//
// Copyright © 2006-2010, Intel Corporation. All rights reserved.
//
// File:        ProgressWindow.cs
//
// Contents:    Defintion of logic of the form used for progress window used by various parts of the code
//
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;


namespace AMT_SW_GUI
{
    public partial class ProgressWindow : Form
    {
        #region PRIVATE

        private string m_uiObjectName = "ProgressWindow";

        private string m_helppath;
        private Exception _exceptionCaught = null;
        Delegate exeFunc;

        private System.ComponentModel.BackgroundWorker backgroundWorker1 = new BackgroundWorker();
        BackgroundWorker m_Worker;
        public Object[] m_return_obj;
        private object[] passToFunc;

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.CancelAsync();
            this.Close();
        }

        #endregion PRIVATE

        //If an exception occured exposing exception to the user
        public Exception ExceptionCaught { 
            get
            {
                return _exceptionCaught;
            }
        }
        
        private void InitializeBackgoundWorker()
        {

            backgroundWorker1.DoWork +=
                new DoWorkEventHandler(backgroundWorker1_DoWork);
            backgroundWorker1.RunWorkerCompleted +=
                new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
            backgroundWorker1.ProgressChanged +=
                new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
            backgroundWorker1.RunWorkerAsync();
        }


        private void backgroundWorker1_DoWork(object sender,
           DoWorkEventArgs e)
        {
            // Get the BackgroundWorker that raised this event.
            m_Worker = sender as BackgroundWorker;
            m_Worker.WorkerReportsProgress = true;
            m_Worker.WorkerSupportsCancellation = true;
            m_return_obj = (object[])exeFunc.DynamicInvoke(m_Worker, e, passToFunc);
            e.Result = 1;
        }

        // This event handler deals with the results of the
        // background operation.
        private void backgroundWorker1_RunWorkerCompleted(
            object sender, RunWorkerCompletedEventArgs e)
        {
            // First, handle the case where an exception was thrown.
            if (e.Error != null)
            {
                if (e.Error.InnerException != null)
                {
                    _exceptionCaught = e.Error.InnerException; 
                }
                else
                {
                    _exceptionCaught =  e.Error;
                }
            }
            this.btnCancel.Enabled = false;
            this.Close();
        }

        // This event handler updates the progress bar.
        private void backgroundWorker1_ProgressChanged(object sender,
            ProgressChangedEventArgs e)
        {
            if (e.UserState is BackgroundInvocation)
            {
                BackgroundInvocation invocationState = (BackgroundInvocation)e.UserState;
                if (invocationState.UserState.ToString().CompareTo("") != 0)
                    this.lblOptional.Text = (string)invocationState.UserState;
                if (null != invocationState.FuncToRun)
                {
                    if (null == m_Worker)
                        m_Worker = sender as BackgroundWorker;
                    invocationState.FuncToRun.DynamicInvoke(invocationState.Params);
                }
            }

            this.prCompleted.Value = Math.Min(e.ProgressPercentage, 100);
            this.Update();

        }

        #region PUBLIC


        public ProgressWindow(Delegate funcToRun, object[] inpParams, string formTitle, string text, bool hasCancel, bool to100)
        {
            InitializeComponent();
            InitUI();
            this.Text = formTitle;

            if (!hasCancel)
            {
                btnCancel.Visible = false;
                Size tempSize = this.Size;
                tempSize.Height = tempSize.Height - btnCancel.Size.Height;
                this.Size = tempSize;

            }
            if (!to100)
            {
                this.prCompleted.Style = ProgressBarStyle.Marquee;
                this.prCompleted.MarqueeAnimationSpeed = 100;

            }
            if (text != "")
                lblHeaderDesc.Text = text;

            int diff = Math.Max(0, lblHeaderDesc.Size.Height - 15);
            innerPane1.Size = new Size(innerPane1.Size.Width, innerPane1.Size.Height + diff);
            prCompleted.Location = new Point(prCompleted.Location.X, prCompleted.Location.Y + diff);
            btnCancel.Location = new Point(btnCancel.Location.X, btnCancel.Location.Y + diff);
            this.Size = new Size(this.Size.Width, this.Size.Height + diff);

            exeFunc = funcToRun;
            passToFunc = inpParams;
            InitializeBackgoundWorker();
        }


        

        public void InitUI()
        {

        }
        public void LoadResources()
        {
        }

        public void SetPrevileges()
        {
        }

        public void FetchData()
        {
        }

        public void Help()
        {
        }

        #endregion PUBLIC

        #region PROPERTIES

        
        public string HelpPath
        {
            get
            {
                return m_helppath;
            }
            set
            {
                m_helppath = value;
            }
       }
        public string UIObjectName
        {
            get
            {
                return m_uiObjectName;
            }
            set
            {
                m_uiObjectName = value;
            }
        }
        #endregion PROPERTIES

    }
    class BackgroundInvocation
    {
        private string m_UserState = string.Empty;
        private Delegate m_FuncToRun;
        private object[] m_Params;

        public BackgroundInvocation(string state, Delegate funcToRun, object[] inParams)
        {
            m_UserState = state;
            m_FuncToRun = funcToRun;
            m_Params = inParams;
        }

        public string UserState
        {
            get { return m_UserState; }
            set { m_UserState = value; }
        }

        public Delegate FuncToRun
        {
            get { return m_FuncToRun; }
            set { m_FuncToRun = value; }
        }

        public object[] Params
        {
            get { return m_Params; }
            set { m_Params = value; }
        }
    }

}