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Diffstat (limited to 'src/designer/src/lib/uilib/container.qdoc')
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diff --git a/src/designer/src/lib/uilib/container.qdoc b/src/designer/src/lib/uilib/container.qdoc new file mode 100644 index 000000000..8f7a07d30 --- /dev/null +++ b/src/designer/src/lib/uilib/container.qdoc @@ -0,0 +1,199 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:FDL$ +** GNU Free Documentation License +** Alternatively, this file may be used under the terms of the GNU Free +** Documentation License version 1.3 as published by the Free Software +** Foundation and appearing in the file included in the packaging of +** this file. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms +** and conditions contained in a signed written agreement between you +** and Nokia. +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/*! + \class QDesignerContainerExtension + \brief The QDesignerContainerExtension class allows you to add pages to + a custom multi-page container in Qt Designer's workspace. + \inmodule QtDesigner + + QDesignerContainerExtension provide an interface for creating + custom container extensions. A container extension consists of a + collection of functions that \QD needs to manage a multi-page + container plugin, and a list of the container's pages. + + \image containerextension-example.png + + \warning This is \e not an extension for container plugins in + general, only custom \e multi-page containers. + + To create a container extension, your extension class must inherit + from both QObject and QDesignerContainerExtension. For example: + + \snippet doc/src/snippets/code/doc_src_qtdesigner.cpp 6 + + Since we are implementing an interface, we must ensure that it's + made known to the meta object system using the Q_INTERFACES() + macro. This enables \QD to use the qobject_cast() function to + query for supported interfaces using nothing but a QObject + pointer. + + You must reimplement several functions to enable \QD to manage a + custom multi-page container widget: \QD uses count() to keep track + of the number pages in your container, widget() to return the page + at a given index in the list of the container's pages, and + currentIndex() to return the list index of the selected page. \QD + uses the addWidget() function to add a given page to the + container, expecting it to be appended to the list of pages, while + it expects the insertWidget() function to add a given page to the + container by inserting it at a given index. + + In \QD the extensions are not created until they are + required. For that reason you must also create a + QExtensionFactory, i.e a class that is able to make an instance of + your extension, and register it using \QD's \l + {QExtensionManager}{extension manager}. + + When a container extension is required, \QD's \l + {QExtensionManager}{extension manager} will run through all its + registered factories calling QExtensionFactory::createExtension() + for each until the first one that is able to create a container + extension, is found. This factory will then create the extension + for the plugin. + + There are four available types of extensions in \QD: + QDesignerContainerExtension , QDesignerMemberSheetExtension, + QDesignerPropertySheetExtension and QDesignerTaskMenuExtension. + \QD's behavior is the same whether the requested extension is + associated with a multi page container, a member sheet, a property + sheet or a task menu. + + The QExtensionFactory class provides a standard extension factory, + and can also be used as an interface for custom extension + factories. You can either create a new QExtensionFactory and + reimplement the QExtensionFactory::createExtension() function. For + example: + + \snippet doc/src/snippets/code/doc_src_qtdesigner.cpp 7 + + Or you can use an existing factory, expanding the + QExtensionFactory::createExtension() function to make the factory + able to create a container extension as well. For example: + + \snippet doc/src/snippets/code/doc_src_qtdesigner.cpp 8 + + For a complete example using the QDesignerContainerExtension + class, see the \l {designer/containerextension}{Container + Extension example}. The example shows how to create a custom + multi-page plugin for \QD. + + \sa QExtensionFactory, QExtensionManager, {Creating Custom Widget + Extensions} +*/ + +/*! + \fn QDesignerContainerExtension::~QDesignerContainerExtension() + + Destroys the extension. +*/ + +/*! + \fn int QDesignerContainerExtension::count() const + + Returns the number of pages in the container. +*/ + +/*! + \fn QWidget *QDesignerContainerExtension::widget(int index) const + + Returns the page at the given \a index in the extension's list of + pages. + + \sa addWidget(), insertWidget() +*/ + +/*! + \fn int QDesignerContainerExtension::currentIndex() const + + Returns the index of the currently selected page in the + container. + + \sa setCurrentIndex() +*/ + +/*! + \fn void QDesignerContainerExtension::setCurrentIndex(int index) + + Sets the currently selected page in the container to be the + page at the given \a index in the extension's list of pages. + + \sa currentIndex() +*/ + +/*! + \fn void QDesignerContainerExtension::addWidget(QWidget *page) + + Adds the given \a page to the container by appending it to the + extension's list of pages. + + \sa insertWidget(), remove(), widget() +*/ + +/*! + \fn void QDesignerContainerExtension::insertWidget(int index, QWidget *page) + + Adds the given \a page to the container by inserting it at the + given \a index in the extension's list of pages. + + \sa addWidget(), remove(), widget() +*/ + +/*! + \fn void QDesignerContainerExtension::remove(int index) + + Removes the page at the given \a index from the extension's list + of pages. + + \sa addWidget(), insertWidget() +*/ + +/*! + \fn bool QDesignerContainerExtension::canAddWidget() const + + Returns whether a widget can be added. This determines whether + the context menu options to add or insert pages are enabled. + + This should return false for containers that have a single, fixed + page, for example QScrollArea or QDockWidget. + + \since 5.0 + \sa addWidget(), canRemove() +*/ + +/*! + \fn bool QDesignerContainerExtension::canRemove(int index) const + + Returns whether the widget at the given \a index can be removed. + This determines whether the context menu option to remove the current + page is enabled. + + This should return false for containers that have a single, fixed + page, for example QScrollArea or QDockWidget. + + \since 5.0 + \sa remove(), canAddWidget() +*/ |