//----------------------------------------------------------------------------
//
// Copyright © 2009-2014, Intel Corporation. All rights reserved.
//
// File:        ProgressWindow.cs
//
// Contents:    Definition of logic of the form used for progress window used by various parts of the code
//
//----------------------------------------------------------------------------

using System;
using UCT.Forms;
using AMT_SW_GUI;
using System.Drawing;
using System.Windows.Forms;
using System.ComponentModel;

namespace UCT.Forms
{
    /// <summary>
    /// Progress bar window
    /// </summary>
    public partial class ProgressBarWindow : 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;

        #endregion 

        //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;
            if (m_Worker != null)
            {
                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();
       
        }

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

        private void btnSkip_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Abort;
            this.backgroundWorker1.CancelAsync();
            this.Close();
        }

        #region - Public -

        public ProgressBarWindow()
        {
            InitializeComponent();

            InitializeBackgoundWorker();
        }

        public ProgressBarWindow(Delegate funcToRun, string formTitle, object[] inpParams, string text, bool hasCancel, bool hasSkip, bool to100)
        {
            InitializeComponent();
            backgroundWorker1.WorkerSupportsCancellation = true;
            InitUI();
            this.Text = formTitle;
            if (!hasCancel && !hasSkip)
            {
                btnCancel.Visible = false;
                Size tempSize = this.Size;
                tempSize.Height = tempSize.Height - btnCancel.Size.Height;
                this.Size = tempSize;

            }
            else if (hasSkip == !hasCancel)
            {
                if (hasSkip)
                {
                    btnCancel.Visible = false;
                }
                else
                {
                    btnCancel.Location = new Point((this.Width - btnCancel.Width) / 2, btnCancel.Location.Y);
                }
            }
            else
            {
                btnCancel.Visible = true;
            }
            if (!to100)
            {
                this.prCompleted.Style = ProgressBarStyle.Marquee;
                this.prCompleted.MarqueeAnimationSpeed = 100;

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