DecoratedField用來(lái)實(shí)現對Control的裝飾，可以為button,combo,text等控件做出如下效果。
控件邊上提示的種類(lèi)有4種，分別是Proposal, Required, error, warning.
代碼很簡(jiǎn)單：package jface;
import org.eclipse.jface.fieldassist.DecoratedField;
import org.eclipse.jface.fieldassist.FieldDecoration;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.jface.fieldassist.IControlCreator;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
/** *//**
* This class demonstrates TableViewers
*/
public class FieldDecorationDemo ...{
public void run() ...{
Display display = new Display();
Shell shell = new Shell(display);
shell.setSize(200, 200);
shell.setText("Button Example");
shell.setLayout(new GridLayout());
createFieldDecoration(shell);
shell.open();
while (!shell.isDisposed()) ...{
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
private void createFieldDecoration(Shell shell) ...{
createCombo(shell);
createButton(shell);
createText(shell);
}
private void createText(Shell shell) ...{
IControlCreator cbCtrl = new IControlCreator() ...{
public Control createControl(final Composite parent, final int style) ...{
Text text = new Text(parent, style);
text.setText("text");
return text;
}
};
DecoratedField dField = new DecoratedField(shell, SWT.BORDER, cbCtrl);
FieldDecoration decoration = FieldDecorationRegistry.getDefault().getFieldDecoration(FieldDecorationRegistry.DEC_ERROR);
dField.addFieldDecoration(decoration, SWT.LEFT | SWT.TOP, false);
}
private void createButton(Shell shell) ...{
IControlCreator cbCtrl = new IControlCreator() ...{
public Control createControl(final Composite parent, final int style) ...{
Button button = new Button(parent, style);
button.setText("button");
return button;
}
};
DecoratedField dField = new DecoratedField(shell, SWT.BORDER, cbCtrl);
FieldDecoration decoration = FieldDecorationRegistry.getDefault().getFieldDecoration(
FieldDecorationRegistry.DEC_CONTENT_PROPOSAL);
dField.addFieldDecoration(decoration, SWT.LEFT | SWT.TOP, false);
}
private void createCombo(Shell shell) ...{
IControlCreator cbCtrl = new IControlCreator() ...{
public Control createControl(final Composite parent, final int style) ...{
Combo cb = new Combo(parent, style);
cb.setText("combo");
return cb;
}
};
DecoratedField dField = new DecoratedField(shell, SWT.BORDER, cbCtrl);
FieldDecoration decoration = FieldDecorationRegistry.getDefault()
.getFieldDecoration(FieldDecorationRegistry.DEC_REQUIRED);
dField.addFieldDecoration(decoration, SWT.RIGHT | SWT.TOP, false);
}
public static void main(String[] args) ...{
new FieldDecorationDemo().run();
}
}
