dynamicview.qml Example File

tutorials/dynamicview/dynamicview4/dynamicview.qml
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import QtQuick 2.0 import QtQml.Models 2.1 Rectangle { id: root width: 300; height: 400 Component { id: dragDelegate MouseArea { id: dragArea property bool held: false anchors { left: parent.left; right: parent.right } height: content.height enabled: visualModel.sortOrder == visualModel.lessThan.length drag.target: held ? content : undefined drag.axis: Drag.YAxis onPressAndHold: held = true onReleased: held = false Rectangle { id: content anchors { horizontalCenter: parent.horizontalCenter verticalCenter: parent.verticalCenter } width: dragArea.width; height: column.implicitHeight + 4 border.width: 1 border.color: "lightsteelblue" color: dragArea.held ? "lightsteelblue" : "white" Behavior on color { ColorAnimation { duration: 100 } } radius: 2 Drag.active: dragArea.held Drag.source: dragArea Drag.hotSpot.x: width / 2 Drag.hotSpot.y: height / 2 states: State { when: dragArea.held ParentChange { target: content; parent: root } AnchorChanges { target: content anchors { horizontalCenter: undefined; verticalCenter: undefined } } } Column { id: column anchors { fill: parent; margins: 2 } Text { text: 'Name: ' + name } Text { text: 'Type: ' + type } Text { text: 'Age: ' + age } Text { text: 'Size: ' + size } } } DropArea { anchors { fill: parent; margins: 10 } onEntered: { visualModel.items.move( drag.source.DelegateModel.itemsIndex, dragArea.DelegateModel.itemsIndex) } } } } DelegateModel { id: visualModel property var lessThan: [ function(left, right) { return left.name < right.name }, function(left, right) { return left.type < right.type }, function(left, right) { return left.age < right.age }, function(left, right) { if (left.size == "Small") return true else if (right.size == "Small") return false else if (left.size == "Medium") return true else return false } ] property int sortOrder: orderSelector.selectedIndex onSortOrderChanged: items.setGroups(0, items.count, "unsorted") function insertPosition(lessThan, item) { var lower = 0 var upper = items.count while (lower < upper) { var middle = Math.floor(lower + (upper - lower) / 2) var result = lessThan(item.model, items.get(middle).model); if (result) { upper = middle } else { lower = middle + 1 } } return lower } function sort(lessThan) { while (unsortedItems.count > 0) { var item = unsortedItems.get(0) var index = insertPosition(lessThan, item) item.groups = "items" items.move(item.itemsIndex, index) } } items.includeByDefault: false groups: VisualDataGroup { id: unsortedItems name: "unsorted" includeByDefault: true onChanged: { if (visualModel.sortOrder == visualModel.lessThan.length) setGroups(0, count, "items") else visualModel.sort(visualModel.lessThan[visualModel.sortOrder]) } } model: PetsModel {} delegate: dragDelegate } ListView { id: view anchors { left: parent.left; top: parent.top; right: parent.right; bottom: orderSelector.top; margins: 2 } model: visualModel spacing: 4 cacheBuffer: 50 } ListSelector { id: orderSelector anchors { left: parent.left; right: parent.right; bottom: parent.bottom; margins: 2 } label: "Sort By" list: [ "Name", "Type", "Age", "Size", "Custom" ] } }