//! Go to next file or directory in file list FLAT
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_flat_next( void )
{
uint16_t u16_save_current_pos;
u16_save_current_pos = nav_filelist_get();
if( nav_file_isdir() )
{
// The current file is a dir then enter in this
if( !nav_dir_cd() )
return false;
if( nav_filelist_set( 0 , FS_FIND_NEXT ) )
{
// A file is present in this dir then valid the new position
fs_g_nav.u8_flat_dir_level++;
fs_g_nav.u16_flat_pos_offset += u16_save_current_pos+1;
return true;
}else{
// No file then return in parent dir
if( !nav_dir_gotoparent() )
return false; // Error
}
}
// Find next file in the current dir or the parent dir
while( !nav_filelist_set( 0 , FS_FIND_NEXT ) )
{
// End of the directory then goes to parent
if( 0 == fs_g_nav.u8_flat_dir_level )
return false; // End of list FLAT
if( !nav_dir_gotoparent() )
return false; // Error
fs_g_nav.u8_flat_dir_level--;
}
fs_g_nav.u16_flat_pos_offset = (fs_g_nav.u16_flat_pos_offset +u16_save_current_pos +1) -nav_filelist_get();
return true;
}
//! Go to previous file or directory in file list FLAT
//!
//! @return false in case of error, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_flat_previous( void )
{
uint16_t u16_save_current_pos;
u16_save_current_pos = nav_filelist_get();
if( nav_filelist_set( 0 , FS_FIND_PREV ) )
{
while( 1 )
{
if( !nav_file_isdir() )
{
fs_g_nav.u16_flat_pos_offset = ((fs_g_nav.u16_flat_pos_offset +u16_save_current_pos) -nav_filelist_get()) -1;
return true; // New valid position
}
// The selection is a dir then enter in this
if( !nav_dir_cd() )
return false;
if( !nav_filelist_set( 0 , FS_FIND_NEXT ) )
{
// The dir is empty then goes to the parent
nav_dir_gotoparent();
// The parent dir is the new selection
fs_g_nav.u16_flat_pos_offset = ((fs_g_nav.u16_flat_pos_offset +u16_save_current_pos) -nav_filelist_get()) -1;
return true;
}
fs_g_nav.u8_flat_dir_level++;
// Go to the end of dir
while( nav_filelist_set( 0 , FS_FIND_NEXT ) );
}
}
// Beginning of the directory then goes to parent directory
if( 0 == fs_g_nav.u8_flat_dir_level )
return false; // beginning of the file list FLAT
if( !nav_dir_gotoparent() )
return false;
fs_g_nav.u8_flat_dir_level--;
fs_g_nav.u16_flat_pos_offset -= (nav_filelist_get()+1);
return true;
}
//! This function goes to the previous position in filtered file list
//!
//! @return false in case of an error or no next file, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_filterlist_previous( void )
{
uint16_t u16_current_pos;
u16_current_pos = nav_filelist_get();
while( nav_filelist_set( 0, FS_FIND_PREV ) )
{
if( nav_file_isdir()
|| nav_file_checkext( fs_g_nav.sz_filterext ) )
{
fs_g_nav.u16_pos_filterlist--;
return true;
}
}
nav_filelist_goto( u16_current_pos );
return false;
}
//! This function goes to the next position in the filtered file list
//!
//! @return false in case of error or no next file, see global value "fs_g_status" for more detail
//! @return true otherwise
//!
bool nav_filterlist_next( void )
{
uint16_t u16_current_pos;
u16_current_pos = nav_filelist_get();
while( nav_filelist_set( 0, FS_FIND_NEXT ) )
{
if( nav_file_isdir()
|| nav_file_checkext( fs_g_nav.sz_filterext ) )
{
if( FS_NO_SEL == u16_current_pos )
{
fs_g_nav.u16_pos_filterlist = 0;
}else{
fs_g_nav.u16_pos_filterlist++;
}
return true;
}
}
nav_filelist_goto( u16_current_pos );
return false;
}
//! This function returns the position of selected file in file list FLAT
//!
//! @return position of selected file (0 is the first position)
//! @return FS_NO_SEL, in case of no file selected
//!
uint16_t nav_flat_get( void )
{
return (fs_g_nav.u16_flat_pos_offset + nav_filelist_get());
}
