imagegallery.cs

Freetextbox是优秀的在线编辑器

namespace FreeTextBoxControls
{
    using FreeTextBoxControls.Support;
    using System;
    using System.Collections;
    using System.Collections.Specialized;
    using System.ComponentModel;
    using System.Drawing;
    using System.IO;
    using System.Web;
    using System.Web.Caching;
    using System.Web.UI;
    using System.Web.UI.HtmlControls;

    [ToolboxData("<{0}:ImageGallery runat=\"server\"></{0}:ImageGallery>")]
    public class ImageGallery : Control, IPostBackDataHandler, IPostBackEventHandler
    {
        public ImageGallery()
        {
            this.request = null;
            this.browserInfo = null;
            this.response = null;
            this.context = null;
            this.MaxThumbnailWidth = 100;
            this.MaxThumbnailHeight = 80;
            this.returnMessage = "";
            this.inputFile = null;
            this._currentDirectories = null;
            this._currentImages = null;
            this.context = HttpContext.Current;
            this.request = this.context.Request;
            this.response = this.context.Response;
            this.browserInfo = new BrowserInfo();
        }

        protected override void CreateChildControls()
        {
            this.inputFile = new HtmlInputFile();
            this.inputFile.ID = "command_UploadFile";
            base.CreateChildControls();
        }

        private string CreateResourceString(string filename, ResourceType resourceType)
        {
            switch (resourceType)
            {
                case ResourceType.JavaScript:
                    if (this.JavaScriptLocation == ResourceLocation.InternalResource)
                    {
                        return ClientScriptWrapper.GetWebResourceUrl(this, "FreeTextBoxControls.Resources.JavaScript." + filename, this.AssemblyResourceHandlerPath);
                    }
                    return base.ResolveUrl(this.SupportFolder + filename);

                case ResourceType.Utility:
                    if (this.UtilityImagesLocation == ResourceLocation.InternalResource)
                    {
                        return ClientScriptWrapper.GetWebResourceUrl(this, "FreeTextBoxControls.Resources.Images.Utility." + filename + ".gif", this.AssemblyResourceHandlerPath);
                    }
                    return base.ResolveUrl(this.SupportFolder + "Utility/" + filename + ".gif");
            }
            return string.Empty;
        }

        public virtual ArrayList GetImages()
        {
            if (this.CurrentImagesFolder == "")
            {
                return null;
            }
            string text1 = "FTB-Images-" + this.CurrentImagesFolder;
            if ((this.context.Cache[text1] == null) || (this._currentImages != null))
            {
                ArrayList list1 = new ArrayList();
                string text2 = this.request.ApplicationPath;
                if (!text2.EndsWith("/"))
                {
                    text2 = text2 + "/";
                }
                text2 = base.ResolveUrl(this.CurrentImagesFolder) + "/";
                while (text2.IndexOf("//") > -1)
                {
                    text2 = text2.Replace("//", "/");
                }
                DirectoryInfo info1 = new DirectoryInfo(this.context.Server.MapPath(this.CurrentImagesFolder));
                FileInfo[] infoArray1 = null;
                if (this._currentImages != null)
                {
                    infoArray1 = this._currentImages;
                }
                else
                {
                    try
                    {
                        infoArray1 = info1.GetFiles("*");
                    }
                    catch
                    {
                    }
                }
                if (infoArray1 != null)
                {
                    foreach (FileInfo info2 in infoArray1)
                    {
                        bool flag1 = false;
                        foreach (string text3 in this.AcceptedFileTypes)
                        {
                            if (info2.Extension.ToLower() == ("." + text3.ToLower()))
                            {
                                flag1 = true;
                                break;
                            }
                        }
                        if (flag1)
                        {
                            FreeTextBoxControls.ImageInfo info3 = new FreeTextBoxControls.ImageInfo();
                            info3.Filename = info2.Name;
                            info3.PhysicalPath = info2.FullName;
                            info3.AbsoluteWebPath = (text2 + info2.Name).Replace(@"\", "/");
                            info3.Size = info2.Length;
                            try
                            {
                                Image image1 = Image.FromFile(info3.PhysicalPath);
                                info3.Width = image1.Width;
                                info3.Height = image1.Height;
                                image1.Dispose();
                            }
                            catch (Exception)
                            {
                                goto Label_0429;
                            }
                            info3.ThumbnailAbsoluteWebPath = info3.AbsoluteWebPath;
                            if (info3.Width > info3.Height)
                            {
                                if (info3.Width > this.MaxThumbnailWidth)
                                {
                                    info3.ThumbnailWidth = this.MaxThumbnailWidth;
                                    info3.ThumbnailHeight = Convert.ToInt32((int) ((info3.Height * this.MaxThumbnailWidth) / info3.Width));
                                }
                                else
                                {
                                    info3.ThumbnailWidth = info3.Width;
                                    info3.ThumbnailHeight = info3.Height;
                                }
                            }
                            else if (info3.Height > this.MaxThumbnailHeight)
                            {
                                info3.ThumbnailHeight = this.MaxThumbnailHeight;
                                info3.ThumbnailWidth = Convert.ToInt32((int) ((info3.Width * this.MaxThumbnailHeight) / info3.Height));
                            }
                            else
                            {
                                info3.ThumbnailWidth = info3.Width;
                                info3.ThumbnailHeight = info3.Height;
                            }
                            if (info3.ThumbnailHeight < this.MaxThumbnailHeight)
                            {
                                info3.ThumbnailVSpace = Convert.ToInt32((int) ((this.MaxThumbnailHeight / 2) - (info3.ThumbnailHeight / 2)));
                            }
                            if (info3.Size > 0x100000)
                            {
                                info3.SizeString = string.Format("{0:###.##} MB", (info3.Size / ((long) 0x400)) / ((long) 0x400));
                            }
                            else if (info3.Size > 0x400)
                            {
                                info3.SizeString = string.Format("{0:###.##} KB", info3.Size / ((long) 0x400));
                            }
                            else
                            {
                                info3.SizeString = string.Format("{0} bytes", info3.Size);
                            }
                            list1.Add(info3);
                        Label_0429:;
                        }
                    }
                }
                this.context.Cache.Insert(text1, list1, new CacheDependency(this.context.Server.MapPath(this.CurrentImagesFolder)), DateTime.MaxValue, TimeSpan.Zero);
            }
            return (ArrayList) this.context.Cache[text1];
        }

        public bool LoadPostData(string postDataKey, NameValueCollection values)
        {
            return false;
        }

        protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
        }

        protected override void OnLoad(EventArgs e)
        {
            if (!this.Page.IsPostBack)
            {
                string text1 = this.request.QueryString["rif"] + "";
                if (text1 != "")
                {
                    this.RootImagesFolder = text1;
                }
                string text2 = this.request.QueryString["cif"] + "";
                if (text2 != "")
                {
                    this.CurrentImagesFolder = text2;
                }
                string text3 = this.request.QueryString["ftb"] + "";
                if (text3 != "")
                {
                    this.TargetFreeTextBox = text3;
                }
            }
            base.OnLoad(e);
        }

        protected override void OnPreRender(EventArgs e)
        {
            if (!this.Page.IsClientScriptBlockRegistered("FTB-Utility"))
            {
                this.Page.RegisterClientScriptBlock("FTB-Utility", "<script type=\"text/javascript\" src=\"" + this.CreateResourceString("FTB-Utility.js", ResourceType.JavaScript) + "\"></script>");
            }
            if (!this.Page.IsClientScriptBlockRegistered("FTB-ImageGallery"))
            {
                this.Page.RegisterClientScriptBlock("FTB-ImageGallery", "<script type=\"text/javascript\" src=\"" + this.CreateResourceString("FTB-ImageGallery.js", ResourceType.JavaScript) + "\"></script>");
            }
            this.Page.RegisterStartupScript("FTB-StartUp-Resize", "<script type=\"text/javascript\">\r\n\t\t\t\t\tFTB_AddEvents(window,new Array(\"load\",\"resize\"),FTB_ResizeGalleryArea);\r\n\t\t\t\t</script>");
            this.Page.RegisterRequiresPostBack(this);
            this.Page.GetPostBackEventReference(this);
        }

        public virtual void RaisePostBackEvent(string eventArgument)
        {
            Exception exception1;
            this.EnsureChildControls();
            DirectoryInfo info1 = new DirectoryInfo(this.context.Server.MapPath(this.CurrentImagesFolder));
            string[] textArray1 = eventArgument.Split(new char[] { ':' });
            switch (textArray1[0])