From c752e4a6e5d82e0a4dc6bc3ec7e83f3e93ddcac7 Mon Sep 17 00:00:00 2001 From: ansuz Date: Mon, 9 May 2016 14:20:11 +0200 Subject: [PATCH] remove sharejs --- www/common/sharejs_textarea.js | 188 --------------------------------- 1 file changed, 188 deletions(-) delete mode 100644 www/common/sharejs_textarea.js diff --git a/www/common/sharejs_textarea.js b/www/common/sharejs_textarea.js deleted file mode 100644 index 18282d682..000000000 --- a/www/common/sharejs_textarea.js +++ /dev/null @@ -1,188 +0,0 @@ -define(function () { - -/** - * Licensed under the standard MIT license: - * - * Copyright 2011 Joseph Gentle. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - * See: https://github.com/share/ShareJS/blob/master/LICENSE - */ - -/* This contains the textarea binding for ShareJS. This binding is really - * simple, and a bit slow on big documents (Its O(N). However, it requires no - * changes to the DOM and no heavy libraries like ace. It works for any kind of - * text input field. - * - * You probably want to use this binding for small fields on forms and such. - * For code editors or rich text editors or whatever, I recommend something - * heavier. - */ - - -/* applyChange creates the edits to convert oldval -> newval. - * - * This function should be called every time the text element is changed. - * Because changes are always localised, the diffing is quite easy. We simply - * scan in from the start and scan in from the end to isolate the edited range, - * then delete everything that was removed & add everything that was added. - * This wouldn't work for complex changes, but this function should be called - * on keystroke - so the edits will mostly just be single character changes. - * Sometimes they'll paste text over other text, but even then the diff - * generated by this algorithm is correct. - * - * This algorithm is O(N). I suspect you could speed it up somehow using regular expressions. - */ -var applyChange = function(ctx, oldval, newval) { - // Strings are immutable and have reference equality. I think this test is O(1), so its worth doing. - if (oldval === newval) { - return; - } - - var commonStart = 0; - while (oldval.charAt(commonStart) === newval.charAt(commonStart)) { - commonStart++; - } - - var commonEnd = 0; - while (oldval.charAt(oldval.length - 1 - commonEnd) === newval.charAt(newval.length - 1 - commonEnd) && - commonEnd + commonStart < oldval.length && commonEnd + commonStart < newval.length) { - commonEnd++; - } - - var bugz = { - commonStart:commonStart, - commonEnd:commonEnd, - oldvalLength: oldval.length, - newvalLength: newval.length - }; - if (oldval.length !== commonStart + commonEnd) { - if (ctx.localChange) { ctx.localChange(true); } - ctx.remove(commonStart, oldval.length - commonStart - commonEnd); - } - if (newval.length !== commonStart + commonEnd) { - if (ctx.localChange) { ctx.localChange(true); } - ctx.insert(commonStart, newval.slice(commonStart, newval.length - commonEnd)); - } -}; - -/** - * Fix issues with textarea content which is different per-browser. - */ -var cannonicalize = function (content) { - - return content.replace(/\r\n/g, '\n'); -}; - -// Attach a textarea to a document's editing context. -// -// The context is optional, and will be created from the document if its not -// specified. -var attachTextarea = function(elem, ctx) { - - // initial state will always fail the !== check in genop. - var content = {}; - var newSelection; - - // Replace the content of the text area with newText, and transform the - // current cursor by the specified function. - var replaceText = function(newText, transformCursor) { - if (transformCursor) { - newSelection = [transformCursor(elem.selectionStart), transformCursor(elem.selectionEnd)]; - } - - // Fixate the window's scroll while we set the element's value. Otherwise - // the browser scrolls to the element. - var scrollTop = elem.scrollTop; - elem.value = newText; - content = elem.value; // Not done on one line so the browser can do newline conversion. - if (elem.scrollTop !== scrollTop) { elem.scrollTop = scrollTop; } - - // Setting the selection moves the cursor. We'll just have to let your - // cursor drift if the element isn't active, though usually users don't - // care. - if (newSelection && window.document.activeElement === elem) { - elem.selectionStart = newSelection[0]; - elem.selectionEnd = newSelection[1]; - } - }; - - //replaceText(ctx.get()); - - - // *** remote -> local changes - - ctx.onRemove(function(pos, length) { - var transformCursor = function(cursor) { - // If the cursor is inside the deleted region, we only want to move back to the start - // of the region. Hence the Math.min. - return pos < cursor ? cursor - Math.min(length, cursor - pos) : cursor; - }; - replaceText(ctx.getUserDoc(), transformCursor); - }); - - ctx.onInsert(function(pos, text) { - var transformCursor = function(cursor) { - return pos < cursor ? cursor + text.length : cursor; - }; - replaceText(ctx.getUserDoc(), transformCursor); - }); - - - // *** local -> remote changes - - // This function generates operations from the changed content in the textarea. - var genOp = function() { - // In a timeout so the browser has time to propogate the event's changes to the DOM. - setTimeout(function() { var val = elem.value; - if (val !== content) { - applyChange(ctx, ctx.getUserDoc(), cannonicalize(val)); - } - }, 0); - }; - - var eventNames = ['textInput', 'keydown', 'keyup', 'select', 'cut', 'paste']; - for (var i = 0; i < eventNames.length; i++) { - var e = eventNames[i]; - if (elem.addEventListener) { - elem.addEventListener(e, genOp, false); - } else { - elem.attachEvent('on' + e, genOp); - } - } - - ctx.detach = function() { - for (var i = 0; i < eventNames.length; i++) { - var e = eventNames[i]; - if (elem.removeEventListener) { - elem.removeEventListener(e, genOp, false); - } else { - elem.detachEvent('on' + e, genOp); - } - } - }; - - ctx.bumpSharejs = genOp; - - return ctx; -}; - -return { attach: attachTextarea }; -});