用户:StarHeartHunt/js/pair.js
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/*
来源: https://zh.moegirl.org/User:东东君
载入该插件后，将对wikitext语法所使用的符号和html标签进行成对的补全。
该插件并不会计算整个源代码中的html标签配对情况，标签的补全仅发生在输入大于号(>)时，补全距离最近的html标签。
在输入无其他信息的标签后（如：<div></div>），若按下退格（backspace）键，可以直接删除这一组标签。
注意：因为每次输入时都会对整个源代码进行查找匹配，为了防止卡顿，默认限制为500个字符，但这会导致当标签过长（例如在节点上添加了大量css代码）时，无法自动补全。
过长的源代码会使输入时性能大幅下降，造成卡顿。当总字符数大于20000时，将自动关闭补全，请合理使用段落编辑的功能。
*/
$(function(){
if(/action=(edit|submit)/.test(location.href)){
var wpText = $('#wpTextbox1')
if(wpText.val().length > 20000){
mw.notify('因源代码过长，补全功能被关闭！', { type : 'warn' })
return
}
var retrospect = 500
var pattern = [
['-{', '}-'],
['[', ']'],
['{', '}'],
["'", "'"],
['"', '"'],
['(', ')'],
['<!--', '-->']
]
//光标后插入信息
function insertText(obj, str){
var content = obj.value,
position = obj.selectionEnd,
left = content.substring(0, position),
right = content.substring(position)
obj.value = left + str + right
}
var original = null
wpText.one('click', function(){
original = {
code : wpText.val(),
start : wpText[0].selectionStart,
end : wpText[0].selectionEnd
}
})
// 缓存输入内容 & 判断
var end = 0,
thisLength = 0,
lastLength = 0,
code = '',
thisCode = '',
deletedKeyword = '',
// 需要暂停补全的状态
typewritingMode = false,
cutPaste = false,
selectInput = false,
selectDelete = false,
inputFinish = false
var codeSave = [{
code : wpText.val(),
start : wpText[0].selectionStart,
end : wpText[0].selectionEnd
}],
inputMark = false
function selectionReset(){
end = wpText[0].selectionEnd
lastLength = wpText.val().length
}
wpText.click(function(){
selectionReset()
}).keyup(function(e){
if(e.keyCode > 36 && e.keyCode < 41){
selectionReset()
code = ''
}
}).on('keydown keyup', function(e){
if(e.keyCode == 8){
var subStart = (this.selectionEnd - 1) < 0 ? 0 : (this.selectionEnd - 1)
var left = thisCode.substring(subStart, this.selectionEnd)
deletedKeyword = left
selectionReset()
}
}).on('compositionstart', function(){
typewritingMode = true
}).on('compositionend', function(){
typewritingMode = false
inputFinish = true
$(this).trigger('input')
selectionReset()
}).on('cut paste', function(){
cutPaste = true
codeSave.push({
code : wpText.val(),
start : wpText[0].selectionStart,
end : wpText[0].selectionEnd
})
inputMark = false
setTimeout(selectionReset, 0)
}).on('keydown', function(e){
selectInput = !! document.getSelection().toString()
if(selectInput){ end = wpText[0].selectionStart}
if(selectInput && (e.keyCode == 8 || e.keyCode == 46)){ selectDelete = true }
}).on('input', function(){
;(function(_this){
if(typewritingMode){ return }
if(inputFinish){ inputFinish = false; return }
if(cutPaste){ cutPaste = false; return }
if(selectDelete){ selectDelete = false; return }
thisCode = $(_this).val()
var right = thisCode.substring(end)
thisLength = $(_this).val().length
if(thisLength - lastLength == 1 || selectInput){
code += right.substring(0, 1)
}else{
code = ''
if(lastLength - thisLength == 1){
var subStart = (_this.selectionEnd - 20) < 0 ? 0 : (_this.selectionEnd - 20),
subEnd = (_this.selectionEnd + 20) > thisLength ? thisLength : (_this.selectionEnd + 20)
var subLeft = thisCode.substring(0, subStart),
subRight = thisCode.substring(subEnd)
var left = thisCode.substring(subStart, _this.selectionEnd),
right = thisCode.substring(_this.selectionEnd, subEnd),
leftRE = /([\s\S]*)<(.+)$/,
rightRE = /^\<\/(.+?)>([\s\S]*)/
var tagLeft = left.replace(leftRE, '$2')
var tagRight = right.replace(rightRE, '$1')
if(tagLeft == tagRight){
var leftCode = left.replace(leftRE, '$1')
var rightCode = right.replace(rightRE, '$2')
$(_this).val(subLeft + leftCode + rightCode + subRight)
var cursorPos = new String(subLeft + leftCode).length
_this.selectionStart = _this.selectionEnd = cursorPos
}
$.each(pattern, function(){
var $this = wpText[0]
if(lastLength - thisLength == 1){
var subStart = $this.selectionEnd < 0 ? 0 : $this.selectionEnd
var subEnd = ($this.selectionEnd + 1) > thisLength ? thisLength : ($this.selectionEnd + 1)
$this.selectionEnd == subEnd && subEnd++
var subLeft = thisCode.substring(0, $this.selectionEnd),
subRight = thisCode.substring(subEnd)
var left = thisCode.substring(subStart, $this.selectionEnd),
right = thisCode.substring($this.selectionEnd, subEnd)
if(deletedKeyword == this[0] && right == this[1]){
$($this).val(subLeft + subRight)
$this.selectionStart = $this.selectionEnd = subLeft.length
selectionReset()
}
}
})
}
}
function pair(keyword, char, num){
if(code.indexOf(keyword) != -1){
var num = num || char.length
var position = wpText[0].selectionEnd
insertText(wpText[0], char)
wpText[0].selectionStart = wpText[0].selectionEnd = position
selectionReset()
code = ''
}
}
function addPair(arr){
$.each(arr, function(){
pair(this[0], this[1], this[2])
})
}
selectionReset()
addPair(pattern)
// 配对标签
if(code.indexOf('>') != -1){
var start = (end - retrospect) < 0 ? 0 : (end - retrospect)
var left = wpText.val().substring(start, end)
var ptn = /[\s\S]*<((?!br|hr|img|references|templatestyles|\!--|\/|\>)[^\s<>]+)[^>]*?>$/
if(ptn.test(left)){
var tagEnd = '</' + left.replace(ptn, '$1') + '>'
var position = wpText[0].selectionEnd
insertText(wpText[0], tagEnd)
wpText[0].selectionStart = wpText[0].selectionEnd = position
selectionReset()
code = ''
}
}
})(this)
codeSave.push({
code : wpText.val(),
start : wpText[0].selectionStart,
end : wpText[0].selectionEnd
})
inputMark = true
input = false
})
wpText.on('keydown', function(e){
if(e.ctrlKey && e.keyCode == 90){
e.preventDefault()
if(inputMark){
codeSave.pop()
inputMark = false
}
var history = codeSave.pop() || original
if(history){
wpText.val(history.code).focus()
wpText[0].selectionStart = history.start
wpText[0].selectionEnd = history.end
}
}
})
}
})