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Diffstat (limited to 'qtermwidget/Session.h')
| -rw-r--r-- | qtermwidget/Session.h | 621 |
1 files changed, 621 insertions, 0 deletions
diff --git a/qtermwidget/Session.h b/qtermwidget/Session.h new file mode 100644 index 0000000..7b2ae25 --- /dev/null +++ b/qtermwidget/Session.h @@ -0,0 +1,621 @@ +/* + This file is part of Konsole, an X terminal. + + Copyright (C) 2007 by Robert Knight <robertknight@gmail.com> + Copyright (C) 1997,1998 by Lars Doelle <lars.doelle@on-line.de> + + Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301 USA. +*/ + +#ifndef SESSION_H +#define SESSION_H + +// Qt +#include <QtCore/QStringList> +#include <QtCore> +#include <QWidget> + +// Konsole +#include "History.h" + +class KProcess; + +namespace Konsole +{ + +class Emulation; +class Pty; +class TerminalDisplay; +//class ZModemDialog; + +/** + * Represents a terminal session consisting of a pseudo-teletype and a terminal emulation. + * The pseudo-teletype (or PTY) handles I/O between the terminal process and Konsole. + * The terminal emulation ( Emulation and subclasses ) processes the output stream from the + * PTY and produces a character image which is then shown on views connected to the session. + * + * Each Session can be connected to one or more views by using the addView() method. + * The attached views can then display output from the program running in the terminal + * or send input to the program in the terminal in the form of keypresses and mouse + * activity. + */ +class Session : public QObject +{ +Q_OBJECT + +public: + Q_PROPERTY(QString name READ nameTitle) + Q_PROPERTY(int processId READ processId) + Q_PROPERTY(QString keyBindings READ keyBindings WRITE setKeyBindings) + Q_PROPERTY(QSize size READ size WRITE setSize) + + /** + * Constructs a new session. + * + * To start the terminal process, call the run() method, + * after specifying the program and arguments + * using setProgram() and setArguments() + * + * If no program or arguments are specified explicitly, the Session + * falls back to using the program specified in the SHELL environment + * variable. + */ + Session(); + ~Session(); + + /** + * Returns true if the session is currently running. This will be true + * after run() has been called successfully. + */ + bool isRunning() const; + + /** + * Sets the profile associated with this session. + * + * @param profileKey A key which can be used to obtain the current + * profile settings from the SessionManager + */ + void setProfileKey(const QString& profileKey); + /** + * Returns the profile key associated with this session. + * This can be passed to the SessionManager to obtain the current + * profile settings. + */ + QString profileKey() const; + + /** + * Adds a new view for this session. + * + * The viewing widget will display the output from the terminal and + * input from the viewing widget (key presses, mouse activity etc.) + * will be sent to the terminal. + * + * Views can be removed using removeView(). The session is automatically + * closed when the last view is removed. + */ + void addView(TerminalDisplay* widget); + /** + * Removes a view from this session. When the last view is removed, + * the session will be closed automatically. + * + * @p widget will no longer display output from or send input + * to the terminal + */ + void removeView(TerminalDisplay* widget); + + /** + * Returns the views connected to this session + */ + QList<TerminalDisplay*> views() const; + + /** + * Returns the terminal emulation instance being used to encode / decode + * characters to / from the process. + */ + Emulation* emulation() const; + + /** + * Returns the environment of this session as a list of strings like + * VARIABLE=VALUE + */ + QStringList environment() const; + /** + * Sets the environment for this session. + * @p environment should be a list of strings like + * VARIABLE=VALUE + */ + void setEnvironment(const QStringList& environment); + + /** Returns the unique ID for this session. */ + int sessionId() const; + + /** + * Return the session title set by the user (ie. the program running + * in the terminal), or an empty string if the user has not set a custom title + */ + QString userTitle() const; + + /** + * This enum describes the contexts for which separate + * tab title formats may be specified. + */ + enum TabTitleContext + { + /** Default tab title format */ + LocalTabTitle, + /** + * Tab title format used session currently contains + * a connection to a remote computer (via SSH) + */ + RemoteTabTitle + }; + /** + * Sets the format used by this session for tab titles. + * + * @param context The context whoose format should be set. + * @param format The tab title format. This may be a mixture + * of plain text and dynamic elements denoted by a '%' character + * followed by a letter. (eg. %d for directory). The dynamic + * elements available depend on the @p context + */ + void setTabTitleFormat(TabTitleContext context , const QString& format); + /** Returns the format used by this session for tab titles. */ + QString tabTitleFormat(TabTitleContext context) const; + + + /** Returns the arguments passed to the shell process when run() is called. */ + QStringList arguments() const; + /** Returns the program name of the shell process started when run() is called. */ + QString program() const; + + /** + * Sets the command line arguments which the session's program will be passed when + * run() is called. + */ + void setArguments(const QStringList& arguments); + /** Sets the program to be executed when run() is called. */ + void setProgram(const QString& program); + + /** Returns the session's current working directory. */ + QString initialWorkingDirectory() { return _initialWorkingDir; } + + /** + * Sets the initial working directory for the session when it is run + * This has no effect once the session has been started. + */ + void setInitialWorkingDirectory( const QString& dir ); + + /** + * Sets the type of history store used by this session. + * Lines of output produced by the terminal are added + * to the history store. The type of history store + * used affects the number of lines which can be + * remembered before they are lost and the storage + * (in memory, on-disk etc.) used. + */ + void setHistoryType(const HistoryType& type); + /** + * Returns the type of history store used by this session. + */ + const HistoryType& historyType() const; + /** + * Clears the history store used by this session. + */ + void clearHistory(); + + /** + * Enables monitoring for activity in the session. + * This will cause notifySessionState() to be emitted + * with the NOTIFYACTIVITY state flag when output is + * received from the terminal. + */ + void setMonitorActivity(bool); + /** Returns true if monitoring for activity is enabled. */ + bool isMonitorActivity() const; + + /** + * Enables monitoring for silence in the session. + * This will cause notifySessionState() to be emitted + * with the NOTIFYSILENCE state flag when output is not + * received from the terminal for a certain period of + * time, specified with setMonitorSilenceSeconds() + */ + void setMonitorSilence(bool); + /** + * Returns true if monitoring for inactivity (silence) + * in the session is enabled. + */ + bool isMonitorSilence() const; + /** See setMonitorSilence() */ + void setMonitorSilenceSeconds(int seconds); + + /** + * Sets the key bindings used by this session. The bindings + * specify how input key sequences are translated into + * the character stream which is sent to the terminal. + * + * @param id The name of the key bindings to use. The + * names of available key bindings can be determined using the + * KeyboardTranslatorManager class. + */ + void setKeyBindings(const QString& id); + /** Returns the name of the key bindings used by this session. */ + QString keyBindings() const; + + /** + * This enum describes the available title roles. + */ + enum TitleRole + { + /** The name of the session. */ + NameRole, + /** The title of the session which is displayed in tabs etc. */ + DisplayedTitleRole + }; + + /** Sets the session's title for the specified @p role to @p title. */ + void setTitle(TitleRole role , const QString& title); + /** Returns the session's title for the specified @p role. */ + QString title(TitleRole role) const; + /** Convenience method used to read the name property. Returns title(Session::NameRole). */ + QString nameTitle() const { return title(Session::NameRole); } + + /** Sets the name of the icon associated with this session. */ + void setIconName(const QString& iconName); + /** Returns the name of the icon associated with this session. */ + QString iconName() const; + + /** Sets the text of the icon associated with this session. */ + void setIconText(const QString& iconText); + /** Returns the text of the icon associated with this session. */ + QString iconText() const; + + /** Specifies whether a utmp entry should be created for the pty used by this session. */ + void setAddToUtmp(bool); + + /** Sends the specified @p signal to the terminal process. */ + bool sendSignal(int signal); + + /** + * Specifies whether to close the session automatically when the terminal + * process terminates. + */ + void setAutoClose(bool b) { _autoClose = b; } + + /** + * Sets whether flow control is enabled for this terminal + * session. + */ + void setFlowControlEnabled(bool enabled); + + /** Returns whether flow control is enabled for this terminal session. */ + bool flowControlEnabled() const; + + /** + * Sends @p text to the current foreground terminal program. + */ + void sendText(const QString& text) const; + + /** + * Returns the process id of the terminal process. + * This is the id used by the system API to refer to the process. + */ + int processId() const; + + /** + * Returns the process id of the terminal's foreground process. + * This is initially the same as processId() but can change + * as the user starts other programs inside the terminal. + */ + int foregroundProcessId() const; + + /** Returns the terminal session's window size in lines and columns. */ + QSize size(); + /** + * Emits a request to resize the session to accommodate + * the specified window size. + * + * @param size The size in lines and columns to request. + */ + void setSize(const QSize& size); + + /** Sets the text codec used by this session's terminal emulation. */ + void setCodec(QTextCodec* codec); + + /** + * Sets whether the session has a dark background or not. The session + * uses this information to set the COLORFGBG variable in the process's + * environment, which allows the programs running in the terminal to determine + * whether the background is light or dark and use appropriate colors by default. + * + * This has no effect once the session is running. + */ + void setDarkBackground(bool darkBackground); + /** + * Returns true if the session has a dark background. + * See setDarkBackground() + */ + bool hasDarkBackground() const; + + /** + * Attempts to get the shell program to redraw the current display area. + * This can be used after clearing the screen, for example, to get the + * shell to redraw the prompt line. + */ + void refresh(); + +// void startZModem(const QString &rz, const QString &dir, const QStringList &list); +// void cancelZModem(); +// bool isZModemBusy() { return _zmodemBusy; } + +public slots: + + /** + * Starts the terminal session. + * + * This creates the terminal process and connects the teletype to it. + */ + void run(); + + /** + * Closes the terminal session. This sends a hangup signal + * (SIGHUP) to the terminal process and causes the done(Session*) + * signal to be emitted. + */ + void close(); + + /** + * Changes the session title or other customizable aspects of the terminal + * emulation display. For a list of what may be changed see the + * Emulation::titleChanged() signal. + */ + void setUserTitle( int, const QString &caption ); + +signals: + + /** Emitted when the terminal process starts. */ + void started(); + + /** + * Emitted when the terminal process exits. + */ + void finished(); + + /** + * Emitted when output is received from the terminal process. + */ + void receivedData( const QString& text ); + + /** Emitted when the session's title has changed. */ + void titleChanged(); + + /** Emitted when the session's profile has changed. */ + void profileChanged(const QString& profile); + + /** + * Emitted when the activity state of this session changes. + * + * @param state The new state of the session. This may be one + * of NOTIFYNORMAL, NOTIFYSILENCE or NOTIFYACTIVITY + */ + void stateChanged(int state); + + /** Emitted when a bell event occurs in the session. */ + void bellRequest( const QString& message ); + + /** + * Requests that the color the text for any tabs associated with + * this session should be changed; + * + * TODO: Document what the parameter does + */ + void changeTabTextColorRequest(int); + + /** + * Requests that the background color of views on this session + * should be changed. + */ + void changeBackgroundColorRequest(const QColor&); + + /** TODO: Document me. */ + void openUrlRequest(const QString& url); + + /** TODO: Document me. */ +// void zmodemDetected(); + + /** + * Emitted when the terminal process requests a change + * in the size of the terminal window. + * + * @param size The requested window size in terms of lines and columns. + */ + void resizeRequest(const QSize& size); + + /** + * Emitted when a profile change command is received from the terminal. + * + * @param text The text of the command. This is a string of the form + * "PropertyName=Value;PropertyName=Value ..." + */ + void profileChangeCommandReceived(const QString& text); + + /** + * Emitted when the flow control state changes. + * + * @param enabled True if flow control is enabled or false otherwise. + */ + void flowControlEnabledChanged(bool enabled); + +private slots: + void done(int); + +// void fireZModemDetected(); + + void onReceiveBlock( const char* buffer, int len ); + void monitorTimerDone(); + + void onViewSizeChange(int height, int width); + void onEmulationSizeChange(int lines , int columns); + + void activityStateSet(int); + + //automatically detach views from sessions when view is destroyed + void viewDestroyed(QObject* view); + +// void zmodemReadStatus(); +// void zmodemReadAndSendBlock(); +// void zmodemRcvBlock(const char *data, int len); +// void zmodemFinished(); + +private: + + void updateTerminalSize(); + WId windowId() const; + + int _uniqueIdentifier; + + Pty* _shellProcess; + Emulation* _emulation; + + QList<TerminalDisplay*> _views; + + bool _monitorActivity; + bool _monitorSilence; + bool _notifiedActivity; + bool _masterMode; + bool _autoClose; + bool _wantedClose; + QTimer* _monitorTimer; + + int _silenceSeconds; + + QString _nameTitle; + QString _displayTitle; + QString _userTitle; + + QString _localTabTitleFormat; + QString _remoteTabTitleFormat; + + QString _iconName; + QString _iconText; // as set by: echo -en '\033]1;IconText\007 + bool _addToUtmp; + bool _flowControl; + bool _fullScripting; + + QString _program; + QStringList _arguments; + + QStringList _environment; + int _sessionId; + + QString _initialWorkingDir; + + // ZModem +// bool _zmodemBusy; +// KProcess* _zmodemProc; +// ZModemDialog* _zmodemProgress; + + // Color/Font Changes by ESC Sequences + + QColor _modifiedBackground; // as set by: echo -en '\033]11;Color\007 + + QString _profileKey; + + bool _hasDarkBackground; + + static int lastSessionId; + +}; + +/** + * Provides a group of sessions which is divided into master and slave sessions. + * Activity in master sessions can be propagated to all sessions within the group. + * The type of activity which is propagated and method of propagation is controlled + * by the masterMode() flags. + */ +class SessionGroup : public QObject +{ +Q_OBJECT + +public: + /** Constructs an empty session group. */ + SessionGroup(); + /** Destroys the session group and removes all connections between master and slave sessions. */ + ~SessionGroup(); + + /** Adds a session to the group. */ + void addSession( Session* session ); + /** Removes a session from the group. */ + void removeSession( Session* session ); + + /** Returns the list of sessions currently in the group. */ + QList<Session*> sessions() const; + + /** + * Sets whether a particular session is a master within the group. + * Changes or activity in the group's master sessions may be propagated + * to all the sessions in the group, depending on the current masterMode() + * + * @param session The session whoose master status should be changed. + * @param master True to make this session a master or false otherwise + */ + void setMasterStatus( Session* session , bool master ); + /** Returns the master status of a session. See setMasterStatus() */ + bool masterStatus( Session* session ) const; + + /** + * This enum describes the options for propagating certain activity or + * changes in the group's master sessions to all sessions in the group. + */ + enum MasterMode + { + /** + * Any input key presses in the master sessions are sent to all + * sessions in the group. + */ + CopyInputToAll = 1 + }; + + /** + * Specifies which activity in the group's master sessions is propagated + * to all sessions in the group. + * + * @param mode A bitwise OR of MasterMode flags. + */ + void setMasterMode( int mode ); + /** + * Returns a bitwise OR of the active MasterMode flags for this group. + * See setMasterMode() + */ + int masterMode() const; + +private: + void connectPair(Session* master , Session* other); + void disconnectPair(Session* master , Session* other); + void connectAll(bool connect); + QList<Session*> masters() const; + + // maps sessions to their master status + QHash<Session*,bool> _sessions; + + int _masterMode; +}; + +} + +#endif |