/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#ifndef AWT_TEXTAREA_H

#define AWT_TEXTAREA_H

#include "awt_TextComponent.h"

#include "java_awt_TextArea.h"

#include "sun_awt_windows_WTextAreaPeer.h"

#include <ole2.h>

#include <richedit.h>

#include <richole.h>

/************************************************************************

 * AwtTextArea class

 */

class AwtTextArea : public AwtTextComponent {

public:

    /* java.awt.TextArea fields ids */

    static jfieldID scrollbarVisibilityID;

    AwtTextArea();

    virtual ~AwtTextArea();

    virtual void Dispose();

    LPCTSTR GetClassName();

    static AwtTextArea* Create(jobject self, jobject parent);

    static size_t CountNewLines(JNIEnv *env, jstring jStr, size_t maxlen);

    static size_t GetALength(JNIEnv* env, jstring jStr, size_t maxlen);

    MsgRouting PreProcessMsg(MSG& msg);

    LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);

    static LRESULT CALLBACK EditProc(HWND hWnd, UINT message,

                                     WPARAM wParam, LPARAM lParam);

    MsgRouting WmEnable(BOOL fEnabled);

    MsgRouting WmContextMenu(HWND hCtrl, UINT xPos, UINT yPos);

    MsgRouting WmNotify(UINT notifyCode);

    MsgRouting WmNcHitTest(UINT x, UINT y, LRESULT &retVal);

    MsgRouting HandleEvent(MSG *msg, BOOL synthetic);

    INLINE void SetIgnoreEnChange(BOOL b) { m_bIgnoreEnChange = b; }

    virtual void SetColor(COLORREF c);

    virtual void SetBackgroundColor(COLORREF c);

    virtual void Enable(BOOL bEnable);

    virtual BOOL InheritsNativeMouseWheelBehavior();

    virtual void Reshape(int x, int y, int w, int h);

    virtual LONG getJavaSelPos(LONG orgPos);

    virtual LONG getWin32SelPos(LONG orgPos);

    virtual void SetSelRange(LONG start, LONG end);

    // called on Toolkit thread from JNI

    static void _ReplaceText(void *param);

protected:

    /*****************************************************************

     * Inner class OleCallback declaration.

     */

    class OleCallback : public IRichEditOleCallback {

    public:

        OleCallback();

        STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj);

        STDMETHODIMP_(ULONG) AddRef();

        STDMETHODIMP_(ULONG) Release();

        STDMETHODIMP GetNewStorage(LPSTORAGE FAR * ppstg);

        STDMETHODIMP GetInPlaceContext(LPOLEINPLACEFRAME FAR * ppipframe,

                                       LPOLEINPLACEUIWINDOW FAR* ppipuiDoc,

                                       LPOLEINPLACEFRAMEINFO pipfinfo);

        STDMETHODIMP ShowContainerUI(BOOL fShow);

        STDMETHODIMP QueryInsertObject(LPCLSID pclsid, LPSTORAGE pstg, LONG cp);

        STDMETHODIMP DeleteObject(LPOLEOBJECT poleobj);

        STDMETHODIMP QueryAcceptData(LPDATAOBJECT pdataobj, CLIPFORMAT *pcfFormat,

                                     DWORD reco, BOOL fReally, HGLOBAL hMetaPict);

        STDMETHODIMP ContextSensitiveHelp(BOOL fEnterMode);

        STDMETHODIMP GetClipboardData(CHARRANGE *pchrg, DWORD reco,

                                      LPDATAOBJECT *ppdataobj);

        STDMETHODIMP GetDragDropEffect(BOOL fDrag, DWORD grfKeyState,

                                       LPDWORD pdwEffect);

        STDMETHODIMP GetContextMenu(WORD seltype, LPOLEOBJECT poleobj,

                                    CHARRANGE FAR * pchrg, HMENU FAR * phmenu);

    private:

        ULONG             m_refs; // Reference count

    };//OleCallback class

    INLINE static OleCallback& GetOleCallback() { return sm_oleCallback; }

    void EditSetSel(CHARRANGE &cr);

    void EditGetSel(CHARRANGE &cr);

    LONG EditGetCharFromPos(POINT& pt);

  private:

    // RichEdit 1.0 control generates EN_CHANGE notifications not only

    // on text changes, but also on any character formatting change.

    // This flag is true when the latter case is detected.

    BOOL    m_bIgnoreEnChange;

    // RichEdit 1.0 control undoes a character formatting change

    // if it is the latest. We don't create our own undo buffer,

    // but just prohibit undo in case if the latest operation

    // is a formatting change.

    BOOL    m_bCanUndo;

    HWND    m_hEditCtrl;

    static WNDPROC sm_pDefWindowProc;

    LONG    m_lHDeltaAccum;

    LONG    m_lVDeltaAccum;

    static OleCallback sm_oleCallback;

};

#endif /* AWT_TEXTAREA_H */