#!/usr/bin/perl

use strict;
use Wx; 

package MyCanvas;

use strict;
use vars qw(@ISA);

@ISA = qw(Wx::ScrolledWindow);

sub new {
  my( $class ) = shift;
  my( $this ) = $class->SUPER::new( @_[0,1,2,3], 0, $_[4] );

  return $this;
}

package MusicOrganiserSplitterWindow; 
use strict;
use vars qw(@ISA);

@ISA = qw(Wx::SplitterWindow);

use Wx qw(:splitterwindow wxDefaultPosition wxDefaultSize);
use Wx::Event qw(EVT_SPLITTER_SASH_POS_CHANGED);

sub new {
  my( $class ) = shift;
  my( $this ) = $class->SUPER::new( @_, wxDefaultPosition, wxDefaultSize,
                                    wxSP_3D|wxSP_LIVE_UPDATE );

  $this->{FRAME} = $_[0];

  return $this;
}

# Extend Wx's "Frame" class to create the main window. 
package MusicOrganiserFrame; 

use base qw(Wx::Frame); 
use Wx qw(wxOK wxICON_INFORMATION wxDefaultPosition wxDefaultSize);
use Wx::Event qw(EVT_MENU); 

sub new { 
  my $class = shift; 
  my $self = $class->SUPER::new(@_);  # Call superclass' constructor

  # Assign ID values
  my ($ID_MENU_FILE_REPORT, $ID_MENU_FILE_STATISTICS, $ID_MENU_EDIT_ADD, 
      $ID_MENU_EDIT_DELETE, $ID_MENU_TOOLS_SETUP, $ID_MENU_HELP_CONTENTS, 
      $ID_MENU_HELP_ABOUT, $ID_MENU_FILE_EXIT) = (1 .. 100); 
 
  # Create menu objects
  my $file_menu = Wx::Menu->new();
  my $tools_menu = Wx::Menu->new();
  my $edit_menu = Wx::Menu->new();
  my $help_menu = Wx::Menu->new();
 
  # Create File menu 
  $file_menu->Append($ID_MENU_FILE_REPORT, "\&Report\tCtrl+R", 
    "Produce reports about your collection."); 
  $file_menu->Append($ID_MENU_FILE_STATISTICS, "\&Statistics\tCtrl+S", 
    "Display statistics for part or all of your collection."); 
  $file_menu->AppendSeparator(); 
  $file_menu->Append($ID_MENU_FILE_EXIT, "E\&xit\tCtrl+Q"); 
  
  # Create Edit menu 
  $edit_menu->Append($ID_MENU_EDIT_ADD, "\&Add volume", 
    "Add a volume to your collection."); 
  $edit_menu->Append($ID_MENU_EDIT_DELETE, "\&Delete volume", 
    "Delete a volume from your collection."); 
  
  # Create Tools menu
  $tools_menu->Append($ID_MENU_TOOLS_SETUP, "\&Setup", 
    "Configure Music Organiser.");

  # Create Help menu 
  $help_menu->Append($ID_MENU_HELP_CONTENTS, "\&Contents"); 
  $help_menu->AppendSeparator(); 
  $help_menu->Append($ID_MENU_HELP_ABOUT, "\&About"); 
  
  # Create the menu bar that stores all the above menus 
  my $menubar = Wx::MenuBar->new(); 
  $menubar->Append($file_menu, '&File'); 
  $menubar->Append($edit_menu, '&Edit'); 
  $menubar->Append($tools_menu, '&Tools'); 
  $menubar->Append($help_menu, '&Help'); 
  $self->SetMenuBar($menubar); 

  # Set up event handling for menu items.
  EVT_MENU($self, $ID_MENU_FILE_REPORT, \&OnMenu); 
  
  # Set window icon 
  $self->SetIcon(Wx::GetWxPerlIcon());

  # Create status bar and assign values to the various segments
  $self->CreateStatusBar(3); 
  $self->SetStatusText("Welcome to Music Organiser!", 1);
  $self->SetStatusText(scalar(gmtime), 2);

   
  my ($splitter) = $self->{SPLITTER} = 
    MusicOrganiserSplitterWindow->new($self, -1);
  my ($lcanvas) = $self->{LEFTCANVAS} = MyCanvas->new($splitter, -1,
                                                        [0,0], [400,400],
                                                        'Test1');

  my ($rcanvas) = $self->{RIGHTCANVAS} = MyCanvas->new($splitter, -1,
                                                         [0,0], [400,400],
                                                         'Test2');

  $self->{TREE} = MusicOrganiserTree->new($lcanvas, -1, wxDefaultPosition,
  wxDefaultSize, wxTR_HAS_BUTTONS);
 
  $self->{SPLITTER}->SetMinimumPaneSize(250); 
  $splitter->Initialize($lcanvas);
  $self->{LEFTCANVAS}->Show( 1 );
  $self->{RIGHTCANVAS}->Show( 1 );
  $self->{SPLITTER}->SplitVertically( @{$self}{'LEFTCANVAS','RIGHTCANVAS'} );
  
  $self->{SPLITTER}->SetSashPosition(250,1); 
  return $self; 
} 

sub OnMenu {
  Wx::MessageBox("Menu item selected", "Menu selected", 
              wxOK | wxICON_INFORMATION, $_[0]); 
}

package MusicOrganiserTree; 

use strict; 

use base qw(Wx::TreeCtrl); 

sub new {
  my $class = shift; 
  my $this = $class->SUPER::new(@_); 

  my $root = $this->AddRoot('Root', -1, -1, Wx::TreeItemData->new('Data')); 
 
  my $tree_item; 
  
  $tree_item = $this->AppendItem($root, "Please work", -1, -1, 
    Wx::TreeItemData->new("I really hope this works!")); 
}

package MusicOrganiserApp; 

use base qw(Wx::App); 

sub OnInit { 
  my $self = shift; 
  my $frame = MusicOrganiserFrame->new(
    undef,                 # Parent window
    -1,                    # Window ID
    'Music Organiser',     # Window title 
    [1, 1],                # X, Y position
    [600, 300]             # X, Y size 
  );

  $self->SetTopWindow($frame);  # Set the top-level window. 
  $frame->Show(1);              # Show the frame. 
}

package main; 

my $app = MusicOrganiserApp->new(); 
$app->MainLoop;