tdelibs/kdecore/kstartupinfo.h

/****************************************************************************

 Copyright (C) 2001-2003 Lubos Lunak        <l.lunak@kde.org>

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copy of this software and associated documentation files (the "Software"),
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DEALINGS IN THE SOFTWARE.

****************************************************************************/

#ifndef __KSTARTUPINFO_H
#define __KSTARTUPINFO_H

#include <sys/types.h>
#include <qobject.h>

#ifdef Q_WS_X11 // FIXME(E): Redo in a less X11-specific way

#include <qcstring.h>
#include <qstring.h>
#include <qvaluelist.h>
#include "kdelibs_export.h"

class KStartupInfoId;
class KStartupInfoData;

class KStartupInfoPrivate;

/**
 * Class for manipulating the application startup notification.
 *
 * This class can be used to send information about started application,
 * change the information and receive this information. For detailed
 * description, see kdelibs/kdecore/README.kstartupinfo.
 *
 * You usually don't need to use this class for sending the notification
 * information, as KDE libraries should do this when an application is
 * started (e.g. KRun class).
 *
 * For receiving the startup notification info, create an instance and connect
 * to its slots. It will automatically detect started applications and when
 * they are ready.
 *
 * @see KStartupInfoId
 * @see KStartupInfoData
 *
 * @author Lubos Lunak <l.lunak@kde.org>
 */
class KDECORE_EXPORT KStartupInfo
    : public QObject
    {
    Q_OBJECT
    public:
        /**
         * By default, the startup notification is ended for the application
         * after it shows its first toplevel window. If you app e.g. has
         * several toplevel windows after its startup, you can disable
         * the automatic handling, and call appStarted() manually after
         * all toplevel windows have been shown.
         * @since 3.2
         */
        static void disableAutoAppStartedSending( bool disable = true );

        /**
         * Manual notification that the application has started.
         * If you do not map a (toplevel) window, then startup
         * notification will not disappear for the application
         * until a timeout. You can use this as an alternative
         * method in this case.
         */
        static void appStarted();

        /**
         * Sends explicit notification that the startup notification
         * with id startup_id should end.
         * @since 3.2
         */ 
        static void appStarted( const QCString& startup_id );
        
        /**
         * Use this function if the application got a request with startup
         * notification from outside (for example, when KUniqueApplication::newInstance()
         * is called, or e.g. when khelpcenter opens new URL in its window).
         * The window can be either an already existing and visible window,
         * or a new one, before being shown. Note that this function is usually
         * needed only when a window is reused.
         * @since 3.2
         */
        static void setNewStartupId( QWidget* window, const QCString& startup_id );

        /**
         * If your application shows temporarily some window during its startup,
         * for example a dialog, and only after closing it shows the main window,
         * startup notification would normally be shown while the dialog is visible.
         * To temporarily suspend and resume the notification, use this function.
         * Note that this is cumulative, i.e. after suspending twice, you have to
         * resume twice.
         * @since 3.2
         */
        static void silenceStartup( bool silence );

        /**
         * Creates and returns new startup id. The id includes properly setup
         * user timestamp.
         * @since 3.3
         */
        static QCString createNewStartupId();
	/**
	 *
	 */
	enum {
	    CleanOnCantDetect		= 1 << 0,
	    DisableKWinModule		= 1 << 1,
	    AnnounceSilenceChanges	= 1 << 2
	    };
	
	/**
	 * Creates an instance that will receive the startup notifications.
	 * The various flags passed may be
	 * @li CleanOnCantDetect - when a new unknown window appears, all startup
	 *     notifications for applications that are not compliant with
	 *     the startup protocol are removed
	 * @li DisableKWinModule - KWinModule, which is normally used to detect
	 *     new windows, is disabled. With this flag, checkStartup() must be
	 *     called in order to check newly mapped windows.
	 * @li AnnounceSilenceChanges - normally, startup notifications are
	 *     "removed" when they're silenced, and "recreated" when they're resumed.
	 *     With this flag, the change is normally announced with gotStartupChange().
	 *
	 * @param flags OR-ed combination of flags
	 * @param parent the parent of this QObject (can be 0 for no parent)
	 * @param name the name of the QObject (can be 0 for no name)
	 *
	 */
	KStartupInfo( int flags, QObject* parent = NULL, const char* name = NULL );
	/**
	 * Creates an instance that will receive the startup notifications.
	 *
	 * @param clean_on_cantdetect if true, and a new unknown window appears,
	 *  removes all notification for applications that are not compliant
	 *  with the app startup protocol
	 * @param parent the parent of this QObject (can be 0 for no parent)
	 * @param name the name of the QObject (can be 0 for no name)
	 *
	 * @obsolete
	 */
        KStartupInfo( bool clean_on_cantdetect, QObject* parent = 0, const char* name = 0 );
        virtual ~KStartupInfo();
	/**
	 * Sends given notification data about started application
	 * with the given startup identification. If no notification for this identification
	 * exists yet, it is created, otherwise it's updated. Note that the name field
         * in data is required.
	 * 
	 * @param id the id of the application
	 * @param data the application's data
	 * @return true if successful, false otherwise
	 * @see KStartupInfoId
	 * @see KStartupInfoData
	 */
        static bool sendStartup( const KStartupInfoId& id, const KStartupInfoData& data );

	/**
	 * Like sendStartup , uses dpy instead of qt_xdisplay() for sending the info.
	 * @param dpy the display of the application. Note that the name field
         * in data is required.
	 * @param id the id of the application
	 * @param data the application's data
	 * @return true if successful, false otherwise
	 */
        static bool sendStartupX( Display* dpy, const KStartupInfoId& id,
            const KStartupInfoData& data );

	/**
	 * Sends given notification data about started application
	 * with the given startup identification. This is used for updating the notification
	 * info, if no notification for this identification exists, it's ignored.
	 * @param id the id of the application
	 * @param data the application's data
	 * @return true if successful, false otherwise
	 * @see KStartupInfoId
	 * @see KStartupInfoData
	 */
        static bool sendChange( const KStartupInfoId& id, const KStartupInfoData& data );

	/**
	 * Like sendChange , uses dpy instead of qt_xdisplay() for sending the info.
	 * @param dpy the display of the application.
	 * @param id the id of the application
	 * @param data the application's data
	 * @return true if successful, false otherwise
	 */
        static bool sendChangeX( Display* dpy, const KStartupInfoId& id,
            const KStartupInfoData& data );

	/**
	 * Ends startup notification with the given identification.
	 * @param id the id of the application
	 * @return true if successful, false otherwise
	 */
        static bool sendFinish( const KStartupInfoId& id );

	/**
	 * Like sendFinish , uses dpy instead of qt_xdisplay() for sending the info.
	 * @param dpy the display of the application.
	 * @param id the id of the application
	 * @return true if successful, false otherwise
	 */
        static bool sendFinishX( Display* dpy, const KStartupInfoId& id );

	/**
	 * Ends startup notification with the given identification and the given data ( e.g.
	 * PIDs of processes for this startup notification that exited ).
	 * @param id the id of the application
	 * @param data the application's data
	 * @return true if successful, false otherwise
	 */
        static bool sendFinish( const KStartupInfoId& id, const KStartupInfoData& data );

	/**
	 * Like sendFinish , uses dpy instead of qt_xdisplay() for sending the info.
	 * @param dpy the display of the application.
	 * @param id the id of the application
	 * @param data the application's data
	 * @return true if successful, false otherwise
	 */
        static bool sendFinishX( Display* dpy, const KStartupInfoId& id,
            const KStartupInfoData& data );

	/**
	 * Returns the current startup notification identification for the current
	 * startup notification environment variable. Note that KApplication constructor
	 * unsets the variable and you have to use KApplication::startupId .
	 * @return the current startup notification identification
	 */
        static KStartupInfoId currentStartupIdEnv();
	/**
	 * Unsets the startup notification environment variable.
	 */
        static void resetStartupEnv();
	/**
	 * @li NoMatch    - the window doesn't match any existing startup notification
	 * @li Match      - the window matches an existing startup notification
	 * @li CantDetect - unable to detect if the window matches any existing
	 *			startup notification
	 */
        enum startup_t { NoMatch, Match, CantDetect };
	/**
	 * Checks if the given windows matches any existing startup notification.
	 * @param w the window id to check
	 * @return the result of the operation
	 */
        startup_t checkStartup( WId w );
	/**
	 * Checks if the given windows matches any existing startup notification, and
	 * if yes, returns the identification in id.
	 * @param w the window id to check
	 * @param id if found, the id of the startup notification will be written here
	 * @return the result of the operation
	 */
        startup_t checkStartup( WId w, KStartupInfoId& id );
	/**
	 * Checks if the given windows matches any existing startup notification, and
	 * if yes, returns the notification data in data.
	 * @param w the window id to check
	 * @param data if found, the data of the startup notification will be written here
	 * @return the result of the operation
	 */
        startup_t checkStartup( WId w, KStartupInfoData& data );
	/**
	 * Checks if the given windows matches any existing startup notification, and
	 * if yes, returns the identification in id and notification data in data.
	 * @param w the window id to check
	 * @param id if found, the id of the startup notification will be written here
	 * @param data if found, the data of the startup notification will be written here
	 * @return the result of the operation
	 */
        startup_t checkStartup( WId w, KStartupInfoId& id, KStartupInfoData& data );
	/**
	 * Sets the timeout for notifications, after this timeout a notification is removed.
	 * @param secs the new timeout in seconds
	 */
        void setTimeout( unsigned int secs );
	/**
	 * Sets the startup notification window property on the given window.
	 * @param window the id of the window
	 * @param id the startup notification id
	 */
        static void setWindowStartupId( WId window, const QCString& id );
	/**
	 * Returns startup notification identification of the given window.
	 * @param w the id of the window
	 * @return the startup notification id. Can be null if not found.
	 */
        static QCString windowStartupId( WId w );
        /**
         * @internal
         */
        static void handleAutoAppStartedSending();
	/**
	 * @internal
	 */
        class Data;
    signals:
	/**
	 * Emitted when a new startup notification is created (i.e. a new application is
	 * being started).
	 * @param id the notification identification
	 * @param data the notification data
	 */
        void gotNewStartup( const KStartupInfoId& id, const KStartupInfoData& data );
	/**
	 * Emitted when a startup notification changes.
	 * @param id the notification identification
	 * @param data the notification data
	 */
        void gotStartupChange( const KStartupInfoId& id, const KStartupInfoData& data );
	/**
	 * Emitted when a startup notification is removed (either because it was detected
	 * that the application is ready or because of a timeout).
	 * @param id the notification identification
	 * @param data the notification data
	 */
        void gotRemoveStartup( const KStartupInfoId& id, const KStartupInfoData& data );
    protected:
	/**
	 * 
	 */ 
	virtual void customEvent( QCustomEvent* e_P );
    private slots:
        void startups_cleanup();
        void startups_cleanup_no_age();
        void got_message( const QString& msg );
        void window_added( WId w );
	void slot_window_added( WId w );
    private:
        void init( int flags );
        friend class KStartupInfoPrivate;
        void got_startup_info( const QString& msg_P, bool update_only_P );
        void got_remove_startup_info( const QString& msg_P );
        void new_startup_info_internal( const KStartupInfoId& id_P,
            Data& data_P, bool update_only_P );
        void remove_startup_info_internal( const KStartupInfoId& id_P );
        void remove_startup_pids( const KStartupInfoId& id, const KStartupInfoData& data );
        void remove_startup_pids( const KStartupInfoData& data );
        startup_t check_startup_internal( WId w, KStartupInfoId* id, KStartupInfoData* data );
        bool find_id( const QCString& id_P, KStartupInfoId* id_O,
            KStartupInfoData* data_O );
        bool find_pid( pid_t pid_P, const QCString& hostname, KStartupInfoId* id_O,
            KStartupInfoData* data_O );
        bool find_wclass( QCString res_name_P, QCString res_class_P,
            KStartupInfoId* id_O, KStartupInfoData* data_O );
        static QCString get_window_hostname( WId w_P );
        void startups_cleanup_internal( bool age_P );
        void clean_all_noncompliant();
        static QString check_required_startup_fields( const QString& msg,
            const KStartupInfoData& data, int screen );
        bool clean_on_cantdetect_; // KDE4 remove unused
        unsigned int timeout;
        KStartupInfoPrivate* d;
    };

class KStartupInfoIdPrivate;

/**
 * Class representing an identification of application startup notification.
 *
 * Every existing notification about a starting application has its own unique
 * identification, that's used to identify and manipulate the notification.
 *
 * @see KStartupInfo
 * @see KStartupInfoData
 *
 * @author Lubos Lunak <l.lunak@kde.org>
 */
class KDECORE_EXPORT KStartupInfoId
    {
    public:
	/**
	 * Overloaded operator.
	 * @return true if the notification identifications are the same
	 */
        bool operator==( const KStartupInfoId& id ) const;
	/**
	 * Overloaded operator.
	 * @return true if the notification identifications are different
	 */
        bool operator!=( const KStartupInfoId& id ) const;
	/**
	 * Checks whether the identifier is valid.
	 * @return true if this object doesn't represent a valid notification identification
	 */
        bool none() const;
	/**
	 * Initializes this object with the given identification ( which may be also "0"
	 * for no notification ), or if "" is given, tries to read it from the startup
	 * notification environment variable, and if it's not set, creates a new one.
	 * @param id the new identification, "0" for no notification or "" to read
	 *           the environment variable
	 */
        void initId( const QCString& id = "" );
	/**
	 * Returns the notification identifier as string.
	 * @return the identification string for the notification
	 */
        const QCString& id() const;
        /**
         * Return the user timestamp for the startup notification, or 0 if no timestamp
         * is set.
         * @since 3.3
         */
        unsigned long timestamp() const;
	/**
	 * Sets the startup notification environment variable to this identification.
	 * @return true if successful, false otherwise
	 */
        bool setupStartupEnv() const;
	/**
	 * Creates an empty identification
	 */
        KStartupInfoId();
	/**
	 * Copy constructor.
	 */
        KStartupInfoId( const KStartupInfoId& data );
        ~KStartupInfoId();
        KStartupInfoId& operator=( const KStartupInfoId& data );
        bool operator<( const KStartupInfoId& id ) const;
    private:
        KStartupInfoId( const QString& txt );
        QString to_text() const;
        friend class KStartupInfo;
        KStartupInfoIdPrivate* d;
    };

class KStartupInfoDataPrivate;

/**
 * Class representing data about an application startup notification.
 *
 * Such data include the icon of the starting application, the desktop on which
 * the application should start, the binary name of the application, etc.
 *
 * @see KStartupInfo
 * @see KStartupInfoId
 *
 * @author Lubos Lunak <l.lunak@kde.org>
 */
class KDECORE_EXPORT KStartupInfoData
    {
    public:
	/**
	 * Sets the binary name of the application ( e.g. 'kcontrol' ).
	 * @param bin the new binary name of the application
	 */
        void setBin( const QString& bin );
	/**
	 * Returns the binary name of the starting application
	 * @return the new binary name of the application
	 */
        const QString& bin() const;
	/**
	 * Sets the name for the notification (e.g. 'Control Center')
	 */
        void setName( const QString& name );
	/**
	 * Returns the name of the startup notification. If it's not available,
         * it tries to use other information (binary name).
	 * @return the name of the startup notification
	 */
        const QString& findName() const;
	/**
	 * Returns the name of the startup notification, or empty if not available.
	 * @return the name of the startup notification, or an empty string
	 *         if not set.
	 */
        const QString& name() const;
	/**
	 * Sets the description for the notification (e.g. 'Launching Control Center').
         * I.e. name() describes what is being started, while description() is
         * the actual action performed by the starting.
         * @since 3.2
	 */
        void setDescription( const QString& descr );
	/**
	 * Returns the description of the startup notification. If it's not available,
         * it returns name().
	 * @return the description of the startup notification
         * @since 3.2
	 */
        const QString& findDescription() const;
	/**
	 * Returns the name of the startup notification, or empty if not available.
	 * @return the name of the startup notificaiton, or an empty string
	 *         if not set.
         * @since 3.2
	 */
        const QString& description() const;
	/**
	 * Sets the icon for the startup notification ( e.g. 'kcontrol' )
	 * @param icon the name of the icon
	 */
        void setIcon( const QString& icon );
	/**
	 * Returns the icon of the startup notification, and if it's not available,
	 * tries to get it from the binary name.
	 * @return the name of the startup notification's icon, or the name of
	 *         the binary if not set
	 */
        const QString& findIcon() const;
	/**
	 * Returns the icon of the startup notification, or empty if not available.
	 * @return the name of the icon, or an empty string if not set.
	 */
        const QString& icon() const;
	/**
	 * Sets the desktop for the startup notification ( i.e. the desktop on which
	 * the starting application should appear ).
	 * @param desktop the desktop for the startup notification
	 */
        void setDesktop( int desktop );
	/**
	 * Returns the desktop for the startup notification.
	 * @return the desktop for the startup notification
	 */
        int desktop() const;
	/**
	 * Sets a WM_CLASS value for the startup notification, it may be used for increasing
	 * the chance that the windows created by the starting application will be
	 * detected correctly.
	 * @param wmclass the WM_CLASS value for the startup notification
	 */
        void setWMClass( const QCString& wmclass );
	/**
	 * Returns the WM_CLASS value for the startup notification, or binary name if not
	 * available.
	 * @return the WM_CLASS value for the startup notification, or the binary name
	 *         if not set
	 */
        const QCString findWMClass() const;
	/**
	 * Returns the WM_CLASS value for the startup notification, or empty if not available.
	 * @return the WM_CLASS value for the startup notification, or empty
	 *         if not set
	 */
        const QCString& WMClass() const;
	/**
	 * Adds a PID to the list of processes that belong to the startup notification. It
	 * may be used to increase the chance that the windows created by the starting
	 * application will be detected correctly, and also for detecting if the application
	 * has quit without creating any window.
	 * @param pid the PID to add
	 */
        void addPid( pid_t pid );
	/**
	 * Returns all PIDs for the startup notification.
	 * @return the list of all PIDs
	 */
        const QValueList< pid_t >& pids() const;
	/**
	 * Checks whether the given @p pid is in the list of PIDs for starup
	 * notification.
	 * @return true if the given @p pid is in the list of PIDs for the startup notification
	 */
        bool is_pid( pid_t pid ) const;
	/**
	 * Sets the hostname on which the application is starting. It's necessary to set
	 * it if PIDs are set.
	 * @param hostname the application's hostname. If it's a null string, the current hostname is used
	 */
        void setHostname( const QCString& hostname = QCString());
	/**
	 * Returns the hostname for the startup notification.
	 * @return the hostname
	 */
        const QCString& hostname() const;
	
	/**
	 *
	 */
	enum TriState { Yes, No, Unknown };
	
	/**
	 * Sets whether the visual feedback for this startup notification
	 * should be silenced (temporarily suspended).
	 * @since 3.1.1
	 */
	void setSilent( TriState state );
	
	/**
	 * Return the silence status for the startup notification.
	 * @return KStartupInfoData::Yes if visual feedback is silenced
	 * @since 3.1.1
	 */
	TriState silent() const;
        
        /**
         * @obsolete Timestamp is already assigned in KStartupInfoId::initId().
         * Sets timestamp for the startup notification. The timestamp is expressed
         * as XServer time, and is used to prevent activation of the matching
         * window if user interaction took place after this timestamp.
         * Value -1 means no timestamp set, value 0 means that the window should
         * not be activated.
         */
        void setTimestamp( unsigned long time );
        
        /**
         * @obsolete Use KStartupInfoId::timestamp().
         * Return the timestamp for the startup notification, or -1 if no timestamp
         * is set.
         */
        unsigned long timestamp() const;
        
        /**
         * The X11 screen on which the startup notification is happening, -1 if unknown.
         */
        int screen() const;
        
        /**
         * Sets the X11 screen on which the startup notification should happen.
         * This is usually not necessary to set, as it's set by default to qt_xscreen().
         */
        void setScreen( int screen );
        
        /**
         * The Xinerama screen for the startup notification, -1 if unknown.
         */
        int xinerama() const;

        /**        
	 * Sets the Xinerama screen for the startup notification ( i.e. the screeen on which
	 * the starting application should appear ).
	 * @param xinerama the Xinerama screen for the startup notification
         */
        void setXinerama( int xinerama );

        /**
         * The toplevel window of the application that caused this startup notification,
         * 0 if unknown.
         */
        WId launchedBy() const;
        
        /**
	 * Sets the toplevel window of the application that caused this startup notification.
	 * @param window window ID of the toplevel window that is responsible for this startup
         */
        void setLaunchedBy( WId window );

	/**
	 * Updates the notification data from the given data. Some data, such as the desktop
	 * or the name, won't be rewritten if already set.
	 * @param data the data to update
	 */
        void update( const KStartupInfoData& data );

	/**
	 * Constructor. Initializes all the data to their default empty values.
	 */
        KStartupInfoData();

	/**
	 * Copy constructor.
	 */
        KStartupInfoData( const KStartupInfoData& data );
        ~KStartupInfoData();
        KStartupInfoData& operator=( const KStartupInfoData& data );
    private:
        KStartupInfoData( const QString& txt );
        QString to_text() const;
        void remove_pid( pid_t pid );
        friend class KStartupInfo;
        friend class KStartupInfo::Data;
        KStartupInfoDataPrivate* d;
    };

#endif //Q_WS_X11

#endif