CWE-ou-minkata/Sources/Plasma/PubUtilLib/plWndCtrls/plEdit.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#ifndef plEdit_h_inc
#define plEdit_h_inc


class plEdit : public plControl
{
private:
    bool fRestrictToAlphaNum;
public:
    DECLARE_WINDOWSUBCLASS(plEdit,plControl)

    plDelegate  fChangeDelegate;
    plDelegate  fKillFocusDelegate;

    plEdit()
    {fRestrictToAlphaNum = false;}
    plEdit( plWindow * inOwner, int inId=0, WNDPROC inSuperProc=nil, bool restrict=false )
    : plControl( inOwner, inId, inSuperProc?inSuperProc:_SuperProc ), fRestrictToAlphaNum(restrict)
    {}

    void OpenWindow( bool visible, bool multiline, bool readOnly )
    {
        PerformCreateWindowEx
        (
            WS_EX_CLIENTEDGE,
            nil,
            WS_CHILD | (visible?WS_VISIBLE:0) | ES_LEFT | (multiline?(ES_MULTILINE|WS_VSCROLL|WS_HSCROLL):0) | ES_AUTOVSCROLL | ES_AUTOHSCROLL | (readOnly?ES_READONLY:0),
            0, 0,
            0, 0,
            *fOwnerWindow,
            (HMENU)fControlID,
            plWndCtrls::Instance()
        );
        SendMessage( *this, WM_SETFONT, (WPARAM)GetStockObject(DEFAULT_GUI_FONT), MAKELPARAM(0,0) );
    }
    bool InterceptControlCommand( unsigned int message, unsigned int wParam, LONG lParam )
    {
        if (HIWORD(wParam)==EN_CHANGE)
        {
            fChangeDelegate();
            return 1;
        }
        else if(HIWORD(wParam)==EN_KILLFOCUS)
        {
            fKillFocusDelegate();
            return 1;
        }
        else
            return 0;
    }
    
    virtual LONG OnChar( char ch )
    {
        if (fRestrictToAlphaNum)
        {
            // we only accept 0-9, a-z, A-Z, or backspace
            if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'z') && (ch < 'A' || ch >'Z') && !(ch == VK_BACK))
            {
                MessageBeep(-1); // alert the user
                return FALSE; // and make sure the default handler doesn't get it
            }
        }
        return TRUE;
    }

    bool GetReadOnly()
    {
        CHECK(Handle());
        return (GetWindowLong( *this, GWL_STYLE )&ES_READONLY)!=0;
    }
    void SetReadOnly( bool readOnly )
    {
        CHECK(Handle());
        SendMessage( *this, EM_SETREADONLY, readOnly, 0 );
    }
    int GetLineCount()
    {
        CHECK(Handle());
        return SendMessage( *this, EM_GETLINECOUNT, 0, 0 );
    }
    int GetLineIndex( int line )
    {
        CHECK(Handle());
        return SendMessage( *this, EM_LINEINDEX, line, 0 );
    }
    void GetSelection( int& start, int& end )
    {
        CHECK(Handle());
        SendMessage( *this, EM_GETSEL, (WPARAM)&start, (LPARAM)&end );
    }
    void SetSelection( int start, int end )
    {
        CHECK(Handle());
        SendMessage( *this, EM_SETSEL, start, end );
    }
    void SetSelectedText( const wchar_t * text )
    {
        CHECK(Handle());
        SendMessage( *this, EM_REPLACESEL, 1, (LPARAM)text );
    }
    void SetLimitText( int maxChars )
    {
        CHECK(Handle());
        SendMessage( *this, EM_SETLIMITTEXT, maxChars, 0 );
    }
    bool GetModify()
    {
        return SendMessage( *this, EM_GETMODIFY, 0, 0 )!=0;
    }
    void SetModify( bool modified )
    {
        SendMessage( *this, EM_SETMODIFY, modified, 0 );
    }
    void ScrollCaret()
    {
        SendMessage( *this, EM_SCROLLCARET, 0, 0 );
    }
};


#endif // plEdit_h_inc