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335 lines
14 KiB
335 lines
14 KiB
/* This file is part of the KDE project
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Copyright (C) 2003 Lucijan Busch <lucijan@kde.org>
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Copyright (C) 2003-2005 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 KEXIPART_H
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#define KEXIPART_H
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#include <tqobject.h>
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#include <tqmap.h>
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#include <kexiutils/tristate.h>
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#include "kexi.h"
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#include "keximainwindow.h"
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class KActionCollection;
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class KexiDialogBase;
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class KexiDialogTempData;
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class KexiViewBase;
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class KexiMainWindowImpl;
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class KAction;
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class KShortcut;
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class KTabWidget;
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namespace KexiPart
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{
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class Info;
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class Item;
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class GUIClient;
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class PartPrivate;
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class StaticInfo;
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/*! Official (registered) type IDs for objects like table, query, form... */
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enum ObjectTypes {
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TableObjectType = KexiDB::TableObjectType, //!< 1, like in KexiDB::ObjectTypes
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QueryObjectType = KexiDB::QueryObjectType, //!< 2, like in KexiDB::ObjectTypes
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FormObjectType = 3,
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ReportObjectType = 4,
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ScriptObjectType = 5,
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WebObjectType = 6,
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MacroObjectType = 7,
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LastObjectType = 7, //ALWAYS UPDATE THIS
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UserObjectType = 100 //!< external types
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};
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/**
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* The main class for kexi frontend parts like tables, queries, forms and reports
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*/
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class KEXICORE_EXPORT Part : public TQObject
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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/*! Constructor. */
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Part(TQObject *parent, const char *name, const TQStringList &);
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/*! Destructor. */
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virtual ~Part();
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//! @todo make it protected, outside world should use KexiProject
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/*! Try to execute the part. Implementations of this \a Part
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are able to overwrite this method to offer execution.
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\param item The \a KexiPart::Item that should be executed.
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\param sender The sender TQObject which likes to execute this \a Part or
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NULL if there is no sender. The KFormDesigner uses this to pass
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the actual widget (e.g. the button that was pressed).
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\return true if execution was successfully else false.
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*/
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virtual bool execute(KexiPart::Item* item, TQObject* sender = 0) {
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Q_UNUSED(item);
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Q_UNUSED(sender);
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return false;
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}
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/*! \return supported modes for dialogs created by this part, i.e. a combination
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of Kexi::ViewMode enum elements.
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Set this member in your KexiPart subclass' ctor, if you need to override the default value
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that equals Kexi::DataViewMode | Kexi::DesignViewMode,
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or Kexi::DesignViewMode in case of Kexi::PartStaticPart object.
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This information is used to set supported view modes for every
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KexiDialogBase-derived object created by this KexiPart. */
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inline int supportedViewModes() const { return m_supportedViewModes; }
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/*! \return supported modes for dialogs created by this part in "user mode", i.e. a combination
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of Kexi::ViewMode enum elements.
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Set this member in your KexiPart subclass' ctor, if you need to override the default value
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that equals Kexi::DataViewMode. or 0 in case of Kexi::PartStaticPart object.
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This information is used to set supported view modes for every
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KexiDialogBase-derived object created by this KexiPart. */
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inline int supportedUserViewModes() const { return m_supportedUserViewModes; }
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//! @todo make it protected, outside world should use KexiProject
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/*! "Opens" an instance that the part provides, pointed by \a item in a mode \a viewMode.
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\a viewMode is one of Kexi::ViewMode enum.
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\a staticObjectArgs can be passed for static Kexi Parts. */
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KexiDialogBase* openInstance(KexiMainWindow *win, KexiPart::Item &item,
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int viewMode = Kexi::DataViewMode, TQMap<TQString,TQString>* staticObjectArgs = 0);
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//! @todo make it protected, outside world should use KexiProject
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/*! Removes any stored data pointed by \a item (example: table is dropped for table part).
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From now this data is inaccesible, and \a item disappear.
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You do not need to remove \a item, or remove object's schema stored in the database,
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beacuse this will be done automatically by KexiProject after successful
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call of this method. All object's data blocks are also automatically removed from database
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(from "kexi__objectdata" table).
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For this, a database connection associated with kexi project owned by \a win can be used.
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Database transaction is started by KexiProject before calling this method,
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and it will be rolled back if you return false here.
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You shouldn't use by hand transactions here.
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Default implementation just removes object from kexi__* system structures
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at the database backend using KexiDB::Connection::removeObject(). */
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virtual bool remove(KexiMainWindow *win, KexiPart::Item & item);
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/*! Renames stored data pointed by \a item to \a newName
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(example: table name is altered in the database).
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For this, a database connection associated with kexi project owned by \a win can be used.
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You do not need to change \a item, and change object's schema stored in the database,
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beacuse this is automatically handled by KexiProject.
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Database transaction is started by KexiProject before calling this method,
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and it will be rolled back if you return false here.
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You shouldn't use by hand transactions here.
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Default implementation does nothing and returns true. */
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virtual tristate rename(KexiMainWindow *win, KexiPart::Item &item, const TQString& newName);
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/*! Creates and returns a new temporary data for a dialog \a dialog.
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This method is called on openInstance() once per dialog.
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Reimplement this to return KexiDialogTempData subclass instance.
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Default implemention just returns empty KexiDialogTempData object. */
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virtual KexiDialogTempData* createTempData(KexiDialogBase* dialog);
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/*! Creates a new view for mode \a viewMode, \a item and \a parent. The view will be
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used inside \a dialog. */
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virtual KexiViewBase* createView(TQWidget *parent, KexiDialogBase* dialog,
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KexiPart::Item &item, int viewMode = Kexi::DataViewMode, TQMap<TQString,TQString>* staticObjectArgs = 0) = 0;
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/*! i18n'd instance name usable for displaying in gui as object's name.
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The name is valid identifier - contains latin1 lowercase characters only.
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@todo move this to Info class when the name could be moved as localized property
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to service's .desktop file. */
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TQCString instanceName() const;
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/*! i18n'd instance name usable for displaying in gui as object's caption.
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@todo move this to Info class when the name could be moved as localized property
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to service's .desktop file. */
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TQString instanceCaption() const;
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inline Info *info() const { return m_info; }
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/*! \return part's GUI Client, so you can
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create part-wide actions using this client. */
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inline GUIClient *guiClient() const { return m_guiClient; }
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/*! \return part's GUI Client, so you can
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create instance-wide actions using this client. */
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inline GUIClient *instanceGuiClient(int mode = 0) const
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{ return m_instanceGuiClients[mode]; }
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#if 0
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/**
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* @returns the datasource object of this part
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* reeimplement it to make a part work as dataprovider ;)
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*/
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virtual DataSource *dataSource() { return 0; }
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#endif
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/*! \return action collection for mode \a viewMode. */
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KActionCollection* actionCollectionForMode(int viewMode) const;
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const Kexi::ObjecttqStatus& lastOperationtqStatus() const { return m_status; }
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/*! \return i18n'd message translated from \a englishMessage.
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This method is useful for messages like:
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"<p>Table \"%1\" has been modified.</p>",
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-- such messages can be accurately translated,
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while this could not: "<p>%1 \"%2\" has been modified.</p>".
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See implementation of this method in KexiTablePart to see
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what strings are needed for translation.
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Default implementation returns generic \a englishMessage.
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In special cases, \a englishMessage can start with ":",
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to indicate that empty string will be generated if
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a part does not offer a message for such \a englishMessage.
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This is used e.g. in KexiMainWindowImpl::closeDialog().
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*/
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virtual TQString i18nMessage(const TQCString& englishMessage,
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KexiDialogBase* dlg) const;
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signals:
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void newObjectRequest( KexiPart::Info *info );
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protected slots:
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void slotCreate();
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protected:
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//! Used by StaticPart
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Part(TQObject* parent, StaticInfo *info);
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// virtual KexiDialogBase* createInstance(KexiMainWindow *win, const KexiPart::Item &item, int viewMode = Kexi::DataViewMode) = 0;
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//! Creates GUICLients for this part, attached to \a win
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//! This method is called from KexiMainWindow
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void createGUIClients(KexiMainWindow *win);
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#if 0
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/*! For reimplementation. Create here all part actions (KAction or similar).
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"Part action" is an action that is bound to given part, not for dialogs
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created with this part, eg. "Open external project" action for Form part.
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Default implementation does nothing.
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*/
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virtual void initPartActions( KActionCollection * ) {};
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/*! For reimplementation. You should here create all instance actions (KAction or similar)
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for \a mode (this method called for every value given by Kexi::ViewMode enum,
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and in special cases, in the future - for user-defined part-specific modes).
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Actions should be bound to action collection \a col.
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"Instance action" is an action that is bound to given dialog instance (created with a part),
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for specific view. \a mo; eg. "Filter data" action for DataViewMode of Table part.
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By creating actions here, you can ensure that after switching to other view mode (eg. from
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Design view to Data view), appropriate actions will be switched/hidden.
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\a mode equal Kexi::AllViewModes means that given actions will be available for
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all supported views.
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Default implementation does nothing.
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*/
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virtual void initInstanceActions( int mode, KActionCollection *col ) {};
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#endif
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virtual void initPartActions();
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virtual void initInstanceActions();
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virtual KexiDB::SchemaData* loadSchemaData(KexiDialogBase *dlg,
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const KexiDB::SchemaData& sdata, int viewMode);
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bool loadDataBlock( KexiDialogBase *dlg, TQString &dataString, const TQString& dataID = TQString());
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/*! Creates shared action for action collection declared
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for 'instance actions' of this part.
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See KexiSharedActionHost::createSharedAction() for details.
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Pass desired KAction subclass with \a subclassName (e.g. "KToggleAction") to have
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that subclass allocated instead just KAction (what is the default). */
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KAction* createSharedAction(int mode, const TQString &text,
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const TQString &pix_name, const KShortcut &cut, const char *name,
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const char *subclassName = 0);
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/*! Convenience version of above method - creates shared toggle action. */
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KAction* createSharedToggleAction(int mode, const TQString &text,
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const TQString &pix_name, const KShortcut &cut, const char *name);
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/*! Creates shared action for action collection declared
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for 'part actions' of this part.
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See KexiSharedActionHost::createSharedAction() for details.
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Pass desired KAction subclass with \a subclassName (e.g. "KToggleAction") to have
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that subclass allocated instead just KAction (what is the default). */
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KAction* createSharedPartAction(const TQString &text,
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const TQString &pix_name, const KShortcut &cut, const char *name,
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const char *subclassName = 0);
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/*! Convenience version of above method - creates shared toggle action
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for 'part actions' of this part. */
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KAction* createSharedPartToggleAction(const TQString &text,
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const TQString &pix_name, const KShortcut &cut, const char *name);
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void setActionAvailable(const char *action_name, bool avail);
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inline void setInfo(Info *info) { m_info = info; }
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/*! This method can be reimplemented to setup additional tabs
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in the property editor panel. Default implementation does nothing.
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This method is called whenever current dialog (KexiDialogBase) is switched and
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type (mime type) of its contents differs from previous one.
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For example, if a user switched from Table Designer to Form Designer,
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additional tab containing Form Designer's object tree should be shown. */
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virtual void setupCustomPropertyPanelTabs(KTabWidget *tab, KexiMainWindow* mainWin);
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//! Set of i18n'd action names for, initialised on KexiPart::Part subclass ctor
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//! The names are useful because the same action can have other name for each part
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//! E.g. "New table" vs "New query" can have different forms for some languages...
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TQMap<TQString,TQString> m_names;
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/*! Supported modes for dialogs created by this part.
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@see supportedViewModes() */
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int m_supportedViewModes;
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/*! Supported modes for dialogs created by this part in "user mode".
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The default is Kexi::DataViewMode. It is altered in classes like KexiSimplePrintingPart.
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@see supportedUserViewModes() */
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int m_supportedUserViewModes;
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Info *m_info;
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GUIClient *m_guiClient;
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TQIntDict<GUIClient> m_instanceGuiClients;
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KexiMainWindow* m_mainWin;
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Kexi::ObjecttqStatus m_status;
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/*! If you're implementing a new part, set this to value >0 in your ctor
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if you have well known (ie registered ID) for your part.
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So far, table, query, form, report and script part have defined their IDs
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(see KexiPart::ObjectTypes). */
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int m_registeredPartID;
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/*! True if newwly created, unsaved objects are dirty. False by default.
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You can change it in your subclass' constructor. */
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bool m_newObjectsAreDirty : 1;
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PartPrivate *d;
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friend class Manager;
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friend class ::KexiMainWindow;
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friend class ::KexiMainWindowImpl;
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friend class GUIClient;
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};
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}
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#endif
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