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Viewing changes to qml/Dash/PreviewView.qml

  • Committer: Albert Astals Cid
  • Date: 2016-03-10 08:32:16 UTC
  • mfrom: (2136.2.83 unity8)
  • Revision ID: albert.astals@canonical.com-20160310083216-8nnplxl85qx13xd0
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Lines of Context:
qml/Dash/PreviewView.qml
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Item {
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    id: root
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    property int initialIndex: -1
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    property var initialIndexPreviewStack: null
 
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    property bool open: false
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    property var scope: null
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    property var scopeStyle: null
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    property string categoryId
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    property bool usedInitialIndex: false
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    property alias showSignatureLine: header.showSignatureLine
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    property alias open: previewListView.open
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    property alias model: previewListView.model
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    property alias currentIndex: previewListView.currentIndex
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    property alias currentItem: previewListView.currentItem
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    property alias count: previewListView.count
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    readonly property bool processing: currentItem && (!currentItem.previewModel.loaded
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                                                       || currentItem.previewModel.processingAction)
 
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    property alias previewModel: preview.previewModel
 
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    readonly property bool processing: previewModel && (!previewModel.loaded || previewModel.processingAction)
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    signal backClicked()
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        onBackClicked: root.backClicked()
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    }
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    ListView  {
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        id: previewListView
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        objectName: "listView"
 
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    onOpenChanged: {
 
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        if (!open) {
 
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            root.scope.cancelActivation();
 
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        }
 
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    }
 
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    Previews.Preview {
 
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        id: preview
 
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        objectName: "preview"
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        anchors {
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            top: header.bottom
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            bottom: parent.bottom
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            left: parent.left
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            right: parent.right
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        }
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        orientation: ListView.Horizontal
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        highlightRangeMode: ListView.StrictlyEnforceRange
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        snapMode: ListView.SnapOneItem
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        boundsBehavior: Flickable.DragAndOvershootBounds
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        highlightMoveDuration: 250
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        flickDeceleration: units.gu(625)
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        maximumFlickVelocity: width * 5
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        cacheBuffer: 0
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        property bool open: false
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        onOpenChanged: {
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            if (!open) {
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                // Cancel any pending preview requests or actions
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                if (previewListView.currentItem && previewListView.currentItem.previewData !== undefined) {
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                    previewListView.currentItem.previewData.cancelAction();
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                }
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                root.scope.cancelActivation();
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                model = undefined;
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            }
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        }
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        onModelChanged: {
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            if (count > 0 && initialIndex >= 0 && !usedInitialIndex) {
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                usedInitialIndex = true;
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                previewListView.positionViewAtIndex(initialIndex, ListView.SnapPosition);
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            }
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        }
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        delegate: Previews.Preview {
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            id: preview
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            objectName: "preview" + index
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            height: previewListView.height
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            width: previewListView.width
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            isCurrent: ListView.isCurrentItem
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            readonly property var previewStack: {
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                if (root.open) {
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                    if (index === root.initialIndex) {
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                        return root.initialIndexPreviewStack;
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                    } else {
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                        return root.scope.preview(result, root.categoryId);
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                    }
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                } else {
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                    return null;
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                }
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            }
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            previewModel: {
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                if (previewStack) {
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                    return previewStack.getPreviewModel(0);
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                } else {
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                    return null;
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                }
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            }
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            scopeStyle: root.scopeStyle
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        }
 
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        scopeStyle: root.scopeStyle
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    }
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    MouseArea {
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        id: processingMouseArea
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        objectName: "processingMouseArea"
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        anchors {
 
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            top: header.bottom
 
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            bottom: parent.bottom
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            left: parent.left
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            right: parent.right
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            top: header.bottom
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            bottom: parent.bottom
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        }
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        enabled: root.processing
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    }
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}