE_STATE_NAME = "data-is-view-scaled";
this.STATE_NAME = this.prefix + "state";
this.lastTrigger = null;
this.lastView = null;
this.lastState = null;
this.lastOverlay = null;
this.currentView = null;
this.currentState = null;
this.currentOverlay = null;
this.currentQuery = {index: 0, rule: null, mediaText: null, id: null};
this.inclusionQuery = "(min-width: 0px)";
this.exclusionQuery = "none and (min-width: 99999px)";
this.LastModifiedDateLabelName = "LastModifiedDateLabel";
this.viewScaleSliderId = "ViewScaleSliderInput";
this.pageRefreshedName = "showPageRefreshedNotification";
this.application = null;
this.applicationStylesheet = null;
this.showByMediaQuery = null;
this.mediaQueryDictionary = {};
this.viewsDictionary = {};
this.addedViews = [];
this.viewStates = [];
this.views = [];
this.viewIds = [];
this.viewQueries = {};
this.overlays = {};
this.overlayIds = [];
this.numberOfViews = 0;
this.verticalPadding = 0;
this.horizontalPadding = 0;
this.stateName = null;
this.viewScale = 1;
this.viewLeft = 0;
this.viewTop = 0;
this.horizontalScrollbarsNeeded = false;
this.verticalScrollbarsNeeded = false;
// view settings
this.showUpdateNotification = false;
this.showNavigationControls = false;
this.scaleViewsToFit = false;
this.scaleToFitOnDoubleClick = false;
this.actualSizeOnDoubleClick = false;
this.scaleViewsOnResize = false;
this.navigationOnKeypress = false;
this.showViewName = false;
this.enableDeepLinking = true;
this.refreshPageForChanges = false;
this.showRefreshNotifications = true;
// view controls
this.scaleViewSlider = null;
this.lastModifiedLabel = null;
this.supportsPopState = false; // window.history.pushState!=null;
this.initialized = false;
// refresh properties
this.refreshDuration = 250;
this.lastModifiedDate = null;
this.refreshRequest = null;
this.refreshInterval = null;
this.refreshContent = null;
this.refreshContentSize = null;
this.refreshCheckContent = false;
this.refreshCheckContentSize = false;
var self = this;
self.initialize = function(event) {
var view = self.getVisibleView();
var views = self.getVisibleViews();
if (view==null) view = self.getInitialView();
self.collectViews();
self.collectOverlays();
self.collectMediaQueries();
for (let index = 0; index < views.length; index++) {
var view = views[index];
self.setViewOptions(view);
self.setViewVariables(view);
self.centerView(view);
}
// sometimes the body size is 0 so we call this now and again later
if (self.initialized) {
window.addEventListener(self.NAVIGATION_CHANGE, self.viewChangeHandler);
window.addEventListener("keyup", self.keypressHandler);
window.addEventListener("keypress", self.keypressHandler);
window.addEventListener("resize", self.resizeHandler);
window.document.addEventListener("dblclick", self.doubleClickHandler);
if (self.supportsPopState) {
window.addEventListener('popstate', self.popStateHandler);
}
else {
window.addEventListener('hashchange', self.hashChangeHandler);
}
// we are ready to go
window.dispatchEvent(new Event(self.APPLICATION_COMPLETE));
}
if (self.initialized==false) {
if (self.enableDeepLinking) {
self.syncronizeViewToURL();
}
if (self.refreshPageForChanges) {
self.setupRefreshForChanges();
}
self.initialized = true;
}
if (self.scaleViewsToFit) {
self.viewScale = self.scaleViewToFit(view);
if (self.viewScale<0) {
setTimeout(self.scaleViewToFit, 500, view);
}
}
else if (view) {
self.viewScale = self.getViewScaleValue(view);
self.centerView(view);
self.updateSliderValue(self.viewScale);
}
else {
// no view found
}
if (self.showUpdateNotification) {
self.showNotification();
}
//"addEventListener" in window ? null : window.addEventListener = window.attachEvent;
//"addEventListener" in document ? null : document.addEventListener = document.attachEvent;
}
///////////////////////////////////////
// AUTO REFRESH
///////////////////////////////////////
self.setupRefreshForChanges = function() {
self.refreshRequest = new XMLHttpRequest();
if (!self.refreshRequest) {
return false;
}
// get document start values immediately
self.requestRefreshUpdate();
}
/**
* Attempt to check the last modified date by the headers
* or the last modified property from the byte array (experimental)
**/
self.requestRefreshUpdate = function() {
var url = document.location.href;
var protocol = window.location.protocol;
var method;
try {
if (self.refreshCheckContentSize) {
self.refreshRequest.open('HEAD', url, true);
}
else if (self.refreshCheckContent) {
self.refreshContent = document.documentElement.outerHTML;
self.refreshRequest.open('GET', url, true);
self.refreshRequest.responseType = "text";
}
else {
// get page last modified date for the first call to compare to later
if (self.lastModifiedDate==null) {
// File system does not send headers in FF so get blob if possible
if (protocol=="file:") {
self.refreshRequest.open("GET", url, true);
self.refreshRequest.responseType = "blob";
}
else {
self.refreshRequest.open("HEAD", url, true);
self.refreshRequest.responseType = "blob";
}
self.refreshRequest.onload = self.refreshOnLoadOnceHandler;
// In some browsers (Chrome & Safari) this error occurs at send:
//
// Chrome - Access to XMLHttpRequest at 'file:///index.html' from origin 'null'
// has been blocked by CORS policy:
// Cross origin requests are only supported for protocol schemes:
// http, data, chrome, chrome-extension, https.
//
// Safari - XMLHttpRequest cannot load file:///Users/user/Public/index.html. Cross origin requests are only supported for HTTP.
//
// Solution is to run a local server, set local permissions or test in another browser
self.refreshRequest.send(null);
// In MS browsers the following behavior occurs possibly due to an AJAX call to check last modified date:
//
// DOM7011: The code on this page disabled back and forward caching.
// In Brave (Chrome) error when on the server
// index.js:221 HEAD https://www.example.com/ net::ERR_INSUFFICIENT_RESOURCES
// self.refreshRequest.send(null);
}
else {
self.refreshRequest = new XMLHttpRequest();
self.refreshRequest.onreadystatechange = self.refreshHandler;
self.refreshRequest.ontimeout = function() {
self.log("Couldn't find page to check for updates");
}
var method;
if (protocol=="file:") {
method = "GET";
}
else {
method = "HEAD";
}
//refreshRequest.open('HEAD', url, true);
self.refreshRequest.open(method, url, true);
self.refreshRequest.responseType = "blob";
self.refreshRequest.send(null);
}
}
}
catch (error) {
self.log("Refresh failed for the following reason:")
self.log(error);
}
}
self.refreshHandler = function() {
var contentSize;
try {
if (self.refreshRequest.readyState === XMLHttpRequest.DONE) {
if (self.refreshRequest.status === 2 ||
self.refreshRequest.status === 200) {
var pageChanged = false;
self.updateLastModifiedLabel();
if (self.refreshCheckContentSize) {
var lastModifiedHeader = self.refreshRequest.getResponseHeader("Last-Modified");
contentSize = self.refreshRequest.getResponseHeader("Content-Length");
//lastModifiedDate = refreshRequest.getResponseHeader("Last-Modified");
var headers = self.refreshRequest.getAllResponseHeaders();
var hasContentHeader = headers.indexOf("Content-Length")!=-1;
if (hasContentHeader) {
contentSize = self.refreshRequest.getResponseHeader("Content-Length");
// size has not been set yet
if (self.refreshContentSize==null) {
self.refreshContentSize = contentSize;
// exit and let interval call this method again
return;
}
if (contentSize!=self.refreshContentSize) {
pageChanged = true;
}
}
}
else if (self.refreshCheckContent) {
if (self.refreshRequest.responseText!=self.refreshContent) {
pageChanged = true;
}
}
else {
lastModifiedHeader = self.getLastModified(self.refreshRequest);
if (self.lastModifiedDate!=lastModifiedHeader) {
self.log("lastModifiedDate:" + self.lastModifiedDate + ",lastModifiedHeader:" +lastModifiedHeader);
pageChanged = true;
}
}
if (pageChanged) {
clearInterval(self.refreshInterval);
self.refreshUpdatedPage();
return;
}
}
else {
self.log('There was a problem with the request.');
}
}
}
catch( error ) {
//console.log('Caught Exception: ' + error);
}
}
self.refreshOnLoadOnceHandler = function(event) {
// get the last modified date
if (self.refreshRequest.response) {
self.lastModifiedDate = self.getLastModified(self.refreshRequest);
if (self.lastModifiedDate!=null) {
if (self.refreshInterval==null) {
self.refreshInterval = setInterval(self.requestRefreshUpdate, self.refreshDuration);
}
}
else {
self.log("Could not get last modified date from the server");
}
}
}
self.refreshUpdatedPage = function() {
if (self.showRefreshNotifications) {
var date = new Date().setTime((new Date().getTime()+10000));
document.cookie = encodeURIComponent(self.pageRefreshedName) + "=true" + "; max-age=6000;" + " path=/";
}
document.location.reload(true);
}
self.showNotification = function(duration) {
var notificationID = self.pageRefreshedName+"ID";
var notification = document.getElementById(notificationID);
if (duration==null) duration = 4000;
if (notification!=null) {return;}
notification = document.createElement("div");
notification.id = notificationID;
notification.textContent = "PAGE UPDATED";
var styleRule = ""
styleRule = "position: fixed; padding: 7px 16px 6px 16px; font-family: Arial, sans-serif; font-size: 10px; font-weight: bold; left: 50%;";
styleRule += "top: 20px; background-color: rgba(0,0,0,.5); border-radius: 12px; color:rgb(235, 235, 235); transition: all 2s linear;";
styleRule += "transform: translateX(-50%); letter-spacing: .5px; filter: drop-shadow(2px 2px 6px rgba(0, 0, 0, .1)); cursor: pointer";
notification.setAttribute("style", styleRule);
notification.className = "PageRefreshedClass";
notification.addEventListener("click", function() {
notification.parentNode.removeChild(notification);
});
document.body.appendChild(notification);
setTimeout(function() {
notification.style.opacity = "0";
notification.style.filter = "drop-shadow( 0px 0px 0px rgba(0,0,0, .5))";
setTimeout(function() {
try {
notification.parentNode.removeChild(notification);
} catch(error) {}
}, duration)
}, duration);
document.cookie = encodeURIComponent(self.pageRefreshedName) + "=; max-age=1; path=/";
}
/**
* Get the last modified date from the header
* or file object after request has been received
**/
self.getLastModified = function(request) {
var date;
// file protocol - FILE object with last modified property
if (request.response && request.response.lastModified) {
date = request.response.lastModified;
}
// http protocol - check headers
if (date==null) {
date = request.getResponseHeader("Last-Modified");
}
return date;
}
self.updateLastModifiedLabel = function() {
var labelValue = "";
if (self.lastModifiedLabel==null) {
self.lastModifiedLabel = document.getElementById("LastModifiedLabel");
}
if (self.lastModifiedLabel) {
var seconds = parseInt(((new Date().getTime() - Date.parse(document.lastModified)) / 1000 / 60) * 100 + "");
var minutes = 0;
var hours = 0;
if (seconds < 60) {
seconds = Math.floor(seconds/10)*10;
labelValue = seconds + " seconds";
}
else {
minutes = parseInt((seconds/60) + "");
if (minutes>60) {
hours = parseInt((seconds/60/60) +"");
labelValue += hours==1 ? " hour" : " hours";
}
else {
labelValue = minutes+"";
labelValue += minutes==1 ? " minute" : " minutes";
}
}
if (seconds<10) {
labelValue = "Updated now";
}
else {
labelValue = "Updated " + labelValue + " ago";
}
if (self.lastModifiedLabel.firstElementChild) {
self.lastModifiedLabel.firstElementChild.textContent = labelValue;
}
else if ("textContent" in self.lastModifiedLabel) {
self.lastModifiedLabel.textContent = labelValue;
}
}
}
self.getShortString = function(string, length) {
if (length==null) length = 30;
string = string!=null ? string.substr(0, length).replace(/\n/g, "") : "[String is null]";
return string;
}
self.getShortNumber = function(value, places) {
if (places==null || places<1) places = 4;
value = Math.round(value * Math.pow(10,places)) / Math.pow(10, places);
return value;
}
///////////////////////////////////////
// NAVIGATION CONTROLS
///////////////////////////////////////
self.updateViewLabel = function() {
var viewNavigationLabel = document.getElementById("ViewNavigationLabel");
var view = self.getVisibleView();
var viewIndex = view ? self.getViewIndex(view) : -1;
var viewName = view ? self.getViewPreferenceValue(view, self.prefix + "view-name") : null;
var viewId = view ? view.id : null;
if (viewNavigationLabel && view) {
if (viewName && viewName.indexOf('"')!=-1) {
viewName = viewName.replace(/"/g, "");
}
if (self.showViewName) {
viewNavigationLabel.textContent = viewName;
self.setTooltip(viewNavigationLabel, viewIndex + 1 + " of " + self.numberOfViews);
}
else {
viewNavigationLabel.textContent = viewIndex + 1 + " of " + self.numberOfViews;
self.setTooltip(viewNavigationLabel, viewName);
}
}
}
self.updateURL = function(view) {
view = view == null ? self.getVisibleView() : view;
var viewId = view ? view.id : null
var viewFragment = view ? "#"+ viewId : null;
if (viewId && self.viewIds.length>1 && self.enableDeepLinking) {
if (self.supportsPopState==false) {
self.setFragment(viewId);
}
else {
if (viewFragment!=window.location.hash) {
if (window.location.hash==null) {
window.history.replaceState({name:viewId}, null, viewFragment);
}
else {
window.history.pushState({name:viewId}, null, viewFragment);
}
}
}
}
}
self.updateURLState = function(view, stateName) {
stateName = view && (stateName=="" || stateName==null) ? self.getStateNameByViewId(view.id) : stateName;
if (self.supportsPopState==false) {
self.setFragment(stateName);
}
else {
if (stateName!=window.location.hash) {
if (window.location.hash==null) {
window.history.replaceState({name:view.viewId}, null, stateName);
}
else {
window.history.pushState({name:view.viewId}, null, stateName);
}
}
}
}
self.setFragment = function(value) {
window.location.hash = "#" + value;
}
self.setTooltip = function(element, value) {
// setting the tooltip in edge causes a page crash on hover
if (/Edge/.test(navigator.userAgent)) { return; }
if ("title" in element) {
element.title = value;
}
}
self.getStylesheetRules = function(styleSheet) {
try {
if (styleSheet) return styleSheet.cssRules || styleSheet.rules;
return document.styleSheets[0]["cssRules"] || document.styleSheets[0]["rules"];
}
catch (error) {
// ERRORS:
// SecurityError: The operation is insecure.
// Errors happen when script loads before stylesheet or loading an external css locally
// InvalidAccessError: A parameter or an operation is not supported by the underlying object
// Place script after stylesheet
console.log(error);
if (error.toString().indexOf("The operation is insecure")!=-1) {
console.log("Load the stylesheet before the script or load the stylesheet inline until it can be loaded on a server")
}
return [];
}
}
/**
* If single page application hide all of the views.
* @param {Number} selectedIndex if provided shows the view at index provided
**/
self.hideViews = function(selectedIndex, animation) {
var rules = self.getStylesheetRules();
var queryIndex = 0;
var numberOfRules = rules!=null ? rules.length : 0;
// loop through rules and hide media queries except selected
for (var i=0;i<numberOfRules;i++) {
var rule = rules[i];
var cssText = rule && rule.cssText;
if (rule.media!=null && cssText.match("--web-view-name:")) {
if (queryIndex==selectedIndex) {
self.currentQuery.mediaText = rule.conditionText;
self.currentQuery.index = selectedIndex;
self.currentQuery.rule = rule;
self.enableMediaQuery(rule);
}
else {
if (animation) {
self.fadeOut(rule)
}
else {
self.disableMediaQuery(rule);
}
}
queryIndex++;
}
}
self.numberOfViews = queryIndex;
self.updateViewLabel();
self.updateURL();
self.dispatchViewChange();
var view = self.getVisibleView();
var viewIndex = view ? self.getViewIndex(view) : -1;
return viewIndex==selectedIndex ? view : null;
}
/**
* If single page application hide all of the views.
* @param {HTMLElement} selectedView if provided shows the view passed in
**/
self.hideAllViews = function(selectedView, animation) {
var views = self.views;
var queryIndex = 0;
var numberOfViews = views!=null ? views.length : 0;
// loop through rules and hide media queries except selected
for (var i=0;i<numberOfViews;i++) {
var viewData = views[i];
var view = viewData && viewData.view;
var mediaRule = viewData && viewData.mediaRule;
if (view==selectedView) {
self.currentQuery.mediaText = mediaRule.conditionText;
self.currentQuery.index = queryIndex;
self.currentQuery.rule = mediaRule;
self.enableMediaQuery(mediaRule);
}
else {
if (animation) {
self.fadeOut(mediaRule)
}
else {
self.disableMediaQuery(mediaRule);
}
}
queryIndex++;
}
self.numberOfViews = queryIndex;
self.updateViewLabel();
self.updateURL();
self.dispatchViewChange();
var visibleView = self.getVisibleView();
return visibleView==selectedView ? selectedView : null;
}
/**
* Hide view
* @param {Object} view element to hide
**/
self.hideView = function(view) {
var rule = view ? self.mediaQueryDictionary[view.id] : null;
if (rule) {
self.disableMediaQuery(rule);
}
}
/**
* Hide overlay
* @param {Object} overlay element to hide
**/
self.hideOverlay = function(overlay) {
var rule = overlay ? self.mediaQueryDictionary[overlay.id] : null;
if (rule) {
self.disableMediaQuery(rule);
//if (self.showByMediaQuery) {
overlay.style.display = "none";
//}
}
}
/**
* Show the view by media query. Does not hide current views
* Sets view options by default
* @param {Object} view element to show
* @param {Boolean} setViewOptions sets view options if null or true
*/
self.showViewByMediaQuery = function(view, setViewOptions) {
var id = view ? view.id : null;
var query = id ? self.mediaQueryDictionary[id] : null;
var isOverlay = view ? self.isOverlay(view) : false;
setViewOptions = setViewOptions==null ? true : setViewOptions;
if (query) {
self.enableMediaQuery(query);
if (isOverlay && view && setViewOptions) {
self.setViewVariables(null, view);
}
else {
if (view && setViewOptions) self.setViewOptions(view);
if (view && setViewOptions) self.setViewVariables(view);
}
}
}
/**
* Show the view. Does not hide current views
*/
self.showView = function(view, setViewOptions) {
var id = view ? view.id : null;
var query = id ? self.mediaQueryDictionary[id] : null;
var display = null;
setViewOptions = setViewOptions==null ? true : setViewOptions;
if (query) {
self.enableMediaQuery(query);
if (view==null) view =self.getVisibleView();
if (view && setViewOptions) self.setViewOptions(view);
}
else if (id) {
display = window.getComputedStyle(view).getPropertyValue("display");
if (display=="" || display=="none") {
view.style.display = "block";
}
}
if (view) {
if (self.currentView!=null) {
self.lastView = self.currentView;
}
self.currentView = view;
}
}
self.showViewById = function(id, setViewOptions) {
var view = id ? self.getViewById(id) : null;
if (view) {
self.showView(view);
return;
}
self.log("View not found '" + id + "'");
}
self.getElementView = function(element) {
var view = element;
var viewFound = false;
while (viewFound==false || view==null) {
if (view && self.viewsDictionary[view.id]) {
return view;
}
view = view.parentNode;
}
}
/**
* Show overlay over view
* @param {Event | HTMLElement} event event or html element with styles applied
* @param {String} id id of view or view reference
* @param {Number} x x location
* @param {Number} y y location
*/
self.showOverlay = function(event, id, x, y) {
var overlay = id && typeof id === 'string' ? self.getViewById(id) : id ? id : null;
var query = overlay ? self.mediaQueryDictionary[overlay.id] : null;
var centerHorizontally = false;
var centerVertically = false;
var anchorLeft = false;
var anchorTop = false;
var anchorRight = false;
var anchorBottom = false;
var display = null;
var reparent = true;
var view = null;
if (overlay==null || overlay==false) {
self.log("Overlay not found, '"+ id + "'");
return;
}
// get enter animation - event target must have css variables declared
if (event) {
var button = event.currentTarget || event; // can be event or htmlelement
var buttonComputedStyles = getComputedStyle(button);
var actionTargetValue = buttonComputedStyles.getPropertyValue(self.prefix+"action-target").trim();
var animation = buttonComputedStyles.getPropertyValue(self.prefix+"animation").trim();
var isAnimated = animation!="";
var targetType = buttonComputedStyles.getPropertyValue(self.prefix+"action-type").trim();
var actionTarget = self.application ? null : self.getElement(actionTargetValue);
var actionTargetStyles = actionTarget ? actionTarget.style : null;
if (actionTargetStyles) {
actionTargetStyles.setProperty("animation", animation);
}
if ("stopImmediatePropagation" in event) {
event.stopImmediatePropagation();
}
}
if (self.application==false || targetType=="page") {
document.location.href = "./" + actionTargetValue;
return;
}
// remove any current overlays
if (self.currentOverlay) {
// act as switch if same button
if (self.currentOverlay==actionTarget || self.currentOverlay==null) {
if (self.lastTrigger==button) {
self.removeOverlay(isAnimated);
return;
}
}
else {
self.removeOverlay(isAnimated);
}
}
if (reparent) {
view = self.getElementView(button);
if (view) {
view.appendChild(overlay);
}
}
if (query) {
//self.setElementAnimation(overlay, null);
//overlay.style.animation = animation;
self.enableMediaQuery(query);
var display = overlay && overlay.style.display;
if (overlay && display=="" || display=="none") {
overlay.style.display = "block";
//self.setViewOptions(overlay);
}
// add animation defined in event target style declaration
if (animation && self.supportAnimations) {
self.fadeIn(overlay, false, animation);
}
}
else if (id) {
display = window.getComputedStyle(overlay).getPropertyValue("display");
if (display=="" || display=="none") {
overlay.style.display = "block";
}
// add animation defined in event target style declaration
if (animation && self.supportAnimations) {
self.fadeIn(overlay, false, animation);
}
}
// do not set x or y position if centering
var horizontal = self.prefix + "center-horizontally";
var vertical = self.prefix + "center-vertically";
var style = overlay.style;
var transform = [];
centerHorizontally = self.getIsStyleDefined(id, horizontal) ? self.getViewPreferenceBoolean(overlay, horizontal) : false;
centerVertically = self.getIsStyleDefined(id, vertical) ? self.getViewPreferenceBoolean(overlay, vertical) : false;
anchorLeft = self.getIsStyleDefined(id, "left");
anchorRight = self.getIsStyleDefined(id, "right");
anchorTop = self.getIsStyleDefined(id, "top");
anchorBottom = self.getIsStyleDefined(id, "bottom");
if (self.viewsDictionary[overlay.id] && self.viewsDictionary[overlay.id].styleDeclaration) {
style = self.viewsDictionary[overlay.id].styleDeclaration.style;
}
if (centerHorizontally) {
style.left = "50%";
style.transformOrigin = "0 0";
transform.push("translateX(-50%)");
}
else if (anchorRight && anchorLeft) {
style.left = x + "px";
}
else if (anchorRight) {
//style.right = x + "px";
}
else {
style.left = x + "px";
}
if (centerVertically) {
style.top = "50%";
transform.push("translateY(-50%)");
style.transformOrigin = "0 0";
}
else if (anchorTop && anchorBottom) {
style.top = y + "px";
}
else if (anchorBottom) {
//style.bottom = y + "px";
}
else {
style.top = y + "px";
}
if (transform.length) {
style.transform = transform.join(" ");
}
self.currentOverlay = overlay;
self.lastTrigger = button;
}
self.goBack = function() {
if (self.currentOverlay) {
self.removeOverlay();
}
else if (self.lastView) {
self.goToView(self.lastView.id);
}
}
self.removeOverlay = function(animate) {
var overlay = self.currentOverlay;
animate = animate===false ? false : true;
if (overlay) {
var style = overlay.style;
if (style.animation && self.supportAnimations && animate) {
self.reverseAnimation(overlay, true);
var duration = self.getAnimationDuration(style.animation, true);
setTimeout(function() {
self.setElementAnimation(overlay, null);
self.hideOverlay(overlay);
self.currentOverlay = null;
}, duration);
}
else {
self.setElementAnimation(overlay, null);
self.hideOverlay(overlay);
self.currentOverlay = null;
}
}
}
/**
* Reverse the animation and hide after
* @param {Object} target element with animation
* @param {Boolean} hide hide after animation ends
*/
self.reverseAnimation = function(target, hide) {
var lastAnimation = null;
var style = target.style;
style.animationPlayState = "paused";
lastAnimation = style.animation;
style.animation = null;
style.animationPlayState = "paused";
if (hide) {
//target.addEventListener("animationend", self.animationEndHideHandler);
var duration = self.getAnimationDuration(lastAnimation, true);
var isOverlay = self.isOverlay(target);
setTimeout(function() {
self.setElementAnimation(target, null);
if (isOverlay) {
self.hideOverlay(target);
}
else {
self.hideView(target);
}
}, duration);
}
setTimeout(function() {
style.animation = lastAnimation;
style.animationPlayState = "paused";
style.animationDirection = "reverse";
style.animationPlayState = "running";
}, 30);
}
self.animationEndHandler = function(event) {
var target = event.currentTarget;
self.dispatchEvent(new Event(event.type));
}
self.isOverlay = function(view) {
var result = view ? self.getViewPreferenceBoolean(view, self.prefix + "is-overlay") : false;
return result;
}
self.animationEndHideHandler = function(event) {
var target = event.currentTarget;
self.setViewVariables(null, target);
self.hideView(target);
target.removeEventListener("animationend", self.animationEndHideHandler);
}
self.animationEndShowHandler = function(event) {
var target = event.currentTarget;
target.removeEventListener("animationend", self.animationEndShowHandler);
}
self.setViewOptions = function(view) {
if (view) {
self.minimumScale = self.getViewPreferenceValue(view, self.prefix + "minimum-scale");
self.maximumScale = self.getViewPreferenceValue(view, self.prefix + "maximum-scale");
self.scaleViewsToFit = self.getViewPreferenceBoolean(view, self.prefix + "scale-to-fit");
self.scaleToFitType = self.getViewPreferenceValue(view, self.prefix + "scale-to-fit-type");
self.scaleToFitOnDoubleClick = self.getViewPreferenceBoolean(view, self.prefix + "scale-on-double-click");
self.actualSizeOnDoubleClick = self.getViewPreferenceBoolean(view, self.prefix + "actual-size-on-double-click");
self.scaleViewsOnResize = self.getViewPreferenceBoolean(view, self.prefix + "scale-on-resize");
self.enableScaleUp = self.getViewPreferenceBoolean(view, self.prefix + "enable-scale-up");
self.centerHorizontally = self.getViewPreferenceBoolean(view, self.prefix + "center-horizontally");
self.centerVertically = self.getViewPreferenceBoolean(view, self.prefix + "center-vertically");
self.navigationOnKeypress = self.getViewPreferenceBoolean(view, self.prefix + "navigate-on-keypress");
self.showViewName = self.getViewPreferenceBoolean(view, self.prefix + "show-view-name");
self.refreshPageForChanges = self.getViewPreferenceBoolean(view, self.prefix + "refresh-for-changes");
self.refreshPageForChangesInterval = self.getViewPreferenceValue(view, self.prefix + "refresh-interval");
self.showNavigationControls = self.getViewPreferenceBoolean(view, self.prefix + "show-navigation-controls");
self.scaleViewSlider = self.getViewPreferenceBoolean(view, self.prefix + "show-scale-controls");
self.enableDeepLinking = self.getViewPreferenceBoolean(view, self.prefix + "enable-deep-linking");
self.singlePageApplication = self.getViewPreferenceBoolean(view, self.prefix + "application");
self.showByMediaQuery = self.getViewPreferenceBoolean(view, self.prefix + "show-by-media-query");
self.showUpdateNotification = document.cookie!="" ? document.cookie.indexOf(self.pageRefreshedName)!=-1 : false;
self.imageComparisonDuration = self.getViewPreferenceValue(view, self.prefix + "image-comparison-duration");
self.supportAnimations = self.getViewPreferenceBoolean(view, self.prefix + "enable-animations", true);
if (self.scaleViewsToFit) {
var newScaleValue = self.scaleViewToFit(view);
if (newScaleValue<0) {
setTimeout(self.scaleViewToFit, 500, view);
}
}
else {
self.viewScale = self.getViewScaleValue(view);
self.viewToFitWidthScale = self.getViewFitToViewportWidthScale(view, self.enableScaleUp)
self.viewToFitHeightScale = self.getViewFitToViewportScale(view, self.enableScaleUp);
self.updateSliderValue(self.viewScale);
}
if (self.imageComparisonDuration!=null) {
// todo
}
if (self.refreshPageForChangesInterval!=null) {
self.refreshDuration = Number(self.refreshPageForChangesInterval);
}
}
}
self.previousView = function(event) {
var rules = self.getStylesheetRules();
var view = self.getVisibleView()
var index = view ? self.getViewIndex(view) : -1;
var prevQueryIndex = index!=-1 ? index-1 : self.currentQuery.index-1;
var queryIndex = 0;
var numberOfRules = rules!=null ? rules.length : 0;
if (event) {
event.stopImmediatePropagation();
}
if (prevQueryIndex<0) {
return;
}
// loop through rules and hide media queries except selected
for (var i=0;i<numberOfRules;i++) {
var rule = rules[i];
if (rule.media!=null) {
if (queryIndex==prevQueryIndex) {
self.currentQuery.mediaText = rule.conditionText;
self.currentQuery.index = prevQueryIndex;
self.currentQuery.rule = rule;
self.enableMediaQuery(rule);
self.updateViewLabel();
self.updateURL();
self.dispatchViewChange();
}
else {
self.disableMediaQuery(rule);
}
queryIndex++;
}
}
}
self.nextView = function(event) {
var rules = self.getStylesheetRules();
var view = self.getVisibleView();
var index = view ? self.getViewIndex(view) : -1;
var nextQueryIndex = index!=-1 ? index+1 : self.currentQuery.index+1;
var queryIndex = 0;
var numberOfRules = rules!=null ? rules.length : 0;
var numberOfMediaQueries = self.getNumberOfMediaRules();
if (event) {
event.stopImmediatePropagation();
}
if (nextQueryIndex>=numberOfMediaQueries) {
return;
}
// loop through rules and hide media queries except selected
for (var i=0;i<numberOfRules;i++) {
var rule = rules[i];
if (rule.media!=null) {
if (queryIndex==nextQueryIndex) {
self.currentQuery.mediaText = rule.conditionText;
self.currentQuery.index = nextQueryIndex;
self.currentQuery.rule = rule;
self.enableMediaQuery(rule);
self.updateViewLabel();
self.updateURL();
self.dispatchViewChange();
}
else {
self.disableMediaQuery(rule);
}
queryIndex++;
}
}
}
/**
* Enables a view via media query
*/
self.enableMediaQuery = function(rule) {
try {
rule.media.mediaText = self.inclusionQuery;
}
catch(error) {
//self.log(error);
rule.conditionText = self.inclusionQuery;
}
}
self.disableMediaQuery = function(rule) {
try {
rule.media.mediaText = self.exclusionQuery;
}
catch(error) {
rule.conditionText = self.exclusionQuery;
}
}
self.dispatchViewChange = function() {
try {
var event = new Event(self.NAVIGATION_CHANGE);
window.dispatchEvent(event);
}
catch (error) {
// In IE 11: Object doesn't support this action
}
}
self.getNumberOfMediaRules = function() {
var rules = self.getStylesheetRules();
var numberOfRules = rules ? rules.length : 0;
var numberOfQueries = 0;
for (var i=0;i<numberOfRules;i++) {
if (rules[i].media!=null) { numberOfQueries++; }
}
return numberOfQueries;
}
/////////////////////////////////////////
// VIEW SCALE
/////////////////////////////////////////
self.sliderChangeHandler = function(event) {
var value = self.getShortNumber(event.currentTarget.value/100);
var view = self.getVisibleView();
self.setViewScaleValue(view, false, value, true);
}
self.updateSliderValue = function(scale) {
var slider = document.getElementById(self.viewScaleSliderId);
var tooltip = parseInt(scale * 100 + "") + "%";
var inputType;
var inputValue;
if (slider) {
inputValue = self.getShortNumber(scale * 100);
if (inputValue!=slider["value"]) {
slider["value"] = inputValue;
}
inputType = slider.getAttributeNS(null, "type");
if (inputType!="range") {
// input range is not supported
slider.style.display = "none";
}
self.setTooltip(slider, tooltip);
}
}
self.viewChangeHandler = function(event) {
var view = self.getVisibleView();
var matrix = view ? getComputedStyle(view).transform : null;
if (matrix) {
self.viewScale = self.getViewScaleValue(view);
var scaleNeededToFit = self.getViewFitToViewportScale(view);
var isViewLargerThanViewport = scaleNeededToFit<1;
// scale large view to fit if scale to fit is enabled
if (self.scaleViewsToFit) {
self.scaleViewToFit(view);
}
else {
self.updateSliderValue(self.viewScale);
}
}
}
self.getViewScaleValue = function(view) {
var matrix = getComputedStyle(view).transform;
if (matrix) {
var matrixArray = matrix.replace("matrix(", "").split(",");
var scaleX = parseFloat(matrixArray[0]);
var scaleY = parseFloat(matrixArray[3]);
var scale = Math.min(scaleX, scaleY);
}
return scale;
}
/**
* Scales view to scale.
* @param {Object} view view to scale. views are in views array
* @param {Boolean} scaleToFit set to true to scale to fit. set false to use desired scale value
* @param {Number} desiredScale scale to define. not used if scale to fit is false
* @param {Boolean} isSliderChange indicates if slider is callee
*/
self.setViewScaleValue = function(view, scaleToFit, desiredScale, isSliderChange) {
var enableScaleUp = self.enableScaleUp;
var scaleToFitType = self.scaleToFitType;
var minimumScale = self.minimumScale;
var maximumScale = self.maximumScale;
var hasMinimumScale = !isNaN(minimumScale) && minimumScale!="";
var hasMaximumScale = !isNaN(maximumScale) && maximumScale!="";
var scaleNeededToFit = self.getViewFitToViewportScale(view, enableScaleUp);
var scaleNeededToFitWidth = self.getViewFitToViewportWidthScale(view, enableScaleUp);
var scaleNeededToFitHeight = self.getViewFitToViewportHeightScale(view, enableScaleUp);
var scaleToFitFull = self.getViewFitToViewportScale(view, true);
var scaleToFitFullWidth = self.getViewFitToViewportWidthScale(view, true);
var scaleToFitFullHeight = self.getViewFitToViewportHeightScale(view, true);
var scaleToWidth = scaleToFitType=="width";
var scaleToHeight = scaleToFitType=="height";
var shrunkToFit = false;
var topPosition = null;
var leftPosition = null;
var translateY = null;
var translateX = null;
var transformValue = "";
var canCenterVertically = true;
var canCenterHorizontally = true;
var style = view.style;
if (view && self.viewsDictionary[view.id] && self.viewsDictionary[view.id].styleDeclaration) {
style = self.viewsDictionary[view.id].styleDeclaration.style;
}
if (scaleToFit && isSliderChange!=true) {
if (scaleToFitType=="fit" || scaleToFitType=="") {
desiredScale = scaleNeededToFit;
}
else if (scaleToFitType=="width") {
desiredScale = scaleNeededToFitWidth;
}
else if (scaleToFitType=="height") {
desiredScale = scaleNeededToFitHeight;
}
}
else {
if (isNaN(desiredScale)) {
desiredScale = 1;
}
}
self.updateSliderValue(desiredScale);
// scale to fit width
if (scaleToWidth && scaleToHeight==false) {
canCenterVertically = scaleNeededToFitHeight>=scaleNeededToFitWidth;
canCenterHorizontally = scaleNeededToFitWidth>=1 && enableScaleUp==false;
if (isSliderChange) {
canCenterHorizontally = desiredScale<scaleToFitFullWidth;
}
else if (scaleToFit) {
desiredScale = scaleNeededToFitWidth;
}
if (hasMinimumScale) {
desiredScale = Math.max(desiredScale, Number(minimumScale));
}
if (hasMaximumScale) {
desiredScale = Math.min(desiredScale, Number(maximumScale));
}
desiredScale = self.getShortNumber(desiredScale);
canCenterHorizontally = self.canCenterHorizontally(view, "width", enableScaleUp, desiredScale, minimumScale, maximumScale);
canCenterVertically = self.canCenterVertically(view, "width", enableScaleUp, desiredScale, minimumScale, maximumScale);
if (desiredScale>1 && (enableScaleUp || isSliderChange)) {
transformValue = "scale(" + desiredScale + ")";
}
else if (desiredScale>=1 && enableScaleUp==false) {
transformValue = "scale(" + 1 + ")";
}
else {
transformValue = "scale(" + desiredScale + ")";
}
if (self.centerVertically) {
if (canCenterVertically) {
translateY = "-50%";
topPosition = "50%";
}
else {
translateY = "0";
topPosition = "0";
}
if (style.top != topPosition) {
style.top = topPosition + "";
}
if (canCenterVertically) {
transformValue += " translateY(" + translateY+ ")";
}
}
if (self.centerHorizontally) {
if (canCenterHorizontally) {
translateX = "-50%";
leftPosition = "50%";
}
else {
translateX = "0";
leftPosition = "0";
}
if (style.left != leftPosition) {
style.left = leftPosition + "";
}
if (canCenterHorizontally) {
transformValue += " translateX(" + translateX+ ")";
}
}
style.transformOrigin = "0 0";
style.transform = transformValue;
self.viewScale = desiredScale;
self.viewToFitWidthScale = scaleNeededToFitWidth;
self.viewToFitHeightScale = scaleNeededToFitHeight;
self.viewLeft = leftPosition;
self.viewTop = topPosition;
return desiredScale;
}
// scale to fit height
if (scaleToHeight && scaleToWidth==false) {
//canCenterVertically = scaleNeededToFitHeight>=scaleNeededToFitWidth;
//canCenterHorizontally = scaleNeededToFitHeight<=scaleNeededToFitWidth && enableScaleUp==false;
canCenterVertically = scaleNeededToFitHeight>=scaleNeededToFitWidth;
canCenterHorizontally = scaleNeededToFitWidth>=1 && enableScaleUp==false;
if (isSliderChange) {
canCenterHorizontally = desiredScale<scaleToFitFullHeight;
}
else if (scaleToFit) {
desiredScale = scaleNeededToFitHeight;
}
if (hasMinimumScale) {
desiredScale = Math.max(desiredScale, Number(minimumScale));
}
if (hasMaximumScale) {
desiredScale = Math.min(desiredScale, Number(maximumScale));
//canCenterVertically = desiredScale>=scaleNeededToFitHeight && enableScaleUp==false;
}
desiredScale = self.getShortNumber(desiredScale);
canCenterHorizontally = self.canCenterHorizontally(view, "height", enableScaleUp, desiredScale, minimumScale, maximumScale);
canCenterVertically = self.canCenterVertically(view, "height", enableScaleUp, desiredScale, minimumScale, maximumScale);
if (desiredScale>1 && (enableScaleUp || isSliderChange)) {
transformValue = "scale(" + desiredScale + ")";
}
else if (desiredScale>=1 && enableScaleUp==false) {
transformValue = "scale(" + 1 + ")";
}
else {
transformValue = "scale(" + desiredScale + ")";
}
if (self.centerHorizontally) {
if (canCenterHorizontally) {
translateX = "-50%";
leftPosition = "50%";
}
else {
translateX = "0";
leftPosition = "0";
}
if (style.left != leftPosition) {
style.left = leftPosition + "";
}
if (canCenterHorizontally) {
transformValue += " translateX(" + translateX+ ")";
}
}
if (self.centerVertically) {
if (canCenterVertically) {
translateY = "-50%";
topPosition = "50%";
}
else {
translateY = "0";
topPosition = "0";
}
if (style.top != topPosition) {
style.top = topPosition + "";
}
if (canCenterVertically) {
transformValue += " translateY(" + translateY+ ")";
}
}
style.transformOrigin = "0 0";
style.transform = transformValue;
self.viewScale = desiredScale;
self.viewToFitWidthScale = scaleNeededToFitWidth;
self.viewToFitHeightScale = scaleNeededToFitHeight;
self.viewLeft = leftPosition;
self.viewTop = topPosition;
return scaleNeededToFitHeight;
}
if (scaleToFitType=="fit") {
//canCenterVertically = scaleNeededToFitHeight>=scaleNeededToFitWidth;
//canCenterHorizontally = scaleNeededToFitWidth>=scaleNeededToFitHeight;
canCenterVertically = scaleNeededToFitHeight>=scaleNeededToFit;
canCenterHorizontally = scaleNeededToFitWidth>=scaleNeededToFit;
if (hasMinimumScale) {
desiredScale = Math.max(desiredScale, Number(minimumScale));
}
desiredScale = self.getShortNumber(desiredScale);
if (isSliderChange || scaleToFit==false) {
canCenterVertically = scaleToFitFullHeight>=desiredScale;
canCenterHorizontally = desiredScale<scaleToFitFullWidth;
}
else if (scaleToFit) {
desiredScale = scaleNeededToFit;
}
transformValue = "scale(" + desiredScale + ")";
//canCenterHorizontally = self.canCenterHorizontally(view, "fit", false, desiredScale);
//canCenterVertically = self.canCenterVertically(view, "fit", false, desiredScale);
if (self.centerVertically) {
if (canCenterVertically) {
translateY = "-50%";
topPosition = "50%";
}
else {
translateY = "0";
topPosition = "0";
}
if (style.top != topPosition) {
style.top = topPosition + "";
}
if (canCenterVertically) {
transformValue += " translateY(" + translateY+ ")";
}
}
if (self.centerHorizontally) {
if (canCenterHorizontally) {
translateX = "-50%";
leftPosition = "50%";
}
else {
translateX = "0";
leftPosition = "0";
}
if (style.left != leftPosition) {
style.left = leftPosition + "";
}
if (canCenterHorizontally) {
transformValue += " translateX(" + translateX+ ")";
}
}
style.transformOrigin = "0 0";
style.transform = transformValue;
self.viewScale = desiredScale;
self.viewToFitWidthScale = scaleNeededToFitWidth;
self.viewToFitHeightScale = scaleNeededToFitHeight;
self.viewLeft = leftPosition;
self.viewTop = topPosition;
self.updateSliderValue(desiredScale);
return desiredScale;
}
if (scaleToFitType=="default" || scaleToFitType=="") {
desiredScale = 1;
if (hasMinimumScale) {
desiredScale = Math.max(desiredScale, Number(minimumScale));
}
if (hasMaximumScale) {
desiredScale = Math.min(desiredScale, Number(maximumScale));
}
canCenterHorizontally = self.canCenterHorizontally(view, "none", false, desiredScale, minimumScale, maximumScale);
canCenterVertically = self.canCenterVertically(view, "none", false, desiredScale, minimumScale, maximumScale);
if (self.centerVertically) {
if (canCenterVertically) {
translateY = "-50%";
topPosition = "50%";
}
else {
translateY = "0";
topPosition = "0";
}
if (style.top != topPosition) {
style.top = topPosition + "";
}
if (canCenterVertically) {
transformValue += " translateY(" + translateY+ ")";
}
}
if (self.centerHorizontally) {
if (canCenterHorizontally) {
translateX = "-50%";
leftPosition = "50%";
}
else {
translateX = "0";
leftPosition = "0";
}
if (style.left != leftPosition) {
style.left = leftPosition + "";
}
if (canCenterHorizontally) {
transformValue += " translateX(" + translateX+ ")";
}
else {
transformValue += " translateX(" + 0 + ")";
}
}
style.transformOrigin = "0 0";
style.transform = transformValue;
self.viewScale = desiredScale;
self.viewToFitWidthScale = scaleNeededToFitWidth;
self.viewToFitHeightScale = scaleNeededToFitHeight;
self.viewLeft = leftPosition;
self.viewTop = topPosition;
self.updateSliderValue(desiredScale);
return desiredScale;
}
}
/**
* Returns true if view can be centered horizontally
* @param {HTMLElement} view view
* @param {String} type type of scaling - width, height, all, none
* @param {Boolean} scaleUp if scale up enabled
* @param {Number} scale target scale value
*/
self.canCenterHorizontally = function(view, type, scaleUp, scale, minimumScale, maximumScale) {
var scaleNeededToFit = self.getViewFitToViewportScale(view, scaleUp);
var scaleNeededToFitHeight = self.getViewFitToViewportHeightScale(view, scaleUp);
var scaleNeededToFitWidth = self.getViewFitToViewportWidthScale(view, scaleUp);
var canCenter = false;
var minScale;
type = type==null ? "none" : type;
scale = scale==null ? scale : scaleNeededToFitWidth;
scaleUp = scaleUp == null ? false : scaleUp;
if (type=="width") {
if (scaleUp && maximumScale==null) {
canCenter = false;
}
else if (scaleNeededToFitWidth>=1) {
canCenter = true;
}
}
else if (type=="height") {
minScale = Math.min(1, scaleNeededToFitHeight);
if (minimumScale!="" && maximumScale!="") {
minScale = Math.max(minimumScale, Math.min(maximumScale, scaleNeededToFitHeight));
}
else {
if (minimumScale!="") {
minScale = Math.max(minimumScale, scaleNeededToFitHeight);
}
if (maximumScale!="") {
minScale = Math.max(minimumScale, Math.min(maximumScale, scaleNeededToFitHeight));
}
}
if (scaleUp && maximumScale=="") {
canCenter = false;
}
else if (scaleNeededToFitWidth>=minScale) {
canCenter = true;
}
}
else if (type=="fit") {
canCenter = scaleNeededToFitWidth>=scaleNeededToFit;
}
else {
if (scaleUp) {
canCenter = false;
}
else if (scaleNeededToFitWidth>=1) {
canCenter = true;
}
}
self.horizontalScrollbarsNeeded = canCenter;
return canCenter;
}
/**
* Returns true if view can be centered horizontally
* @param {HTMLElement} view view to scale
* @param {String} type type of scaling
* @param {Boolean} scaleUp if scale up enabled
* @param {Number} scale target scale value
*/
self.canCenterVertically = function(view, type, scaleUp, scale, minimumScale, maximumScale) {
var scaleNeededToFit = self.getViewFitToViewportScale(view, scaleUp);
var scaleNeededToFitWidth = self.getViewFitToViewportWidthScale(view, scaleUp);
var scaleNeededToFitHeight = self.getViewFitToViewportHeightScale(view, scaleUp);
var canCenter = false;
var minScale;
type = type==null ? "none" : type;
scale = scale==null ? 1 : scale;
scaleUp = scaleUp == null ? false : scaleUp;
if (type=="width") {
canCenter = scaleNeededToFitHeight>=scaleNeededToFitWidth;
}
else if (type=="height") {
minScale = Math.max(minimumScale, Math.min(maximumScale, scaleNeededToFit));
canCenter = scaleNeededToFitHeight>=minScale;
}
else if (type=="fit") {
canCenter = scaleNeededToFitHeight>=scaleNeededToFit;
}
else {
if (scaleUp) {
canCenter = false;
}
else if (scaleNeededToFitHeight>=1) {
canCenter = true;
}
}
self.verticalScrollbarsNeeded = canCenter;
return canCenter;
}
self.getViewFitToViewportScale = function(view, scaleUp) {
var enableScaleUp = scaleUp;
var availableWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
var availableHeight = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
var elementWidth = parseFloat(getComputedStyle(view, "style").width);
var elementHeight = parseFloat(getComputedStyle(view, "style").height);
var newScale = 1;
// if element is not added to the document computed values are NaN
if (isNaN(elementWidth) || isNaN(elementHeight)) {
return newScale;
}
availableWidth -= self.horizontalPadding;
availableHeight -= self.verticalPadding;
if (enableScaleUp) {
newScale = Math.min(availableHeight/elementHeight, availableWidth/elementWidth);
}
else if (elementWidth > availableWidth || elementHeight > availableHeight) {
newScale = Math.min(availableHeight/elementHeight, availableWidth/elementWidth);
}
return newScale;
}
self.getViewFitToViewportWidthScale = function(view, scaleUp) {
// need to get browser viewport width when element
var isParentWindow = view && view.parentNode && view.parentNode===document.body;
var enableScaleUp = scaleUp;
var availableWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
var elementWidth = parseFloat(getComputedStyle(view, "style").width);
var newScale = 1;
// if element is not added to the document computed values are NaN
if (isNaN(elementWidth)) {
return newScale;
}
availableWidth -= self.horizontalPadding;
if (enableScaleUp) {
newScale = availableWidth/elementWidth;
}
else if (elementWidth > availableWidth) {
newScale = availableWidth/elementWidth;
}
return newScale;
}
self.getViewFitToViewportHeightScale = function(view, scaleUp) {
var enableScaleUp = scaleUp;
var availableHeight = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
var elementHeight = parseFloat(getComputedStyle(view, "style").height);
var newScale = 1;
// if element is not added to the document computed values are NaN
if (isNaN(elementHeight)) {
return newScale;
}
availableHeight -= self.verticalPadding;
if (enableScaleUp) {
newScale = availableHeight/elementHeight;
}
else if (elementHeight > availableHeight) {
newScale = availableHeight/elementHeight;
}
return newScale;
}
self.keypressHandler = function(event) {
var rightKey = 39;
var leftKey = 37;
// listen for both events
if (event.type=="keypress") {
window.removeEventListener("keyup", self.keypressHandler);
}
else {
window.removeEventListener("keypress", self.keypressHandler);
}
if (self.showNavigationControls) {
if (self.navigationOnKeypress) {
if (event.keyCode==rightKey) {
self.nextView();
}
if (event.keyCode==leftKey) {
self.previousView();
}
}
}
else if (self.navigationOnKeypress) {
if (event.keyCode==rightKey) {
self.nextView();
}
if (event.keyCode==leftKey) {
self.previousView();
}
}
}
///////////////////////////////////
// GENERAL FUNCTIONS
///////////////////////////////////
self.getViewById = function(id) {
id = id ? id.replace("#", "") : "";
var view = self.viewIds.indexOf(id)!=-1 && self.getElement(id);
return view;
}
self.getViewIds = function() {
var viewIds = self.getViewPreferenceValue(document.body, self.prefix + "view-ids");
var viewId = null;
viewIds = viewIds!=null && viewIds!="" ? viewIds.split(",") : [];
if (viewIds.length==0) {
viewId = self.getViewPreferenceValue(document.body, self.prefix + "view-id");
viewIds = viewId ? [viewId] : [];
}
return viewIds;
}
self.getInitialViewId = function() {
var viewId = self.getViewPreferenceValue(document.body, self.prefix + "view-id");
return viewId;
}
self.getApplicationStylesheet = function() {
var stylesheetId = self.getViewPreferenceValue(document.body, self.prefix + "stylesheet-id");
self.applicationStylesheet = document.getElementById("applicationStylesheet");
return self.applicationStylesheet.sheet;
}
self.getVisibleView = function() {
var viewIds = self.getViewIds();
for (var i=0;i<viewIds.length;i++) {
var viewId = viewIds[i].replace(/[\#?\.?](.*)/, "$" + "1");
var view = self.getElement(viewId);
var postName = "_Class";
if (view==null && viewId && viewId.lastIndexOf(postName)!=-1) {
view = self.getElement(viewId.replace(postName, ""));
}
if (view) {
var display = getComputedStyle(view).display;
if (display=="block" || display=="flex") {
return view;
}
}
}
return null;
}
self.getVisibleViews = function() {
var viewIds = self.getViewIds();
var views = [];
for (var i=0;i<viewIds.length;i++) {
var viewId = viewIds[i].replace(/[\#?\.?](.*)/, "$" + "1");
var view = self.getElement(viewId);
var postName = "_Class";
if (view==null && viewId && viewId.lastIndexOf(postName)!=-1) {
view = self.getElement(viewId.replace(postName, ""));
}
if (view) {
var display = getComputedStyle(view).display;
if (display=="none") {
continue;
}
if (display=="block" || display=="flex") {
views.push(view);
}
}
}
return views;
}
self.getStateNameByViewId = function(id) {
var state = self.viewsDictionary[id];
return state && state.stateName;
}
self.getMatchingViews = function(ids) {
var views = self.addedViews.slice(0);
var matchingViews = [];
if (self.showByMediaQuery) {
for (let index = 0; index < views.length; index++) {
var viewId = views[index];
var state = self.viewsDictionary[viewId];
var rule = state && state.rule;
var matchResults = window.matchMedia(rule.conditionText);
var view = self.views[viewId];
if (matchResults.matches) {
if (ids==true) {
matchingViews.push(viewId);
}
else {
matchingViews.push(view);
}
}
}
}
return matchingViews;
}
self.ruleMatchesQuery = function(rule) {
var result = window.matchMedia(rule.conditionText);
return result.matches;
}
self.getViewsByStateName = function(stateName, matchQuery) {
var views = self.addedViews.slice(0);
var matchingViews = [];
if (self.showByMediaQuery) {
// find state name
for (let index = 0; index < views.length; index++) {
var viewId = views[index];
var state = self.viewsDictionary[viewId];
var rule = state.rule;
var mediaRule = state.mediaRule;
var view = self.views[viewId];
var viewStateName = self.getStyleRuleValue(mediaRule, self.STATE_NAME, state);
var stateFoundAtt = view.getAttribute(self.STATE_NAME)==state;
var matchesResults = false;
if (viewStateName==stateName) {
if (matchQuery) {
matchesResults = self.ruleMatchesQuery(rule);
if (matchesResults) {
matchingViews.push(view);
}
}
else {
matchingViews.push(view);
}
}
}
}
return matchingViews;
}
self.getInitialView = function() {
var viewId = self.getInitialViewId();
viewId = viewId.replace(/[\#?\.?](.*)/, "$" + "1");
var view = self.getElement(viewId);
var postName = "_Class";
if (view==null && viewId && viewId.lastIndexOf(postName)!=-1) {
view = self.getElement(viewId.replace(postName, ""));
}
return view;
}
self.getViewIndex = function(view) {
var viewIds = self.getViewIds();
var id = view ? view.id : null;
var index = id && viewIds ? viewIds.indexOf(id) : -1;
return index;
}
self.syncronizeViewToURL = function() {
var fragment = self.getHashFragment();
if (self.showByMediaQuery) {
var stateName = fragment;
if (stateName==null || stateName=="") {
var initialView = self.getInitialView();
stateName = initialView ? self.getStateNameByViewId(initialView.id) : null;
}
self.showMediaQueryViewsByState(stateName);
return;
}
var view = self.getViewById(fragment);
var index = view ? self.getViewIndex(view) : 0;
if (index==-1) index = 0;
var currentView = self.hideViews(index);
if (self.supportsPopState && currentView) {
if (fragment==null) {
window.history.replaceState({name:currentView.id}, null, "#"+ currentView.id);
}
else {
window.history.pushState({name:currentView.id}, null, "#"+ currentView.id);
}
}
self.setViewVariables(view);
return view;
}
/**
* Set the currentView or currentOverlay properties and set the lastView or lastOverlay properties
*/
self.setViewVariables = function(view, overlay, parentView) {
if (view) {
if (self.currentView) {
self.lastView = self.currentView;
}
self.currentView = view;
}
if (overlay) {
if (self.currentOverlay) {
self.lastOverlay = self.currentOverlay;
}
self.currentOverlay = overlay;
}
}
self.getViewPreferenceBoolean = function(view, property, altValue) {
var computedStyle = window.getComputedStyle(view);
var value = computedStyle.getPropertyValue(property);
var type = typeof value;
if (value=="true" || (type=="string" && value.indexOf("true")!=-1)) {
return true;
}
else if (value=="" && arguments.length==3) {
return altValue;
}
return false;
}
self.getViewPreferenceValue = function(view, property, defaultValue) {
var value = window.getComputedStyle(view).getPropertyValue(property);
if (value===undefined) {
return defaultValue;
}
value = value.replace(/^[\s\"]*/, "");
value = value.replace(/[\s\"]*$/, "");
value = value.replace(/^[\s"]*(.*?)[\s"]*$/, function (match, capture) {
return capture;
});
return value;
}
self.getStyleRuleValue = function(cssRule, property) {
var value = cssRule ? cssRule.style.getPropertyValue(property) : null;
if (value===undefined) {
return null;
}
value = value.replace(/^[\s\"]*/, "");
value = value.replace(/[\s\"]*$/, "");
value = value.replace(/^[\s"]*(.*?)[\s"]*$/, function (match, capture) {
return capture;
});
return value;
}
/**
* Get the first defined value of property. Returns empty string if not defined
* @param {String} id id of element
* @param {String} property
*/
self.getCSSPropertyValueForElement = function(id, property) {
var styleSheets = document.styleSheets;
var numOfStylesheets = styleSheets.length;
var values = [];
var selectorIDText = "#" + id;
var selectorClassText = "." + id + "_Class";
var value;
for(var i=0;i<numOfStylesheets;i++) {
var styleSheet = styleSheets[i];
var cssRules = self.getStylesheetRules(styleSheet);
var numOfCSSRules = cssRules.length;
var cssRule;
for (var j=0;j<numOfCSSRules;j++) {
cssRule = cssRules[j];
if (cssRule.media) {
var mediaRules = cssRule.cssRules;
var numOfMediaRules = mediaRules ? mediaRules.length : 0;
for(var k=0;k<numOfMediaRules;k++) {
var mediaRule = mediaRules[k];
if (mediaRule.selectorText==selectorIDText || mediaRule.selectorText==selectorClassText) {
if (mediaRule.style && mediaRule.style.getPropertyValue(property)!="") {
value = mediaRule.style.getPropertyValue(property);
values.push(value);
}
}
}
}
else {
if (cssRule.selectorText==selectorIDText || cssRule.selectorText==selectorClassText) {
if (cssRule.style && cssRule.style.getPropertyValue(property)!="") {
value = cssRule.style.getPropertyValue(property);
values.push(value);
}
}
}
}
}
return values.pop();
}
self.getIsStyleDefined = function(id, property) {
var value = self.getCSSPropertyValueForElement(id, property);
return value!==undefined && value!="";
}
self.collectViews = function() {
var viewIds = self.getViewIds();
for (let index = 0; index < viewIds.length; index++) {
const id = viewIds[index];
const view = self.getElement(id);
self.views[id] = view;
}
self.viewIds = viewIds;
}
self.collectOverlays = function() {
var viewIds = self.getViewIds();
var ids = [];
for (let index = 0; index < viewIds.length; index++) {
const id = viewIds[index];
const view = self.getViewById(id);
const isOverlay = view && self.isOverlay(view);
if (isOverlay) {
ids.push(id);
self.overlays[id] = view;
}
}
self.overlayIds = ids;
}
self.collectMediaQueries = function() {
var viewIds = self.getViewIds();
var styleSheet = self.getApplicationStylesheet();
var cssRules = self.getStylesheetRules(styleSheet);
var numOfCSSRules = cssRules ? cssRules.length : 0;
var cssRule;
var id = viewIds.length ? viewIds[0]: ""; // single view
var selectorIDText = "#" + id;
var selectorClassText = "." + id + "_Class";
var viewsNotFound = viewIds.slice();
var viewsFound = [];
var selectorText = null;
var property = self.prefix + "view-id";
var stateName = self.prefix + "state";
var stateValue = null;
var view = null;
for (var j=0;j<numOfCSSRules;j++) {
cssRule = cssRules[j];
if (cssRule.media) {
var mediaRules = cssRule.cssRules;
var numOfMediaRules = mediaRules ? mediaRules.length : 0;
var mediaViewInfoFound = false;
var mediaId = null;
for(var k=0;k<numOfMediaRules;k++) {
var mediaRule = mediaRules[k];
selectorText = mediaRule.selectorText;
if (selectorText==".mediaViewInfo" && mediaViewInfoFound==false) {
mediaId = self.getStyleRuleValue(mediaRule, property);
stateValue = self.getStyleRuleValue(mediaRule, stateName);
selectorIDText = "#" + mediaId;
selectorClassText = "." + mediaId + "_Class";
view = self.getElement(mediaId);
// prevent duplicates from load and domcontentloaded events
if (self.addedViews.indexOf(mediaId)==-1) {
self.addView(view, mediaId, cssRule, mediaRule, stateValue);
}
viewsFound.push(mediaId);
if (viewsNotFound.indexOf(mediaId)!=-1) {
viewsNotFound.splice(viewsNotFound.indexOf(mediaId));
}
mediaViewInfoFound = true;
}
if (selectorIDText==selectorText || selectorClassText==selectorText) {
var styleObject = self.viewsDictionary[mediaId];
if (styleObject) {
styleObject.styleDeclaration = mediaRule;
}
break;
}
}
}
else {
selectorText = cssRule.selectorText;
if (selectorText==null) continue;
selectorText = selectorText.replace(/[#|\s|*]?/g, "");
if (viewIds.indexOf(selectorText)!=-1) {
view = self.getElement(selectorText);
self.addView(view, selectorText, cssRule, null, stateValue);
if (viewsNotFound.indexOf(selectorText)!=-1) {
viewsNotFound.splice(viewsNotFound.indexOf(selectorText));
}
break;
}
}
}
if (viewsNotFound.length) {
console.log("Could not find the following views:" + viewsNotFound.join(",") + "");
console.log("Views found:" + viewsFound.join(",") + "");
}
}
/**
* Adds a view
* @param {HTMLElement} view view element
* @param {String} id id of view element
* @param {CSSRule} cssRule of view element
* @param {CSSMediaRule} mediaRule media rule of view element
* @param {String} stateName name of state if applicable
**/
self.addView = function(view, viewId, cssRule, mediaRule, stateName) {
var viewData = {};
viewData.name = viewId;
viewData.rule = cssRule;
viewData.id = viewId;
viewData.mediaRule = mediaRule;
viewData.stateName = stateName;
self.views.push(viewData);
self.addedViews.push(viewId);
self.viewsDictionary[viewId] = viewData;
self.mediaQueryDictionary[viewId] = cssRule;
}
self.hasView = function(name) {
if (self.addedViews.indexOf(name)!=-1) {
return true;
}
return false;
}
/**
* Go to view by id. Views are added in addView()
* @param {String} id id of view in current
* @param {Boolean} maintainPreviousState if true then do not hide other views
* @param {String} parent id of parent view
**/
self.goToView = function(id, maintainPreviousState, parent) {
var state = self.viewsDictionary[id];
if (state) {
if (maintainPreviousState==false || maintainPreviousState==null) {
self.hideViews();
}
self.enableMediaQuery(state.rule);
self.updateViewLabel();
self.updateURL();
}
else {
var event = new Event(self.STATE_NOT_FOUND);
self.stateName = id;
window.dispatchEvent(event);
}
}
/**
* Go to the view in the event targets CSS variable
**/
self.goToTargetView = function(event) {
var button = event.currentTarget;
var buttonComputedStyles = getComputedStyle(button);
var actionTargetValue = buttonComputedStyles.getPropertyValue(self.prefix+"action-target").trim();
var animation = buttonComputedStyles.getPropertyValue(self.prefix+"animation").trim();
var targetType = buttonComputedStyles.getPropertyValue(self.prefix+"action-type").trim();
var targetView = self.application ? null : self.getElement(actionTargetValue);
var targetState = targetView ? self.getStateNameByViewId(targetView.id) : null;
var actionTargetStyles = targetView ? targetView.style : null;
var state = self.viewsDictionary[actionTargetValue];
// navigate to page
if (self.application==false || targetType=="page") {
document.location.href = "./" + actionTargetValue;
return;
}
// if view is found
if (targetView) {
if (self.currentOverlay) {
self.removeOverlay(false);
}
if (self.showByMediaQuery) {
var stateName = targetState;
if (stateName==null || stateName=="") {
var initialView = self.getInitialView();
stateName = initialView ? self.getStateNameByViewId(initialView.id) : null;
}
self.showMediaQueryViewsByState(stateName, event);
return;
}
// add animation set in event target style declaration
if (animation && self.supportAnimations) {
self.crossFade(self.currentView, targetView, false, animation);
}
else {
self.setViewVariables(self.currentView);
self.hideViews();
self.enableMediaQuery(state.rule);
self.scaleViewIfNeeded(targetView);
self.centerView(targetView);
self.updateViewLabel();
self.updateURL();
}
}
else {
var stateEvent = new Event(self.STATE_NOT_FOUND);
self.stateName = name;
window.dispatchEvent(stateEvent);
}
event.stopImmediatePropagation();
}
/**
* Cross fade between views
**/
self.crossFade = function(from, to, update, animation) {
var targetIndex = to.parentNode
var fromIndex = Array.prototype.slice.call(from.parentElement.children).indexOf(from);
var toIndex = Array.prototype.slice.call(to.parentElement.children).indexOf(to);
if (from.parentNode==to.parentNode) {
var reverse = self.getReverseAnimation(animation);
var duration = self.getAnimationDuration(animation, true);
// if target view is above (higher index)
// then fade in target view
// and after fade in then hide previous view instantly
if (fromIndex<toIndex) {
self.setElementAnimation(from, null);
self.setElementAnimation(to, null);
self.showViewByMediaQuery(to);
self.fadeIn(to, update, animation);
setTimeout(function() {
self.setElementAnimation(to, null);
self.setElementAnimation(from, null);
self.hideView(from);
self.updateURL();
self.setViewVariables(to);
self.updateViewLabel();
}, duration)
}
// if target view is on bottom
// then show target view instantly
// and fade out current view
else if (fromIndex>toIndex) {
self.setElementAnimation(to, null);
self.setElementAnimation(from, null);
self.showViewByMediaQuery(to);
self.fadeOut(from, update, reverse);
setTimeout(function() {
self.setElementAnimation(to, null);
self.setElementAnimation(from, null);
self.hideView(from);
self.updateURL();
self.setViewVariables(to);
}, duration)
}
}
}
self.fadeIn = function(element, update, animation) {
self.showViewByMediaQuery(element);
if (update) {
self.updateURL(element);
element.addEventListener("animationend", function(event) {
element.style.animation = null;
self.setViewVariables(element);
self.updateViewLabel();
element.removeEventListener("animationend", arguments.callee);
});
}
self.setElementAnimation(element, null);
element.style.animation = animation;
}
self.fadeOutCurrentView = function(animation, update) {
if (self.currentView) {
self.fadeOut(self.currentView, update, animation);
}
if (self.currentOverlay) {
self.fadeOut(self.currentOverlay, update, animation);
}
}
self.fadeOut = function(element, update, animation) {
if (update) {
element.addEventListener("animationend", function(event) {
element.style.animation = null;
self.hideView(element);
element.removeEventListener("animationend", arguments.callee);
});
}
element.style.animationPlayState = "paused";
element.style.animation = animation;
element.style.animationPlayState = "running";
}
self.getReverseAnimation = function(animation) {
if (animation && animation.indexOf("reverse")==-1) {
animation += " reverse";
}
return animation;
}
/**
* Get duration in animation string
* @param {String} animation animation value
* @param {Boolean} inMilliseconds length in milliseconds if true
*/
self.getAnimationDuration = function(animation, inMilliseconds) {
var duration = 0;
var expression = /.+(\d\.\d)s.+/;
if (animation && animation.match(expression)) {
duration = parseFloat(animation.replace(expression, "$" + "1"));
if (duration && inMilliseconds) duration = duration * 1000;
}
return duration;
}
self.setElementAnimation = function(element, animation, priority) {
element.style.setProperty("animation", animation, "important");
}
self.getElement = function(id) {
id = id ? id.trim() : id;
var element = id ? document.getElementById(id) : null;
return element;
}
self.getElementById = function(id) {
id = id ? id.trim() : id;
var element = id ? document.getElementById(id) : null;
return element;
}
self.getElementByClass = function(className) {
className = className ? className.trim() : className;
var elements = document.getElementsByClassName(className);
return elements.length ? elements[0] : null;
}
self.resizeHandler = function(event) {
if (self.showByMediaQuery) {
if (self.enableDeepLinking) {
var stateName = self.getHashFragment();
if (stateName==null || stateName=="") {
var initialView = self.getInitialView();
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<span>10th Young Professionals Sustainability Imbizo happening In-Person</span>
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<span>The 10th CESA Young Professionals Sustainability Imbizo (YP Imbizo) is set to take place in Gauteng on the 28th and 29th June this year. This will be the first non-virtual event to be hosted by the CESA YPF since 2019, owing to the lockdown announced by President Cyril Ramaphosa due to COVID-19. The YP Imbizo provides a unique and dynamic platform for young professionals in the built environment in both the public and private sectors to discuss pertinent issues relating to all aspects of delivery and maintenance of infrastructure and engineering projects.<br/><br/>Expressing her excitement about this upcoming event, CESA YPF National Chairperson, Renee Petersen said this would be the biggest and best YP Imbizo yet. “We are excited that this will be the 10th year of the YP Imbizo, and with the President recently ending the national state of disaster, we are happy that it will be held at a venue which we will announce soon,” she said.<br/><br/>The YP Imbizo seeks to establish and maintain structures for young professionals to become role models for school learners as well as providing coaching and mentoring opportunities for young professionals from senior infrastructure professionals. <br/><br/>The YP Imbizo objectives include:<br/><br/>- Empowering young professionals with the best leadership experience embracing objectivity,<br/>- community participation/activisms, professionalism, and promotion of engineering principles.<br/>- Establishing and maintaining organisational structures for young professionals to act as role models for school learners and senior infrastructure/engineering professionals to mentor young professionals.<br/>- Providing solutions to skills development and retention by the public sector and private sector. Without engineering skills, there will be no provision for water, housing, and road services but abject poverty, inequality and unemployment will prevail.<br/><br/>Abstracts or topics are welcome to be submitted by young professionals who can take advantage of the opportunity for personal development. The local organising committee has also announced the opening of sponsorship opportunities for companies with an interest in contributing towards sustaining the future of engineering. <br/><br/>For more information on the YP Imbizo visit </span><a href="https://www.cesa.co.za/imbizo/" target="_blank"><span style="text-decoration:underline;">https://www.cesa.co.za/imbizo/ </span></a>
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<span>Disclaimer<br/></span><br/><span style="font-style:normal;font-weight:normal;font-size:12px;">This publication is an attempt to share information of interest with members and readers. Articles on products and ideas featured in this publication from other sources do not of necessity carry the endorsement of CESA unless explicitly so indicated.<br/><br/>CE-track Contributions:<br/>Email or phone Bonolo Nkgodi at bonolo@cesa.co.za or 011 463 2022 to contribute news, comment etc.<br/>Copyright © CESA 2022</span>
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