ui: file not up to date display

* the codeview now displays a hatched background for a filename when the file's content has changed or the file does not exist anymore.
* added TimePoint class to encapsulate boost.

src/lib/data/Storage.cpp

@@ -5,6 +5,7 @@
 
 #include "utility/file/FileSystem.h"
 #include "utility/logging/logging.h"
+#include "utility/TimePoint.h"
 #include "utility/utility.h"
 #include "utility/utilityString.h"
 
@@ -1219,6 +1220,11 @@ std::shared_ptr<TextAccess> Storage::getFileContent(const FilePath& filePath) co
 	return m_sqliteStorage.getFileContentByPath(filePath.str());
 }
 
+TimePoint Storage::getFileModificationTime(const FilePath& filePath) const
+{
+	return TimePoint(m_sqliteStorage.getFileByPath(filePath.str()).modificationTime);
+}
+
 Id Storage::addNodeHierarchy(Node::NodeType nodeType, NameHierarchy nameHierarchy, bool defined, bool distinct)
 {
 	std::vector<Id> nameIds = addNameHierarchyElements(nameHierarchy);

src/lib/data/Storage.h

@@ -161,8 +161,7 @@ public:
 	virtual std::shared_ptr<TokenLocationFile> getTokenLocationOfParentScope(const TokenLocation* child) const;
 
 	virtual std::shared_ptr<TextAccess> getFileContent(const FilePath& filePath) const;
-
-
+	virtual TimePoint getFileModificationTime(const FilePath& filePath) const;
 
 private:
 	Id addNodeHierarchy(Node::NodeType nodeType, NameHierarchy nameHierarchy, bool defined, bool distinct = false);

src/lib/data/access/StorageAccess.h

@@ -17,6 +17,7 @@ class TextAccess;
 class TokenLocation;
 class TokenLocationCollection;
 class TokenLocationFile;
+class TimePoint;
 
 class StorageAccess
 {
@@ -56,6 +57,7 @@ public:
 	virtual std::shared_ptr<TokenLocationFile> getTokenLocationOfParentScope(const TokenLocation* child) const = 0;
 
 	virtual std::shared_ptr<TextAccess> getFileContent(const FilePath& filePath) const = 0;
+	virtual TimePoint getFileModificationTime(const FilePath& filePath) const = 0;
 };
 
 #endif // STORAGE_ACCESS_H

src/lib/data/access/StorageAccessProxy.cpp

@@ -6,6 +6,7 @@
 
 #include "utility/logging/logging.h"
 #include "utility/file/FileInfo.h"
+#include "utility/TimePoint.h"
 
 StorageAccessProxy::StorageAccessProxy()
 	: m_subject(nullptr)
@@ -243,3 +244,13 @@ std::shared_ptr<TextAccess> StorageAccessProxy::getFileContent(const FilePath& f
 
 	return nullptr;
 }
+
+TimePoint StorageAccessProxy::getFileModificationTime(const FilePath& filePath) const
+{
+	if (hasSubject())
+	{
+		return m_subject->getFileModificationTime(filePath);
+	}
+
+	return TimePoint(boost::posix_time::not_a_date_time);
+}

src/lib/data/access/StorageAccessProxy.h

@@ -47,6 +47,7 @@ public:
 	virtual std::shared_ptr<TokenLocationFile> getTokenLocationOfParentScope(const TokenLocation* child) const;
 
 	virtual std::shared_ptr<TextAccess> getFileContent(const FilePath& filePath) const;
+	virtual TimePoint getFileModificationTime(const FilePath& filePath) const;
 
 private:
 	StorageAccess* m_subject;