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/*****************************************************************************
* Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at> *
* *
* 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 "ktaggingwidget_p.h"
#include "kedittagsdialog_p.h"
#include <kglobalsettings.h>
#include <klocale.h>
#include <kurl.h>
#include <QEvent>
#include <QLabel>
#include <QVBoxLayout>
KTaggingWidget::KTaggingWidget(QWidget* parent) :
QWidget(parent),
m_readOnly(false),
m_label(0),
m_tags(),
m_tagsText()
{
m_label = new QLabel(this);
m_label->setFont(KGlobalSettings::smallestReadableFont());
m_label->setWordWrap(true);
m_label->setAlignment(Qt::AlignTop);
connect(m_label, SIGNAL(linkActivated(const QString&)), this, SLOT(slotLinkActivated(const QString&)));
QVBoxLayout* layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->addWidget(m_label);
setTags(QList<Nepomuk::Tag>());
}
KTaggingWidget::~KTaggingWidget()
{
}
void KTaggingWidget::setTags(const QList<Nepomuk::Tag>& tags)
{
m_tags = tags;
m_tagsText.clear();
bool first = true;
foreach (const Nepomuk::Tag& tag, m_tags) {
if (!first) {
m_tagsText += ", ";
}
if (m_readOnly) {
m_tagsText += tag.genericLabel();
} else {
// use the text color for the tag-links, to create a visual difference
// to the semantically different "Change..." link
const QColor linkColor = palette().text().color();
const char* link = "<a style=\"color:%1;\" href=\"%2\">%3</a>";
m_tagsText += QString::fromLatin1(link).arg(linkColor.name(),
KUrl(tag.resourceUri()).url(),
tag.genericLabel());
}
first = false;
}
QString text;
if (m_tagsText.isEmpty()) {
if (m_readOnly) {
text = "-";
} else {
text = "<a href=\"changeTags\">" + i18nc("@label", "Add Tags...") + "</a>";
}
} else {
if (m_readOnly) {
text = m_tagsText;
} else {
text += m_tagsText + " <a href=\"changeTags\">" + i18nc("@label", "Change...") + "</a>";
}
}
m_label->setText(text);
}
QList<Nepomuk::Tag> KTaggingWidget::tags() const
{
return m_tags;
}
void KTaggingWidget::setReadOnly(bool readOnly)
{
m_readOnly = readOnly;
setTags(m_tags);
}
bool KTaggingWidget::isReadOnly() const
{
return m_readOnly;
}
bool KTaggingWidget::event(QEvent* event)
{
if (event->type() == QEvent::Polish) {
m_label->setForegroundRole(foregroundRole());
}
return QWidget::event(event);
}
void KTaggingWidget::slotLinkActivated(const QString& link)
{
if (link != QLatin1String("changeTags")) {
emit tagActivated(Nepomuk::Tag(KUrl(link)));
return;
}
KEditTagsDialog dialog(m_tags, this, Qt::Dialog);
KConfigGroup dialogConfig(KGlobal::config(), "Nepomuk KEditTagsDialog");
dialog.restoreDialogSize(dialogConfig);
if (dialog.exec() == QDialog::Accepted) {
const QList<Nepomuk::Tag> oldTags = m_tags;
m_tags = dialog.tags();
if (oldTags.count() != m_tags.count()) {
emit tagsChanged(m_tags);
} else {
// The number of tags is equal. Check whether the
// content of the tags are also equal:
const int tagsCount = m_tags.count();
for (int i = 0; i < tagsCount; ++i) {
if (oldTags[i].genericLabel() != m_tags[i].genericLabel()) {
// at least one tag has been changed
emit tagsChanged(m_tags);
break;
}
}
}
}
dialog.saveDialogSize(dialogConfig, KConfigBase::Persistent);
}
#include "ktaggingwidget_p.moc"
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