uitreeview.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        A.H. Lammertink
 Date:          29/01/2002
________________________________________________________________________

-*/

#include "uibasemod.h"
#include "uiobj.h"
#include "bufstringset.h"
#include "keyenum.h"
#include "draw.h"
#include "uistring.h"

mFDQtclass(QTreeWidget)
mFDQtclass(QTreeWidgetItem)
mFDQtclass(QString)
mFDQtclass(QStringList)

class uiPixmap;
class uiTreeViewBody;
class uiTreeViewItem;

mExpClass(uiBase) uiTreeView : public uiObject
{ mODTextTranslationClass(uiTreeView);
public:
                        uiTreeView(uiParent* parnt,
                                   const char* nm="uiTreeView",
                                   int preferredNrLines=0,
                                   bool rootdecorated=true);
    virtual             ~uiTreeView();

    void                setEmpty();
    void                setNrLines(int);

    bool                rootDecorated() const;
    void                setRootDecorated(bool yn);
    void                showHeader(bool yn); // default is true

    void                addColumns(const uiStringSet&);
    void                addColumns(const BufferStringSet&);
    void                setNrColumns(int); // when columns have no name
    int                 nrColumns() const;

    void                removeColumn(int index);
    void                setColumnText(int column,const uiString& label);
    uiString            getColumnText(int column) const;
    void                setColumnWidth(int column,int width);
    void                setFixedColumnWidth(int column,int width);
    int                 columnWidth(int column) const;

    enum                WidthMode { Manual, Fixed, Stretch, ResizeToContents,
                                    Custom };
    void                setColumnWidthMode(WidthMode);
    void                setColumnWidthMode(int column,WidthMode);
    WidthMode           columnWidthMode(int column) const;

    void                setColumnAlignment(OD::Alignment::HPos);
    void                setColumnAlignment(int,OD::Alignment::HPos);
    OD::Alignment::HPos columnAlignment(int) const;

    enum                ScrollMode { Auto, AlwaysOff, AlwaysOn };
    void                setHScrollBarMode(ScrollMode);
    void                setVScrollBarMode(ScrollMode);

    enum                SelectionMode
                        { NoSelection=0, Single, Multi, Extended, Contiguous };
    enum                SelectionBehavior
                        { SelectItems, SelectRows, SelectColumns };
    void                setSelectionMode(SelectionMode);
    SelectionMode       selectionMode() const;
    void                setSelectionBehavior(SelectionBehavior);
    SelectionBehavior   selectionBehavior() const;

    void                clearSelection();
    void                setSelected(uiTreeViewItem*,bool);
    bool                isSelected(const uiTreeViewItem*) const;
    uiTreeViewItem*     selectedItem() const;
    const char*         text(int col=0) const;
    int                 nrSelected() const;
    void                getSelectedItems(ObjectSet<uiTreeViewItem>&) const;
    void                removeSelectedItems();

    int                 nrItems() const;
    void                setCurrentItem(uiTreeViewItem*,int column=0);
    uiTreeViewItem*     currentItem() const;
    int                 currentColumn() const;
    int                 indexOfItem(uiTreeViewItem*) const;
    uiTreeViewItem*     getItem(int) const;
    uiTreeViewItem*     firstItem() const;
    uiTreeViewItem*     lastItem() const;
    uiTreeViewItem*     findItem(const char*,int,bool) const;

    void                setItemMargin(int);
    int                 itemMargin() const;

    void                setShowToolTips(bool);
    bool                showToolTips() const;

    void                clear();
    void                selectAll();
    void                checkAll();
    void                uncheckAll();

    void                expandAll();
    void                collapseAll();
    void                expandTo(int treedepth);
    void                ensureItemVisible(const uiTreeViewItem*);

                        // For MOVING an item to another point in the tree
    void                takeItem(uiTreeViewItem*);
    void                insertItem(int,uiTreeViewItem*);

    uiParent*           parent()                { return parent_; }
    bool                handleLongTabletPress();

    void                triggerUpdate();

    uiTreeViewItem*     itemNotified()          { return lastitemnotified_; }
    int                 columnNotified()        { return column_; }
    void                unNotify()              { lastitemnotified_ = 0; }

    void                setNotifiedItem(mQtclass(QTreeWidgetItem*));
    void                setNotifiedColumn(int col)      { column_ = col; }

    Notifier<uiTreeView> selectionChanged;
    Notifier<uiTreeView> currentChanged;
    Notifier<uiTreeView> itemChanged;
    Notifier<uiTreeView> itemRenamed;
    Notifier<uiTreeView> returnPressed;
    Notifier<uiTreeView> rightButtonClicked;
    Notifier<uiTreeView> rightButtonPressed;
    Notifier<uiTreeView> leftButtonClicked;
    Notifier<uiTreeView> leftButtonPressed;
    Notifier<uiTreeView> mouseButtonPressed;
    Notifier<uiTreeView> mouseButtonClicked;
    Notifier<uiTreeView> contextMenuRequested;
    Notifier<uiTreeView> doubleClicked;
    Notifier<uiTreeView> expanded;
    Notifier<uiTreeView> collapsed;
    Notifier<uiTreeView> unusedKey;

protected:

    mutable BufferString rettxt;
    uiTreeViewItem*     lastitemnotified_;
    uiParent*           parent_;
    int                 column_;
    OD::ButtonState     buttonstate_;

    void                cursorSelectionChanged(CallBacker*);
    void                itemChangedCB(CallBacker*);
    void                updateCheckStatus(uiTreeViewItem*);

    uiTreeViewBody*             lvbody()        { return body_; }
    const uiTreeViewBody*       lvbody() const  { return body_; }

    void                updateHeaderLabels();
    void                translateText();

private:


    friend class        i_treeVwMessenger;
    friend class        uiTreeViewBody;
    friend class        uiTreeViewItem;

    uiTreeViewBody*     body_;

    uiStringSet         labels_;

                        // 0: use nr itms in tree
    uiTreeViewBody&     mkbody(uiParent*,const char*,int);

public:

    const char*         columnText(int column) const;
                        //Commandline driver usage only

};


mExpClass(uiBase) uiTreeViewItem : public CallBacker
{ mODTextTranslationClass(uiTreeViewItem);
public:
    friend class        uiTreeView;

    enum                        Type { Standard, CheckBox };

    mExpClass(uiBase) Setup
    { mODTextTranslationClass(Setup);
    public:
                        Setup( const uiString& txt=uiString::emptyString(),
                                       uiTreeViewItem::Type tp=
                                                uiTreeViewItem::Standard,
                                       bool setchecked=true )
                                : type_(tp)
                                , after_(0)
                                , setcheck_(setchecked)
                                { label( txt ); }

        mDefSetupMemb(uiTreeViewItem::Type,type)
        mDefSetupMemb(uiTreeViewItem*,after)
        mDefSetupMemb(BufferString,iconname)
        mDefSetupMemb(bool,setcheck)
        uiStringSet             labels_;

        Setup&                  label( const uiString& txt )
                                {
                                    if ( !txt.isEmpty() )
                                        labels_ += txt;
                                    return *this;
                                }
    };

                        uiTreeViewItem(uiTreeViewItem* parent,const Setup&);
                        uiTreeViewItem(uiTreeView* parent,const Setup&);
    virtual             ~uiTreeViewItem();

    mQtclass(QTreeWidgetItem*)  qItem()                 { return qtreeitem_; }
    const mQtclass(QTreeWidgetItem*) qItem() const      { return qtreeitem_; }

    int                 nrChildren() const;

    void                setBGColor(int column,const Color&);

    void                edit(int col);

    void                setCheckable(bool);
    bool                isCheckable() const;
    bool                isChecked(bool qtstatus=true) const;
    void                setChecked(bool,bool trigger=false);
    void                checkAll(bool yn,bool trigger=false);

    void                setToolTip(int column,const uiString&);

    void                translateText();

    static void         updateToolTips();

    void                insertItem(int,uiTreeViewItem*);
    void                takeItem(uiTreeViewItem*);
    void                removeItem(uiTreeViewItem*);
    void                moveItem(uiTreeViewItem* after);
    int                 siblingIndex() const;
    void                setText( const uiString&,
                                 int column=0 );
    void                setText( int i, int column=0 )
                        { setText( toUiString(i), column ); }
    void                setText( float f, int column=0 )
                        { setText( toUiString(f), column ); }
    void                setText( double d, int column=0 )
                        { setText( toUiString(d), column ); }

    const char*         text(int column=0) const;

    void                setIcon(int column,const char* iconname);
    void                setPixmap(int column,const uiPixmap&);
    void                setPixmap(int column,const Color&,
                                  int width=16,int height=10);

    virtual const char* key(int,bool) const             { return 0; }
    virtual int         compare( uiTreeViewItem*,int column,bool) const
                                                        { return mUdf(int); }

    void                setOpen(bool yn=true);
    bool                isOpen() const;

    void                setSelected(bool yn);
    bool                isSelected() const;

    uiTreeViewItem*     getChild(int) const;
    uiTreeViewItem*     firstChild() const;
    uiTreeViewItem*     lastChild() const;
    uiTreeViewItem*     nextSibling() const;
    uiTreeViewItem*     prevSibling() const;
    uiTreeViewItem*     parent() const;

    uiTreeViewItem*     itemAbove();
    uiTreeViewItem*     itemBelow();

    uiTreeView*         treeView() const;

    void                setSelectable(bool yn);
    bool                isSelectable() const;

    void                setDragEnabled(bool);
    void                setDropEnabled(bool);
    bool                dragEnabled() const;
    bool                dropEnabled() const;

    void                setVisible(bool yn);
    bool                isVisible() const;

    void                setRenameEnabled(int column,bool);
    bool                renameEnabled(int column) const;

    void                setEnabled(bool);
    bool                isEnabled() const;


    Notifier<uiTreeViewItem> stateChanged; 
    Notifier<uiTreeViewItem> keyPressed;

    static mQtclass(QTreeWidgetItem*)    qitemFor(uiTreeViewItem*);
    static const mQtclass(QTreeWidgetItem*)  qitemFor(const uiTreeViewItem*);

    static uiTreeViewItem*       itemFor(mQtclass(QTreeWidgetItem*));
    static const uiTreeViewItem* itemFor(const mQtclass(QTreeWidgetItem*));

protected:

    mQtclass(QTreeWidgetItem*)  qtreeitem_;

    void                        init(const Setup&);
    void                        updateFlags();
    bool                        updateToolTip(int column);

    uiStringSet                 texts_;
    uiStringSet                 tooltips_;

    bool                        isselectable_;
    bool                        iseditable_;
    bool                        isdragenabled_;
    bool                        isdropenabled_;
    bool                        ischeckable_;
    bool                        isenabled_;
    bool                        checked_;
};