/usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/Popups/1.3/PopupBase.qml is in qml-module-ubuntu-components 1.3.1918+16.04.20160404-0ubuntu1.
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* Copyright 2012 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import QtQuick 2.4
import Ubuntu.Components 1.3
/*!
\qmltype PopupBase
\inqmlmodule Ubuntu.Components.Popups 1.0
\ingroup ubuntu-popups
\brief The base class for all dialogs, sheets and popovers. Do not use directly.
Examples: See subclasses.
*/
OrientationHelper {
id: popupBase
/*!
The property holds the area used to dismiss the popups, the area from where
mouse and touch events will be grabbed. By default this area is the Popup
itself.
*/
property Item dismissArea: popupBase
/*!
The property specifies whether to forward or not the mouse and touch events
happening outside of the popover. By default all events are grabbed.
*/
property bool grabDismissAreaEvents: true
/*!
\internal
FIXME: publish this property once agreed
*/
property PropertyAnimation fadingAnimation: PropertyAnimation{duration: 0}
// without specifying width and height below, some width calculations go wrong in Sheet.
// I guess popupBase.width is not correctly set initially
width: parent ? parent.width : undefined
height: parent ? parent.height : undefined
// copy value of automaticOrientation from root object (typically a MainView)
automaticOrientation: stateWrapper.rootItem && stateWrapper.rootItem.automaticOrientation ?
stateWrapper.rootItem.automaticOrientation : false
anchorToKeyboard: true
LayoutMirroring.enabled: Qt.application.layoutDirection == Qt.RightToLeft
LayoutMirroring.childrenInherit: true
/*!
Make the popup visible. Reparent to the background area object first if needed.
Only use this function if you handle memory management. Otherwise use
PopupUtils.open() to do it automatically.
*/
function show() {
if ((typeof popupBase["reparentToRootItem"]) === "boolean") {
// So the property exists. Let's use it then.
if (reparentToRootItem) {
parent = stateWrapper.rootItem;
}
} else {
// The property does not exist. Default is to reparent
parent = stateWrapper.rootItem;
}
if (!dismissArea) {
dismissArea = parent
}
// Without setting the parent, mapFromItem() breaks in internalPopupUtils.
stateWrapper.state = 'opened';
}
/*!
Hide the popup.
Only use this function if you handle memory management. Otherwise use
PopupUtils.close() to do it automatically.
*/
function hide() {
stateWrapper.state = 'closed';
}
/*!
\internal
When the popup is created by calling PopupUtils.open(),
onVisibleChanged is connected to __closeIfHidden().
*/
function __closeIfHidden() {
if (!visible) __closePopup();
}
/*!
\internal
The function closes the popup. This is called when popup's caller is no
longer valid.
*/
function __closePopup() {
if (popupBase !== undefined) {
popupBase.destroy();
}
}
/*!
\internal
Foreground component excluded from InverseMouseArea
*/
property Item __foreground
/*!
\internal
Set to true if the InverseMouseArea should dismiss the area
*/
property bool __closeOnDismissAreaPress: false
/*!
\internal
Property driving dimming the popup's background. The default is the same as
defined in the style
*/
property alias __dimBackground: background.dim
/*!
\internal
Property to control dismissArea event capture.
*/
property alias __eventGrabber: eventGrabber
// dimmer
Rectangle {
id: background
// styling properties
property bool dim: false
anchors.fill: parent
visible: dim
color: popupBase.width > units.gu(60) ? Qt.rgba(0, 0, 0, 0.6) : Qt.rgba(0, 0, 0, 0.9)
}
InverseMouseArea {
id: eventGrabber
enabled: true
acceptedButtons: Qt.LeftButton | Qt.MiddleButton | Qt.RightButton
anchors.fill: __foreground
sensingArea: dismissArea
propagateComposedEvents: !grabDismissAreaEvents
onPressed: if (__closeOnDismissAreaPress) popupBase.hide()
onWheel: wheel.accepted = true
}
MouseArea {
acceptedButtons: Qt.LeftButton | Qt.MiddleButton | Qt.RightButton
anchors.fill: __foreground
onWheel: wheel.accepted = true
}
// set visible as false by default
visible: false
opacity: 0.0
/*! \internal */
onVisibleChanged: stateWrapper.state = (visible) ? 'opened' : 'closed'
/*! \internal */
onParentChanged: stateWrapper.rootItem = QuickUtils.rootItem(popupBase)
Component.onCompleted: {
stateWrapper.saveActiveFocus();
stateWrapper.rootItem = QuickUtils.rootItem(popupBase);
}
Item {
id: stateWrapper
property Item rootItem: QuickUtils.rootItem(popupBase)
property bool windowIsValid: typeof window != "undefined"
property Item prevFocus
function saveActiveFocus() {
// 'window' context property is exposed to QML after component completion
// before rendering is complete, therefore a simple 'if (window)' check is
// not enough.
if (windowIsValid) {
prevFocus = window.activeFocusItem;
windowIsValidChanged.disconnect(saveActiveFocus);
} else {
// connect the function so we can save the original focus item
windowIsValidChanged.connect(saveActiveFocus);
}
}
function restoreActiveFocus() {
if (prevFocus) {
if (prevFocus.hasOwnProperty("requestFocus")) {
prevFocus.requestFocus(Qt.OtherFocusReason);
} else {
prevFocus.forceActiveFocus(Qt.OtherFocusReason);
}
}
}
states: [
State {
name: 'closed'
extend: ''
},
State {
name: 'opened'
}
]
transitions: [
Transition {
from: "*"
to: "opened"
SequentialAnimation {
ScriptAction {
script: popupBase.visible = true
}
NumberAnimation {
target: popupBase
property: "opacity"
from: 0.0
to: 1.0
duration: fadingAnimation.duration
easing: fadingAnimation.easing
}
}
},
Transition {
from: "opened"
to: "closed"
SequentialAnimation {
NumberAnimation {
target: popupBase
property: "opacity"
from: 1.0
to: 0.0
duration: fadingAnimation.duration
easing: fadingAnimation.easing
}
ScriptAction {
script: {
popupBase.visible = false;
if (eventGrabber.enabled) {
stateWrapper.restoreActiveFocus();
}
}
}
}
}
]
}
}
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