From 0312bc5985da332ebbf702435f2e176da4febc25 Mon Sep 17 00:00:00 2001
From: mbaudier <mbaudier@europe>
Date: Tue, 3 Jul 2018 11:21:06 +0200
Subject: [PATCH] Properly cancel dialog by thread death

---
 .../eclipse/ui/dialogs/LightweightDialog.java | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/dialogs/LightweightDialog.java b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/dialogs/LightweightDialog.java
index a923b0134..cc8a830bf 100644
--- a/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/dialogs/LightweightDialog.java
+++ b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/dialogs/LightweightDialog.java
@@ -95,6 +95,8 @@ public class LightweightDialog {
 
 			@Override
 			public void shellDeactivated(ShellEvent e) {
+				if (hasChildShells())
+					return;
 				if (returnCode == null)// not yet closed
 					closeShell(CANCEL);
 			}
@@ -118,6 +120,8 @@ public class LightweightDialog {
 
 			@Override
 			public void focusGained(FocusEvent event) {
+				if (hasChildShells())
+					return;
 				if (returnCode == null)// not yet closed
 					closeShell(CANCEL);
 			}
@@ -126,7 +130,12 @@ public class LightweightDialog {
 		if (block) {
 			try {
 				runEventLoop(foregoundShell);
+			} catch (ThreadDeath t) {
+				returnCode = CANCEL;
+				if (log.isTraceEnabled())
+					log.error("Thread death, canceling dialog", t);
 			} catch (Throwable t) {
+				returnCode = CANCEL;
 				log.error("Cannot open blocking lightweight dialog", t);
 			}
 		}
@@ -135,6 +144,12 @@ public class LightweightDialog {
 		return returnCode;
 	}
 
+	private boolean hasChildShells() {
+		if (foregoundShell == null)
+			return false;
+		return foregoundShell.getShells().length != 0;
+	}
+
 	// public synchronized int openAndWait() {
 	// open();
 	// while (returnCode == null)
@@ -240,4 +255,8 @@ public class LightweightDialog {
 			getForegoundShell().setText(title);
 	}
 
+	public Integer getReturnCode() {
+		return returnCode;
+	}
+
 }
\ No newline at end of file
-- 
2.30.2