- introduced a SystemInfoHandler class used to watch for stuff when polling isn't needed.

- used it to add a count of running apps (not exactly the same as teams).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25012 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/activitymonitor/DataSource.cpp

@@ -21,6 +21,7 @@ const DataSource* kSources[] = {
 	new PortsDataSource(),
 	new ThreadsDataSource(),
 	new TeamsDataSource(),
+	new RunningAppsDataSource(),
 	new CPUUsageDataSource(),
 	new CPUCombinedUsageDataSource(),
 	new NetworkUsageDataSource(true),
@@ -530,6 +531,53 @@ TeamsDataSource::AdaptiveScale() const
 //	#pragma mark -
 
 
+RunningAppsDataSource::RunningAppsDataSource()
+{
+	SystemInfo info;
+
+	fMinimum = 0;
+	fMaximum = info.MaxRunningApps();
+
+	fColor = (rgb_color){100, 150, 255};
+}
+
+
+RunningAppsDataSource::~RunningAppsDataSource()
+{
+}
+
+
+DataSource*
+RunningAppsDataSource::Copy() const
+{
+	return new RunningAppsDataSource(*this);
+}
+
+
+int64
+RunningAppsDataSource::NextValue(SystemInfo& info)
+{
+	return info.UsedRunningApps();
+}
+
+
+const char*
+RunningAppsDataSource::Label() const
+{
+	return "Running Applications";
+}
+
+
+bool
+RunningAppsDataSource::AdaptiveScale() const
+{
+	return true;
+}
+
+
+//	#pragma mark -
+
+
 CPUUsageDataSource::CPUUsageDataSource(int32 cpu)
 	:
 	fPreviousActive(0),