Groovy笔记(10)_Swing界面
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构造器 ? ? 1、可以生成XML/HTML/SWING等嵌套树状数据结构 2、在语法级别上实现GOF的Builder设计模式?
? MarkupBuilder Demo ? 1、Demo import groovy.xml.* //创建生成器 def page = new MarkupBuilder() //使用伪方法html/head等,参数是闭包 page.html{ ?? head{title 'Hello'} ?? body{ ????? ul{ ?????????? for(count in 1..3){ ??????????????? li "clat $count" ???????????}? ?????? } ?? } } ? ? SwingBuilder构造GUI ? 1、Demo import groovy.swing.SwingBuilder import javax.swing.* //创建生成器 def sb = new SwingBuilder() //使用伪方法产生界面 def frame = sb.frame(title:'ToyStore',location:[100,100], ????????????????????????????????? size:[400,300],defaultCloSEOperation: ??????????????????????????????????? WindowConstants.EXIT_ON_CLOSE){ ??????????????????????????????????????? ?label(text:"Hello world")?????????//?修改此行重构?,在frame中建立了一个标签 ??????????????????? } frame.pach() frame.setVisible(true) //Swing 的伪方法改为大写，再在前面加上J，就是相应组件了 ? 1、更好的组织代码 def sb = new SwingBuilder() def mainPanel = { ??? sb.panel(layout:new GridLayout(2,2,5,5)){ ??????? label(text:'Last name:',horizontalAlignment : JLabel.RIGHT) //右对齐 ????????? textField(text:'',columns:10) //输入框 ??????? label(text:'First name:',horizontalAlignment: JLabel.RIGHT) ????????? textField(text:'',columns:10) ??? } } def frame = sb.frame(title:'ToysStore',location :[100, ???????????????????????????????????size:[400,defaultCloSEOperation:WindowConstants.EXIT_ON_CLOSE){ ???????????????????????????????????????? mainPanel()????? //调用闭包 ??????????????????????????????? } frame.pack() frame.setVisible(true) ? ? 布局与事件处理 ? 1、 def buttonPanel = { ??? sb.panel(constraints : BorderLayout.SOUTH){ ????????? button(text:'OK',actionPerformed:{ println 'OK pressed'}) ????????? button(text:'Cancel',actionPerformed:{println 'Cancel pressed'}) ??? }???? } def mainPanel ={ ?? sb.panel(layout : new BorderLayout()){ ????? label(text:'Is this OK?',horizontalAlignment : JLabel.CENTER, ????????????? constraints : BorderLayout.CENTER) ??????? buttonPanel()?? ???} } def frame = sb.frame(title:'ToysStore',location:[100,size:[400, ????????????????????????????????? defaultCloSEOperation: WindowConstants.EXIT_ON_CLOSE){mainPanel()} frame.pack(); frame.setVisible(true) ? ? ? BoxLayout ? 1、建立4个横向排列的按钮 import groovy.swing.SwingBuidler import javax.swing.* import java.awt.* class FixedButton extends JButton{ // 使按钮大小固定 ??? Dimension getMinimumSize(){return BUTTONSIZE} ??? Dimension getMaximunSize(){return BUTTONSIZE} ??? Dimension getPreferredSize(){return BUTTONSIZE} ??? private static final BUTTONSIZE = new Dimension(80,30) } def sb = new SwingBuilder() def mainPanel = { ?? sb.panel(layout:new BorderLayout()){ ???? hbox(constraints: BorderLayout.WEST){ // hbox可以换成vbox,变成纵向排列 ???????? def buttons = ['One','Two','Three','Four'] ?????????buttons.each{but -> sb.widget(new FixedButton(text: but))} ???? } ?? } } } def frame = sb.frame(title: 'Example 10',300] ???????????????????????????????????,defaultCloSEOperation: WindowConstants.EXIT_ON_CLOSE){mainPanel()} frame.pack() ; frame.setVisible(true) ? ? ? JList/JScrollPane ? 1、selection import groovy.swint.SwingBuilder import javax.swing.* import java.awt.* class ToyListModel extends DefaultListModel{ ??? ToyListModel(list){ super() ????list.each{item -> this.addElement(item)}?? // 列表添加到模型中 }} def sb = new SwingBuilder() def listPanel={ ???? sb.panel(constraints: BorderLayout.CENTER){ ????????? scrollPane(){? // 加入滚动条 ????????????????def toyList = ['toy1','toy2','toy3','toy4'] ????????????????toysList = list(model : new ToyListModel(toylist),????? //定义列表 ??????????????????????????????selectionMode: ListSelectionModel.SINGLE_SELECTION, ??????????????????????????????selectedIndex: 0,visbleRowCount:4) ?????????? } ?????} } ? ? 2、 def mainPanel = { ?? sb.panel(layout: new BorderLayout()){ ?????? listPanel() ?? } } def fram = sb.frame(title : 'ToyStore', ??????????????????????????????? size:[400,defaultCloSEOperation:WindowConstants.EXIT_ONT_CLOSE){ ?????????????????????????????????? mainPanel() } ? ? ? JTable/JScrollPane ? 1、表格 import ....同上 import java.swing.table.* ? def sb = new SwingBuilder() def tablePanel?= { ???? sb.panel(constrains: BorderLayout.CENTER){ ??? ?? scrollPane(){ ?????????? table(selectionMode: ListSelectionModel.SINGLE_SELECTION){ ????????????????def toysList = [[toyName:'toy1',unitPrice: '100'], ????????????????????????????????????????[toyName :'toy2',unitPrice:'200']] ????????????????tableModel(list:toysList){ ???????????????????? closureColumn(header: 'Toy Name',read :{row ->return row.toyName})? //指定列 ???????????????????? closureColumn(header: 'Unit Price',read:{row -> return row.unitPrice})) ??????????????? } ?????????? } ???? ??} } } 2、然后可以像上面一样，添加Jframe框架 。 （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |