1c29b26e7c
Similar to stored queries, files of the virtual directory type behave like directories -- i.e. they open in a list-mode Tracker window and show up as an item with submenu in navigation menus. The file itself is a plain text file in driver settings format. It can have an arbitrary number of "directory" entries, which specify the paths of (actual) directories for which the virtual directory provides a merged view. The view will not show duplicate entries. For non-directory entries the first one encountered (according to the order the directory paths are specified in the file) will be shown. A subdirectory entry will again behave like a virtual directory. The support in Tracker isn't perfect yet. I'm afraid major refactoring would be necessary to get it there. The virtual directory file type uses a differently colored version of the folder icon. Alternatives welcome.
118 lines
2.9 KiB
C++
118 lines
2.9 KiB
C++
/*
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* Copyright 2013, Haiku, Inc.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Ingo Weinhold, ingo_weinhold@gmx.de
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*/
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#ifndef VIRTUAL_DIRECTORY_MANAGER_H
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#define VIRTUAL_DIRECTORY_MANAGER_H
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#include <dirent.h>
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#include <map>
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#include <Locker.h>
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#include <Node.h>
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class BStringList;
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namespace BPrivate {
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class Model;
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class VirtualDirectoryManager {
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public:
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static VirtualDirectoryManager* Instance();
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bool Lock() { return fLock.Lock(); }
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void Unlock() { fLock.Unlock(); }
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status_t ResolveDirectoryPaths(
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const node_ref& definitionFileNodeRef,
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const entry_ref& definitionFileEntryRef,
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BStringList& _directoryPaths,
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node_ref* _definitionFileNodeRef = NULL,
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entry_ref* _definitionFileEntryRef = NULL);
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bool GetDefinitionFileChangeTime(
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const node_ref& definitionFileRef,
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bigtime_t& _time) const;
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bool GetRootDefinitionFile(
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const node_ref& definitionFileRef,
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node_ref& _rootDefinitionFileRef);
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bool GetSubDirectoryDefinitionFile(
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const node_ref& baseDefinitionRef,
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const char* subDirName,
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entry_ref& _entryRef, node_ref& _nodeRef);
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bool GetParentDirectoryDefinitionFile(
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const node_ref& subDirDefinitionRef,
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entry_ref& _entryRef, node_ref& _nodeRef);
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status_t TranslateDirectoryEntry(
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const node_ref& definitionFileRef,
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dirent* buffer);
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status_t TranslateDirectoryEntry(
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const node_ref& definitionFileRef,
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entry_ref& entryRef, node_ref& _nodeRef);
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bool DefinitionFileChanged(
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const node_ref& definitionFileRef);
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// returns whether the directory still
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// exists
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status_t DirectoryRemoved(
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const node_ref& definitionFileRef);
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static bool GetEntry(const BStringList& directoryPaths,
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const char* name, entry_ref* _ref,
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struct stat* _st);
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private:
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class Info;
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class RootInfo;
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typedef std::map<node_ref, Info*> NodeRefInfoMap;
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private:
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VirtualDirectoryManager();
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Info* _InfoForNodeRef(const node_ref& nodeRef) const;
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bool _AddInfo(Info* info);
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void _RemoveInfo(Info* info);
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void _UpdateTree(RootInfo* root);
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void _UpdateTree(Info* info);
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void _RemoveDirectory(Info* info);
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status_t _ResolveUnknownDefinitionFile(
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const node_ref& definitionFileNodeRef,
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const entry_ref& definitionFileEntryRef,
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Info*& _info);
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status_t _CreateRootInfo(
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const node_ref& definitionFileNodeRef,
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const entry_ref& definitionFileEntryRef,
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Info*& _info);
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status_t _ReadSubDirectoryDefinitionFileInfo(
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const entry_ref& entryRef,
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entry_ref& _rootDefinitionFileEntryRef,
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BString& _subDirPath);
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private:
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BLocker fLock;
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NodeRefInfoMap fInfos;
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};
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} // namespace BPrivate
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#endif // VIRTUAL_DIRECTORY_MANAGER_H
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