Convert "extension" dialog example into snippets

Pick-to: 6.5
Task-number: QTBUG-108751
Change-Id: I8ca4e058b832674dc0c8b84024cb70a667ee8db4
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>

8 files changed, 0 insertions, 303 deletions

diff --git a/examples/widgets/dialogs/CMakeLists.txt b/examples/widgets/dialogs/CMakeLists.txt
index a4031a6807..c40dc94ccb 100644
--- a/examples/widgets/dialogs/CMakeLists.txt
+++ b/examples/widgets/dialogs/CMakeLists.txt
@@ -5,7 +5,6 @@ if(QT_FEATURE_wizard)
     qt_internal_add_example(classwizard)
     qt_internal_add_example(trivialwizard)
 endif()
-qt_internal_add_example(extension)
 qt_internal_add_example(standarddialogs)
 qt_internal_add_example(tabdialog)
 if(QT_FEATURE_wizard AND TARGET Qt6::PrintSupport)
diff --git a/examples/widgets/dialogs/dialogs.pro b/examples/widgets/dialogs/dialogs.pro
index 1983c854a1..14dbec67b6 100644
--- a/examples/widgets/dialogs/dialogs.pro
+++ b/examples/widgets/dialogs/dialogs.pro
@@ -2,7 +2,6 @@ QT_FOR_CONFIG += widgets
 
 TEMPLATE      = subdirs
 SUBDIRS       = classwizard \
-                extension \
                 licensewizard \
                 standarddialogs \
                 tabdialog \
diff --git a/examples/widgets/dialogs/extension/CMakeLists.txt b/examples/widgets/dialogs/extension/CMakeLists.txt
deleted file mode 100644
index 8dd008cc20..0000000000
--- a/examples/widgets/dialogs/extension/CMakeLists.txt
+++ /dev/null
@@ -1,37 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(extension LANGUAGES CXX)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
-    set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/dialogs/extension")
-
-find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
-
-qt_standard_project_setup()
-
-qt_add_executable(extension
-    finddialog.cpp finddialog.h
-    main.cpp
-)
-
-set_target_properties(extension PROPERTIES
-    WIN32_EXECUTABLE TRUE
-    MACOSX_BUNDLE TRUE
-)
-
-target_link_libraries(extension PRIVATE
-    Qt6::Core
-    Qt6::Gui
-    Qt6::Widgets
-)
-
-install(TARGETS extension
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)
diff --git a/examples/widgets/dialogs/extension/extension.pro b/examples/widgets/dialogs/extension/extension.pro
deleted file mode 100644
index f51052cd56..0000000000
--- a/examples/widgets/dialogs/extension/extension.pro
+++ /dev/null
@@ -1,9 +0,0 @@
-QT += widgets
-
-HEADERS       = finddialog.h
-SOURCES       = finddialog.cpp \
-                main.cpp
-
-# install
-target.path = $$[QT_INSTALL_EXAMPLES]/widgets/dialogs/extension
-INSTALLS += target
diff --git a/examples/widgets/dialogs/extension/finddialog.cpp b/examples/widgets/dialogs/extension/finddialog.cpp
deleted file mode 100644
index f6b5943467..0000000000
--- a/examples/widgets/dialogs/extension/finddialog.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QtWidgets>
-
-#include "finddialog.h"
-
-//! [0]
-FindDialog::FindDialog(QWidget *parent)
-    : QDialog(parent)
-{
-    label = new QLabel(tr("Find &what:"));
-    lineEdit = new QLineEdit;
-    label->setBuddy(lineEdit);
-
-    caseCheckBox = new QCheckBox(tr("Match &case"));
-    fromStartCheckBox = new QCheckBox(tr("Search from &start"));
-    fromStartCheckBox->setChecked(true);
-
-//! [1]
-    findButton = new QPushButton(tr("&Find"));
-    findButton->setDefault(true);
-
-    moreButton = new QPushButton(tr("&More"));
-    moreButton->setCheckable(true);
-//! [0]
-    moreButton->setAutoDefault(false);
-
-//! [1]
-
-//! [2]
-    extension = new QWidget;
-
-    wholeWordsCheckBox = new QCheckBox(tr("&Whole words"));
-    backwardCheckBox = new QCheckBox(tr("Search &backward"));
-    searchSelectionCheckBox = new QCheckBox(tr("Search se&lection"));
-//! [2]
-
-//! [3]
-    buttonBox = new QDialogButtonBox(Qt::Vertical);
-    buttonBox->addButton(findButton, QDialogButtonBox::ActionRole);
-    buttonBox->addButton(moreButton, QDialogButtonBox::ActionRole);
-
-    connect(moreButton, &QAbstractButton::toggled, extension, &QWidget::setVisible);
-
-    QVBoxLayout *extensionLayout = new QVBoxLayout;
-    extensionLayout->setContentsMargins(QMargins());
-    extensionLayout->addWidget(wholeWordsCheckBox);
-    extensionLayout->addWidget(backwardCheckBox);
-    extensionLayout->addWidget(searchSelectionCheckBox);
-    extension->setLayout(extensionLayout);
-//! [3]
-
-//! [4]
-    QHBoxLayout *topLeftLayout = new QHBoxLayout;
-    topLeftLayout->addWidget(label);
-    topLeftLayout->addWidget(lineEdit);
-
-    QVBoxLayout *leftLayout = new QVBoxLayout;
-    leftLayout->addLayout(topLeftLayout);
-    leftLayout->addWidget(caseCheckBox);
-    leftLayout->addWidget(fromStartCheckBox);
-
-    QGridLayout *mainLayout = new QGridLayout;
-    mainLayout->setSizeConstraint(QLayout::SetFixedSize);
-    mainLayout->addLayout(leftLayout, 0, 0);
-    mainLayout->addWidget(buttonBox, 0, 1);
-    mainLayout->addWidget(extension, 1, 0, 1, 2);
-    mainLayout->setRowStretch(2, 1);
-
-    setLayout(mainLayout);
-
-    setWindowTitle(tr("Extension"));
-//! [4] //! [5]
-    extension->hide();
-}
-//! [5]
diff --git a/examples/widgets/dialogs/extension/finddialog.h b/examples/widgets/dialogs/extension/finddialog.h
deleted file mode 100644
index 61bc442f46..0000000000
--- a/examples/widgets/dialogs/extension/finddialog.h
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef FINDDIALOG_H
-#define FINDDIALOG_H
-
-#include <QDialog>
-
-QT_BEGIN_NAMESPACE
-class QCheckBox;
-class QDialogButtonBox;
-class QGroupBox;
-class QLabel;
-class QLineEdit;
-class QPushButton;
-QT_END_NAMESPACE
-
-//! [0]
-class FindDialog : public QDialog
-{
-    Q_OBJECT
-
-public:
-    FindDialog(QWidget *parent = nullptr);
-
-private:
-    QLabel *label;
-    QLineEdit *lineEdit;
-    QCheckBox *caseCheckBox;
-    QCheckBox *fromStartCheckBox;
-    QCheckBox *wholeWordsCheckBox;
-    QCheckBox *searchSelectionCheckBox;
-    QCheckBox *backwardCheckBox;
-    QDialogButtonBox *buttonBox;
-    QPushButton *findButton;
-    QPushButton *moreButton;
-    QWidget *extension;
-};
-//! [0]
-
-#endif
diff --git a/examples/widgets/dialogs/extension/main.cpp b/examples/widgets/dialogs/extension/main.cpp
deleted file mode 100644
index 730a0347f4..0000000000
--- a/examples/widgets/dialogs/extension/main.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QApplication>
-
-#include "finddialog.h"
-
-int main(int argc, char *argv[])
-{
-    QApplication app(argc, argv);
-    FindDialog dialog;
-
-    dialog.show();
-
-    return app.exec();
-}
diff --git a/examples/widgets/doc/src/extension.qdoc b/examples/widgets/doc/src/extension.qdoc
deleted file mode 100644
index 8f35e0e196..0000000000
--- a/examples/widgets/doc/src/extension.qdoc
+++ /dev/null
@@ -1,121 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example dialogs/extension
-    \title Extension Example
-    \ingroup examples-dialogs
-
-    \brief The Extension example shows how to add an extension to a QDialog
-    using the QAbstractButton::toggled() signal and the
-    QWidget::setVisible() slot.
-
-    \image extension-example.png Screenshot of the Extension example
-
-    The Extension application lets the user add search parameters in
-    a dialog and launch a simple or advanced search.
-
-    The simple search has two options: \uicontrol {Match case} and \uicontrol
-    {Search from start}. The advanced search offers search for \uicontrol {Whole words},
-    \uicontrol {Search backward}, and \uicontrol {Search selection}.  The
-    application starts with simple search as the default. Click the \uicontrol More button
-    to show the advanced search options:
-
-    \image extension_more.png Screenshot of the Extension example
-
-    \section1 FindDialog Class Definition
-
-    The \c FindDialog class inherits QDialog. QDialog is the
-    base class for dialog windows. A dialog window is a top-level
-    window mostly used for short-term tasks and brief communications
-    with the user.
-
-    \snippet dialogs/extension/finddialog.h 0
-
-    The \c FindDialog widget is the main application widget, and
-    displays the application's search options and controlling
-    buttons.
-
-    In addition to the constructor, there are several child widgets:
-
-    \list
-    \li A QLineEdit with an associated QLabel to let the
-    user type a word to search for.
-    \li Several \l {QCheckBox}{QCheckBox}es to facilitate the search options.
-    \li Three \l {QPushButton}{QPushButton}s:
-        \list
-        \li the \uicontrol Find button to start a search
-        \li the \uicontrol More button to enable an advanced search
-        \li a QWidget representing the application's extension part
-        \endlist
-    \endlist
-
-    \section1 FindDialog Class Implementation
-
-    Create the standard child widgets for the simple search in the constructor:
-    the QLineEdit with the associated QLabel, two {QCheckBox}es and all the
-    \l {QPushButton}{QPushButton}s.
-
-    \snippet dialogs/extension/finddialog.cpp 0
-
-    This snippet illustrates how you can define a shortcut key
-    for a widget. A shortcut should be defined by putting the ampersand
-    character (\c &) in front of the letter that should
-    become the shortcut.
-    For example, for \uicontrol {Find what}, pressing \uicontrol Alt
-    and \uicontrol w transfers focus to the QLineEdit widget.
-    Shortcuts can also be used for checking on or off a checkmark.
-    For example, pressing \uicontrol Alt and \uicontrol c puts the check mark
-    on \uicontrol {Match Case} if it was unchecked and vice versa.
-    It is the QLabel::setBuddy() method that links a widget to the shortcut
-    character if it has been defined.
-
-    Set the \uicontrol Find button's default property to true, using the
-    QPushButton::setDefault() function. Then the push button will be
-    pressed if the user presses the Enter (or Return) key. Note that a
-    QDialog can only have one default button.
-
-    \snippet dialogs/extension/finddialog.cpp 2
-
-    Create the extension widget, and the \l {QCheckBox}{QCheckBox}es associated
-    with the advanced search options.
-
-    \snippet dialogs/extension/finddialog.cpp 3
-
-    Now that the extension widget is created, connect the \uicontrol
-    More button's \l{QAbstractButton::toggled()}{toggled()} signal to
-    the extension widget's \l{QWidget::setVisible()}{setVisible()} slot.
-
-    The QAbstractButton::toggled() signal is emitted whenever a
-    checkable button changes its state. The signal's argument is true
-    if the button is checked, or false if the button is unchecked. The
-    QWidget::setVisible() slot sets the widget's visible status. If
-    the status is true the widget is shown, otherwise the widget is
-    hidden.
-
-    Since the \uicontrol More button is checkable, the connection makes
-    sure that the extension widget is shown depending on the state of
-    the \uicontrol More button.
-
-    Create checkboxes associated with the advanced search options in
-    a layout installed on the extension widget.
-
-    \snippet dialogs/extension/finddialog.cpp 4
-
-    Before creating the main layout, create several child layouts
-    for the widgets. First align the QLabel and its buddy, the
-    QLineEdit, using a QHBoxLayout. Then align the QLabel and the QLineEdit
-    vertically with the checkboxes associated with the simple search,
-    using a QVBoxLayout. Create also a QVBoxLayout for the buttons.
-    Finally, lay out the two latter layouts and the extension widget
-    using a QGridLayout.
-
-    \snippet dialogs/extension/finddialog.cpp 5
-
-    Hide the extension widget using the QWidget::hide()
-    function, making the application only show the simple search
-    options when it starts. When the user wants to access the advanced
-    search options, the dialog only needs to change the visibility of
-    the extension widget. Qt's layout management takes care of the
-    dialog's appearance.
-*/