// Copyright 2010 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.TrackingAnalyst;

namespace TAPurgeRuleCommand
{
  public partial class PurgeRuleForm : Form
  {
    private IEnumLayer m_eTrackingLayers = null;

    public PurgeRuleForm()
    {
      InitializeComponent();
    }

    //The collection of temporal layers in the map/globe
    public IEnumLayer TrackingLayers
    {
      set
      {
        m_eTrackingLayers = value;
      }
    }

    //Initialize all the dialog controls
    public void PopulateDialog()
    {
      cbTrackingLayers.SelectedIndex = -1;
      PopulateTrackingLayerComboBox();
      LoadDialogFromFeatureClassSettings(null);
    }

    //Populate the tracking layer combo box with the names 
    //of all the temporal layers in the map
    private void PopulateTrackingLayerComboBox()
    {
      ILayer lyr = null;
      m_eTrackingLayers.Reset();

      cbTrackingLayers.Items.Clear();
      while ((lyr = m_eTrackingLayers.Next()) != null)
      {
        cbTrackingLayers.Items.Add(lyr.Name);
      }
    }

    //Get the ILayer using the name selected in the tracking layer combo box
    private ILayer GetSelectedLayer()
    {
      string sLayerName = Convert.ToString(cbTrackingLayers.SelectedItem);

      ILayer lyr = null;
      m_eTrackingLayers.Reset();

      while ((lyr = m_eTrackingLayers.Next()) != null)
      {
        if (lyr.Name == sLayerName)
        {
          return lyr;
        }
      }

      return null;
    }

    //Repopulate the dialog controls when a different layer is selected
    private void cbTrackingLayers_SelectionChangeCommitted(object sender, EventArgs e)
    {
      ILayer lyr = GetSelectedLayer();

      if (lyr != null)
      {
        ITemporalFeatureClass temporalFC = ((IFeatureLayer)lyr).FeatureClass as ITemporalFeatureClass;
        LoadDialogFromFeatureClassSettings(temporalFC);
      }

    }

    //Set the dialog controls according the to settings of the specified temporal feature class
    private void LoadDialogFromFeatureClassSettings(ITemporalFeatureClass temporalFC)
    {
      //If no feature class is specified clear all the controls
      if (temporalFC == null)
      {
        checkAutoPurge.Checked = false;
        cbPurgeRule.SelectedIndex = 0;
        txtThreshold.Text = "";
        txtPurgePercent.Text = "";
        return;
      }

      checkAutoPurge.Checked = temporalFC.AutoPurge;
      cbPurgeRule.SelectedIndex = (int)temporalFC.PurgeRule;
      txtThreshold.Text = Convert.ToString(temporalFC.Threshold);
      txtPurgePercent.Text = Convert.ToString(temporalFC.PurgePercentage);
    }

    //Apply the new settings to the temporal feature class
    private void btnApply_Click(object sender, EventArgs e)
    {
      try
      {
        ILayer lyr = GetSelectedLayer();

        if (lyr != null)
        {
          ITemporalFeatureClass temporalFC = (ITemporalFeatureClass)((IFeatureLayer)lyr).FeatureClass;

          temporalFC.AutoPurge = checkAutoPurge.Checked;

          //only set the other properties if Auto Purge is true
          if (checkAutoPurge.Checked)
          {
            temporalFC.PurgeRule = (enumPurgeRule)cbPurgeRule.SelectedIndex;
            temporalFC.Threshold = Convert.ToInt32(txtThreshold.Text);
            temporalFC.PurgePercentage = Convert.ToDouble(txtPurgePercent.Text);
          }
        }

      }
      catch (Exception ex)
      {
        MessageBox.Show(ex.Message, "Error");
      }
    }

    //Set the appropriate text boxes enabled depending on the purge rule selected
    private void cbPurgeRule_SelectedIndexChanged(object sender, EventArgs e)
    {
      switch (cbPurgeRule.SelectedIndex)
      {
        case 0:
        default:
          txtThreshold.Enabled = true;
          txtPurgePercent.Enabled = true;
          break;
        case 1:
          txtThreshold.Enabled = true;
          txtPurgePercent.Enabled = false;
          break;
      }
    }

    private void btnCancel_Click(object sender, EventArgs e)
    {
      this.Hide();
    }

    //Don't dispose the dialog when it's closed.  Just hide it so that it can be reopened.
    private void PurgeRuleForm_FormClosing(object sender, FormClosingEventArgs e)
    {
      this.Hide();
      e.Cancel = true;
    }
  }
}