qt - 在 QML TableView 中单击时编辑数据(如 excel)

Question

我有一些代码

import QtQuick 2.2
import QtQuick.Window 2.1
import QtQuick.Controls 1.2

Window {
    visible: true
    width: 538
    height: 360
ToolBar {
    id: toolbar
    width: parent.width

    ListModel {
        id: delegatemenu
        ListElement { text: "Shiny delegate" }
        ListElement { text: "Scale selected" }
        ListElement { text: "Editable items" }
    }

    ComboBox {
        id: delegateChooser
        model: delegatemenu
        width: 150
        anchors.left: parent.left
        anchors.leftMargin: 8
        anchors.verticalCenter: parent.verticalCenter
    }
}

ListModel {
    id: largeModel
    Component.onCompleted: {
        for (var i=0 ; i< 50 ; ++i)
            largeModel.append({"name":"Person "+i , "age": Math.round(Math.random()*100), "gender": Math.random()>0.5 ? "Male" : "Female"})
    }
}


Item {
    anchors.fill: parent

    Component {
        id: editableDelegate
        Item {

            Text {
                width: parent.width
                anchors.margins: 4
                anchors.left: parent.left
                anchors.verticalCenter: parent.verticalCenter
                elide: styleData.elideMode
                text: styleData.value !== undefined ? styleData.value : ""
                color: styleData.textColor
                visible: !styleData.selected
            }
            Loader { 
                id: loaderEditor
                anchors.fill: parent
                anchors.margins: 4
                Connections {
                    target: loaderEditor.item
                    onAccepted: {
                        if (typeof styleData.value === 'number')
                            largeModel.setProperty(styleData.row, styleData.role, Number(parseFloat(loaderEditor.item.text).toFixed(0)))
                        else
                            largeModel.setProperty(styleData.row, styleData.role, loaderEditor.item.text)
                    }
                }
                sourceComponent: styleData.selected ? editor : null
                Component {
                    id: editor
                    TextInput {
                        id: textinput
                        color: styleData.textColor
                        text: styleData.value
                        MouseArea {
                            id: mouseArea
                            anchors.fill: parent
                            hoverEnabled: true
                            onClicked: textinput.forceActiveFocus()
                        }
                    }
                }
            }
        }
    }
    TableView {
        model: largeModel
        anchors.margins: 12
        anchors.fill:parent

        TableViewColumn {
            role: "name"
            title: "Name"
            width: 120
        }
        TableViewColumn {
            role: "age"
            title: "Age"
            width: 120
        }
        TableViewColumn {
            role: "gender"
            title: "Gender"
            width: 120
        }


            itemDelegate: {
                return editableDelegate;
            }
        }
    }
}

为什么当我点击并编辑数据时，有时我的更改没有保存？
也许有人可以解决我的问题或代码？我只想简单地编辑表格(如 Excel)。谢谢您的回复。

Answer 1

onEditingFinished应该实现处理程序而不是 onAccepted一中Connections { target: loaderEditor.item ... } .与 onAccepted处理程序，只有在按下 Enter 键时才会保存更改。

引自 documentation :

accepted()

This signal is emitted when the Return or Enter key is pressed. Note that if there is a validator or inputMask set on the text input, the signal will only be emitted if the input is in an acceptable state.

The corresponding handler is onAccepted. In the original variant changes are saved only

附言需要说明的是，原码可以在 here找到.