signalsloteditorwindow.cpp

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**
** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
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** This file is part of the Qt Designer of the Qt Toolkit.
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/*
TRANSLATOR qdesigner_internal::ConnectionModel
*/

#include "signalsloteditorwindow.h"
#include "signalsloteditor_p.h"
#include "signalsloteditor.h"
#include "qdesigner_integration_p.h"

#include <iconloader_p.h>
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerFormWindowManagerInterface>

#include <QtCore/QAbstractItemModel>
#include <QtCore/QDebug>
#include <QtGui/QStandardItemModel>
#include <QtGui/QComboBox>
#include <QtGui/QApplication>
#include <QtGui/QItemDelegate>
#include <QtGui/QItemEditorFactory>
#include <QtGui/QTreeView>
#include <QtGui/QVBoxLayout>
#include <QtGui/QToolButton>
#include <QtGui/QMessageBox>

namespace qdesigner_internal {

/*******************************************************************************
** ConnectionModel
*/

ConnectionModel::ConnectionModel(SignalSlotEditor *editor, QObject *parent)
    : QAbstractItemModel(parent)
{
    m_editor = editor;

    connect(m_editor, SIGNAL(connectionAdded(Connection*)),
            this, SLOT(connectionAdded(Connection*)));
    connect(m_editor, SIGNAL(connectionRemoved(int)),
            this, SLOT(connectionRemoved(int)));
    connect(m_editor, SIGNAL(aboutToRemoveConnection(Connection*)),
            this, SLOT(aboutToRemoveConnection(Connection*)));
    connect(m_editor, SIGNAL(aboutToAddConnection(int)),
            this, SLOT(aboutToAddConnection(int)));
    connect(m_editor, SIGNAL(connectionChanged(Connection*)),
            this, SLOT(connectionChanged(Connection*)));
}

QVariant ConnectionModel::headerData(int section, Qt::Orientation orientation,
                                        int role) const
{
    if (orientation == Qt::Vertical || role != Qt::DisplayRole)
        return QVariant();

    static const QVariant senderTitle = tr("Sender");
    static const QVariant signalTitle = tr("Signal");
    static const QVariant receiverTitle = tr("Receiver");
    static const QVariant slotTitle = tr("Slot");

    switch (section) {
    case 0:
        return senderTitle;
    case 1:
        return signalTitle;
    case 2:
        return receiverTitle;
    case 3:
        return slotTitle;
    }
    return  QVariant();
}

QModelIndex ConnectionModel::index(int row, int column,
                                    const QModelIndex &parent) const
{
    if (parent.isValid())
        return QModelIndex();
    if (row < 0 || row >= m_editor->connectionCount())
        return QModelIndex();
    return createIndex(row, column);
}

Connection *ConnectionModel::indexToConnection(const QModelIndex &index) const
{
    if (!index.isValid())
        return 0;
    if (index.row() < 0 || index.row() >= m_editor->connectionCount())
        return 0;
    return m_editor->connection(index.row());
}

QModelIndex ConnectionModel::connectionToIndex(Connection *con) const
{
    return createIndex(m_editor->indexOfConnection(con), 0);
}

QModelIndex ConnectionModel::parent(const QModelIndex&) const
{
    return QModelIndex();
}

int ConnectionModel::rowCount(const QModelIndex &parent) const
{
    if (parent.isValid())
        return 0;
    return m_editor->connectionCount();
}

int ConnectionModel::columnCount(const QModelIndex &parent) const
{
    if (parent.isValid())
        return 0;
    return 4;
}

QVariant ConnectionModel::data(const QModelIndex &index, int role) const
{
    if (role != Qt::DisplayRole && role != Qt::EditRole)
        return QVariant();

    if (index.row() < 0 || index.row() >= m_editor->connectionCount()) {
        return QVariant();
    }

    const SignalSlotConnection *con = static_cast<SignalSlotConnection*>(m_editor->connection(index.row()));
    Q_ASSERT(con != 0);

    static const QVariant senderDefault = tr("<sender>");
    static const QVariant signalDefault = tr("<signal>");
    static const QVariant receiverDefault = tr("<receiver>");
    static const QVariant slotDefault = tr("<slot>");

    switch (index.column()) {
        case 0: {
            const QString sender = con->sender();
            if (sender.isEmpty())
                return senderDefault;
            return sender;
        }
        case 1: {
            const QString signal = con->signal();
            if (signal.isEmpty())
                return signalDefault;
            return signal;
        }
        case 2: {
            const QString receiver = con->receiver();
            if (receiver.isEmpty())
                return receiverDefault;
            return receiver;
        }
        case 3: {
            const QString slot = con->slot();
            if (slot.isEmpty())
                return slotDefault;
            return slot;
        }
    }
    return QVariant();
}

bool ConnectionModel::setData(const QModelIndex &index, const QVariant &data, int)
{
    if (!index.isValid())
        return false;
    if (data.type() != QVariant::String)
        return false;

    SignalSlotConnection *con = static_cast<SignalSlotConnection*>(m_editor->connection(index.row()));
    QDesignerFormWindowInterface *form = m_editor->formWindow();

    QString s = data.toString();
    switch (index.column()) {
        case 0: {
            if (!s.isEmpty() && !objectNameList(form).contains(s))
                s.clear();
            m_editor->setSource(con, s);
            break;
        }
        case 1: {
            if (!memberList(form, con->object(CETypes::EndPoint::Source), SignalMember).contains(s))
                s.clear();
            m_editor->setSignal(con, s);
            break;
        }
        case 2: {
            if (!s.isEmpty() && !objectNameList(form).contains(s))
                s.clear();
            m_editor->setTarget(con, s);
            break;
        }
        case 3: {
            if (!memberList(form, con->object(CETypes::EndPoint::Target), SlotMember).contains(s))
                s.clear();
            m_editor->setSlot(con, s);
            break;
        }
    }

    return true;
}

void ConnectionModel::connectionAdded(Connection*)
{
    endInsertRows();
}

void ConnectionModel::connectionRemoved(int)
{
    endRemoveRows();
}

void ConnectionModel::aboutToRemoveConnection(Connection *con)
{
    int idx = m_editor->indexOfConnection(con);
    beginRemoveRows(QModelIndex(), idx, idx);
}

void ConnectionModel::aboutToAddConnection(int idx)
{
    beginInsertRows(QModelIndex(), idx, idx);
}

Qt::ItemFlags ConnectionModel::flags(const QModelIndex&) const
{
    return Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsEnabled;
}

void ConnectionModel::connectionChanged(Connection *con)
{
    const int idx = m_editor->indexOfConnection(con);
    SignalSlotConnection *changedCon = static_cast<SignalSlotConnection*>(m_editor->connection(idx));
    SignalSlotConnection *c = 0;
    for (int i=0; i<m_editor->connectionCount(); ++i) {
        if (i == idx)
            continue;
        c = static_cast<SignalSlotConnection*>(m_editor->connection(i));
        if (c->sender() == changedCon->sender() && c->signal() == changedCon->signal()
            && c->receiver() == changedCon->receiver() && c->slot() == changedCon->slot()) {
                QMessageBox::warning(m_editor->parentWidget(), tr("Signal and Slot Editor"),
                    tr("The connection already exists!<br>SENDER(%1), SIGNAL(%2), RECEIVER(%3), SLOT(%4)")
                    .arg(changedCon->sender())
                    .arg(changedCon->signal())
                    .arg(changedCon->receiver())
                    .arg(changedCon->slot()));
                break;
        }
    }
    emit dataChanged(createIndex(idx, 0), createIndex(idx, 3));
}

void ConnectionModel::updateAll()
{
    emit dataChanged(index(0, 0), index(rowCount(), columnCount()));
}

/*******************************************************************************
** InlineEditor
*/

#define TITLE_ITEM 1

class InlineEditorModel : public QStandardItemModel
{
    Q_OBJECT
public:
    InlineEditorModel(int rows, int cols, QObject *parent = 0);

    void addTitle(const QString &title);
    void addTextList(const QStringList &text_list);
    void addText(const QString &text);
    bool isTitle(int idx) const;

    int findText(const QString &text) const;

    virtual Qt::ItemFlags flags(const QModelIndex &index) const;
};

class InlineEditor : public QComboBox
{
    Q_OBJECT
    Q_PROPERTY(QString text READ text WRITE setText USER true)
public:
    InlineEditor(QWidget *parent = 0);
    ~InlineEditor();

    QString text() const;
    void setText(const QString &text);

    void addTitle(const QString &title);
    void addText(const QString &text);
    void addTextList(const QStringList &text_list);

private slots:
    void checkSelection(int idx);

private:
    InlineEditorModel *m_model;
    int m_idx;
};

InlineEditorModel::InlineEditorModel(int rows, int cols, QObject *parent)
    : QStandardItemModel(rows, cols, parent)
{
}

void InlineEditorModel::addTitle(const QString &title)
{
    const int cnt = rowCount();
    insertRows(cnt, 1);
    QModelIndex cat_idx = index(cnt, 0);
    setData(cat_idx, title + QLatin1Char(':'), Qt::DisplayRole);
    setData(cat_idx, TITLE_ITEM, Qt::UserRole);
    QFont font = QApplication::font();
    font.setBold(true);