mirror of
https://github.com/ether/etherpad-lite.git
synced 2025-11-04 10:11:33 +01:00
364 lines
11 KiB
JavaScript
364 lines
11 KiB
JavaScript
/**
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* Copyright 2009 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS-IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var padutils = {
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escapeHtml: function(x) {
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return String(x).replace(/\</g, '<').replace(/\>/g, '>');
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},
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uniqueId: function() {
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function encodeNum(n, width) {
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// returns string that is exactly 'width' chars, padding with zeros
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// and taking rightmost digits
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return (Array(width+1).join('0') + Number(n).toString(35)).slice(-width);
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}
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return [pad.getClientIp(),
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encodeNum(+new Date, 7),
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encodeNum(Math.floor(Math.random()*1e9), 4)].join('.');
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},
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uaDisplay: function(ua) {
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var m;
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function clean(a) {
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var maxlen = 16;
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a = a.replace(/[^a-zA-Z0-9\.]/g, '');
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if (a.length > maxlen) {
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a = a.substr(0,maxlen);
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}
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return a;
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}
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function checkver(name) {
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var m = ua.match(RegExp(name + '\\/([\\d\\.]+)'));
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if (m && m.length > 1) {
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return clean(name+m[1]);
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}
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return null;
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}
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// firefox
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if (checkver('Firefox')) { return checkver('Firefox'); }
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// misc browsers, including IE
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m = ua.match(/compatible; ([^;]+);/);
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if (m && m.length > 1) {
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return clean(m[1]);
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}
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// iphone
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if (ua.match(/\(iPhone;/)) {
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return 'iPhone';
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}
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// chrome
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if (checkver('Chrome')) { return checkver('Chrome'); }
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// safari
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m = ua.match(/Safari\/[\d\.]+/);
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if (m) {
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var v = '?';
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m = ua.match(/Version\/([\d\.]+)/);
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if (m && m.length > 1) {
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v = m[1];
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}
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return clean('Safari'+v);
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}
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// everything else
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var x = ua.split(' ')[0];
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return clean(x);
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},
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// "func" is a function over 0..(numItems-1) that is monotonically
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// "increasing" with index (false, then true). Finds the boundary
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// between false and true, a number between 0 and numItems inclusive.
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binarySearch: function (numItems, func) {
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if (numItems < 1) return 0;
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if (func(0)) return 0;
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if (! func(numItems-1)) return numItems;
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var low = 0; // func(low) is always false
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var high = numItems-1; // func(high) is always true
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while ((high - low) > 1) {
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var x = Math.floor((low+high)/2); // x != low, x != high
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if (func(x)) high = x;
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else low = x;
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}
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return high;
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},
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// e.g. "Thu Jun 18 2009 13:09"
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simpleDateTime: function(date) {
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var d = new Date(+date); // accept either number or date
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var dayOfWeek = (['Sun','Mon','Tue','Wed','Thu','Fri','Sat'])[d.getDay()];
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var month = (['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'])[d.getMonth()];
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var dayOfMonth = d.getDate();
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var year = d.getFullYear();
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var hourmin = d.getHours()+":"+("0"+d.getMinutes()).slice(-2);
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return dayOfWeek+' '+month+' '+dayOfMonth+' '+year+' '+hourmin;
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},
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findURLs: function(text) {
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// copied from ACE
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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]/;
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var _REGEX_URLCHAR = new RegExp('('+/[-:@a-zA-Z0-9_.,~%+\/?=&#;()$]/.source+'|'+_REGEX_WORDCHAR.source+')');
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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');
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// returns null if no URLs, or [[startIndex1, url1], [startIndex2, url2], ...]
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function _findURLs(text) {
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_REGEX_URL.lastIndex = 0;
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var urls = null;
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var execResult;
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while ((execResult = _REGEX_URL.exec(text))) {
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urls = (urls || []);
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var startIndex = execResult.index;
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var url = execResult[0];
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urls.push([startIndex, url]);
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}
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return urls;
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}
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return _findURLs(text);
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},
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escapeHtmlWithClickableLinks: function(text, target) {
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var idx = 0;
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var pieces = [];
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var urls = padutils.findURLs(text);
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function advanceTo(i) {
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if (i > idx) {
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pieces.push(padutils.escapeHtml(text.substring(idx, i)));
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idx = i;
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}
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}
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if (urls) {
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for(var j=0;j<urls.length;j++) {
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var startIndex = urls[j][0];
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var href = urls[j][1];
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advanceTo(startIndex);
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pieces.push('<a ', (target?'target="'+target+'" ':''),
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'href="', href.replace(/\"/g, '"'), '">');
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advanceTo(startIndex + href.length);
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pieces.push('</a>');
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}
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}
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advanceTo(text.length);
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return pieces.join('');
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},
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bindEnterAndEscape: function(node, onEnter, onEscape) {
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// Use keypress instead of keyup in bindEnterAndEscape
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// Keyup event is fired on enter in IME (Input Method Editor), But
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// keypress is not. So, I changed to use keypress instead of keyup.
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// It is work on Windows (IE8, Chrome 6.0.472), CentOs (Firefox 3.0) and Mac OSX (Firefox 3.6.10, Chrome 6.0.472, Safari 5.0).
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if (onEnter) {
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node.keypress( function(evt) {
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if (evt.which == 13) {
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onEnter(evt);
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}
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});
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}
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if (onEscape) {
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node.keydown( function(evt) {
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if (evt.which == 27) {
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onEscape(evt);
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}
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});
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}
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},
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timediff: function(d) {
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function format(n, word) {
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n = Math.round(n);
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return ('' + n + ' ' + word + (n != 1 ? 's' : '') + ' ago');
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}
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d = Math.max(0, (+(new Date) - (+d) - pad.clientTimeOffset) / 1000);
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if (d < 60) { return format(d, 'second'); }
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d /= 60;
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if (d < 60) { return format(d, 'minute'); }
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d /= 60;
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if (d < 24) { return format(d, 'hour'); }
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d /= 24;
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return format(d, 'day');
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},
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makeAnimationScheduler: function(funcToAnimateOneStep, stepTime, stepsAtOnce) {
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if (stepsAtOnce === undefined) {
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stepsAtOnce = 1;
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}
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var animationTimer = null;
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function scheduleAnimation() {
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if (! animationTimer) {
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animationTimer = window.setTimeout(function() {
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animationTimer = null;
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var n = stepsAtOnce;
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var moreToDo = true;
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while (moreToDo && n > 0) {
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moreToDo = funcToAnimateOneStep();
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n--;
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}
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if (moreToDo) {
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// more to do
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scheduleAnimation();
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}
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}, stepTime*stepsAtOnce);
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}
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}
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return { scheduleAnimation: scheduleAnimation };
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},
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makeShowHideAnimator: function(funcToArriveAtState, initiallyShown, fps, totalMs) {
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var animationState = (initiallyShown ? 0 : -2); // -2 hidden, -1 to 0 fade in, 0 to 1 fade out
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var animationFrameDelay = 1000 / fps;
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var animationStep = animationFrameDelay / totalMs;
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var scheduleAnimation =
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padutils.makeAnimationScheduler(animateOneStep, animationFrameDelay).scheduleAnimation;
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function doShow() {
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animationState = -1;
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funcToArriveAtState(animationState);
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scheduleAnimation();
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}
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function doQuickShow() { // start showing without losing any fade-in progress
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if (animationState < -1) {
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animationState = -1;
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}
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else if (animationState <= 0) {
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animationState = animationState;
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}
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else {
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animationState = Math.max(-1, Math.min(0, - animationState));
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}
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funcToArriveAtState(animationState);
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scheduleAnimation();
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}
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function doHide() {
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if (animationState >= -1 && animationState <= 0) {
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animationState = 1e-6;
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scheduleAnimation();
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}
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}
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function animateOneStep() {
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if (animationState < -1 || animationState == 0) {
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return false;
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}
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else if (animationState < 0) {
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// animate show
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animationState += animationStep;
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if (animationState >= 0) {
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animationState = 0;
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funcToArriveAtState(animationState);
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return false;
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}
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else {
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funcToArriveAtState(animationState);
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return true;
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}
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}
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else if (animationState > 0) {
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// animate hide
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animationState += animationStep;
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if (animationState >= 1) {
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animationState = 1;
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funcToArriveAtState(animationState);
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animationState = -2;
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return false;
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}
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else {
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funcToArriveAtState(animationState);
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return true;
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}
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}
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}
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return {show: doShow, hide: doHide, quickShow: doQuickShow};
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},
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_nextActionId: 1,
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uncanceledActions: {},
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getCancellableAction: function(actionType, actionFunc) {
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var o = padutils.uncanceledActions[actionType];
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if (! o) {
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o = {};
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padutils.uncanceledActions[actionType] = o;
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}
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var actionId = (padutils._nextActionId++);
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o[actionId] = true;
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return function() {
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var p = padutils.uncanceledActions[actionType];
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if (p && p[actionId]) {
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actionFunc();
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}
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};
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},
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cancelActions: function(actionType) {
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var o = padutils.uncanceledActions[actionType];
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if (o) {
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// clear it
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delete padutils.uncanceledActions[actionType];
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}
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},
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makeFieldLabeledWhenEmpty: function(field, labelText) {
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field = $(field);
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function clear() {
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field.addClass('editempty');
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field.val(labelText);
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}
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field.focus(function() {
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if (field.hasClass('editempty')) {
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field.val('');
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}
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field.removeClass('editempty');
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});
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field.blur(function() {
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if (! field.val()) {
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clear();
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}
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});
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return {clear:clear};
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},
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getCheckbox: function(node) {
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return $(node).is(':checked');
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},
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setCheckbox: function(node, value) {
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if (value) {
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$(node).attr('checked', 'checked');
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}
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else {
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$(node).removeAttr('checked');
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}
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},
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bindCheckboxChange: function(node, func) {
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$(node).bind("click change", func);
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},
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encodeUserId: function(userId) {
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return userId.replace(/[^a-y0-9]/g, function(c) {
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if (c == ".") return "-";
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return 'z'+c.charCodeAt(0)+'z';
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});
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},
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decodeUserId: function(encodedUserId) {
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return encodedUserId.replace(/[a-y0-9]+|-|z.+?z/g, function(cc) {
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if (cc == '-') return '.';
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else if (cc.charAt(0) == 'z') {
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return String.fromCharCode(Number(cc.slice(1,-1)));
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}
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else {
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return cc;
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}
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});
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}
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};
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