preferences.cpp

VLC媒体播放程序

                                          wxU(p_module->psz_capability),
                                          -1,-1,config_data );
        }

        /* Add the plugin to the tree */
        ConfigTreeData *config_data = new ConfigTreeData;
        config_data->b_submodule = p_module->b_submodule;
        config_data->i_object_id = p_module->b_submodule ?
            ((module_t *)p_module->p_parent)->i_object_id :
            p_module->i_object_id;
        config_data->psz_help = NULL;
        AppendItem( capability_item, wxU(p_module->psz_object_name), -1, -1,
                    config_data );
    }

    /* Sort all this mess */
    long cookie; size_t i_child_index;
    SortChildren( plugins_item );
    wxTreeItemId capability_item = GetFirstChild( plugins_item, cookie);
    for( i_child_index = 0;
         i_child_index < GetChildrenCount( plugins_item, FALSE );
         i_child_index++ )
    {
        SortChildren( capability_item );
        capability_item = GetNextChild( plugins_item, cookie );
    }

    /* Clean-up everything */
    vlc_list_release( p_list );

    p_sizer->Add( this, 1, wxEXPAND | wxALL, 0 );
    p_sizer->Layout();

    /* Update Tree Ctrl */
#ifndef WIN32 /* Workaround a bug in win32 implementation */
    SelectItem( GetFirstChild( root_item, cookie ) );
#endif

    Expand( general_item );
}

PrefsTreeCtrl::~PrefsTreeCtrl()
{
}

void PrefsTreeCtrl::ApplyChanges()
{
    long cookie, cookie2;
    ConfigTreeData *config_data;

    /* Apply changes to the main module */
    wxTreeItemId item = GetFirstChild( general_item, cookie );
    for( size_t i_child_index = 0;
         i_child_index < GetChildrenCount( general_item, FALSE );
         i_child_index++ )
    {
        config_data = (ConfigTreeData *)GetItemData( item );
        if( config_data && config_data->panel )
        {
            config_data->panel->ApplyChanges();
        }

        item = GetNextChild( general_item, cookie );
    }

    /* Apply changes to the plugins */
    item = GetFirstChild( plugins_item, cookie );
    for( size_t i_child_index = 0;
         i_child_index < GetChildrenCount( plugins_item, FALSE );
         i_child_index++ )
    {
        wxTreeItemId item2 = GetFirstChild( item, cookie2 );
        for( size_t i_child_index = 0;
             i_child_index < GetChildrenCount( item, FALSE );
             i_child_index++ )
        {
            config_data = (ConfigTreeData *)GetItemData( item2 );
            if( config_data && config_data->panel )
            {
                config_data->panel->ApplyChanges();
            }

            item2 = GetNextChild( item, cookie2 );
        }

        item = GetNextChild( plugins_item, cookie );
    }
}

void PrefsTreeCtrl::CleanChanges()
{
    long cookie, cookie2;
    ConfigTreeData *config_data;

    config_data = !GetSelection() ? NULL :
        FindModuleConfig( (ConfigTreeData *)GetItemData( GetSelection() ) );
    if( config_data  )
    {
        config_data->panel->Hide();
        p_sizer->Remove( config_data->panel );
    }

    /* Clean changes for the main module */
    wxTreeItemId item = GetFirstChild( general_item, cookie );
    for( size_t i_child_index = 0;
         i_child_index < GetChildrenCount( general_item, FALSE );
         i_child_index++ )
    {
        config_data = (ConfigTreeData *)GetItemData( item );
        if( config_data && config_data->panel )
        {
            delete config_data->panel;
            config_data->panel = NULL;
        }

        item = GetNextChild( general_item, cookie );
    }

    /* Clean changes for the plugins */
    item = GetFirstChild( plugins_item, cookie );
    for( size_t i_child_index = 0;
         i_child_index < GetChildrenCount( plugins_item, FALSE );
         i_child_index++ )
    {
        wxTreeItemId item2 = GetFirstChild( item, cookie2 );
        for( size_t i_child_index = 0;
             i_child_index < GetChildrenCount( item, FALSE );
             i_child_index++ )
        {
            config_data = (ConfigTreeData *)GetItemData( item2 );

            if( config_data && config_data->panel )
            {
                delete config_data->panel;
                config_data->panel = NULL;
            }

            item2 = GetNextChild( item, cookie2 );
        }

        item = GetNextChild( plugins_item, cookie );
    }

    if( GetSelection() )
    {
        wxTreeEvent event;
        OnSelectTreeItem( event );
    }
}

ConfigTreeData *PrefsTreeCtrl::FindModuleConfig( ConfigTreeData *config_data )
{
    /* We need this complexity because submodules don't have their own config
     * options. They use the parent module ones. */

    if( !config_data || !config_data->b_submodule )
    {
        return config_data;
    }

    long cookie, cookie2;
    ConfigTreeData *config_new;
    wxTreeItemId item = GetFirstChild( plugins_item, cookie );
    for( size_t i_child_index = 0;
         i_child_index < GetChildrenCount( plugins_item, FALSE );
         i_child_index++ )
    {
        wxTreeItemId item2 = GetFirstChild( item, cookie2 );
        for( size_t i_child_index = 0;
             i_child_index < GetChildrenCount( item, FALSE );
             i_child_index++ )
        {
            config_new = (ConfigTreeData *)GetItemData( item2 );
            if( config_new && !config_new->b_submodule &&
                config_new->i_object_id == config_data->i_object_id )
            {
                return config_new;
            }

            item2 = GetNextChild( item, cookie2 );
        }

        item = GetNextChild( plugins_item, cookie );
    }

    /* Found nothing */
    return NULL;
}

void PrefsTreeCtrl::OnSelectTreeItem( wxTreeEvent& event )
{
    ConfigTreeData *config_data = NULL;

    if( event.GetOldItem() )
        config_data = FindModuleConfig( (ConfigTreeData *)GetItemData(
                                        event.GetOldItem() ) );
    if( config_data && config_data->panel )
    {
        config_data->panel->Hide();
        p_sizer->Remove( config_data->panel );
    }

    /* Don't use event.GetItem() because we also send fake events */
    config_data = FindModuleConfig( (ConfigTreeData *)GetItemData(
                                    GetSelection() ) );
    if( config_data )
    {
        if( !config_data->panel )
        {
            /* The panel hasn't been created yet. Let's do it. */
            config_data->panel =
                new PrefsPanel( p_parent, p_intf, p_prefs_dialog,
                                config_data->i_object_id,
                                config_data->psz_section,
                                config_data->psz_help );
            config_data->panel->SwitchAdvanced( b_advanced );
        }
        else
        {
            config_data->panel->SwitchAdvanced( b_advanced );
            config_data->panel->Show();
        }

        p_sizer->Add( config_data->panel, 3, wxEXPAND | wxALL, 0 );
        p_sizer->Layout();
    }
}

void PrefsTreeCtrl::OnAdvanced( wxCommandEvent& event )
{
    b_advanced = event.GetInt();

    ConfigTreeData *config_data = !GetSelection() ? NULL :
        FindModuleConfig( (ConfigTreeData *)GetItemData( GetSelection() ) );
    if( config_data  )
    {
        config_data->panel->Hide();
        p_sizer->Remove( config_data->panel );
    }

    if( GetSelection() )
    {
        wxTreeEvent event;
        OnSelectTreeItem( event );
    }
}

/*****************************************************************************
 * PrefsPanel class definition.
 *****************************************************************************/
PrefsPanel::PrefsPanel( wxWindow* parent, intf_thread_t *_p_intf,
                        PrefsDialog *_p_prefs_dialog,
                        int i_object_id, char *psz_section, char *psz_help )
  :  wxPanel( parent, -1, wxDefaultPosition, wxDefaultSize )
{
    module_config_t *p_item;

    wxStaticText *label;
    wxStaticText *help;
    wxArrayString array;

    module_t *p_module = NULL;

    /* Initializations */
    p_intf = _p_intf;
    p_prefs_dialog =_p_prefs_dialog,

    b_advanced = VLC_TRUE;
    SetAutoLayout( TRUE );

    wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );


    if( i_object_id == PLUGIN_ID || i_object_id == GENERAL_ID ||
        i_object_id == CAPABILITY_ID )
    {
        label = new wxStaticText( this, -1,wxU(_( psz_section )));
        wxFont heading_font = label->GetFont();
        heading_font.SetPointSize( heading_font.GetPointSize() + 5 );
        label->SetFont( heading_font );
        sizer->Add( label, 0, wxEXPAND | wxLEFT, 10 );
        sizer->Add( new wxStaticLine( this, 0 ), 0,
                    wxEXPAND | wxLEFT | wxRIGHT, 2 );

        help = new wxStaticText( this, -1, wxU(_( psz_help ) ) );
        sizer->Add( help ,0 ,wxEXPAND | wxALL, 5 );

        config_sizer = NULL; config_window = NULL;
    }
    else
    {
        /* Get a pointer to the module */
        p_module = (module_t *)vlc_object_get( p_intf,  i_object_id );
        if( p_module->i_object_type != VLC_OBJECT_MODULE )
        {
            /* 0OOoo something went really bad */
            return;
        }

        /* Enumerate config options and add corresponding config boxes
         * (submodules don't have config options, they are stored in the
         *  parent module) */
        if( p_module->b_submodule )
            p_item = ((module_t *)p_module->p_parent)->p_config;
        else
            p_item = p_module->p_config;

        /* Find the category if it has been specified */
        if( psz_section && p_item->i_type == CONFIG_HINT_CATEGORY )
        {
            while( !p_item->i_type == CONFIG_HINT_CATEGORY ||
                   strcmp( psz_section, p_item->psz_text ) )
            {
                if( p_item->i_type == CONFIG_HINT_END )
                    break;
                p_item++;
            }
        }

        /* Add a head title to the panel */
        label = new wxStaticText( this, -1,
                                  wxU(_(psz_section ? p_item->psz_text :
                                  p_module->psz_longname )));
        wxFont heading_font = label->GetFont();
        heading_font.SetPointSize( heading_font.GetPointSize() + 5 );
        label->SetFont( heading_font );
        sizer->Add( label, 0, wxEXPAND | wxLEFT, 10 );
        sizer->Add( new wxStaticLine( this, 0 ), 0,
                    wxEXPAND | wxLEFT | wxRIGHT, 2 );

        /* Now put all the config options into a scrolled window */
        config_sizer = new wxBoxSizer( wxVERTICAL );
        config_window = new wxScrolledWindow( this, -1, wxDefaultPosition,
            wxDefaultSize, wxSTATIC_BORDER | wxHSCROLL | wxVSCROLL );
        config_window->SetAutoLayout( TRUE );
        config_window->SetScrollRate( 5, 5 );

        if( p_item ) do
        {
            /* If a category has been specified, check we finished the job */
            if( psz_section && p_item->i_type == CONFIG_HINT_CATEGORY &&
                strcmp( psz_section, p_item->psz_text ) )
                break;

            ConfigControl *control =
                CreateConfigControl( VLC_OBJECT(p_intf),
                                     p_item, config_window );

            /* Don't add items that were not recognized */
            if( control == NULL ) continue;

            /* Add the config data to our array so we can keep a trace of it */
            config_array.Add( control );

            config_sizer->Add( control, 0, wxEXPAND | wxALL, 2 );
        }
        while( p_item->i_type != CONFIG_HINT_END && p_item++ );

        config_sizer->Layout();
        config_window->SetSizer( config_sizer );
        sizer->Add( config_window, 1, wxEXPAND | wxALL, 5 );

        /* And at last put a useful help string if available */
        if( psz_help && *psz_help )
        {
            sizer->Add( new wxStaticLine( this, 0 ), 0,
                        wxEXPAND | wxLEFT | wxRIGHT, 2 );
            help = new wxStaticText( this, -1, wxU(_(psz_help)),
                                     wxDefaultPosition, wxDefaultSize,
                                     wxALIGN_LEFT,
                                     wxT("") );
            sizer->Add( help ,0 ,wxEXPAND | wxALL, 5 );
        }

    }
    sizer->Layout();
    SetSizer( sizer );
}

void PrefsPanel::ApplyChanges()
{
    vlc_value_t val;

    for( size_t i = 0; i < config_array.GetCount(); i++ )
    {
        ConfigControl *control = config_array.Item(i);

        switch( control->GetType() )
        {
        case CONFIG_ITEM_STRING:
        case CONFIG_ITEM_FILE:
        case CONFIG_ITEM_DIRECTORY:
        case CONFIG_ITEM_MODULE:
            config_PutPsz( p_intf, control->GetName().mb_str(),
                           control->GetPszValue().mb_str() );
            break;
        case CONFIG_ITEM_KEY:
            /* So you don't need to restart to have the changes take effect */
            val.i_int = control->GetIntValue();
            var_Set( p_intf->p_vlc, control->GetName().mb_str(), val );
        case CONFIG_ITEM_INTEGER:
        case CONFIG_ITEM_BOOL:
            config_PutInt( p_intf, control->GetName().mb_str(),
                           control->GetIntValue() );
            break;
        case CONFIG_ITEM_FLOAT:
            config_PutFloat( p_intf, control->GetName().mb_str(),
                             control->GetFloatValue() );
            break;
        }
    }
}

void PrefsPanel::SwitchAdvanced( vlc_bool_t b_new_advanced )
{
    if( b_advanced == b_new_advanced ) return;

    if( config_sizer && config_window )
    {
        b_advanced = b_new_advanced;

        for( size_t i = 0; i < config_array.GetCount(); i++ )
        {
            ConfigControl *control = config_array.Item(i);
            if( control->IsAdvanced() )
            {
                control->Show( b_advanced );
                config_sizer->Show( control, b_advanced );
            }
        }

        config_sizer->Layout();
        config_window->FitInside();
        config_window->Refresh();
    }
    return;
}