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Diffstat (limited to 'src/gui/kernel/qwidgetaction.cpp')
| -rw-r--r-- | src/gui/kernel/qwidgetaction.cpp | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/src/gui/kernel/qwidgetaction.cpp b/src/gui/kernel/qwidgetaction.cpp deleted file mode 100644 index 29586da34b..0000000000 --- a/src/gui/kernel/qwidgetaction.cpp +++ /dev/null @@ -1,287 +0,0 @@ -/**************************************************************************** -** -** 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 QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qwidgetaction.h" -#include "qdebug.h" - -#ifndef QT_NO_ACTION -#include "qwidgetaction_p.h" - -QT_BEGIN_NAMESPACE - -/*! - \class QWidgetAction - \since 4.2 - \brief The QWidgetAction class extends QAction by an interface - for inserting custom widgets into action based containers, such - as toolbars. - - \ingroup mainwindow-classes - - Most actions in an application are represented as items in menus or - buttons in toolbars. However sometimes more complex widgets are - necessary. For example a zoom action in a word processor may be - realized using a QComboBox in a QToolBar, presenting a range - of different zoom levels. QToolBar provides QToolBar::insertWidget() - as convenience function for inserting a single widget. - However if you want to implement an action that uses custom - widgets for visualization in multiple containers then you have to - subclass QWidgetAction. - - If a QWidgetAction is added for example to a QToolBar then - QWidgetAction::createWidget() is called. Reimplementations of that - function should create a new custom widget with the specified parent. - - If the action is removed from a container widget then - QWidgetAction::deleteWidget() is called with the previously created custom - widget as argument. The default implementation hides the widget and deletes - it using QObject::deleteLater(). - - If you have only one single custom widget then you can set it as default - widget using setDefaultWidget(). That widget will then be used if the - action is added to a QToolBar, or in general to an action container that - supports QWidgetAction. If a QWidgetAction with only a default widget is - added to two toolbars at the same time then the default widget is shown - only in the first toolbar the action was added to. QWidgetAction takes - over ownership of the default widget. - - Note that it is up to the widget to activate the action, for example by - reimplementing mouse event handlers and calling QAction::trigger(). - - \bold {Mac OS X}: If you add a widget to a menu in the application's menu - bar on Mac OS X, the widget will be added and it will function but with some - limitations: - \list 1 - \o The widget is reparented away from the QMenu to the native menu - view. If you show the menu in some other place (e.g. as a popup menu), - the widget will not be there. - \o Focus/Keyboard handling of the widget is not possible. - \o Due to Apple's design, mouse tracking on the widget currently does - not work. - \o Connecting the triggered() signal to a slot that opens a modal - dialog will cause a crash in Mac OS X 10.4 (known bug acknowledged - by Apple), a workaround is to use a QueuedConnection instead of a - DirectConnection. - \endlist - - \sa QAction, QActionGroup, QWidget -*/ - -/*! - Constructs an action with \a parent. -*/ -QWidgetAction::QWidgetAction(QObject *parent) - : QAction(*(new QWidgetActionPrivate), parent) -{ -} - -/*! - Destroys the object and frees allocated resources. -*/ -QWidgetAction::~QWidgetAction() -{ - Q_D(QWidgetAction); - for (int i = 0; i < d->createdWidgets.count(); ++i) - disconnect(d->createdWidgets.at(i), SIGNAL(destroyed(QObject*)), - this, SLOT(_q_widgetDestroyed(QObject*))); - QList<QWidget *> widgetsToDelete = d->createdWidgets; - d->createdWidgets.clear(); - qDeleteAll(widgetsToDelete); - delete d->defaultWidget; -} - -/*! - Sets \a widget to be the default widget. The ownership is - transferred to QWidgetAction. Unless createWidget() is - reimplemented by a subclass to return a new widget the default - widget is used when a container widget requests a widget through - requestWidget(). -*/ -void QWidgetAction::setDefaultWidget(QWidget *widget) -{ - Q_D(QWidgetAction); - if (widget == d->defaultWidget || d->defaultWidgetInUse) - return; - delete d->defaultWidget; - d->defaultWidget = widget; - if (!widget) - return; - - setVisible(!(widget->isHidden() && widget->testAttribute(Qt::WA_WState_ExplicitShowHide))); - d->defaultWidget->hide(); - d->defaultWidget->setParent(0); - d->defaultWidgetInUse = false; - if (!isEnabled()) - d->defaultWidget->setEnabled(false); -} - -/*! - Returns the default widget. -*/ -QWidget *QWidgetAction::defaultWidget() const -{ - Q_D(const QWidgetAction); - return d->defaultWidget; -} - -/*! - Returns a widget that represents the action, with the given \a - parent. - - Container widgets that support actions can call this function to - request a widget as visual representation of the action. - - \sa releaseWidget(), createWidget(), defaultWidget() -*/ -QWidget *QWidgetAction::requestWidget(QWidget *parent) -{ - Q_D(QWidgetAction); - - QWidget *w = createWidget(parent); - if (!w) { - if (d->defaultWidgetInUse || !d->defaultWidget) - return 0; - d->defaultWidget->setParent(parent); - d->defaultWidgetInUse = true; - return d->defaultWidget; - } - - connect(w, SIGNAL(destroyed(QObject*)), - this, SLOT(_q_widgetDestroyed(QObject*))); - d->createdWidgets.append(w); - return w; -} - -/*! - Releases the specified \a widget. - - Container widgets that support actions call this function when a widget - action is removed. - - \sa requestWidget(), deleteWidget(), defaultWidget() -*/ -void QWidgetAction::releaseWidget(QWidget *widget) -{ - Q_D(QWidgetAction); - - if (widget == d->defaultWidget) { - d->defaultWidget->hide(); - d->defaultWidget->setParent(0); - d->defaultWidgetInUse = false; - return; - } - - if (!d->createdWidgets.contains(widget)) - return; - - disconnect(widget, SIGNAL(destroyed(QObject*)), - this, SLOT(_q_widgetDestroyed(QObject*))); - d->createdWidgets.removeAll(widget); - deleteWidget(widget); -} - -/*! - \reimp -*/ -bool QWidgetAction::event(QEvent *event) -{ - Q_D(QWidgetAction); - if (event->type() == QEvent::ActionChanged) { - if (d->defaultWidget) - d->defaultWidget->setEnabled(isEnabled()); - for (int i = 0; i < d->createdWidgets.count(); ++i) - d->createdWidgets.at(i)->setEnabled(isEnabled()); - } - return QAction::event(event); -} - -/*! - \reimp - */ -bool QWidgetAction::eventFilter(QObject *obj, QEvent *event) -{ - return QAction::eventFilter(obj,event); -} - -/*! - This function is called whenever the action is added to a container widget - that supports custom widgets. If you don't want a custom widget to be - used as representation of the action in the specified \a parent widget then - 0 should be returned. - - \sa deleteWidget() -*/ -QWidget *QWidgetAction::createWidget(QWidget *parent) -{ - Q_UNUSED(parent) - return 0; -} - -/*! - This function is called whenever the action is removed from a - container widget that displays the action using a custom \a - widget previously created using createWidget(). The default - implementation hides the \a widget and schedules it for deletion - using QObject::deleteLater(). - - \sa createWidget() -*/ -void QWidgetAction::deleteWidget(QWidget *widget) -{ - widget->hide(); - widget->deleteLater(); -} - -/*! - Returns the list of widgets that have been using createWidget() and - are currently in use by widgets the action has been added to. -*/ -QList<QWidget *> QWidgetAction::createdWidgets() const -{ - Q_D(const QWidgetAction); - return d->createdWidgets; -} - -QT_END_NAMESPACE - -#include "moc_qwidgetaction.cpp" - -#endif // QT_NO_ACTION |