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/QAction>
  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     QAction* changeTagsAction;
  43
  44     void showTaggingPopup( const QPoint& );
  45     void _k_slotShowTaggingPopup();
  46 };
  47
  48
  49 void Nepomuk::ResourceTaggingWidget::Private::showTaggingPopup( const QPoint& pos )
  50 {
  51     popup->showAllTags();
  52     resourceTags = resource.tags();
  53     Q_FOREACH( Tag tag, resourceTags ) {
  54         popup->setTagSelected( tag, true );
  55     }
  56
  57     popup->exec( pos );
  58
  59     resource.setTags( resourceTags );
  60 }
  61
  62
  63 void Nepomuk::ResourceTaggingWidget::Private::_k_slotShowTaggingPopup()
  64 {
  65     showTaggingPopup( QCursor::pos() );
  66 }
  67
  68
  69 Nepomuk::ResourceTaggingWidget::ResourceTaggingWidget( QWidget* parent )
  70     : QWidget( parent ),
  71       d( new Private() )
  72 {
  73     QVBoxLayout* layout = new QVBoxLayout( this );
  74     layout->setMargin( 0 );
  75     d->resourceTagCloud = new TagCloud( this );
  76     layout->addWidget( d->resourceTagCloud );
  77
  78     d->changeTagsAction = new QAction( i18n( "Change tags..." ), this );
  79     d->resourceTagCloud->setCustomNewTagAction( d->changeTagsAction );
  80
  81     // the popup tag cloud
  82     d->popup = new TaggingPopup;
  83     d->popup->setSelectionEnabled( true );
  84     d->popup->setNewTagButtonEnabled( true );
  85
  86     connect( d->popup, SIGNAL( tagToggled( const Nepomuk::Tag&, bool ) ),
  87              this, SLOT( slotTagToggled( const Nepomuk::Tag&, bool ) ) );
  88     connect( d->popup, SIGNAL( tagAdded( const Nepomuk::Tag& ) ),
  89              this, SLOT( slotTagAdded( const Nepomuk::Tag& ) ) );
  90
  91     connect( d->changeTagsAction, SIGNAL( activated() ),
  92              this, SLOT( _k_slotShowTaggingPopup() ) );
  93
  94     connect( d->resourceTagCloud, SIGNAL( tagClicked( const Nepomuk::Tag& ) ),
  95              this, SIGNAL( tagClicked( const Nepomuk::Tag& ) ) );
  96 }
  97
  98
  99 Nepomuk::ResourceTaggingWidget::~ResourceTaggingWidget()
 100 {
 101     delete d->popup;
 102     delete d;
 103 }
 104
 105
 106 void Nepomuk::ResourceTaggingWidget::setResource( const Nepomuk::Resource& res )
 107 {
 108     d->resource = res;
 109     d->resourceTagCloud->showResourceTags( res );
 110 }
 111
 112
 113 void Nepomuk::ResourceTaggingWidget::slotTagToggled( const Nepomuk::Tag& tag, bool enabled )
 114 {
 115     if ( enabled ) {
 116         d->resourceTags.append( tag );
 117     }
 118     else {
 119         d->resourceTags.removeAll( tag );
 120     }
 121     d->popup->hide();
 122 }
 123
 124
 125 void Nepomuk::ResourceTaggingWidget::slotTagAdded( const Nepomuk::Tag& tag )
 126 {
 127     // assign it right away
 128     d->resourceTags.append( tag );
 129     d->resource.addTag( tag );
 130 }
 131
 132
 133 void Nepomuk::ResourceTaggingWidget::contextMenuEvent( QContextMenuEvent* e )
 134 {
 135     d->showTaggingPopup( e->globalPos() );
 136 }
 137
 138 #include "resourcetaggingwidget.moc"