listviews-main-cpp.html

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}

// -----------------------------------------------------------------

FolderListItem::FolderListItem( <a href="qlistview.html">QListView</a> *parent, Folder *f )
    : <a href="qlistviewitem.html">QListViewItem</a>( parent )
{
    myFolder = f;
    <a href="qlistviewitem.html#808e84">setText</a>( 0, f-&gt;folderName() );

    if ( myFolder-&gt;children() )
        <a href=#32>insertSubFolders</a>( myFolder-&gt;children() );
}

FolderListItem::FolderListItem( FolderListItem *parent, Folder *f )
    : <a href="qlistviewitem.html">QListViewItem</a>( parent )
{
    myFolder = f;

    <a href="qlistviewitem.html#808e84">setText</a>( 0, f-&gt;folderName() );

    if ( myFolder-&gt;children() )
        <a href=#32>insertSubFolders</a>( myFolder-&gt;children() );
}

void <a name="32"></a>FolderListItem::insertSubFolders( const QObjectList *lst )
{
    Folder *f;
    for ( f = ( Folder* )( ( QObjectList* )lst )-&gt;first(); f; f = ( Folder* )( ( QObjectList* )lst )-&gt;next() )
        (void)new FolderListItem( this, f );
}

// -----------------------------------------------------------------

MessageListItem::MessageListItem( <a href="qlistview.html">QListView</a> *parent, Message *m )
    : <a href="qlistviewitem.html">QListViewItem</a>( parent )
{
    myMessage = m;
    <a href="qlistviewitem.html#808e84">setText</a>( 0, myMessage-&gt;header().sender() );
    <a href="qlistviewitem.html#808e84">setText</a>( 1, myMessage-&gt;header().subject() );
    <a href="qlistviewitem.html#808e84">setText</a>( 2, myMessage-&gt;header().datetime().toString() );
}

void <a name="31"></a>MessageListItem::paintCell( <a href="qpainter.html">QPainter</a> *p, const QColorGroup &amp;cg,
                                 int column, int width, int alignment )
{
    <a href="qcolorgroup.html">QColorGroup</a> _cg( cg );
    <a href="qcolor.html">QColor</a> c = _cg.<a href="qcolorgroup.html#ddea87">text</a>();

    if ( myMessage-&gt;state() == Message::Unread )
        _cg.<a href="qcolorgroup.html#73080d">setColor</a>( QColorGroup::Text, Qt::red );

    <a href="qlistviewitem.html#0ab6b5">QListViewItem::paintCell</a>( p, _cg, column, width, alignment );

    _cg.<a href="qcolorgroup.html#73080d">setColor</a>( QColorGroup::Text, c );
}

// -----------------------------------------------------------------

ListViews::ListViews( <a href="qwidget.html">QWidget</a> *parent, const char *name )
    : <a href="qsplitter.html">QSplitter</a>( Qt::Horizontal, parent, name )
{
    lstFolders.setAutoDelete( TRUE );

    folders = new <a href="qlistview.html">QListView</a>( this );
    folders-&gt;header()-&gt;setClickEnabled( FALSE );
    folders-&gt;addColumn( "Folder" );

    <a href=#25>initFolders</a>();
    <a href=#27>setupFolders</a>();

    folders-&gt;setRootIsDecorated( TRUE );
    <a href="qsplitter.html#33bf83">setResizeMode</a>( folders, QSplitter::KeepSize );

    <a href="qsplitter.html">QSplitter</a> *vsplitter = new <a href="qsplitter.html">QSplitter</a>( Qt::Vertical, this );

    messages = new <a href="qlistview.html">QListView</a>( vsplitter );
    messages-&gt;addColumn( "Sender" );
    messages-&gt;addColumn( "Subject" );
    messages-&gt;addColumn( "Date" );
    messages-&gt;setColumnAlignment( 1, Qt::AlignRight );
    messages-&gt;setAllColumnsShowFocus( TRUE );
    messages-&gt;setShowSortIndicator( TRUE );
    menu = new <a href="qpopupmenu.html">QPopupMenu</a>( messages );
    for( int i = 1; i &lt;= 10; i++ )
        menu-&gt;insertItem( <a href="qstring.html">QString</a>( "Context Item %1" ).arg( i ) );
    <a href="qobject.html#fbde73">connect</a>(messages, SIGNAL( rightButtonPressed( <a href="qlistviewitem.html">QListViewItem</a> *, const QPoint&amp; , int ) ),
            this, SLOT( <a href=#28>slotRMB</a>( <a href="qlistviewitem.html">QListViewItem</a> *, const QPoint &amp;, int ) ) );
    vsplitter-&gt;<a href="qsplitter.html#33bf83">setResizeMode</a>( messages, QSplitter::KeepSize );

    message = new <a href="qlabel.html">QLabel</a>( vsplitter );
    message-&gt;setAlignment( Qt::AlignTop );
    message-&gt;setBackgroundMode( PaletteBase );

    <a href="qobject.html#fbde73">connect</a>( folders, SIGNAL( selectionChanged( <a href="qlistviewitem.html">QListViewItem</a>* ) ),
             this, SLOT( <a href=#29>slotFolderChanged</a>( <a href="qlistviewitem.html">QListViewItem</a>* ) ) );
    <a href="qobject.html#fbde73">connect</a>( messages, SIGNAL( selectionChanged() ),
             this, SLOT( <a href=#30>slotMessageChanged</a>() ) );
    <a href="qobject.html#fbde73">connect</a>( messages, SIGNAL( currentChanged( <a href="qlistviewitem.html">QListViewItem</a> * ) ),
             this, SLOT( <a href=#30>slotMessageChanged</a>() ) );

    messages-&gt;setSelectionMode( QListView::Extended );
    // some preparations
    folders-&gt;firstChild()-&gt;setOpen( TRUE );
    folders-&gt;firstChild()-&gt;firstChild()-&gt;setOpen( TRUE );
    folders-&gt;setCurrentItem( folders-&gt;firstChild()-&gt;firstChild()-&gt;firstChild() );
    folders-&gt;setSelected( folders-&gt;firstChild()-&gt;firstChild()-&gt;firstChild(), TRUE );

    messages-&gt;setSelected( messages-&gt;firstChild(), TRUE );
    messages-&gt;setCurrentItem( messages-&gt;firstChild() );
    message-&gt;setMargin( 5 );

    <a href="qvaluelist.html">QValueList</a>&lt;int&gt; lst;
    lst.<a href="qvaluelist.html#d68b11">append</a>( 170 );
    <a href="qsplitter.html#8fd8cf">setSizes</a>( lst );
}

void <a name="25"></a>ListViews::initFolders()
{
    unsigned int mcount = 1;

    for ( unsigned int i = 1; i &lt; 20; i++ ) {
        <a href="qstring.html">QString</a> str;
        str = QString( "Folder %1" ).arg( i );
        Folder *f = new Folder( 0, str );
        for ( unsigned int j = 1; j &lt; 5; j++ ) {
            <a href="qstring.html">QString</a> str2;
            str2 = QString( "Sub Folder %1" ).arg( j );
            Folder *f2 = new Folder( f, str2 );
            for ( unsigned int k = 1; k &lt; 3; k++ ) {
                <a href="qstring.html">QString</a> str3;
                str3 = QString( "Sub Sub Folder %1" ).arg( k );
                Folder *f3 = new Folder( f2, str3 );
                <a href=#26>initFolder</a>( f3, mcount );
            }
        }
        lstFolders.append( f );
    }
}

void <a name="26"></a>ListViews::initFolder( Folder *folder, unsigned int &amp;count )
{
    for ( unsigned int i = 0; i &lt; 15; i++, count++ ) {
        <a href="qstring.html">QString</a> str;
        str = QString( "Message %1  " ).arg( count );
        <a href="qdatetime.html">QDateTime</a> dt = QDateTime::currentDateTime();
        dt = dt.<a href="qdatetime.html#a8711a">addSecs</a>( 60 * count );
        MessageHeader mh( "Trolltech &lt;[e-mail]&gt;  ", str, dt );

        <a href="qstring.html">QString</a> body;
        body = QString( "This is the message number %1 of this application, \n"
                        "which shows how to use QListViews, QListViewItems, \n"
                        "QSplitters and so on. The code should show how easy\n"
                        "this can be done in Qt." ).arg( count );
        Message *msg = new Message( mh, body );
        folder-&gt;addMessage( msg );
    }
}

void <a name="27"></a>ListViews::setupFolders()
{
    folders-&gt;clear();

    for ( Folder* f = lstFolders.first(); f; f = lstFolders.next() )
        (void)new FolderListItem( folders, f );
}

void <a name="28"></a>ListViews::slotRMB( <a href="qlistviewitem.html">QListViewItem</a>* Item, const QPoint &amp; point, int )
{
    if( Item )
        menu-&gt;popup( point );
}

void <a name="29"></a>ListViews::slotFolderChanged( <a href="qlistviewitem.html">QListViewItem</a> *i )
{
    if ( !i )
        return;
    messages-&gt;clear();
    message-&gt;setText( "" );

    FolderListItem *item = ( FolderListItem* )i;

    for ( Message* msg = item-&gt;folder()-&gt;firstMessage(); msg;
          msg = item-&gt;folder()-&gt;nextMessage() )
        (void)new MessageListItem( messages, msg );
}

void <a name="30"></a>ListViews::slotMessageChanged()
{
    <a href="qlistviewitem.html">QListViewItem</a> *i = messages-&gt;currentItem();
    if ( !i )
        return;

    if ( !i-&gt;<a href="qlistviewitem.html#35710b">isSelected</a>() ) {
        message-&gt;setText( "" );
        return;
    }

    MessageListItem *item = ( MessageListItem* )i;
    Message *msg = item-&gt;message();

    <a href="qstring.html">QString</a> text;
    <a href="qstring.html">QString</a> tmp = msg-&gt;header().sender();
    tmp = tmp.<a href="qstring.html#034e6e">replace</a>( <a href="qregexp.html">QRegExp</a>( "[&lt;]" ), "&amp;lt;" );
    tmp = tmp.<a href="qstring.html#034e6e">replace</a>( <a href="qregexp.html">QRegExp</a>( "[&gt;]" ), "&amp;gt;" );
    text = QString( "&lt;b&gt;&lt;i&gt;From:&lt;/i&gt;&lt;/b&gt; &lt;a href=\"mailto:[e-mail]\"&gt;%1&lt;/a&gt;&lt;br&gt;"
                    "&lt;b&gt;&lt;i&gt;Subject:&lt;/i&gt;&lt;/b&gt; &lt;big&gt;&lt;big&gt;&lt;b&gt;%2&lt;/b&gt;&lt;/big&gt;&lt;/big&gt;&lt;br&gt;"
                    "&lt;b&gt;&lt;i&gt;Date:&lt;/i&gt;&lt;/b&gt; %3&lt;br&gt;&lt;br&gt;"
                    "%4" ).
           arg( tmp ).arg( msg-&gt;header().subject() ).
           arg( msg-&gt;header().datetime().toString() ).arg( msg-&gt;body() );

    message-&gt;setText( text );

    msg-&gt;setState( Message::Read );
}
</pre>


  <hr>

  Main:
<pre>/****************************************************************************
** &#36;Id&#58; qt/examples/listviews/main.cpp   2.3.8   edited 2004-05-12 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "listviews.h"
#include &lt;<a name="qapplication.h"></a><a href="qapplication-h.html">qapplication.h</a>&gt;

int main( int argc, char **argv )
{
    <a name="QApplication"></a><a href="qapplication.html">QApplication</a> a( argc, argv );

    ListViews listViews;
    listViews.<a name="resize"></a><a href="qwidget.html#ff9d07">resize</a>( 640, 480 );
    listViews.<a name="setCaption"></a><a href="qwidget.html#d6a291">setCaption</a>( "Qt Example - Listview" );
    a.<a name="setMainWidget"></a><a href="qapplication.html#7ad759">setMainWidget</a>( &amp;listViews );
    listViews.<a name="show"></a><a href="qwidget.html#200ee5">show</a>();

    return a.<a name="exec"></a><a href="qapplication.html#84c7bf">exec</a>();
}
</pre>
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