messages.cpp 8.33 KB
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/*****************************************************************************
 * Messages.cpp : Information about an item
 ****************************************************************************
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 * Copyright (C) 2006-2007 the VideoLAN team
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 * $Id$
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 *
 * Authors: Jean-Baptiste Kempf <jb (at) videolan.org>
 *
 * 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.
 *****************************************************************************/
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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
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#include "dialogs/messages.hpp"
#include "dialogs_provider.hpp"
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#include <QSpacerItem>
#include <QSpinBox>
#include <QLabel>
#include <QTextEdit>
#include <QTextCursor>
#include <QFileDialog>
#include <QTextStream>
#include <QMessageBox>
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#include <QTabWidget>
#include <QTreeWidget>
#include <QTreeWidgetItem>
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#include <QHeaderView>
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MessagesDialog *MessagesDialog::instance = NULL;

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MessagesDialog::MessagesDialog( intf_thread_t *_p_intf)
               : QVLCFrame( _p_intf )
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{
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    setWindowTitle( qtr( "Messages" ) );
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    /* General widgets */
    QGridLayout *mainLayout = new QGridLayout( this );
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    mainTab = new QTabWidget( this );
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    mainTab->setTabPosition( QTabWidget::North );

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    /* Messages */
    QWidget     *msgWidget = new QWidget;
    QGridLayout *msgLayout = new QGridLayout( msgWidget );

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    messages = new QTextEdit();
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    messages->setReadOnly( true );
    messages->setGeometry( 0, 0, 440, 600 );
    messages->setHorizontalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
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    msgLayout->addWidget( messages, 0, 0, 1, 0 );
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    mainTab->addTab( msgWidget, qtr( "Messages" ) );
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    ON_TIMEOUT( updateLog() );
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    /* Modules tree */
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    QWidget     *treeWidget = new QWidget;
    QGridLayout *treeLayout = new QGridLayout( treeWidget );

    modulesTree = new QTreeWidget();
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    modulesTree->header()->hide();
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    treeLayout->addWidget( modulesTree, 0, 0, 1, 0 );
    mainTab->addTab( treeWidget, qtr( "Modules tree" ) );

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    /* Buttons and general layout */
    QPushButton *closeButton = new QPushButton( qtr( "&Close" ) );
    closeButton->setDefault( true );
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    clearUpdateButton = new QPushButton( qtr( "&Clear" ) );
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    saveLogButton = new QPushButton( qtr( "&Save as..." ) );

    verbosityBox = new QSpinBox();
    verbosityBox->setRange( 0, 2 );
    verbosityBox->setValue( config_GetInt( p_intf, "verbose" ) );
    verbosityBox->setWrapping( true );
    verbosityBox->setMaximumWidth( 50 );

    verbosityLabel = new QLabel( qtr( "Verbosity Level" ) );

    mainLayout->addWidget( mainTab, 0, 0, 1, 0 );
    mainLayout->addWidget( verbosityLabel, 1, 0, 1, 1 );
    mainLayout->addWidget( verbosityBox, 1, 1 );
    mainLayout->addWidget( saveLogButton, 1, 3 );
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    mainLayout->addWidget( clearUpdateButton, 1, 4 );
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    mainLayout->addWidget( closeButton, 1, 5 );

    BUTTONACT( closeButton, hide() );
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    BUTTONACT( clearUpdateButton, clearOrUpdate() );
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    BUTTONACT( saveLogButton, save() );
    CONNECT( mainTab, currentChanged( int ),
             this, updateTab( int ) );
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    /* General action */
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    readSettings( "Messages", QSize( 600, 450 ) );
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}

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void MessagesDialog::updateTab( int index )
{
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    /* Second tab : modules tree */
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    if( index == 1 )
    {
        verbosityLabel->hide();
        verbosityBox->hide();
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        clearUpdateButton->setText( qtr( "&Update" ) );
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        saveLogButton->hide();
        updateTree();
    }
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    /* First tab : messages */
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    else
    {
        verbosityLabel->show();
        verbosityBox->show();
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        clearUpdateButton->setText( qtr( "&Clear" ) );
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        saveLogButton->show();
    }
}

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void MessagesDialog::updateLog()
{
    msg_subscription_t *p_sub = p_intf->p_sys->p_sub;
    int i_start;

    vlc_mutex_lock( p_sub->p_lock );
    int i_stop = *p_sub->pi_stop;
    vlc_mutex_unlock( p_sub->p_lock );

    if( p_sub->i_start != i_stop )
    {
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        messages->textCursor().movePosition( QTextCursor::End );

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        for( i_start = p_sub->i_start;
                i_start != i_stop;
                i_start = (i_start+1) % VLC_MSG_QSIZE )
        {
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            if( p_sub->p_msg[i_start].i_type == VLC_MSG_INFO ||
                p_sub->p_msg[i_start].i_type == VLC_MSG_ERR ||
                p_sub->p_msg[i_start].i_type == VLC_MSG_WARN &&
                    verbosityBox->value() >= 1 ||
                p_sub->p_msg[i_start].i_type == VLC_MSG_DBG &&
                    verbosityBox->value() >= 2 )
            {
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                messages->setFontItalic( true );
                messages->setTextColor( "darkBlue" );
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                messages->insertPlainText( qfu( p_sub->p_msg[i_start].psz_module ) );
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            }
            else
                continue;
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            switch( p_sub->p_msg[i_start].i_type )
            {
                case VLC_MSG_INFO:
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                    messages->setTextColor( "blue" );
                    messages->insertPlainText( " info: " );
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                    break;
                case VLC_MSG_ERR:
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                    messages->setTextColor( "red" );
                    messages->insertPlainText( " error: " );
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                    break;
                case VLC_MSG_WARN:
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                    messages->setTextColor( "green" );
                    messages->insertPlainText( " warning: " );
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                    break;
                case VLC_MSG_DBG:
                default:
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                    messages->setTextColor( "grey" );
                    messages->insertPlainText( " debug: " );
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                    break;
            }

            /* Add message Regular black Font */
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            messages->setFontItalic( false );
            messages->setTextColor( "black" );
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            messages->insertPlainText( qfu(p_sub->p_msg[i_start].psz_msg) );
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            messages->insertPlainText( "\n" );
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        }
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        messages->ensureCursorVisible();
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        vlc_mutex_lock( p_sub->p_lock );
        p_sub->i_start = i_start;
        vlc_mutex_unlock( p_sub->p_lock );
    }
}

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void MessagesDialog::buildTree( QTreeWidgetItem *parentItem,
                                vlc_object_t *p_obj )
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{
    QTreeWidgetItem *item;

    if( parentItem )
        item = new QTreeWidgetItem( parentItem );
    else
        item = new QTreeWidgetItem( modulesTree );

    if( p_obj->psz_object_name )
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        item->setText( 0, qfu( p_obj->psz_object_type ) + " \"" +
                       qfu( p_obj->psz_object_name ) + "\" (" +
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                       QString::number(p_obj->i_object_id) + ")" );
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    else
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        item->setText( 0, qfu( p_obj->psz_object_type ) + " (" +
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                       QString::number(p_obj->i_object_id) + ")" );
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    item->setExpanded( true );

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    vlc_list_t *l = vlc_list_children( p_obj );
    for( int i=0; i < l->i_count; i++ )
        buildTree( item, l->p_values[i].p_object );
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    vlc_list_release( l );
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}

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void MessagesDialog::clearOrUpdate()
{
    if( mainTab->currentIndex() )
        updateTree();
    else
        clear();
}

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void MessagesDialog::updateTree()
{
    modulesTree->clear();
    buildTree( NULL, VLC_OBJECT( p_intf->p_libvlc ) );
}

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void MessagesDialog::clear()
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{
    messages->clear();
}

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bool MessagesDialog::save()
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{
    QString saveLogFileName = QFileDialog::getSaveFileName(
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            this, qtr( "Choose a filename to save the logs under..." ),
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            qfu( config_GetHomeDir() ),
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            qtr( "Texts / Logs (*.log *.txt);; All (*.*) ") );
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    if( !saveLogFileName.isNull() )
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    {
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        QFile file( saveLogFileName );
        if ( !file.open( QFile::WriteOnly | QFile::Text ) ) {
            QMessageBox::warning( this, qtr( "Application" ),
                    qtr( "Cannot write file %1:\n%2." )
                    .arg( saveLogFileName )
                    .arg( file.errorString() ) );
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            return false;
        }

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        QTextStream out( &file );
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        out << messages->toPlainText() << "\n";

        return true;
    }
    return false;
}