Debugger: Add special widgets for editing watch values.

Create delegate widgets with validation for bool/int/float
types, using a QVariant-type modelData property.
Also fix register editing to be validated for quint64 values
and editing longer values as hex bigints. Anything else is not
editable.

src/plugins/debugger/debugger.pro

@@ -52,7 +52,8 @@ HEADERS += breakhandler.h \
     watchhandler.h \
     watchutils.h \
     watchwindow.h \
-    threadshandler.h
+    threadshandler.h \
+    watchdelegatewidgets.h
 
 SOURCES += breakhandler.cpp \
     breakpoint.cpp \
@@ -88,7 +89,8 @@ SOURCES += breakhandler.cpp \
     watchhandler.cpp \
     watchutils.cpp \
     watchwindow.cpp \
-    stackframe.cpp
+    stackframe.cpp \
+    watchdelegatewidgets.cpp
 
 FORMS += attachexternaldialog.ui \
     attachcoredialog.ui \

src/plugins/debugger/debuggerconstants.h

@@ -223,6 +223,8 @@ enum ModelRoles
 
     // Locals and Watchers
     LocalsINameRole,
+    LocalsEditTypeRole,     // A QVariant::type describing the item
+    LocalsIntegerBaseRole,  // Number base 16, 10, 8, 2
     LocalsExpressionRole,
     LocalsExpandedRole,     // The preferred expanded state to the view
     LocalsTypeFormatListRole,
@@ -265,6 +267,7 @@ enum ModelRoles
     RegisterNumberBaseRole,  // Currently used number base
     RegisterAddressRole,     // Start value for opening memory view
     RegisterChangedRole,     // Used for painting changed values
+    RegisterBigNumberRole,   // Register is a big integer that cannot be handled as quint64.
     RequestSetRegisterRole,
     RequestReloadRegistersRole,
 

src/plugins/debugger/registerhandler.cpp

@@ -33,6 +33,7 @@
 #include "debuggeragents.h"
 #include "debuggerconstants.h"
 #include "debuggerengine.h"
+#include "watchdelegatewidgets.h"
 
 #include <utils/qtcassert.h>
 
@@ -68,17 +69,27 @@ int RegisterHandler::columnCount(const QModelIndex &parent) const
     return parent.isValid() ? 0 : 2;
 }
 
-inline QString RegisterHandler::value(const Register &reg, bool padded) const
+// Editor value: Preferably number, else string.
+QVariant RegisterHandler::editValue(const Register &reg)
 {
     bool ok = true;
     // Try to convert to number?
     const qulonglong value = reg.value.toULongLong(&ok, 0); // Autodetect format
     if (ok)
-        return QString::fromAscii("%1").arg(value, (padded ? m_strlen : 0), m_base);
-    // Cannot convert, return raw string.
-    if (padded && reg.value.size() < m_strlen)
-        return QString(m_strlen - reg.value.size(), QLatin1Char(' ')) + reg.value;
-    return reg.value;
+        return QVariant(value);
+    return QVariant(reg.value);
+}
+
+// Editor value: Preferably padded number, else padded string.
+inline QString RegisterHandler::displayValue(const Register &reg) const
+{
+    const QVariant editV = RegisterHandler::editValue(reg);
+    if (editV.type() == QVariant::ULongLong)
+        return QString::fromAscii("%1").arg(editV.toULongLong(), m_strlen, m_base);
+    const QString stringValue = editV.toString();
+    if (stringValue.size() < m_strlen)
+        return QString(m_strlen - stringValue.size(), QLatin1Char(' ')) + reg.value;
+    return stringValue;
 }
 
 QVariant RegisterHandler::data(const QModelIndex &index, int role) const
@@ -92,9 +103,6 @@ QVariant RegisterHandler::data(const QModelIndex &index, int role) const
 
         case EngineActionsEnabledRole:
             return m_engine->debuggerActionsEnabled();
-
-        case RegisterNumberBaseRole:
-            return m_base;
     }
 
     if (!index.isValid() || index.row() >= m_registers.size())
@@ -105,11 +113,9 @@ QVariant RegisterHandler::data(const QModelIndex &index, int role) const
     switch (role) {
     case RegisterAddressRole: {
         // Return some address associated with the register. Autodetect format
-        bool ok = true;
-        qulonglong value = reg.value.toULongLong(&ok, 0);
-        return ok ? QVariant(QString::fromLatin1("0x") + QString::number(value, 16)) : QVariant();
+        const QVariant editV = RegisterHandler::editValue(reg);
+        return editV.type() == QVariant::ULongLong ? editV : QVariant();
     }
-        break;
 
     case Qt::DisplayRole:
         switch (index.column()) {
@@ -118,14 +124,18 @@ QVariant RegisterHandler::data(const QModelIndex &index, int role) const
             return QVariant(padding + reg.name + padding);
         }
         case 1: // Display: Pad value for alignment
-            return value(reg, true);
+            return displayValue(reg);
         } // switch column
     case Qt::EditRole: // Edit: Unpadded for editing
-        return value(reg, false);
+        return RegisterHandler::editValue(reg);
     case Qt::TextAlignmentRole:
         return index.column() == 1 ? QVariant(Qt::AlignRight) : QVariant();
     case RegisterChangedRole:
         return QVariant(reg.changed);
+    case RegisterBigNumberRole: // Editor: Can it be handled as quint64?
+        return editValue(reg).type() != QVariant::ULongLong;
+    case RegisterNumberBaseRole: // Big integers are assumed to be hexadecimal
+        return editValue(reg).type() == QVariant::ULongLong ? m_base : 16;
     default:
         break;
     }
@@ -146,22 +156,14 @@ QVariant RegisterHandler::headerData(int section, Qt::Orientation orientation,
 
 Qt::ItemFlags RegisterHandler::flags(const QModelIndex &idx) const
 {
-    using namespace Qt;
-
     if (!idx.isValid())
-        return ItemFlags();
-
-    static const ItemFlags notEditable =
-          ItemIsSelectable
-        // | ItemIsDragEnabled
-        // | ItemIsDropEnabled
-        | ItemIsEnabled;
-
-    static const ItemFlags editable = notEditable | ItemIsEditable;
+        return Qt::ItemFlags();
 
-    if (idx.column() == 1)
-        return editable; // locals and watcher values are editable
-    return  notEditable;
+    const Qt::ItemFlags notEditable = Qt::ItemIsSelectable|Qt::ItemIsEnabled;
+    // Can edit registers if they are hex numbers and not arrays.
+    if (idx.column() == 1 && IntegerWatchLineEdit::isUnsignedHexNumber(m_registers.at(idx.row()).value))
+        return notEditable | Qt::ItemIsEditable;
+    return notEditable;
 }
 
 bool RegisterHandler::setData(const QModelIndex &index, const QVariant &value, int role)

src/plugins/debugger/registerhandler.h

@@ -73,7 +73,8 @@ public:
 
 private:
     void calculateWidth();
-    inline QString value(const Register &reg, bool padded) const;
+    inline QString displayValue(const Register &reg) const;
+    static QVariant editValue(const Register &reg);
     int rowCount(const QModelIndex &parent = QModelIndex()) const;
     int columnCount(const QModelIndex &parent = QModelIndex()) const;
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;

src/plugins/debugger/registerwindow.cpp

@@ -32,6 +32,8 @@
 #include "debuggeractions.h"
 #include "debuggerconstants.h"
 
+#include "watchdelegatewidgets.h"
+
 #include <utils/qtcassert.h>
 #include <utils/savedaction.h>
 
@@ -66,31 +68,31 @@ public:
     {}
 
     QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &,
-        const QModelIndex &) const
+        const QModelIndex &index) const
     {
-        QLineEdit *lineEdit = new QLineEdit(parent);
+        IntegerWatchLineEdit *lineEdit = new IntegerWatchLineEdit(parent);
+        lineEdit->setBase(index.data(RegisterNumberBaseRole).toInt());
+        lineEdit->setBigInt(index.data(RegisterBigNumberRole).toBool());
+        lineEdit->setSigned(false);
+
         lineEdit->setAlignment(Qt::AlignRight);
         return lineEdit;
     }
 
     void setEditorData(QWidget *editor, const QModelIndex &index) const
     {
-        QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor);
+        IntegerWatchLineEdit *lineEdit = qobject_cast<IntegerWatchLineEdit *>(editor);
         QTC_ASSERT(lineEdit, return);
-        lineEdit->setText(index.data(Qt::EditRole).toString());
+        lineEdit->setModelData(index.data(Qt::EditRole));
     }
 
-    void setModelData(QWidget *editor, QAbstractItemModel *model,
-        const QModelIndex &index) const
+    void setModelData(QWidget *editor, QAbstractItemModel *, const QModelIndex &index) const
     {
-        Q_UNUSED(model);
-        //qDebug() << "SET MODEL DATA";
-        QLineEdit *lineEdit = qobject_cast<QLineEdit*>(editor);
+        if (index.column() != 1)
+            return;
+        IntegerWatchLineEdit *lineEdit = qobject_cast<IntegerWatchLineEdit*>(editor);
         QTC_ASSERT(lineEdit, return);
-        QString value = lineEdit->text();
-        //model->setData(index, value, Qt::EditRole);
-        if (index.column() == 1)
-            m_owner->model()->setData(index, value, RequestSetRegisterRole);
+        m_owner->model()->setData(index, lineEdit->modelData(), RequestSetRegisterRole);
     }
 
     void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option,

src/plugins/debugger/watchdelegatewidgets.cpp

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** 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 "watchdelegatewidgets.h"
+
+#include <QtGui/QDoubleValidator>
+#include <QtCore/QDebug>
+
+#include <utils/qtcassert.h>
+
+enum { debug = 0 };
+
+namespace Debugger {
+namespace Internal {
+
+// Basic watch line edit.
+WatchLineEdit::WatchLineEdit(QWidget *parent) : QLineEdit(parent)
+{
+}
+
+QVariant WatchLineEdit::modelData() const
+{
+    return QVariant(text());
+}
+
+void WatchLineEdit::setModelData(const QVariant &v)
+{
+    if (debug)
+        qDebug("WatchLineEdit::setModelData(%s, '%s')", v.typeName(), qPrintable(v.toString()));
+    setText(v.toString());
+}
+
+ /* ------ IntegerWatchLineEdit helpers:
+  *        Integer validator using different number bases. */
+class IntegerValidator : public QValidator {
+public:
+    explicit IntegerValidator(QObject *parent);
+    virtual State validate(QString &, int &) const;
+
+    int base() const           { return m_base; }
+    void setBase(int b)        { m_base = b; }
+    bool isSigned() const      { return m_signed; }
+    void setSigned(bool s)     { m_signed = s; }
+    bool isBigInt() const      { return m_bigInt; }
+    void setBigInt(bool b)     { m_bigInt = b; }
+
+    static State validateEntry(const QString &s, int base, bool signedV, bool bigInt);
+
+private:
+    static inline bool isCharAcceptable(const QChar &c, int base);
+
+    int m_base;
+    bool m_signed;
+    bool m_bigInt;
+};
+
+IntegerValidator::IntegerValidator(QObject *parent) :
+    QValidator(parent), m_base(10), m_signed(true), m_bigInt(false)
+{
+}
+
+// Check valid digits depending on base.
+bool IntegerValidator::isCharAcceptable(const QChar &c, int base)
+{
+    if (c.isLetter())
+        return base == 16 && c.toLower().toAscii() <= 'f';
+    if (!c.isDigit())
+        return false;
+    const int digit = c.toAscii() - '0';
+    if (base == 8 && digit > 7)
+        return false;
+    if (base == 2 && digit > 1)
+        return false;
+    return true;
+}
+
+QValidator::State IntegerValidator::validate(QString &s, int &) const
+{
+    return IntegerValidator::validateEntry(s, m_base, m_signed, m_bigInt);
+}
+
+QValidator::State IntegerValidator::validateEntry(const QString &s, int base, bool signedV, bool bigInt)
+{
+    const int size = s.size();
+    if (!size)
+        return QValidator::Intermediate;
+    int pos = 0;
+    // Skip sign.
+    if (signedV && s.at(pos) == '-') {
+        pos++;
+        if (pos == size)
+            return QValidator::Intermediate;
+    }
+    // Hexadecimal: '0x'?
+    if (base == 16 && pos + 2 <= size
+        && s.at(pos) == QLatin1Char('0') && s.at(pos + 1) == QLatin1Char('x')) {
+        pos+= 2;
+        if (pos == size)
+            return QValidator::Intermediate;
+    }
+
+    // Check characters past sign.
+    for (; pos < size; pos++)
+        if (!isCharAcceptable(s.at(pos), base))
+            return QValidator::Invalid;
+    // Check conversion unless big integer
+    if (bigInt)
+        return QValidator::Acceptable;
+    bool ok;
+    if (signedV) {
+        s.toLongLong(&ok, base);
+    } else {
+        s.toULongLong(&ok, base);
+    }
+    return ok ? QValidator::Acceptable : QValidator::Intermediate;
+}
+
+IntegerWatchLineEdit::IntegerWatchLineEdit(QWidget *parent) :
+    WatchLineEdit(parent),
+    m_validator(new IntegerValidator(this))
+{
+    setValidator(m_validator);
+}
+
+bool IntegerWatchLineEdit::isUnsignedHexNumber(const QString &v)
+{
+    return IntegerValidator::validateEntry(v, 16, false, true) == QValidator::Acceptable;
+}
+
+int IntegerWatchLineEdit::base() const
+{
+    return m_validator->base();
+}
+
+void IntegerWatchLineEdit::setBase(int b)
+{
+    QTC_ASSERT(b, return; )
+    m_validator->setBase(b);
+}
+
+bool IntegerWatchLineEdit::isSigned() const
+{
+    return m_validator->isSigned();
+}
+
+void IntegerWatchLineEdit::setSigned(bool s)
+{
+    m_validator->setSigned(s);
+}
+
+bool IntegerWatchLineEdit::isBigInt() const
+{
+    return m_validator->isBigInt();
+}
+
+void IntegerWatchLineEdit::setBigInt(bool b)
+{
+    m_validator->setBigInt(b);
+}
+
+QVariant IntegerWatchLineEdit::modelDataI() const
+{
+    if (isBigInt()) // Big integer: Plain text
+        return QVariant(text());
+    bool ok;
+    if (isSigned()) {
+        const qint64 value = text().toLongLong(&ok, base());
+        if (ok)
+            return QVariant(value);
+    } else {
+        const quint64 value = text().toULongLong(&ok, base());
+        if (ok)
+            return QVariant(value);
+    }
+    return QVariant();
+}
+
+QVariant IntegerWatchLineEdit::modelData() const
+{
+    const QVariant data = modelDataI();
+    if (debug)
+        qDebug("IntegerLineEdit::modelData(): base=%d, signed=%d, bigint=%d returns %s '%s'",
+               base(), isSigned(), isBigInt(), data.typeName(), qPrintable(data.toString()));
+    return data;
+}
+
+void IntegerWatchLineEdit::setModelData(const QVariant &v)
+{
+    if (debug)
+        qDebug(">IntegerLineEdit::setModelData(%s, '%s'): base=%d, signed=%d, bigint=%d",
+               v.typeName(), qPrintable(v.toString()),
+               base(), isSigned(), isBigInt());
+    switch (v.type()) {
+    case QVariant::Int:
+    case QVariant::LongLong: {
+        const qint64 iv = v.toLongLong();
+        setSigned(true);
+        setText(QString::number(iv, base()));
+    }
+        break;
+    case QVariant::UInt:
+    case QVariant::ULongLong: {
+         const quint64 iv = v.toULongLong();
+         setSigned(false);
+         setText(QString::number(iv, base()));
+        }
+        break;
+    case QVariant::ByteArray:
+        setNumberText(QString::fromAscii(v.toByteArray()));
+        break;
+    case QVariant::String:
+        setNumberText(v.toString());
+        break;
+    default:
+        qWarning("Invalid value (%s) passed to IntegerLineEdit::setModelData",
+                 v.typeName());
+        setText(QString(QLatin1Char('0')));
+        break;
+    }
+    if (debug)
+        qDebug("<IntegerLineEdit::setModelData(): base=%d, signed=%d, bigint=%d",
+               base(), isSigned(), isBigInt());
+}
+
+void IntegerWatchLineEdit::setNumberText(const QString &t)
+{
+    setText(t);
+}
+
+// ------------- FloatWatchLineEdit
+FloatWatchLineEdit::FloatWatchLineEdit(QWidget *parent) :
+    WatchLineEdit(parent)
+{
+    setValidator(new QDoubleValidator(this));
+}
+
+QVariant FloatWatchLineEdit::modelData() const
+{
+    return QVariant(text().toDouble());
+}
+
+void FloatWatchLineEdit::setModelData(const QVariant &v)
+{
+    if (debug)
+        qDebug("FloatWatchLineEdit::setModelData(%s, '%s')",
+               v.typeName(), qPrintable(v.toString()));
+    switch (v.type()) {
+        break;
+    case QVariant::Double:
+    case QVariant::String:
+        setText(v.toString());
+        break;
+    case QVariant::ByteArray:
+        setText(QString::fromAscii(v.toByteArray()));
+        break;
+    default:
+        qWarning("Invalid value (%s) passed to FloatWatchLineEdit::setModelData",
+                 v.typeName());
+        setText(QString::number(0.0));
+        break;
+    }
+}
+
+WatchLineEdit *WatchLineEdit::create(QVariant::Type t, QWidget *parent)
+{
+    switch (t) {
+    case QVariant::Bool:
+    case QVariant::Int:
+    case QVariant::UInt:
+    case QVariant::LongLong:
+    case QVariant::ULongLong:
+        return new IntegerWatchLineEdit(parent);
+        break;
+    case QVariant::Double:
+        return new FloatWatchLineEdit(parent);
+    default:
+        break;
+    }
+    return new WatchLineEdit(parent);
+}
+
+BooleanComboBox::BooleanComboBox(QWidget *parent) : QComboBox(parent)
+{
+    QStringList items;
+    items << QLatin1String("false") << QLatin1String("true");
+    addItems(items);
+}
+
+QVariant BooleanComboBox::modelData() const
+{
+    // As not to confuse debuggers with 'true', 'false', we return integers 1,0.
+    const int rc = currentIndex() == 1 ? 1 : 0;
+    return QVariant(rc);
+}
+
+void BooleanComboBox::setModelData(const QVariant &v)
+{
+    if (debug)
+        qDebug("BooleanComboBox::setModelData(%s, '%s')", v.typeName(), qPrintable(v.toString()));
+
+    bool value = false;
+    switch (v.type()) {
+    case QVariant::Bool:
+        value = v.toBool();
+        break;
+    case QVariant::Int:
+    case QVariant::UInt:
+    case QVariant::LongLong:
+    case QVariant::ULongLong:
+        value = v.toInt() != 0;
+        break;
+    default:
+        qWarning("Invalid value (%s) passed to BooleanComboBox::setModelData", v.typeName());
+        break;
+    }
+    setCurrentIndex(value ? 1 : 0);
+}
+
+} // namespace Internal
+} // namespace Debugger

src/plugins/debugger/watchdelegatewidgets.h

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** 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.
+**
+**************************************************************************/
+
+#ifndef WATCHDELEGATEEDITS_H
+#define WATCHDELEGATEEDITS_H
+
+#include <QtGui/QLineEdit>
+#include <QtGui/QComboBox>
+#include <QtCore/QVariant>
+