uitextedit.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        A.H. Lammertink
 Date:          09/02/2001
________________________________________________________________________

-*/

#include "uibasemod.h"
#include "uiobj.h"
#include "undefval.h"

class uiTextEditBody;
class uiTextBrowserBody;
mFDQtclass(QTextEdit)
class i_ScrollBarMessenger;
namespace File { class Monitor; }

mExpClass(uiBase) uiTextEditBase : public uiObject
{
public:
    void                readFromFile(const char*,int linecutlen=0);
    bool                saveToFile(const char*,int linelen=0,bool newlns=true);

    const char*         text() const;
    int                 nrLines() const;
    bool                verticalSliderIsDown() const;

    int                 defaultWidth()            { return defaultwidth_; }
    void                setDefaultWidth( int w )  { defaultwidth_ = w; }

    int                 defaultHeight()           { return defaultheight_; }
    void                setDefaultHeight( int h ) { defaultheight_ = h; }

    bool                isModified() const;
    void                allowTextSelection(bool);

    void                hideFrame();
    void                hideScrollBar(bool vertical);
    void                scrollToBottom();

    Notifier<uiTextEditBase>    textChanged;
    Notifier<uiTextEditBase>    sliderPressed;
    Notifier<uiTextEditBase>    sliderReleased;
    CNotifier<uiTextEditBase,bool>      copyAvailable;

protected:
                        uiTextEditBase(uiParent*,const char*,uiObjectBody&);

    mutable BufferString result_;

private:

    virtual mQtclass(QTextEdit&) qte()          = 0;
    const mQtclass(QTextEdit&)   qte() const
                        { return const_cast<uiTextEditBase*>(this)->qte(); }

    virtual int         maxLines() const        { return -1; }

    int                 defaultwidth_;
    int                 defaultheight_;

    friend class        i_ScrollBarMessenger;
};



mExpClass(uiBase) uiTextEdit : public uiTextEditBase
{
public:
                        uiTextEdit(uiParent* parnt,const char* nm="Text editor",
                                   bool readonly=false);

    void                setText(const char* txt) { setText( txt, false ); }
    void                setText(const OD::String& txt);
    void                setText(const uiString&);
    void                setText(const char*,bool trigger_notif);
    void                append(const char*);

private:

    virtual mQtclass(QTextEdit&)        qte();

    uiTextEditBody*     body_;
    uiTextEditBody&     mkbody(uiParent*,const char*,bool);
};



mExpClass(uiBase) uiTextBrowser : public uiTextEditBase
{ mODTextTranslationClass(uiTextBrowser)
friend class            i_BrowserMessenger;
public:

                        uiTextBrowser(uiParent*,const char* nm="File browser",
                                      int maxlns=mUdf(int),
                                      bool forceplaintext=true,
                                      bool logmode=false);
                        ~uiTextBrowser();

    void                setText(const char*);
    void                setHtmlText(const char*);
    void                getHtmlText(BufferString&) const;
    const char*         source() const;
    void                setSource(const char*);
    void                setMaxLines(int);

    enum                LinkBehavior { None, FollowLocal, FollowAll };
    void                setLinkBehavior( LinkBehavior );

    void                backward();
    void                forward();
    void                home();
    void                reload();
    void                showToolTip(const char*);
    void                recordScrollPos();
    void                restoreScrollPos();

    bool                canGoForward()          { return cangoforw_; }
    bool                canGoBackward()         { return cangobackw_; }
    const char*         lastLink()              { return lastlink_; }

    Notifier<uiTextBrowser>     goneForwardOrBack;
    Notifier<uiTextBrowser>     linkHighlighted;
    Notifier<uiTextBrowser>     linkClicked;
    Notifier<uiTextBrowser>     fileReOpened;

private:

    BufferString        textsrc_;
    BufferString        lastlink_;
    bool                cangoforw_;
    bool                cangobackw_;
    bool                forceplaintxt_;
    int                 maxlines_;

    virtual int         maxLines() const        { return maxlines_; }

    void                fileChgCB(CallBacker*);
    void                sliderPressedCB(CallBacker*);
    void                sliderReleasedCB(CallBacker*);
    void                copyAvailableCB(CallBacker*);
    void                enableTailRead(bool yn);

    File::Monitor*      filemon_;
    bool                logviewmode_;
    od_int64            lastlinestartpos_;
    BufferString        lastline_;

    virtual mQtclass(QTextEdit&) qte();

    uiTextBrowserBody*  body_;
    uiTextBrowserBody&  mkbody(uiParent*,const char*,bool);
};