A new Text Box for PKU BBS
Version au
// ==UserScript==
// @name bdwmTextBox
// @namespace bdwmTextBox
// @description A new Text Box for PKU BBS
// @include *bdwm.net/bbs/bbspst.php*
// @version 0.1alpha
// @grant none
// ==/UserScript==
/**
* cursorPosition Object
*
* Created by Blank Zheng on 2010/11/12.
* Copyright (c) 2010 PlanABC.net. All rights reserved.
*
* The copyrights embodied in the content of this file are licensed under the BSD (revised) open source license.
*/
var cursorPosition = {
get: function (textarea) {
var rangeData = {text: "", start: 0, end: 0 };
if (textarea.setSelectionRange) { // W3C
textarea.focus();
rangeData.start= textarea.selectionStart;
rangeData.end = textarea.selectionEnd;
rangeData.text = (rangeData.start != rangeData.end) ? textarea.value.substring(rangeData.start, rangeData.end): "";
}
return rangeData;
},
set: function (textarea, rangeData) {
if(!rangeData) {
alert("You must get cursor position first.")
}
textarea.focus();
if (textarea.setSelectionRange) { // W3C
textarea.setSelectionRange(rangeData.start, rangeData.end);
}
},
add: function (textarea, rangeData, text) {
var oValue, nValue, nStart, nEnd, st;
this.set(textarea, rangeData);
if (textarea.setSelectionRange) { // W3C
oValue = textarea.value;
nValue = oValue.substring(0, rangeData.start) + text + oValue.substring(rangeData.end);
nStart = nEnd = rangeData.start + text.length;
st = textarea.scrollTop;
textarea.value = nValue;
// Fixbug:
// After textarea.values = nValue, scrollTop value to 0
if(textarea.scrollTop != st) {
textarea.scrollTop = st;
}
textarea.setSelectionRange(nStart, nEnd);
}
}
}
function setTextAttr(textarea, attr) {
range = cursorPosition.get(textarea);
nText = "\033[" + attr + "m" + range.text + "\033[m";
cursorPosition.add(textarea, range, nText);
}
// 添加颜色下拉条
function addSelect(form, id, num, name) {
var colors = [
'黑色',
'红色',
'绿色',
'黄色',
'蓝色',
'品红',
'蓝绿',
'白色'
];
// 添加标题
var title = document.createElement('span');
title.innerHTML = name;
form.appendChild(title);
var mySelect = document.createElement('select');
mySelect.id = id;
for (var i = 0; i < colors.length; i++) {
var opt = document.createElement('option');
opt.value = num + i;
opt.innerHTML = colors[i];
mySelect.appendChild(opt);
}
form.appendChild(mySelect);
return mySelect;
}
// 建立表格
function createForm(textarea) {
var myform = document.createElement('form');
var sfg = addSelect(myform, 'fgcolor', 30, '前景色');
var sbg = addSelect(myform, 'bgcolor', 40, '背景色');
// 确定按钮
var btn = document.createElement('input');
btn.type = 'button';
btn.value = '确定';
btn.onclick = function () {
var attr = sbg.value + ';' + sfg.value;
setTextAttr(textarea, attr);
};
myform.appendChild(btn);
// 关闭按钮
var closeBtn = document.createElement('input');
closeBtn.type = 'button';
closeBtn.value = '关闭';
closeBtn.onclick = function() {
this.parentNode.parentNode.style.display = "none";
};
myform.appendChild(closeBtn);
return myform;
}
console.log('script begins');
// 获取文字窗口
var TextBoxes = document.getElementsByName('text');
if (TextBoxes.length == 0) {
alert('No such text box!');
}
var TextBox = TextBoxes[0];
//alert(TextBox.rows);
TextBox.rows = '10';
//TextBox.value = navigator.userAgent;
// 建立浮动窗体
var mydiv = document.createElement('div');
mydiv.style.float = "left";
mydiv.style.height = "30px";
mydiv.style.width = "400px";
mydiv.style.position = "fixed";
mydiv.style.left = "30%";
mydiv.style.top = "40%";
mydiv.style.backgroundColor = "#89e842";
mydiv.style.display = "none";
mydiv.appendChild(createForm(TextBox));
document.getElementById('postfrm').appendChild(mydiv);
// 添加按钮
var Buttons = document.getElementById('postfrm').getElementsByTagName('input');
var postButton;
for (var i = 0; i<Buttons.length; i++){
//alert(Buttons[i].value);
if (Buttons[i].value == '发表'){
postButton = Buttons[i];
break;
}
}
var attrBtn = document.createElement('input')
attrBtn.type='button';
attrBtn.onclick = function(){
console.log("Button clicked");
mydiv.style.display = "block";
};
attrBtn.value = '设置文字属性';
postButton.parentNode.insertBefore(attrBtn, postButton.nextSibling);