sys: Clean up properly after file is closed

Addresses another issue in #362

source/views/view_bookmarks.cpp

@@ -37,12 +37,17 @@ namespace hex {
         EventManager::subscribe<EventProjectFileStore>(this, []{
             ProjectFile::setBookmarks(SharedData::bookmarkEntries);
         });
+
+        EventManager::subscribe<EventFileUnloaded>(this, []{
+            ImHexApi::Bookmarks::getEntries().clear();
+        });
     }
 
     ViewBookmarks::~ViewBookmarks() {
         EventManager::unsubscribe<RequestAddBookmark>(this);
         EventManager::unsubscribe<EventProjectFileLoad>(this);
         EventManager::unsubscribe<EventProjectFileStore>(this);
+        EventManager::unsubscribe<EventFileUnloaded>(this);
     }
 
     void ViewBookmarks::drawContent() {

source/views/view_disassembler.cpp

@@ -27,11 +27,16 @@ namespace hex {
                 }
             }
         });
+
+        EventManager::subscribe<EventFileUnloaded>(this, [this]{
+            this->m_disassembly.clear();
+        });
     }
 
     ViewDisassembler::~ViewDisassembler() {
         EventManager::unsubscribe<EventDataChanged>(this);
         EventManager::unsubscribe<EventRegionSelected>(this);
+        EventManager::unsubscribe<EventFileUnloaded>(this);
     }
 
     void ViewDisassembler::disassemble() {

source/views/view_information.cpp

@@ -39,11 +39,16 @@ namespace hex {
             if (this->m_blockSize != 0)
                 this->m_entropyHandlePosition = region.address / this->m_blockSize;
         });
+
+        EventManager::subscribe<EventFileUnloaded>(this, [this]{
+            this->m_dataValid = false;
+        });
     }
 
     ViewInformation::~ViewInformation() {
         EventManager::unsubscribe<EventDataChanged>(this);
         EventManager::unsubscribe<EventRegionSelected>(this);
+        EventManager::unsubscribe<EventFileUnloaded>(this);
     }
 
     static float calculateEntropy(std::array<ImU64, 256> &valueCounts, size_t numBytes) {

source/views/view_pattern_editor.cpp

@@ -152,6 +152,11 @@ namespace hex {
             }
         });
 
+        EventManager::subscribe<EventFileUnloaded>(this, [this]{
+            this->m_textEditor.SetText("");
+            this->m_patternLanguageRuntime->abort();
+        });
+
         /* Settings */
         {
 
@@ -181,6 +186,7 @@ namespace hex {
         EventManager::unsubscribe<RequestSetPatternLanguageCode>(this);
         EventManager::unsubscribe<EventFileLoaded>(this);
         EventManager::unsubscribe<RequestChangeTheme>(this);
+        EventManager::unsubscribe<EventFileUnloaded>(this);
     }
 
     void ViewPatternEditor::drawMenu() {

source/views/view_strings.cpp

@@ -21,10 +21,15 @@ namespace hex {
 
         this->m_filter.reserve(0xFFFF);
         std::memset(this->m_filter.data(), 0x00, this->m_filter.capacity());
+
+        EventManager::subscribe<EventFileUnloaded>(this, [this]{
+            this->m_foundStrings.clear();
+        });
     }
 
     ViewStrings::~ViewStrings() {
         EventManager::unsubscribe<EventDataChanged>(this);
+        EventManager::unsubscribe<EventFileUnloaded>(this);
     }
 
     std::string readString(const FoundString &foundString) {