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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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
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 }
}
}
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