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index.html
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<!-- <script src="http://172.20.10.4:8080/target/target-script-min.js#anonymous"></script> -->
<style>
#editor {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: white;
overflow-y: auto;
overflow-x: hidden;
padding: 10px;
}
#editor p {
margin: 0 0 15px 0;
text-indent: 2em;
}
/* 原始状态 */
#editor ins {
text-decoration: none;
display: inline;
color: inherit;
position: relative;
}
#editor del {
text-decoration: line-through;
display: none;
color: inherit;
position: relative;
}
/* 标记状态 */
#editor.revised-end ins {
text-decoration: underline;
/* border: solid 1px currentColor; */
display: inline;
/* color: red; */
color: black;
}
#editor.revised-end del {
text-decoration: line-through;
display: inline;
color: grey;
}
#editor.revised-end ins:before,
#editor.revised-end del:before,
#editor.revised-end ins:after,
#editor.revised-end del:after {
white-space: nowrap;
position: absolute;
top: -100%;
font-size: 9bt;
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
transform-origin: bottom left;
transform: scale(.5);
text-indent: 0;
}
#editor.revised-end ins:before {
left: -0.3em;
/* content: "〔INS"; */
}
#editor.revised-end del:before {
left: -0.3em;
/* content: "〔DEL"; */
}
#editor.revised-end ins:after,
#editor.revised-end del:after {
right: -0.25em;
/* content: "〕"; */
transform-origin: bottom right;
}
#editor.revised-end del:hover:before,
#editor.revised-end ins:hover:before {
transform: initial;
background-color: darkslateblue;
color: antiquewhite;
padding: 1px 0 3px;
z-index: 1;
position: fixed;
bottom: 0;
left: 0;
top: auto;
right: auto;
/* top: 130%; */
}
#editor.revised-end del:hover:before {
content: "〔 Deleted by "attr(cite)" at "attr(datetime)" 〕";
}
#editor.revised-end ins:hover:before {
content: "〔 Inserted by "attr(cite)" at "attr(datetime)" 〕";
}
#editor.revised-end del:hover:after,
#editor.revised-end ins:hover:after {
content: '';
/* top: 130%; */
}
/* #editor.revised-end ins:hover:after {
left: -11px;
top: 14%;
border: solid 12px transparent;
border-bottom-color: burlywood;
content: '';
width: 0;
height: 0;
} */
/* 无障碍阅读，为视力不便者提供 */
/* ins::before,
del::before,
ins::after,
del::after {
clip-path: inset(100%);
clip: rect(1px, 1px, 1px, 1px);
height: 1px;
overflow: hidden;
position: absolute;
white-space: nowrap;
width: 1px;
}
ins::before {
content: " [insertion start] ";
}
ins::after {
content: " [insertion end] ";
}
del::before {
content: " [deletion start] ";
}
del::after {
content: " [deletion end] ";
} */
/* 自制错别字波浪线 */
#editor>p span.spelling-error {
background: transparent url("data:image/gif;base64,R0lGODlhBQAEAJECAP////8AAAAAAAAAACH5BAEAAAIALAAAAAAFAAQAAAIIlGAXCCHrTCgAOw==") center bottom repeat-x;
border-bottom: solid 1px transparent;
}
</style>
<style id="user-colors">
/* #editor.revised-end ins[cite="veiky"],
#editor.revised-end del[cite="veiky"] {
color: red;
}
#editor.revised-end ins[cite="sun"],
#editor.revised-end del[cite="sun"] {
color: blue;
} */
</style>
</head>
<body>
<div id="editor" contenteditable="true" spellcheck="false">
<p>
<ins cite="veiky" datetime="2019-04-04T12:18">ssss</ins>
<del cite="veiky" datetime="2019-04-04T12:18">sssss</del>
</p>
</div>
<script id="browser" type="text/javascript">
// 智能机浏览器版本信息:
var browser = {
versions: function () {
var u = navigator.userAgent, app = navigator.appVersion;
return {//移动终端浏览器版本信息
ie: /(msie\s|trident.*rv:)([\w.]+)/.test(u.toLowerCase()),
trident: u.indexOf('Trident') > -1, //IE内核
presto: u.indexOf('Presto') > -1, //opera内核
webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核
gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核
mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端
ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端
android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或者uc浏览器
iPhone: u.indexOf('iPhone') > -1, //是否为iPhone或者QQHD浏览器
iPad: u.indexOf('iPad') > -1, //是否iPad
webApp: u.indexOf('Safari') == -1, //是否web应该程序，没有头部与底部
weixin: u.indexOf('MicroMessenger') > -1, //是否微信
qq: u.match(/\sQQ/i) == " qq" //是否QQ
};
}(),
language: (navigator.browserLanguage || navigator.language).toLowerCase()
};
function wrapperConsole4Mobile(console) {
console = console || window.console;
var cs = document.createElement('PRE');
cs.style.position = 'fixed';
cs.style.top = '50%';
cs.style.right = '1vmin';
cs.style.bottom = '1vmin';
cs.style.left = '1vmin';
cs.style.padding = '1vmin';
cs.style.paddingBottom = '5vmin';
cs.style.border = 'solid 1px grey';
cs.style.background = '#000';
cs.style.color = '#fff';
cs.style.overflowX = 'hidden';
cs.style.overflowY = 'auto';
document.body.appendChild(cs);
var _log = console.log;
var _tostring = function (e) {
switch (typeof e) {
case "undefined": return typeof e;
case "boolean": return e ? 'true' : 'false';
case "number": return e;
case "string": return `"${e}"`;
case "symbol": return 'symbol';
case "function": return e.toString();
case "object": {
if (e === null) return 'null';
else if (e instanceof HTMLElement) return e.outerHTML;
else if (e instanceof Text) return `"${e.nodeValue}"`;
else return JSON.stringify(e, null, 2);
}
break
default:
return 'error';
}
};
console.log = function () {
var stamp = new Date().toISOString();
var s = Array.from(arguments).map(_tostring).join(', ');
Array.from(arguments).forEach((e, i) => {
});
var span = document.createElement('EM');
span.style.paddingLeft = '5vmin';
span.style.textIndent = '-5vmin';
span.style.fontStyle = 'normal';
span.style.display = 'block';
// cs.appendChild(document.createTextNode('\n' + stamp + '\t' + s));
span.innerText = (stamp.replace(/[TZ]/g, ' ') + ' ' + s);
cs.appendChild(span);
cs.scrollTop = cs.scrollHeight;
};
// console.log(1, false, 'sss', { ss: 'ss' }, document.createElement('DIV'), document.createTextNode('text'));
// console.log(1, false, 'sss', { ss: 'ss' }, document.createElement('DIV'), document.createTextNode('text'));
// console.log("<br>语言版本: " + browser.language);
// console.log("<br> 是否为移动终端: " + browser.versions.mobile);
// console.log("<br> ios终端: " + browser.versions.ios);
// console.log("<br> android终端: " + browser.versions.android);
// console.log("<br> 是否为iPhone: " + browser.versions.iPhone);
// console.log("<br> 是否iPad: " + browser.versions.iPad);
// console.log("<br>" + navigator.userAgent);
};
// 手机下暂时不出自制的控制台了，因为可以使用webpack-dev-server + weinre 来远程调试
// window.addEventListener('load', () => {
// if (browser.versions.mobile) {
// wrapperConsole4Mobile(console);
// }
// }, false);
</script>
<script id="mobile" type="text/javascript">
var mobile = {
lastKeydownTime: 0,
lastCursorAt: null,
// 苹果手机下，长按删除键会触发fast delete，目前没有好的办法拦截它
// 只好采用这种变通的方式处理
saveBackspaceHold: function () {
if (!browser.versions.iPhone) {
return false;
}
var t = new Date().getTime();
this.lastKeydownTime = t;
var sel = document.getSelection();
if (sel && sel.focusNode && sel.isCollapsed) {
this.lastCursorAt = {
focusNode: sel.focusNode,
focusNodeValue: sel.focusNode && sel.focusNode.nodeType === 3 ? sel.focusNode.nodeValue : false,
focusOffset: sel.focusOffset
};
console.log('save', sel.anchorOffset, __toString(sel.anchorNode))
console.log('save', sel.focusOffset, __toString(sel.focusNode))
} else {
this.lastCursorAt = undefined;
}
},
fixBackspaceHold: function () {
if (!browser.versions.iPhone) {
return false;
}
var sel = document.getSelection();
if (!sel || sel.rangeCount === 0) return false;
var t = new Date().getTime();
console.log('t', t - this.lastKeydownTime);
if (t - this.lastKeydownTime < 150 && this.lastCursorAt) {
try {
console.log(sel.rangeCount)
var rng = sel.getRangeAt(0);
if (this.lastCursorAt.focusNode && this.lastCursorAt.focusNode.nodeType === 3) {
this.lastCursorAt.focusNode.nodeValue = this.lastCursorAt.focusNodeValue;
}
rng.setStart(this.lastCursorAt.focusNode, this.lastCursorAt.focusOffset);
rng.collapse(true);
this.fixSelectionRange(sel, rng);
console.log('restore', sel.anchorOffset, __toString(sel.anchorNode))
console.log('restore', sel.focusOffset, __toString(sel.focusNode))
return true;
}
catch (e) {
console.error('eror', e)
}
}
return false;
},
// 手机下，只修改range不起作用，必须重新sel.setRange一次
fixSelectionRange: function (sel, rng) {
if (browser.versions.mobile) {
sel.empty();
sel.addRange(rng);
}
},
// 手机输入法时，不触发compositionstart和compositionend事件的解决办法
// ascii字符输入时，走的还是char部分
fixCompositionNotWork: function () {
if (browser.versions.mobile) {
__insert();
return true;
}
return false;
},
fixBIU: function(evt) {
// TODO 在编辑器支持添加格式之前
// 手机上暂时禁用BIU，目前在IOS上看到了，Android还没试
if(browser.mobile && ['formatBold', 'formatItalic', 'formatUnderline'].indexOf(evt.inputType) >= 0) {
__prevent(evt);
}
}
};
</script>
<script id="UE.utils" type="text/javascript">
var utils = {
listToMap: function (list) {
if (!list) return {};
list = utils.isArray(list) ? list : list.split(',');
for (var i = 0, ci, obj = {}; ci = list[i++];) {
obj[ci.toUpperCase()] = obj[ci] = 1;
}
return obj;
},
isArray: function (obj) {
return Object.prototype.toString.apply(obj) == '[object Array]';
}
};
</script>
<script id="UE.domUtils" type="text/javascript">
var domUtils = {
// used
findParentByTagName: function (node, tagNames, includeSelf, excludeFn) {
tagNames = utils.listToMap(utils.isArray(tagNames) ? tagNames : [tagNames]);
return domUtils.findParent(node, function (node) {
return tagNames[node.tagName] && !(excludeFn && excludeFn(node));
}, includeSelf);
},
// not used
findParent: function (node, filterFn, includeSelf) {
if (node && !domUtils.isBody(node)) {
node = includeSelf ? node : node.parentNode;
while (node) {
if (!filterFn || filterFn(node) || domUtils.isBody(node)) {
return filterFn && !filterFn(node) && domUtils.isBody(node) ? null : node;
}
node = node.parentNode;
}
}
return null;
},
// not used
isBody: function (node) {
return node && node.nodeType == 1 && node.tagName.toLowerCase() == 'body';
},
// used
isSameElement: function (nodeA, nodeB) {
if (nodeA.tagName != nodeB.tagName) {
return false;
}
var thisAttrs = nodeA.attributes,
otherAttrs = nodeB.attributes;
if (!browser.ie && thisAttrs.length != otherAttrs.length) {
return false;
}
var attrA, attrB, al = 0, bl = 0;
for (var i = 0; attrA = thisAttrs[i++];) {
if (attrA.nodeName == 'style') {
if (attrA.specified) {
al++;
}
if (domUtils.isSameStyle(nodeA, nodeB)) {
continue;
} else {
return false;
}
}
if (browser.ie) {
if (attrA.specified) {
al++;
attrB = otherAttrs.getNamedItem(attrA.nodeName);
} else {
continue;
}
} else {
attrB = nodeB.attributes[attrA.nodeName];
}
if (!attrB.specified || attrA.nodeValue != attrB.nodeValue) {
return false;
}
}
// 有可能attrB的属性包含了attrA的属性之外还有自己的属性
if (browser.ie) {
for (i = 0; attrB = otherAttrs[i++];) {
if (attrB.specified) {
bl++;
}
}
if (al != bl) {
return false;
}
}
return true;
},
isSameStyle: function (nodeA, nodeB) {
var styleA = nodeA.style.cssText.replace(/( ?; ?)/g, ';').replace(/( ?: ?)/g, ':'),
styleB = nodeB.style.cssText.replace(/( ?; ?)/g, ';').replace(/( ?: ?)/g, ':');
if (browser.opera) {
styleA = nodeA.style;
styleB = nodeB.style;
if (styleA.length != styleB.length)
return false;
for (var p in styleA) {
if (/^(\d+|csstext)$/i.test(p)) {
continue;
}
if (styleA[p] != styleB[p]) {
return false;
}
}
return true;
}
if (!styleA || !styleB) {
return styleA == styleB;
}
styleA = styleA.split(';');
styleB = styleB.split(';');
if (styleA.length != styleB.length) {
return false;
}
for (var i = 0, ci; ci = styleA[i++];) {
if (styleB.indexOf(ci) == -1) {
return false;
}
}
return true;
},
};
</script>
<script id="cache" type="text/javascript">
// DELETEME 这个类貌似没有用到
var __cache = {
startContainer: null,
startOffset: -1,
endContainer: null,
endOffset: -1,
collapsed: false,
save: function (sel, toStart) {
if (!sel || sel.rangeCount === 0) return false;
var rng = sel.getRangeAt(0), tmp;
this.startContainer = rng.startContainer;
this.startOffset = rng.startOffset;
if (typeof toStart === 'undefined') {
this.startContainer = rng.startContainer;
this.startOffset = rng.startOffset;
this.endContainer = rng.endContainer;
this.endOffset = rng.endOffset;
this.collapsed = rng.collapsed;
} else if (toStart) {
if (rng.startOffset === 0) {
this.startContainer = this.endContainer = (tmp = rng.startContainer.parentNode);
this.startOffset = this.endOffset = Array.from(tmp.childNodes).indexOf(rng.startContainer);
} else {
this.startContainer = this.endContainer = rng.startContainer;
this.startOffset = this.endOffset = rng.startOffset;
}
this.collapsed = true;
console.log(this)
} else {
this.startContainer = this.endContainer = rng.endContainer;
this.startOffset = this.endOffset = rng.endOffset;
this.collapsed = true;
}
return true;
},
restore: function (sel) {
if (!sel || sel.rangeCount === 0) return false;
var rng = sel.getRangeAt(0);
rng.setStart(this.startContainer, this.startOffset);
rng.setEnd(this.endContainer, this.endOffset);
}
};
</script>
<script id="utils" type="text/javascript">
var __isDel = function (node) {
return node && node.nodeType === 1 && node.tagName === 'DEL' && node;
};
var __inDel = function (node) {
return (node = domUtils.findParentByTagName(node, 'DEL', true));
};
var __isIns = function (node) {
return node && node.nodeType === 1 && node.tagName === 'INS' && node;
};
var __inIns = function (node) {
return (node = domUtils.findParentByTagName(node, 'INS', true));
};
var __isClose = function (node) {
return node.nodeType === 1 && { br: 1, img: 1, hr: 1 }[node.tagName.toLowerCase()];
};
var __isEmpty = function (node) {
if (!node) return false;
else if (node.nodeType === 3) return node.nodeValue.length === 0;
else if (node.nodeType === 1) return !node.firstChild || !Array.from(node.childNodes).some(e => !__isEmpty(e));
else if (node.nodeType === 11) return node.firstChild || !Array.from(node.childNodes).some(e => !__isEmpty(e));
else return false;
};
var __mergeSibling = function (node, ignorePre, ignoreNext) {
function merge(rtl, start, node) {
var next, child = node[start];
if ((next = node[rtl]) && node.nodeType === 3 && next.nodeType === 3) {
__mergeTextSibling(rtl === 'nextSibling' ? node : next);
return;
}
if ((next = node[rtl]) && next.nodeType == 1 && domUtils.isSameElement(node, next)) {
while (next.firstChild) {
if (start == 'firstChild') {
node.insertBefore(next.lastChild, node.firstChild);
} else {
node.appendChild(next.firstChild);
}
}
next.parentNode.removeChild(next);
// merge child
if (child) merge(rtl, start, child);
}
}
!ignorePre && merge('previousSibling', 'firstChild', node);
!ignoreNext && merge('nextSibling', 'lastChild', node);
};
var __mergeTextSibling = function (node) {
var next;
if (node && node.nodeType === 3 && (next = node.nextSibling) && next.nodeType === 3) {
node.nodeValue += next.nodeValue;
next.parentNode.removeChild(next);
}
};
var __mergeDelChilds = function (node) {
var prev = node.firstChild, next;
while (prev && (next = prev.nextSibling)) {
if (__isDel(prev) && __isDel(next)
&& prev.getAttribute('cite') === next.getAttribute('cite')
&& prev.getAttribute('datetime') === next.getAttribute('datetime')) {
while (next.firstChild) {
prev.appendChild(next.firstChild);
}
next.parentNode.removeChild(next);
}
else {
prev = next;
}
}
};
var __toString = function (e) {
if (typeof e === 'object' && e instanceof Array) {
return `[${e.map(__toString).join(',')}]`;
}
return e.nodeType === 3 ? `"${e.nodeValue}"` : e.nodeType === 11 ? Array.from(e.childNodes).reduce((a, e) => {
return a + __toString(e);
}, "") : e.outerHTML;
};
var __date = function () {
return new Date().toISOString().substring(0, 16).replace('T', ' ');
};
// TODO 修改的通用一点
var __isPStart = function (node, offset) {
if (!node) return false;
if (node.nodeType === 3 && offset > 0) return false;
if (__isRoot(node)) return node.childNodes[offset];
var p = domUtils.findParentByTagName(node, 'P');
while (!node.previousSibling && node !== p) {
node = node.parentNode;
}
return node === p && p;
};
var __isPEnd = function (node, offset) {
if (!node) return false;
if (node.nodeType === 3 && offset < node.nodeValue.length) return false;
if (__isRoot(node)) return node.childNodes[offset - 1];
var p = domUtils.findParentByTagName(node, 'P');
while (!node.nextSibling && node !== p) {
node = node.parentNode;
}
return node === p && p;
};
/**
* @param
* 从当前位置拆分两个兄弟节点，一直拆分到tagName指定的父标签（ignoreTagName=true不拆此标签）
* 返回拆分的后面标签
*/
var __splitToTag = function (node, offset, tagName, ignoreTagName) {
if (!node || !tagName) return;
var tag = domUtils.findParentByTagName(node, tagName, true);
if (!tag) return;
var next, child;
while (node !== (ignoreTagName ? tag : tag.parentNode)) {
// 在当前节点之前拆
if (offset === 0) {
offset = Array.from(node.parentNode.childNodes).indexOf(node);
node = node.parentNode;
}
else {
// 拆文本节点
if (node.nodeType === 3) {
next = node.splitText(offset);
if (next.nodeValue.length <= 0) node.parentNode.removeChild(next);
} else if (child = node.childNodes[offset]) {
next = node.cloneNode(false);
node.parentNode.insertBefore(next, node.nextSibling);
while (child = node.childNodes[offset]) { next.appendChild(child); }
}
offset = Array.from(node.parentNode.childNodes).indexOf(node) + 1;
node = node.parentNode;
}
}
return node.childNodes[offset];
};
</script>
<script id="selection" type="text/javascript">
// TODO 重新整理这个函数，尤其是合并
var __visitMultiLineFrag = function (frag) {
return Array.from(frag.childNodes).map(p => {
// 处理本次被删除的段落里的内容
Array.from(p.childNodes).forEach(e => {
// 早前已经删除的内容不用管，不管谁删的
if (__isDel(e)) {
// NOP
}
// 如果是自己插入的内容，则直接删除
else if ((tmp = __isIns(e)) && document.user === tmp.getAttribute('cite')) {
tmp.parentNode.removeChild(tmp);
}
else if (e.nodeType === 1 && e.tagName === 'IMG') {
var info = document.createElement('ABBR');
info.innerText = '[图片已删除]';
info.title = '已删除的图片：' + e.src;
var del = __createDel();
del.appendChild(info);
p.insertBefore(del, e);
p.removeChild(e);
}
// 其他节点全用删除线包括
else {
var del = __createDel();
p.insertBefore(del, e);
del.appendChild(e);
}
});
// 合并相同人和时间的删除标记
__mergeDelChilds(p);
return p;
});
};
var __visitMultiBlockFrag = function (frag) {
Array.from(frag.childNodes).forEach(e => {
if (__isDel(e)) {
__mergeSibling(e, false, true);
}
else if ((tmp = __isIns(e)) && document.user === tmp.getAttribute('cite')) {
frag.removeChild(tmp);
}
else {
var del = __createDel();
frag.insertBefore(del, e);
del.appendChild(e);
__mergeSibling(del, false, true);
}
});
return Array.from(frag.childNodes);
};
// 当前选区是否跨了多行（或多个 <P>）
var __isMultiLineSelection = function () {
var sel = document.getSelection();
if (!sel || sel.rangeCount === 0) return false;
var rng = sel.getRangeAt(0);
var frag = rng.cloneContents();
var bml; // bool multi line
// 跨行删除，frag里必然都是P， 这是一种判断方式
bml = Array.from(frag.childNodes).reduce((a, c) => a && c.nodeType === 1 && c.tagName === 'P', true);
if (!bml) return false;
// 还可以根据range的端点来判断
// console.log(rng.startContainer, rng.startOffset, rng.endContainer, rng.endOffset);
bml = (__isRoot(rng.startContainer) && rng.startOffset !== rng.endOffset)
|| ((tmp = domUtils.findParentByTagName(rng.startContainer, 'P')) && tmp !== domUtils.findParentByTagName(rng.endContainer, 'P'));
return bml;
};
// 收缩焦点到最小位置，比如TextNode，BR等
// 尚未处理非collapsed选区
var __shrink = function () {
var sel = document.getSelection();
if (!sel || sel.rangeCount === 0) return;
var rng = sel.getRangeAt(0);
if (!rng.collapsed) {
console.error('非collapsed选区尚不支持收缩');
return;
}
var start = rng.startContainer, offset = rng.startOffset;
if (start.nodeType === 3 || __isClose(start)) return;
while (start.nodeType === 1 && start.firstChild) {
if (offset <= 0) {
start = start.firstChild;
offset = 0;
} else if (offset >= start.childNodes.length) {
start = start.lastChild;
offset = start.nodeType === 3 ? start.nodeValue.length : start.childNodes.length;
} else {
start = start.childNodes[offset];
start = 0;
}
}
if (start !== rng.startContainer) {
rng.setStart(start, offset);
rng.collapse(true);
mobile.fixSelectionRange(sel, rng);
}
};
</script>
<script id="core" type="text/javascript">
// 按键是否形成输入（包含回车和空格）
var __isCharKeyDown = function (evt) {
var keyCode = evt.keyCode || evt.which;
var isChar =
(keyCode > 47 && keyCode < 58) || // number keys
keyCode === 32 || keyCode === 13 || // spacebar & return key(s) (if you want to allow carriage returns)
(keyCode > 64 && keyCode < 91) || // letter keys
(keyCode > 95 && keyCode < 112) || // numpad keys
(keyCode > 185 && keyCode < 193) || // ;=,-./` (in order)
(keyCode > 218 && keyCode < 223); // [\]' (in order)
if (isChar) {
//// character key
// will delete all selected
// console.log('character')
} else {
//// control key
// only delete and backspace will delete all selected
// console.log('control', evt)
}
return isChar;
};
// FIXME
var __isRoot = function (node) {
return node && node.nodeType === 1 && node.id === 'editor';
};
var __createDel = function () {
var del = document.createElement('DEL');
del.setAttribute('cite', document.user);
del.setAttribute('datetime', __date());
return del;
};
var __createIns = function (user, datetime) {
var ins = document.createElement('INS');
ins.setAttribute('cite', user || document.user);
ins.setAttribute('datetime', datetime || __date());
return ins;
};
var __prevent = function (evt) {
typeof evt.returnValue !== 'cancelBubble' && (evt.cancelBubble = true);
typeof evt.returnValue !== 'undefined' && (evt.returnValue = false);
evt.preventDefault && evt.preventDefault();
evt.stopPropagation && evt.stopPropagation();
};
// TODO 这将是一个不包含undo/redo的实现
var __delete = function (cursorToStart) {
var sel = document.getSelection();
if (!sel) {
console.warn('selection is null');
return;
}
// console.log('anchor', sel.anchorOffset, sel.anchorNode, __toString(sel.anchorNode));
// console.log('focus', sel.focusOffset, sel.focusNode, __toString(sel.focusNode));
if (sel.rangeCount === 0) {
console.warn('selection\'s rangeCount is 0');
return;
}
var rng = sel.getRangeAt(0);
if (rng.collapsed) return;
var start = rng.startContainer, end = rng.endContainer, tmp;
// console.log('before delete\n', rng.startOffset, __toString(start), '\n', rng.endOffset, __toString(end));
if (typeof cursorToStart === 'undefined') {
cursorToStart = sel.focusNode === start && sel.focusOffset === rng.startOffset;
}
var frag = rng.cloneContents();
// Array.from(frag.childNodes).forEach((e, i) => {
// console.log(`frag[${i}]`, __toString(e));
// });
var mline = __isMultiLineSelection(), mblock = (start !== end);
// 跨行删除
if (mline) {
if (frag.childNodes.length === 2 && __isEmpty(frag.firstChild) && __isEmpty(frag.lastChild)) {
// 删除空行
console.info('delete a line seperator');
rng.collapse(cursorToStart);
mobile.fixSelectionRange(sel, rng);
return;
}
// 保存删除前的状态
var delFromPHead = __isPStart(start, rng.startOffset), delToPTail = __isPEnd(end, rng.endOffset);
// 删除
document.execCommand('delete', false, null);
rng = sel.getRangeAt(0);
start = rng.startContainer;
end = rng.endContainer;
// console.log('after delete\n', rng.startOffset, __toString(start), '\n', rng.endOffset, __toString(end));
// 插入<p><del></p>
// 1. 从某行首开始删的，插入在此行之前
// 2. 从某行中开始删的，先拆此行，然后插入在后行之前
var dps = __visitMultiLineFrag(frag); // deleted p lines
var pnext = delFromPHead || __splitToTag(start, rng.startOffset, 'P');
// FIXME
var parent = pnext ? pnext.parentNode : document.getElementById('editor');
Array.from(dps).reverse().forEach(p => pnext = parent.insertBefore(p, pnext));
// 整理焦点
if (cursorToStart) {
// 从行首开始删的，焦点落在第一个<p><del></p>行首，否则落在所有<p><del></p>的前一行尾
delFromPHead ? rng.setStart(start = dps[0], 0) : rng.setStart(start = dps[0].previousSibling, start.childNodes.length)
} else {
// 焦点落在最后一个<p><del></p>的行尾即可
rng.setStart(start = dps[dps.length - 1], start.childNodes.length)
}
rng.collapse(true);
mobile.fixSelectionRange(sel, rng);
__shrink();
rng = sel.getRangeAt(0);
start = rng.startContainer;
end = rng.endContainer;
// console.log('after shrink\n', rng.startOffset, __toString(start), '\n', rng.endOffset, __toString(end));
// 合并第一<p><del></p>行，往前
if (!delFromPHead) {
__mergeSibling(dps[0].previousSibling, true, false);
}
// 合并最后<p><del></p>行，往后
if (!delToPTail) {
__mergeSibling(dps[dps.length - 1], true, false);
}
// 删除最后一个空行<p><br></p>
if (delFromPHead && delToPTail) {
delFromPHead.parentNode.removeChild(delFromPHead);
}
}
// 行内多节点删除
else if (mblock) {
// 删除
document.execCommand('delete', false, null);
rng = sel.getRangeAt(0);
start = rng.startContainer;
end = rng.endContainer;
// console.log('after delete\n', rng.startOffset, __toString(start), '\n', rng.endOffset, __toString(end));
// 插入<del>
var dbs = __visitMultiBlockFrag(frag); // deleted blocks
var bnext;
if (tmp = __inDel(start)) bnext = __splitToTag(start, rng.startOffset, 'DEL') || tmp.nextSibling;
else if (tmp = __inIns(start)) bnext = __splitToTag(start, rng.startOffset, 'INS') || tmp.nextSibling;
// TODO still a text in span in p ??
else if (start.nodeType === 3) bnext = start.splitText(rng.startOffset);
else if (start.nodeType === 1 && start.tagName === 'P') {
bnext = start.childNodes[rng.startOffset], tmp = bnext;
// TODO remove br
}
else {
console.error('not supported yet!');
return;
}
Array.from(dbs).reverse().forEach(b => bnext = bnext.parentNode.insertBefore(b, bnext));
// 整理焦点
if (cursorToStart) {
// 从行首开始删的，焦点落在第一个<p><del></p>行首，否则落在所有<p><del></p>的前一行尾
// rng.setStart(start = dbs[0], 0);
if (tmp = dbs[0].previousSibling) rng.setStart(start = tmp, start.nodeType === 3 ? start.nodeValue.length : start.childNodes.length);
else rng.setStart(dbs[0], 0);
} else {
// 焦点落在最后一个<p><del></p>的行尾即可
rng.setStart(start = dbs[dbs.length - 1], start.nodeType === 3 ? start.nodeValue.length : start.childNodes.length)
}
rng.collapse(true);
mobile.fixSelectionRange(sel, rng);
__shrink();
rng = sel.getRangeAt(0);
start = rng.startContainer;
end = rng.endContainer;
// console.log('after shrink\n', rng.startOffset, __toString(start), '\n', rng.endOffset, __toString(end));
// TODO 合并前后的删除节点
__mergeSibling(dbs[0], false, true);
__mergeSibling(dbs[dbs.length - 1], true, false);
}
// 行内单节点内的删除
else {
if (__inDel(start)) {
// 仅移动光标，选区闭合
rng.collapse(cursorToStart);
mobile.fixSelectionRange(sel, rng);
}
else if ((tmp = __inIns(start)) && document.user === tmp.getAttribute('cite')) {
// 仅删除，选区闭合
document.execCommand('delete', false, null);
}
else if (tmp = domUtils.findParentByTagName(start, 'P', true)) {
// 保存信息，删除的是别人的插入
var ins = __inIns(start), p = tmp;
// 删除
document.execCommand('delete', false, null);
rng = sel.getRangeAt(0);
start = rng.startContainer;
end = rng.endContainer;
// console.log('after delete\n', rng.startOffset, __toString(start), '\n', rng.endOffset, __toString(end));