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/***************************************************************************
                             register.h
                             ----------
    begin                : Fri Mar 10 2006
    copyright            : (C) 2006 by Thomas Baumgart
    email                : Thomas Baumgart <ipwizard@users.sourceforge.net>
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef REGISTER_H
#define REGISTER_H

// Some STL headers in GCC4.3 contain operator new. Memory checker mangles these
#ifdef _CHECK_MEMORY
  #undef new
#endif

#include <algorithm>

// ----------------------------------------------------------------------------
// TQt Includes

#include <tqtable.h>
#include <tqvaluelist.h>
#include <tqvaluevector.h>
#include <tqwidgetlist.h>
#include <tqmap.h>
#include <tqpair.h>
#include <tqevent.h>

// ----------------------------------------------------------------------------
// TDE Includes

// ----------------------------------------------------------------------------
// Project Includes
#ifdef _CHECK_MEMORY
  #include <kmymoney/mymoneyutils.h>
#endif

#include <kmymoney/mymoneyaccount.h>
#include <kmymoney/registeritem.h>
#include <kmymoney/transaction.h>
#include <kmymoney/transactioneditorcontainer.h>
#include <kmymoney/selectedtransaction.h>
#include <kmymoney/transactionsortoption.h>

class RegisterToolTip;

namespace KMyMoneyRegister {

typedef enum {
  UnknownSort = 0,      //< unknown sort criteria
  PostDateSort = 1,     //< sort by post date
  EntryDateSort,        //< sort by entry date
  PayeeSort,            //< sort by payee name
  ValueSort,            //< sort by value
  NoSort,               //< sort by number field
  EntryOrderSort,       //< sort by entry order
  TypeSort,             //< sort by CashFlowDirection
  CategorySort,         //< sort by Category
  ReconcileStateSort,   //< sort by reconciliation state
  SecuritySort,         //< sort by security (only useful for investment accounts)
  // insert new values in front of this line
  MaxSortFields
} TransactionSortField;

typedef enum {
  Ascending = 0,        //< sort in ascending order
  Descending            //< sort in descending order
} SortDirection;

class Register;
class RegisterItem;
class ItemPtrVector;

const TQString sortOrderToText(TransactionSortField idx);
TransactionSortField textToSortOrder(const TQString& text);


class TQWidgetContainer : public TQMap<TQString, TQWidget*>
{
public:
  TQWidgetContainer() {}

  TQWidget* haveWidget(const TQString& name) const {
    TQWidgetContainer::const_iterator it_w;
    it_w = find(name);
    if(it_w != end())
      return *it_w;
    return 0;
  }

  void removeOrphans(void) {
    TQWidgetContainer::iterator it_w;
    for(it_w = begin(); it_w != end(); ) {
      if((*it_w) && (*it_w)->parent())
        ++it_w;
      else {
        delete (*it_w);
        remove(it_w);
        it_w = begin();
      }
    }
  }

};

class GroupMarker : public RegisterItem
{
public:
  GroupMarker(Register* parent, const TQString& txt = TQString());
  ~GroupMarker();
  void setText(const TQString& txt) { m_txt = txt; }
  const TQString& text(void) const { return m_txt; }
  bool isSelectable(void) const { return false; }
  bool canHaveFocus(void) const { return false; }
  int numRows(void) const { return 1; }

  virtual const char* className(void) { return "GroupMarker"; }

  bool isErronous(void) const { return false; }

  void paintRegisterCell(TQPainter* painter, int row, int col, const TQRect& r, bool selected, const TQColorGroup& cg);
  void paintFormCell(TQPainter* /* painter */, int /* row */, int /* col */, const TQRect& /* r */, bool /* selected */, const TQColorGroup& /* cg */) {}

  int rowHeightHint(void) const;

  bool matches(const TQString&) const { return true; }
  virtual int sortSamePostDate(void) const { return 0; }

protected:
  void setupColors(TQColorGroup& cg);

protected:
  TQString                  m_txt;
  unsigned int             m_drawCounter;
  bool                     m_showDate;

  static TQPixmap*          m_bg;
  static int               m_bgRefCnt;
};


class FancyDateGroupMarker : public GroupMarker
{
public:
  FancyDateGroupMarker(Register* parent, const TQDate& date, const TQString& txt);

  virtual const TQDate& sortPostDate(void) const { return m_date; }
  virtual const TQDate& sortEntryDate(void) const { return m_date; }
  virtual const char* className(void) { return "FancyDateGroupMarker"; }
private:
  TQDate                    m_date;
};

class StatementGroupMarker : public FancyDateGroupMarker
{
public:
  StatementGroupMarker(Register* parent, CashFlowDirection dir, const TQDate& date, const TQString& txt );
  CashFlowDirection sortType(void) const { return m_dir; }
  virtual int sortSamePostDate(void) const { return 3; }
private:
  CashFlowDirection        m_dir;
};

class SimpleDateGroupMarker : public FancyDateGroupMarker
{
public:
  SimpleDateGroupMarker(Register* parent, const TQDate& date, const TQString& txt);
  void paintRegisterCell(TQPainter* painter, int row, int col, const TQRect& r, bool selected, const TQColorGroup& cg);
  int rowHeightHint(void) const;
  virtual const char* className(void) { return "SimpleDateGroupMarker"; }
};

class TypeGroupMarker : public GroupMarker
{
public:
  TypeGroupMarker(Register* parent, CashFlowDirection dir, MyMoneyAccount::accountTypeE accType);
  CashFlowDirection sortType(void) const { return m_dir; }
private:
  CashFlowDirection        m_dir;
};

class FiscalYearGroupMarker : public FancyDateGroupMarker
{
public:
  FiscalYearGroupMarker(Register* parent, const TQDate& date, const TQString& txt);
  virtual const char* className(void) { return "FiscalYearGroupMarker"; }
  virtual int sortSamePostDate(void) const { return 1; }

protected:
  void setupColors(TQColorGroup& cg);
};

class PayeeGroupMarker : public GroupMarker
{
public:
  PayeeGroupMarker(Register* parent, const TQString& name);
  const TQString& sortPayee(void) const { return m_txt; }
};

class CategoryGroupMarker : public GroupMarker
{
public:
  CategoryGroupMarker(Register* parent, const TQString& category);
  const TQString& sortCategory(void) const { return m_txt; }
  const TQString& sortSecurity(void) const { return m_txt; }

  virtual const char* className(void) { return "CategoryGroupMarker"; }
};

class ReconcileGroupMarker : public GroupMarker
{
public:
  ReconcileGroupMarker(Register* parent, MyMoneySplit::reconcileFlagE state);
  virtual MyMoneySplit::reconcileFlagE sortReconcileState(void) const { return m_state; }
private:
  MyMoneySplit::reconcileFlagE  m_state;
};


class ItemPtrVector : public TQValueVector<RegisterItem *>
{
public:
  ItemPtrVector() {}

  void sort(void);

protected:
  /**
    * sorter's compare routine. Returns true if i1 < i2
    */
  static bool item_cmp(RegisterItem* i1, RegisterItem* i2);
};


class Register : public TransactionEditorContainer
{
  TQ_OBJECT
  

  // friend class TQHeader;
  // friend class TQTableHeader;
  // friend class RegisterItem;
  friend class Transaction;
  friend class StdTransaction;
  friend class InvestTransaction;

public:
  Register(TQWidget *parent = 0, const char *name = 0);
  virtual ~Register();

  /**
    * add the item @a p to the register
    */
  void addItem(RegisterItem* p);

  /**
    * insert the item @a p into the register after item @a q
    */
  void insertItemAfter(RegisterItem* p, RegisterItem* q);

  /**
    * remove the item @p from the register
    */
  void removeItem(RegisterItem* p);

  /**
    * This method returns a list of pointers to all selected items
    * in the register
    *
    * @retval TQValueList<RegisterItem*>
    */
  TQValueList<RegisterItem*> selectedItems(void) const;

  /**
    * Construct a list of all currently selected transactions in the register.
    * If the current item carrying the focus (see focusItem() ) is selected
    * it will be the first one contained in the list.
    *
    * @param list reference to TQValueList receiving the SelectedTransaction()'s
    */
  void selectedTransactions(SelectedTransactions&  list) const;

  TQString text(int row, int col) const;
  TQWidget* createEditor(int row, int col, bool initFromCell) const;
  void setCellContentFromEditor(int row, int col);
  TQWidget* cellWidget(int row, int col) const;
  void endEdit(int row, int col, bool accept, bool replace);
  void paintCell(TQPainter* painter, int row, int col, const TQRect& r, bool selected, const TQColorGroup& cg);

  void resizeData(int) {}
  TQTableItem* item(int, int) { return 0; }
  void setItem(int, int, TQTableItem*) {}
  void clearCell(int, int) {}
  void clearCellWidget(int, int);

  /**
    * Override the TQTable member function to avoid display of focus
    */
  void paintFocus(TQPainter*, const TQRect& ) {}

  /**
    * Override the TQTable member function to avoid functionality
    */
  void updateCell(int /* row */, int /* col */) {}

  RegisterItem* focusItem(void) const { return m_focusItem; }
  RegisterItem* anchorItem(void) const { return m_selectAnchor; }

  /**
    * set focus to specific item.
    * @return true if the item got focus
    */
  bool setFocusItem(RegisterItem* focusItem);

  void setAnchorItem(RegisterItem* anchorItem);

  /**
    * Set focus to the first focussable item
    * @return true if a focussable item was found
    */
  bool setFocusToTop(void);

  /**
    * Select @a item and unselect all others if @a dontChangeSelections
    * is @a false. If m_buttonState differs from TQt::NoButton (method is
    * called as a result of a mouse button press), then the setting of
    * @a dontChangeSelections has no effect.
    */
  void selectItem(RegisterItem* item, bool dontChangeSelections = false);

  /**
    * Clears all items in the register. All objects
    * added to the register will be deleted.
    */
  void clear(void);

  void updateRegister(bool forceUpdateRowHeight = false);

  /**
    * Assign all visible items an alternate background color
    */
  void updateAlternate(void) const;

  /**
    * make sure, we only show a single marker in a row
    * through hiding unused ones
    */
  void suppressAdjacentMarkers(void);

  /**
    * Adjusts column @a col so that all data fits in width.
    */
  void adjustColumn(int col);

  /**
    * Convenience method to setup the register to show the columns
    * based on the account type of @a account. If @a showAccountColumn
    * is @a true then the account column is shown independant of the
    * account type. If @a account does not have an @a id, all columns
    * will be hidden.
    */
  void setupRegister(const MyMoneyAccount& account, bool showAccountColumn = false);

  /**
    * Show the columns contained in @a cols for @a account. @a account
    * can be left empty ( MyMoneyAccount() ) e.g. for the search dialog.
    */
  void setupRegister(const MyMoneyAccount& account, const TQValueList<Column>& cols);

  void setSortOrder(const TQString& order);
  const TQValueList<TransactionSortField>& sortOrder(void) const { return m_sortOrder; }
  TransactionSortField primarySortKey(void) const;
  void sortItems(void);

  /**
    * This member returns the last visible column that is used by the register
    * after it has been setup using setupRegister().
    *
    * @return last actively used column (base 0)
    */
  Column lastCol(void) const { return m_lastCol; }

  RegisterItem* firstItem(void) const;
  RegisterItem* firstVisibleItem(void) const;
  RegisterItem* nextItem(RegisterItem*) const;
  RegisterItem* lastItem(void) const;
  RegisterItem* lastVisibleItem(void) const;
  RegisterItem* prevItem(RegisterItem*) const;
  RegisterItem* itemAtRow(int row) const;

  void resize(int col);

  void forceUpdateLists(void) { m_listsDirty = true; }

  void ensureItemVisible(RegisterItem* item);

  void arrangeEditWidgets(TQMap<TQString, TQWidget*>& editWidgets, Transaction* t);
  void removeEditWidgets(TQMap<TQString, TQWidget*>& editWidgets);
  void tabOrder(TQWidgetList& tabOrderWidgets, KMyMoneyRegister::Transaction* t) const;

  int rowHeightHint(void) const;

  void clearSelection(void);

  bool markErronousTransactions(void) const { return (m_markErronousTransactions & 0x01) != 0; }

  /**
    * This method creates a specifc transaction according to the
    * transaction passed in @a transaction.
    *
    * @param parent pointer to register where the created object should be added
    * @param transaction the transaction which should be used to create the object
    * @param split the split of the transaction which should be used to create the object
    * @param uniqueId an int that will be used to construct the id of the item
    *
    * @return pointer to created object (0 upon failure)
    */
  static Transaction* transactionFactory(Register *parent, const MyMoneyTransaction& transaction, const MyMoneySplit& split, int uniqueId);

  const MyMoneyAccount& account(void) const { return m_account; }

  void repaintItems(RegisterItem* first = 0, RegisterItem* last = 0);

  unsigned int drawCounter(void) const { return m_drawCounter; }

  /**
    * This method creates group marker items and adds them to the register
    */
  void addGroupMarkers(void);

  /**
    * This method removes all trailing group markers and in a second
    * run reduces all adjacent group markers to show only one. In that
    * case the last one will remain.
    */
  void removeUnwantedGroupMarkers(void);

  void setLedgerLensForced(bool forced=true) { m_ledgerLensForced = forced; }

  /**
    * Sets the selection mode to @a mode. Supported modes are TQTable::Single and
    * TQTable::Multi. TQTable::Multi is the default when the object is created.
    */
  void setSelectionMode(SelectionMode mode) { m_selectionMode = mode; }

protected:

  void drawContents(TQPainter *p, int cx, int cy, int cw, int ch);

  void contentsMouseReleaseEvent( TQMouseEvent *e );

  void unselectItems(int from = -1, int to = -1) { doSelectItems(from, to, false); }
  void selectItems(int from, int to) { doSelectItems(from, to, true); }
  void doSelectItems(int from, int to, bool selected);
  int selectedItemsCount(void) const;

  void focusOutEvent(TQFocusEvent*);
  void focusInEvent(TQFocusEvent*);
  void keyPressEvent(TQKeyEvent*);

  int rowToIndex(int row) const;
  void setupItemIndex(int rowCount);

  /**
    * This method determines the register item that is one page
    * further down or up in the ledger from the previous focus item.
    * The height to scroll is determined by visibleHeight()
    *
    * @param key TQt::Page_Up or TQt::Page_Down depending on the direction to scroll
    * @param state state of TQt::ShiftButton, TQt::ControlButton, TQt::AltButton and
    *              TQt::MetaButton.
    */
  void scrollPage(int key, ButtonState state);

  /**
    * This method determines the pointer to a RegisterItem
    * based on the item's @a id. If @a id is empty, this method
    * returns @a m_lastItem.
    *
    * @param id id of the item to be searched
    * @return pointer to RegisterItem or 0 if not found
    */
  RegisterItem* itemById(const TQString& id) const;

  void insertWidget(int row, int col, TQWidget* w);

  /**
    * Override logic and use standard TQFrame behaviour
    */
  bool focusNextPrevChild(bool next);

  bool eventFilter(TQObject* o, TQEvent* e);

  void handleItemChange(RegisterItem* old, bool shift, bool control);

  void selectRange(RegisterItem* from, RegisterItem* to, bool invert, bool includeFirst, bool clearSel);

  // DND
  void dragMoveEvent(TQDragMoveEvent* event);
  void dropEvent(TQDropEvent* event);
  Transaction* dropTransaction(TQPoint cPos) const;

protected slots:
  void resize(void);

  void selectItem(int row, int col, int button, const TQPoint & mousePos );
  void slotEnsureItemVisible(void);
  void slotDoubleClicked(int, int, int, const TQPoint&);

  void slotToggleErronousTransactions(void);
  void slotAutoColumnSizing(int section);

signals:
  void selectionChanged(void);
  void selectionChanged(const KMyMoneyRegister::SelectedTransactions& list);
  /**
    * This signal is emitted when the focus and selection changes to @p item.
    *
    * @param item pointer to transaction that received the focus and was selected
    */
  void focusChanged(KMyMoneyRegister::Transaction* item);

  /**
    * This signal is emitted when the focus changes but the selection remains
    * the same. This usually happens when the focus is changed using the keyboard.
    */
  void focusChanged(void);

  /**
   * This signal is emitted when an @p item is about to be selected. The boolean
   * @p okToSelect is preset to @c true. If the @p item should not be selected
   * for whatever reason, the boolean @p okToSelect should be reset to @c false
   * by the connected slot.
   */
  void aboutToSelectItem(KMyMoneyRegister::RegisterItem* item, bool& okToSelect);

  void editTransaction(void);
  void headerClicked(void);

  /**
    * This signal is sent out when the user clicks on the ReconcileStateColumn and
    * only a single transaction is selected.
    */
  void reconcileStateColumnClicked(KMyMoneyRegister::Transaction* item);

  /**
    * This signal is sent out, if an item without a transaction id has been selected.
    */
  void emptyItemSelected(void);

  /**
    * This signal is sent out, if the user selects an item with the right mouse button
    */
  void openContextMenu(void);

  /**
    * This signal is sent out when a new item has been added to the register
    */
  void itemAdded(RegisterItem* item);

protected:
  ItemPtrVector                m_items;
  TQValueVector<RegisterItem*>  m_itemIndex;
  RegisterItem*                m_selectAnchor;
  RegisterItem*                m_focusItem;
  RegisterItem*                m_ensureVisibleItem;
  RegisterItem*                m_firstItem;
  RegisterItem*                m_lastItem;
  RegisterItem*                m_firstErronous;
  RegisterItem*                m_lastErronous;

  int                          m_markErronousTransactions;
  int                          m_rowHeightHint;

  MyMoneyAccount               m_account;

  bool                         m_ledgerLensForced;
  SelectionMode                m_selectionMode;

private:
  bool                         m_listsDirty;
  bool                         m_ignoreNextButtonRelease;
  bool                         m_needInitialColumnResize;
  TQt::ButtonState              m_buttonState;
  Column                       m_lastCol;
  TQValueList<TransactionSortField> m_sortOrder;
  TQMap<TQPair<int, int>, TQWidget*> m_cellWidgets;
  RegisterToolTip*             m_tooltip;
  TQRect                        m_lastRepaintRect;
  unsigned int                 m_drawCounter;
};

} // namespace

#endif