qdesigner_command.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 2,136 行 · 第 1/5 页

        if (text.isEmpty()) // Legacy behaviour: auto-generate number for empty items
             return;
        QString defaultText;
        defaultText.setNum(i+1);
        if (text == defaultText)
            return;
    }
    headerMap->insert(i, QPair<QString, QIcon>(text, icon));
}

void ChangeTableContentsCommand::init(QTableWidget *tableWidget, QTableWidget *fromTableWidget)
{
    m_tableWidget = tableWidget;

    m_oldItemsState.clear();
    m_newItemsState.clear();
    m_oldHorizontalHeaderState.clear();
    m_newHorizontalHeaderState.clear();
    m_oldVerticalHeaderState.clear();
    m_newVerticalHeaderState.clear();

    m_oldColumnCount = tableWidget->columnCount();
    m_oldRowCount = tableWidget->rowCount();
    m_newColumnCount = fromTableWidget->columnCount();
    m_newRowCount = fromTableWidget->rowCount();

    for (int col = 0; col < m_oldColumnCount; col++)
        if (const QTableWidgetItem *item = tableWidget->horizontalHeaderItem(col))
            insertHeaderItem(item->text(), item->icon(), col, &m_oldHorizontalHeaderState);

    for (int row = 0; row < m_oldRowCount; row++)
        if (const QTableWidgetItem *item = tableWidget->verticalHeaderItem(row))
            insertHeaderItem(item->text(), item->icon(), row,  &m_oldVerticalHeaderState);

    for (int col = 0; col < m_oldColumnCount; col++) {
        for (int row = 0; row < m_oldRowCount; row++) {
            const QTableWidgetItem *item = tableWidget->item(row, col);
            if (item) {
                const QString text = item->text();
                const QIcon icon = item->icon();
                if (!text.isEmpty() || !icon.isNull()) {
                    m_oldItemsState[qMakePair<int, int>(row, col)] =
                                qMakePair<QString, QIcon>(text, icon);
                }
            }
        }
    }

    for (int col = 0; col < m_newColumnCount; col++)
        if (const QTableWidgetItem *item = fromTableWidget->horizontalHeaderItem(col))
            insertHeaderItem(item->text(), item->icon(), col, &m_newHorizontalHeaderState);

    for (int row = 0; row < m_newRowCount; row++)
        if (const QTableWidgetItem *item = fromTableWidget->verticalHeaderItem(row))
            insertHeaderItem(item->text(), item->icon(), row, &m_newVerticalHeaderState);

    for (int col = 0; col < m_newColumnCount; col++) {
        for (int row = 0; row < m_newRowCount; row++) {
            const QTableWidgetItem *item = fromTableWidget->item(row, col);
            if (item) {
                const QString text = item->text();
                const QIcon icon = item->icon();
                if (!text.isEmpty() || !icon.isNull()) {
                    m_newItemsState[qMakePair<int, int>(row, col)] =
                                qMakePair<QString, QIcon>(text, icon);
                }
            }
        }
    }
}

void ChangeTableContentsCommand::changeContents(QTableWidget *tableWidget,
        int rowCount, int columnCount,
        const QMap<int, QPair<QString, QIcon> > &horizontalHeaderState,
        const QMap<int, QPair<QString, QIcon> > &verticalHeaderState,
        const QMap<QPair<int, int>, QPair<QString, QIcon> > &itemsState) const
{
    tableWidget->clear();

    tableWidget->setColumnCount(columnCount);
    QMap<int, QPair<QString, QIcon> >::ConstIterator itColumn =
                horizontalHeaderState.constBegin();
    while (itColumn != horizontalHeaderState.constEnd()) {
        const int column = itColumn.key();
        const QString text = itColumn.value().first;
        const QIcon icon = itColumn.value().second;
        QTableWidgetItem *item = new QTableWidgetItem;
        item->setText(text);
        item->setIcon(icon);
        tableWidget->setHorizontalHeaderItem(column, item);

        itColumn++;
    }

    tableWidget->setRowCount(rowCount);
    QMap<int, QPair<QString, QIcon> >::ConstIterator itRow =
                verticalHeaderState.constBegin();
    while (itRow != verticalHeaderState.constEnd()) {
        const int row = itRow.key();
        const QString text = itRow.value().first;
        const QIcon icon = itRow.value().second;
        QTableWidgetItem *item = new QTableWidgetItem;
        item->setText(text);
        item->setIcon(icon);
        tableWidget->setVerticalHeaderItem(row, item);

        itRow++;
    }

    QMap<QPair<int, int>, QPair<QString, QIcon> >::ConstIterator itItem =
                itemsState.constBegin();
    while (itItem != itemsState.constEnd()) {
        const int row = itItem.key().first;
        const int column = itItem.key().second;
        const QString text = itItem.value().first;
        const QIcon icon = itItem.value().second;
        QTableWidgetItem *item = new QTableWidgetItem;
        item->setText(text);
        item->setIcon(icon);
        tableWidget->setItem(row, column, item);

        itItem++;
    }

    QMetaObject::invokeMethod(tableWidget, "updateGeometries");
}

void ChangeTableContentsCommand::redo()
{
    changeContents(m_tableWidget, m_newRowCount, m_newColumnCount,
                m_newHorizontalHeaderState, m_newVerticalHeaderState, m_newItemsState);
}

void ChangeTableContentsCommand::undo()
{
    changeContents(m_tableWidget, m_oldRowCount, m_oldColumnCount,
                m_oldHorizontalHeaderState, m_oldVerticalHeaderState, m_oldItemsState);
}

// ---- ChangeTreeContentsCommand ----
ChangeTreeContentsCommand::ChangeTreeContentsCommand(QDesignerFormWindowInterface *formWindow)
    : QDesignerFormWindowCommand(QApplication::translate("Command", "Change Tree Contents"), formWindow),
        m_oldHeaderItemState(0),
        m_newHeaderItemState(0),
        m_oldColumnCount(0),
        m_newColumnCount(0)
{

}

ChangeTreeContentsCommand::~ChangeTreeContentsCommand()
{
    clearState(m_oldItemsState, m_oldHeaderItemState);
    clearState(m_newItemsState, m_newHeaderItemState);
}

void ChangeTreeContentsCommand::init(QTreeWidget *treeWidget, QTreeWidget *fromTreeWidget)
{
    m_treeWidget = treeWidget;
    m_oldColumnCount = treeWidget->columnCount();
    m_newColumnCount = fromTreeWidget->columnCount();

    initState(m_oldItemsState, m_oldHeaderItemState, treeWidget);
    initState(m_newItemsState, m_newHeaderItemState, fromTreeWidget);
}

void ChangeTreeContentsCommand::redo()
{
    changeContents(m_treeWidget, m_newColumnCount, m_newItemsState, m_newHeaderItemState);
}

void ChangeTreeContentsCommand::undo()
{
    changeContents(m_treeWidget, m_oldColumnCount, m_oldItemsState, m_oldHeaderItemState);
}

void ChangeTreeContentsCommand::initState(QList<QTreeWidgetItem *> &itemsState,
                QTreeWidgetItem *&headerItemState, QTreeWidget *fromTreeWidget) const
{
    clearState(itemsState, headerItemState);

    for (int i = 0; i < fromTreeWidget->topLevelItemCount(); i++)
        itemsState.append(fromTreeWidget->topLevelItem(i)->clone());

    headerItemState = fromTreeWidget->headerItem()->clone();
}

void ChangeTreeContentsCommand::changeContents(QTreeWidget *treeWidget, int columnCount,
        const QList<QTreeWidgetItem *> &itemsState, const QTreeWidgetItem *headerItemState) const
{
    treeWidget->clear();
    treeWidget->setColumnCount(columnCount);

    treeWidget->setHeaderItem(headerItemState->clone());

    if (!columnCount)
        return;

    foreach (QTreeWidgetItem *item, itemsState)
        treeWidget->addTopLevelItem(item->clone());
}

void ChangeTreeContentsCommand::clearState(QList<QTreeWidgetItem *> &itemsState,
            QTreeWidgetItem *&headerItemState) const
{
    QListIterator<QTreeWidgetItem *> it(itemsState);
    while (it.hasNext())
        delete it.next();
    itemsState.clear();
    if (headerItemState)
        delete headerItemState;
    headerItemState = 0;
}

// ---- ChangeListContentsCommand ----
ChangeListContentsCommand::ChangeListContentsCommand(QDesignerFormWindowInterface *formWindow)
    : QDesignerFormWindowCommand(QString(), formWindow)
{

}

void ChangeListContentsCommand::init(QListWidget *listWidget,
                const QList<QPair<QString, QIcon> > &items)
{
    m_listWidget = listWidget;
    m_comboBox = 0;

    m_newItemsState = items;
    m_oldItemsState.clear();

    for (int i = 0; i < listWidget->count(); i++) {
        const QListWidgetItem *item = listWidget->item(i);
        const QString text = item->text();
       const  QIcon icon = item->icon();

        m_oldItemsState.append(qMakePair<QString, QIcon>(text, icon));
    }
}

void ChangeListContentsCommand::init(QComboBox *comboBox,
                const QList<QPair<QString, QIcon> > &items)
{
    m_listWidget = 0;
    m_comboBox = comboBox;

    m_newItemsState = items;
    m_oldItemsState.clear();

    for (int i = 0; i < comboBox->count(); i++) {
        const QString text = comboBox->itemText(i);
        const QIcon icon = comboBox->itemIcon(i);

        m_oldItemsState.append(qMakePair<QString, QIcon>(text, icon));
    }
}

void ChangeListContentsCommand::redo()
{
    if (m_listWidget)
        changeContents(m_listWidget, m_newItemsState);
    else if (m_comboBox)
        changeContents(m_comboBox, m_newItemsState);
}

void ChangeListContentsCommand::undo()
{
    if (m_listWidget)
        changeContents(m_listWidget, m_oldItemsState);
    else if (m_comboBox)
        changeContents(m_comboBox, m_oldItemsState);
}

void ChangeListContentsCommand::changeContents(QListWidget *listWidget,
        const QList<QPair<QString, QIcon> > &itemsState) const
{
    listWidget->clear();
    QListIterator<QPair<QString, QIcon> > it(itemsState);
    while (it.hasNext()) {
        const QPair<QString, QIcon> pair = it.next();
        QListWidgetItem *item = new QListWidgetItem(pair.second, pair.first);
        listWidget->addItem(item);
    }
}

void ChangeListContentsCommand::changeContents(QComboBox *comboBox,
        const QList<QPair<QString, QIcon> > &itemsState) const
{
    comboBox->clear();
    QListIterator<QPair<QString, QIcon> > it(itemsState);
    while (it.hasNext()) {
        const QPair<QString, QIcon> pair = it.next();
        comboBox->addItem(pair.second, pair.first);
        comboBox->setItemData(comboBox->count() - 1, pair.second);
    }
}

// ---- AddActionCommand ----

AddActionCommand::AddActionCommand(QDesignerFormWindowInterface *formWindow) :
    QDesignerFormWindowCommand(QApplication::translate("Command", "Add action"), formWindow)
{
    m_action = 0;
}

void AddActionCommand::init(QAction *action)
{
    Q_ASSERT(m_action == 0);
    m_action = action;
}

void AddActionCommand::redo()
{
    core()->actionEditor()->setFormWindow(formWindow());
    core()->actionEditor()->manageAction(m_action);
}

void AddActionCommand::undo()
{
    core()->actionEditor()->setFormWindow(formWindow());
    core()->actionEditor()->unmanageAction(m_action);
}

// ---- RemoveActionCommand ----

RemoveActionCommand::RemoveActionCommand(QDesignerFormWindowInterface *formWindow) :
    QDesignerFormWindowCommand(QApplication::translate("Command", "Remove action"), formWindow),
    m_action(0)
{
}

static RemoveActionCommand::ActionData findActionIn(QAction *action)
{
    RemoveActionCommand::ActionData result;
    // We only want menus and toolbars, no toolbuttons.
    foreach (QWidget *widget, action->associatedWidgets())
        if (qobject_cast<const QMenu *>(widget) || qobject_cast<const QToolBar *>(widget)) {
            const QList<QAction*> actionList = widget->actions();
            const int size = actionList.size();
            for (int i = 0; i < size; ++i) {
                if (actionList.at(i) == action) {
                    QAction *before = 0;
                    if (i + 1 < size)
                        before = actionList.at(i + 1);
                    result.append(RemoveActionCommand::ActionDataItem(before, widget));
                    break;
                }
            }
        }
    return result;
}

void RemoveActionCommand::init(QAction *action)
{
    Q_ASSERT(m_action == 0);
    m_action = action;

    m_actionData = findActionIn(action);
}

void RemoveActionCommand::redo()
{
    foreach (const ActionDataItem &item, m_actionData) {
        item.widget->removeAction(m_action);
    }
    core()->actionEditor()->setFormWindow(formWindow());
    core()->actionEditor()->unmanageAction(m_action);
    if (!m_actionData.empty())
        core()->objectInspector()->setFormWindow(formWindow());
}

void RemoveActionCommand::undo()
{
    core()->actionEditor()->setFormWindow(formWindow());
    core()->actionEditor()->manageAction(m_action);
    foreach (const ActionDataItem &item, m_actionData) {
        item.widget->insertAction(item.before, m_action);
    }
    if (!m_actionData.empty())
        core()->objectInspector()->setFormWindow(formWindow());
}

// ---- ActionInsertionCommand ----

ActionInsertionCommand::ActionInsertionCommand(const QString &text, QDesignerFormWindowInterface *formWindow) :
    QDesignerFormWindowCommand(text, formWindow),
    m_parentWidget(0),
    m_action(0),
    m_beforeAction(0),
    m_update(false)
{
}

void ActionInsertionCommand::init(QWidget *parentWidget, QAction *action, QAction *beforeAction, bool update)
{
    Q_ASSERT(m_parentWidget == 0);
    Q_ASSERT(m_action == 0);

    m_parentWidget = parentWidget;
    m_action = action;
    m_beforeAction = beforeAction;
    m_update = update;
}

void ActionInsertionCommand::insertAction()
{
    Q_ASSERT(m_action != 0);
    Q_ASSERT(m_parentWidget != 0);

    m_parentWidget->insertAction(m_beforeAction, m_action);

    if (m_update) {
        cheapUpdate();
        if (QMenu *menu = m_action->menu())
            selectUnmanagedObject(menu);
        else
            selectUnmanagedObject(m_action);
    }
}
void ActionInsertionCommand::removeAction()
{
    Q_ASSERT(m_action != 0);
    Q_ASSERT(m_parentWidget != 0);

    if (QDesignerMenu *menu = qobject_cast<QDesignerMenu*>(m