314 lines
11 KiB
C++
314 lines
11 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Designer of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists for the convenience
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// of Qt Designer. This header
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// file may change from version to version without notice, or even be removed.
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//
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// We mean it.
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//
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#ifndef QDESIGNER_PROPERTYCOMMAND_H
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#define QDESIGNER_PROPERTYCOMMAND_H
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#include "qdesigner_formwindowcommand_p.h"
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#include <QtCore/QVariant>
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#include <QtCore/QList>
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#include <QtCore/QPair>
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#include <QtCore/QSharedPointer>
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QT_BEGIN_NAMESPACE
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class QDesignerFormWindowInterface;
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class QDesignerPropertySheetExtension;
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namespace qdesigner_internal {
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class QDesignerIntegration;
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enum SpecialProperty {
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SP_None, SP_ObjectName, SP_LayoutName, SP_SpacerName,SP_WindowTitle,
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SP_MinimumSize, SP_MaximumSize, SP_Geometry, SP_Icon, SP_CurrentTabName, SP_CurrentItemName, SP_CurrentPageName,
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SP_AutoDefault, SP_Alignment, SP_Shortcut, SP_Orientation
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};
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//Determine special property
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enum SpecialProperty getSpecialProperty(const QString& propertyName);
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// A helper class for applying properties to objects.
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// Can be used for Set commands (setValue(), restoreOldValue()) or
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// Reset Commands restoreDefaultValue(), restoreOldValue()).
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//
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class QDESIGNER_SHARED_EXPORT PropertyHelper {
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Q_DISABLE_COPY(PropertyHelper)
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public:
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// A pair of Value and changed flag
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typedef QPair<QVariant, bool> Value;
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enum ObjectType {OT_Object, OT_FreeAction, OT_AssociatedAction, OT_Widget};
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PropertyHelper(QObject* object,
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SpecialProperty specialProperty,
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QDesignerPropertySheetExtension *sheet,
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int index);
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virtual ~PropertyHelper() {}
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QObject *object() const { return m_object; }
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SpecialProperty specialProperty() const { return m_specialProperty; }
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// set a new value. Can be overwritten to perform a transformation (see
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// handling of Arrow key move in FormWindow class).
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virtual Value setValue(QDesignerFormWindowInterface *fw, const QVariant &value, bool changed, unsigned subPropertyMask);
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// restore old value
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Value restoreOldValue(QDesignerFormWindowInterface *fw);
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// set default value
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Value restoreDefaultValue(QDesignerFormWindowInterface *fw);
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inline QVariant oldValue() const
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{ return m_oldValue.first; }
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inline void setOldValue(const QVariant &oldValue)
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{ m_oldValue.first = oldValue; }
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// required updates for this property (bit mask)
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enum UpdateMask { UpdatePropertyEditor=1, UpdateObjectInspector=2 };
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unsigned updateMask() const;
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// can be merged into one command (that is, object and name match)
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bool canMerge(const PropertyHelper &other) const;
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QDesignerIntegration *integration(QDesignerFormWindowInterface *fw) const;
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static void triggerActionChanged(QAction *a);
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private:
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// Apply the value and update. Returns corrected value
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Value applyValue(QDesignerFormWindowInterface *fw, const QVariant &oldValue, Value newValue);
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static void checkApplyWidgetValue(QDesignerFormWindowInterface *fw, QWidget* w,
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SpecialProperty specialProperty, QVariant &v);
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void updateObject(QDesignerFormWindowInterface *fw, const QVariant &oldValue, const QVariant &newValue);
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QVariant findDefaultValue(QDesignerFormWindowInterface *fw) const;
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void ensureUniqueObjectName(QDesignerFormWindowInterface *fw, QObject *object) const;
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SpecialProperty m_specialProperty;
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QPointer<QObject> m_object;
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ObjectType m_objectType;
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QPointer<QWidget> m_parentWidget;
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QDesignerPropertySheetExtension *m_propertySheet;
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int m_index;
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Value m_oldValue;
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};
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// Base class for commands that can be applied to several widgets
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class QDESIGNER_SHARED_EXPORT PropertyListCommand : public QDesignerFormWindowCommand {
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public:
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typedef QList<QObject *> ObjectList;
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explicit PropertyListCommand(QDesignerFormWindowInterface *formWindow, QUndoCommand *parent = 0);
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QObject* object(int index = 0) const;
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QVariant oldValue(int index = 0) const;
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void setOldValue(const QVariant &oldValue, int index = 0);
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// Calls restoreDefaultValue() and update()
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virtual void undo();
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protected:
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typedef QSharedPointer<PropertyHelper> PropertyHelperPtr;
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typedef QList<PropertyHelperPtr> PropertyHelperList;
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// add an object
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bool add(QObject *object, const QString &propertyName);
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// Init from a list and make sure referenceObject is added first to obtain the right property group
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bool initList(const ObjectList &list, const QString &apropertyName, QObject *referenceObject = 0);
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// set a new value, return update mask
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unsigned setValue(QVariant value, bool changed, unsigned subPropertyMask);
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// restore old value, return update mask
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unsigned restoreOldValue();
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// set default value, return update mask
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unsigned restoreDefaultValue();
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// update designer
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void update(unsigned updateMask);
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// check if lists are aequivalent for command merging (same widgets and props)
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bool canMergeLists(const PropertyHelperList& other) const;
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PropertyHelperList& propertyHelperList() { return m_propertyHelperList; }
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const PropertyHelperList& propertyHelperList() const { return m_propertyHelperList; }
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const QString propertyName() const;
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SpecialProperty specialProperty() const;
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// Helper struct describing a property used for checking whether
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// properties of different widgets are equivalent
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struct PropertyDescription {
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public:
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PropertyDescription();
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PropertyDescription(const QString &propertyName, QDesignerPropertySheetExtension *propertySheet, int index);
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bool equals(const PropertyDescription &p) const;
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void debug() const;
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QString m_propertyName;
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QString m_propertyGroup;
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QVariant::Type m_propertyType;
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SpecialProperty m_specialProperty;
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};
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const PropertyDescription &propertyDescription() const { return m_propertyDescription; }
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protected:
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virtual PropertyHelper *createPropertyHelper(QObject *o, SpecialProperty sp,
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QDesignerPropertySheetExtension *sheet, int sheetIndex) const;
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private:
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PropertyDescription m_propertyDescription;
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PropertyHelperList m_propertyHelperList;
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};
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class QDESIGNER_SHARED_EXPORT SetPropertyCommand: public PropertyListCommand
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{
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public:
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typedef QList<QObject *> ObjectList;
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explicit SetPropertyCommand(QDesignerFormWindowInterface *formWindow, QUndoCommand *parent = 0);
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bool init(QObject *object, const QString &propertyName, const QVariant &newValue);
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bool init(const ObjectList &list, const QString &propertyName, const QVariant &newValue,
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QObject *referenceObject = 0, bool enableSubPropertyHandling = true);
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inline QVariant newValue() const
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{ return m_newValue; }
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inline void setNewValue(const QVariant &newValue)
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{ m_newValue = newValue; }
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int id() const;
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bool mergeWith(const QUndoCommand *other);
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virtual void redo();
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protected:
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virtual QVariant mergeValue(const QVariant &newValue);
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private:
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unsigned subPropertyMask(const QVariant &newValue, QObject *referenceObject);
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void setDescription();
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QVariant m_newValue;
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unsigned m_subPropertyMask;
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};
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class QDESIGNER_SHARED_EXPORT ResetPropertyCommand: public PropertyListCommand
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{
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public:
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typedef QList<QObject *> ObjectList;
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explicit ResetPropertyCommand(QDesignerFormWindowInterface *formWindow);
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bool init(QObject *object, const QString &propertyName);
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bool init(const ObjectList &list, const QString &propertyName, QObject *referenceObject = 0);
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virtual void redo();
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protected:
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virtual bool mergeWith(const QUndoCommand *) { return false; }
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private:
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void setDescription();
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QString m_propertyName;
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};
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class QDESIGNER_SHARED_EXPORT AddDynamicPropertyCommand: public QDesignerFormWindowCommand
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{
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public:
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explicit AddDynamicPropertyCommand(QDesignerFormWindowInterface *formWindow);
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bool init(const QList<QObject *> &selection, QObject *current, const QString &propertyName, const QVariant &value);
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virtual void redo();
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virtual void undo();
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private:
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void setDescription();
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QString m_propertyName;
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QList<QObject *> m_selection;
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QVariant m_value;
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};
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class QDESIGNER_SHARED_EXPORT RemoveDynamicPropertyCommand: public QDesignerFormWindowCommand
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{
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public:
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explicit RemoveDynamicPropertyCommand(QDesignerFormWindowInterface *formWindow);
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bool init(const QList<QObject *> &selection, QObject *current, const QString &propertyName);
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virtual void redo();
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virtual void undo();
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private:
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void setDescription();
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QString m_propertyName;
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QMap<QObject *, QPair<QVariant, bool> > m_objectToValueAndChanged;
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};
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} // namespace qdesigner_internal
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QT_END_NAMESPACE
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#endif // QDESIGNER_PROPERTYCOMMAND_H
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