135 lines
4.4 KiB
QML
135 lines
4.4 KiB
QML
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Quick Controls module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 2.2
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// KNOWN ISSUES
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// none
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/*!
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\qmltype ModalPopupBehavior
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\internal
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\inqmlmodule QtQuick.Controls.Private
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*/
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Item {
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id: popupBehavior
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property bool showing: false
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property bool whenAlso: true // modifier to the "showing" property
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property bool consumeCancelClick: true
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property int delay: 0 // delay before popout becomes visible
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property int deallocationDelay: 3000 // 3 seconds
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property Component popupComponent
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property alias popup: popupLoader.item // read-only
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property alias window: popupBehavior.root // read-only
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signal prepareToShow
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signal prepareToHide
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signal cancelledByClick
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// implementation
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anchors.fill: parent
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onShowingChanged: notifyChange()
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onWhenAlsoChanged: notifyChange()
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function notifyChange() {
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if(showing && whenAlso) {
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if(popupLoader.sourceComponent == undefined) {
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popupLoader.sourceComponent = popupComponent;
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}
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} else {
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mouseArea.enabled = false; // disable before opacity is changed in case it has fading behavior
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if(Qt.isQtObject(popupLoader.item)) {
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popupBehavior.prepareToHide();
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popupLoader.item.opacity = 0;
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}
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}
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}
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property Item root: findRoot()
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function findRoot() {
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var p = parent;
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while(p.parent != undefined)
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p = p.parent;
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return p;
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}
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MouseArea {
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id: mouseArea
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anchors.fill: parent
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enabled: false // enabled only when popout is showing
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onPressed: {
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popupBehavior.showing = false;
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mouse.accepted = consumeCancelClick;
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cancelledByClick();
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}
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}
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Loader {
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id: popupLoader
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}
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Timer { // visibility timer
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running: Qt.isQtObject(popupLoader.item) && showing && whenAlso
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interval: delay
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onTriggered: {
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popupBehavior.prepareToShow();
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mouseArea.enabled = true;
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popup.opacity = 1;
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}
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}
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Timer { // deallocation timer
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running: Qt.isQtObject(popupLoader.item) && popupLoader.item.opacity == 0
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interval: deallocationDelay
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onTriggered: popupLoader.sourceComponent = undefined
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}
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states: State {
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name: "active"
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when: Qt.isQtObject(popupLoader.item) && popupLoader.item.opacity > 0
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ParentChange { target: popupBehavior; parent: root }
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}
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}
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