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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "stackhandler.h"
#include "debuggeractions.h"
#include "debuggercore.h"
#include <utils/qtcassert.h>
#include <utils/savedaction.h>
#include <QDebug>
#include <QFileInfo>
namespace Debugger {
namespace Internal {
////////////////////////////////////////////////////////////////////////
//
// StackHandler
//
////////////////////////////////////////////////////////////////////////
/*!
\class Debugger::Internal::StackHandler
\brief The StackHandler class provides a model to represent the stack in a
QTreeView.
*/
StackHandler::StackHandler()
: m_positionIcon(QIcon(QLatin1String(":/debugger/images/location_16.png"))),
m_emptyIcon(QIcon(QLatin1String(":/debugger/images/debugger_empty_14.png")))
{
setObjectName(QLatin1String("StackModel"));
m_resetLocationScheduled = false;
m_contentsValid = false;
m_currentIndex = -1;
m_canExpand = false;
connect(debuggerCore()->action(OperateByInstruction), SIGNAL(triggered()),
this, SLOT(resetModel()));
}
StackHandler::~StackHandler()
{
}
int StackHandler::rowCount(const QModelIndex &parent) const
{
// Since the stack is not a tree, row count is 0 for any valid parent
return parent.isValid() ? 0 : (m_stackFrames.size() + m_canExpand);
}
int StackHandler::columnCount(const QModelIndex &parent) const
{
return parent.isValid() ? 0 : 5;
}
QVariant StackHandler::data(const QModelIndex &index, int role) const
{
if (!index.isValid() || index.row() >= m_stackFrames.size() + m_canExpand)
return QVariant();
if (index.row() == m_stackFrames.size()) {
if (role == Qt::DisplayRole && index.column() == 0)
return tr("...");
if (role == Qt::DisplayRole && index.column() == 1)
return tr("<More>");
if (role == Qt::DecorationRole && index.column() == 0)
return m_emptyIcon;
return QVariant();
}
const StackFrame &frame = m_stackFrames.at(index.row());
if (role == Qt::DisplayRole) {
switch (index.column()) {
case 0: // Stack frame level
return QString::number(frame.level);
case 1: // Function name
return frame.function;
case 2: // File name
return frame.file.isEmpty() ? frame.from : QFileInfo(frame.file).fileName();
case 3: // Line number
return frame.line > 0 ? QVariant(frame.line) : QVariant();
case 4: // Address
if (frame.address)
return QString::fromLatin1("0x%1").arg(frame.address, 0, 16);
return QString();
}
return QVariant();
}
if (role == Qt::DecorationRole && index.column() == 0) {
// Return icon that indicates whether this is the active stack frame
return (m_contentsValid && index.row() == m_currentIndex)
? m_positionIcon : m_emptyIcon;
}
if (role == Qt::ToolTipRole && debuggerCore()->boolSetting(UseToolTipsInStackView))
return frame.toToolTip();
return QVariant();
}
QVariant StackHandler::headerData(int section, Qt::Orientation orient, int role) const
{
if (orient == Qt::Horizontal && role == Qt::DisplayRole) {
switch (section) {
case 0: return tr("Level");
case 1: return tr("Function");
case 2: return tr("File");
case 3: return tr("Line");
case 4: return tr("Address");
};
}
return QVariant();
}
Qt::ItemFlags StackHandler::flags(const QModelIndex &index) const
{
if (index.row() >= m_stackFrames.size() + m_canExpand)
return 0;
if (index.row() == m_stackFrames.size())
return QAbstractTableModel::flags(index);
const StackFrame &frame = m_stackFrames.at(index.row());
const bool isValid = frame.isUsable()
|| debuggerCore()->boolSetting(OperateByInstruction);
return isValid && m_contentsValid
? QAbstractTableModel::flags(index) : Qt::ItemFlags();
}
StackFrame StackHandler::currentFrame() const
{
if (m_currentIndex == -1)
return StackFrame();
QTC_ASSERT(m_currentIndex >= 0, return StackFrame());
QTC_ASSERT(m_currentIndex < m_stackFrames.size(), return StackFrame());
return m_stackFrames.at(m_currentIndex);
}
void StackHandler::setCurrentIndex(int level)
{
if (level == -1 || level == m_currentIndex)
return;
// Emit changed for previous frame
QModelIndex i = index(m_currentIndex, 0);
emit dataChanged(i, i);
m_currentIndex = level;
emit currentIndexChanged();
// Emit changed for new frame
i = index(m_currentIndex, 0);
emit dataChanged(i, i);
}
void StackHandler::removeAll()
{
beginResetModel();
m_stackFrames.clear();
setCurrentIndex(-1);
endResetModel();
}
void StackHandler::setFrames(const StackFrames &frames, bool canExpand)
{
beginResetModel();
m_resetLocationScheduled = false;
m_contentsValid = true;
m_canExpand = canExpand;
m_stackFrames = frames;
if (m_stackFrames.size() >= 0)
setCurrentIndex(0);
else
m_currentIndex = -1;
endResetModel();
emit stackChanged();
}
const StackFrames &StackHandler::frames() const
{
return m_stackFrames;
}
void StackHandler::scheduleResetLocation()
{
m_resetLocationScheduled = true;
m_contentsValid = false;
}
void StackHandler::resetLocation()
{
if (m_resetLocationScheduled) {
beginResetModel();
m_resetLocationScheduled = false;
endResetModel();
}
}
} // namespace Internal
} // namespace Debugger
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