using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using Excel = Microsoft.Office.Interop.Excel; 


namespace MemoryViewer
{
    public partial class AllocationViewer : Form
    {
        public AllocationViewer()
        {
            InitializeComponent();
        }

        private void releaseObject(object obj)
        {
            try
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                obj = null;
            }
            catch (Exception ex)
            {
                obj = null;
                MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
            }
            finally
            {
                GC.Collect();
            }
        }


        private void btnDumpToFile_Click(object sender, EventArgs e)
        {
            SaveFileDialog savefileDialog = new SaveFileDialog();
            savefileDialog.Filter = "Excel files|*.xls";
            savefileDialog.Title = "Choose filename for XLS memory dump";
            
            if (savefileDialog.ShowDialog() == DialogResult.OK)
            {
                Excel.Application xlApp;
                Excel.Workbook xlWorkBook;
                Excel.Worksheet xlWorkSheet;
                object misValue = System.Reflection.Missing.Value;

                xlApp = new Excel.ApplicationClass();
                xlWorkBook = xlApp.Workbooks.Add(misValue);
                xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
                int i = 0;
                int j = 0;

                //add the row information
                int columnCounter = 1;
                foreach (DataGridViewColumn column in dataGridViewAllocation.Columns)
                {
                    xlWorkSheet.Cells[1, columnCounter] = column.HeaderText;
                    columnCounter++;
                }
                
                //parse the data
                for (i = 0; i <= dataGridViewAllocation.RowCount - 1; i++)
                {
                    for (j = 0; j <= dataGridViewAllocation.ColumnCount - 1; j++)
                    {
                        DataGridViewCell cell = dataGridViewAllocation[j, i];
                        xlWorkSheet.Cells[i + 2, j + 1] = cell.Value;
                    }
                }


                xlWorkBook.SaveAs(savefileDialog.FileName, Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
                xlWorkBook.Close(true, misValue, misValue);
                xlApp.Quit();

                releaseObject(xlWorkSheet);
                releaseObject(xlWorkBook);
                releaseObject(xlApp);
            }
        }

        private void btnAnalyze_Click(object sender, EventArgs e)
        {
            //get the allocation id you want to analyze
            //send to the engine and wait the result
            //result is full callstack of the different allocation 
            //grouped by size / count -- callstack
            
            DataGridViewSelectedRowCollection rowCollection = dataGridViewAllocation.SelectedRows;
            if (rowCollection != null && rowCollection.Count > 0)
            {
                DataGridViewRow cell = rowCollection[0];

                DataGridViewTextBoxCell element = (DataGridViewTextBoxCell)dataGridViewAllocation.Rows[cell.Index].Cells[0];


                Int32 filter = MemoryUtils.findAllocatorId(element.Value.ToString());

                if (filter != -1)
                {
                    ((FormMemoryViewer) Parent).Plugin.SendIdCommand(filter);
                }
            }
        }

        private void dataGridViewAllocation_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            int rowIndex = e.RowIndex;

            if (e.ColumnIndex == 6) //button
            {
                DataGridViewTextBoxCell element = (DataGridViewTextBoxCell)dataGridViewAllocation.Rows[rowIndex].Cells[0];
               
                Int32 filter = MemoryUtils.findAllocatorId(element.Value.ToString());

                if (filter != -1)
                {
                    ((FormMemoryViewer) Parent).Plugin.SendIdCommand(filter);
                }

            }
        }
    }
}