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KB.utils.formatDuration = function (d) {
if (d >= 86400) {
return Math.round(d/86400) + "d";
}
else if (d >= 3600) {
return Math.round(d/3600) + "h";
}
else if (d >= 60) {
return Math.round(d/60) + "m";
}
return d + "s";
};
KB.utils.getSelectionPosition = function (element) {
var selectionStart, selectionEnd;
if (element.value.length < element.selectionStart) {
selectionStart = element.value.length;
} else {
selectionStart = element.selectionStart;
}
if (element.selectionStart === element.selectionEnd) {
selectionEnd = selectionStart;
} else {
selectionEnd = element.selectionEnd;
}
return {
selectionStart: selectionStart,
selectionEnd: selectionEnd
};
};
KB.utils.arraysIdentical = function (a, b) {
var i = a.length;
if (i !== b.length) {
return false;
}
while (i--) {
if (a[i] !== b[i]) {
return false;
}
}
return true;
};
KB.utils.arraysStartsWith = function (array1, array2) {
var length = Math.min(array1.length, array2.length);
for (var i = 0; i < length; i++) {
if (array1[i] !== array2[i]) {
return false;
}
}
return true;
};
KB.utils.isInputField = function (event) {
var element = event.target;
return !!(element.tagName === 'INPUT' ||
element.tagName === 'SELECT' ||
element.tagName === 'TEXTAREA' ||
element.isContentEditable);
};
KB.utils.getKey = function (e) {
var mapping = {
'Esc': 'Escape',
'Up': 'ArrowUp',
'Down': 'ArrowDown',
'Left': 'ArrowLeft',
'Right': 'ArrowRight'
};
for (var key in mapping) {
if (mapping.hasOwnProperty(key) && key === e.key) {
return mapping[key];
}
}
return e.key;
};
KB.utils.getViewportSize = function () {
return {
width: Math.max(document.documentElement.clientWidth, window.innerWidth || 0),
height: Math.max(document.documentElement.clientHeight, window.innerHeight || 0)
};
};
KB.utils.isVisible = function() {
var property = '';
if (typeof document.hidden !== 'undefined') {
property = 'visibilityState';
} else if (typeof document.mozHidden !== 'undefined') {
property = 'mozVisibilityState';
} else if (typeof document.msHidden !== 'undefined') {
property = 'msVisibilityState';
} else if (typeof document.webkitHidden !== 'undefined') {
property = 'webkitVisibilityState';
}
if (property !== '') {
return document[property] === 'visible';
}
return true;
};
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