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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 Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
import QtQuick 1.0
// KNOWN ISSUES
// none
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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