Using Silverlight in Enterprise: RAD of User Friendly Database Access

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 *  FulcrumWeb RAD Framework - Fulcrum of your business             *
 *  Copyright (c) 2002-2009 FulcrumWeb, ALL RIGHTS RESERVED         *
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 *  THE SOURCE CODE CONTAINED WITHIN THIS FILE AND ALL RELATED      *
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using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;

namespace Framework.Silverlight.Client 
{
  /// <summary>
  /// Dialog that shows when application performs files uploading.
  /// </summary>
  public class CxUploadDialog : CxDialog
  {
    private readonly CxUploadPanel m_UploadPanel = new CxUploadPanel();
    private long m_FileLenght;
    string strFileLenght = "";
    public event EventHandler CancelUpload;
    //----------------------------------------------------------------------------
    /// <summary>
    /// Default .ctor
    /// </summary>
    public CxUploadDialog()
    {
      Buttons = NxDialogButtons.Custom;
      HoldSizePercent = 40;
      IsFixedSize = true;
      Width = 500;
      m_UploadPanel.SetValue(Grid.RowProperty, 1);
      LayoutRoot.Children.Add(m_UploadPanel);
    }

    //----------------------------------------------------------------------------
    /// <summary>
    /// Creates custom buttons set.
    /// Dialog calls to this method if DefaultButton property set as 'Custom'.
    /// </summary>
    /// <returns>Created list of dialog buttons.</returns>
    protected override List<Button> CreateCustomButtons()
    {
      List<Button> btns = base.CreateCustomButtons();

      CxDialogButton btnCancel = new CxDialogButton();
      btnCancel.DialogResult = NxDialogResult.Cancel;
      btnCancel.Content = "Cancel";
      btns.Add(btnCancel);
      btnCancel.Click += btnCancel_Click;
      return btns;
    }

    //----------------------------------------------------------------------------
    /// <summary>
    /// Handles Click event.
    /// </summary>
    void btnCancel_Click(object sender, RoutedEventArgs e)
    {
      if(CancelUpload != null)
      {
        CancelUpload(this, EventArgs.Empty);
      }
    }

    //----------------------------------------------------------------------------
    /// <summary>
    /// Sets progress bar position.
    /// </summary>
    /// <param name="fileLength">Length of whole file.</param>
    /// <param name="bytesUploaded">Already uploaded bytes count.</param>
    /// <param name="percentUploaded">Already uploaded bytes in percents.</param>
    /// <param name="speed"></param>
    public void SetProgress(long fileLength, long bytesUploaded, double percentUploaded, float speed)
    { 
      m_UploadPanel.PersentValue = percentUploaded;
      m_UploadPanel.PersentText = string.Concat(percentUploaded, "%");
      if (m_FileLenght != fileLength)
      {
        m_FileLenght = fileLength;
        strFileLenght = GetFileSizeAsString(fileLength);
      }
      m_UploadPanel.UploadedBytesText = string.Format(
        "Uploaded: {0} from {1}", GetFileSizeAsString(bytesUploaded), strFileLenght);
      m_UploadPanel.UpoadSpeedText = string.Concat("Upload speed kb/s: ", speed);
    }

    //----------------------------------------------------------------------------
    /// <summary>
    /// Converts and returns given file size in suitable for users string format.
    /// </summary>
    /// <param name="size">File size to convert.</param>
    /// <returns>Converted file size.</returns>
    public static string GetFileSizeAsString(long size)
    {
      double s = size;
      string[] format = new [] { "{0} bytes", "{0} KB", "{0} MB", "{0} GB", "{0} TB", "{0} PB", "{0} EB", "{0} ZB", "{0} YB" };
      int i = 0;
      while (i < format.Length - 1 && s >= 1024)
      {
        s = (100 * s / 1024) / 100.0;
        i++;
      }
      return string.Format(format[i], s.ToString("###,###,##0.##"));
    }
  }
}