66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
// IDLE HANDLING /////////////////////////////////////////////////////
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window.idleTime = 0; // in seconds
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window.isHidden = false;
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var IDLE_POLL_TIME = 10;
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var idlePoll = function() {
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window.idleTime += IDLE_POLL_TIME;
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}
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setInterval(idlePoll, IDLE_POLL_TIME*1000);
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var idleReset = function () {
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// update immediately when the user comes back
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if(isIdle()) {
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window.idleTime = 0;
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$.each(window._onResumeFunctions, function(ind, f) {
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f();
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});
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}
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window.idleTime = 0;
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};
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// only reset idle on mouse move where the coordinates are actually different.
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// some browsers send the event when not moving!
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var _lastMouseX=-1, _lastMouseY=-1;
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var idleMouseMove = function(e) {
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var dX = _lastMouseX-e.clientX;
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var dY = _lastMouseY-e.clientY;
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var deltaSquared = dX*dX + dY*dY;
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// only treat movements over 3 pixels as enough to reset us
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if (deltaSquared > 3*3) {
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_lastMouseX = e.clientX;
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_lastMouseY = e.clientY;
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idleReset();
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}
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}
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$('body').keypress(idleReset);
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$('body').mousemove(idleMouseMove);
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window.isIdle = function() {
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if (window.idleTime < window.REFRESH) {
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// if idle for less than the refresh time ignore 'hidden' state - likely initial page load in the background
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return false;
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}
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var hidden = (document.hidden || document.webkitHidden || document.mozHidden || document.msHidden);
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if (hidden) {
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// window hidden - force an idle state even if below the idle time limit
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return true;
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}
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// otherwise use the idle time limit
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return window.idleTime >= MAX_IDLE_TIME;
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}
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window._onResumeFunctions = [];
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// add your function here if you want to be notified when the user
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// resumes from being idle
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window.addResumeFunction = function(f) {
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window._onResumeFunctions.push(f);
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}
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