替代 SWT GridData 更简单有效的方法

随便看看JFace 的package ,发现了一个名字很有意思的类GridDataFactory，可以用来代替SWT中GridData的使用，而且特别方便。以下直接copy了源代码前面的说明，使用很简单，看一下就明白了。求知欲望更强烈的可以看一下它的源代码。

*//Example1:Typicalgriddataforanon-wrappinglabel
*
*//GridDataFactoryversion
*GridDataFactory.fillDefaults().applyTo(myLabel);
*
*//EquivalentSWTversion
*GridDatalabelData=newGridData(GridData.HORIZONTAL_ALIGN_FILL|GridData.VERTICAL_ALIGN_FILL);
*myLabel.setLayoutData(labelData);
*
*///////////////////////////////////////////////////////////
*//Example2:Typicalgriddataforawrappinglabel
*
*//GridDataFactoryversion
*GridDataFactory.fillDefaults()
*.align(SWT.FILL,SWT.CENTER)
*.hint(150,SWT.DEFAULT)
*.grab(true,false)
*.applyTo(wrappingLabel);
*
*//EquivalentSWTversion
*GridDatawrappingLabelData=newGridData(GridData.FILL_HORIZONTAL|GridData.VERTICAL_ALIGN_CENTER);
*wrappingLabelData.minimumWidth=1;
*wrappingLabelData.widthHint=150;
*wrappingLabel.setLayoutData(wrappingLabelData);
*
*//////////////////////////////////////////////////////////////
*//Example3:Typicalgriddataforascrollablecontrol(alistbox,tree,table,etc.)
*
*//GridDataFactoryversion
*GridDataFactory.fillDefaults().grab(true,true).hint(150,150).applyTo(listBox);
*
*//EquivalentSWTversion
*GridDatalistBoxData=newGridData(GridData.FILL_BOTH);
*listBoxData.widthHint=150;
*listBoxData.heightHint=150;
*listBoxData.minimumWidth=1;
*listBoxData.minimumHeight=1;
*listBox.setLayoutData(listBoxData);
*
*/////////////////////////////////////////////////////////////
*//Example4:Typicalgriddataforabutton
*
*//GridDataFactoryversion
*PointpreferredSize=button.computeSize(SWT.DEFAULT,SWT.DEFAULT,false);
*Pointhint=Geometry.max(LayoutConstants.getMinButtonSize(),preferredSize);
*GridDataFactory.fillDefaults().align(SWT.FILL,SWT.CENTER).hint(hint).applyTo(button);
*
*//EquivalentSWTversion
*PointpreferredSize=button.computeSize(SWT.DEFAULT,SWT.DEFAULT,false);
*Pointhint=Geometry.max(LayoutConstants.getMinButtonSize(),preferredSize);
*GridDatabuttonData=newGridData(GridData.HORIZONTAL_ALIGN_FILL|GridData.VERTICAL_ALIGN_CENTER);
*buttonData.widthHint=hint.x;
*buttonData.heightHint=hint.y;
*button.setLayoutData(buttonData);

类似的还有一个GridLayoutFactory。