/*_________________________________________________________________________________

                       U S I N G   A   L I S T   &   L I S T V I E W   C O N T R O L

                                                      Ron Kessler
                                               Created 10/18/2014
									            VS 2012 C++/CLI

_________________________________________________________________________________

Updated 10/22/2014

Features:
   1.  How to use the List to hold a collection of items
   2.  How to use a ListView Control to display items that are in memory without using a listbox control.
   3.  How to access members of another class from the main form.
*/

#pragma once

#include "Employee.h";
#include "General.h";

public ref class Form1 : public System::Windows::Forms::Form
	{

	//---create new instance of employee class
	static Employee^ myEmployee= gcnew Employee; 
	

	public:
		Form1(void)
		{
			InitializeComponent();
			this->CenterToScreen();

private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) 
				 {
				      bool loadedNames = false;
					  loadedNames = myEmployee->LoadNames();
					  if(loadedNames = false)
						  {
							   General::ShowMSG(  "I could not load the list of employees.", General::generalMsgTitle);
							  this->Close();
						  }
					  else
						  DisplayAll();
				 }


#pragma region Add & Delete Buttons

private: System::Void btnAdd_Click(System::Object^  sender, System::EventArgs^  e) 
			 {
			      if(txtNew->Text->Trim() =="")
					  {
					          General::ShowMSG("Please enter a name.", General::addMsgTitle);
							  txtNew->Clear();
							  txtNew->Focus();
					  }
				  else
					  {
                              myEmployee->NewName = txtNew->Text->Trim();
							  if(myEmployee->AddNewPerson() ==true)
								  {
								      DisplayAll();
								      txtNew->Clear();
									  txtNew->Focus();
								  }
					  }
			 }

private: System::Void btnDelete_Click(System::Object^  sender, System::EventArgs^  e) 
			 {
			      if(txtDelete->Text->Trim() =="")
					  {
					           General::ShowMSG("Please enter a name.", General::deleteMsgTitle);
							  txtNew->Clear();
							  txtNew->Focus();
					  }
				  else
					  {
                              myEmployee->DeleteName = txtDelete->Text->Trim();
							  if(myEmployee->DeletePerson()==true)
								  {
								      DisplayAll();
								      txtDelete->Clear();
									  txtDelete->Focus();
								  }
					  }
			 
			 }

#pragma endregion

#pragma region  Display all Employees

		public: void DisplayAll()
			{
       
                  
				  //now use that variable to access the controls on form1
				  ListView1->Clear();  
				  myEmployee->employeeNames->Sort();

				  //---here I create a variable called listItem as string within the loop itself!
				  for each(String^ listItem in myEmployee->employeeNames)
					  {
					     ListView1->Items->Add(listItem);
                         ListView1->Sort();
					  } 
						 
			}

#pragma endregion