playlistb.cpp

来自「Yet another mp3 player, but this time us」· C++ 代码 · 共 101 行

/* 
  playlistb.cpp  Playlist browser class

  This program is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details, www.gnu.org.

  Copyright (C) 2000  Simon Harrison (email smh@[e-mail])
*/


#include "playlistb.h"

//
// NB:  The playlist browser may have the playlist changed under it
// (by the player).  Should call start_processing multiple times
// To update the list unlike the directory browser.
//


CPlaylistBrowser::start_processing( CPlayList* p )
//
{
int selected;
bool redraw = true;
   
   if (p) { 
      playlist = p;   // store the pointer to the underlying playlist.
                      // we almost certainly want to redraw.
      playlist->NeedsRedraw();  // let the playlist know it's being redrawn.
   } else {
      redraw = playlist->NeedsRedraw();
   }

   if (!redraw) return 0;  // nothing changed.

   // free any previously allocated list.
   selected = GetListSelected();  // try to save the selection over the
                                  // clean()
   clean();
   // TODO:  Mutex the playlist here if mpgcontroller is another thread.
   // Copy the playlist into our own structure.

   int n=playlist->GetEntries();
   if (n) {
      CString* l = new CString[n];
      playlist->SetPtrAtIndex(0);
      for (int i=0;i<n;i++) {
        l[i].SetName( playlist->GetNext() ); 
      } 
      // TODO:  End of mutex.
      // update the selection with the saved one.
      if (selected<=n) {
         SetSelect( selected );
      } else {
         SetSelect( n );
      }
      SetList( l, n );  // Attach the new list
      update();         // Update the page to be shown.
   }
}

CPlaylistBrowser::del()
//
// Delete Item from playlist.
//
{
   // TODO:  Mutex playlist begin
   // Remove the item from the playlist.
   playlist->DeleteAtIndex( GetListSelected()-1 );
   // then re-read it for display.
   //start_processing( NULL );   
   // TODO:  Mutex playlist end
}


/*
CListBrowser cdb;

main()
{
CString* cde;
int n;

   printf( "Starting processing\n" );
   cdb.start_processing();
   printf( "done. processing\n" );
   cde = cdb.GetPage();
   n = cdb.GetPageEnts();
   cdb.DebugDumpPage( cde, n );
   printf( "Running\n" );
}
*/