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diff --git a/src/plugins/valgrind/suppressiondialog.cpp b/src/plugins/valgrind/suppressiondialog.cpp
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+++ b/src/plugins/valgrind/suppressiondialog.cpp
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+/**************************************************************************
+**
+** This file is part of Qt Creator Instrumentation Tools
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Author: Milian Wolff, KDAB ([email protected])
+**
+** Contact: Nokia Corporation ([email protected])
+**
+**
+** GNU Lesser General Public License Usage
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at [email protected].
+**
+**************************************************************************/
+
+#include "suppressiondialog.h"
+#include "ui_suppressiondialog.h"
+
+#include "memcheckerrorview.h"
+#include "memchecksettings.h"
+
+#include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/session.h>
+#include <projectexplorer/project.h>
+#include <projectexplorer/projectnodes.h>
+
+#include <utils/pathchooser.h>
+#include <utils/fileutils.h>
+#include <utils/qtcassert.h>
+
+#include <QtCore/QFile>
+#include <QtGui/QPushButton>
+
+#include <valgrind/xmlprotocol/suppression.h>
+#include <valgrind/xmlprotocol/errorlistmodel.h>
+#include <valgrind/xmlprotocol/stack.h>
+#include <valgrind/xmlprotocol/frame.h>
+
+using namespace Analyzer;
+using namespace Valgrind::XmlProtocol;
+
+namespace {
+
+QString suppressionText(const Error &error)
+{
+    Suppression sup(error.suppression());
+
+    // workaround: https://bugs.kde.org/show_bug.cgi?id=255822
+    if (sup.frames().size() >= 24) {
+        sup.setFrames(sup.frames().mid(0, 23));
+    }
+    QTC_ASSERT(sup.frames().size() < 24, qt_noop());
+
+    // try to set some useful name automatically, instead of "insert_name_here"
+    // we take the last stack frame and append the suppression kind, e.g.:
+    // QDebug::operator<<(bool) [Memcheck:Cond]
+    if (!error.stacks().isEmpty() && !error.stacks().first().frames().isEmpty()) {
+        const Frame &frame = error.stacks().first().frames().first();
+
+        QString newName;
+        if (!frame.functionName().isEmpty())
+            newName = frame.functionName();
+        else if (!frame.object().isEmpty())
+            newName = frame.object();
+
+        if (!newName.isEmpty()) {
+            sup.setName(newName + '[' + sup.kind() + ']');
+        }
+    }
+
+    return sup.toString();
+}
+
+/// @p error input error, which might get hidden when it has the same stack
+/// @p suppressed the error that got suppressed already
+static bool equalSuppression(const Error &error, const Error &suppressed)
+{
+    if (error.kind() != suppressed.kind() || error.suppression().isNull())
+        return false;
+
+    const SuppressionFrames errorFrames = error.suppression().frames();
+    const SuppressionFrames suppressedFrames = suppressed.suppression().frames();
+
+    // limit to 23 frames, see: https://bugs.kde.org/show_bug.cgi?id=255822
+    if (qMin(23, suppressedFrames.size()) > errorFrames.size())
+        return false;
+
+    int frames = 23;
+    if (errorFrames.size() < frames)
+        frames = errorFrames.size();
+
+    if (suppressedFrames.size() < frames)
+        frames = suppressedFrames.size();
+
+    for (int i = 0; i < frames; ++i) {
+        if (errorFrames.at(i) != suppressedFrames.at(i))
+            return false;
+    }
+
+    return true;
+}
+
+bool sortIndizesReverse(const QModelIndex &l, const QModelIndex &r)
+{
+    return l.row() > r.row();
+}
+
+} // namespace anoe
+
+namespace Valgrind {
+namespace Internal {
+
+SuppressionDialog::SuppressionDialog(MemcheckErrorView *view, QWidget *parent, Qt::WindowFlags f)
+  : QDialog(parent, f),
+    m_view(view),
+    m_ui(new Ui::SuppressionDialog),
+    m_settings(view->settings()),
+    m_cleanupIfCanceled(false)
+{
+    m_ui->setupUi(this);
+
+    ///NOTE: pathchooser requires existing files...
+    QFile defaultSuppFile(view->defaultSuppressionFile());
+    if (!defaultSuppFile.exists()) {
+        if (defaultSuppFile.open(QIODevice::WriteOnly)) {
+            defaultSuppFile.close();
+            m_cleanupIfCanceled = true;
+        }
+    }
+
+    //NOTE: first set kind, then set path since otherwise the file will be seen as "invalid"
+    m_ui->fileChooser->setExpectedKind(Utils::PathChooser::File);
+    m_ui->fileChooser->setPath(defaultSuppFile.fileName());
+    m_ui->fileChooser->setPromptDialogFilter(QLatin1String("*.supp"));
+    m_ui->fileChooser->setPromptDialogTitle(tr("Select Suppression File"));
+    connect(m_ui->fileChooser, SIGNAL(validChanged()),
+            SLOT(validate()));
+    connect(m_ui->suppressionEdit->document(), SIGNAL(contentsChanged()),
+            SLOT(validate()));
+
+    QString suppressions;
+    QModelIndexList indizes = m_view->selectionModel()->selectedRows();
+    if (indizes.isEmpty() && m_view->selectionModel()->currentIndex().isValid()) {
+        // can happen when using arrow keys to navigate and shortcut to trigger suppression
+        indizes << m_view->selectionModel()->currentIndex();
+    }
+    foreach (const QModelIndex &index, indizes) {
+        Error error = m_view->model()->data(index, ErrorListModel::ErrorRole).value<Error>();
+        if (!error.suppression().isNull())
+            m_errors << error;
+    }
+
+    foreach (const Error &error, m_errors)
+        suppressions += suppressionText(error);
+
+    m_ui->suppressionEdit->setPlainText(suppressions);
+
+    setWindowTitle(tr("Save Suppression"));
+}
+
+bool SuppressionDialog::shouldShow() const
+{
+    return !m_errors.isEmpty();
+}
+
+void SuppressionDialog::accept()
+{
+    const QString path = m_ui->fileChooser->path();
+    QTC_ASSERT(!path.isEmpty(), return);
+    QTC_ASSERT(!m_ui->suppressionEdit->toPlainText().trimmed().isEmpty(), return);
+
+    Utils::FileSaver saver(path, QIODevice::Append);
+    QTextStream stream(saver.file());
+    stream << m_ui->suppressionEdit->toPlainText();
+    saver.setResult(&stream);
+    if (!saver.finalize(this))
+        return;
+
+    // add file to project (if there is a project that contains this file on the file system)
+    ProjectExplorer::SessionManager *session = ProjectExplorer::ProjectExplorerPlugin::instance()->session();
+    if (!session->projectForFile(path)) {
+        foreach (ProjectExplorer::Project *p, session->projects()) {
+            if (path.startsWith(p->projectDirectory())) {
+                p->rootProjectNode()->addFiles(ProjectExplorer::UnknownFileType, QStringList() << path);
+                break;
+            }
+        }
+    }
+
+    m_settings->subConfig<AbstractMemcheckSettings>()->addSuppressionFiles(QStringList(path));
+
+    QModelIndexList indizes = m_view->selectionModel()->selectedRows();
+    qSort(indizes.begin(), indizes.end(), sortIndizesReverse);
+    foreach (const QModelIndex &index, indizes) {
+        bool removed = m_view->model()->removeRow(index.row());
+        QTC_ASSERT(removed, qt_noop());
+        Q_UNUSED(removed);
+    }
+
+    // one suppression might hide multiple rows, care for that
+    for (int row = 0; row < m_view->model()->rowCount(); ++row ) {
+        const Error rowError = m_view->model()->data(
+            m_view->model()->index(row, 0), ErrorListModel::ErrorRole).value<Error>();
+
+        foreach (const Error &error, m_errors) {
+            if (equalSuppression(rowError, error)) {
+                bool removed = m_view->model()->removeRow(row);
+                QTC_ASSERT(removed, qt_noop());
+                Q_UNUSED(removed);
+                // gets increased in the for loop again
+                --row;
+                break;
+            }
+        }
+    }
+
+    // select a new item
+    m_view->setCurrentIndex(indizes.first());
+
+    QDialog::accept();
+}
+
+void SuppressionDialog::reject()
+{
+    if (m_cleanupIfCanceled)
+        QFile::remove(m_view->defaultSuppressionFile());
+
+    QDialog::reject();
+}
+
+void SuppressionDialog::validate()
+{
+    bool valid = m_ui->fileChooser->isValid()
+            && !m_ui->suppressionEdit->toPlainText().trimmed().isEmpty();
+
+    m_ui->buttonBox->button(QDialogButtonBox::Save)->setEnabled(valid);
+}
+
+} // namespace Internal
+} // namespace Valgrind