cipheraction.java

mywork是rcp开发的很好的例子

package net.sf.pim.action;

import net.sf.util.CipherUtil;
import net.sf.util.StringUtil;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;


/**
 * @author levin
 * 2007-02-19 
 */
public class CipherAction extends UiAction {
	public CipherAction() {
        super();
        name = "加密工具...";
        gif = "position.gif";
    }

    public void run() {
    	super.run();
    	TitleAreaDialog dialog=new CipherDialog(parent.getTv().getControl().getShell());
    	dialog.open();
    }
    
    
    class CipherDialog extends TitleAreaDialog {
		private Text plain;
		private Text cipher;

		private CipherDialog(Shell parentShell) {
			super(parentShell);
		}
		@Override
		protected Control createContents(Composite parent) {
			Control control = super.createContents(parent);
	    	setTitle("加密工具");
	    	setMessage("请输入明文，然后执行加密，再将密文拷贝至配置项的输入框中");
			return control;
		}
		
		@Override
		protected Point getInitialSize() {
			return new Point(320,240);
		}

		@Override
		protected Control createDialogArea(Composite parent) {
			Composite control=(Composite) super.createDialogArea(parent);
			Composite composite=new Composite(control,SWT.NULL);
			GridLayout layout = new GridLayout();
			layout.marginHeight = 0;
			layout.marginWidth = 0;
			layout.verticalSpacing = 2;
			layout.horizontalSpacing = 2;
			layout.numColumns=2;
			composite.setLayout(layout);
			composite.setLayoutData(new GridData(GridData.FILL_BOTH));
			Label label=new Label(composite,SWT.NULL);
			label.setText("明文:");
			plain =new Text(composite,SWT.WRAP);
			plain.setLayoutData(new GridData(GridData.FILL_BOTH));
			label=new Label(composite,SWT.NULL);
			label.setText("密文:");
			cipher =new Text(composite,SWT.WRAP);
			cipher.setLayoutData(new GridData(GridData.FILL_BOTH));
			composite.setFont(parent.getFont());

			return control;
		}

		@Override
		protected void createButtonsForButtonBar(Composite parent) {
			Button cipherButton=createButton(parent, IDialogConstants.CLIENT_ID+1, "加密",true);
			cipherButton.addSelectionListener(new SelectionAdapter(){
				@Override
				public void widgetSelected(SelectionEvent e) {
					if(StringUtil.isNull(plain.getText()))return ;
					cipher.setText(CipherUtil.PREFIX+CipherUtil.Encrypt(plain.getText())+CipherUtil.SUFIX);
				}});
			Button copyButton=createButton(parent,IDialogConstants.CLIENT_ID+2,"拷贝",false);
			copyButton.addSelectionListener(new SelectionAdapter(){
				@Override
				public void widgetSelected(SelectionEvent e) {
					if(StringUtil.isNull(cipher.getText()))return ;
					Object[] data = new Object[] { cipher.getText() };
					Transfer[] transferTypes = new Transfer[] { TextTransfer.getInstance() };
					new Clipboard(CipherDialog.this.getShell().getDisplay()).setContents(data, transferTypes);
				}				
			});
			createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL,false);
		}
	}
}