signalsloteditorwindow.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

void InlineEditorModel::addText(const QString &text)
{
    int cnt = rowCount();
    insertRows(cnt, 1);
    setData(index(cnt, 0), text, Qt::DisplayRole);
}

void InlineEditorModel::addTextList(const QStringList &text_list)
{
    int cnt = rowCount();
    insertRows(cnt, text_list.size());
    foreach (QString text, text_list) {
        QModelIndex text_idx = index(cnt++, 0);
        setData(text_idx, text, Qt::DisplayRole);
    }
}

Qt::ItemFlags InlineEditorModel::flags(const QModelIndex &index) const
{
    if (isTitle(index.row()))
        return Qt::ItemIsEnabled;
    else
        return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
}

int InlineEditorModel::findText(const QString &text) const
{
    int cnt = rowCount();
    for (int i = 0; i < cnt; ++i) {
        QModelIndex idx = index(i, 0);
        if (data(idx, Qt::UserRole).toInt() == TITLE_ITEM)
            continue;
        if (data(idx, Qt::DisplayRole).toString() == text)
            return i;
    }
    return -1;
}

InlineEditor::InlineEditor(QWidget *parent)
    : QComboBox(parent)
{
    setModel(m_model = new InlineEditorModel(0, 4, this));
    setFrame(false);
    m_idx = -1;
    connect(this, SIGNAL(activated(int)), this, SLOT(checkSelection(int)));
}

InlineEditor::~InlineEditor()
{
}

void InlineEditor::checkSelection(int idx)
{
    if (idx == m_idx)
        return;

   if (m_model->isTitle(idx))
        setCurrentIndex(m_idx);
    else
        m_idx = idx;
}

void InlineEditor::addTitle(const QString &title)
{
    m_model->addTitle(title);
}

void InlineEditor::addTextList(const QStringList &text_list)
{
    m_model->addTextList(text_list);
}

void InlineEditor::addText(const QString &text)
{
    m_model->addText(text);
}

QString InlineEditor::text() const
{
    return currentText();
}

void InlineEditor::setText(const QString &text)
{
    m_idx = m_model->findText(text);
    if (m_idx == -1)
        m_idx = 0;
    setCurrentIndex(m_idx);
}

/*******************************************************************************
** ConnectionDelegate
*/

class ConnectionDelegate : public QItemDelegate
{
    Q_OBJECT
public:
    ConnectionDelegate(QWidget *parent = 0);

    void setForm(QDesignerFormWindowInterface *form);

    virtual QWidget *createEditor(QWidget *parent,
                                    const QStyleOptionViewItem &option,
                                    const QModelIndex &index) const;

private slots:
    void emitCommitData();

private:
    QDesignerFormWindowInterface *m_form;
};

ConnectionDelegate::ConnectionDelegate(QWidget *parent)
    : QItemDelegate(parent)
{
    m_form = 0;

    static QItemEditorFactory *factory = 0;
    if (factory == 0) {
        factory = new QItemEditorFactory;
        QItemEditorCreatorBase *creator
            = new QItemEditorCreator<InlineEditor>("text");
        factory->registerEditor(QVariant::String, creator);
    }

    setItemEditorFactory(factory);
}

void ConnectionDelegate::setForm(QDesignerFormWindowInterface *form)
{
    m_form = form;
}

QWidget *ConnectionDelegate::createEditor(QWidget *parent,
                                                const QStyleOptionViewItem &option,
                                                const QModelIndex &index) const
{
    if (m_form == 0)
        return 0;

    QWidget *w = QItemDelegate::createEditor(parent, option, index);
    InlineEditor *inline_editor = qobject_cast<InlineEditor*>(w);
    Q_ASSERT(inline_editor != 0);
    const QAbstractItemModel *model = index.model();

    QModelIndex obj_name_idx = model->index(index.row(), index.column() <= 1 ? 0 : 2);
    QString obj_name = model->data(obj_name_idx, Qt::DisplayRole).toString();

    if (index.column() == 0 || index.column() == 2) { // object names
        QStringList obj_name_list = objectNameList(m_form);
        obj_name_list.prepend(tr("<object>"));
        inline_editor->addTextList(obj_name_list);
    } else { // signals, slots
        MemberType type = index.column() == 1 ? SignalMember : SlotMember;
        QModelIndex peer_index = model->index(index.row(), type == SignalMember ? 3 : 1);
        QString peer = model->data(peer_index, Qt::DisplayRole).toString();
        ClassList class_list = classList(obj_name, type, peer, m_form);

        inline_editor->addText(type == SignalMember ? tr("<signal>") : tr("<slot>"));
        foreach (const ClassInfo &class_info, class_list) {
            if (class_info.class_name.isEmpty() || class_info.member_list.isEmpty())
                continue;
            inline_editor->addTitle(class_info.class_name);
            inline_editor->addTextList(class_info.member_list);
        }
    }

    connect(inline_editor, SIGNAL(activated(int)), this, SLOT(emitCommitData()));

    return inline_editor;
}

void ConnectionDelegate::emitCommitData()
{
    InlineEditor *editor = qobject_cast<InlineEditor*>(sender());
    emit commitData(editor);
}

/*******************************************************************************
** SignalSlotEditorWindow
*/

SignalSlotEditorWindow::SignalSlotEditorWindow(QDesignerFormEditorInterface *core,
                                                QWidget *parent)
    : QWidget(parent)
{
    m_handling_selection_change = false;

    m_editor = 0;
    m_view = new QTreeView(this);
    m_view->setItemDelegate(new ConnectionDelegate(this));
    m_view->setEditTriggers(QAbstractItemView::SelectedClicked
                                | QAbstractItemView::EditKeyPressed);
    m_view->setRootIsDecorated(false);
    connect(m_view, SIGNAL(activated(QModelIndex)), this, SLOT(updateUi()));

    QVBoxLayout *layout = new QVBoxLayout(this);
    layout->setMargin(0);
    layout->addWidget(m_view);

    QHBoxLayout *layout2 = new QHBoxLayout;
    layout2->setMargin(3);
    layout->addLayout(layout2);
    layout2->addStretch();

    m_remove_button = new QToolButton(this);
    m_remove_button->setIcon(createIconSet(QLatin1String("minus.png")));
    connect(m_remove_button, SIGNAL(clicked()), this, SLOT(removeConnection()));
    layout2->addWidget(m_remove_button);

    m_add_button = new QToolButton(this);
    m_add_button->setIcon(createIconSet(QLatin1String("plus.png")));
    connect(m_add_button, SIGNAL(clicked()), this, SLOT(addConnection()));
    layout2->addWidget(m_add_button);

    connect(core->formWindowManager(),
            SIGNAL(activeFormWindowChanged(QDesignerFormWindowInterface*)),
                this, SLOT(setActiveFormWindow(QDesignerFormWindowInterface*)));

    updateUi();
}

void SignalSlotEditorWindow::setActiveFormWindow(QDesignerFormWindowInterface *form)
{
    m_view->setModel(0);

    if (!m_editor.isNull()) {
        disconnect(m_view->selectionModel(),
                    SIGNAL(currentChanged(QModelIndex,QModelIndex)),
                    this, SLOT(updateEditorSelection(QModelIndex)));
        disconnect(m_editor, SIGNAL(connectionSelected(Connection*)),
                    this, SLOT(updateDialogSelection(Connection*)));
    }

    m_editor = qFindChild<SignalSlotEditor*>(form);

    if (!m_editor.isNull()) {
        m_view->setModel(m_editor->model());
        ConnectionDelegate *delegate
            = qobject_cast<ConnectionDelegate*>(m_view->itemDelegate());
        if (delegate != 0)
            delegate->setForm(form);

        connect(m_view->selectionModel(),
                SIGNAL(currentChanged(QModelIndex,QModelIndex)),
                this, SLOT(updateEditorSelection(QModelIndex)));
        connect(m_editor, SIGNAL(connectionSelected(Connection*)),
                this, SLOT(updateDialogSelection(Connection*)));
    }

    updateUi();
}

void SignalSlotEditorWindow::updateDialogSelection(Connection *con)
{
    if (m_handling_selection_change || m_editor == 0)
        return;

    ConnectionModel *model = qobject_cast<ConnectionModel*>(m_editor->model());
    Q_ASSERT(model != 0);
    QModelIndex index = model->connectionToIndex(con);
    if (index == m_view->currentIndex())
        return;
    m_handling_selection_change = true;
    m_view->setCurrentIndex(index);
    m_handling_selection_change = false;

    updateUi();
}

void SignalSlotEditorWindow::updateEditorSelection(const QModelIndex &index)
{
    if (m_handling_selection_change || m_editor == 0)
        return;

    if (m_editor == 0)
        return;

    ConnectionModel *model = qobject_cast<ConnectionModel*>(m_editor->model());
    Q_ASSERT(model != 0);
    Connection *con = model->indexToConnection(index);
    if (m_editor->selected(con))
        return;
    m_handling_selection_change = true;
    m_editor->selectNone();
    m_editor->setSelected(con, true);
    m_handling_selection_change = false;

    updateUi();
}

void SignalSlotEditorWindow::addConnection()
{
    if (m_editor.isNull())
        return;

    m_editor->addEmptyConnection();
    updateUi();
}

void SignalSlotEditorWindow::removeConnection()
{
    if (m_editor.isNull())
        return;

    m_editor->deleteSelected();
    updateUi();
}

void SignalSlotEditorWindow::updateUi()
{
    m_add_button->setEnabled(!m_editor.isNull());
    m_remove_button->setEnabled(!m_editor.isNull() && m_view->currentIndex().isValid());
}

} // namespace qdesigner_internal

#include "signalsloteditorwindow.moc"