Index: projectui/src/org/netbeans/modules/project/ui/OpenProjectList.java
===================================================================
RCS file: /cvs/projects/projectui/src/org/netbeans/modules/project/ui/OpenProjectList.java,v
retrieving revision 1.31
diff -u -r1.31 OpenProjectList.java
--- projectui/src/org/netbeans/modules/project/ui/OpenProjectList.java	12 Apr 2005 12:27:08 -0000	1.31
+++ projectui/src/org/netbeans/modules/project/ui/OpenProjectList.java	4 May 2005 15:11:42 -0000
@@ -45,6 +45,7 @@
 import org.openide.filesystems.URLMapper;
 import org.openide.loaders.DataObject;
 import org.openide.loaders.DataObjectNotFoundException;
+import org.openide.util.Lookup;
 
 /**
  * List of projects open in the GUI.
@@ -398,8 +399,11 @@
     
     
     private static void notifyOpened(Project p) {
-        ProjectOpenedHook hook = (ProjectOpenedHook)p.getLookup().lookup(ProjectOpenedHook.class);
-        if (hook != null) {
+        Lookup.Result result = p.getLookup().lookup(new Lookup.Template(ProjectOpenedHook.class));
+        
+        for (Iterator i = result.allInstances().iterator(); i.hasNext(); ) {
+            ProjectOpenedHook hook = (ProjectOpenedHook) i.next();
+            
             try {
                 ProjectOpenedTrampoline.DEFAULT.projectOpened(hook);
             } catch (RuntimeException e) {
@@ -409,8 +413,11 @@
     }
     
     private static void notifyClosed(Project p) {
-        ProjectOpenedHook hook = (ProjectOpenedHook)p.getLookup().lookup(ProjectOpenedHook.class);
-        if (hook != null) {
+        Lookup.Result result = p.getLookup().lookup(new Lookup.Template(ProjectOpenedHook.class));
+        
+        for (Iterator i = result.allInstances().iterator(); i.hasNext(); ) {
+            ProjectOpenedHook hook = (ProjectOpenedHook) i.next();
+            
             try {
                 ProjectOpenedTrampoline.DEFAULT.projectClosed(hook);
             } catch (RuntimeException e) {
Index: projectui/test/unit/src/org/netbeans/modules/project/ui/OpenProjectListTest.java
===================================================================
RCS file: /cvs/projects/projectui/test/unit/src/org/netbeans/modules/project/ui/OpenProjectListTest.java,v
retrieving revision 1.3
diff -u -r1.3 OpenProjectListTest.java
--- projectui/test/unit/src/org/netbeans/modules/project/ui/OpenProjectListTest.java	5 Apr 2005 07:53:58 -0000	1.3
+++ projectui/test/unit/src/org/netbeans/modules/project/ui/OpenProjectListTest.java	4 May 2005 15:11:42 -0000
@@ -30,6 +30,7 @@
 import org.netbeans.junit.NbTestCase;
 import org.netbeans.modules.project.ui.actions.TestSupport;
 import org.netbeans.spi.project.SubprojectProvider;
+import org.netbeans.spi.project.ui.ProjectOpenedHook;
 import org.openide.filesystems.FileObject;
 import org.openide.filesystems.FileStateInvalidException;
 import org.openide.filesystems.FileUtil;
@@ -156,6 +157,26 @@
         assertFalse ("Project2 is closed.", OpenProjectList.getDefault ().isOpen (project2));
     }
     
+    public void testProjectOpenedClosed() throws Exception {
+        ((TestSupport.TestProject) project1).setLookup(Lookups.fixed(new Object[] {
+            new TestProjectOpenedHookImpl(),
+            new TestProjectOpenedHookImpl(),
+        }));
+        
+        TestProjectOpenedHookImpl.opened = 0;
+        TestProjectOpenedHookImpl.closed = 0;
+        
+        OpenProjectList.getDefault().open(project1);
+        
+        assertEquals("both open hooks were called", 2, TestProjectOpenedHookImpl.opened);
+        assertEquals("no close hook was called", 0, TestProjectOpenedHookImpl.closed);
+        
+        OpenProjectList.getDefault().close(new Project[] {project1});
+        
+        assertEquals("both open hooks were called", 2, TestProjectOpenedHookImpl.opened);
+        assertEquals("both close hooks were called", 2, TestProjectOpenedHookImpl.closed);
+    }
+    
     // helper code
 
     private static class MySubprojectProvider implements SubprojectProvider {
@@ -224,4 +245,18 @@
         }
     }
     
+    private static class TestProjectOpenedHookImpl extends ProjectOpenedHook {
+        
+        public static int opened = 0;
+        public static int closed = 0;
+        
+        protected void projectClosed() {
+            closed++;
+        }
+        
+        protected void projectOpened() {
+            opened++;
+        }
+        
+    }
 }
Index: projectuiapi/apichanges.xml
===================================================================
RCS file: /cvs/projects/projectuiapi/apichanges.xml,v
retrieving revision 1.7
diff -u -r1.7 apichanges.xml
--- projectuiapi/apichanges.xml	22 Jan 2005 22:10:50 -0000	1.7
+++ projectuiapi/apichanges.xml	4 May 2005 15:11:42 -0000
@@ -76,6 +76,30 @@
 
     <changes>
         
+        <change id="ProjectOpenedHook.fire-to-all">
+            <api name="general"/>
+            <summary>The <code>projectOpened</code> and <code>projectClosed</code> methods are called on
+                     all <code>ProjectOpenedHook</code> instances in the lookup.
+            </summary>
+            <version major="1" minor="3"/>
+            <date day="4" month="5" year="2005"/>
+            <author login="jlahoda"/>
+            <compatibility semantic="incompatible" source="compatible">
+                <p>
+                    This change is incompatible because a project type can return a lookup with several
+                    <code>ProjectOpenedHook</code>s and depend on only first one being notified on open/close.
+                    Such a code should be rewritten using <code>org.openide.util.lookup.Lookups.exclude</code>.
+                </p>
+            </compatibility>
+            <description>
+                <p>
+                    The <code>projectOpened</code> and <code>projectClosed</code> methods are called on
+                    all <code>ProjectOpenedHook</code> instances found in a project's lookup.
+                </p>
+            </description>
+            <issue number="57025" />
+        </change>
+        
         <change id="OpenProjects.open-close">
             <api name="general"/>
             <summary>Added open and close methods into <code>OpenProjects</code> class</summary>
Index: projectuiapi/src/org/netbeans/spi/project/ui/ProjectOpenedHook.java
===================================================================
RCS file: /cvs/projects/projectuiapi/src/org/netbeans/spi/project/ui/ProjectOpenedHook.java,v
retrieving revision 1.4
diff -u -r1.4 ProjectOpenedHook.java
--- projectuiapi/src/org/netbeans/spi/project/ui/ProjectOpenedHook.java	4 Jan 2005 20:40:50 -0000	1.4
+++ projectuiapi/src/org/netbeans/spi/project/ui/ProjectOpenedHook.java	4 May 2005 15:11:42 -0000
@@ -36,6 +36,7 @@
  * </p>
  * <p>
  * An instance should be placed into a project's lookup to register it.
+ * All instances found in the lookup will be notified on project open and close.
  * </p>
  * @see org.netbeans.api.project.Project#getLookup
  * @author Jesse Glick