src/tagcloud/resourcetaggingwidget.cpp

   1 /*
   2    This file is part of the Nepomuk KDE project.
   3    Copyright (C) 2007 Sebastian Trueg <trueg@kde.org>
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public
   7    License version 2 as published by the Free Software Foundation.
   8
   9    This library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public License
  15    along with this library; see the file COPYING.LIB.  If not, write to
  16    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17    Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "resourcetaggingwidget.h"
  21 #include "tagcloud.h"
  22 #include "taggingpopup.h"
  23
  24 #include <QtGui/QVBoxLayout>
  25 #include <QtGui/QContextMenuEvent>
  26 #include <QtGui/QCursor>
  27 #include <QtGui/QLabel>
  28
  29 #include <KLocale>
  30
  31
  32 class Nepomuk::ResourceTaggingWidget::Private
  33 {
  34 public:
  35     Nepomuk::Resource resource;
  36
  37     TagCloud* resourceTagCloud;
  38     TaggingPopup* popup;
  39
  40     QList<Tag> resourceTags;
  41
  42     void showTaggingPopup( const QPoint& );
  43     void _k_slotShowTaggingPopup();
  44 };
  45
  46
  47 void Nepomuk::ResourceTaggingWidget::Private::showTaggingPopup( const QPoint& pos )
  48 {
  49     popup->showAllTags();
  50     resourceTags = resource.tags();
  51     Q_FOREACH( Tag tag, resourceTags ) {
  52         popup->setTagSelected( tag, true );
  53     }
  54
  55     popup->exec( pos );
  56
  57     resource.setTags( resourceTags );
  58 }
  59
  60
  61 void Nepomuk::ResourceTaggingWidget::Private::_k_slotShowTaggingPopup()
  62 {
  63     showTaggingPopup( QCursor::pos() );
  64 }
  65
  66
  67 Nepomuk::ResourceTaggingWidget::ResourceTaggingWidget( QWidget* parent )
  68     : QWidget( parent ),
  69       d( new Private() )
  70 {
  71     QVBoxLayout* layout = new QVBoxLayout( this );
  72     layout->setMargin( 0 );
  73     d->resourceTagCloud = new TagCloud( this );
  74     layout->addWidget( d->resourceTagCloud );
  75     QLabel* changeTagsLabel = new QLabel( "<p align=center><a style=\"font-size:small;\" href=\"dummy\">" + i18n( "Change tags..." ) + "</a>", this );
  76     connect( changeTagsLabel, SIGNAL( linkActivated( const QString ) ),
  77              this, SLOT( _k_slotShowTaggingPopup() ) );
  78     layout->addWidget( changeTagsLabel );
  79
  80     // the popup tag cloud
  81     d->popup = new TaggingPopup;
  82     d->popup->setSelectionEnabled( true );
  83     d->popup->setNewTagButtonEnabled( true );
  84
  85     connect( d->popup, SIGNAL( tagToggled( const Nepomuk::Tag&, bool ) ),
  86              this, SLOT( slotTagToggled( const Nepomuk::Tag&, bool ) ) );
  87     connect( d->popup, SIGNAL( tagAdded( const Nepomuk::Tag& ) ),
  88              this, SLOT( slotTagAdded( const Nepomuk::Tag& ) ) );
  89
  90     connect( d->resourceTagCloud, SIGNAL( tagClicked( const Nepomuk::Tag& ) ),
  91              this, SIGNAL( tagClicked( const Nepomuk::Tag& ) ) );
  92 }
  93
  94
  95 Nepomuk::ResourceTaggingWidget::~ResourceTaggingWidget()
  96 {
  97     delete d->popup;
  98     delete d;
  99 }
 100
 101
 102 void Nepomuk::ResourceTaggingWidget::setResource( const Nepomuk::Resource& res )
 103 {
 104     d->resource = res;
 105     d->resourceTagCloud->showResourceTags( res );
 106 }
 107
 108
 109 void Nepomuk::ResourceTaggingWidget::slotTagToggled( const Nepomuk::Tag& tag, bool enabled )
 110 {
 111     if ( enabled ) {
 112         d->resourceTags.append( tag );
 113     }
 114     else {
 115         d->resourceTags.removeAll( tag );
 116     }
 117     d->popup->hide();
 118 }
 119
 120
 121 void Nepomuk::ResourceTaggingWidget::slotTagAdded( const Nepomuk::Tag& tag )
 122 {
 123     // assign it right away
 124     d->resourceTags.append( tag );
 125     d->resource.addTag( tag );
 126 }
 127
 128
 129 void Nepomuk::ResourceTaggingWidget::contextMenuEvent( QContextMenuEvent* e )
 130 {
 131     d->showTaggingPopup( e->globalPos() );
 132 }
 133
 134 #include "resourcetaggingwidget.moc"