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641 lines
25 KiB
641 lines
25 KiB
/* This file is part of the KDE project
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Copyright (C) 2002 Till Busch <till@bux.at>
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Copyright (C) 2003 Lucijan Busch <lucijan@gmx.at>
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Copyright (C) 2003 Daniel Molkentin <molkentin@kde.org>
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Copyright (C) 2003 Joseph Wenninger <jowenn@kde.org>
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Copyright (C) 2003-2006 Jaroslaw Staniek <js@iidea.pl>
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This program is free software; you can redistribute it and,or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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Original Author: Till Busch <till@bux.at>
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Original Project: buX (www.bux.at)
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*/
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#ifndef KEXITABLEVIEW_H
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#define KEXITABLEVIEW_H
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#include <tqscrollview.h>
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#include <tqvariant.h>
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#include <tqptrlist.h>
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#include <tqheader.h>
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#include <tqtooltip.h>
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#include <kdebug.h>
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#include "kexitableviewdata.h"
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#include "kexitableedit.h"
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#include <kexiutils/tristate.h>
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#include <widget/utils/kexirecordnavigator.h>
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#include <widget/utils/kexisharedactionclient.h>
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#include "kexidataawareobjectiface.h"
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class KPopupMenu;
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class KPrinter;
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class KAction;
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class KexiTableHeader;
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class KexiTableItem;
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class KexiTableView;
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class KexiTableEdit;
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class KexiTableViewPrivate;
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class KActionCollection;
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namespace KexiDB {
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class RowEditBuffer;
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}
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//! minimum column width in pixels
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#define KEXITV_MINIMUM_COLUMN_WIDTH 10
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//! @short KexiTableView class provides a widget for displaying data in a tabular view.
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/*! @see KexiFormScrollView
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*/
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class KEXIDATATABLE_EXPORT KexiTableView :
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public TQScrollView,
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public KexiRecordNavigatorHandler,
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public KexiSharedActionClient,
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public KexiDataAwareObjectInterface
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{
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Q_OBJECT
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KEXI_DATAAWAREOBJECTINTERFACE
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public:
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/*! Defines table view's detailed appearance settings. */
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class KEXIDATATABLE_EXPORT Appearance {
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public:
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Appearance(TQWidget *widget = 0);
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/*! base color for cells, default is "Base" color for application's
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current active palette */
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TQColor baseColor;
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/*! text color for cells, default is "Text" color for application's
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current active palette */
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TQColor textColor;
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/*! border color for cells, default is TQColor(200,200,200) */
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TQColor borderColor;
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/*! empty area color, default is "Base" color for application's
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current active palette */
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TQColor emptyAreaColor;
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/*! alternate background color, default is TDEGlobalSettings::alternateBackgroundColor() */
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TQColor alternateBackgroundColor;
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/*! true if background altering should be enabled, true by default */
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bool backgroundAltering : 1;
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/*! true if full-row-selection mode is set,
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what means that all cells of the current row are always selected, instead of single cell.
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This mode is usable for read-only table views, when we're interested only in navigating
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by rows. False by default, even for read-only table views.
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*/
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bool fullRowSelection : 1;
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/*! true if fullgrid is enabled. True by default.
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It is set to false for comboboxpopup table, to mimic original
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combobox look and feel. */
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bool gridEnabled : 1;
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/*! \if the navigation panel is enabled (visible) for the view.
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True by default. */
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bool navigatorEnabled : 1;
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/*! true if "row highlight" behaviour is enabled. False by default. */
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bool rowHighlightingEnabled : 1;
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/*! true if "row highlight over " behaviour is enabled. False by default. */
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bool rowMouseOverHighlightingEnabled : 1;
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/*! true if selection of a row should be kept when a user moved mouse
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pointer over other rows. Makes only sense when rowMouseOverHighlightingEnabled is true.
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True by default. It is set to false for comboboxpopup table, to mimic original
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combobox look and feel. */
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bool persistentSelections : 1;
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/*! color for row highlight, default is intermediate (33%/60%) between
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active highlight and base color. */
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TQColor rowHighlightingColor;
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/*! color for text under row highlight, default is the same as textColor.
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Used when rowHighlightingEnabled is true; */
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TQColor rowHighlightingTextColor;
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/*! color for row highlight for mouseover, default is intermediate (20%/80%) between
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active highlight and base color. Used when rowMouseOverHighlightingEnabled is true. */
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TQColor rowMouseOverHighlightingColor;
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/*! color for text under row highlight for mouseover, default is the same as textColor.
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Used when rowMouseOverHighlightingEnabled is true; */
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TQColor rowMouseOverHighlightingTextColor;
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/*! Like rowMouseOverHighlightingColor but for areas painted with alternate color.
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This is computed using active highlight color and alternateBackgroundColor. */
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TQColor rowMouseOverAlternateHighlightingColor;
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};
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KexiTableView(KexiTableViewData* data=0, TQWidget* parent=0, const char* name=0);
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virtual ~KexiTableView();
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/*! \return current appearance settings */
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const Appearance& appearance() const;
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/*! Sets appearance settings. Table view is updated automatically. */
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void setAppearance(const Appearance& a);
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/*! \return string displayed for column's header \a colNum */
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TQString columnCaption(int colNum) const;
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/*! Convenience function.
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\return field object that define column \a colNum or NULL if there is no such column */
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KexiDB::Field* field(int colNum) const;
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/*! Reimplementation for KexiDataAwareObjectInterface */
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virtual void setSpreadSheetMode();
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/*! \return true if vertical scrollbar's tooltips are enabled (true by default). */
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//moved bool scrollbarToolTipsEnabled() const;
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/*! Enables or disables vertical scrollbar's. */
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//moved void setScrollbarToolTipsEnabled(bool set);
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/*! \return maximum number of rows that can be displayed per one "page"
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for current table view's size. */
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virtual int rowsPerPage() const;
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TQRect cellGeometry(int row, int col) const;
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int columnWidth(int col) const;
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int rowHeight() const;
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int columnPos(int col) const;
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int rowPos(int row) const;
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int columnAt(int pos) const;
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int rowAt(int pos, bool ignoreEnd=false) const;
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/*! \return last row visible on the screen (counting from 0).
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The returned value is guaranteed to be smaller or equal to currentRow() or -1
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if there are no rows. */
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virtual int lastVisibleRow() const;
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/*! Redraws specified cell. */
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virtual void updateCell(int row, int col);
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/*! Redraws the current cell. Implemented after KexiDataAwareObjectInterface. */
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virtual void updateCurrentCell();
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/*! Redraws all cells of specified row. */
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virtual void updateRow(int row);
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bool editableOnDoubleClick() const;
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void setEditableOnDoubleClick(bool set);
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//! \return true if the vertical header is visible
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bool verticalHeaderVisible() const;
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//! Sets vertical header's visibility
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void setVerticalHeaderVisible(bool set);
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//! \return true if the horizontal header is visible
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bool horizontalHeaderVisible() const;
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//! Sets horizontal header's visibility
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void setHorizontalHeaderVisible(bool set);
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#ifndef KEXI_NO_PRINT
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// printing
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// void setupPrinter(KPrinter &printer);
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void print(KPrinter &printer);
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#endif
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// reimplemented for internal reasons
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virtual TQSizePolicy sizePolicy() const;
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virtual TQSize sizeHint() const;
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virtual TQSize minimumSizeHint() const;
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/*! Reimplemented to update cached fonts and row sizes for the painter. */
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void setFont(const TQFont &f);
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virtual TQSize tableSize() const;
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void emitSelected();
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//! single shot after 1ms for contents updatinh
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void triggerUpdate();
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typedef enum ScrollDirection
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{
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ScrollUp,
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ScrollDown,
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ScrollLeft,
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ScrollRight
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};
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virtual bool eventFilter( TQObject *o, TQEvent *e );
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//! Initializes standard editor cell editor factories. This is called internally, once.
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static void initCellEditorFactories();
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/*! \return highlighted row number or -1 if no row is highlighted.
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Makes sense if row highlighting is enabled.
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@see Appearance::rowHighlightingEnabled setHighlightedRow() */
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int highlightedRow() const;
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KexiTableItem *highlightedItem() const;
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/*! \return vertical scrollbar. Implemented for KexiDataAwareObjectInterface. */
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virtual TQScrollBar* verticalScrollBar() const { return TQScrollView::verticalScrollBar(); }
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public slots:
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virtual void setData( KexiTableViewData *data, bool owner = true )
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{ KexiDataAwareObjectInterface::setData( data, owner ); }
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virtual void clearColumnsInternal(bool repaint);
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/*! Adjusts \a colNum column's width to its (current) contents.
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If \a colNum == -1, all columns' width is adjusted. */
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void adjustColumnWidthToContents(int colNum = -1);
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//! Sets width of column width to \a width.
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void setColumnWidth(int col, int width);
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/*! If \a set is true, \a colNum column is resized to take full possible width.
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If \a set is false, no automatic resize will be performed.
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If \a colNum is -1, all columns are equally resized, when needed, to take full possible width.
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This method behaves like TQHeader::setStretchEnabled ( bool b, int section ). */
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void setColumnStretchEnabled( bool set, int colNum );
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/*! Maximizes widths of columns selected by \a columnList, so the horizontal
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header has maximum overall width. Each selected column's width will be increased
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by the same value. Does nothing if \a columnList is empty or there is no free space
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to resize columns. If this table view is not visible, resizing will be performed on showing. */
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void maximizeColumnsWidth( const TQValueList<int> &columnList );
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/*! Adjusts the size of the sections to fit the size of the horizontal header
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as completely as possible. Only sections for which column stretch is enabled will be resized.
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\sa setColumnStretchEnabled() TQHeader::adjustHeaderSize() */
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void adjustHorizontalHeaderSize();
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/*! Sets highlighted row number or -1 if no row has to be highlighted.
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Makes sense if row highlighting is enabled.
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@see Appearance::rowHighlightingEnabled */
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void setHighlightedRow(int row);
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/*! Sets no row that will be highlighted. Equivalent to setHighlightedRow(-1). */
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inline void clearHighlightedRow() { setHighlightedRow(-1); }
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/*! Ensures that cell at \a row and \a col is visible.
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If \a col is -1, current column number is used. \a row and \a col (if not -1) must
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be between 0 and rows() (or cols() accordingly). */
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virtual void ensureCellVisible(int row, int col/*=-1*/);
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// void gotoNext();
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//js int findString(const TQString &string);
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/*! Deletes currently selected record; does nothing if no record
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is currently selected. If record is in edit mode, editing
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is cancelled before deleting. */
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virtual void deleteCurrentRow() { KexiDataAwareObjectInterface::deleteCurrentRow(); }
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/*! Inserts one empty row above row \a row. If \a row is -1 (the default),
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new row is inserted above the current row (or above 1st row if there is no current).
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A new item becomes current if row is -1 or if row is equal currentRow().
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This method does nothing if:
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-inserting flag is disabled (see isInsertingEnabled())
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-read-only flag is set (see isReadOnly())
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\ return inserted row's data
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*/
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virtual KexiTableItem *insertEmptyRow(int row = -1)
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{ return KexiDataAwareObjectInterface::insertEmptyRow(row); }
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/*! Used when Return key is pressed on cell or "+" nav. button is clicked.
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Also used when we want to continue editing a cell after "invalid value" message
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was displayed (in this case, \a setText is usually not empty, what means
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that text will be set in the cell replacing previous value).
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*/
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virtual void startEditCurrentCell(const TQString& setText = TQString())
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{ KexiDataAwareObjectInterface::startEditCurrentCell(setText); }
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/*! Deletes currently selected cell's contents, if allowed.
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In most cases delete is not accepted immediately but "row editing" mode is just started. */
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virtual void deleteAndStartEditCurrentCell()
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{ KexiDataAwareObjectInterface::deleteAndStartEditCurrentCell(); }
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/*! Cancels row editing All changes made to the editing
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row during this current session will be undone.
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\return true on success or false on failure (e.g. when editor does not exist) */
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virtual bool cancelRowEdit() { return KexiDataAwareObjectInterface::cancelRowEdit(); }
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/*! Accepts row editing. All changes made to the editing
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row during this current session will be accepted (saved).
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\return true if accepting was successful, false otherwise
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(e.g. when current row contain data that does not meet given constraints). */
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virtual bool acceptRowEdit() { return KexiDataAwareObjectInterface::acceptRowEdit(); }
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/*! Specifies, if this table view automatically accepts
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row editing (using acceptRowEdit()) on accepting any cell's edit
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(i.e. after acceptEditor()). \sa acceptsRowEditAfterCellAccepting() */
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virtual void setAcceptsRowEditAfterCellAccepting(bool set)
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{ KexiDataAwareObjectInterface::setAcceptsRowEditAfterCellAccepting(set); }
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/*! Specifies, if this table accepts dropping data on the rows.
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If enabled:
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- dragging over row is indicated by drawing a line at bottom side of this row
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- dragOverRow() signal will be emitted on dragging,
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-droppedAtRow() will be emitted on dropping
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By default this flag is set to false. */
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virtual void setDropsAtRowEnabled(bool set) { KexiDataAwareObjectInterface::setDropsAtRowEnabled(set); }
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virtual bool cancelEditor() { return KexiDataAwareObjectInterface::cancelEditor(); }
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virtual bool acceptEditor() { return KexiDataAwareObjectInterface::acceptEditor(); }
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signals:
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virtual void dataSet( KexiTableViewData *data );
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virtual void itemSelected(KexiTableItem *);
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virtual void cellSelected(int col, int row);
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void itemReturnPressed(KexiTableItem *, int row, int col);
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void itemDblClicked(KexiTableItem *, int row, int col);
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void itemMouseReleased(KexiTableItem *, int row, int col);
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void dragOverRow(KexiTableItem *item, int row, TQDragMoveEvent* e);
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void droppedAtRow(KexiTableItem *item, int row, TQDropEvent *e, KexiTableItem*& newItem);
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/*! Data has been refreshed on-screen - emitted from initDataContents(). */
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virtual void dataRefreshed();
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virtual void itemChanged(KexiTableItem *, int row, int col);
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virtual void itemChanged(KexiTableItem *, int row, int col, TQVariant oldValue);
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virtual void itemDeleteRequest(KexiTableItem *, int row, int col);
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virtual void currentItemDeleteRequest();
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//! Emitted for spreadsheet mode when an item was deleted and a new item has been appended
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virtual void newItemAppendedForAfterDeletingInSpreadSheetMode();
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// void addRecordRequest();
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// void contextMenuRequested(KexiTableItem *, int row, int col, const TQPoint &);
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void sortedColumnChanged(int col);
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//! emmited when row editing is started (for updating or inserting)
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void rowEditStarted(int row);
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//! emmited when row editing is terminated (for updating or inserting)
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//! no matter if accepted or not
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void rowEditTerminated(int row);
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//! Emitted in initActions() to force reload actions
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//! You should remove existing actions and add them again.
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void reloadActions();
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protected slots:
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void slotSettingsChanged(int category);
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virtual void slotDataDestroying() { KexiDataAwareObjectInterface::slotDataDestroying(); }
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virtual void slotRowsDeleted( const TQValueList<int> & );
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//! updates display after many rows deletion
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void slotColumnWidthChanged( int col, int os, int ns );
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void slotSectionHandleDoubleClicked( int section );
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void slotUpdate();
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//! implemented because we needed this as slot
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virtual void sortColumnInternal(int col, int order = 0)
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{ KexiDataAwareObjectInterface::sortColumnInternal(col, order); }
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void slotAutoScroll();
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//! internal, used when top header's size changed
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void slotTopHeaderSizeChange( int section, int oldSize, int newSize );
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//! receives a signal from cell editors
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void slotEditRequested();
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/*! Reloads data for this widget.
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Handles KexiTableViewData::reloadRequested() signal. */
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virtual void reloadData();
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//! Handles KexiTableViewData::rowRepaintRequested() signal
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virtual void slotRowRepaintRequested(KexiTableItem& item);
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//! Handles KexiTableViewData::aboutToDeleteRow() signal. Prepares info for slotRowDeleted().
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virtual void slotAboutToDeleteRow(KexiTableItem& item, KexiDB::ResultInfo* result, bool repaint)
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{ KexiDataAwareObjectInterface::slotAboutToDeleteRow(item, result, repaint); }
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//! Handles KexiTableViewData::rowDeleted() signal to repaint when needed.
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virtual void slotRowDeleted() { KexiDataAwareObjectInterface::slotRowDeleted(); }
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//! Handles KexiTableViewData::rowInserted() signal to repaint when needed.
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virtual void slotRowInserted(KexiTableItem *item, bool repaint)
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{ KexiDataAwareObjectInterface::slotRowInserted(item, repaint); }
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//! Like above, not db-aware version
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virtual void slotRowInserted(KexiTableItem *item, uint row, bool repaint)
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{ KexiDataAwareObjectInterface::slotRowInserted(item, row, repaint); }
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/*! Handles verticalScrollBar()'s valueChanged(int) signal.
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Called when vscrollbar's value has been changed. */
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virtual void vScrollBarValueChanged(int v) { KexiDataAwareObjectInterface::vScrollBarValueChanged(v); }
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/*! Handles sliderReleased() signal of the verticalScrollBar(). Used to hide the "row number" tooltip. */
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virtual void vScrollBarSliderReleased() { KexiDataAwareObjectInterface::vScrollBarSliderReleased(); }
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/*! Handles timeout() signal of the m_scrollBarTipTimer. If the tooltip is visible,
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m_scrollBarTipTimerCnt is set to 0 and m_scrollBarTipTimerCnt is restarted;
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else the m_scrollBarTipTimerCnt is just set to 0.*/
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virtual void scrollBarTipTimeout() { KexiDataAwareObjectInterface::scrollBarTipTimeout(); }
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protected:
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/*! Reimplementation for KexiDataAwareObjectInterface
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Initializes data contents (resizes it, sets cursor at 1st row).
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Called on setData(). Also called once on show event after
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reloadRequested() signal was received from KexiTableViewData object. */
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virtual void initDataContents();
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/*! Implementation for KexiDataAwareObjectInterface.
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Updates widget's contents size using TQScrollView::resizeContents()
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depending on tableSize(). */
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virtual void updateWidgetContentsSize();
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/*! Reimplementation for KexiDataAwareObjectInterface */
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virtual void clearVariables();
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/*! Implementation for KexiDataAwareObjectInterface */
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virtual int currentLocalSortingOrder() const;
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/*! Implementation for KexiDataAwareObjectInterface */
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virtual int currentLocalSortColumn() const;
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/*! Implementation for KexiDataAwareObjectInterface */
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virtual void setLocalSortingOrder(int col, int order);
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/*! Implementation for KexiDataAwareObjectInterface */
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virtual void updateGUIAfterSorting();
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/*! Implementation for KexiDataAwareObjectInterface */
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virtual void updateWidgetScrollBars() { updateScrollBars(); }
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// /*! Implementation for KexiDataAwareObjectInterface */
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// virtual void emitSortedColumnChanged(int col) { emit sortedColumnChanged(col); }
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// /*! Implementation for KexiDataAwareObjectInterface */
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// virtual void emitRowEditTerminated(int row) { emit rowEditTerminated(row); }
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/*! Implementation for KexiDataAwareObjectInterface.
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Adds another section within the horizontal header. */
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virtual void addHeaderColumn(const TQString& caption, const TQString& description,
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const TQIconSet& icon, int size);
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/*! @internal \return true if the row defined by \a item has default
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value at column \a col. If this is the case and \a value is not NULL,
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*value is set to the default value. */
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bool isDefaultValueDisplayed(KexiTableItem *item, int col, TQVariant* value = 0);
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//! painting and layout
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void drawContents(TQPainter *p, int cx, int cy, int cw, int ch);
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void createBuffer(int width, int height);
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void paintCell(TQPainter* p, KexiTableItem *item, int col, int row, const TQRect &cr, bool print=false);
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void paintEmptyArea(TQPainter *p, int cx, int cy, int cw, int ch);
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void updateGeometries();
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TQPoint contentsToViewport2( const TQPoint &p );
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void contentsToViewport2( int x, int y, int& vx, int& vy );
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TQPoint viewportToContents2( const TQPoint& vp );
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// event handling
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virtual void contentsMousePressEvent(TQMouseEvent* e);
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virtual void contentsMouseReleaseEvent(TQMouseEvent* e);
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//! @internal called by contentsMouseOrEvent() contentsMouseReleaseEvent() to move cursor
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bool handleContentsMousePressOrRelease(TQMouseEvent* e, bool release);
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virtual void contentsMouseMoveEvent(TQMouseEvent* e);
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virtual void contentsMouseDoubleClickEvent(TQMouseEvent* e);
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virtual void keyPressEvent(TQKeyEvent* e);
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virtual void focusInEvent(TQFocusEvent* e);
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virtual void focusOutEvent(TQFocusEvent* e);
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virtual void resizeEvent(TQResizeEvent* e);
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virtual void viewportResizeEvent(TQResizeEvent *e);
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virtual void showEvent(TQShowEvent *e);
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virtual void contentsDragMoveEvent(TQDragMoveEvent *e);
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virtual void contentsDropEvent(TQDropEvent *e);
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virtual void viewportDragLeaveEvent(TQDragLeaveEvent *e);
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virtual void paletteChange( const TQPalette &oldPalette );
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/*! Implementation for KexiDataAwareObjectInterface */
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virtual KexiDataItemInterface *editor( int col, bool ignoreMissingEditor = false );
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inline KexiTableEdit *tableEditorWidget( int col, bool ignoreMissingEditor = false )
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{ return dynamic_cast<KexiTableEdit*>( editor( col, ignoreMissingEditor ) ); }
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/*! Implementation for KexiDataAwareObjectInterface */
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virtual void editorShowFocus( int row, int col );
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//! Creates editors and shows it, what usually means the beginning of a cell editing
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virtual void createEditor(int row, int col, const TQString& addText = TQString(),
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bool removeOld = false);
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bool focusNextPrevChild(bool next);
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/*! Used in key event: \return true if event \a e should execute action \a action_name.
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Action shortcuts defined by shortCutPressed() are reused, if present, and if \a e matches
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given action's shortcut - false is returned (beause action is already performed at main
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window's level).
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*/
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bool shortCutPressed( TQKeyEvent *e, const TQCString &action_name );
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#if 0 //we have now KexiActionProxy
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/*! Updates visibility/accesibility of popup menu items,
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returns false if no items are visible after update. */
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bool updateContextMenu();
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#endif
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/*! Shows context menu at \a pos for selected cell
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if menu is configured,
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else: contextMenuRequested() signal is emmited.
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Method used in contentsMousePressEvent() (for right button)
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and keyPressEvent() for TQt::Key_Menu key.
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If \a pos is TQPoint(-1,-1) (the default), menu is positioned below the current cell.
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*/
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void showContextMenu( const TQPoint& pos = TQPoint(-1,-1) );
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/*! internal */
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inline void paintRow(KexiTableItem *item,
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TQPainter *pb, int r, int rowp, int cx, int cy,
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int colfirst, int collast, int maxwc);
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virtual void setHBarGeometry( TQScrollBar & hbar, int x, int y, int w, int h );
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//! Setups navigator widget
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void setupNavigator();
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//! internal, to determine valid row number when navigator text changed
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int validRowNumber(const TQString& text);
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/*! Reimplementation for KexiDataAwareObjectInterface
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(viewport()->setFocus() is just added) */
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virtual void removeEditor();
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//! Internal: updated sched fonts for painting.
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void updateFonts(bool repaint = false);
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/*! @internal Changes bottom margin settings, in pixels.
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At this time, it's used by KexiComboBoxPopup to decrease margin for popup's table. */
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void setBottomMarginInternal(int pixels);
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virtual void updateWidgetContents() { update(); }
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//! for navigator
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virtual void moveToRecordRequested(uint r);
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virtual void moveToLastRecordRequested();
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virtual void moveToPreviousRecordRequested();
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virtual void moveToNextRecordRequested();
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virtual void moveToFirstRecordRequested();
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virtual void addNewRecordRequested() { KexiDataAwareObjectInterface::addNewRecordRequested(); }
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//! Copy current selection to a clipboard (e.g. cell)
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virtual void copySelection();
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//! Cut current selection to a clipboard (e.g. cell)
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virtual void cutSelection();
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//! Paste current clipboard contents (e.g. to a cell)
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virtual void paste();
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/*! Used in KexiDataAwareObjectInterface::slotRowDeleted()
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to repaint tow \a row and all visible below. */
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virtual void updateAllVisibleRowsBelow(int row);
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void updateAfterCancelRowEdit();
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void updateAfterAcceptRowEdit();
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/*! Sets \a cellValue if there is a lookup value for the cell \a item.
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Used in KexiTableView::paintCell() and KexiTableViewCellToolTip::maybeTip()
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\return true is \a cellValue has been found. */
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bool getVisibleLookupValue(TQVariant& cellValue, KexiTableEdit *edit,
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KexiTableItem *item, KexiTableViewColumn *tvcol) const;
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// //! Called to repaint contents after a row is deleted.
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// void repaintAfterDelete();
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KexiTableViewPrivate *d;
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class WhatsThis;
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friend class KexiTableItem;
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friend class WhatsThis;
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friend class KexiTableViewCellToolTip;
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};
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#endif
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