在桌面应用程序中,我有一个简单的文本字段(QtQuick.Control 2),它根据状态用不同的颜色装饰。它还应该根据当前状态使用不同的 RegExpValidator(带有另一个正则表达式)。
如何在运行时切换/更改/修改 RegExpValidator? (例如,当按下 PushButton 或触发 onEditingFinished-Event 时)
当前 QML 代码:
import QtQuick 2.3
import QtQuick.Controls 2.2 as Quick
import QtQuick.Layouts 1.3
RowLayout {
id: layout
property color modeColor: "whitesmoke"
property color modeTextColor: "gray"
spacing: 0
Rectangle {
id: rect
Layout.fillWidth: true
Layout.minimumWidth: 100
Layout.preferredWidth: 100
Layout.maximumWidth: 100
Layout.preferredHeight: layout.implicitHeight
color: modeColor
border.width: 1
border.color: modeColor
Text {
id: recttext
anchors.centerIn: parent
text: "Enter key"
color: modeTextColor
}
}
Quick.TextField {
id: input
Layout.fillWidth: true
placeholderText: "Text"
background: Rectangle {
color: "whitesmoke"
border.width: 1
border.color: modeColor
}
validator: RegExpValidator { regExp: /.*:$/ }
onEditingFinished: {
recttext.text = input.text
if (layout.state == "keyinput") {
layout.state = "valinput"
// should change to another regExp validator
} else {
layout.state = "keyinput"
// should change to another regExp validator
}
input.clear()
}
Keys.onPressed: {
if (event.key == Qt.Key_Escape) {
layout.state = "keyinput"
recttext.text = "Enter key"
input.clear()
}
}
}
states: [
State {
name: "keyinput"
PropertyChanges { target: layout; modeColor: "whitesmoke"; modeTextColor: "gray" }
},
State {
name: "valinput"
PropertyChanges { target: layout; modeColor: "red"; modeTextColor: "white" }
}
]
state: "keyinput"
}
最终目标是用于输入键值对的输入线(我可以在其中对特定键使用特定的 RegExpValidator。)
这里应该使用RegExpValidator来输入密钥,例如“author:”+按Enter键(键盘输入模式)
切换到valueinput-mode后,应该使用另一个RegExpValidator:
property var valid1 : IntValidator { bottom:0; top: 2000}
property var valid2 : IntValidator { bottom:2000; top: 4000}
...
validator: if(condition) { valid1 }
else { valid2 }