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Diffstat (limited to 'third_party/git/gitweb/static/js/adjust-timezone.js')
| -rw-r--r-- | third_party/git/gitweb/static/js/adjust-timezone.js | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/third_party/git/gitweb/static/js/adjust-timezone.js b/third_party/git/gitweb/static/js/adjust-timezone.js deleted file mode 100644 index 0c67779500..0000000000 --- a/third_party/git/gitweb/static/js/adjust-timezone.js +++ /dev/null @@ -1,330 +0,0 @@ -// Copyright (C) 2011, John 'Warthog9' Hawley <warthog9@eaglescrag.net> -// 2011, Jakub Narebski <jnareb@gmail.com> - -/** - * @fileOverview Manipulate dates in gitweb output, adjusting timezone - * @license GPLv2 or later - */ - -/** - * Get common timezone, add UI for changing timezones, and adjust - * dates to use requested common timezone. - * - * This function is called during onload event (added to window.onload). - * - * @param {String} tzDefault: default timezone, if there is no cookie - * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone - * @param {String} tzCookieInfo.name: name of cookie to store timezone - * @param {String} tzClassName: denotes elements with date to be adjusted - */ -function onloadTZSetup(tzDefault, tzCookieInfo, tzClassName) { - var tzCookieTZ = getCookie(tzCookieInfo.name, tzCookieInfo); - var tz = tzDefault; - - if (tzCookieTZ) { - // set timezone to value saved in a cookie - tz = tzCookieTZ; - // refresh cookie, so its expiration counts from last use of gitweb - setCookie(tzCookieInfo.name, tzCookieTZ, tzCookieInfo); - } - - // add UI for changing timezone - addChangeTZ(tz, tzCookieInfo, tzClassName); - - // server-side of gitweb produces datetime in UTC, - // so if tz is 'utc' there is no need for changes - var nochange = tz === 'utc'; - - // adjust dates to use specified common timezone - fixDatetimeTZ(tz, tzClassName, nochange); -} - - -/* ...................................................................... */ -/* Changing dates to use requested timezone */ - -/** - * Replace RFC-2822 dates contained in SPAN elements with tzClassName - * CSS class with equivalent dates in given timezone. - * - * @param {String} tz: numeric timezone in '(-|+)HHMM' format, or 'utc', or 'local' - * @param {String} tzClassName: specifies elements to be changed - * @param {Boolean} nochange: markup for timezone change, but don't change it - */ -function fixDatetimeTZ(tz, tzClassName, nochange) { - // sanity check, method should be ensured by common-lib.js - if (!document.getElementsByClassName) { - return; - } - - // translate to timezone in '(-|+)HHMM' format - tz = normalizeTimezoneInfo(tz); - - // NOTE: result of getElementsByClassName should probably be cached - var classesFound = document.getElementsByClassName(tzClassName, "span"); - for (var i = 0, len = classesFound.length; i < len; i++) { - var curElement = classesFound[i]; - - curElement.title = 'Click to change timezone'; - if (!nochange) { - // we use *.firstChild.data (W3C DOM) instead of *.innerHTML - // as the latter doesn't always work everywhere in every browser - var epoch = parseRFC2822Date(curElement.firstChild.data); - var adjusted = formatDateRFC2882(epoch, tz); - - curElement.firstChild.data = adjusted; - } - } -} - - -/* ...................................................................... */ -/* Adding triggers, generating timezone menu, displaying and hiding */ - -/** - * Adds triggers for UI to change common timezone used for dates in - * gitweb output: it marks up and/or creates item to click to invoke - * timezone change UI, creates timezone UI fragment to be attached, - * and installs appropriate onclick trigger (via event delegation). - * - * @param {String} tzSelected: pre-selected timezone, - * 'utc' or 'local' or '(-|+)HHMM' - * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone - * @param {String} tzClassName: specifies elements to install trigger - */ -function addChangeTZ(tzSelected, tzCookieInfo, tzClassName) { - // make link to timezone UI discoverable - addCssRule('.'+tzClassName + ':hover', - 'text-decoration: underline; cursor: help;'); - - // create form for selecting timezone (to be saved in a cookie) - var tzSelectFragment = document.createDocumentFragment(); - tzSelectFragment = createChangeTZForm(tzSelectFragment, - tzSelected, tzCookieInfo, tzClassName); - - // event delegation handler for timezone selection UI (clicking on entry) - // see http://www.nczonline.net/blog/2009/06/30/event-delegation-in-javascript/ - // assumes that there is no existing document.onclick handler - document.onclick = function onclickHandler(event) { - //IE doesn't pass in the event object - event = event || window.event; - - //IE uses srcElement as the target - var target = event.target || event.srcElement; - - switch (target.className) { - case tzClassName: - // don't display timezone menu if it is already displayed - if (tzSelectFragment.childNodes.length > 0) { - displayChangeTZForm(target, tzSelectFragment); - } - break; - } // end switch - }; -} - -/** - * Create DocumentFragment with UI for changing common timezone in - * which dates are shown in. - * - * @param {DocumentFragment} documentFragment: where attach UI - * @param {String} tzSelected: default (pre-selected) timezone - * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone - * @returns {DocumentFragment} - */ -function createChangeTZForm(documentFragment, tzSelected, tzCookieInfo, tzClassName) { - var div = document.createElement("div"); - div.className = 'popup'; - - /* '<div class="close-button" title="(click on this box to close)">X</div>' */ - var closeButton = document.createElement('div'); - closeButton.className = 'close-button'; - closeButton.title = '(click on this box to close)'; - closeButton.appendChild(document.createTextNode('X')); - closeButton.onclick = closeTZFormHandler(documentFragment, tzClassName); - div.appendChild(closeButton); - - /* 'Select timezone: <br clear="all">' */ - div.appendChild(document.createTextNode('Select timezone: ')); - var br = document.createElement('br'); - br.clear = 'all'; - div.appendChild(br); - - /* '<select name="tzoffset"> - * ... - * <option value="-0700">UTC-07:00</option> - * <option value="-0600">UTC-06:00</option> - * ... - * </select>' */ - var select = document.createElement("select"); - select.name = "tzoffset"; - //select.style.clear = 'all'; - select.appendChild(generateTZOptions(tzSelected)); - select.onchange = selectTZHandler(documentFragment, tzCookieInfo, tzClassName); - div.appendChild(select); - - documentFragment.appendChild(div); - - return documentFragment; -} - - -/** - * Hide (remove from DOM) timezone change UI, ensuring that it is not - * garbage collected and that it can be re-enabled later. - * - * @param {DocumentFragment} documentFragment: contains detached UI - * @param {HTMLSelectElement} target: select element inside of UI - * @param {String} tzClassName: specifies element where UI was installed - * @returns {DocumentFragment} documentFragment - */ -function removeChangeTZForm(documentFragment, target, tzClassName) { - // find containing element, where we appended timezone selection UI - // `target' is somewhere inside timezone menu - var container = target.parentNode, popup = target; - while (container && - container.className !== tzClassName) { - popup = container; - container = container.parentNode; - } - // safety check if we found correct container, - // and if it isn't deleted already - if (!container || !popup || - container.className !== tzClassName || - popup.className !== 'popup') { - return documentFragment; - } - - // timezone selection UI was appended as last child - // see also displayChangeTZForm function - var removed = popup.parentNode.removeChild(popup); - if (documentFragment.firstChild !== removed) { // the only child - // re-append it so it would be available for next time - documentFragment.appendChild(removed); - } - // all of inline style was added by this script - // it is not really needed to remove it, but it is a good practice - container.removeAttribute('style'); - - return documentFragment; -} - - -/** - * Display UI for changing common timezone for dates in gitweb output. - * To be used from 'onclick' event handler. - * - * @param {HTMLElement} target: where to install/display UI - * @param {DocumentFragment} tzSelectFragment: timezone selection UI - */ -function displayChangeTZForm(target, tzSelectFragment) { - // for absolute positioning to be related to target element - target.style.position = 'relative'; - target.style.display = 'inline-block'; - - // show/display UI for changing timezone - target.appendChild(tzSelectFragment); -} - - -/* ...................................................................... */ -/* List of timezones for timezone selection menu */ - -/** - * Generate list of timezones for creating timezone select UI - * - * @returns {Object[]} list of e.g. { value: '+0100', descr: 'GMT+01:00' } - */ -function generateTZList() { - var timezones = [ - { value: "utc", descr: "UTC/GMT"}, - { value: "local", descr: "Local (per browser)"} - ]; - - // generate all full hour timezones (no fractional timezones) - for (var x = -12, idx = timezones.length; x <= +14; x++, idx++) { - var hours = (x >= 0 ? '+' : '-') + padLeft(x >=0 ? x : -x, 2); - timezones[idx] = { value: hours + '00', descr: 'UTC' + hours + ':00'}; - if (x === 0) { - timezones[idx].descr = 'UTC\u00B100:00'; // 'UTC±00:00' - } - } - - return timezones; -} - -/** - * Generate <options> elements for timezone select UI - * - * @param {String} tzSelected: default timezone - * @returns {DocumentFragment} list of options elements to appendChild - */ -function generateTZOptions(tzSelected) { - var elems = document.createDocumentFragment(); - var timezones = generateTZList(); - - for (var i = 0, len = timezones.length; i < len; i++) { - var tzone = timezones[i]; - var option = document.createElement("option"); - if (tzone.value === tzSelected) { - option.defaultSelected = true; - } - option.value = tzone.value; - option.appendChild(document.createTextNode(tzone.descr)); - - elems.appendChild(option); - } - - return elems; -} - - -/* ...................................................................... */ -/* Event handlers and/or their generators */ - -/** - * Create event handler that select timezone and closes timezone select UI. - * To be used as $('select[name="tzselect"]').onchange handler. - * - * @param {DocumentFragment} tzSelectFragment: timezone selection UI - * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone - * @param {String} tzCookieInfo.name: name of cookie to save result of selection - * @param {String} tzClassName: specifies element where UI was installed - * @returns {Function} event handler - */ -function selectTZHandler(tzSelectFragment, tzCookieInfo, tzClassName) { - //return function selectTZ(event) { - return function (event) { - event = event || window.event; - var target = event.target || event.srcElement; - - var selected = target.options.item(target.selectedIndex); - removeChangeTZForm(tzSelectFragment, target, tzClassName); - - if (selected) { - selected.defaultSelected = true; - setCookie(tzCookieInfo.name, selected.value, tzCookieInfo); - fixDatetimeTZ(selected.value, tzClassName); - } - }; -} - -/** - * Create event handler that closes timezone select UI. - * To be used e.g. as $('.closebutton').onclick handler. - * - * @param {DocumentFragment} tzSelectFragment: timezone selection UI - * @param {String} tzClassName: specifies element where UI was installed - * @returns {Function} event handler - */ -function closeTZFormHandler(tzSelectFragment, tzClassName) { - //return function closeTZForm(event) { - return function (event) { - event = event || window.event; - var target = event.target || event.srcElement; - - removeChangeTZForm(tzSelectFragment, target, tzClassName); - }; -} - -/* end of adjust-timezone.js */ |