Add callgrind support to valgrind library.

Merge-request: 284
Reviewed-by: hjk <qtc-committer@nokia.com>

src/libs/valgrind/callgrind/callgrindstackbrowser.cpp

@@ -0,0 +1,101 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator Analyzer Tools
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** GNU Lesser General Public License Usage
+**
+** Alternatively, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "callgrindstackbrowser.h"
+
+using namespace Valgrind::Callgrind;
+
+HistoryItem::HistoryItem(StackBrowser *stack)
+{
+    if (stack)
+        stack->select(this);
+}
+
+HistoryItem::~HistoryItem()
+{
+
+}
+
+
+FunctionHistoryItem::FunctionHistoryItem(const Function *function, StackBrowser *stack)
+    : HistoryItem(stack)
+    , m_function(function)
+{
+}
+
+FunctionHistoryItem::~FunctionHistoryItem()
+{
+}
+
+StackBrowser::StackBrowser(QObject *parent)
+    : QObject(parent)
+{
+}
+
+StackBrowser::~StackBrowser()
+{
+    qDeleteAll(m_stack);
+    m_stack.clear();
+}
+
+void StackBrowser::clear()
+{
+    qDeleteAll(m_stack);
+    m_stack.clear();
+    emit currentChanged();
+}
+
+int StackBrowser::size() const
+{
+    return m_stack.size();
+}
+
+void StackBrowser::select(HistoryItem *item)
+{
+    if (!m_stack.isEmpty() && m_stack.top() == item)
+        return;
+
+    m_stack.push(item);
+    emit currentChanged();
+}
+
+HistoryItem *StackBrowser::current() const
+{
+    return m_stack.isEmpty() ? 0 : m_stack.top();
+}
+
+void StackBrowser::goBack()
+{
+    if (m_stack.isEmpty())
+        return;
+
+    HistoryItem *item = m_stack.pop();
+    delete item;
+    emit currentChanged();
+}