Form Designer

// ValueEditor.cpp: implementation of the CValueEditor class.
//
// Author : David Shepherd
//			Copyright (c) 2002, DaeDoe-Software
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "ValueEditor.h"

/////////////////////////////////////////////////////////////////////////////
// CValueEditor

CValueEditor::CValueEditor() : m_Edit(this,VE_MSG_MAP_EDIT)
{
	// initialise everything
	m_RunMessageLoop=TRUE;
}

CValueEditor::~CValueEditor()
{
	// clean up
}

BOOL CValueEditor::EditValue(const CWindow &Parent,const CRect &Rect)
{
TRY
	USES_CONVERSION;

	// reinitialise everything to allow object reuse
	m_RunMessageLoop=TRUE;
	// create the value editor window (invisible)
	if(Create(Parent,CRect(Rect),_T(""),WS_POPUP|WS_CLIPCHILDREN)==NULL)
	{
		throw std::exception();
	}
	// set the edit box text
	if(m_Edit.SetWindowText(W2CT(m_Value.c_str()))==FALSE)
	{
		throw std::exception();
	}
	// give focus to the edit box
	if(m_Edit.SetFocus()==NULL)
	{
		throw std::exception();
	}
	// show the value editor
	(void)ShowWindow(SW_SHOW);
	// run the message loop
	while(m_RunMessageLoop)
	{
		// get the next message
		// todo : check for the WM_QUIT message
		MSG Message;
		(void)GetMessage(&Message,NULL,0,0);
		// process the message
		(void)TranslateMessage(&Message);
		(void)DispatchMessage(&Message);
	}
CATCH_ALL
	// clean up
	if(IsWindow())
	{
		(void)DestroyWindow();
	}
	return Caught ? FALSE : TRUE;	// return TRUE on success
}

LRESULT CValueEditor::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
TRY
	// create the edit box
	if(m_Edit.Create(*this,CRect(0,0,0,0),_T(""),
		// standard window styles
		WS_CHILD|WS_VISIBLE|
		// edit box styles
		ES_AUTOHSCROLL,
		// extended window styles
		0,
		// id
		VE_IDC_EDIT)==NULL)
	{
		throw std::exception();
	}
	// set the edit box font
	CFontHandle hFont=(HFONT)GetStockObject(DEFAULT_GUI_FONT);
	if(hFont==NULL)
	{
		throw std::exception();
	}
	m_Edit.SetFont(hFont);
CATCH_ALL
	return Caught ? -1 : 0;	// fail creation on error
}

LRESULT CValueEditor::OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
TRY
	// get the client rect
	CRect ClientRect(0,0,0,0);
	if(GetClientRect(ClientRect)==FALSE)
	{
		throw std::exception();
	}
	// size the edit box to fill the entire client area
	if(m_Edit.SetWindowPos(NULL,ClientRect,SWP_NOZORDER)==FALSE)
	{
		throw std::exception();
	}
CATCH_ALL
	return 0;
}

LRESULT CValueEditor::OnActivate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
TRY
	// if the window is being deactivated
	if(LOWORD(wParam)==WA_INACTIVE)
	{
		// get the window being activated
		CWindow ActiveWindow=(HWND)lParam;
		// if the value editor is no longer active
		if(ActiveWindow!=*this and ActiveWindow!=m_Edit)
		{
			// hide the value editor immediately
			(void)ShowWindow(SW_HIDE);
			// shut down
			m_RunMessageLoop=FALSE;
		}
	}
CATCH_ALL
	return 0;
}

LRESULT CValueEditor::OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
TRY
	// get the window receiving focus
	CWindow FocusWindow=(HWND)wParam;
	// if the value editor no longer has the focus
	if(FocusWindow!=*this and FocusWindow!=m_Edit)
	{
		// hide the value editor immediately
		(void)ShowWindow(SW_HIDE);
		// shut down
		m_RunMessageLoop=FALSE;
	}
CATCH_ALL
	return 0;
}

LRESULT CValueEditor::OnChangeEdit(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled)
{
TRY
	// get the edit box text
	CComBSTR Text;
	if(m_Edit.GetWindowText(&Text)==FALSE)
	{
		throw std::exception();
	}
	// update the value
	m_Value=BSTR2W(Text);
CATCH_ALL
	return 0;
}