X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=plugins%2Fnet.mograsim.plugin.core%2Fsrc%2Fnet%2Fmograsim%2Fplugin%2Fnature%2FProjectMachineContext.java;h=cf727af2fc81fd4b211322db05ac50c731b52b0f;hb=15020b7263b6edd100d4b0a5de317e9eaff05c27;hp=0e6185c410045ad5d5fcf0a8c385700de556f02d;hpb=34c9da2d7580f2312da458db619dcf36e6325cef;p=Mograsim.git

diff --git a/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/nature/ProjectMachineContext.java b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/nature/ProjectMachineContext.java
index 0e6185c4..cf727af2 100644
--- a/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/nature/ProjectMachineContext.java
+++ b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/nature/ProjectMachineContext.java
@@ -2,20 +2,27 @@ package net.mograsim.plugin.nature;
 
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.Set;
 
 import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResourceChangeEvent;
 import org.eclipse.core.resources.ProjectScope;
+import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.Adapters;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IAdaptable;
 import org.eclipse.ui.preferences.ScopedPreferenceStore;
 
+import net.mograsim.plugin.nature.ProjectContextEvent.ProjectContextEventType;
+
 public class ProjectMachineContext
 {
 	private static Map<IProject, MachineContext> projectMachineContexts = Collections.synchronizedMap(new HashMap<>());
+	private static final Set<ProjectContextListener> listeners = Collections.synchronizedSet(new HashSet<>());
 
 	public static final String MOGRASIM_PROJECT_PREFS_NODE = "net.mograsim";
 	public static final String MACHINE_PROPERTY = "net.mograsim.projectMachineId";
@@ -28,6 +35,7 @@ public class ProjectMachineContext
 		validateMograsimNatureProject(project);
 		mc = new MachineContext(project);
 		projectMachineContexts.put(project, mc);
+		notifyListeners(new ProjectContextEvent(mc, ProjectContextEventType.NEW));
 		return mc;
 	}
 
@@ -38,6 +46,11 @@ public class ProjectMachineContext
 		return getMachineContextOf(project);
 	}
 
+	public static Map<IProject, MachineContext> getAllProjectMachineContexts()
+	{
+		return Collections.unmodifiableMap(projectMachineContexts);
+	}
+
 	static ScopedPreferenceStore getProjectPrefs(IProject mograsimProject)
 	{
 		return new ScopedPreferenceStore(new ProjectScope(mograsimProject), MOGRASIM_PROJECT_PREFS_NODE);
@@ -88,4 +101,38 @@ public class ProjectMachineContext
 			return Optional.of(preferenceStore.getString(MACHINE_PROPERTY));
 		return Optional.empty();
 	}
+
+	static void notifyListeners(ProjectContextEvent projectContextEvent)
+	{
+		listeners.forEach(l -> l.onProjectContextChange(projectContextEvent));
+	}
+
+	public static void addProjectContextListener(ProjectContextListener listener)
+	{
+		listeners.add(listener);
+	}
+
+	public static void removeProjectContextListener(ProjectContextListener listener)
+	{
+		listeners.remove(listener);
+	}
+
+	static
+	{
+		ResourcesPlugin.getWorkspace().addResourceChangeListener(ProjectMachineContext::resourceChanged);
+	}
+
+	private static void resourceChanged(IResourceChangeEvent event)
+	{
+		ProjectContextEventType eventType = ProjectContextEventType.ofResourceChangeEvent(event.getType());
+		if (eventType == null)
+			return;
+		IProject p = event.getResource().getProject();
+		if (p == null)
+			return;
+		MachineContext mc = projectMachineContexts.get(p);
+		if (mc == null)
+			return;
+		notifyListeners(new ProjectContextEvent(mc, eventType));
+	}
 }