This is the first step towards a better looking and more usable metadata GUI.

- A nicer comment widget shows a popup to edit the comment.
- A tag cloud replaces the ugly tagwidget from libnepomuk.
The plan is to use Dolphin as a testbed to optimize the look and then 
move at least the tagcloud to libnepomuk to make it available for all apps
since this is a common feature.

So please test it and provide feedback. The layout is still cluttered. So we
also need feedback on that. And of course on the usability.

Apart from the GUI Dolphin now uses the mass metadata update job to perform
metadata updates on many files in an async KJob without blocking the GUI.
This is another candidate for public API at some point.

svn path=/trunk/KDE/kdebase/apps/; revision=788565

1 files changed, 138 insertions, 0 deletions

diff --git a/src/tagcloud/resourcetaggingwidget.cpp b/src/tagcloud/resourcetaggingwidget.cpp
new file mode 100644
index 000000000..e7d6dfa78
--- /dev/null
+++ b/src/tagcloud/resourcetaggingwidget.cpp
@@ -0,0 +1,138 @@
+/*
+   This file is part of the Nepomuk KDE project.
+   Copyright (C) 2007 Sebastian Trueg <[email protected]>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License version 2 as published by the Free Software Foundation.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+ */
+
+#include "resourcetaggingwidget.h"
+#include "tagcloud.h"
+#include "taggingpopup.h"
+
+#include <QtGui/QVBoxLayout>
+#include <QtGui/QContextMenuEvent>
+#include <QtGui/QCursor>
+#include <QtGui/QAction>
+
+#include <KLocale>
+
+
+class Nepomuk::ResourceTaggingWidget::Private
+{
+public:
+    Nepomuk::Resource resource;
+
+    TagCloud* resourceTagCloud;
+    TaggingPopup* popup;
+
+    QList<Tag> resourceTags;
+
+    QAction* changeTagsAction;
+
+    void showTaggingPopup( const QPoint& );
+    void _k_slotShowTaggingPopup();
+};
+
+
+void Nepomuk::ResourceTaggingWidget::Private::showTaggingPopup( const QPoint& pos )
+{
+    popup->showAllTags();
+    resourceTags = resource.tags();
+    Q_FOREACH( Tag tag, resourceTags ) {
+        popup->setTagSelected( tag, true );
+    }
+
+    popup->exec( pos );
+
+    resource.setTags( resourceTags );
+}
+
+
+void Nepomuk::ResourceTaggingWidget::Private::_k_slotShowTaggingPopup()
+{
+    showTaggingPopup( QCursor::pos() );
+}
+
+
+Nepomuk::ResourceTaggingWidget::ResourceTaggingWidget( QWidget* parent )
+    : QWidget( parent ),
+      d( new Private() )
+{
+    QVBoxLayout* layout = new QVBoxLayout( this );
+    layout->setMargin( 0 );
+    d->resourceTagCloud = new TagCloud( this );
+    layout->addWidget( d->resourceTagCloud );
+
+    d->changeTagsAction = new QAction( i18n( "Change tags..." ), this );
+    d->resourceTagCloud->setCustomNewTagAction( d->changeTagsAction );
+
+    // the popup tag cloud
+    d->popup = new TaggingPopup;
+    d->popup->setSelectionEnabled( true );
+    d->popup->setNewTagButtonEnabled( true );
+
+    connect( d->popup, SIGNAL( tagToggled( const Nepomuk::Tag&, bool ) ),
+             this, SLOT( slotTagToggled( const Nepomuk::Tag&, bool ) ) );
+    connect( d->popup, SIGNAL( tagAdded( const Nepomuk::Tag& ) ),
+             this, SLOT( slotTagAdded( const Nepomuk::Tag& ) ) );
+
+    connect( d->changeTagsAction, SIGNAL( activated() ),
+             this, SLOT( _k_slotShowTaggingPopup() ) );
+
+    connect( d->resourceTagCloud, SIGNAL( tagClicked( const Nepomuk::Tag& ) ),
+             this, SIGNAL( tagClicked( const Nepomuk::Tag& ) ) );
+}
+
+
+Nepomuk::ResourceTaggingWidget::~ResourceTaggingWidget()
+{
+    delete d->popup;
+    delete d;
+}
+
+
+void Nepomuk::ResourceTaggingWidget::setResource( const Nepomuk::Resource& res )
+{
+    d->resource = res;
+    d->resourceTagCloud->showResourceTags( res );
+}
+
+
+void Nepomuk::ResourceTaggingWidget::slotTagToggled( const Nepomuk::Tag& tag, bool enabled )
+{
+    if ( enabled ) {
+        d->resourceTags.append( tag );
+    }
+    else {
+        d->resourceTags.removeAll( tag );
+    }
+    d->popup->hide();
+}
+
+
+void Nepomuk::ResourceTaggingWidget::slotTagAdded( const Nepomuk::Tag& tag )
+{
+    // assign it right away
+    d->resourceTags.append( tag );
+    d->resource.addTag( tag );
+}
+
+
+void Nepomuk::ResourceTaggingWidget::contextMenuEvent( QContextMenuEvent* e )
+{
+    d->showTaggingPopup( e->globalPos() );
+}
+
+#include "resourcetaggingwidget.moc"