/*
 * EX01WIN.C
 *
 *  C/Windows Example program for ArchiveLib 2.0
 *
 *  Copyright (c) Greenleaf Software, Inc. 1994 - 1996
 *  All Rights Reserved
 *
 * MEMBERS/FUNCTIONS DEMONSTRATED
 *
 *  ALArchiveAppend()
 *  ALArchiveFillListBoxDialog()
 *  ALEntryListAddFromDialog()
 *  EditDisplay()
 *  newALExpander()
 *  deleteALExpander()
 *  ALExpanderGetNextFile()
 *
 * DESCRIPTION
 *
 * This program demonstrates the Append() function, using the overloaded
 * version that appends files to an archive.  It has three command
 * handlers.  One reads the contents of the current directory, so you
 * can pick files to append.  The next command actually performs the
 * append.  And finally, there is a function to read the contents
 * of the archive, so you know that the append did something useful.
 *
 * This program is functionally equivalent to EX01WIN.CPP.  The C version
 * uses the translation layer functions to get the job done, but if
 * you put them side by side, you won't see too much difference.
 *
 * REVISION HISTORY
 *
 *  February 1, 1996  2.0A  : Second release
 *
 */

#define STRICT
#include <windows.h>
#include <stdarg.h>

#include "arclib.h"
#include "algauge.h"
#include "wildcard.h"
#include "winmon.h"
#include "pkarc.h"
#include "glarc.h"
#include "ex01win.h"


int iInstanceNumber;
HINSTANCE hInstance;
HWND hDlgMain;
hALArchive hArchive = 0;

BOOL AL_EXPORT CALLBACK AboutDialogProc( HWND hDlg, UINT message, WPARAM wParam, LPARAM );
void SizeFramingWindow( HWND hDlg );
void ReadArchive( HWND hDlg );
void Append( HWND hDlg );

/*
 * This function uses a wild card expander to dump the contents of the
 * directory into a window, based on the wild cards found in the
 * AL_INPUT_FILES text box.
 */

void ReadDir( HWND hDlg )
{
    char dir_mask[ 128 ];
    hALExpander hExpander;
    char AL_DLL_FAR *p;

    GetDlgItemText( hDlg, AL_DIR_MASK, dir_mask, 128 );
    SendDlgItemMessage( hDlg, AL_INPUT_FILES, LB_RESETCONTENT, 0, 0 );
    hExpander = newALExpander( dir_mask, 0, 0 );
    while ( ( p = ALExpanderGetNextFile( hExpander ) ) != 0 )
		  SendDlgItemMessage( hDlg,
                            AL_INPUT_FILES,
                            LB_ADDSTRING,
                            0,
                            (LPARAM)( (LPSTR) p ) );
    deleteALExpander( hExpander );
}

/*
 * This is the routine that appends the marked objects from the
 * directory window to the archive.  We have to first create a monitor,
 * then a list.  We make the entries from the list box, then append them
 * to the archive.  Finally, we call the ReadArchive() function to update
 * the display with the new archive information.
 */

void Append( HWND hDlg )
{
    char input_name[ 128 ];
    hALMonitor hMonitor;
    hALEntryList hList;
    WORD count;

    GetDlgItemText( hDlg, AL_ARCHIVE_NAME, input_name, 128 );
	 hMonitor = newALWindowsMessage( AL_MONITOR_JOB,
                                    GetDlgItem( hDlg, AL_PROGRESS_TEXT ),
                                    AL_SEND_RATIO,
                                    GetDlgItem( hDlg, AL_PROGRESS_BAR ),
                                    ALGaugeSetPosition );

#if defined( ZIP )
    hArchive = newALPkArchive( input_name );
    hList = newALListPkCompressFileTools( hMonitor, 9, 15, 8 );
#else
    hArchive = newALGlArchive( input_name );
    hList = newALListFullTools( hMonitor );
#endif
    if ( !hArchive || !hList )
        SendDlgItemMessage( hDlg,
                            AL_ARCHIVE_CONTENTS,
                            LB_ADDSTRING,
                            0,
                            (LPARAM)( (LPSTR) "Error!" ) );
    else {
		  count = (WORD) ALEntryListMakeEntriesFromListBox( hList, hDlg, AL_INPUT_FILES );
        EditDisplay( hDlg,
                     AL_DEBUG,
                     "%d file%s selected\r\n",
							count,
							(LPSTR) (( count == 1 ) ? " is" : "s are" ) );
        ALArchiveAppend( hArchive, hList );
        ReadArchive( hDlg );
    }
    deleteALMonitor( hMonitor );
    if ( hList )
        deleteALEntryList( hList );
    if ( hArchive )
        deleteALArchive( hArchive );
    hArchive = 0;
}

/*
 * This function reads the contents of the archive into a list box.  Since
 * we have a dedicated function to do this, it is a pretty easy piece of
 * work.
 */

void ReadArchive( HWND hDlg )
{
    char input_name[ 128 ];
    hALArchive archive;

    GetDlgItemText( hDlg, AL_ARCHIVE_NAME, input_name, 128 );
#if defined( ZIP )
    archive = newALPkArchive( input_name );
#else
    archive = newALGlArchive( input_name );
#endif
    if ( archive ) {
        ALArchiveFillListBox( archive, hDlg, AL_ARCHIVE_CONTENTS );
        deleteALArchive( archive );
    }
    return;
}

/*
 * In this program, we have a main window, but it is just a dummy framing
 * window for the dialog box.  This dialog box proc is where all the action
 * takes place.  It handles input keystrokes and button presses from the
 * dialog.
 */

BOOL AL_EXPORT CALLBACK MainDialogProc( HWND hDlg,
                                        UINT message,
                                        WPARAM wParam,
                                        LPARAM lParam )
{
    char buf[ 81 ];

    AL_UNUSED_PARAMETER( lParam );

    switch ( message ) {
/*
 * Upon initialization, we set the window title, the archive name, and
 * the wild cards that will be used to read the directory.
 */
        case WM_INITDIALOG :
            SizeFramingWindow( hDlg );
            wsprintf( buf, "Windows Example 01 <%d>", iInstanceNumber );
            SetWindowText( hDlg, buf );
#if defined( ZIP )
            wsprintf( buf, "WIN%02d.ZIP", iInstanceNumber );
#else
            wsprintf( buf, "WIN%02d.GAL", iInstanceNumber );
#endif
            SetDlgItemText( hDlg, AL_ARCHIVE_NAME, buf );
            SetDlgItemText( hDlg, AL_DIR_MASK, "*.BAT,*.OBJ" );
            return( TRUE );

/*
 * The commands this guy process are mostly related to button presses.
 * Each of the handlers winds up being called from somewhere in here.
 */
        case WM_COMMAND :
            switch ( wParam ) {
/*
 * We get the IDOK message when someone presses the enter key while in the
 * dialog.  Depending on where the focus is, we either read the directory
 * or read the archive contents into a list box.
 */
                case IDOK : /*User has pressed enter*/
                    if ( GetFocus() == GetDlgItem( hDlg, AL_DIR_MASK ) )
                        ReadDir( hDlg );
                    else if ( GetFocus() == GetDlgItem( hDlg, AL_ARCHIVE_NAME ) )
                        ReadArchive( hDlg );
                    break;
                case AL_APPEND :
/*
 * The append button makes the append happen.  Note the tricky bit here,
 * we have to make sure the archive isn't already in the process of having
 * an append done.  If it is in progress, we just blow off this request.
 */
                    if ( !hArchive )
                        Append( hDlg );
                    return TRUE;
/*
 * Pressing this button reads the archive contents into a list box.
 */
                case AL_READ_ARCHIVE :
                    ReadArchive( hDlg );
                    return TRUE;
/*
 * Pressing this button expands the wild cards in the text box into
 * a list of file names, ready for selection.
 */
                case AL_READ_DIR :
                    ReadDir( hDlg );
                    return TRUE;
/*
 * If the user wants to quit, we first check to see if an append() is in
 * progress.  If it is, we do our best to abort the current append,
 * but we don't let the user exit just yet.
 *
 * If no append is already in progress, we just initiate the shutdown
 * process, by sending the destroy command to the framing window and
 * destroying this dialog.
 */
                case AL_EXIT :
                case WM_QUIT :
                case WM_DESTROY :
                    if ( hArchive ) {
                        hALStorage hFile = ALArchiveGetStorage( hArchive );
                        ALStorageSetError( hFile,
                                           AL_USER_ABORT,
                                           "User pressed abort key" );
                        FlashWindow( GetParent( hDlg ), 1 );
                        FlashWindow( GetParent( hDlg ), 0 );
                        return FALSE;
                    }
                    PostMessage( GetParent( hDlg ),WM_DESTROY, 0, 0 );
                    DestroyWindow( hDlgMain );
                    hDlgMain = 0;
                    return TRUE;

/*
 * Aborting this job is simply a matter of setting the error status
 * for the archive object.  Next time he comes up for air, he will
 * abort.
 */
                case AL_ABORT :
                    if ( hArchive ) {
                        hALStorage hFile = ALArchiveGetStorage( hArchive );
                        ALStorageSetError( hFile,
                                           AL_USER_ABORT,
                                           "User pressed abort key" );
                    }
                    return TRUE;
            }
            break;
    }
    return FALSE;
}

/*
 * The about box.
 */

BOOL AL_EXPORT CALLBACK
AboutDialogProc( HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam )
{
    RECT rc;

    AL_UNUSED_PARAMETER( lParam );

    switch ( message ) {
        case WM_INITDIALOG :
            GetWindowRect( hDlg, &rc );
            SetWindowPos( hDlg,
                          0,
                          ((GetSystemMetrics(SM_CXSCREEN) - (rc.right - rc.left)) / 2),
                          ((GetSystemMetrics(SM_CYSCREEN) - (rc.bottom - rc.top)) / 2),
                          0, 0, SWP_NOSIZE | SWP_NOACTIVATE);
            break;
        case WM_COMMAND :
            switch ( wParam ) {
                case IDOK :
                case WM_QUIT :
                case WM_DESTROY :
                    EndDialog( hDlg, TRUE );
                    return TRUE;

            }
            break;
    }
    return FALSE;
}

/*
 * The main window is nothing more than a shell that exists to manage
 * the dialog box, take menu commands, and process accelerator keys.
 */
LONG AL_EXPORT CALLBACK MainWndProc( HWND hWnd,
                                     UINT message,
                                     WPARAM wParam,
                                     LPARAM lParam )
{
    switch ( message ) {
        case WM_COMMAND:
            switch( wParam ) {
                case AL_GOTO_INPUT :
                    if ( hDlgMain)
                        SetFocus( GetDlgItem( hDlgMain, AL_DIR_MASK ) );
                    break;
                case AL_GOTO_OUTPUT :
                    if ( hDlgMain)
                        SetFocus( GetDlgItem( hDlgMain, AL_ARCHIVE_NAME ) );
                    break;
                case AL_ABOUT :
                    DialogBox( hInstance, "ALAboutDialog", 0, (DLGPROC) AboutDialogProc );
                    return TRUE;
                case AL_EXIT :
                    PostQuitMessage( 0 );
            }
            break;
        case WM_SETFOCUS:
            SetFocus( hDlgMain ); /* insure that the Dialog Box has the focus */
            break;
        case WM_DESTROY:
            PostQuitMessage( 0 );
            break;
    }
    return DefWindowProc( hWnd, message, wParam, lParam );
}

/*
 * WinMain calls the initialization routine for the progress gauge and
 * registers our class.  It then creates the dialog, and starts the
 * message pump.
 */

int PASCAL WinMain( HINSTANCE instance,
                    HINSTANCE previous_instance,
                    LPSTR cmd_line,
                    int nCmdShow )
{
    HWND hWnd;
    FARPROC lpfn;
    MSG msg;
    HACCEL hAccel;

    AL_UNUSED_PARAMETER( cmd_line );

    hInstance = instance;
    if ( !ALGaugeInit( instance, previous_instance ) )
        return (FALSE);
    if ( previous_instance == 0 ) {
        WNDCLASS wc;
        wc.style         = 0;
        wc.lpfnWndProc   = (WNDPROC) MainWndProc;
        wc.cbClsExtra    = 0;
        wc.cbWndExtra    = 0;
        wc.hInstance     = hInstance;
        wc.hIcon         = LoadIcon( hInstance, "ALIcon" );
        wc.hCursor       = LoadCursor(0,IDC_ARROW);
        wc.hbrBackground = (HBRUSH) GetStockObject( WHITE_BRUSH );
        wc.lpszMenuName  = "ALMenu";
        wc.lpszClassName = "ALClass";
        if ( !RegisterClass( &wc ) )
            return FALSE;
        iInstanceNumber = 0;
    }
#if !defined( AL_FLAT_MODEL )
    else {
        GetInstanceData( previous_instance,
                         (PBYTE) &iInstanceNumber,
                         sizeof iInstanceNumber );
        iInstanceNumber++;
    }
#endif
    hWnd = CreateWindow( "ALClass",
                         "ArchiveLib Example Program",
                         WS_OVERLAPPED | WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU,
                         CW_USEDEFAULT,
                         0,
                         0,
                         0,
                         0,
                         0,
                         hInstance,
                         0);
    lpfn = MakeProcInstance( (FARPROC) MainDialogProc, hInstance );
    hDlgMain = CreateDialog( hInstance, "ALMainDialog", hWnd, (DLGPROC) lpfn );
    ShowWindow( hWnd, nCmdShow );
    ShowWindow( hDlgMain, SW_SHOW );
    hAccel = LoadAccelerators( hInstance, "ALAccelerator" );
    while ( GetMessage ( &msg, 0, 0, 0) ) {
        HWND hWndAccel = GetActiveWindow();
        if ( !( hWndAccel && TranslateAccelerator( hWndAccel, hAccel, &msg ) ) )
        {
            if ( hDlgMain == NULL || !IsDialogMessage( hDlgMain,&msg ) ) {
                TranslateMessage( &msg );
                DispatchMessage( &msg );
            }
        }
    }
    return (msg.wParam);
}

/*
 * I need this routine for one purpose only.  After the dialog is loaded,
 * it calls this routine, which adjusts the size of the framing window to
 * fit exactly around the dialog box.  It also moves it to the center of
 * the screen.
 */

void SizeFramingWindow( HWND hDlg )
{
    RECT rect;
    int y;
    int x;

    GetWindowRect( hDlg, &rect );
    y = GetSystemMetrics( SM_CYSCREEN );
    y -= ( rect.bottom - rect.top );
    y -= GetSystemMetrics( SM_CYMENU ) + GetSystemMetrics( SM_CYCAPTION );
    y /= 2;
    x = GetSystemMetrics( SM_CXSCREEN );
    x -= rect.right - rect.left;
    x /= 2;
    SetWindowPos( GetParent( hDlg ), 0, x, y,
                  rect.right-rect.left,
                  rect.bottom-rect.top +
                  GetSystemMetrics( SM_CYMENU ) +
                  GetSystemMetrics( SM_CYCAPTION ),
                  SWP_NOZORDER );
}