summaryrefslogtreecommitdiffstats
path: root/ksysguard/gui/SensorDisplayLib/ProcessList.h
blob: aac28a227587d274fafa9b08bcdd2b9d3207b476 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
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 <tqdict.h>
#include <tqdom.h>
#include <tqstringlist.h>
#include <tqvaluelist.h>
#include <tqwidget.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 TQListViewItem.
 */
class ProcessLVI : public KListViewItem
{
public:
	ProcessLVI(TQListView* lv) : KListViewItem(lv) { }
	ProcessLVI(TQListViewItem* lvi) : KListViewItem(lvi) { }

	virtual int compare( TQListViewItem *item, int column, bool ) const;
};

class QPopupMenu;

/**
 * This class implementes a table filled with information about the running
 * processes. The table is derived from TQListView.
 */
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(TQWidget* parent = 0, const char* name = 0);

	/// The destructor.
	~ProcessList();

	void removeColumns();

	void addColumn(const TQString& header, const TQString& 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 TQValueList<int>& getSelectedPIds();
	const TQStringList& 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 TQString& list);

	int columnType( uint col ) const;

	void setSensorOk(bool ok);

	void setKillSupported(bool supported)
	{
		killSupported = supported;
	}

	bool load(TQDomElement& el);
	bool save(TQDomDocument& doc, TQDomElement& 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(TQListViewItem* lvi, const TQPoint& 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 TQValueList<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
	 * TQListView 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(TQPtrList<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(). */
	TQValueList<int> savedWidth;
	TQValueList<int> currentWidth;
	TQValueList<int> index;

	TQPtrList<KSGRD::SensorPSLine> pl;

	TQStringList mColumnTypes;
	TQDict<TQString> columnDict;

	TQValueList<int> selectedPIds;
	TQValueList<int> closedSubTrees;
	TQStringList selectedAsStrings;

	static TQDict<TQString> aliases;

	TQDict<TQPixmap> iconCache;

	TQPopupMenu* headerPM;
};

#endif