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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

import QtQuick 2.2
import QtQuick.Controls 1.1
import QtQuick.Controls.Private 1.0

/*!
    \qmltype Button
    \inqmlmodule QtQuick.Controls
    \since 5.1
    \ingroup controls
    \brief A push button with a text label.

    The push button is perhaps the most commonly used widget in any graphical
    user interface. Pushing (or clicking) a button commands the computer to
    perform some action or answer a question. Common examples of buttons are
    OK, Apply, Cancel, Close, Yes, No, and Help buttons.

    Button is similar to the QPushButton widget.

    You can create a custom appearance for a Button by
    assigning a \l {QtQuick.Controls.Styles::ButtonStyle}{ButtonStyle}.
 */
BasicButton {
    id: button

    /*! This property holds whether the push button is the default button.
        Default buttons decide what happens when the user presses enter in a
        dialog without giving a button explicit focus. \note This property only
        changes the appearance of the button. The expected behavior needs to be
        implemented by the user.

        The default value is \c false.
    */
    property bool isDefault: false

    /*! Assign a \l Menu to this property to get a pull-down menu button.

        The default value is \c null.
     */
    property Menu menu: null

    __effectivePressed: __behavior.effectivePressed || menu && menu.__popupVisible

    activeFocusOnTab: true

    Accessible.name: text

    style: Qt.createComponent(Settings.style + "/ButtonStyle.qml", button)

    Binding {
        target: menu
        property: "__minimumWidth"
        value: button.__panel.width
    }

    Binding {
        target: menu
        property: "__visualItem"
        value: button
    }

    Connections {
        target: __behavior
        onEffectivePressedChanged: {
            if (__behavior.effectivePressed && menu)
                popupMenuTimer.start()
        }
    }

    Timer {
        id: popupMenuTimer
        interval: 10
        onTriggered: {
            __behavior.keyPressed = false
            if (Qt.application.layoutDirection === Qt.RightToLeft)
                menu.__popup(button.width, button.height, 0)
            else
                menu.__popup(0, button.height, 0)
        }
    }
}