AutoComboBox.cpp

Go to the documentation of this file.

// AutoComboBox.cpp : implementation file
//

#include "stdafx.h"
#include "gmeactivebrowser.h"
#include "AutoComboBox.h"
#include "ActiveBrowsePropertySheet.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif



// CAutoComboBox

CAutoComboBox::CAutoComboBox(CTreeCtrlEx* pTreeCtrl)
{
        m_pTreeCtrl=pTreeCtrl;
}

CAutoComboBox::~CAutoComboBox()
{
}


BEGIN_MESSAGE_MAP(CAutoComboBox, CComboBox)
        //{{AFX_MSG_MAP(CAutoComboBox)
        ON_CONTROL_REFLECT(CBN_EDITCHANGE, OnEditChange)
        ON_CONTROL_REFLECT(CBN_SELENDOK, OnSelendOk)
        //}}AFX_MSG_MAP
END_MESSAGE_MAP()

// CAutoComboBox message handlers


void CAutoComboBox::OnEditKeyDown(int nVKeyCode)
{
                
        switch(nVKeyCode)
        {
                case VK_RETURN: OnKeyEnter();break;
                case VK_DELETE:;break;
                case VK_BACK:;break;
                case VK_ESCAPE:;break;
                case VK_DOWN:
                        this->ShowDropDown();
                        break;
                case VK_TAB: 
                        {
                                if( ::GetKeyState( VK_CONTROL) < 0) {
                                        CActiveBrowserPropertySheet *p = (CActiveBrowserPropertySheet *)m_pTreeCtrl->GetParent()->GetParent();
                                        if( p) p->nextTab( ::GetKeyState( VK_SHIFT) >= 0);
                                } else {
                                        m_pTreeCtrl->SetFocus();
                                }
                        }break;
        }

}

void CAutoComboBox::Fill(CString& strText, BOOL bReload)
{
        // Clear combo
        for (int i = GetCount() - 1; i >= 0; i--)
        {
                DeleteString(i);
        }

        if(strText=="")
        {
                m_strPrevTxt="";
                return;
        }
        if(bReload)
        {
                
                m_pTreeCtrl->FindTextInItems(strText,NULL,m_strResults,m_hResults);
        }

        // Fill combo
        for(int i=0;i<=m_strResults.GetUpperBound();i++)
        {
                AddString(m_strResults.GetAt(i));
        }


        if(m_strResults.GetSize()>0)
        {
                
                // Setting selection
                SetCurSel(0);
                
                // Saving current combo edit text                       
                m_strPrevTxt=strText;

                //Getting Current text again after drop down
                CString strComboText;
                GetWindowText(strComboText);

                // Set the selection to be all characters after the current selection.
                SetEditSel(m_strPrevTxt.GetLength(), strComboText.GetLength());
                
        }

}



void CAutoComboBox::OnEditChange() 
{
        // Get edit text
        CString strComboText;
        GetWindowText(strComboText);
        
        if(strComboText==m_strPrevTxt) // Deleted selection
        {
                return;
        }

        // Filling the combo
        Fill(strComboText);


        // Dumping CStringListEx for debug purposes
        #ifdef _DEBUG
        TRACE("\nCStringArray:\n");
        for( int j=0;j<=m_strResults.GetUpperBound();j++)
        {
                TRACE1("%d :",j);
                TRACE(m_strResults.GetAt(j));
                TRACE("\n");
        }
        TRACE("___________________________________________________________\n");
        #endif
                                        
}



void CAutoComboBox::OnSelendOk() 
{
        int nCurSel=GetCurSel();

        if(nCurSel!=CB_ERR)
        {               
                m_strPrevTxt=m_strResults.GetAt(nCurSel);
                m_pTreeCtrl->SetFocus();
                m_pTreeCtrl->ClearSelection();
                m_pTreeCtrl->SelectItem(m_hResults.GetAt(nCurSel));

        }
}

void CAutoComboBox::SetSelection(HTREEITEM hItem)
{
        
        CString strItemText=m_pTreeCtrl->GetItemText(hItem);
        
        Fill(strItemText);
        
        if(strItemText=="")return;

        for(int i=0;i<=m_hResults.GetUpperBound();i++)
        {
                if(m_hResults.GetAt(i)==hItem)
                {
                        SetCurSel(i);
                        return;
                }
        }
        ASSERT(FALSE);

}

void CAutoComboBox::OnKeyEnter()
{
        int nCurSel=GetCurSel();
        if(nCurSel==CB_ERR)
        {
                // Get the current text
                CString strComboText;
                GetWindowText(strComboText);

                m_strPrevTxt=strComboText;

                for(int i=0;i<=m_strResults.GetUpperBound();i++)
                {
                        if(m_strResults.GetAt(i)==strComboText)
                        {
                                SetCurSel(i);
                                OnSelendOk();
                                return;
                        }
                }
        }
}


//____________________________________________________
// NOT CALLED: We do not use this function, but can be useful 
BOOL CAutoComboBox::Filter(CString &strFilter)
{

        for(int i=0;i<=m_strResults.GetUpperBound();i++)
        {
                if(m_strResults.GetAt(i).Find(strFilter)!=0)
                {
                        m_strResults.RemoveAt(i);
                        m_hResults.RemoveAt(i);
                        i--;
                }
        }
        return m_strResults.GetSize();

}
//___________________________________________________