动态填充 Griffon 应用程序中的组合框

发布于 2024-08-22 17:57:58 字数 689 浏览 8 评论 0原文

我的 Griffon App（或 groovy swingBuilder）视图中有 2 个组合框。

country = comboBox(items:country(), selectedItem: bind(target:model, 'country', 
            value:model.country), actionPerformed: controller.getStates)

state = comboBox(items:bind(source:model, sourceProperty:'states'), 
                   selectedItem: bind(target:model, 'state', value:model.state))

控制器中的 getStates()，根据所选国家/地区在模型中填充 @Bindable List states = []。

上面的代码没有给出任何错误，但状态从未被填充。

我将状态从 List 更改为范围对象（虚拟），它给我一个错误 MissingPropertyException No such property items for class java.swing.JComboBox。

我在这里错过了什么吗？ Nabble 上有几个与此相关的条目，但没有任何内容是明确的。如果我有一个标签而不是第二个组合框，上面的代码就可以工作。

原文

I have 2 comboBoxes in my View of Griffon App (or groovy swingBuilder)

country = comboBox(items:country(), selectedItem: bind(target:model, 'country', 
            value:model.country), actionPerformed: controller.getStates)

state = comboBox(items:bind(source:model, sourceProperty:'states'), 
                   selectedItem: bind(target:model, 'state', value:model.state))

The getStates() in the controller, populates @Bindable List states = [] in the model based on the country selected.

The above code doesn't give any errors, but the states are never populated.

I changed the states from being List to a range object(dummy), it gives me an error MissingPropertyException No such property items for class java.swing.JComboBox.

Am I missing something here? There are a couple of entries related to this on Nabble but nothing is clear. The above code works if I had a label instead of a second comboBox.

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时光沙漏 2024-08-29 17:57:58

我相信 items: 属性是不可观察的，它仅在构建节点时使用。通过在模型上设置绑定或使用 GlazedLists 的 EventList 可能会获得更好的结果。

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骄兵必败 2024-08-29 17:57:58

型号：

    @Bindable String country = ""
    EventList statesList = new BasicEventList()

控制器：

    def showStates = { evt = null ->
    model.statesList.clear()
    def states = []
    if(model.country == "US") 
                 states = ["CA","TX", "CO", "VA"]
    else if(model.country == "Canada")
         states =  ["BC", "AL"]
    else
          states = ["None"]

    edt {model.statesList.addAll(states.collect{it})}
    }

视图：

    def createComboBoxStatesModel() { 
                   new EventComboBoxModel(model.daysList) }

    comboBox( items:["USA","Canada","other"], selectedItem: bind(target:model, 'country', value: model.country), actionPerformed : controller.showStates)

    comboBox( model: createComboBoxStatesModel(), selectedItem: bind(target:model, 'state', value:model.state))

Model:

    @Bindable String country = ""
    EventList statesList = new BasicEventList()

Controller:

    def showStates = { evt = null ->
    model.statesList.clear()
    def states = []
    if(model.country == "US") 
                 states = ["CA","TX", "CO", "VA"]
    else if(model.country == "Canada")
         states =  ["BC", "AL"]
    else
          states = ["None"]

    edt {model.statesList.addAll(states.collect{it})}
    }

View:

    def createComboBoxStatesModel() { 
                   new EventComboBoxModel(model.daysList) }

    comboBox( items:["USA","Canada","other"], selectedItem: bind(target:model, 'country', value: model.country), actionPerformed : controller.showStates)

    comboBox( model: createComboBoxStatesModel(), selectedItem: bind(target:model, 'state', value:model.state))

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