第一步是為每個 UI 組件創建訪問器方法，如清單 2 所示。按照該方式，我可以在需要時獲取它們。
清單 2. 向 UI 組件添加訪問器方法使其可用
public class WordModule implements EntryPoint {
private Label label;
private Button button;
private TextBox textBox;
private Label outputLabel;
protected Button getButton() {
if (this.button == null) {
this.button = new Button("Submit");
}
return this.button;
}
protected Label getLabel() {
if (this.label == null) {
this.label = new Label("Word: ");
}
return this.label;
}
protected Label getOutputLabel() {
if (this.outputLabel == null) {
this.outputLabel = new Label();
}
return this.outputLabel;
}
protected TextBox getTextBox() {
if (this.textBox == null) {
this.textBox = new TextBox();
this.textBox.setVisibleLength(20);
}
return this.textBox;
}
}
文章來源于領測軟件測試網 http://www.anti-gravitydesign.com/
