bookmarks.m

uclinux 下的vlc播放器源代码

/*****************************************************************************
 * bookmarks.m: MacOS X Bookmarks window
 *****************************************************************************
 * Copyright (C) 2005, 2006 the VideoLAN team
 * $Id: bookmarks.m 15136 2006-04-07 18:38:30Z fkuehne $
 *
 * Authors: Felix Kühne <[e-mail]>
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/


/*****************************************************************************
 * Note: 
 * the code used to bind with VLC's modules is heavily based upon 
 * ../wxwidgets/bookmarks.cpp, written by Gildas Bazin. 
 * (he is a member of the VideoLAN team) 
 *****************************************************************************/


/*****************************************************************************
 * Preamble
 *****************************************************************************/

#import "bookmarks.h"
#import "intf.h"
#import "wizard.h"
#import <vlc/intf.h>

/*****************************************************************************
 * VLCExtended implementation
 *
 * implements the GUI functions for the window, the data source and the
 * delegate for o_tbl_dataTable
 *****************************************************************************/

@implementation VLCBookmarks

static VLCBookmarks *_o_sharedInstance = nil;

+ (VLCBookmarks *)sharedInstance
{
    return _o_sharedInstance ? _o_sharedInstance : [[self alloc] init];
}

- (id)init
{
    if (_o_sharedInstance) {
        [self dealloc];
    } else {
        _o_sharedInstance = [super init];
    }

    return _o_sharedInstance;
}

/*****************************************************************************
 * GUI methods
 *****************************************************************************/

- (void)awakeFromNib
{
    [self initStrings];
}

- (void)dealloc
{
    if( p_old_input )
    {
        vlc_object_release( p_old_input );
    }
    [super dealloc];
}

- (void)initStrings
{
    /* localise the items */
    
    /* main window */
    [o_bookmarks_window setTitle: _NS("Bookmarks")];
    [o_btn_add setTitle: _NS("Add")];
    [o_btn_clear setTitle: _NS("Clear")];
    [o_btn_edit setTitle: _NS("Edit")];
    [o_btn_extract setTitle: _NS("Extract")];
    [o_btn_rm setTitle: _NS("Remove")];
    [[[o_tbl_dataTable tableColumnWithIdentifier:@"description"] headerCell]
        setStringValue: _NS("Description")];
    [[[o_tbl_dataTable tableColumnWithIdentifier:@"size_offset"] headerCell]
        setStringValue: _NS("Position")];
    [[[o_tbl_dataTable tableColumnWithIdentifier:@"time_offset"] headerCell]
        setStringValue: _NS("Time")];
        
    /* edit window */
    [o_edit_btn_ok setTitle: _NS("OK")];
    [o_edit_btn_cancel setTitle: _NS("Cancel")];
    [o_edit_lbl_name setStringValue: _NS("Name")];
    [o_edit_lbl_time setStringValue: _NS("Time")];
    [o_edit_lbl_bytes setStringValue: _NS("Position")];
}

- (void)showBookmarks
{
    /* show the window, called from intf.m */
    [o_bookmarks_window displayIfNeeded];
    [o_bookmarks_window makeKeyAndOrderFront:nil];
}

- (IBAction)add:(id)sender
{
    /* add item to list */
    intf_thread_t * p_intf = VLCIntf;
    input_thread_t * p_input = (input_thread_t *)vlc_object_find( p_intf,
        VLC_OBJECT_INPUT, FIND_ANYWHERE );
    if( !p_input )
        return;
    
    seekpoint_t bookmark;
    vlc_value_t pos;
    bookmark.psz_name = NULL;
    bookmark.i_byte_offset = 0;
    bookmark.i_time_offset = 0;
    
    var_Get(p_intf, "position", &pos);
    bookmark.psz_name = _("Untitled");
    input_Control( p_input, INPUT_GET_BYTE_POSITION, &bookmark.i_byte_offset );
    var_Get( p_input, "time", &pos );
    bookmark.i_time_offset = pos.i_time;
    input_Control( p_input, INPUT_ADD_BOOKMARK, &bookmark );
    
    vlc_object_release( p_input );
    
    [o_tbl_dataTable reloadData];
}

- (IBAction)clear:(id)sender
{
    /* clear table */
    intf_thread_t * p_intf = VLCIntf;
    input_thread_t *p_input = (input_thread_t *)vlc_object_find( p_intf,
        VLC_OBJECT_INPUT, FIND_ANYWHERE );
    
    if( !p_input )
        return;

    input_Control( p_input, INPUT_CLEAR_BOOKMARKS );

    vlc_object_release( p_input );
    
    [o_tbl_dataTable reloadData];
}

- (IBAction)edit:(id)sender
{
    /* put values to the sheet's fields and show sheet */
    /* we take the values from the core and not the table, because we cannot
     * really trust it */
    intf_thread_t * p_intf = VLCIntf;
    input_thread_t * p_input = (input_thread_t *)vlc_object_find( p_intf,
        VLC_OBJECT_INPUT, FIND_ANYWHERE );
    seekpoint_t **pp_bookmarks;
    int i_bookmarks;
    char * toBeReturned;
    toBeReturned = "";
    int i_toBeReturned;
    i_toBeReturned = 0;
    int row;
    row = [o_tbl_dataTable selectedRow];
    
    if( !p_input )
    {
        return;
    } 
    else if( input_Control( p_input, INPUT_GET_BOOKMARKS, &pp_bookmarks,
        &i_bookmarks ) != VLC_SUCCESS )
    {
        vlc_object_release( p_input );
        return;
    } 
    else if(row < 0)
    {
        vlc_object_release( p_input );
        return;
    } else {
        [o_edit_fld_name setStringValue: [NSString stringWithUTF8String:
            pp_bookmarks[row]->psz_name]];
        [o_edit_fld_time setStringValue: [[NSNumber numberWithInt:
            (pp_bookmarks[row]->i_time_offset / 1000000)] stringValue]];
        [o_edit_fld_bytes setStringValue: [[NSNumber numberWithInt:
            pp_bookmarks[row]->i_byte_offset] stringValue]];
    }
    
    p_old_input = p_input;
    vlc_object_release( p_input );

    [NSApp beginSheet: o_edit_window
        modalForWindow: o_bookmarks_window
        modalDelegate: o_edit_window
        didEndSelector: nil
        contextInfo: nil];
}

- (IBAction)edit_cancel:(id)sender
{
    /* close sheet */
    [NSApp endSheet:o_edit_window];
    [o_edit_window close];
}

- (IBAction)edit_ok:(id)sender
{
    /* save field contents and close sheet */
    
    intf_thread_t * p_intf = VLCIntf;
    seekpoint_t **pp_bookmarks;
    int i_bookmarks, i;
    input_thread_t *p_input = (input_thread_t *)vlc_object_find( p_intf,
        VLC_OBJECT_INPUT, FIND_ANYWHERE );
    
    if( !p_input )
    {
        NSBeginCriticalAlertSheet(_NS("No input"), _NS("OK"),
                @"", @"", o_bookmarks_window, nil, nil, nil, nil, _NS("No "
                "input found. A stream must be playing or paused for "
                "bookmarks to work."));
        return;
    }
    if( p_old_input != p_input )
    {
        NSBeginCriticalAlertSheet(_NS("Input has changed"), _NS("OK"),
            @"", @"", o_bookmarks_window, nil, nil, nil, nil, _NS("Input "
            "has changed, unable to save bookmark. Suspending playback with "
            "\"Pause\" while editing bookmarks to ensure to keep the same "
            "input."));
        vlc_object_release( p_input );
        return;
    }
    
    if( input_Control( p_input, INPUT_GET_BOOKMARKS, &pp_bookmarks,
        &i_bookmarks ) != VLC_SUCCESS )
    {
        vlc_object_release( p_input );
        return;
    } 

    i = [o_tbl_dataTable selectedRow];