给自定义Dialog加入保留对话框值的功能
有的时候我们需要这样的功能，记下Dialog中的值，当再次打开这个Dialog的时候，还原这些值。这就需要把这些Dialog的值保存起来。Dialog的IDialogSettings类提供了这个功能。下边是使用方法:在上例"自定义Dialog"的代码上加入三个函数：
public
void
saveState()
{
if (text.getText() == null || text.getText().equals("")){
return ;
} IDialogSettings topSettings = getTopSettings(); IDialogSettings settings = topSettings.getSection("TestDialog"); if(settings == null)settings = topSettings.addNewSection("TestDialog"); settings.put("value", text.getText()); try{ topSettings.save("content/system.xml"); }catch(IOException e){ System.out.println(e.getMessage()); }
}
public
void
restoreState()
{ IDialogSettings topSettings = getTopSettings(); IDialogSettings settings = topSettings.getSection("TestDialog"); if(settings == null) return; if (text.getText() == null || text.getText().equals("")){ text.setText(settings.get("value")); } }
public
IDialogSettings getTopSettings()
{ IDialogSettings topSettings = new DialogSettings("system"); try{ topSettings.load("content/system.xml"); }catch(IOException e){ System.out.println(e.getMessage()); } return topSettings; }
然后在覆写的buttonPressed函数中调用save
protected
void
buttonPressed(
int
button)
{ saveState(); }
protected
Control createDialogArea(Composite parent)
{ Composite container = (Composite) super.createDialogArea(parent); container.setLayout(new RowLayout()); text = new Text(container, SWT.BORDER); text.setLayoutData(new RowData(100,-1)); //加入这一句 if (text.getText() == null || text.getText().equals("")){ restoreState(); } return container; }
运行一下看看吧，是不是记住了上次填入的内容.
本文转自kenty博客园博客，原文链接http://www.cnblogs.com/kentyshang/archive/2007/08/16/858307.html如需转载请自行联系原作者
kenty
