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299 lines
12 KiB
299 lines
12 KiB
/* This file is part of the KDE project
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Copyright (C) 2004 Cedric Pasteur <cedric.pasteur@free.fr>
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Copyright (C) 2004-2006 Jaroslaw Staniek <js@iidea.pl>
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This library 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 library 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 library; see the file COPYING.LIB. 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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*/
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#ifndef KEXIFORMSCROLLVIEW_H
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#define KEXIFORMSCROLLVIEW_H
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#include "kexidataprovider.h"
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#include "kexiformeventhandler.h"
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#include "widgets/kexidbform.h"
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#include <widget/kexiscrollview.h>
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#include <widget/utils/kexirecordnavigator.h>
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#include <widget/utils/kexisharedactionclient.h>
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#include <widget/tableview/kexidataawareobjectiface.h>
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//! @short KexiFormScrollView class provides a widget for displaying data in a form view
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/*! This class also implements:
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- record navigation handling (KexiRecordNavigatorHandler)
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- shared actions handling (KexiSharedActionClient)
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- data-aware behaviour (KexiDataAwareObjectInterface)
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- data provider bound to data-aware widgets (KexiFormDataProvider)
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@see KexiTableView
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*/
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class KEXIFORMUTILS_EXPORT KexiFormScrollView :
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public KexiScrollView,
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public KexiRecordNavigatorHandler,
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public KexiSharedActionClient,
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public KexiDataAwareObjectInterface,
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public KexiFormDataProvider,
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public KexiFormEventHandler
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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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KexiFormScrollView(TQWidget *parent, bool preview);
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virtual ~KexiFormScrollView();
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void setForm(KFormDesigner::Form *form) { m_form = form; }
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/*! Reimplemented from KexiDataAwareObjectInterface
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for checking 'readOnly' flag from a widget
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('readOnly' flag from data member is still checked though). */
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virtual bool columnEditable(int col);
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/*! \return number of visible columns in this view.
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There can be a number of duplicated columns defined,
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so columns() can return greater or smaller number than dataColumns(). */
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virtual int columns() const;
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/*! \return column information for column number \a col.
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Reimplemented for KexiDataAwareObjectInterface:
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column data corresponding to widget number is used here
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(see fieldNumberForColumn()). */
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virtual KexiTableViewColumn* column(int col);
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/*! \return field number within data model connected to a data-aware
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widget at column \a col. */
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virtual int fieldNumberForColumn(int col) {
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KexiFormDataItemInterface *item = dynamic_cast<KexiFormDataItemInterface*>(
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dbFormWidget()->orderedDataAwareWidgets()->at( col ));
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if (!item)
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return -1;
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KexiFormDataItemInterfaceToIntMap::ConstIterator it(m_fieldNumbersForDataItems.find( item ));
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return it!=m_fieldNumbersForDataItems.constEnd() ? (int)it.data() : -1;
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}
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/*! @internal Used by KexiFormView in view switching. */
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void beforeSwitchView();
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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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Implemented for KexiDataAwareObjectInterface. */
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//! @todo unimplemented for now, this will be used for continuous forms
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virtual int lastVisibleRow() const;
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/*! \return vertical scrollbar. Implemented for KexiDataAwareObjectInterface. */
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virtual TQScrollBar* verticalScrollBar() const { return KexiScrollView::verticalScrollBar(); }
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public slots:
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/*! Reimplemented to update resize policy. */
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virtual void show();
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//virtual void setFocus();
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//! Implementation for KexiDataAwareObjectInterface
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//! \return arbitraty value of 10.
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virtual int rowsPerPage() const;
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//! Implementation for KexiDataAwareObjectInterface
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virtual void ensureCellVisible(int row, int col/*=-1*/);
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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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/*! Cancels changes made to the currently active editor.
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Reverts the editor's value to old one.
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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 cancelEditor();
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public slots:
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/*! Reimplemented to also clear command history right after final resize. */
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virtual void refreshContentsSize();
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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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//! @todo unused for now, will be used for continuous forms
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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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//! @todo unused for now, will be used for continuous forms
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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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//! @todo unused for now, will be used for continuous forms
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virtual void scrollBarTipTimeout() { KexiDataAwareObjectInterface::scrollBarTipTimeout(); }
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signals:
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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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virtual void newItemAppendedForAfterDeletingInSpreadSheetMode(); //!< does nothing
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virtual void dataRefreshed();
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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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virtual void sortedColumnChanged(int col);
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virtual void rowEditStarted(int row);
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virtual void rowEditTerminated(int row);
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virtual void reloadActions();
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protected slots:
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void slotResizingStarted();
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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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//! Like above, not db-aware version
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virtual void slotRowInserted(KexiTableItem *item, uint row, bool repaint);
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virtual void slotRowsDeleted( const TQValueList<int> & );
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virtual void slotDataDestroying() { KexiDataAwareObjectInterface::slotDataDestroying(); }
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/*! Reloads data for this widget.
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Handles KexiTableViewData::reloadRequested() signal. */
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virtual void reloadData() { KexiDataAwareObjectInterface::reloadData(); }
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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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protected:
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//! Implementation for KexiDataAwareObjectInterface
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virtual void clearColumnsInternal(bool repaint);
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//! Implementation for KexiDataAwareObjectInterface
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virtual void addHeaderColumn(const TQString& caption, const TQString& description,
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const TQIconSet& icon, int width);
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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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void sortColumnInternal(int col, int order = 0);
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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 createEditor(int row, int col, const TQString& addText = TQString(),
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bool removeOld = false);
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//! Implementation for KexiDataAwareObjectInterface
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virtual KexiDataItemInterface *editor( int col, bool ignoreMissingEditor = false );
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//! Implementation for KexiDataAwareObjectInterface
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virtual void editorShowFocus( int row, int col );
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/*! Implementation for KexiDataAwareObjectInterface
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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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/*! Implementation for KexiDataAwareObjectInterface
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Redraws all cells of specified row. */
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virtual void updateRow(int row);
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/*! Implementation for KexiDataAwareObjectInterface
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Updates contents of the widget. Just call update() here on your widget. */
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virtual void updateWidgetContents();
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/*! Implementation for KexiDataAwareObjectInterface
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Implementation for KexiDataAwareObjectInterface
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Updates widget's contents size e.g. using TQScrollView::resizeContents(). */
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virtual void updateWidgetContentsSize();
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/*! Implementation for KexiDataAwareObjectInterface
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Updates scrollbars of the widget.
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TQScrollView::updateScrollbars() will be usually called here. */
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virtual void updateWidgetScrollBars();
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KexiDBForm* dbFormWidget() const;
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//! Reimplemented from KexiFormDataProvider. Reaction for change of \a item.
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virtual void valueChanged(KexiDataItemInterface* item);
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/*! Reimplemented from KexiFormDataProvider.
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\return information whether we're currently at new row or now.
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This can be used e.g. by data-aware widgets to determine if "(autonumber)"
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label should be displayed. */
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virtual bool cursorAtNewRow() const;
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//! Implementation for KexiDataAwareObjectInterface
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//! Called by KexiDataAwareObjectInterface::setCursorPosition()
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//! if cursor's position is really changed.
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inline virtual void selectCellInternal();
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/*! Reimplementation: used to refresh "editing indicator" visibility. */
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virtual void initDataContents();
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/*! @internal
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Updates row appearance after canceling row edit.
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Reimplemented from KexiDataAwareObjectInterface: just undoes changes for every data item.
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Used by cancelRowEdit(). */
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virtual void updateAfterCancelRowEdit();
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/*! @internal
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Updates row appearance after accepting row edit.
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Reimplemented from KexiDataAwareObjectInterface: just clears 'edit' indicator.
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Used by cancelRowEdit(). */
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virtual void updateAfterAcceptRowEdit();
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/*! @internal
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Used to invoke copy/paste/cut etc. actions at the focused widget's level. */
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void handleDataWidgetAction(const TQString& actionName);
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/*! @internal */
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bool shouldDisplayDefaultValueForItem(KexiFormDataItemInterface* itemIface) const;
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//virtual bool focusNextPrevChild( bool next );
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KFormDesigner::Form *m_form;
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int m_currentLocalSortColumn, m_localSortingOrder;
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//! Used in selectCellInternal() to avoid fetching the same record twice
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KexiTableItem *m_previousItem;
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};
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#endif
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