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tdebase/kate/app/katesession.h

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/* This file is part of the KDE project
Copyright (C) 2005 Christoph Cullmann <cullmann@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef __KATE_SESSION_H__
#define __KATE_SESSION_H__
#include "katemain.h"
#include <kdialogbase.h>
#include <ksimpleconfig.h>
#include <ksharedptr.h>
#include <tdeaction.h>
#include <tqobject.h>
#include <tqptrlist.h>
#include <tqvaluelist.h>
#include <tqstringlist.h>
#include <tdelistview.h>
class KateViewSpace;
class KDirWatch;
class KPushButton;
class TDEListView;
class TQCheckBox;
class KateSessionManager;
//BEGIN KateSession
/**
* An object representing a Kate's session.
*/
class KateSession
{
public:
/**
* create a new session and read the config from fileName if it exists
* @param manager the session manager handling this session
* @param sessionName session name
* @param fileName file where session config is saved to/restored from
*/
KateSession(const KateSessionManager &manager, const TQString &sessionName, const TQString &fileName);
/**
* duplicate an existing session into a new one with the given new name.
* If the existing session is read-only, the new one will *not* be read-only by default
* @param session the existing session
* @param newSessionName the name of the new session
*/
KateSession(const KateSession &session, const TQString &newSessionName);
/**
* Destructor
*/
~KateSession();
/**
* @return the session name
*/
const TQString& getSessionName() const { return m_sessionName; }
/**
* Set the new session name
* @param sessionName the new session name
*/
void setSessionName(const TQString &sessionName);
/**
* @return whether the session is read only or not
*/
bool isReadOnly() const { return m_readOnly; }
/**
* Set session read only status
* @param readOnly if true, the session status can not be modified
*/
void setReadOnly(bool readOnly) { m_readOnly = readOnly; }
/**
* @return the session filename if available, otherwise the null string
*/
const TQString& getSessionFilename() const { return m_filename; }
/**
* @return whether the session is still volatile, i.e. it has never
* been saved and never been named
*/
bool isStillVolatile() const;
/**
* @return the number of documents in the session
*/
int getDocCount() const { return m_documents.count(); }
/**
* Load session info from the saved file
* @param includeGUIInfo if true, also load the information about the GUI elements
*/
void load(bool includeGUIInfo);
/**
* Save session info
* @param saveGUIInfo if true, save also the information about the GUI elements
* @param setReadOnly necessary to save a session that has to be turned to read only
*/
void save(bool saveGUIInfo, bool setReadOnly = false);
/**
* Activate the session
*/
void activate();
private:
friend class KateViewSpace;
/**
* @return the session config object
*/
TDEConfig* getConfig() const { return m_config; }
/**
* create a new filename for a session object
*/
void createFilename();
const KateSessionManager &m_manager; // The session manager that handles this session
TQString m_sessionName;
TQString m_filename;
bool m_readOnly;
TQStringList m_documents; // document URLs
KSimpleConfig *m_config; // session config
};
//END KateSession
//BEGIN KateSessionManager
//FIXME (advanced - multiple main windows or multiple Kate instances)
//There should be only one session manager regardless of how many main windows of Kate are open.
//Changes should propagate to all session panels. Different Kate main windows should run different
//sessions. If the user switches to a session already opened in another Kate window, the other window
//should be brought up to the screen (eventually ask user confirmation first).
//This would allow a safe use of multiple Kate main windows/instances without overwriting session information
//among them. Currently the last instance/main window to be closed will overwrite the information previously
//saved by other Kate instances.
/**
* The Kate session manager. It takes care of storing and retrieving each session object
* as well as providing methods to operate on them.
*
* @note The Kate session manager takes ownership of each session object it handles.
*/
//FIXME update the sessions.list file when switching to another session or to a new session
//
//FIXME create new unnamed session, choose 'save' as session switch option. Exit Kate.
// Session is saved without asking for a name
//FIXME improve getStartupOption/getSwitchOption/setSwitchOption using new signal
// KateApp::optionsChanged()
//FIXME add kdDebug statement to ease debugging
class KateSessionManager : public TQObject
{
Q_OBJECT
public:
enum
{
INVALID_SESSION = -1
};
// Session options on Kate startup
enum
{
STARTUP_NEW = 0, // New session
STARTUP_LAST, // Use last session
STARTUP_MANUAL // Manually choose a session
};
// Session options on session switch or Kate shutdown
enum
{
SWITCH_DISCARD = 0, // Don't save current session
SWITCH_SAVE, // Save current session
SWITCH_ASK // Ask user what to do
};
/**
* get a pointer to the unique KateSessionManager instance.
* If the manager does not exist yet, create it.
*/
static KateSessionManager* self();
/**
* Destructor
*/
~KateSessionManager();
/**
* Save session manager info
* @param saveSessions true = sessions info will be saved
* false = all sessions will be discarded
*/
void saveConfig(bool saveSessions);
/**
* @return the session startup option
* The function checks the config file to see if there was any value update
*/
const int getStartupOption();
/**
* @return the session switch option
* The function checks the config file to see if there was any value update
*/
const int getSwitchOption();
/**
* Set the new session switch preference
* @param option the new option value. Defaults to SWITCH_ASK if the value is invalid.
* @emit switchOptionChanged
*/
void setSwitchOption(int option);
/**
* @return the session files folder name
*/
const TQString& getBaseDir() const { return m_baseDir; }
/**
* @return the number of existing sessions
*/
int getSessionCount() const { return m_sessions.count(); }
/**
* @return the active session id
*/
int getActiveSessionId() const { return m_activeSessionId; }
/**
* @return the active session name
*/
const TQString& getActiveSessionName() /*FIXME const*/ { return m_sessions[m_activeSessionId]->getSessionName(); }
/**
* @param sessionId the id of the session of interest
* @return the name of the specified session
*/
const TQString& getSessionName(int sessionId) /*FIXME const*/;
/**
* @return a reference to the active session
*/
KateSession* getActiveSession() { return m_sessions[m_activeSessionId]; }
/**
* @param sessionId the id of the session to return
* @return a reference to the specified session
*/
KateSession* getSessionFromId(int sessionId);
/**
* Return the session id of the first session whose name matches the
* provided one. In case multiple sessions share the same name,
* the id of the first one found will be returned.
* @param name the session name to look for
* @return the session id of the matching session if it is found,
* otherwise KateSessionManager::INVALID_SESSION.
*/
int getSessionIdFromName(const TQString &name);
/**
* @return a reference to the sessions list
*/
TQPtrList<KateSession>& getSessionsList() { return m_sessions; }
/**
* Activate the selected session.
* @param sessionId the id of the session to activate
* @param saveCurr if true, save the current session before activating the new one
* @return whether the session was activated or not
* @emit sessionActivated
*/
bool activateSession(int sessionId, bool saveCurr = true);
/**
* Create a new session and activate it
* @param sessionName new session name
* @param saveCurr if true, save the current session before activating the new one
* @return the id of the newly created session
* @emit sessionCreated
* @emit sessionDeleted (only when leaving an unstored and unnamed session)
*/
int newSession(const TQString &sessionName = TQString::null, bool saveCurr = true);
/**
* Create a new session and activate it if required
* @param sessionId the id of the session to clone
* @param sessionName the new session name
* @param activate if true, activate the new session after creation
* @param deleteCurr if true, delete the current session after switching
* @return the id of the newly created session
* @emit sessionCreated
*/
int cloneSession(int sessionId, const TQString &sessionName = TQString::null,
bool activate = true, bool deleteCurr = false);
/**
* Restore the current active session to the last saved state
*/
void reloadActiveSession() { m_sessions[m_activeSessionId]->load(true); }
/**
* Restore the last saved session. Can only be used before
* any other session has been activated, i.e. on Kate's startup
* @return whether the session was activated or not
*/
bool restoreLastSession();
/**
* Saves the active session
* @emit sessionSaved (through invoked "void saveSession(int)" method)
*/
void saveActiveSession() { saveSession(m_activeSessionId); }
/**
* Save the specified session
* @param sessionId the id of the session to save
* @emit sessionSaved
*/
void saveSession(int sessionId) { saveSession(sessionId, sessionId == m_activeSessionId); }
/**
* Delete the specified session
* @param sessionId the id of the session to delete
* @param actSessId the id of the next session to activate.
* If INVALID_SESSION or invalid, create a new empty session.
* This is only meaningful when deleting the current active session.
* @return whether the session has been deleted or not
* @emit sessionDeleted
*/
bool deleteSession(int sessionId, int actSessId);
/**
* Move the specified session forward in the session list (by one position)
* @param sessionId the id of the session to move
*/
void moveSessionForward(int sessionId);
/**
* Move the specified session backward in the session list (by one position)
* @param sessionId the id of the session to move
*/
void moveSessionBackward(int sessionId);
/**
* Rename the specified session
* @param sessionId the id of the session to rename
* @param newSessionName the new session name
* @emit sessionRenamed
*/
void renameSession(int sessionId, const TQString &newSessionName);
/**
* Set the read only status of the specified session
* @param sessionId the id of the session to modify
* @param readOnly the new read only status
*/
void setSessionReadOnlyStatus(int sessionId, bool readOnly);
signals:
/**
* Emitted when the session switch option has been set/changed
*/
void switchOptionChanged();
/**
* Emitted once a session has been activated
* @param newSessionId the id of the previous active session
* @param oldSessionId the id of the new active session
*/
void sessionActivated(int newSessionId, int oldSessionId);
/**
* Emitted once a session has been created
* @param sessionId the id of the new session
*/
void sessionCreated(int sessionId);
/**
* Emitted once a session has been saved
* @param sessionId the id of the saved session
*/
void sessionSaved(int sessionId);
/**
* Emitted once a session has been deleted
* @param sessionId the id of the deleted session
*/
void sessionDeleted(int sessionId);
/**
* Emitted once the position of the two sessions have been swapped
* @param sessionIdMin the smallest id of the session couple
* @param sessionIdMax the biggest id of the session couple
*/
void sessionsSwapped(int sessionIdMin, int sessionIdMax);
/**
* Emitted once a session has been renamed
* @param sessionId the id of the new session
*/
void sessionRenamed(int sessionId);
protected:
KateSessionManager();
// Session options on Kate startup
enum
{
SO_STARTUP = 0, // session startup option only
SO_SWITCH, // session switch option only
SO_ALL, // session startup and switch options
};
/**
* Updated the session startup and switch options
* @param optionType specifies which options needs to be updated
*/
void updateSessionOptions(int optionType);
/**
* Save the session startup and switch options to the config file
* @param optionType specifies which options needs to be saved
*/
void saveSessionOptions(int optionType);
/**
* Swap the position of the two specified sessions in the session list
* @param sessionId1 the id of the first session
* @param sessionId2 the id of the second session
* @emit sessionsSwapped
*/
void swapSessionsPosition(int sessionId1, int sessionId2);
/**
* Save the specified session
* @param sessionId the id of the session to save
* @param saveGUIInfo if true, save also the information about the GUI elements
* @param setReadOnly necessary to save a session that has to be turned to read only
* @emit sessionSaved
*/
void saveSession(int sessionId, bool saveGUIInfo, bool setReadOnly = false);
TQString m_baseDir; // folder where session files are stored
TQString m_configFile; // file where the session list config is stored
int m_activeSessionId; // id of the active session
int m_lastSessionId; // id of the last active session before closing Kate
TQPtrList<KateSession> m_sessions; // session list
KSimpleConfig *m_config; // session manager config
int m_startupOption; // session option on Kate startup
int m_switchOption; // session option on session switch or Kate shutdown
static KateSessionManager *ksm_instance; // the only KateSessionManager instance
};
//END KateSessionManager
//BEGIN KateSessionChooserItem
class KateSessionChooserItem : public TDEListViewItem
{
public:
KateSessionChooserItem(TQListView *listview, const TQString &sessionName, const TQString &nDoc, int sessionId)
: TDEListViewItem(listview, sessionName, nDoc), m_sessionId(sessionId) {}
int getSessionId() { return m_sessionId; }
void setSessionId(int sessionId) { m_sessionId = sessionId; }
protected:
int m_sessionId;
};
//END KateSessionChooserItem
//BEGIN KateSessionChooser
//FIXME create one single KateSessionChooser and reuse it all the time
class KateSessionChooser : public KDialogBase
{
Q_OBJECT
public:
enum Result
{
RESULT_NO_OP = TQDialog::Rejected,
RESULT_OPEN_EXISTING,
RESULT_OPEN_NEW,
RESULT_QUIT_KATE
};
KateSessionChooser(TQWidget *parent);
~KateSessionChooser() {}
int getSelectedSessionId(); // return the session id of the selected session
protected slots:
void slotUser1(); // open existing session
void slotUser2(); // open new session
void slotUser3(); // quit kate
void slotSelectionChanged(); // list selection has changed
protected:
TDEListView *m_listview;
};
//END KateSessionChooser
#endif