FCK添加远程图片自动下载
1.修改fckconfig.js中FCKConfig.ToolbarSets["Default"]加入工具条，例如添加：SaveRemoteImage
2.修改lang下面的zh-cn.js,添加对应的中文，例如：SaveRemoteImage："保存远程图片"
3.在plugins下新建文件夹SaveRemoteImage，SaveRemoteImage下新建文件夹images,将按钮图片remote.gif放在此文件夹下。
4.修改/fckeditor/editor/js目录下的fckeditorcode_ie.js和fckeditorcode_gecko.js两个文件,做以下相同的修改：
找到default:if (FCKRegexLib.NamedCommands.test(A)) B=new FCKNamedCommand(A);else{alert(FCKLang.UnknownCommand.replace(/%1/g,A));return null;}};在此句之前增加"case 'RunCode':B=new FCKDialogCom('SaveRemoteImage,FCKLang.SaveRemoteImage,
'plugins/saveremoteImage/SaveRemoteImage.aspx.html',500,300);break;"
找到default:alert(FCKLang.UnknownToolbarItem.replace(/%1/g,A)); 在此句之前增加"case 'SaveRemoteImage':B=new FCKToolbarButton('SaveRemoteImage,FCKLang.SaveRemoteImageBtn, '保存远程图片');B.IconPath = FCKPlugins.Items['saveremoteimage'].Path + 'images/remote.gif' ;break;"
5.在SaveRemoteImage下新建文件fckplugin.js,代码如下
FCKCommands.RegisterCommand(
'SaveRemoteImage',
new FCKDialogCommand( 'SaveRemoteImage',
FCKLang.SaveRemoteImageBtn,
FCKPlugins.Items['saveremoteimage'].Path + 'saveremoteimage.aspx',
350,
200 )
) ;
6.SaveRemoteImage下新建文件savemoteImage.aspx，代码如下：
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Net" %>
<%@ Implements Interface="System.Web.UI.ICallbackEventHandler" %>
<script runat="server">
/// <summary>
/// 保存目录
/// </summary>
private string savePath = null;
private const string DEFAULT_USER_FILES_PATH = "/UserFiles/";
/// <summary>
/// 允许下载的文件扩展名
/// </summary>
private static readonly string[] allowImageExtension = new string[] { ".jpg", ".jpeg", ".png", ".gif", ".bmp" };
/// <summary>
/// 网站主机名
/// </summary>
private string[] localhost;
private string localImageSrc = string.Empty;
private void Page_Load(object obj, EventArgs args)
{
#region 得到FckEditor配置的上传路径
savePath = (string)Application["FCKeditor:UserFilesPath"];
// Try to get from the "Session".
if (savePath == null || savePath.Length == 0)
{
savePath = (string)Session["FCKeditor:UserFilesPath"];
// Try to get from the Web.config file.
if (savePath == null || savePath.Length == 0)
{
savePath = System.Configuration.ConfigurationSettings.AppSettings["FCKeditor:UserFilesPath"];
// Otherwise use the default value.
if (savePath == null || savePath.Length == 0)
savePath = DEFAULT_USER_FILES_PATH;
// Try to get from the URL.
if (savePath == null || savePath.Length == 0)
{
savePath = Request.QueryString["ServerPath"];
}
}
}
// Check that the user path ends with slash ("/")
if (!savePath.EndsWith("/"))
savePath += "/";
#endregion
localhost = new string[] { "localhost", "127.0.0.1", Request.Url.Host };
if (!Page.IsPostBack)
{
Response.Write("<script>var localHost=\"http://" + Request.Url.Host + "\";</" + "script>");
ClientScriptManager csm = Page.ClientScript;
string scripCallServerDownLoad = csm.GetCallbackEventReference(this, "args", "_ReceiveServerData", "context");
string callbackScriptDwonLoad = "function _CallServerDownLoad(args , context) {" + scripCallServerDownLoad + "; }";
if (!csm.IsClientScriptBlockRegistered("_CallServerDownLoad"))
{
csm.RegisterClientScriptBlock(this.GetType(), "_CallServerDownLoad", callbackScriptDwonLoad, true);
}
}
}
/// <summary>
/// 返回数据
/// </summary>
/// <remarks>如果处理过程中出现错误，则仍然返回远程路径</remarks>
/// <returns>服务器端处理后的本地图片路径</returns>
public string GetCallbackResult()
{
return localImageSrc;
}
/// <summary>
/// 处理回调事件
/// </summary>
/// <param name="eventArgument">一个字符串，表示要传递到事件处理程序的事件参数</param>
public void RaiseCallbackEvent(string eventArgument)
{
string remoteImageSrc = eventArgument;
string fileName = remoteImageSrc.Substring(remoteImageSrc.LastIndexOf("/") + 1);
string ext = System.IO.Path.GetExtension(fileName);
if (!IsAllowedDownloadFile(ext))
{
//非指定类型图片不进行下载，直接返回原地址。
localImageSrc = remoteImageSrc;
return;
}
Uri uri = new Uri(remoteImageSrc);
if (IsLocalSource(uri))
{
//本地（本网站下）图片不进行下载，直接返回原地址。
localImageSrc = remoteImageSrc;
return;
}
try
{
//自动创建一个目录。
DateTime now = DateTime.Now;
string datePath = DateTime.Now.ToString("yyyyMMdd");
string localDirectory = System.IO.Path.Combine(Server.MapPath(savePath), datePath);
if (!System.IO.Directory.Exists(localDirectory))
{
System.IO.Directory.CreateDirectory(localDirectory);
}
string localFilePath = System.IO.Path.Combine(localDirectory, fileName);
//不存在同名文件则开始下载，若已经存在则不下载该文件，直接返回已有文件路径。
if (!System.IO.File.Exists(localFilePath))
{
Client.DownloadFile(uri, localFilePath);
}
localImageSrc = savePath + datePath + "/" + fileName;
}
catch
{
localImageSrc = remoteImageSrc;
}
}
private WebClient client;
/// <summary>
/// <see cref="System.Net.WebClient"/>
/// </summary>
public WebClient Client
{
get
{
if (client != null)
{
return client;
}
client = new WebClient();
client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2;)");
return client;
}
}
/// <summary>
/// 判断Uri是否为本地路径
/// </summary>
/// <param name="uri"></param>
/// <returns></returns>
private bool IsLocalSource(Uri uri)
{
for (int i = localhost.Length; --i >= 0; )
{
if (localhost[i].ToLower() == uri.Host.ToLower())
{
return true;
}
}
return false;
}
/// <summary>
/// 检测文件类型是否为允许下载的文件类型
/// </summary>
/// <param name="extension">扩展名 eg: ".jpg"</param>
/// <returns></returns>
private bool IsAllowedDownloadFile(string extension)
{
for (int i = allowImageExtension.Length; --i >= 0; )
{
if (allowImageExtension[i].ToLower() == extension.ToLower())
{
return true;
}
}
return false;
}
</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>保存远程图片</title>
<style type="text/css">
body { margin: 0px; overflow: hidden; background-color: buttonface; }
td { font-size: 11pt; font-family: Arial;text-align: left;}
#domProgressBarId{
width: 0%;
height: 15px;
border-right: buttonhighlight 1px solid;
border-top: buttonshadow 1px solid;
border-left: buttonshadow 1px solid;
border-bottom: buttonhighlight 1px solid;
background-color: highlight;
}
</style>
<script type="text/javascript" language="javascript">
var RemoteImageRubber = function ( remoteSrcList )
{
this._remoteSrcList = remoteSrcList;
this._totalFilesCount = remoteSrcList.length;
}
RemoteImageRubber.prototype.CurrentPercent = function()
{
return Math.round( 100 * (1- this.CurrentFilesCount() / this.TotalFilesCount() ) )+"%";
}
RemoteImageRubber.prototype.TotalFilesCount = function()
{
return this._totalFilesCount;
}
RemoteImageRubber.prototype.CurrentFilesCount = function()
{
return this._remoteSrcList.length;
}
RemoteImageRubber.prototype.NextFile = function ()
{
if(this._remoteSrcList.length >0)
{
var currentRemoteSrc = this._remoteSrcList.shift();
_PreCallServer(currentRemoteSrc);
}
}
</script>
<script type="text/javascript" language="javascript">
var oEditor;
var domProgressBar;
var domCurrentFile;
var domAllFilesCount;
var domAlreadyDownloadFilesCount;
var imageUrls = new Array();
var remoteList = new Array();
var localList = new Array();
var progressBar;
function Ok()
{
var _imgIndex;
for(_imgIndex = 0; _imgIndex < imageUrls.length; _imgIndex ++)
{
imageUrls[_imgIndex].src = localList[_imgIndex];
imageUrls[_imgIndex].setAttribute("_fcksavedurl", localList[_imgIndex], 0) ;
}
return true ;
}
</script>
<script language="javascript" type="text/javascript">
function _PreCallServer(currentRemoteSrc)
{
var start = currentRemoteSrc.lastIndexOf("/") + 1;
var end = currentRemoteSrc.length - currentRemoteSrc.lastIndexOf("/");
var currentFileName = currentRemoteSrc.substr(start,end);
domCurrentFile.innerHTML = currentFileName;
_CallServerDownLoad(currentRemoteSrc,'');
}
function _ReceiveServerData(receiveValue ,context)
{
if(receiveValue)
{
var localSrc = receiveValue;
localList.push(localSrc);
domAlreadyDownloadFilesCount.innerHTML = progressBar.TotalFilesCount() - progressBar.CurrentFilesCount();
domProgressBar.style.width = progressBar.CurrentPercent();
if( progressBar.CurrentFilesCount() > 0 )
{
window.setTimeout("progressBar.NextFile()",0);
}
}
if(progressBar.CurrentFilesCount() == 0)
{
window.setTimeout("_reFlush()",500)
}
}
function _StartDownLoad()
{
var imageUrlss = oEditor.EditorDocument.body.getElementsByTagName("img");
var m;
var w = 0;
for(m = 0; m < imageUrlss.length; m ++)
{
if(imageUrlss[m].src.indexOf(localHost) != 0)
{
remoteList[w] = imageUrlss[m].src;
imageUrls[w] = imageUrlss[m];
w++;
}
}
progressBar = new SaveRemoteImage(remoteList);
domAllFilesCount.innerHTML = progressBar.TotalFilesCount();
domAlreadyDownloadFilesCount.innerHTML = progressBar.TotalFilesCount() - progressBar.CurrentFilesCount();
window.setTimeout("progressBar.NextFile()",0);
}
function _reFlush()
{
domProgressBar.style.width = "100%";
//display the 'OK' button
window.parent.SetOkButton( true ) ;
}
</script>
</head>
<body>
<form id="aspnetForm" runat="server">
<div style="width: 300px; padding-left: 10px;">
<table border="0" cellspacing="0" cellpadding="2">
<tr>
<td nowrap="nowrap" style="width: 290px;">
当前文件: <span id="domCurrentFile" style="display: inline; text-overflow: ellipsis"></span></td>
</tr>
<tr>
<td style="text-align: left; width: 290px;">
<div id="domProgressBarId">
</div>
</td>
</tr>
<tr>
<td nowrap="nowrap" style="width: 290px;">
共有: <span id="domAllFilesCount"></span> 个远程图片</td>
</tr>
<tr>
<td nowrap="nowrap" style="width: 290px;">
已下载: <span id="domAlreadyDownloadFilesCount"></span> 个。</td>
</tr>
</table>
</div>
</form>
<script type="text/javascript" language="javascript">
window.parent.SetOkButton( false ) ;
oEditor = window.parent.InnerDialogLoaded().FCK;
domProgressBar = document.getElementById("domProgressBarId");
domCurrentFile = document.getElementById("domCurrentFile");
domAllFilesCount = document.getElementById("domAllFilesCount");
domAlreadyDownloadFilesCount = document.getElementById("domAlreadyDownloadFilesCount");
window.setTimeout("_StartDownLoad()",0);
</script>
</body>
</html>