src/widget.h

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/*
* Copyright (c) 2006 by Kirill Kolodyazhniy.
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/

#ifndef M_WIDGET_H
#define M_WIDGET_H

namespace MWidgets
{
        enum WIDGET_TYPE
        {
                WINDOW,
                DOCKWINDOW,
                DIALOG,
                GROUPBOX,
                LABEL,
                TEXTBOX,
                BUTTON,
                CHECKBOX,
                RADIOBUTTON,
                COMBOBOX,
                STATUSBAR,
                GRID
        };      
        class ContextMenu;
        class Widget
        {
        protected:
                HWND m_hWnd; 
                HINSTANCE m_hInstance; 
                WNDPROC  m_prevWndProc; 
                HMENU m_hContextMenu;
                std::map<std::string,UINT> m_mapHotKeyIds;
                std::map<UINT,BaseEventHandler*> m_mapHotKeyHendles;

        protected:
                BaseEventHandler *m_pOnCreateHandler;
                BaseEventHandler *m_pOnLButtonDownHandler;
                BaseEventHandler *m_pOnRButtonDownHandler;
                BaseEventHandler *m_pOnSizeHandler;
        protected:
                friend class ContextMenu;
                virtual LRESULT OnMessage (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
                virtual void OnCommand( WORD code,WORD  id);
                static Widget *GetObjectFromHwnd(HWND hWnd);
                static BOOL CALLBACK DestroyChildProc(HWND hwnd,LPARAM lParam);

                void ProcessMenu(WORD id);
                void ProcessAccelerators(WORD id);
                void ProcessHotKey(WORD id);
        public:
                static LRESULT CALLBACK WindowProcedure (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
                Widget();
                void Create(int x,int y,int w,int h,string caption,string classname,DWORD styles,HWND parent,DWORD stylesex=0);
                virtual ~Widget();
                HWND GetHwnd();
                HINSTANCE GetHinstance();
                void Show();
                void Hide();
                void SetText(string text);
                string GetText();
                void DestroyChildWindows();
                void SetMenuBar(Menu* pMenu);
                void RemoveMenuBar();
                template<class T>
                void SetOnCreateHandler(T *pProcessor,void (T::*EventCallBack)(Widget* sender))
                {
                        if(m_pOnCreateHandler!=NULL)
                                delete m_pOnCreateHandler;
                        m_pOnCreateHandler=new EventHandler<T>(pProcessor,EventCallBack);
                };
                virtual void OnCreate();
                template<class T>
                void SetLeftButtonDownHandler(T *pProcessor,void (T::*EventCallBack)(Widget* sender,int x,int y,DWORD buttonMask))
                {
                        if(m_pOnLButtonDownHandler!=NULL)
                                delete m_pOnLButtonDownHandler;
                        m_pOnLButtonDownHandler=new MouseEventHandler<T>(pProcessor,EventCallBack);
                };
                virtual void OnLeftButtonDown(int x,int y,DWORD buttonMask);
                template<class T>
                void SetRightButtonDownHandler(T *pProcessor,void (T::*EventCallBack)(Widget* sender,int x,int y,DWORD buttonMask))
                {
                        if(m_pOnRButtonDownHandler!=NULL)
                                delete m_pOnRButtonDownHandler;
                        m_pOnRButtonDownHandler=new MouseEventHandler<T>(pProcessor,EventCallBack);
                };
                virtual void OnRightButtonDown(int x,int y,DWORD buttonMask);
                template<class T>
                void SetOnSizeHandler(T *pProcessor,void (T::*EventCallBack)(Widget* sender))
                {
                        if(m_pOnSizeHandler!=NULL)
                                delete m_pOnSizeHandler;
                        m_pOnSizeHandler=new WindowSizeEventHandler<T>(pProcessor,EventCallBack);
                };
                virtual void OnSize(int left,int top,int right,int bottom);
                void Enable(BOOL bEnable);
                bool IsDestroyed();
                void Destroy();
                void SetHotKey(UINT fsModifiers,UINT vk,BaseEventHandler* pEventHandler);
                template<class T>
                void SetHotKey(UINT fsModifiers,UINT vk,T *pProcessor,void (T::*EventCallBack)(Widget* sender))
                {
                        BaseEventHandler *pEventHandler=new EventHandler<T>(pProcessor,EventCallBack);
                        SetHotKey(fsModifiers, vk,pEventHandler);
                };
                virtual WIDGET_TYPE GetType()=0;
                HWND GetParent();
                void Move(int x,int y);
                void Size(int w,int h);
        };
};

#endif

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