document that dragging in wxTreeCtrl needs to be explicitely allowed (fixes #3915)

[wxWidgets.git] / interface / wx / file.h

diff --git a/interface/wx/file.h b/interface/wx/file.h
index 0b41f1c4b8dc092ef0e1be30629c935d948e8ccd..bc1fc1501668652d8c059b188eed776a7d5edbd7 100644 (file)
--- a/interface/wx/file.h
+++ b/interface/wx/file.h
@@ -7,25 +7,56 @@
 /////////////////////////////////////////////////////////////////////////////
 
 
 /////////////////////////////////////////////////////////////////////////////
 
 

-//@{

 /**
 /**

-    These constants define the file access rights and are used with wxFile::Create and wxFile::Open.
+    We redefine these constants here because S_IREAD &c are _not_ standard.
+    However, we do assume that the values correspond to the Unix umask bits.

 */
 */

-#define wxS_IRUSR 00400
-#define wxS_IWUSR 00200
-#define wxS_IXUSR 00100
-
-#define wxS_IRGRP 00040
-#define wxS_IWGRP 00020
-#define wxS_IXGRP 00010
-
-#define wxS_IROTH 00004
-#define wxS_IWOTH 00002
-#define wxS_IXOTH 00001
-
-/** Default mode for the new files: corresponds to umask 022 */
-#define wxS_DEFAULT  (wxS_IRUSR | wxS_IWUSR | wxS_IRGRP | wxS_IWGRP | wxS_IROTH | wxS_IWOTH)
-//@}
+enum wxPosixPermissions
+{
+    /// standard Posix names for these permission flags
+    //@{
+    wxS_IRUSR = 00400,
+    wxS_IWUSR = 00200,
+    wxS_IXUSR = 00100,
+
+    wxS_IRGRP = 00040,
+    wxS_IWGRP = 00020,
+    wxS_IXGRP = 00010,
+
+    wxS_IROTH = 00004,
+    wxS_IWOTH = 00002,
+    wxS_IXOTH = 00001,
+    //@}
+
+    /// longer but more readable synonims for the constants above
+    //@{
+    wxPOSIX_USER_READ = wxS_IRUSR,
+    wxPOSIX_USER_WRITE = wxS_IWUSR,
+    wxPOSIX_USER_EXECUTE = wxS_IXUSR,
+
+    wxPOSIX_GROUP_READ = wxS_IRGRP,
+    wxPOSIX_GROUP_WRITE = wxS_IWGRP,
+    wxPOSIX_GROUP_EXECUTE = wxS_IXGRP,
+
+    wxPOSIX_OTHERS_READ = wxS_IROTH,
+    wxPOSIX_OTHERS_WRITE = wxS_IWOTH,
+    wxPOSIX_OTHERS_EXECUTE = wxS_IXOTH,
+    //@}
+
+    /// Default mode for the new files: allow reading/writing them to everybody but
+    /// the effective file mode will be set after ANDing this value with umask and
+    /// so won't include wxS_IW{GRP,OTH} for the default 022 umask value
+    wxS_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | \
+                   wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | \
+                   wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE),
+
+    /// Default mode for the new directories (see wxFileName::Mkdir): allow
+    /// reading/writing/executing them to everybody, but just like wxS_DEFAULT
+    /// the effective directory mode will be set after ANDing this value with umask
+    wxS_DIR_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | wxPOSIX_USER_EXECUTE | \
+                       wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | wxPOSIX_GROUP_EXECUTE | \
+                       wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE | wxPOSIX_OTHERS_EXECUTE)
+};

 
 
 
 
 
 


@@ -53,12 +84,12 @@
     file by default, you should explicitly call wxTempFile::Commit() to do it.
     Calling wxTempFile::Discard() explicitly discards any modifications: it
     closes and deletes the temporary file and leaves the original file unchanged.
     file by default, you should explicitly call wxTempFile::Commit() to do it.
     Calling wxTempFile::Discard() explicitly discards any modifications: it
     closes and deletes the temporary file and leaves the original file unchanged.

-    If you don't call neither of Commit() and Discard(), the destructor will
+    If you call neither Commit() nor Discard(), the destructor will

     call Discard() automatically.
 
     To summarize: if you want to replace another file, create an instance of
     call Discard() automatically.
 
     To summarize: if you want to replace another file, create an instance of

-    wxTempFile passing the name of the file to be replaced to the constructor
-    (you may also use default constructor and pass the file name to wxTempFile::Open).
+    wxTempFile passing the name of the file to be replaced to the constructor.
+    (You may also use default constructor and pass the file name to wxTempFile::Open.)

     Then you can write to wxTempFile using wxFile-like functions and later call
     wxTempFile::Commit() to replace the old file (and close this one) or call
     wxTempFile::Discard() to cancel the modifications.
     Then you can write to wxTempFile using wxFile-like functions and later call
     wxTempFile::Commit() to replace the old file (and close this one) or call
     wxTempFile::Discard() to cancel the modifications.


@@ -71,12 +102,12 @@ class wxTempFile
 public:
     /**
         Associates wxTempFile with the file to be replaced and opens it.
 public:
     /**
         Associates wxTempFile with the file to be replaced and opens it.

-        You should use IsOpened() to verify if the constructor succeeded.
+        You should use IsOpened() to verify that the constructor succeeded.

     */
     wxTempFile(const wxString& strName);
 
     /**
     */
     wxTempFile(const wxString& strName);
 
     /**

-        Destructor calls Discard() if temporary file is still opened.
+        Destructor calls Discard() if temporary file is still open.

     */
     ~wxTempFile();
 
     */
     ~wxTempFile();
 


@@ -85,14 +116,14 @@ public:
         file to the old name. Returns @true if both actions succeeded.
 
         If @false is returned it may unfortunately mean two quite different things:
         file to the old name. Returns @true if both actions succeeded.
 
         If @false is returned it may unfortunately mean two quite different things:

-        either that either the old file couldn't be deleted or that the new file
+        either that the old file couldn't be deleted or that the new file

         couldn't be renamed to the old name.
     */
     bool Commit();
 
     /**
         couldn't be renamed to the old name.
     */
     bool Commit();
 
     /**

-        Discard changes: the old file contents is not changed, temporary file is
-        deleted.
+        Discard changes: the old file contents are not changed, the temporary
+        file is deleted.

     */
     void Discard();
 
     */
     void Discard();
 


@@ -105,8 +136,7 @@ public:
         Returns the length of the file.
 
         This method may return wxInvalidOffset if the length couldn't be
         Returns the length of the file.
 
         This method may return wxInvalidOffset if the length couldn't be

-        determined or also 0 even for non-empty files if the file is not
-        seekable.
+        determined or 0 even for non-empty files if the file is not seekable.

 
         In general, the only way to determine if the file for which this function
         returns 0 is really empty or not is to try reading from it.
 
         In general, the only way to determine if the file for which this function
         returns 0 is really empty or not is to try reading from it.


@@ -149,20 +179,11 @@ public:
 /**
     @class wxFile
 
 /**
     @class wxFile
 

-    A wxFile performs raw file I/O.
-
-    This is a very small class designed to minimize the overhead of using it - in fact,
-    there is hardly any overhead at all, but using it brings you automatic error
-    checking and hides differences between platforms and compilers.
-
-    wxFile also automatically closes the file in its destructor making it unnecessary
-    to worry about forgetting to do it.
-

     A wxFile performs raw file I/O. This is a very small class designed to
     minimize the overhead of using it - in fact, there is hardly any overhead at
     all, but using it brings you automatic error checking and hides differences
     between platforms and compilers. wxFile also automatically closes the file in
     A wxFile performs raw file I/O. This is a very small class designed to
     minimize the overhead of using it - in fact, there is hardly any overhead at
     all, but using it brings you automatic error checking and hides differences
     between platforms and compilers. wxFile also automatically closes the file in

-    its destructor making it unnecessary to worry about forgetting to do it.
+    its destructor so you won't forget to do so.

     wxFile is a wrapper around @c file descriptor. - see also wxFFile for a
     wrapper around @c FILE structure.
 
     wxFile is a wrapper around @c file descriptor. - see also wxFFile for a
     wrapper around @c FILE structure.
 


@@ -195,7 +216,7 @@ public:
         read_write,
 
         /** Open file for appending: the file is opened for writing, but the old contents
         read_write,
 
         /** Open file for appending: the file is opened for writing, but the old contents

-            of the file is not erased and the file pointer is initially placed at the end
+            of the file are not erased and the file pointer is initially placed at the end

             of the file; can not be used with Access().
 
             This is the same as OpenMode::write if the file doesn't exist.
             of the file; can not be used with Access().
 
             This is the same as OpenMode::write if the file doesn't exist.


@@ -242,7 +263,7 @@ public:
 
     /**
         Destructor will close the file.
 
     /**
         Destructor will close the file.

-        @note it is not virtual so you should not use wxFile polymorphically.
+        @note This destructor is not virtual so you should not use wxFile polymorphically.

     */
     ~wxFile();
 
     */
     ~wxFile();
 


@@ -254,7 +275,7 @@ public:
 
     /**
         Attaches an existing file descriptor to the wxFile object.
 
     /**
         Attaches an existing file descriptor to the wxFile object.

-        Example of predefined file descriptors are 0, 1 and 2 which correspond to
+        Examples of predefined file descriptors are 0, 1 and 2 which correspond to

         stdin, stdout and stderr (and have symbolic names of @c wxFile::fd_stdin,
         @c wxFile::fd_stdout and @c wxFile::fd_stderr).
 
         stdin, stdout and stderr (and have symbolic names of @c wxFile::fd_stdin,
         @c wxFile::fd_stdout and @c wxFile::fd_stderr).
 


@@ -266,7 +287,7 @@ public:
     /**
         Closes the file.
     */
     /**
         Closes the file.
     */

-    void Close();
+    bool Close();

 
     /**
         Creates a file for writing.
 
     /**
         Creates a file for writing.


@@ -274,8 +295,8 @@ public:
         If the file already exists, setting @b overwrite to @true will ensure
         it is overwritten.
 
         If the file already exists, setting @b overwrite to @true will ensure
         it is overwritten.
 

-        @a access may be an OR combination of the file access values
-        like ::wxS_IRUSR, ::wxS_IWUSR, etc, etc.
+        @a access may be an OR combination of the ::wxPosixPermissions enumeration
+        values.

     */
     bool Create(const wxString& filename,
                 bool overwrite = false,
     */
     bool Create(const wxString& filename,
                 bool overwrite = false,


@@ -290,7 +311,7 @@ public:
 
     /**
         Returns @true if the end of the file has been reached.
 
     /**
         Returns @true if the end of the file has been reached.

-        Note that the behaviour of the file pointer based class wxFFile is
+        Note that the behaviour of the file pointer-based class wxFFile is

         different as wxFFile::Eof() will return @true here only if an
         attempt has been made to read @b past the last byte of the file, while
         wxFile::Eof() will return @true even before such attempt is made if the
         different as wxFFile::Eof() will return @true here only if an
         attempt has been made to read @b past the last byte of the file, while
         wxFile::Eof() will return @true even before such attempt is made if the


@@ -298,7 +319,7 @@ public:
 
         Note also that this function doesn't work on unseekable file descriptors
         (examples include pipes, terminals and sockets under Unix) and an attempt to
 
         Note also that this function doesn't work on unseekable file descriptors
         (examples include pipes, terminals and sockets under Unix) and an attempt to

-        use it will result in an error message in such case.
+        use it will result in an error message.

 
         So, to read the entire file into memory, you should write a loop which uses
         Read() repeatedly and tests its return condition instead of using Eof()
 
         So, to read the entire file into memory, you should write a loop which uses
         Read() repeatedly and tests its return condition instead of using Eof()


@@ -308,7 +329,7 @@ public:
 
     /**
         Returns @true if the given name specifies an existing regular file
 
     /**
         Returns @true if the given name specifies an existing regular file

-        (not a directory or a link)
+        (not a directory or a link).

     */
     static bool Exists(const wxString& filename);
 
     */
     static bool Exists(const wxString& filename);
 


@@ -343,9 +364,11 @@ public:
             The filename.
         @param mode
             The mode in which to open the file.
             The filename.
         @param mode
             The mode in which to open the file.

+        @param access
+            An OR-combination of wxPosixPermissions enumeration values.

     */
     */

-    bool Open(const wxString& filename,
-              wxFile::OpenMode mode = wxFile::read);
+    bool Open(const wxString& filename, wxFile::OpenMode mode = wxFile::read,
+              int access = wxS_DEFAULT);

 
     /**
         Reads from the file into a memory buffer.
 
     /**
         Reads from the file into a memory buffer.


@@ -357,7 +380,7 @@ public:
 
         @return The number of bytes read, or the symbol wxInvalidOffset.
     */
 
         @return The number of bytes read, or the symbol wxInvalidOffset.
     */

-    size_t Read(void* buffer, size_t count);
+    ssize_t Read(void* buffer, size_t count);

 
     /**
         Seeks to the specified position.
 
     /**
         Seeks to the specified position.