From b83fa2d5168cae14dbf74a7de74446d33fdf7524 Mon Sep 17 00:00:00 2001
From: Silenio Quarti <silenio_quarti@ca.ibm.com>
Date: Mon, 15 Oct 2012 14:04:34 +0530
Subject: Bug 380966-Tree crash calling OS.object_getInstanceVariable()

---
 .../internal/cocoa/FoundationFull.bridgesupport.extras    |  3 +++
 .../cocoa/org/eclipse/swt/internal/cocoa/NSObject.java    |  6 +++++-
 .../cocoa/org/eclipse/swt/widgets/Display.java            |  3 +++
 .../Eclipse SWT/cocoa/org/eclipse/swt/widgets/Tree.java   | 12 +++---------
 .../cocoa/org/eclipse/swt/widgets/TreeItem.java           | 15 +++++++++++++--
 .../Eclipse SWT/cocoa/org/eclipse/swt/widgets/Widget.java |  4 ++++
 6 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/FoundationFull.bridgesupport.extras b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/FoundationFull.bridgesupport.extras
index 7b1602cdb9..640b813dbb 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/FoundationFull.bridgesupport.extras	
+++ b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/FoundationFull.bridgesupport.extras	
@@ -774,6 +774,9 @@
 		<method selector="copy" swt_gen="true">
 			<retval swt_gen="true"></retval>
 		</method>
+		<method selector="dealloc" swt_gen="true">
+			<retval swt_gen="true"></retval>
+		</method>
 		<method selector="description" swt_gen="true">
 			<retval swt_gen="true"></retval>
 		</method>
diff --git a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/NSObject.java b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/NSObject.java
index fe68483433..4e502c3d0c 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/NSObject.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/NSObject.java	
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * Copyright (c) 2000, 2012 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -121,6 +121,10 @@ public id copy() {
 	return result != 0 ? new id(result) : null;
 }
 
+public void dealloc () {
+	OS.objc_msgSend (this.id, OS.sel_dealloc);
+}
+
 public NSString description() {
 	long /*int*/ result = OS.objc_msgSend(this.id, OS.sel_description);
 	return result != 0 ? new NSString(result) : null;
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Display.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Display.java
index 7706c173b9..038bab63bd 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Display.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Display.java	
@@ -2849,6 +2849,7 @@ void initClasses () {
 	className = "SWTTreeItem";
 	cls = OS.objc_allocateClassPair(OS.class_NSObject, className, 0);
 	OS.class_addIvar(cls, SWT_OBJECT, size, (byte)align, types);
+	OS.class_addMethod(cls, OS.sel_dealloc, proc2, "@:");
 	OS.objc_registerClassPair(cls);
 
 	className = "SWTView";
@@ -5358,6 +5359,8 @@ static long /*int*/ windowProc(long /*int*/ id, long /*int*/ sel) {
 	if (widget == null) return 0;
 	if (sel == OS.sel_sendSelection) {
 		widget.sendSelection();
+	} else if (sel == OS.sel_dealloc) {
+		widget.dealloc(id, sel);
 	} else if (sel == OS.sel_sendDoubleSelection) {
 		widget.sendDoubleSelection();
 	} else if (sel == OS.sel_sendVerticalSelection) {
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Tree.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Tree.java
index 871d7c2716..591e3caeb1 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Tree.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Tree.java	
@@ -2330,11 +2330,6 @@ void register () {
 }
 
 void releaseChildren (boolean destroy) {
-	itemCount = 0;
-	ignoreSelect = true;
-	((NSOutlineView) view).reloadData ();
-	ignoreSelect = false;
-
 	for (int i=0; i<items.length; i++) {
 		TreeItem item = items [i];
 		if (item != null && !item.isDisposed ()) {
@@ -2383,10 +2378,6 @@ void releaseWidget () {
  */
 public void removeAll () {
 	checkWidget ();
-	itemCount = 0;
-	ignoreSelect = true;
-	((NSOutlineView) view).reloadData ();
-	ignoreSelect = false;
 	for (int i=0; i<items.length; i++) {
 		TreeItem item = items [i];
 		if (item != null && !item.isDisposed ()) item.release (false);
@@ -2395,6 +2386,9 @@ public void removeAll () {
 	itemCount = 0;
 	imageBounds = null;
 	insertItem = null;
+	ignoreSelect = true;
+	((NSOutlineView) view).reloadData ();
+	ignoreSelect = false;
 	setScrollWidth ();
 }
 
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/TreeItem.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/TreeItem.java
index 95d25a4ce4..6421bcc696 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/TreeItem.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/TreeItem.java	
@@ -371,9 +371,20 @@ NSObject createString(int index) {
 	return NSString.stringWith(text != null ? text : "");
 }
 
+void dealloc (int /*long*/ id, int /*long*/ sel) {
+	super.dealloc(id, sel);
+	OS.object_setInstanceVariable(id, Display.SWT_OBJECT, 0);
+	super.destroyJNIRef();
+}
+
 void deregister () {
 	super.deregister ();
-	display.removeWidget (handle);
+	//This is done in #dealloc
+//	display.removeWidget (handle);
+}
+
+void destroyJNIRef () {
+	//Do nothing - see #dealloc
 }
 
 void destroyWidget () {
@@ -986,7 +997,7 @@ void releaseChildren (boolean destroy) {
 
 void releaseHandle () {
 	super.releaseHandle ();
-	if (handle != null) handle.release ();
+	if (handle != null) handle.autorelease ();
 	handle = null;
 	parentItem = null;
 	parent = null;
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Widget.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Widget.java
index 5a24c9a716..c5513fb7a2 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Widget.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Widget.java	
@@ -621,6 +621,10 @@ void comboBoxWillDismiss(long /*int*/ id, long /*int*/ sel, long /*int*/ notific
 void comboBoxWillPopUp(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
 }
 
+void dealloc (long /*int*/id, long /*int*/sel) {
+	callSuper (id, sel);
+}
+
 void deregister () {
 }
 
-- 
cgit