Fix crashes

Author: Ravbug

source/FolderDisplay.hpp

@@ -17,8 +17,28 @@
 typedef function<void(float progress, DirectoryData* data)> progCallback;
 
 class FolderDisplay : public FolderDisplayBase{
+    DirectoryData* data = nullptr;
 public:
-	DirectoryData* data;
+    void Dealloc(){
+        delete data;
+        data = nullptr;
+    }
+    
+    void Recalculate(){
+        data->recalculateStats();
+    }
+    
+    decltype(DirectoryData::size) GetSize() const{
+        return data->size;
+    }
+    
+    const decltype(DirectoryData::Path)& GetPath() const{
+        return data->Path;
+    }
+    
+    void SetData(decltype(data) newptr){
+        data = newptr;
+    }
 
 	FolderDisplay(wxWindow*,wxWindow*, DirectoryData*);
 	~FolderDisplay();

source/interface_derived.cpp

@@ -101,7 +101,7 @@ MainFrame::MainFrame(wxWindow* parent) : MainFrameBase( parent )
  */
 void MainFrame::SizeRootFolder(const string& folder){
 	//deallocate existing data
-	delete currentDisplay[0]->data;
+	currentDisplay[0]->Dealloc();
 	//clear the log
 	logCtrl->SetValue("");
 	//hide the log
@@ -123,14 +123,14 @@ void MainFrame::SizeRootFolder(const string& folder){
 		wxPostEvent(this, event);
 	};
 	currentDisplay[0]->Clear();
-	currentDisplay[0]->data = new DirectoryData(folder, true);
+	currentDisplay[0]->SetData(new DirectoryData(folder, true));
 	wxDataViewItem i;
 
 	//reset viewing area
-//	for (int i = 1; i < currentDisplay.size(); i++){
-//		delete currentDisplay[i]->data;
-//		currentDisplay[i]->Destroy();
-//	}
+	for (int i = 1; i < currentDisplay.size(); i++){
+        currentDisplay[i]->Dealloc();
+		currentDisplay[i]->Destroy();
+	}
 	currentDisplay.erase(currentDisplay.begin()+1,currentDisplay.end());
 	//update sizer size
 	scrollSizer->SetCols(1);
@@ -244,10 +244,10 @@ void MainFrame::OnReloadFolder(wxCommandEvent& event){
 	int index = 0;
 	int parent_idx = 0;
 	for(FolderDisplay* disp : currentDisplay){
-		if (selected->parent != nullptr && disp->data->Path == selected->parent->Path){
+		if (selected->parent != nullptr && disp->GetPath() == selected->Path){
 			parent_idx = index;
 		}
-		if (disp->data->Path == selected->Path){
+		if (disp->GetPath() == selected->Path){
 			toReload = disp;
 			break;
 		}
@@ -257,7 +257,7 @@ void MainFrame::OnReloadFolder(wxCommandEvent& event){
 	//not opened? open it first
 	if (toReload == nullptr){
 		toReload = ChangeSelection(selected);
-		toReload->data = selected;
+		toReload->SetData(selected);
 	}
 
 	FolderDisplay* fdisp = currentDisplay[parent_idx];
@@ -302,7 +302,7 @@ void MainFrame::OnOpenFolder(wxCommandEvent& event){
 void MainFrame::OnExit(wxCommandEvent& event)
 {
 	//deallocate structure
-	delete currentDisplay[0]->data;
+    currentDisplay[0]->Dealloc();
 	Close( true );
 }
 /**
@@ -370,7 +370,7 @@ FolderDisplay* MainFrame::ChangeSelection(DirectoryData* sender){
 	//find where the sender is in the list
 	int idx;
 	for (idx = 0; idx < currentDisplay.size(); idx++){
-		if (currentDisplay[idx]->data->Path == sender->parent->Path){
+		if (currentDisplay[idx]->GetPath() == sender->parent->Path){
 			break;
 		}
 	}

source/interface_derived.h

@@ -44,12 +44,13 @@ class MainFrame : public MainFrameBase
 	void ProgressUpdate(int progress){
 		progressBar->SetValue(progress);
 		if (progress == 100){
-			currentDisplay[0]->data->recalculateStats();
+			currentDisplay[0]->Recalculate();
 			for (FolderDisplay* disp : currentDisplay){
 				disp->UpdateTitle();
 			}
 		}
-		UpdateTitlebar(progress, FolderDisplay::sizeToString(currentDisplay[0]->data->size));
+        fileSize size = currentDisplay[0]->GetSize();
+		UpdateTitlebar(progress, FolderDisplay::sizeToString(size));
 	}
 
 	FolderDisplay* AddDisplay(DirectoryData* model){
@@ -124,7 +125,7 @@ class MainFrame : public MainFrameBase
 		}
 	}
 	void UpdateTitlebar(int prog, const string& size) {
-		SetTitle(AppName + " v" + AppVersion + " - Sizing " + to_string(prog) + "% " + currentDisplay[0]->data->Path + " [" + size + "]");
+		SetTitle(AppName + " v" + AppVersion + " - Sizing " + to_string(prog) + "% " + currentDisplay[0]->GetPath() + " [" + size + "]");
 	}
 	wxDECLARE_EVENT_TABLE();