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+/*
+ 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