abstractformwindow.cpp

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#include "abstractformwindow.h"

#include <QtGui/QTabBar>
#include <QtGui/QSizeGrip>
#include <QtGui/QAbstractButton>
#include <QtGui/QToolBox>
#include <QtGui/QMenuBar>
#include <QtGui/QMainWindow>
#include <QtGui/QDockWidget>
#include <QtGui/QToolBar>

#include <QtCore/qdebug.h>

/*!
    \class QDesignerFormWindowInterface

    \brief The QDesignerFormWindowInterface class allows you to query
    and manipulate form windows appearing in Qt Designer's workspace.

    \inmodule QtDesigner

    QDesignerFormWindowInterface provides information about
    the associated form window as well as allowing its properties to be
    altered. The interface is not intended to be instantiated
    directly, but to provide access to \QD's current form windows
    controlled by \QD's \l {QDesignerFormWindowManagerInterface}{form
    window manager}.

    If you are looking for the form window containing a specific
    widget, you can use the static
    QDesignerFormWindowInterface::findFormWindow() function:

    \code
    QDesignerFormWindowInterface *formWindow;
    formWindow = QDesignerFormWindowInterface::findFormWindow(myWidget);
    \endcode

    But in addition, you can access any of the current form windows
    through \QD's form window manager: Use the
    QDesignerFormEditorInterface::formWindowManager() function to
    retrieve an interface to the manager. Once you have this
    interface, you have access to all of \QD's current form windows
    through the QDesignerFormWindowManagerInterface::formWindow()
    function. For example:

    \code
    QList<QDesignerFormWindowInterface *> forms;
    QDesignerFormWindowInterface *formWindow;

    QDesignerFormWindowManagerInterface *manager = formEditor->formWindowManager();

    for (int i = 0; i < manager->formWindowCount(); i++) {
        formWindow = manager->formWindow(i);
        forms.append(formWindow);
    }
    \endcode

    The pointer to \QD's current QDesignerFormEditorInterface object
    (\c formEditor in the example above) is provided by the
    QDesignerCustomWidgetInterface::initialize() function's
    parameter. When implementing a custom widget plugin, you must
    subclass the QDesignerCustomWidgetInterface class to expose your
    plugin to \QD.

    Once you have the form window, you can query its properties. For
    example, a plain custom widget plugin is managed by \QD only at
    its top level, i.e. none of its child widgets can be resized in
    \QD's workspace. But QDesignerFormWindowInterface provides you
    with functions that enables you to control whether a widget should
    be managed by \QD, or not:

    \code
        if (formWindow->isManaged(myWidget))
            formWindow->manageWidget(myWidget->childWidget);
    \endcode

    The complete list of functions concerning widget management is:
    isManaged(), manageWidget() and unmanageWidget(). There is also
    several associated signals: widgetManaged(), widgetRemoved(),
    aboutToUnmanageWidget() and widgetUnmanaged().

    In addition to controlling the management of widgets, you can
    control the current selection in the form window using the
    selectWidget(), clearSelection() and emitSelectionChanged()
    functions, and the selectionChanged() signal.

    You can also retrieve information about where the form is stored
    using absoluteDir(), its include files using includeHints(), and
    its layout and pixmap functions using layoutDefault(),
    layoutFunction() and pixmapFunction(). You can find out whether
    the form window has been modified (but not saved) or not, using
    the isDirty() function. You can retrieve its author(), its
    contents(), its fileName(), associated comment() and
    exportMacro(), its mainContainer(), its features(), its grid() and
    its resourceFiles().

    The interface provides you with functions and slots allowing you
    to alter most of this information as well. The exception is the
    directory storing the form window. Finally, there is several
    signals associated with changes to the information mentioned above
    and to the form window in general.

    \sa QDesignerFormWindowCursorInterface,
    QDesignerFormEditorInterface, QDesignerFormWindowManagerInterface
*/

/*!
    \enum QDesignerFormWindowInterface::FeatureFlag

    This enum describes the features that are available and can be
    controlled by the form window interface. These values are used
    when querying the form window to determine which features it
    supports:

    \value EditFeature      Form editing
    \value GridFeature      Grid display and snap-to-grid facilities for editing
    \value TabOrderFeature  Tab order management
    \value DefaultFeature   Support for default features (form editing and grid)

    \sa hasFeature(), features()
*/

/*!
    Constructs a form window interface with the given \a parent and
    the specified window \a flags.
*/
QDesignerFormWindowInterface::QDesignerFormWindowInterface(QWidget *parent, Qt::WindowFlags flags)
    : QWidget(parent, flags)
{
}

/*!
    Destroys the form window interface.
*/
QDesignerFormWindowInterface::~QDesignerFormWindowInterface()
{
}

/*!
    Returns a pointer to \QD's current QDesignerFormEditorInterface
    object.
*/
QDesignerFormEditorInterface *QDesignerFormWindowInterface::core() const
{
    return 0;
}

/*!
    \fn QDesignerFormWindowInterface *QDesignerFormWindowInterface::findFormWindow(QWidget *widget)

    Returns the form window interface for the given \a widget.
*/

static inline bool stopFindAtTopLevel(const QWidget *w)
{
    // Do we need to go beyond top levels when looking for the form window?
    // 1) A dialog has a window attribute at the moment it is created
    //    before it is properly embedded into a form window. The property
    //    sheet queries the layout attributes precisely at this moment.
    // 2) In the case of floating toolbars, we also need to go beyond the top level window.
    if (w->inherits("QDesignerDialog"))
        return false;
    if (const QDockWidget *dw = qobject_cast<const QDockWidget *>(w))
        if (dw->isFloating())
            return false;
    if (const QToolBar *tb = qobject_cast<const QToolBar *>(w))
        if (tb->isFloating())
            return false;
    return true;
}

QDesignerFormWindowInterface *QDesignerFormWindowInterface::findFormWindow(QWidget *w)
{
    while (w != 0) {
        if (QDesignerFormWindowInterface *fw = qobject_cast<QDesignerFormWindowInterface*>(w)) {
            return fw;
        } else {
            if (w->isWindow() && stopFindAtTopLevel(w))
                break;
        }

        w = w->parentWidget();
    }

    return 0;
}

/*!
    \fn virtual QString QDesignerFormWindowInterface::fileName() const

    Returns the file name of the .ui file that describes the form
    currently being shown.

    \sa setFileName()
*/

/*!
    \fn virtual QDir QDesignerFormWindowInterface::absoluteDir() const

    Returns the absolute location of the directory containing the form
    shown in the form window.
*/

/*!
    \fn virtual QString QDesignerFormWindowInterface::contents() const

    Returns details of the contents of the form currently being
    displayed in the window.
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setContents(QIODevice *device)

    Sets the form's contents using data obtained from the given \a device.

    Data can be read from QFile objects or any other subclass of QIODevice.
*/

/*!
    \fn virtual Feature QDesignerFormWindowInterface::features() const

    Returns a combination of the features provided by the form window
    associated with the interface. The value returned can be tested
    against the \l Feature enum values to determine which features are
    supported by the window.

    \sa setFeatures(), hasFeature()
*/

/*!
    \fn virtual bool QDesignerFormWindowInterface::hasFeature(Feature feature) const

    Returns true if the form window offers the specified \a feature;
    otherwise returns false.

    \sa features()
*/

/*!
    \fn virtual QString QDesignerFormWindowInterface::author() const

    Returns details of the author or creator of the form currently
    being displayed in the window.
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setAuthor(const QString &author)

    Sets the details for the author or creator of the form to the \a
    author specified.
*/

/*!
    \fn virtual QString QDesignerFormWindowInterface::comment() const

    Returns comments about the form currently being displayed in the window.
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setComment(const QString &comment)

    Sets the information about the form to the \a comment
    specified. This information should be a human-readable comment
    about the form.
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::layoutDefault(int *margin, int *spacing)

    Fills in the default margin and spacing for the form's default
    layout in the \a margin and \a spacing variables specified.
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setLayoutDefault(int margin, int spacing)

    Sets the default \a margin and \a spacing for the form's layout.

    \sa layoutDefault()
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::layoutFunction(QString *margin, QString *spacing)

    Fills in the current margin and spacing for the form's layout in
    the \a margin and \a spacing variables specified.
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setLayoutFunction(const QString &margin, const QString &spacing)

    Sets the \a margin and \a spacing for the form's layout.

    The default layout properties will be replaced by the
    corresponding layout functions when \c uic generates code for the
    form, that is, if the functions are specified. This is useful when
    different environments requires different layouts for the same
    form.

    \sa layoutFunction()
*/

/*!
    \fn virtual QString QDesignerFormWindowInterface::pixmapFunction() const

    Returns the name of the function used to load pixmaps into the
    form window.

    \sa setPixmapFunction()
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setPixmapFunction(const QString &pixmapFunction)

    Sets the function used to load pixmaps into the form window
    to the given \a pixmapFunction.

    \sa pixmapFunction()
*/

/*!
    \fn virtual QString QDesignerFormWindowInterface::exportMacro() const

    Returns the export macro associated with the form currently being
    displayed in the window.  The export macro is used when the form
    is compiled to create a widget plugin.

    \sa {Creating Custom Widgets for Qt Designer}
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setExportMacro(const QString &exportMacro)

    Sets the form window's export macro to \a exportMacro. The export
    macro is used when building a widget plugin to export the form's
    interface to other components.
*/

/*!
    \fn virtual QStringList QDesignerFormWindowInterface::includeHints() const

    Returns a list of the header files that will be included in the
    form window's associated \c .ui file.

    Header files may be local, i.e. relative to the project's
    directory,\c "mywidget.h", or global, i.e. part of Qt or the
    compilers standard libraries:\c <QtGui/QWidget>.

    \sa setIncludeHints()
*/

/*!
    \fn virtual void QDesignerFormWindowInterface::setIncludeHints(const QStringList &includeHints)