ModalPopupBehavior.qml 4.44 KiB
/****************************************************************************
**
** 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 2.1
// KNOWN ISSUES
// none
/*!
        \qmltype ModalPopupBehavior
        \internal
        \inqmlmodule QtQuick.Controls.Private
Item {
    id: popupBehavior
    property bool showing: false
    property bool whenAlso: true            // modifier to the "showing" property
    property bool consumeCancelClick: true
    property int delay: 0                   // delay before popout becomes visible
    property int deallocationDelay: 3000    // 3 seconds
    property Component popupComponent
    property alias popup: popupLoader.item  // read-only
    property alias window: popupBehavior.root // read-only
    signal prepareToShow
    signal prepareToHide
    signal cancelledByClick
    // implementation
7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136
anchors.fill: parent onShowingChanged: notifyChange() onWhenAlsoChanged: notifyChange() function notifyChange() { if(showing && whenAlso) { if(popupLoader.sourceComponent == undefined) { popupLoader.sourceComponent = popupComponent; } } else { mouseArea.enabled = false; // disable before opacity is changed in case it has fading behavior if(Qt.isQtObject(popupLoader.item)) { popupBehavior.prepareToHide(); popupLoader.item.opacity = 0; } } } property Item root: findRoot() function findRoot() { var p = parent; while(p.parent != undefined) p = p.parent; return p; } MouseArea { id: mouseArea anchors.fill: parent enabled: false // enabled only when popout is showing onPressed: { popupBehavior.showing = false; mouse.accepted = consumeCancelClick; cancelledByClick(); } } Loader { id: popupLoader } Timer { // visibility timer running: Qt.isQtObject(popupLoader.item) && showing && whenAlso interval: delay onTriggered: { popupBehavior.prepareToShow(); mouseArea.enabled = true; popup.opacity = 1; } } Timer { // deallocation timer running: Qt.isQtObject(popupLoader.item) && popupLoader.item.opacity == 0 interval: deallocationDelay onTriggered: popupLoader.sourceComponent = undefined } states: State { name: "active" when: Qt.isQtObject(popupLoader.item) && popupLoader.item.opacity > 0 ParentChange { target: popupBehavior; parent: root } } }