Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 897 insertions, 0 deletions

diff --git a/src/gui/kernel/qshortcutmap.cpp b/src/gui/kernel/qshortcutmap.cpp
new file mode 100644
index 0000000000..5e65e676d9
--- /dev/null
+++ b/src/gui/kernel/qshortcutmap.cpp
@@ -0,0 +1,897 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qshortcutmap_p.h"
+#include "private/qobject_p.h"
+#include "qkeysequence.h"
+#include "qgraphicsscene.h"
+#include "qgraphicsview.h"
+#include "qdebug.h"
+#include "qevent.h"
+#include "qwidget.h"
+#include "qapplication.h"
+#include "qvector.h"
+#include "qmenu.h"
+#include "qmenubar.h"
+#include "qshortcut.h"
+#include "qapplication_p.h"
+#include <private/qaction_p.h>
+#include <private/qkeymapper_p.h>
+#include <private/qwidget_p.h>
+
+#ifndef QT_NO_SHORTCUT
+
+QT_BEGIN_NAMESPACE
+
+// To enable verbose output uncomment below
+//#define DEBUG_QSHORTCUTMAP
+
+/* \internal
+    Entry data for QShortcutMap
+    Contains:
+        Keysequence for entry
+        Pointer to parent owning the sequence
+*/
+struct QShortcutEntry
+{
+    QShortcutEntry()
+        : keyseq(0), context(Qt::WindowShortcut), enabled(false), autorepeat(1), id(0), owner(0)
+    {}
+
+    QShortcutEntry(const QKeySequence &k)
+        : keyseq(k), context(Qt::WindowShortcut), enabled(false), autorepeat(1), id(0), owner(0)
+    {}
+
+    QShortcutEntry(QObject *o, const QKeySequence &k, Qt::ShortcutContext c, int i)
+        : keyseq(k), context(c), enabled(true), autorepeat(1), id(i), owner(o)
+    {}
+
+    QShortcutEntry(QObject *o, const QKeySequence &k, Qt::ShortcutContext c, int i, bool a)
+        : keyseq(k), context(c), enabled(true), autorepeat(a), id(i), owner(o)
+    {}
+
+    bool operator<(const QShortcutEntry &f) const
+    { return keyseq < f.keyseq; }
+
+    QKeySequence keyseq;
+    Qt::ShortcutContext context;
+    bool enabled : 1;
+    bool autorepeat : 1;
+    signed int id;
+    QObject *owner;
+};
+
+#if 0 //ndef QT_NO_DEBUG_STREAM
+/*! \internal
+    QDebug operator<< for easy debug output of the shortcut entries.
+*/
+static QDebug &operator<<(QDebug &dbg, const QShortcutEntry *se) {
+    if (!se)
+        return dbg << "QShortcutEntry(0x0)";
+    dbg.nospace()
+        << "QShortcutEntry(" << se->keyseq
+        << "), id(" << se->id << "), enabled(" << se->enabled << "), autorepeat(" << se->autorepeat
+        << "), owner(" << se->owner << ')';
+    return dbg.space();
+}
+#endif // QT_NO_DEBUGSTREAM
+
+/* \internal
+    Private data for QShortcutMap
+*/
+class QShortcutMapPrivate
+{
+    Q_DECLARE_PUBLIC(QShortcutMap)
+
+public:
+    QShortcutMapPrivate(QShortcutMap* parent)
+        : q_ptr(parent), currentId(0), ambigCount(0), currentState(QKeySequence::NoMatch)
+    {
+        identicals.reserve(10);
+        currentSequences.reserve(10);
+    }
+    QShortcutMap *q_ptr;                        // Private's parent
+
+    QList<QShortcutEntry> sequences;            // All sequences!
+
+    int currentId;                              // Global shortcut ID number
+    int ambigCount;                             // Index of last enabled ambiguous dispatch
+    QKeySequence::SequenceMatch currentState;
+    QVector<QKeySequence> currentSequences;     // Sequence for the current state
+    QVector<QKeySequence> newEntries;
+    QKeySequence prevSequence;                  // Sequence for the previous identical match
+    QVector<const QShortcutEntry*> identicals;  // Last identical matches
+};
+
+
+/*! \internal
+    QShortcutMap constructor.
+*/
+QShortcutMap::QShortcutMap()
+    : d_ptr(new QShortcutMapPrivate(this))
+{
+    resetState();
+}
+
+/*! \internal
+    QShortcutMap destructor.
+*/
+QShortcutMap::~QShortcutMap()
+{
+}
+
+/*! \internal
+    Adds a shortcut to the global map.
+    Returns the id of the newly added shortcut.
+*/
+int QShortcutMap::addShortcut(QObject *owner, const QKeySequence &key, Qt::ShortcutContext context)
+{
+    Q_ASSERT_X(owner, "QShortcutMap::addShortcut", "All shortcuts need an owner");
+    Q_ASSERT_X(!key.isEmpty(), "QShortcutMap::addShortcut", "Cannot add keyless shortcuts to map");
+    Q_D(QShortcutMap);
+
+    QShortcutEntry newEntry(owner, key, context, --(d->currentId), true);
+    QList<QShortcutEntry>::iterator it = qUpperBound(d->sequences.begin(), d->sequences.end(), newEntry);
+    d->sequences.insert(it, newEntry); // Insert sorted
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug().nospace()
+        << "QShortcutMap::addShortcut(" << owner << ", "
+        << key << ", " << context << ") = " << d->currentId;
+#endif
+    return d->currentId;
+}
+
+/*! \internal
+    Removes a shortcut from the global map.
+    If \a owner is 0, all entries in the map with the key sequence specified
+    is removed. If \a key is null, all sequences for \a owner is removed from
+    the map. If \a id is 0, any identical \a key sequences owned by \a owner
+    are removed.
+    Returns the number of sequences removed from the map.
+*/
+
+int QShortcutMap::removeShortcut(int id, QObject *owner, const QKeySequence &key)
+{
+    Q_D(QShortcutMap);
+    int itemsRemoved = 0;
+    bool allOwners = (owner == 0);
+    bool allKeys = key.isEmpty();
+    bool allIds = id == 0;
+
+    // Special case, remove everything
+    if (allOwners && allKeys && id == 0) {
+        itemsRemoved = d->sequences.size();
+        d->sequences.clear();
+        return itemsRemoved;
+    }
+
+    int i = d->sequences.size()-1;
+    while (i>=0)
+    {
+        const QShortcutEntry &entry = d->sequences.at(i);
+        int entryId = entry.id;
+        if ((allOwners || entry.owner == owner)
+            && (allIds || entry.id == id)
+            && (allKeys || entry.keyseq == key)) {
+            d->sequences.removeAt(i);
+            ++itemsRemoved;
+        }
+        if (id == entryId)
+            return itemsRemoved;
+        --i;
+    }
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug().nospace()
+        << "QShortcutMap::removeShortcut(" << id << ", " << owner << ", "
+        << key << ") = " << itemsRemoved;
+#endif
+    return itemsRemoved;
+}
+
+/*! \internal
+    Changes the enable state of a shortcut to \a enable.
+    If \a owner is 0, all entries in the map with the key sequence specified
+    is removed. If \a key is null, all sequences for \a owner is removed from
+    the map. If \a id is 0, any identical \a key sequences owned by \a owner
+    are changed.
+    Returns the number of sequences which are matched in the map.
+*/
+int QShortcutMap::setShortcutEnabled(bool enable, int id, QObject *owner, const QKeySequence &key)
+{
+    Q_D(QShortcutMap);
+    int itemsChanged = 0;
+    bool allOwners = (owner == 0);
+    bool allKeys = key.isEmpty();
+    bool allIds = id == 0;
+
+    int i = d->sequences.size()-1;
+    while (i>=0)
+    {
+        QShortcutEntry entry = d->sequences.at(i);
+        if ((allOwners || entry.owner == owner)
+            && (allIds || entry.id == id)
+            && (allKeys || entry.keyseq == key)) {
+            d->sequences[i].enabled = enable;
+            ++itemsChanged;
+        }
+        if (id == entry.id)
+            return itemsChanged;
+        --i;
+    }
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug().nospace()
+        << "QShortcutMap::setShortcutEnabled(" << enable << ", " << id << ", "
+        << owner << ", " << key << ") = " << itemsChanged;
+#endif
+    return itemsChanged;
+}
+
+/*! \internal
+    Changes the auto repeat state of a shortcut to \a enable.
+    If \a owner is 0, all entries in the map with the key sequence specified
+    is removed. If \a key is null, all sequences for \a owner is removed from
+    the map. If \a id is 0, any identical \a key sequences owned by \a owner
+    are changed.
+    Returns the number of sequences which are matched in the map.
+*/
+int QShortcutMap::setShortcutAutoRepeat(bool on, int id, QObject *owner, const QKeySequence &key)
+{
+    Q_D(QShortcutMap);
+    int itemsChanged = 0;
+    bool allOwners = (owner == 0);
+    bool allKeys = key.isEmpty();
+    bool allIds = id == 0;
+
+    int i = d->sequences.size()-1;
+    while (i>=0)
+    {
+        QShortcutEntry entry = d->sequences.at(i);
+        if ((allOwners || entry.owner == owner)
+            && (allIds || entry.id == id)
+            && (allKeys || entry.keyseq == key)) {
+                d->sequences[i].autorepeat = on;
+                ++itemsChanged;
+        }
+        if (id == entry.id)
+            return itemsChanged;
+        --i;
+    }
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug().nospace()
+        << "QShortcutMap::setShortcutAutoRepeat(" << on << ", " << id << ", "
+        << owner << ", " << key << ") = " << itemsChanged;
+#endif
+    return itemsChanged;
+}
+
+/*! \internal
+    Resets the state of the statemachine to NoMatch
+*/
+void QShortcutMap::resetState()
+{
+    Q_D(QShortcutMap);
+    d->currentState = QKeySequence::NoMatch;
+    clearSequence(d->currentSequences);
+}
+
+/*! \internal
+    Returns the current state of the statemachine
+*/
+QKeySequence::SequenceMatch QShortcutMap::state()
+{
+    Q_D(QShortcutMap);
+    return d->currentState;
+}
+
+/*! \internal
+    Uses ShortcutOverride event to see if any widgets want to override
+    the event. If not, uses nextState(QKeyEvent) to check for a grabbed
+    Shortcut, and dispatchEvent() is found an identical.
+    \sa nextState dispatchEvent
+*/
+bool QShortcutMap::tryShortcutEvent(QObject *o, QKeyEvent *e)
+{
+    Q_D(QShortcutMap);
+
+    bool wasAccepted = e->isAccepted();
+    bool wasSpontaneous = e->spont;
+    if (d->currentState == QKeySequence::NoMatch) {
+        ushort orgType = e->t;
+        e->t = QEvent::ShortcutOverride;
+        e->ignore();
+        QApplication::sendEvent(o, e);
+        e->t = orgType;
+        e->spont = wasSpontaneous;
+        if (e->isAccepted()) {
+            if (!wasAccepted)
+                e->ignore();
+            return false;
+        }
+    }
+
+    QKeySequence::SequenceMatch result = nextState(e);
+    bool stateWasAccepted = e->isAccepted();
+    if (wasAccepted)
+        e->accept();
+    else
+        e->ignore();
+
+    int identicalMatches = d->identicals.count();
+
+    switch(result) {
+    case QKeySequence::NoMatch:
+        return stateWasAccepted;
+    case QKeySequence::ExactMatch:
+        resetState();
+        dispatchEvent(e);
+    default:
+	break;
+    }
+    // If nextState is QKeySequence::ExactMatch && identicals.count == 0
+    // we've only found disabled shortcuts
+    return identicalMatches > 0 || result == QKeySequence::PartialMatch;
+}
+
+/*! \internal
+    Returns the next state of the statemachine
+    If return value is SequenceMatch::ExactMatch, then a call to matches()
+    will return a QObjects* list of all matching objects for the last matching
+    sequence.
+*/
+QKeySequence::SequenceMatch QShortcutMap::nextState(QKeyEvent *e)
+{
+    Q_D(QShortcutMap);
+    // Modifiers can NOT be shortcuts...
+    if (e->key() >= Qt::Key_Shift &&
+        e->key() <= Qt::Key_Alt)
+        return d->currentState;
+
+    QKeySequence::SequenceMatch result = QKeySequence::NoMatch;
+
+    // We start fresh each time..
+    d->identicals.resize(0);
+
+    result = find(e);
+    if (result == QKeySequence::NoMatch && e->modifiers() & Qt::ShiftModifier) {
+        // If Shift + Key_Backtab, also try Shift + Qt::Key_Tab
+        if (e->key() == Qt::Key_Backtab) {
+            QKeyEvent pe = QKeyEvent(e->type(), Qt::Key_Tab, e->modifiers(), e->text());
+            result = find(&pe);
+        }
+    }
+
+    // Should we eat this key press?
+    if (d->currentState == QKeySequence::PartialMatch
+        || (d->currentState == QKeySequence::ExactMatch && d->identicals.count()))
+        e->accept();
+    // Does the new state require us to clean up?
+    if (result == QKeySequence::NoMatch)
+        clearSequence(d->currentSequences);
+    d->currentState = result;
+
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug().nospace() << "QShortcutMap::nextState(" << e << ") = " << result;
+#endif
+    return result;
+}
+
+
+/*! \internal
+    Determines if an enabled shortcut has a matcing key sequence.
+*/
+bool QShortcutMap::hasShortcutForKeySequence(const QKeySequence &seq) const
+{
+    Q_D(const QShortcutMap);
+    QShortcutEntry entry(seq); // needed for searching
+    QList<QShortcutEntry>::ConstIterator itEnd = d->sequences.constEnd();
+    QList<QShortcutEntry>::ConstIterator it = qLowerBound(d->sequences.constBegin(), itEnd, entry);
+
+    for (;it != itEnd; ++it) {
+        if (matches(entry.keyseq, (*it).keyseq) == QKeySequence::ExactMatch && correctContext(*it) && (*it).enabled) {
+            return true;
+        }
+    }
+
+    //end of the loop: we didn't find anything
+    return false;
+}
+
+/*! \internal
+    Returns the next state of the statemachine, based
+    on the new key event \a e.
+    Matches are appended to the vector of identicals,
+    which can be access through matches().
+    \sa matches
+*/
+QKeySequence::SequenceMatch QShortcutMap::find(QKeyEvent *e)
+{
+    Q_D(QShortcutMap);
+    if (!d->sequences.count())
+        return QKeySequence::NoMatch;
+
+    createNewSequences(e, d->newEntries);
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug() << "Possible shortcut key sequences:" << d->newEntries;
+#endif
+
+    // Should never happen
+    if (d->newEntries == d->currentSequences) {
+        Q_ASSERT_X(e->key() != Qt::Key_unknown || e->text().length(),
+                   "QShortcutMap::find", "New sequence to find identical to previous");
+        return QKeySequence::NoMatch;
+    }
+
+    // Looking for new identicals, scrap old
+    d->identicals.resize(0);
+
+    bool partialFound = false;
+    bool identicalDisabledFound = false;
+    QVector<QKeySequence> okEntries;
+    int result = QKeySequence::NoMatch;
+    for (int i = d->newEntries.count()-1; i >= 0 ; --i) {
+        QShortcutEntry entry(d->newEntries.at(i)); // needed for searching
+        QList<QShortcutEntry>::ConstIterator itEnd = d->sequences.constEnd();
+        QList<QShortcutEntry>::ConstIterator it =
+             qLowerBound(d->sequences.constBegin(), itEnd, entry);
+
+        int oneKSResult = QKeySequence::NoMatch;
+        int tempRes = QKeySequence::NoMatch;
+        do {
+            if (it == itEnd)
+                break;
+            tempRes = matches(entry.keyseq, (*it).keyseq);
+            oneKSResult = qMax(oneKSResult, tempRes);
+            if (tempRes != QKeySequence::NoMatch && correctContext(*it)) {
+                if (tempRes == QKeySequence::ExactMatch) {
+                    if ((*it).enabled)
+                        d->identicals.append(&*it);
+                    else
+                        identicalDisabledFound = true;
+                } else if (tempRes == QKeySequence::PartialMatch) {
+                    // We don't need partials, if we have identicals
+                    if (d->identicals.size())
+                        break;
+                    // We only care about enabled partials, so we don't consume
+                    // key events when all partials are disabled!
+                    partialFound |= (*it).enabled;
+                }
+            }
+            ++it;
+            // If we got a valid match on this run, there might still be more keys to check against,
+            // so we'll loop once more. If we get NoMatch, there's guaranteed no more possible
+            // matches in the shortcutmap.
+        } while (tempRes != QKeySequence::NoMatch);
+
+        // If the type of match improves (ergo, NoMatch->Partial, or Partial->Exact), clear the
+        // previous list. If this match is equal or better than the last match, append to the list
+        if (oneKSResult > result) {
+            okEntries.clear();
+#if defined(DEBUG_QSHORTCUTMAP)
+            qDebug() << "Found better match (" << d->newEntries << "), clearing key sequence list";
+#endif
+        }
+        if (oneKSResult && oneKSResult >= result) {
+            okEntries << d->newEntries.at(i);
+#if defined(DEBUG_QSHORTCUTMAP)
+            qDebug() << "Added ok key sequence" << d->newEntries;
+#endif
+        }
+    }
+
+    if (d->identicals.size()) {
+        result = QKeySequence::ExactMatch;
+    } else if (partialFound) {
+        result = QKeySequence::PartialMatch;
+    } else if (identicalDisabledFound) {
+        result = QKeySequence::ExactMatch;
+    } else {
+        clearSequence(d->currentSequences);
+        result = QKeySequence::NoMatch;
+    }
+    if (result != QKeySequence::NoMatch)
+        d->currentSequences = okEntries;
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug() << "Returning shortcut match == " << result;
+#endif
+    return QKeySequence::SequenceMatch(result);
+}
+
+/*! \internal
+    Clears \a seq to an empty QKeySequence.
+    Same as doing (the slower)
+    \snippet doc/src/snippets/code/src_gui_kernel_qshortcutmap.cpp 0
+*/
+void QShortcutMap::clearSequence(QVector<QKeySequence> &ksl)
+{
+    ksl.clear();
+    d_func()->newEntries.clear();
+}
+
+/*! \internal
+    Alters \a seq to the new sequence state, based on the
+    current sequence state, and the new key event \a e.
+*/
+void QShortcutMap::createNewSequences(QKeyEvent *e, QVector<QKeySequence> &ksl)
+{
+    Q_D(QShortcutMap);
+    QList<int> possibleKeys = QKeyMapper::possibleKeys(e);
+    int pkTotal = possibleKeys.count();
+    if (!pkTotal)
+        return;
+
+    int ssActual = d->currentSequences.count();
+    int ssTotal = qMax(1, ssActual);
+    // Resize to possible permutations of the current sequence(s).
+    ksl.resize(pkTotal * ssTotal);
+
+    int index = ssActual ? d->currentSequences.at(0).count() : 0;
+    for (int pkNum = 0; pkNum < pkTotal; ++pkNum) {
+        for (int ssNum = 0; ssNum < ssTotal; ++ssNum) {
+            int i = (pkNum * ssTotal) + ssNum;
+            QKeySequence &curKsl = ksl[i];
+            if (ssActual) {
+                const QKeySequence &curSeq = d->currentSequences.at(ssNum);
+                curKsl.setKey(curSeq[0], 0);
+                curKsl.setKey(curSeq[1], 1);
+                curKsl.setKey(curSeq[2], 2);
+                curKsl.setKey(curSeq[3], 3);
+            } else {
+                curKsl.setKey(0, 0);
+                curKsl.setKey(0, 1);
+                curKsl.setKey(0, 2);
+                curKsl.setKey(0, 3);
+            }
+            // Filtering keycode here with 0xdfffffff to ignore the Keypad modifier
+            curKsl.setKey(possibleKeys.at(pkNum) & 0xdfffffff, index);
+        }
+    }
+}
+
+/*! \internal
+    Basically the same function as QKeySequence::matches(const QKeySequence &seq) const
+    only that is specially handles Key_hyphen as Key_Minus, as people mix these up all the time and
+    they conceptually the same.
+*/
+QKeySequence::SequenceMatch QShortcutMap::matches(const QKeySequence &seq1,
+                                                  const QKeySequence &seq2) const
+{
+    uint userN = seq1.count(),
+        seqN = seq2.count();
+
+    if (userN > seqN)
+        return QKeySequence::NoMatch;
+
+    // If equal in length, we have a potential ExactMatch sequence,
+    // else we already know it can only be partial.
+    QKeySequence::SequenceMatch match = (userN == seqN
+                                            ? QKeySequence::ExactMatch
+                                            : QKeySequence::PartialMatch);
+
+    for (uint i = 0; i < userN; ++i) {
+        int userKey = seq1[i],
+            sequenceKey = seq2[i];
+        if ((userKey & Qt::Key_unknown) == Qt::Key_hyphen)
+            userKey = (userKey & Qt::KeyboardModifierMask) | Qt::Key_Minus;
+        if ((sequenceKey & Qt::Key_unknown) == Qt::Key_hyphen)
+            sequenceKey = (sequenceKey & Qt::KeyboardModifierMask) | Qt::Key_Minus;
+        if (userKey != sequenceKey)
+            return QKeySequence::NoMatch;
+    }
+    return match;
+}
+
+/*! \internal
+    Returns true if the widget \a w is a logical sub window of the current
+    top-level widget.
+*/
+bool QShortcutMap::correctContext(const QShortcutEntry &item) const {
+    Q_ASSERT_X(item.owner, "QShortcutMap", "Shortcut has no owner. Illegal map state!");
+
+    QWidget *active_window = QApplication::activeWindow();
+
+    // popups do not become the active window,
+    // so we fake it here to get the correct context
+    // for the shortcut system.
+    if (QApplication::activePopupWidget())
+        active_window = QApplication::activePopupWidget();
+
+    if (!active_window)
+        return false;
+#ifndef QT_NO_ACTION
+    if (QAction *a = qobject_cast<QAction *>(item.owner))
+        return correctContext(item.context, a, active_window);
+#endif
+#ifndef QT_NO_GRAPHICSVIEW
+    if (QGraphicsWidget *gw = qobject_cast<QGraphicsWidget *>(item.owner))
+        return correctGraphicsWidgetContext(item.context, gw, active_window);
+#endif
+    QWidget *w = qobject_cast<QWidget *>(item.owner);
+    if (!w) {
+        QShortcut *s = qobject_cast<QShortcut *>(item.owner);
+        w = s->parentWidget();
+    }
+    return correctWidgetContext(item.context, w, active_window);
+}
+
+bool QShortcutMap::correctWidgetContext(Qt::ShortcutContext context, QWidget *w, QWidget *active_window) const
+{
+    bool visible = w->isVisible();    
+#ifdef Q_WS_MAC
+    if (!qApp->testAttribute(Qt::AA_DontUseNativeMenuBar) && qobject_cast<QMenuBar *>(w))
+        visible = true;
+#endif
+
+    if (!visible || !w->isEnabled())
+        return false;
+
+    if (context == Qt::ApplicationShortcut)
+        return QApplicationPrivate::tryModalHelper(w, 0); // true, unless w is shadowed by a modal dialog
+
+    if (context == Qt::WidgetShortcut)
+        return w == QApplication::focusWidget();
+
+    if (context == Qt::WidgetWithChildrenShortcut) {
+        const QWidget *tw = QApplication::focusWidget();
+        while (tw && tw != w && (tw->windowType() == Qt::Widget || tw->windowType() == Qt::Popup))
+            tw = tw->parentWidget();
+        return tw == w;
+    }
+
+    // Below is Qt::WindowShortcut context
+    QWidget *tlw = w->window();
+#ifndef QT_NO_GRAPHICSVIEW
+    if (QWExtra *topData = tlw->d_func()->extra) {
+        if (topData->proxyWidget) {
+            bool res = correctGraphicsWidgetContext(context, (QGraphicsWidget *)topData->proxyWidget, active_window);
+            return res;
+        }
+    }
+#endif
+
+    /* if a floating tool window is active, keep shortcuts on the
+     * parent working */
+    if (active_window != tlw && active_window && active_window->windowType() == Qt::Tool && active_window->parentWidget()) {
+        active_window = active_window->parentWidget()->window();
+    }
+
+    if (active_window  != tlw)
+        return false;
+
+    /* if we live in a MDI subwindow, ignore the event if we are
+       not the active document window */
+    const QWidget* sw = w;
+    while (sw && !(sw->windowType() == Qt::SubWindow) && !sw->isWindow())
+        sw = sw->parentWidget();
+    if (sw && (sw->windowType() == Qt::SubWindow)) {
+        QWidget *focus_widget = QApplication::focusWidget();
+        while (focus_widget && focus_widget != sw)
+            focus_widget = focus_widget->parentWidget();
+        return sw == focus_widget;
+    }
+
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug().nospace() << "..true [Pass-through]";
+#endif
+    return true;
+}
+
+#ifndef QT_NO_GRAPHICSVIEW
+bool QShortcutMap::correctGraphicsWidgetContext(Qt::ShortcutContext context, QGraphicsWidget *w, QWidget *active_window) const
+{
+    bool visible = w->isVisible();
+#ifdef Q_WS_MAC
+    if (!qApp->testAttribute(Qt::AA_DontUseNativeMenuBar) && qobject_cast<QMenuBar *>(w))
+        visible = true;
+#endif
+
+    if (!visible || !w->isEnabled() || !w->scene())
+        return false;
+
+    if (context == Qt::ApplicationShortcut) {
+        // Applicationwide shortcuts are always reachable unless their owner
+        // is shadowed by modality. In QGV there's no modality concept, but we
+        // must still check if all views are shadowed.
+        QList<QGraphicsView *> views = w->scene()->views();
+        for (int i = 0; i < views.size(); ++i) {
+            if (QApplicationPrivate::tryModalHelper(views.at(i), 0))
+                return true;
+        }
+        return false;
+    }
+
+    if (context == Qt::WidgetShortcut)
+        return static_cast<QGraphicsItem *>(w) == w->scene()->focusItem();
+
+    if (context == Qt::WidgetWithChildrenShortcut) {
+        const QGraphicsItem *ti = w->scene()->focusItem();
+        if (ti && ti->isWidget()) {
+            const QGraphicsWidget *tw = static_cast<const QGraphicsWidget *>(ti);
+            while (tw && tw != w && (tw->windowType() == Qt::Widget || tw->windowType() == Qt::Popup))
+                tw = tw->parentWidget();
+            return tw == w;
+        }
+        return false;
+    }
+
+    // Below is Qt::WindowShortcut context
+
+    // Find the active view (if any).
+    QList<QGraphicsView *> views = w->scene()->views();
+    QGraphicsView *activeView = 0;
+    for (int i = 0; i < views.size(); ++i) {
+        QGraphicsView *view = views.at(i);
+        if (view->window() == active_window) {
+            activeView = view;
+            break;
+        }
+    }
+    if (!activeView)
+        return false;
+
+    // The shortcut is reachable if owned by a windowless widget, or if the
+    // widget's window is the same as the focus item's window.
+    QGraphicsWidget *a = w->scene()->activeWindow();
+    return !w->window() || a == w->window();
+}
+#endif
+
+#ifndef QT_NO_ACTION
+bool QShortcutMap::correctContext(Qt::ShortcutContext context, QAction *a, QWidget *active_window) const
+{
+    const QList<QWidget *> &widgets = a->d_func()->widgets;
+#if defined(DEBUG_QSHORTCUTMAP)
+    if (widgets.isEmpty())
+        qDebug() << a << "not connected to any widgets; won't trigger";
+#endif
+    for (int i = 0; i < widgets.size(); ++i) {
+        QWidget *w = widgets.at(i);
+#ifndef QT_NO_MENU
+        if (QMenu *menu = qobject_cast<QMenu *>(w)) {
+            QAction *a = menu->menuAction();
+            if (correctContext(context, a, active_window))
+                return true;
+        } else
+#endif
+            if (correctWidgetContext(context, w, active_window))
+                return true;
+    }
+
+#ifndef QT_NO_GRAPHICSVIEW
+    const QList<QGraphicsWidget *> &graphicsWidgets = a->d_func()->graphicsWidgets;
+#if defined(DEBUG_QSHORTCUTMAP)
+    if (graphicsWidgets.isEmpty())
+        qDebug() << a << "not connected to any widgets; won't trigger";
+#endif
+    for (int i = 0; i < graphicsWidgets.size(); ++i) {
+        QGraphicsWidget *w = graphicsWidgets.at(i);
+        if (correctGraphicsWidgetContext(context, w, active_window))
+            return true;
+    }
+#endif
+    return false;
+}
+#endif // QT_NO_ACTION
+
+/*! \internal
+    Converts keyboard button states into modifier states
+*/
+int QShortcutMap::translateModifiers(Qt::KeyboardModifiers modifiers)
+{
+    int result = 0;
+    if (modifiers & Qt::ShiftModifier)
+        result |= Qt::SHIFT;
+    if (modifiers & Qt::ControlModifier)
+        result |= Qt::CTRL;
+    if (modifiers & Qt::MetaModifier)
+        result |= Qt::META;
+    if (modifiers & Qt::AltModifier)
+        result |= Qt::ALT;
+    return result;
+}
+
+/*! \internal
+    Returns the vector of QShortcutEntry's matching the last Identical state.
+*/
+QVector<const QShortcutEntry*> QShortcutMap::matches() const
+{
+    Q_D(const QShortcutMap);
+    return d->identicals;
+}
+
+/*! \internal
+    Dispatches QShortcutEvents to widgets who grabbed the matched key sequence.
+*/
+void QShortcutMap::dispatchEvent(QKeyEvent *e)
+{
+    Q_D(QShortcutMap);
+    if (!d->identicals.size())
+        return;
+
+    const QKeySequence &curKey = d->identicals.at(0)->keyseq;
+    if (d->prevSequence != curKey) {
+        d->ambigCount = 0;
+        d->prevSequence = curKey;
+    }
+    // Find next
+    const QShortcutEntry *current = 0, *next = 0;
+    int i = 0, enabledShortcuts = 0;
+    while(i < d->identicals.size()) {
+        current = d->identicals.at(i);
+        if (current->enabled || !next){
+            ++enabledShortcuts;
+            if (enabledShortcuts > d->ambigCount + 1)
+                break;
+            next = current;
+        }
+        ++i;
+    }
+    d->ambigCount = (d->identicals.size() == i ? 0 : d->ambigCount + 1);
+    // Don't trigger shortcut if we're autorepeating and the shortcut is
+    // grabbed with not accepting autorepeats.
+    if (!next || (e->isAutoRepeat() && !next->autorepeat))
+        return;
+    // Dispatch next enabled
+#if defined(DEBUG_QSHORTCUTMAP)
+    qDebug().nospace()
+        << "QShortcutMap::dispatchEvent(): Sending QShortcutEvent(\""
+        << (QString)next->keyseq << "\", " << next->id << ", "
+        << (bool)(enabledShortcuts>1) << ") to object(" << next->owner << ')';
+#endif
+    QShortcutEvent se(next->keyseq, next->id, enabledShortcuts>1);
+    QApplication::sendEvent(const_cast<QObject *>(next->owner), &se);
+}
+
+/* \internal
+    QShortcutMap dump function, only available when DEBUG_QSHORTCUTMAP is
+    defined.
+*/
+#if defined(Dump_QShortcutMap)
+void QShortcutMap::dumpMap() const
+{
+    Q_D(const QShortcutMap);
+    for (int i = 0; i < d->sequences.size(); ++i)
+        qDebug().nospace() << &(d->sequences.at(i));
+}
+#endif
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SHORTCUT