EasyAndFastMod/Controls/MenuItem.mqh

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+
//|                                                     MenuItem.mqh |
//|                        Copyright 2015, MetaQuotes Software Corp. |
//|                                              http://www.mql5.com |
//+------------------------------------------------------------------+
#include "..\Element.mqh"
#include "Button.mqh"
class CContextMenu;
//+------------------------------------------------------------------+
//| ;0AA A>740=8O ?C=:B0 <5=N                                       |
//+------------------------------------------------------------------+
class CMenuItem : public CButton
  {
private:
   //--- #:070B5;L =0 ?@54K4CI89 C75;
   CMenuItem        *m_prev_node;
   //--- #:070B5;L =0 ?@82O70==>5 :>=B5:AB=>5 <5=N
   CContextMenu     *m_context_menu;
   //--- "8? ?C=:B0 <5=N
   ENUM_TYPE_MENU_ITEM m_type_menu_item;
   //--- !2>9AB20 ?@87=0:0 :>=B5:AB=>3> <5=N
   bool              m_show_right_arrow;
   int               m_arrow_x_gap;
   //--- !>AB>O=85 G5:1>:A0
   bool              m_checkbox_state;
   //--- !>AB>O=85 @048>-:=>?:8 8 5Q 845=B8D8:0B>@
   bool              m_radiobutton_state;
   int               m_radiobutton_id;
   //---
public:
                     CMenuItem(void);
                    ~CMenuItem(void);
   //--- 5B>4K 4;O A>740=8O ?C=:B0 <5=N
   bool              CreateMenuItem(const string text,const int x_gap,const int y_gap);
   //---
public:
   //--- (1) >;CG5=85 8 (2) A>E@0=5=85 C:070B5;O ?@54K4CI53> C7;0
   void              GetPrevNodePointer(CMenuItem &object)                { m_prev_node=::GetPointer(object);    }
   CMenuItem        *GetPrevNodePointer(void)                       const { return(m_prev_node);                 }
   void              GetContextMenuPointer(CContextMenu &object)          { m_context_menu=::GetPointer(object); }
   CContextMenu     *GetContextMenuPointer(void)                    const { return(m_context_menu);              }
   //--- (1) #AB0=>2:0 8 ?>;CG5=85 B8?0, (2) =><5@ 8=45:A0
   void              TypeMenuItem(const ENUM_TYPE_MENU_ITEM type)         { m_type_menu_item=type;               }
   ENUM_TYPE_MENU_ITEM TypeMenuItem(void)                           const { return(m_type_menu_item);            }
   //--- (1) B>1@065=85 ?@87=0:0 =0;8G8O :>=B5:AB=>3> <5=N, (2) >1I55 A>AB>O=85 ?C=:B0-G5:1>:A0
   void              ShowRightArrow(const bool flag)                      { m_show_right_arrow=flag;             }
   bool              CheckBoxState(void)                            const { return(m_checkbox_state);            }
   void              CheckBoxState(const bool state);
   //--- (1) 45=B8D8:0B>@ @048>-?C=:B0, (2) A>AB>O=85 @048>-?C=:B0
   void              RadioButtonID(const int id)                          { m_radiobutton_id=id;                 }
   int               RadioButtonID(void)                            const { return(m_radiobutton_id);            }
   bool              RadioButtonState(void)                         const { return(m_radiobutton_state);         }
   void              RadioButtonState(const bool state);
   //---
public:
   //--- 1@01>BG8: A>1KB89 3@0D8:0
   virtual void      OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam);
   //--- #?@02;5=85
   virtual void      Show(void);
   virtual void      Hide(void);
   //---  8AC5B M;5<5=B
   virtual void      Draw(void);
   //---
private:
   //--- 060B85 =0 ?C=:B5 <5=N
   bool              OnClickMenuItem(const string pressed_object,const int id,const int index);
   //---  8AC5B :0@B8=:C
   virtual void      DrawImage(void);
  };
//+------------------------------------------------------------------+
//| Constructor                                                      |
//+------------------------------------------------------------------+
CMenuItem::CMenuItem(void) : m_type_menu_item(MI_SIMPLE),
                             m_checkbox_state(true),
                             m_radiobutton_id(0),
                             m_radiobutton_state(false),
                             m_show_right_arrow(true),
                             m_arrow_x_gap(18)
  {
//--- !>E@0=8< 8<O :;0AA0 M;5<5=B0 2 107>2>< :;0AA5
   CElementBase::ClassName(CLASS_NAME);
  }
//+------------------------------------------------------------------+
//| Destructor                                                       |
//+------------------------------------------------------------------+
CMenuItem::~CMenuItem(void)
  {
  }
//+------------------------------------------------------------------+
//| 1@01>BG8: A>1KB89                                               |
//+------------------------------------------------------------------+
void CMenuItem::OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam)
  {
//--- 1@01>B0BL A>1KB85 2 107>2>< :;0AA5
   CButton::OnEvent(id,lparam,dparam,sparam);
//--- 1@01>B:0 A>1KB8O =060B8O ;52>9 :=>?:8 <KH8 =0 M;5<5=B5
   if(id==CHARTEVENT_CUSTOM+ON_CLICK_BUTTON)
     {
      if(OnClickMenuItem(sparam,(uint)lparam,(uint)dparam))
         return;
      //---
      return;
     }
  }
//+------------------------------------------------------------------+
//| !>740QB M;5<5=B "C=:B <5=N"                                     |
//+------------------------------------------------------------------+
bool CMenuItem::CreateMenuItem(const string text,const int x_gap,const int y_gap)
  {
//--- K9B8, 5A;8 =5B C:070B5;O =0 3;02=K9 M;5<5=B
   if(!CElement::CheckMainPointer())
      return(false);
//--- A;8 C:070B5;O =0 ?@54K4CI89 C75; =5B, B> ?C=:B =5 O2;O5BAO G0ABLN :>=B5:AB=>3> <5=N
   if(::CheckPointer(m_prev_node)==POINTER_INVALID)
     {
      //--- K9B8, 5A;8 CAB0=>2;5==K9 B8? =5 A>>B25BAB2C5B
      if(m_type_menu_item!=MI_SIMPLE && m_type_menu_item!=MI_HAS_CONTEXT_MENU)
        {
         ::Print(__FUNCTION__," > "8? =57028A8<>3> ?C=:B0 <5=N <>65B 1KBL B>;L:> MI_SIMPLE 8;8 MI_HAS_CONTEXT_MENU, ",
                 "B> 5ABL, A =0;8G85< :>=B5:AB=>3> <5=N.\n",
                 __FUNCTION__," > #AB0=>28BL B8? ?C=:B0 <5=N <>6=> A ?><>ILN <5B>40 CMenuItem::TypeMenuItem()");
         return(false);
        }
     }
//--- ?@545;8< O@;K:8, 5A;8 ?C=:B 8<55B 2K?040NI55 <5=N 
   if(m_type_menu_item==MI_HAS_CONTEXT_MENU)
     {
      CButton::TwoState(true);
      //--- A;8 =C6=> >B>1@060BL AB@5;:C, :0: ?@87=0: =0;8G8O :>=B5:AB=>3> <5=N
      if(m_show_right_arrow)
        {
         if(CButton::ImagesGroupTotal()<2)
           {
            CButton::AddImagesGroup(CElementBase::XSize()-m_arrow_x_gap,CElement::IconYGap());
            CButton::AddImage(1,RESOURCE_ARROW_RIGHT_BLACK);
            CButton::AddImage(1,RESOURCE_ARROW_RIGHT_WHITE);
           }
        }
     }
//--- A;8 MB> G5:1>:A
   if(m_type_menu_item==MI_CHECKBOX)
     {
      //--- 7>1@065=8O ?> C<>;G0=8N
      CButton::SetImage(0,0,RESOURCE_CHECKBOX_MINI_BLACK);
      CButton::SetImage(0,1,RESOURCE_CHECKBOX_MINI_WHITE);
      CButton::AddImage(0,INT_MAX);
     }
//--- A;8 MB> @048>-?C=:B
   else if(m_type_menu_item==MI_RADIOBUTTON)
     {
      //--- 7>1@065=8O ?> C<>;G0=8N
      CButton::SetImage(0,0,RESOURCE_CHECKBOX_MINI_BLACK);
      CButton::SetImage(0,1,RESOURCE_CHECKBOX_MINI_WHITE);
      CButton::AddImage(0,INT_MAX);
     }
//--- !2>9AB20
   CButton::NamePart("menu_item");
//--- !>74048< M;5<5=B C?@02;5=8O
   if(!CButton::CreateButton(text,x_gap,y_gap))
      return(false);
//---
   return(true);
  }
//+------------------------------------------------------------------+
//| 7<5=5=85 A>AB>O=8O ?C=:B0 <5=N B8?0 G5:1>:A                     |
//+------------------------------------------------------------------+
void CMenuItem::CheckBoxState(const bool state)
  {
   m_checkbox_state=state;
   Update(true);
  }
//+------------------------------------------------------------------+
//| 7<5=5=85 A>AB>O=8O ?C=:B0 <5=N B8?0 @048>?C=:B                  |
//+------------------------------------------------------------------+
void CMenuItem::RadioButtonState(const bool state)
  {
   m_radiobutton_state=state;
   Update(true);
  }
//+------------------------------------------------------------------+
//| 5;05B 2848<K< ?C=:B <5=N                                        |
//+------------------------------------------------------------------+
void CMenuItem::Show(void)
  {
//--- K9B8, 5A;8 M;5<5=B C65 2848<
   if(CElementBase::IsVisible())
      return;
//--- >:070BL M;5<5=B
   CButton::Show();
//--- 1=>28BL ?>;>65=85 >1J5:B>2
   Moving();
  }
//+------------------------------------------------------------------+
//| !:@K205B ?C=:B <5=N                                              |
//+------------------------------------------------------------------+
void CMenuItem::Hide(void)
  {
//--- K9B8, 5A;8 M;5<5=B A:@KB
   if(!CElementBase::IsVisible())
      return;
//--- !:@KBL M;5<5=B
   CButton::Hide();
//--- 1=C;5=85 ?5@5<5==KE
   CElementBase::IsVisible(false);
   CElementBase::MouseFocus(false);
  }
//+------------------------------------------------------------------+
//| 1@01>B:0 =060B8O =0 ?C=:B5 <5=N                                 |
//+------------------------------------------------------------------+
bool CMenuItem::OnClickMenuItem(const string pressed_object,const int id,const int index)
  {
//--- K945<, 5A;8 =060B85 1K;> =5 =0 :=>?:5
   if(::StringFind(pressed_object,"menu_item")<0)
      return(false);
//--- K9B8, 5A;8 (1) 845=B8D8:0B>@K =5 A>2?040NB 8;8 (2) M;5<5=B 701;>:8@>20=
   if(id!=CElementBase::Id() || index!=CElementBase::Index() || CElementBase::IsLocked())
      return(false);
      
//--- A;8 MB>B ?C=:B A>45@68B :>=B5:AB=>5 <5=N
   if(m_type_menu_item==MI_HAS_CONTEXT_MENU)
     {
      if(::CheckPointer(m_context_menu)==POINTER_INVALID)
         return(true);
      //--- A;8 2K?040NI55 <5=N MB>3> ?C=:B0 =5 0:B828@>20=>
      if(!m_context_menu.IsVisible())
        {
         //--- >:070BL :>=B5:AB=>5 <5=N
         m_context_menu.Show();
         //--- !>>1I5=85 =0 2>AAB0=>2;5=85 4>ABC?=KE M;5<5=B>2
         ::EventChartCustom(m_chart_id,ON_SET_AVAILABLE,CElementBase::Id(),0,"");
         //--- B?@028< A>>1I5=85 >1 87<5=5=88 2 3@0D8G5A:>< 8=B5@D59A5
         ::EventChartCustom(m_chart_id,ON_CHANGE_GUI,CElementBase::Id(),0.0,"");
        }
      else
        {
         int is_restore=1;
         if(CheckPointer(m_prev_node)!=POINTER_INVALID)
            is_restore=0;
         //--- !:@KBL :>=B5:AB=>5 <5=N
         m_context_menu.Hide();
         //--- B?@028< A83=0; 4;O 70:@KB8O :>=B5:AB=KE <5=N, :>B>@K5 40;LH5 MB>3> ?C=:B0
         ::EventChartCustom(m_chart_id,ON_HIDE_BACK_CONTEXTMENUS,CElementBase::Id(),0,"");
         //--- !>>1I5=85 =0 2>AAB0=>2;5=85 4>ABC?=KE M;5<5=B>2
         ::EventChartCustom(m_chart_id,ON_SET_AVAILABLE,CElementBase::Id(),is_restore,"");
         //--- B?@028< A>>1I5=85 >1 87<5=5=88 2 3@0D8G5A:>< 8=B5@D59A5
         ::EventChartCustom(m_chart_id,ON_CHANGE_GUI,CElementBase::Id(),0.0,"");
        }
     }
//--- A;8 MB>B ?C=:B =5 A>45@68B :>=B5:AB=>5 <5=N, => O2;O5BAO G0ABLN :>=B5:AB=>3> <5=N
   else
     {
      //--- @5D8:A A>>1I5=8O A 8<5=5< ?@>3@0<<K
      string message=CElementBase::ProgramName();
      //--- A;8 MB> G5:1>:A, 87<5=8< 53> A>AB>O=85
      if(m_type_menu_item==MI_CHECKBOX)
        {
         m_checkbox_state=(m_checkbox_state)? false : true;
         //--- >1028< 2 A>>1I5=85, GB> MB> G5:1>:A
         message+="_checkbox";
        }
      //--- A;8 MB> @048>-?C=:B, 87<5=8< 53> A>AB>O=85
      else if(m_type_menu_item==MI_RADIOBUTTON)
        {
         m_radiobutton_state=(m_radiobutton_state)? false : true;
         //--- >1028< 2 A>>1I5=85, GB> MB> @048>-?C=:B
         message+="_radioitem_"+(string)m_radiobutton_id;
        }
      //--- B60BL :=>?:C
      CElementBase::MouseFocus(false);
      CElement::Update(true);
      //--- B?@028< A>>1I5=85 >1 MB><
      ::EventChartCustom(m_chart_id,ON_CLICK_MENU_ITEM,CElementBase::Id(),CElementBase::Index(),message);
     }
//---
   return(true);
  }
//+------------------------------------------------------------------+
//|  8AC5B M;5<5=B                                                   |
//+------------------------------------------------------------------+
void CMenuItem::Draw(void)
  {
//--- 0@8A>20BL D>=
   CButton::DrawBackground();
//--- 0@8A>20BL @0<:C
   CButton::DrawBorder();
//--- 0@8A>20BL :0@B8=:C
   if(m_type_menu_item!=MI_SIMPLE)
      CMenuItem::DrawImage();
   else
      CButton::DrawImage();
//--- 0@8A>20BL B5:AB
   CElement::DrawText();
  }
//+------------------------------------------------------------------+
//|  8AC5B :0@B8=:C                                                  |
//+------------------------------------------------------------------+
void CMenuItem::DrawImage(void)
  {
//--- ?@545;8< 8=45:A
   uint image_index=0;
//---
   if(m_type_menu_item==MI_CHECKBOX)
     {
      image_index=(m_checkbox_state)?(m_mouse_focus)? 1 : 0 : 2;
      //--- !>E@0=8BL 8=45:A 2K1@0==>3> 87>1@065=8O
      CElement::ChangeImage(0,image_index);
     }
   else if(m_type_menu_item==MI_RADIOBUTTON)
     {
      image_index=(m_radiobutton_state)?(m_mouse_focus)? 1 : 0 : 2;
      //--- !>E@0=8BL 8=45:A 2K1@0==>3> 87>1@065=8O
      CElement::ChangeImage(0,image_index);
     }
   else if(m_type_menu_item==MI_HAS_CONTEXT_MENU)
     {
      image_index=(m_mouse_focus || m_is_pressed)? 1 : 0;
      //--- !>E@0=8BL 8=45:A 2K1@0==>3> 87>1@065=8O
      CElement::ChangeImage(0,0);
      CElement::ChangeImage(1,image_index);
     }
   else
     {
      //--- !>E@0=8BL 8=45:A 2K1@0==>3> 87>1@065=8O
      CElement::ChangeImage(0,image_index);
     }
//---  8AC5< :0@B8=:C
   CElement::DrawImage();
  }
//+------------------------------------------------------------------+