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Viewing changes to qml/Dash/PullToRefreshScopeStyle.qml

  • Committer: Ying-Chun Liu
  • Date: 2014-10-09 14:39:21 UTC
  • mfrom: (1301.1.37 unity8)
  • Revision ID: paul.liu@canonical.com-20141009143921-mg9of0dtqgcmsiva
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qml/Dash/PullToRefreshScopeStyle.qml
 
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/*
 
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 * Copyright (C) 2014 Canonical, Ltd.
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License as published by
 
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 * the Free Software Foundation; version 3.
 
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 *
 
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 * This program is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU General Public License
 
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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 */
 
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import QtQuick 2.3
 
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import Ubuntu.Components 1.1
 
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import Ubuntu.Components.Styles 1.1
 
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/**
 
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 * TODO: Once the SDK version of PullToRefreshStyle doesn't have bug 1375799
 
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 * (https://launchpad.net/bugs/1375799) anymore, we should switch to using a
 
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 * a subclass of the Ambiance version with a hidden ActivityIndicator.
 
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 */
 
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PullToRefreshStyle {
 
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    releaseToRefresh: styledItem.target.originY - styledItem.target.contentY > activationThreshold
 
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    Connections {
 
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        property bool willRefresh: false
 
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        target: styledItem.target
 
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        onDraggingChanged: {
 
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            if (!styledItem.target.dragging && releaseToRefresh) {
 
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                willRefresh = true
 
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            }
 
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        }
 
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        onContentYChanged: {
 
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            if (styledItem.target.originY - styledItem.target.contentY == 0 && willRefresh) {
 
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                styledItem.refresh()
 
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                willRefresh = false
 
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            }
 
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        }
 
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    }
 
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    Label {
 
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        id: pullLabel
 
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        anchors.horizontalCenter: parent.horizontalCenter
 
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        horizontalAlignment: Text.AlignHCenter
 
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        verticalAlignment: Text.AlignVCenter
 
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        states: [
 
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            State {
 
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                name: "pulling"
 
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                when: styledItem.target.dragging && !releaseToRefresh
 
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                PropertyChanges { target: pullLabel; text: i18n.tr("Pull to refresh…") }
 
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            },
 
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            State {
 
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                name: "releasable"
 
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                when: styledItem.target.dragging && releaseToRefresh
 
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                PropertyChanges { target: pullLabel; text: i18n.tr("Release to refresh…") }
 
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            }
 
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        ]
 
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        transitions: Transition {
 
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            SequentialAnimation {
 
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                UbuntuNumberAnimation {
 
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                    target: pullLabel
 
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                    property: "opacity"
 
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                    to: 0.0
 
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                }
 
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                PropertyAction {
 
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                    target: pullLabel
 
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                    property: "text"
 
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                }
 
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                UbuntuNumberAnimation {
 
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                    target: pullLabel
 
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                    property: "opacity"
 
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                    to: 1.0
 
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                }
 
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            }
 
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        }
 
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    }
 
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}