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Diffstat (limited to 'ksysguard/gui/SensorDisplayLib/ProcessList.h')
| -rw-r--r-- | ksysguard/gui/SensorDisplayLib/ProcessList.h | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/ksysguard/gui/SensorDisplayLib/ProcessList.h b/ksysguard/gui/SensorDisplayLib/ProcessList.h new file mode 100644 index 000000000..b3f484484 --- /dev/null +++ b/ksysguard/gui/SensorDisplayLib/ProcessList.h @@ -0,0 +1,270 @@ +/* + KSysGuard, the KDE System Guard + + Copyright (c) 1999, 2000 Chris Schlaeger <cs@kde.org> + + This program is free software; you can redistribute it and/or + modify it under the terms of version 2 of the GNU General Public + License as published by the Free Software Foundation. + + 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. + + KSysGuard is currently maintained by Chris Schlaeger <cs@kde.org>. + Please do not commit any changes without consulting me + first. Thanks! + + */ + +#ifndef _ProcessList_h_ +#define _ProcessList_h_ + +#include <qdict.h> +#include <qdom.h> +#include <qstringlist.h> +#include <qvaluelist.h> +#include <qwidget.h> + +#include <kiconloader.h> +#include <klistview.h> + +#include "SensorClient.h" + +typedef const char* (*KeyFunc)(const char*); + +/** + * To support bi-directional sorting, and sorting of text, integers etc. we + * need a specialized version of QListViewItem. + */ +class ProcessLVI : public KListViewItem +{ +public: + ProcessLVI(QListView* lv) : KListViewItem(lv) { } + ProcessLVI(QListViewItem* lvi) : KListViewItem(lvi) { } + + virtual int compare( QListViewItem *item, int column, bool ) const; +}; + +class QPopupMenu; + +/** + * This class implementes a table filled with information about the running + * processes. The table is derived from QListView. + */ +class ProcessList : public KListView +{ + Q_OBJECT + +public: + // possible values for the filter mode + enum + { + FILTER_ALL = 0, + FILTER_SYSTEM, + FILTER_USER, + FILTER_OWN + }; + + enum ColumnType { Text, Int, Float, Time }; + + /// The constructor. + ProcessList(QWidget* parent = 0, const char* name = 0); + + /// The destructor. + ~ProcessList(); + + void removeColumns(); + + void addColumn(const QString& header, const QString& type); + + void setSortColumn(uint col, bool inc) + { + sortColumn = col; + increasing = inc; + setSorting(col, inc); + } + + uint getSortColumn() const + { + return sortColumn; + } + + bool getIncreasing() const + { + return increasing; + } + + const QValueList<int>& getSelectedPIds(); + const QStringList& getSelectedAsStrings(); + + /** + * The udpate function can be used to update the displayed process + * list. A current list of processes is requested from the OS. In + * case the list contains invalid or corrupted info, FALSE is + * returned. + */ + bool update(const QString& list); + + int columnType( uint col ) const; + + void setSensorOk(bool ok); + + void setKillSupported(bool supported) + { + killSupported = supported; + } + + bool load(QDomElement& el); + bool save(QDomDocument& doc, QDomElement& display); + +public slots: + void setTreeView(bool tv); + + /** + * This slot allows the filter mode to be set by other + * widgets. Possible values are FILTER_ALL, FILTER_SYSTEM, + * FILTER_USER and FILTER_OWN. This filter mechanism will be much + * more sophisticated in the future. + */ + void setFilterMode(int fm) + { + filterMode = fm; + setModified(true); + } + + void sortingChanged(int col); + + void handleRMBPressed(QListViewItem* lvi, const QPoint& p, int col); + + void sizeChanged(int, int, int) + { + setModified(true); + } + + void indexChanged(int, int, int) + { + setModified(true); + } + + virtual void setModified(bool mfd) + { + if (mfd != modified) + { + modified = mfd; + emit listModified(modified); + } + } + +signals: + // This signal is emitted when process pid should receive signal sig. + void killProcess(int pid, int sig); + + // This signal is emitted when process pid should be reniced. + void reniceProcess(const QValueList<int> &pids, int niceValue); + + void listModified(bool); + +private: + // items of table header RMB popup menu + enum + { + HEADER_REMOVE = 0, + HEADER_ADD, + HEADER_HELP + }; + + /** + * This function updates the lists of selected PID und the closed + * sub trees. + */ + void updateMetaInfo(void); + + /** + * This function determines whether a process matches the current + * filter mode or not. If it machtes the criteria it returns true, + * false otherwise. + */ + bool matchesFilter(KSGRD::SensorPSLine* p) const; + + /** + * This function constructs the list of processes for list + * mode. It's a straightforward appending operation to the + * QListView widget. + */ + void buildList(); + + /** + * This function constructs the tree of processes for tree mode. It + * filters out leaf-sub-trees that contain no processes that match + * the filter criteria. + */ + void buildTree(); + + /** + * This function deletes the leaf-sub-trees that do not match the + * filter criteria. + */ + void deleteLeaves(void); + + /** + * This function returns true if the process is a leaf process with + * respect to the other processes in the process list. It does not + * have to be a leaf process in the overall list of processes. + */ + bool isLeafProcess(int pid); + + /** + * This function is used to recursively construct the tree by + * removing processes from the process list an inserting them into + * the tree. + */ + void extendTree(QPtrList<KSGRD::SensorPSLine>* pl, ProcessLVI* parent, int ppid); + + /** + * This function adds a process to the list/tree. + */ + void addProcess(KSGRD::SensorPSLine* p, ProcessLVI* pli); + +private: + void selectAllItems(bool select); + void selectAllChilds(int pid, bool select); + + bool modified; + int filterMode; + int sortColumn; + bool increasing; + int refreshRate; + int currColumn; + bool killSupported; + bool treeViewEnabled; + bool openAll; + + /* The following lists are primarily used to store table specs between + * load() and the actual table creation in addColumn(). */ + QValueList<int> savedWidth; + QValueList<int> currentWidth; + QValueList<int> index; + + QPtrList<KSGRD::SensorPSLine> pl; + + QStringList mColumnTypes; + QDict<QString> columnDict; + + QValueList<int> selectedPIds; + QValueList<int> closedSubTrees; + QStringList selectedAsStrings; + + static QDict<QString> aliases; + + QDict<QPixmap> iconCache; + + QPopupMenu* headerPM; +}; + +#endif |