From f8db67f5e6ef22a2768e856d60a653b792f02385 Mon Sep 17 00:00:00 2001
From: Christian Georgi
Date: Tue, 21 Feb 2012 14:06:10 -0600
Subject: Bug 371981 - Make IToggleBreakpointsTargetExtension2 usable for
 clients compiled against older Eclipse versions

---
 .../ui/actions/IToggleBreakpointsTargetExtension2.java    |  2 +-
 .../eclipse/debug/ui/actions/ToggleBreakpointAction.java  | 15 +++++++++------
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/IToggleBreakpointsTargetExtension2.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/IToggleBreakpointsTargetExtension2.java
index 6bec4561c..7d3c0cef7 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/IToggleBreakpointsTargetExtension2.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/IToggleBreakpointsTargetExtension2.java
@@ -22,7 +22,7 @@ import org.eclipse.ui.IWorkbenchPart;
  * when the user double-clicks in the vertical ruler. 
  * <p>
  * Clients implementing <code>IToggleBreakpointsTarget</code> or <code>IToggleBreakpointsTargetExtension</code> may optionally
- * implement this interface.
+ * implement or adapt to this interface.
  * </p>
  * @since 3.8
  * @see org.eclipse.debug.ui.actions.ToggleBreakpointAction
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ToggleBreakpointAction.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ToggleBreakpointAction.java
index 30624bdf7..d15da736e 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ToggleBreakpointAction.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ToggleBreakpointAction.java
@@ -12,6 +12,7 @@
 package org.eclipse.debug.ui.actions;
 
 import org.eclipse.core.runtime.CoreException;
+import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.internal.ui.DebugUIPlugin;
 import org.eclipse.debug.internal.ui.actions.ActionMessages;
 import org.eclipse.debug.internal.ui.actions.ToggleBreakpointsTargetManager;
@@ -103,17 +104,19 @@ public class ToggleBreakpointAction extends Action implements IUpdate {
 					ITextSelection selection = getTextSelection(document, line);
 					IToggleBreakpointsTarget target = DebugUITools.getToggleBreakpointsTargetManager().getToggleBreakpointsTarget(fPart, selection);
 					if (target != null) {
-						if(target instanceof IToggleBreakpointsTargetExtension2) {
-							IToggleBreakpointsTargetExtension2 ext = (IToggleBreakpointsTargetExtension2) target;
+						IToggleBreakpointsTargetExtension2 ext = (IToggleBreakpointsTargetExtension2) 
+								DebugPlugin.getAdapter(target, IToggleBreakpointsTargetExtension2.class);
+						if (ext != null) {
 							if(ext.canToggleBreakpointsWithEvent(fPart, selection, event)) {
 								ext.toggleBreakpointsWithEvent(fPart, selection, event);
 								return;
 							}
 						}
-						if (target instanceof IToggleBreakpointsTargetExtension) {
-						    IToggleBreakpointsTargetExtension extension = (IToggleBreakpointsTargetExtension) target;
-							if (extension.canToggleBreakpoints(fPart, selection)) {
-								extension.toggleBreakpoints(fPart, selection);
+						IToggleBreakpointsTargetExtension ext2 = (IToggleBreakpointsTargetExtension) 
+								DebugPlugin.getAdapter(target, IToggleBreakpointsTargetExtension.class);
+						if(ext2 != null) {
+							if (ext2.canToggleBreakpoints(fPart, selection)) {
+								ext2.toggleBreakpoints(fPart, selection);
 								return;
 							}
 						}
-- 
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