为了今后随笔中所带的代码更具特色一些,特给代码格式来个“Copy Code”功能,允许直接将代码内容拷贝到剪贴板上。
测试用程序:
程序1
using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
Console.Write("Please Input Some Words:");
string inputData = Console.ReadLine();
Console.WriteLine(inputData);
Console.Read();
}
}
}
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
Console.Write("Please Input Some Words:");
string inputData = Console.ReadLine();
Console.WriteLine(inputData);
Console.Read();
}
}
}
测试用XML:
XML
<?xml version="1.0" encoding="gb2312"?>
<root >
<!-- 这是一段注释 -->
<elements >
<name id="Component" >
Zhenyulu
</name>
<url >
http://www.cnblogs.com/zhenyulu
</url>
</elements>
</root>
<root >
<!-- 这是一段注释 -->
<elements >
<name id="Component" >
Zhenyulu
</name>
<url >
http://www.cnblogs.com/zhenyulu
</url>
</elements>
</root>
感谢大家的帮助,我对CopyCode功能又改进了一番,终于可以在IE和FireFox下都可以拷贝代码到剪贴板上了。将文中用到的JavaScrip代码贴上来供大家参考:
程序
<script type="text/javascript">/*<![CDATA[*/
if(typeof(HTMLElement)!="undefined" && !window.opera)
{
HTMLElement.prototype.__defineGetter__("parentElement", function ()
{
if (this.parentNode == this.ownerDocument) return null;
return this.parentNode;
});
}
HTMLElement.prototype.innerHTML getter = function(){
return getInnerHTML(this);
}
/*]]>*/
</script>
<script language="javascript">
function CopyCode(key)
{
var divElements = document.getElementsByTagName("div");
var i;
occur = 0;
for(i = 0; i < divElements.length; ++i)
{
if(key.parentElement.parentElement.parentElement == divElements[i].parentElement)
{
if(occur == 1)
{
if(navigator.appName.indexOf('Microsoft') != -1)
copyToClipboard(divElements[i].innerText);
else
copyToClipboard(Html2Txt(divElements[i].innerHTML));
}
occur++;
}
}
}
function Html2Txt(htmlText)
{
str = htmlText.replace(/\r\n/g, " ");
str = str.replace(/\r/g, " ");
str = str.replace(/\n/g, " ");
str = str.replace(/\t/g, "");
str = str.replace(/<BR>/gi,"\r\n");
str = str.replace(/<[^>]+?>/g,"");
str = str.replace(/ /g, " ");
str = str.replace(/>/g, ">");
str = str.replace(/</g, "<");
str = str.replace(/&/g, "&");
return str;
}
function copyToClipboard(txt)
{
if(window.clipboardData)
{
window.clipboardData.clearData();
window.clipboardData.setData("Text", txt);
}
else if(navigator.userAgent.indexOf("Opera") != -1)
{
window.location = txt;
}
else if (window.netscape)
{
try
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
}
catch (e)
{
alert("您的firefox安全限制限制您进行剪贴板操作,请在地址栏中输入“about:config”将“signed.applets.codebase_principal_support”设置为“true”之后重试");
return false;
}
var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
if (!clip)
return;
var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
if (!trans)
return;
trans.addDataFlavor('text/unicode');
var str = new Object();
var len = new Object();
var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
var copytext = txt;
str.data = copytext;
trans.setTransferData("text/unicode",str,copytext.length*2);
var clipid = Components.interfaces.nsIClipboard;
if (!clip)
return false;
clip.setData(trans,null,clipid.kGlobalClipboard);
}
}
</script>
if(typeof(HTMLElement)!="undefined" && !window.opera)
{
HTMLElement.prototype.__defineGetter__("parentElement", function ()
{
if (this.parentNode == this.ownerDocument) return null;
return this.parentNode;
});
}
HTMLElement.prototype.innerHTML getter = function(){
return getInnerHTML(this);
}
/*]]>*/
</script>
<script language="javascript">
function CopyCode(key)
{
var divElements = document.getElementsByTagName("div");
var i;
occur = 0;
for(i = 0; i < divElements.length; ++i)
{
if(key.parentElement.parentElement.parentElement == divElements[i].parentElement)
{
if(occur == 1)
{
if(navigator.appName.indexOf('Microsoft') != -1)
copyToClipboard(divElements[i].innerText);
else
copyToClipboard(Html2Txt(divElements[i].innerHTML));
}
occur++;
}
}
}
function Html2Txt(htmlText)
{
str = htmlText.replace(/\r\n/g, " ");
str = str.replace(/\r/g, " ");
str = str.replace(/\n/g, " ");
str = str.replace(/\t/g, "");
str = str.replace(/<BR>/gi,"\r\n");
str = str.replace(/<[^>]+?>/g,"");
str = str.replace(/ /g, " ");
str = str.replace(/>/g, ">");
str = str.replace(/</g, "<");
str = str.replace(/&/g, "&");
return str;
}
function copyToClipboard(txt)
{
if(window.clipboardData)
{
window.clipboardData.clearData();
window.clipboardData.setData("Text", txt);
}
else if(navigator.userAgent.indexOf("Opera") != -1)
{
window.location = txt;
}
else if (window.netscape)
{
try
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
}
catch (e)
{
alert("您的firefox安全限制限制您进行剪贴板操作,请在地址栏中输入“about:config”将“signed.applets.codebase_principal_support”设置为“true”之后重试");
return false;
}
var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
if (!clip)
return;
var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
if (!trans)
return;
trans.addDataFlavor('text/unicode');
var str = new Object();
var len = new Object();
var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
var copytext = txt;
str.data = copytext;
trans.setTransferData("text/unicode",str,copytext.length*2);
var clipid = Components.interfaces.nsIClipboard;
if (!clip)
return false;
clip.setData(trans,null,clipid.kGlobalClipboard);
}
}
</script>
注意:在FireFox中我们可以使用“innerContent”属性读取文本内容,它同IE浏览器中的innerText属性是相对应的。但是实际出来的效果非常差劲,所以我干脆自己给FireFox实现innerText功能。在上面代码中分两步走:1)扩展HTMLElement属性,提供innerHTML属性。2)根据innerHTML读取到的信息去掉不必要标记内容,整理成文本信息。(就是Html2Txt函数)
由于本人对JavaScript并不是很在行,所以上面代码如果有什么问题还望不吝赐教。
在此,感谢asdf[未登录]、Jeffrey Zhao、luaiping、高海东对完善本文代码的帮助!