OpenWithWindow: Fix crash at closing, and fix filtering

Following hrev44493, the way ShouldShowPose was used changed a bit,
to harmonize with type ahead filtering.

This updates OpenWithWindow to use a BRefFilter to do its
filtering rather than overloading ShouldShowPose.

src/kits/tracker/OpenWithWindow.cpp

@@ -648,6 +648,8 @@ OpenWithPoseView::InitDirentIterator(const entry_ref*)
 		HideBarberPole();
 		return NULL;
 	}
+	SetRefFilter(new OpenWithRefFilter(fIterator, entryList,
+		(fHaveCommonPreferredApp ? &fPreferredRef : 0)));
 	return fIterator;
 }
 
@@ -935,16 +937,25 @@ OpenWithPoseView::OpenWithRelationDescription(const Model* model,
 }
 
 
-bool
+//  #pragma mark -
-OpenWithPoseView::ShouldShowPose(const Model* model, const PoseInfo* poseInfo)
-{
-	OpenWithContainerWindow* window = ContainerWindow();
-	// filter for add_poses
-	if (!fIterator->CanOpenWithFilter(model, window->EntryList(),
-		fHaveCommonPreferredApp ? &fPreferredRef : 0))
-		return false;
 
-	return _inherited::ShouldShowPose(model, poseInfo);
+
+OpenWithRefFilter::OpenWithRefFilter(SearchForSignatureEntryList* iterator,
+	const BMessage *entryList, entry_ref* preferredRef)
+	:
+	fIterator(iterator),
+	fEntryList(entryList),
+	fPreferredRef(preferredRef)
+{
+}
+
+
+bool
+OpenWithRefFilter::Filter(const entry_ref* ref, BNode* node, stat_beos* st,
+	const char* filetype)
+{
+	Model *model = new Model(ref, true, true);
+	return fIterator->CanOpenWithFilter(model, fEntryList, fPreferredRef);
 }
 
 

src/kits/tracker/OpenWithWindow.h

@@ -252,8 +252,6 @@ class OpenWithPoseView : public BPoseView {
 			// override to add selecting the default handling app
 			// for selection
 
-		virtual bool ShouldShowPose(const Model*, const PoseInfo*);
-
 		virtual void Pulse();
 
 		virtual void KeyDown(const char* bytes, int32 count);
@@ -269,6 +267,21 @@ class OpenWithPoseView : public BPoseView {
 };
 
 
+class OpenWithRefFilter: public BRefFilter
+{
+	public:
+		OpenWithRefFilter(SearchForSignatureEntryList*, const BMessage*,
+			entry_ref*);
+		bool Filter(const entry_ref* ref, BNode* node, stat_beos* st,
+			const char* filetype);
+
+	private:
+		SearchForSignatureEntryList* fIterator;
+		const BMessage *fEntryList;
+		entry_ref* fPreferredRef;
+};
+
+
 class RelationCachingModelProxy {
 	public:
 		RelationCachingModelProxy(Model* model);