//+------------------------------------------------------------------+
//|                                                     TabField.mqh |
//|                                  Copyright 2022, MetaQuotes Ltd. |
//|                             https://mql5.com/en/users/artmedia70 |
//+------------------------------------------------------------------+
#property copyright "Copyright 2022, MetaQuotes Ltd."
#property link      "https://mql5.com/en/users/artmedia70"
#property version   "1.00"
#property strict    // Necessary for mql4
//+------------------------------------------------------------------+
//| Include files                                                    |
//+------------------------------------------------------------------+
#include "..\Containers\Panel.mqh"
//+------------------------------------------------------------------+
//| TabField object class of WForms TabControl                       |
//+------------------------------------------------------------------+
class CTabField : public CContainer
  {
private:
//--- Find and return a pointer to the header object corresponding to the number of this tab
   CWinFormBase     *GetHeaderObj(void);
//--- Create a new graphical object
   virtual CGCnvElement *CreateNewGObject(const ENUM_GRAPH_ELEMENT_TYPE type,
                                          const int element_num,
                                          const string descript,
                                          const int x,
                                          const int y,
                                          const int w,
                                          const int h,
                                          const color colour,
                                          const uchar opacity,
                                          const bool movable,
                                          const bool activity);
protected:
//--- Protected constructor with object type, chart ID and subwindow
                     CTabField(const ENUM_GRAPH_ELEMENT_TYPE type,
                               const long chart_id,
                               const int subwindow,
                               const string descript,
                               const int x,
                               const int y,
                               const int w,
                               const int h);
public:
//--- Draws a field frame depending on the location of the header
   virtual void      DrawFrame(void);
//--- (1) Set and (2) return the tab index
   void              SetPageNumber(const int value)         { this.SetProperty(CANV_ELEMENT_PROP_TAB_PAGE_NUMBER,value);         }
   int               PageNumber(void)                 const { return (int)this.GetProperty(CANV_ELEMENT_PROP_TAB_PAGE_NUMBER);   }
//--- Clear the element filling it with color and opacity
   virtual void      Erase(const color colour,const uchar opacity,const bool redraw=false);
//--- Clear the element with a gradient fill
   virtual void      Erase(color &colors[],const uchar opacity,const bool vgradient,const bool cycle,const bool redraw=false);
//--- Constructors
                     CTabField(const long chart_id,
                               const int subwindow,
                               const string descript,
                               const int x,
                               const int y,
                               const int w,
                               const int h);
  };
//+------------------------------------------------------------------+
//| Protected constructor with an object type,                       |
//| chart ID and subwindow                                           |
//+------------------------------------------------------------------+
CTabField::CTabField(const ENUM_GRAPH_ELEMENT_TYPE type,
                     const long chart_id,
                     const int subwindow,
                     const string descript,
                     const int x,
                     const int y,
                     const int w,
                     const int h) : CContainer(type,chart_id,subwindow,descript,x,y,w,h)
  {
   this.SetTypeElement(GRAPH_ELEMENT_TYPE_WF_TAB_FIELD);
   this.m_type=OBJECT_DE_TYPE_GWF_HELPER;
   this.SetBorderSizeAll(1);
   this.SetBorderStyle(FRAME_STYLE_SIMPLE);
   this.SetOpacity(CLR_DEF_CONTROL_TAB_PAGE_OPACITY,true);
   this.SetBackgroundColor(CLR_DEF_CONTROL_TAB_PAGE_BACK_COLOR,true);
   this.SetBackgroundColorMouseDown(CLR_DEF_CONTROL_TAB_PAGE_MOUSE_DOWN);
   this.SetBackgroundColorMouseOver(CLR_DEF_CONTROL_TAB_PAGE_MOUSE_OVER);
   this.SetBorderColor(CLR_DEF_CONTROL_TAB_PAGE_BORDER_COLOR,true);
   this.SetBorderColorMouseDown(CLR_DEF_CONTROL_TAB_PAGE_BORDER_MOUSE_DOWN);
   this.SetBorderColorMouseOver(CLR_DEF_CONTROL_TAB_PAGE_BORDER_MOUSE_OVER);
   this.SetForeColor(CLR_DEF_FORE_COLOR,true);
   this.SetPaddingAll(3);
  }
//+------------------------------------------------------------------+
//| Constructor                                                      |
//+------------------------------------------------------------------+
CTabField::CTabField(const long chart_id,
                     const int subwindow,
                     const string descript,
                     const int x,
                     const int y,
                     const int w,
                     const int h) : CContainer(GRAPH_ELEMENT_TYPE_WF_TAB_FIELD,chart_id,subwindow,descript,x,y,w,h)
  {
   this.SetTypeElement(GRAPH_ELEMENT_TYPE_WF_TAB_FIELD);
   this.m_type=OBJECT_DE_TYPE_GWF_HELPER;
   this.SetBorderSizeAll(1);
   this.SetBorderStyle(FRAME_STYLE_SIMPLE);
   this.SetOpacity(CLR_DEF_CONTROL_TAB_PAGE_OPACITY,true);
   this.SetBackgroundColor(CLR_DEF_CONTROL_TAB_PAGE_BACK_COLOR,true);
   this.SetBackgroundColorMouseDown(CLR_DEF_CONTROL_TAB_PAGE_MOUSE_DOWN);
   this.SetBackgroundColorMouseOver(CLR_DEF_CONTROL_TAB_PAGE_MOUSE_OVER);
   this.SetBorderColor(CLR_DEF_CONTROL_TAB_PAGE_BORDER_COLOR,true);
   this.SetBorderColorMouseDown(CLR_DEF_CONTROL_TAB_PAGE_BORDER_MOUSE_DOWN);
   this.SetBorderColorMouseOver(CLR_DEF_CONTROL_TAB_PAGE_BORDER_MOUSE_OVER);
   this.SetForeColor(CLR_DEF_FORE_COLOR,true);
   this.SetPaddingAll(3);
  }
//+------------------------------------------------------------------+
//| Find and return a pointer to the header                          |
//| corresponding to the tab index                                   |
//+------------------------------------------------------------------+
CWinFormBase *CTabField::GetHeaderObj(void)
  {
//--- Get the pointer to the base object
   CWinFormBase *base=this.GetBase();
   if(base==NULL)
      return NULL;
//--- From the base object, get the list of tab header objects
   CArrayObj *list=base.GetListElementsByType(GRAPH_ELEMENT_TYPE_WF_TAB_HEADER);
//--- Leave only the object whose tab index matches this one in the obtained list
   list=CSelect::ByGraphCanvElementProperty(list,CANV_ELEMENT_PROP_TAB_PAGE_NUMBER,this.PageNumber(),EQUAL);
//--- Return the pointer to the found object from the list
   return(list!=NULL ? list.At(0) : NULL);
  }
//+------------------------------------------------------------------+
//| Draw the element frame depending on the header position          |
//+------------------------------------------------------------------+
void CTabField::DrawFrame(void)
  {
//--- Set the initial coordinates
   int x1=0;
   int y1=0;
   int x2=this.Width()-1;
   int y2=this.Height()-1;
//--- Get the tab header corresponding to the field
   CTabHeader *header=this.GetHeaderObj();
   if(header==NULL)
      return;
//--- Draw a rectangle that completely outlines the field
   this.DrawRectangle(x1,y1,x2,y2,this.BorderColor(),this.Opacity());
//--- Depending on the location of the header, draw a line on the edge adjacent to the header.
//--- The line size is calculated from the heading size and corresponds to it with a one-pixel indent on each side
//--- thus, visually the edge will not be drawn on the adjacent side of the header
   switch(header.Alignment())
     {
      case CANV_ELEMENT_ALIGNMENT_TOP     :
        this.DrawLine(header.CoordXRelative()+1,0,header.RightEdgeRelative()-2,0,this.BackgroundColor(),this.Opacity());
        break;
      case CANV_ELEMENT_ALIGNMENT_BOTTOM  :
        this.DrawLine(header.CoordXRelative()+1,this.Height()-1,header.RightEdgeRelative()-2,this.Height()-1,this.BackgroundColor(),this.Opacity());
        break;
      case CANV_ELEMENT_ALIGNMENT_LEFT    :
        this.DrawLine(0,header.BottomEdgeRelative()-2,0,header.CoordYRelative()+1,this.BackgroundColor(),this.Opacity());
        break;
      case CANV_ELEMENT_ALIGNMENT_RIGHT   :
        this.DrawLine(this.Width()-1,header.BottomEdgeRelative()-2,this.Width()-1,header.CoordYRelative()+1,this.BackgroundColor(),this.Opacity());
        break;
      default:
        break;
     }
  }
//+------------------------------------------------------------------+
//| Clear the element filling it with color and opacity              |
//+------------------------------------------------------------------+
void CTabField::Erase(const color colour,const uchar opacity,const bool redraw=false)
  {
//--- Fill the element having the specified color and the redrawing flag
   CGCnvElement::EraseNoCrop(colour,opacity,false);
//--- If the object has a frame, draw it
   if(this.BorderStyle()!=FRAME_STYLE_NONE)
      this.DrawFrame();
//--- Update the element having the specified redrawing flag
   this.Crop();
   this.Update(redraw);
  }
//+------------------------------------------------------------------+
//| Clear the element with a gradient fill                           |
//+------------------------------------------------------------------+
void CTabField::Erase(color &colors[],const uchar opacity,const bool vgradient,const bool cycle,const bool redraw=false)
  {
//--- Fill the element having the specified color array and the redrawing flag
   CGCnvElement::EraseNoCrop(colors,opacity,vgradient,cycle,false);
//--- If the object has a frame, draw it
   if(this.BorderStyle()!=FRAME_STYLE_NONE)
      this.DrawFrame();
//--- Update the element having the specified redrawing flag
   this.Crop();
   this.Update(redraw);
  }
//+------------------------------------------------------------------+
//| Create a new graphical object                                    |
//+------------------------------------------------------------------+
CGCnvElement *CTabField::CreateNewGObject(const ENUM_GRAPH_ELEMENT_TYPE type,
                                          const int obj_num,
                                          const string descript,
                                          const int x,
                                          const int y,
                                          const int w,
                                          const int h,
                                          const color colour,
                                          const uchar opacity,
                                          const bool movable,
                                          const bool activity)
  {
   CGCnvElement *element=NULL;
   switch(type)
     {
      case GRAPH_ELEMENT_TYPE_ELEMENT                 : element=new CGCnvElement(type,this.ID(),obj_num,this.ChartID(),this.SubWindow(),descript,x,y,w,h,colour,opacity,movable,activity); break;
      case GRAPH_ELEMENT_TYPE_FORM                    : element=new CForm(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_CONTAINER            : element=new CContainer(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_GROUPBOX             : element=new CGroupBox(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_PANEL                : element=new CPanel(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_LABEL                : element=new CLabel(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_CHECKBOX             : element=new CCheckBox(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_RADIOBUTTON          : element=new CRadioButton(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_BUTTON               : element=new CButton(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_LIST_BOX             : element=new CListBox(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_LIST_BOX_ITEM        : element=new CListBoxItem(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_CHECKED_LIST_BOX     : element=new CCheckedListBox(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_BUTTON_LIST_BOX      : element=new CButtonListBox(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_TAB_HEADER           : element=new CTabHeader(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_TAB_FIELD            : element=new CTabField(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_TAB_CONTROL          : element=new CTabControl(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_ARROW_BUTTON         : element=new CArrowButton(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_ARROW_BUTTON_UP      : element=new CArrowUpButton(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_ARROW_BUTTON_DOWN    : element=new CArrowDownButton(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_ARROW_BUTTON_LEFT    : element=new CArrowLeftButton(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_ARROW_BUTTON_RIGHT   : element=new CArrowRightButton(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_ARROW_BUTTONS_UD_BOX : element=new CArrowUpDownBox(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      case GRAPH_ELEMENT_TYPE_WF_ARROW_BUTTONS_LR_BOX : element=new CArrowLeftRightBox(this.ChartID(),this.SubWindow(),descript,x,y,w,h); break;
      default  : break;
     }
   if(element==NULL)
      ::Print(DFUN,CMessage::Text(MSG_LIB_SYS_FAILED_CREATE_ELM_OBJ),this.TypeElementDescription(type));
   return element;
  }
//+------------------------------------------------------------------+