/**
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var padutils = {
escapeHtml: function(x) {
return String(x).replace(/\</g, '<').replace(/\>/g, '>');
},
uniqueId: function() {
function encodeNum(n, width) {
// returns string that is exactly 'width' chars, padding with zeros
// and taking rightmost digits
return (Array(width+1).join('0') + Number(n).toString(35)).slice(-width);
}
return [pad.getClientIp(),
encodeNum(+new Date, 7),
encodeNum(Math.floor(Math.random()*1e9), 4)].join('.');
},
uaDisplay: function(ua) {
var m;
function clean(a) {
var maxlen = 16;
a = a.replace(/[^a-zA-Z0-9\.]/g, '');
if (a.length > maxlen) {
a = a.substr(0,maxlen);
}
return a;
}
function checkver(name) {
var m = ua.match(RegExp(name + '\\/([\\d\\.]+)'));
if (m && m.length > 1) {
return clean(name+m[1]);
}
return null;
}
// firefox
if (checkver('Firefox')) { return checkver('Firefox'); }
// misc browsers, including IE
m = ua.match(/compatible; ([^;]+);/);
if (m && m.length > 1) {
return clean(m[1]);
}
// iphone
if (ua.match(/\(iPhone;/)) {
return 'iPhone';
}
// chrome
if (checkver('Chrome')) { return checkver('Chrome'); }
// safari
m = ua.match(/Safari\/[\d\.]+/);
if (m) {
var v = '?';
m = ua.match(/Version\/([\d\.]+)/);
if (m && m.length > 1) {
v = m[1];
}
return clean('Safari'+v);
}
// everything else
var x = ua.split(' ')[0];
return clean(x);
},
// "func" is a function over 0..(numItems-1) that is monotonically
// "increasing" with index (false, then true). Finds the boundary
// between false and true, a number between 0 and numItems inclusive.
binarySearch: function (numItems, func) {
if (numItems < 1) return 0;
if (func(0)) return 0;
if (! func(numItems-1)) return numItems;
var low = 0; // func(low) is always false
var high = numItems-1; // func(high) is always true
while ((high - low) > 1) {
var x = Math.floor((low+high)/2); // x != low, x != high
if (func(x)) high = x;
else low = x;
}
return high;
},
// e.g. "Thu Jun 18 2009 13:09"
simpleDateTime: function(date) {
var d = new Date(+date); // accept either number or date
var dayOfWeek = (['Sun','Mon','Tue','Wed','Thu','Fri','Sat'])[d.getDay()];
var month = (['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'])[d.getMonth()];
var dayOfMonth = d.getDate();
var year = d.getFullYear();
var hourmin = d.getHours()+":"+("0"+d.getMinutes()).slice(-2);
return dayOfWeek+' '+month+' '+dayOfMonth+' '+year+' '+hourmin;
},
findURLs: function(text) {
// copied from ACE
var _REGEX_WORDCHAR = /[\u0030-\u0039\u0041-\u005A\u0061-\u007A\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF\u0100-\u1FFF\u3040-\u9FFF\uF900-\uFDFF\uFE70-\uFEFE\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFDC]/;
var _REGEX_URLCHAR = new RegExp('('+/[-:@a-zA-Z0-9_.,~%+\/?=&#;()$]/.source+'|'+_REGEX_WORDCHAR.source+')');
var _REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|smb|afp|nfs|(x-)?man|gopher|txmt):\/\/|mailto:)/.source+_REGEX_URLCHAR.source+'*(?![:.,;])'+_REGEX_URLCHAR.source, 'g');
// returns null if no URLs, or [[startIndex1, url1], [startIndex2, url2], ...]
function _findURLs(text) {
_REGEX_URL.lastIndex = 0;
var urls = null;
var execResult;
while ((execResult = _REGEX_URL.exec(text))) {
urls = (urls || []);
var startIndex = execResult.index;
var url = execResult[0];
urls.push([startIndex, url]);
}
return urls;
}
return _findURLs(text);
},
escapeHtmlWithClickableLinks: function(text, target) {
var idx = 0;
var pieces = [];
var urls = padutils.findURLs(text);
function advanceTo(i) {
if (i > idx) {
pieces.push(padutils.escapeHtml(text.substring(idx, i)));
idx = i;
}
}
if (urls) {
for(var j=0;j<urls.length;j++) {
var startIndex = urls[j][0];
var href = urls[j][1];
advanceTo(startIndex);
pieces.push('<a ', (target?'target="'+target+'" ':''),
'href="', href.replace(/\"/g, '"'), '">');
advanceTo(startIndex + href.length);
pieces.push('</a>');
}
}
advanceTo(text.length);
return pieces.join('');
},
bindEnterAndEscape: function(node, onEnter, onEscape) {
function handleKey(evt) {
if (evt.which == 27 && onEscape) {
// "escape" key
if (evt.type == 'keydown') {
onEscape(evt);
}
evt.preventDefault();
}
else if (evt.which == 13 && onEnter) {
// return/enter
if (evt.type == 'keyup') {
onEnter(evt);
}
evt.preventDefault();
}
}
$(node).bind('keyup keypress keydown', handleKey);
},
timediff: function(d) {
function format(n, word) {
n = Math.round(n);
return ('' + n + ' ' + word + (n != 1 ? 's' : '') + ' ago');
}
d = Math.max(0, (+(new Date) - (+d) - pad.clientTimeOffset) / 1000);
if (d < 60) { return format(d, 'second'); }
d /= 60;
if (d < 60) { return format(d, 'minute'); }
d /= 60;
if (d < 24) { return format(d, 'hour'); }
d /= 24;
return format(d, 'day');
},
makeAnimationScheduler: function(funcToAnimateOneStep, stepTime, stepsAtOnce) {
if (stepsAtOnce === undefined) {
stepsAtOnce = 1;
}
var animationTimer = null;
function scheduleAnimation() {
if (! animationTimer) {
animationTimer = window.setTimeout(function() {
animationTimer = null;
var n = stepsAtOnce;
var moreToDo = true;
while (moreToDo && n > 0) {
moreToDo = funcToAnimateOneStep();
n--;
}
if (moreToDo) {
// more to do
scheduleAnimation();
}
}, stepTime*stepsAtOnce);
}
}
return { scheduleAnimation: scheduleAnimation };
},
makeShowHideAnimator: function(funcToArriveAtState, initiallyShown, fps, totalMs) {
var animationState = (initiallyShown ? 0 : -2); // -2 hidden, -1 to 0 fade in, 0 to 1 fade out
var animationFrameDelay = 1000 / fps;
var animationStep = animationFrameDelay / totalMs;
var scheduleAnimation =
padutils.makeAnimationScheduler(animateOneStep, animationFrameDelay).scheduleAnimation;
function doShow() {
animationState = -1;
funcToArriveAtState(animationState);
scheduleAnimation();
}
function doQuickShow() { // start showing without losing any fade-in progress
if (animationState < -1) {
animationState = -1;
}
else if (animationState <= 0) {
animationState = animationState;
}
else {
animationState = Math.max(-1, Math.min(0, - animationState));
}
funcToArriveAtState(animationState);
scheduleAnimation();
}
function doHide() {
if (animationState >= -1 && animationState <= 0) {
animationState = 1e-6;
scheduleAnimation();
}
}
function animateOneStep() {
if (animationState < -1 || animationState == 0) {
return false;
}
else if (animationState < 0) {
// animate show
animationState += animationStep;
if (animationState >= 0) {
animationState = 0;
funcToArriveAtState(animationState);
return false;
}
else {
funcToArriveAtState(animationState);
return true;
}
}
else if (animationState > 0) {
// animate hide
animationState += animationStep;
if (animationState >= 1) {
animationState = 1;
funcToArriveAtState(animationState);
animationState = -2;
return false;
}
else {
funcToArriveAtState(animationState);
return true;
}
}
}
return {show: doShow, hide: doHide, quickShow: doQuickShow};
},
_nextActionId: 1,
uncanceledActions: {},
getCancellableAction: function(actionType, actionFunc) {
var o = padutils.uncanceledActions[actionType];
if (! o) {
o = {};
padutils.uncanceledActions[actionType] = o;
}
var actionId = (padutils._nextActionId++);
o[actionId] = true;
return function() {
var p = padutils.uncanceledActions[actionType];
if (p && p[actionId]) {
actionFunc();
}
};
},
cancelActions: function(actionType) {
var o = padutils.uncanceledActions[actionType];
if (o) {
// clear it
delete padutils.uncanceledActions[actionType];
}
},
makeFieldLabeledWhenEmpty: function(field, labelText) {
field = $(field);
function clear() {
field.addClass('editempty');
field.val(labelText);
}
field.focus(function() {
if (field.hasClass('editempty')) {
field.val('');
}
field.removeClass('editempty');
});
field.blur(function() {
if (! field.val()) {
clear();
}
});
return {clear:clear};
},
getCheckbox: function(node) {
return $(node).is(':checked');
},
setCheckbox: function(node, value) {
if (value) {
$(node).attr('checked', 'checked');
}
else {
$(node).removeAttr('checked');
}
},
bindCheckboxChange: function(node, func) {
$(node).bind("click change", func);
},
encodeUserId: function(userId) {
return userId.replace(/[^a-y0-9]/g, function(c) {
if (c == ".") return "-";
return 'z'+c.charCodeAt(0)+'z';
});
},
decodeUserId: function(encodedUserId) {
return encodedUserId.replace(/[a-y0-9]+|-|z.+?z/g, function(cc) {
if (cc == '-') return '.';
else if (cc.charAt(0) == 'z') {
return String.fromCharCode(Number(cc.slice(1,-1)));
}
else {
return cc;
}
});
}
};
