Market Watch Panel

ÿþ//+------------------------------------------------------------------+

//|                                          Market Watch Panel.mq5  |

//|                                  Copyright © 2024, Long Tien Tu. |

//|                                                                  |

//+------------------------------------------------------------------+

#property copyright "Copyright © 2024, Long Tien Tu."

#property description "Market Watch Panel: A custom panel for real-time monitoring of symbol current prices with easy symbol stacking and filtering for a streamlined trading experience."

#property strict

#property version   "1.00"

#include <Controls\Defines.mqh>

#include <Controls\Label.mqh>

#include <Controls\Edit.mqh>

#undef CONTROLS_DIALOG_COLOR_BG

#undef CONTROLS_DIALOG_COLOR_CAPTION_TEXT

#undef CONTROLS_DIALOG_COLOR_CLIENT_BG



input color    dialog_color_bg            = clrWhite;             // Panel background color

input color    dialog_color_caption_text  = clrDarkBlue;          // Panel text color

input color    dialog_color_client_bg     = clrLightGray;         // Panel client background

input color    dialog_main_text_color     = clrPurple;         // Panel main text color



#define CONTROLS_DIALOG_COLOR_BG          dialog_color_bg            // Panel background color

#define CONTROLS_DIALOG_COLOR_CAPTION_TEXT dialog_color_caption_text // Panel text color

#define CONTROLS_DIALOG_COLOR_CLIENT_BG   dialog_color_client_bg     // Panel client background

#include <Controls\Dialog.mqh>

#include <Controls\BmpButton.mqh>

int base_x1 = 5, base_y1 = 10;  // Base coordinates for MyLabel3

// Declare a dynamic array of label pointers

CLabel *LabelArray[];

//

string SymbolArray[];  // Array to store symbols for each label

//+------------------------------------------------------------------+

//| defines                                                          |

//+------------------------------------------------------------------+

//--- for buttons

#define BUTTON_WIDTH                        (50)     // size by X coordinate

#define BUTTON_HEIGHT                       (20)      // size by Y coordinate

//+------------------------------------------------------------------+

//| Class CControlsDialog                                            |

//| Usage: main dialog of the Controls application                   |

//+------------------------------------------------------------------+

class CControlsDialog : public CAppDialog

  {

private:

   CBmpButton        m_bmpbutton1;                    // CBmpButton object

   CBmpButton        m_bmpbutton2;                    // CBmpButton object

   CEdit             m_editInput;                     // CEdit object for text input



public:

                     CControlsDialog(void);

                    ~CControlsDialog(void);

   //--- create

   virtual bool      Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2);

   //--- chart event handler

   virtual bool      OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam);



protected:

   //--- create dependent controls

   bool              CreateBmpButton1(void);

   bool              CreateBmpButton2(void);

   bool              CreateTextInput(void);           // Create Text Input Field

   //--- handlers of the dependent controls events

   void              OnClickBmpButton1(void);

   void              OnClickBmpButton2(void);

  };

//+------------------------------------------------------------------+

//| Event Handling                                                   |

//+------------------------------------------------------------------+

EVENT_MAP_BEGIN(CControlsDialog)

ON_EVENT(ON_CLICK,m_bmpbutton1,OnClickBmpButton1)

ON_EVENT(ON_CLICK,m_bmpbutton2,OnClickBmpButton2)

EVENT_MAP_END(CAppDialog)

//+------------------------------------------------------------------+

//| Constructor                                                      |

//+------------------------------------------------------------------+

CControlsDialog::CControlsDialog(void)

  {

  }

//+------------------------------------------------------------------+

//| Destructor                                                       |

//+------------------------------------------------------------------+

CControlsDialog::~CControlsDialog(void)

  {

  }

//+------------------------------------------------------------------+

//| Create                                                           |

//+------------------------------------------------------------------+

bool CControlsDialog::Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2)

  {

   if(!CAppDialog::Create(chart,name,subwin,x1,y1,x2,y2))

      return(false);

//--- create dependent controls

   if(!CreateBmpButton1())

      return(false);

   if(!CreateBmpButton2())

      return(false);

   if(!CreateTextInput())

      return(false);

//--- succeed

   return(true);

  }

//+------------------------------------------------------------------+

//| Create the "TextInput" field                                     |

//+------------------------------------------------------------------+

bool CControlsDialog::CreateTextInput(void)

  {

//--- coordinates

   int x1 = 200;

   int y1 = 5;

   int x2 = 325;

   int y2 = 10 + BUTTON_HEIGHT;



//--- create

   if(!m_editInput.Create(m_chart_id, m_name + "EditInput", m_subwin, x1, y1, x2, y2))

      return false;



//--- set initial text

   m_editInput.Text();



//--- add the input field to the dialog

   if(!Add(m_editInput))

      return false;



//--- succeed

   return true;

  }

//+------------------------------------------------------------------+

//| Create the "BmpButton1" button                                   |

//+------------------------------------------------------------------+

bool CControlsDialog::CreateBmpButton1(void)

  {

//--- coordinates

   int x1=5;

   int y1=250;

   int x2=x1+BUTTON_WIDTH;

   int y2=y1+BUTTON_HEIGHT;

//--- create

   if(!m_bmpbutton1.Create(m_chart_id,m_name+"BmpButton1",m_subwin,x1,y1,x2,y2))

      return(false);

//--- sets the name of bmp files of the control CBmpButton

   m_bmpbutton1.BmpNames("::Images\\rsz_1a.bmp", "::Images\\rsz_1a.bmp");

   if(!Add(m_bmpbutton1))

      return(false);

//--- succeed

   return(true);

  }

//+------------------------------------------------------------------+

//| Create the "BmpButton2" button                                   |

//+------------------------------------------------------------------+

bool CControlsDialog::CreateBmpButton2(void)

  {

//--- coordinates

   int x1=282;

   int y1=250;

   int x2=x1+BUTTON_WIDTH;

   int y2=y1+BUTTON_HEIGHT;

//--- create

   if(!m_bmpbutton2.Create(m_chart_id,m_name+"BmpButton2",m_subwin,x1,y1,x2,y2))

      return(false);

//--- sets the name of bmp files of the control CBmpButton

   m_bmpbutton2.BmpNames("::Images\\images.bmp", "::Images\\images.bmp");

   if(!Add(m_bmpbutton2))

      return(false);

//--- succeed

   return(true);

  }

//+------------------------------------------------------------------+

//| Event handler for the button click                               |

//+------------------------------------------------------------------+

void CControlsDialog::OnClickBmpButton2(void)

  {

   Print(__FUNCTION__, " - Clearing arrays, labels, and symbols.txt");



//--- 

   ArrayResize(SymbolArray, 0);

   Print("SymbolArray has been cleared.");



//--- 

   for(int i = 0; i < ArraySize(LabelArray); i++)

     {

      // Check if the label is valid

      if(LabelArray[i] != NULL)

        {

         // Destroy the label (remove it from the chart and free memory)

         LabelArray[i].Destroy();



         // Delete the label object to free memory

         delete LabelArray[i];

         LabelArray[i] = NULL;  // Set pointer to NULL to avoid dangling references

        }

     }



//--- 

   ArrayResize(LabelArray, 0);

   Print("LabelArray has been cleared.");



//--- 

   string file_name = "symbols.txt";

   int file_handle = FileOpen(file_name, FILE_WRITE | FILE_TXT);  // Open in write mode to truncate the file

   if(file_handle != INVALID_HANDLE)

     {

      FileClose(file_handle);  // Close the file immediately to clear it

      Print("symbols.txt file has been cleared.");

     }

   else

     {

      Print("Failed to open symbols.txt for clearing. Error code: ", GetLastError());

     }



//--- (Optional) Clear any other data if necessary

  }



//+------------------------------------------------------------------+

//| Event handler for the button click                               |

//+------------------------------------------------------------------+

void CControlsDialog::OnClickBmpButton1(void)

  {

// Retrieve the text from the input field

   string symbol_to_change = m_editInput.Text();



// Print the text for debugging

   Print("Symbol entered: ", symbol_to_change);



// Check if the symbol is valid or non-empty

   if(StringLen(symbol_to_change) > 0)

     {

      // **Trigger Save after a new symbol is added**

      SaveSymbolsToFile();  // Save the updated symbol array to a file

      // Dynamically calculate the position for the new label

      int label_count = ArraySize(LabelArray);  // Number of existing labels



      // Base coordinates (from MyLabel3)

      int label_x1 = base_x1;

      int label_y1 = base_y1 + (label_count + 1) * 30;  // Y position relative to MyLabel3



      // Ensure that the new label fits within the window

      int window_height = 344;  // Example window height, adjust as needed

      if(label_y1 + 20 > 250)

        {

         Print("No more space for new labels.");

         return;

        }



      // Get the correct number of digits for the symbol

      int symbol_digits = (int)SymbolInfoInteger(symbol_to_change, SYMBOL_DIGITS);



      // Create the new label and add it to the array

      CLabel *new_label = new CLabel;

      if(new_label.Create(m_chart_id, "Label" + IntegerToString(label_count), m_subwin, label_x1, label_y1, label_x1 + 200, label_y1 + 20))

        {

         // Add the label to the array

         ArrayResize(LabelArray, label_count + 1);

         LabelArray[label_count] = new_label;



         // Store the associated symbol

         ArrayResize(SymbolArray, label_count + 1);

         SymbolArray[label_count] = symbol_to_change;



         // Set initial text with price

         double close_price = iClose(symbol_to_change, PERIOD_CURRENT, 0);

         new_label.Text(symbol_to_change + " Price: " + DoubleToString(close_price, symbol_digits));

         new_label.Color(dialog_main_text_color);



         // Add the label to the dialog

         ExtDialog.Add(*new_label);

        }

      else

        {

         Print("Failed to create new label.");

         delete new_label;

        }

     }

   else

     {

      Print("No symbol entered. Please type a symbol in the text input field.");

     }

  }

//---

void SaveSymbolsToFile()

  {

   Print("SaveSymbolsToFile() function called.");



   int file_handle;

   string file_name = "symbols.txt";



// Open the file for writing (FILE_WRITE ensures it will be created if it doesn't exist)

   file_handle = FileOpen(file_name, FILE_WRITE | FILE_TXT);



   if(file_handle != INVALID_HANDLE)

     {

      // Write each symbol to the file, no symbol count

      for(int i = 0; i < ArraySize(SymbolArray); i++)

        {

         FileWrite(file_handle, SymbolArray[i]);  // Write the symbol name

        }



      FileClose(file_handle); // Close the file

      Print("Symbol names saved to file: ", file_name);

     }

   else

     {

      int error_code = GetLastError();

      Print("Failed to open the file for writing. Error code: ", error_code);

     }

  }

//+------------------------------------------------------------------+

//|                                                                  |

//+------------------------------------------------------------------+

void LoadSymbolsFromFile()

  {

   string file_name = "symbols.txt";



// Open the file for reading

   int file_handle = FileOpen(file_name, FILE_READ | FILE_TXT);



   if(file_handle != INVALID_HANDLE)

     {

      // Clear the existing SymbolArray

      ArrayResize(SymbolArray, 0);



      // Read each symbol from the file and add it to SymbolArray

      while(!FileIsEnding(file_handle))

        {

         string symbol = FileReadString(file_handle);



         // Check if the symbol is valid (not an empty line or invalid symbol)

         if(StringLen(symbol) > 0)

           {

            int array_size = ArraySize(SymbolArray);

            ArrayResize(SymbolArray, array_size + 1);

            SymbolArray[array_size] = symbol;



            Print("Loaded symbol: ", symbol);

           }

        }



      FileClose(file_handle);  // Close the file after reading

      Print("Symbol array loaded from file: ", file_name);

     }

   else

     {

      int error_code = GetLastError();

      Print("Failed to open the file for reading. Error code: ", error_code);

     }

  }





//+------------------------------------------------------------------+

//| Global Variables                                                 |

//+------------------------------------------------------------------+

CControlsDialog *ExtDialog;

CLabel MyLabel3;

//+------------------------------------------------------------------+

//| Expert initialization function                                   |

//+------------------------------------------------------------------+

int OnInit()

  {

//--- 

   if(CheckPointer(ExtDialog) == POINTER_INVALID)

     {

      ExtDialog = new CControlsDialog;

      if(CheckPointer(ExtDialog) == POINTER_INVALID)

         return (INIT_FAILED);

     }

   else

     {

      delete ExtDialog;

      ExtDialog = new CControlsDialog;

      if(CheckPointer(ExtDialog) == POINTER_INVALID)

         return (INIT_FAILED);

     }



//--- 

   if(!ExtDialog.Create(0, "Market Watch Panel", 0, 40, 40, 380, 344))

      return (INIT_FAILED);



//--- 

   LoadSymbolsFromFile();  // Load symbols from the file on initialization



//--- 

   for(int i = 0; i < ArraySize(SymbolArray); i++)

     {

      string symbol = SymbolArray[i];



      // Dynamically calculate the position for the new label

      int label_count = i;  // Number of existing labels (since it's at startup, it equals the index)

      int label_x1 = base_x1;

      int label_y1 = base_y1 + (label_count + 1) * 30;  // Y position relative to base_y1



      // Ensure that the new label fits within the window

      int window_height = 344;  // Example window height, adjust as needed

      if(label_y1 + 20 > window_height)

        {

         Print("No more space for new labels.");

         continue;  // Skip creating the label if it doesn't fit

        }



      // Get the correct number of digits for the symbol

      int symbol_digits = (int)SymbolInfoInteger(symbol, SYMBOL_DIGITS);



      // Create the new label

      CLabel *new_label = new CLabel;

      if(new_label.Create(0, "Label" + IntegerToString(label_count), 0, label_x1, label_y1, label_x1 + 200, label_y1 + 20))

        {

         // Set initial text with price

         double close_price = iClose(symbol, PERIOD_CURRENT, 0);

         new_label.Text(symbol + " Price: " + DoubleToString(close_price, symbol_digits));

         new_label.Color(dialog_main_text_color);



         // Add the label to the dialog and LabelArray

         ArrayResize(LabelArray, label_count + 1);

         LabelArray[label_count] = new_label;

         ExtDialog.Add(*new_label);



         Print("Label created for symbol: ", symbol);

        }

      else

        {

         Print("Failed to create new label for symbol: ", symbol);

         delete new_label;

        }

     }



//--- 

   MyLabel3.Create(0, "Text 3", 0, base_x1, base_y1, 200, 20);   // Adjust the dimensions as needed

   MyLabel3.Text(_Symbol + " Price: " + DoubleToString(iClose(_Symbol, PERIOD_CURRENT, 0), Digits()));

   MyLabel3.Color(dialog_main_text_color);  // Set color, if available

   ExtDialog.Add(MyLabel3);  // Add MyLabel3 to the dialog



//--- 

   EventSetTimer(1);



//--- 

   ExtDialog.Run();



   return (INIT_SUCCEEDED);

  }



//+------------------------------------------------------------------+

//| Timer function                                                   |

//+------------------------------------------------------------------+

void OnTimer()

  {

// Trigger a calculation to update the display

   ChartRedraw(0);

  }

//+------------------------------------------------------------------+

//| Expert deinitialization function                                 |

//+------------------------------------------------------------------+

void OnDeinit(const int reason)

  {

   Comment("");

   ExtDialog.Destroy(reason);

   if(CheckPointer(ExtDialog) != POINTER_INVALID)

      delete ExtDialog;

   EventKillTimer();

  }



//+------------------------------------------------------------------+

//| Expert chart event function                                      |

//+------------------------------------------------------------------+

void OnChartEvent(const int id, const long &lparam, const double &dparam, const string &sparam)

  {

   ExtDialog.ChartEvent(id, lparam, dparam, sparam);

  }



//+------------------------------------------------------------------+

//| Expert tick function                                             |

//+------------------------------------------------------------------+

void OnTick()

  {

// Loop through each label and update the price

   int label_count = ArraySize(LabelArray);

   for(int i = 0; i < label_count; i++)

     {

      // Get the symbol for this label

      string symbol = SymbolArray[i];



      // Get the correct number of digits for the symbol

      int symbol_digits = (int)SymbolInfoInteger(symbol, SYMBOL_DIGITS);



      // Get the latest close price for the symbol

      double close_price = iClose(symbol, PERIOD_CURRENT, 0);



      // Update the label text with the current price

      LabelArray[i].Text(symbol + " Price: " + DoubleToString(close_price, symbol_digits));

     }

// Optionally update the labels dynamically on every tick

   MyLabel3.Text(_Symbol + " Price: " +DoubleToString(iClose(_Symbol, PERIOD_CURRENT, 0), Digits()));

  }

//+------------------------------------------------------------------+