makeassociationswizardpage.java

mywork是rcp开发的很好的例子

package net.sf.pim.contract.wizard;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.HashMap;
import java.util.Map;

import net.sf.pim.contract.Contract;
import net.sf.util.StringUtil;

import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;

public class MakeAssociationsWizardPage extends WizardPage {

	private Map<String,CCombo> uiMap;
	
	public MakeAssociationsWizardPage(String pageName) {
		super(pageName);
		setTitle("设定关联");
		setDescription("设置要导入的字段对应关系");
	}	
	
	public void createControl(Composite parent) {
        Composite composite=new Composite(parent,SWT.NULL);
        GridLayout gl=new GridLayout();
        gl.numColumns=2;
        composite.setLayout(gl);

        GridData gd=new GridData();
        gd.grabExcessHorizontalSpace=true;
        gd.minimumWidth=120;
        
        Contract contract = new Contract();
		String[] fieldDescs=contract.getFieldDescs();
        final String[] fieldNames=contract.getFieldNames();
        
        uiMap=new HashMap<String, CCombo>();
        final Map<String,Integer> map=((CSVWizard)this.getWizard()).getAssociations();
       
        for(int i=0;i<fieldNames.length;i++){
        	Label label=new Label(composite,SWT.NULL);
        	label.setText(fieldDescs[i]);
        	
			final CCombo combo = new CCombo(composite,SWT.FLAT|SWT.READ_ONLY);
			combo.setLayoutData(gd);
			combo.setData(i);
			combo.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
			combo.addSelectionListener(new SelectionListener(){
				public void widgetDefaultSelected(SelectionEvent e) {
				}

				public void widgetSelected(SelectionEvent e) {
					map.put(fieldNames[(Integer) combo.getData()],combo.getSelectionIndex());
				}
				
			});
			uiMap.put(fieldNames[i], combo);
        }
        setControl(composite);
	}



	//取csv的第一行作为元数据，不考虑字段中含逗号
	private String[] getCSVFieldNames(){
		String[] ss=new String[0];
		String fileName=((CSVWizard)this.getWizard()).getFileName();
		if(fileName ==null || fileName.length() == 0)
			return ss;
		
		try {
			BufferedReader br=new BufferedReader(new FileReader(fileName));
			ss=StringUtil.toArray(br.readLine());
			br.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return ss;
	}
	
	public void onEnterPage(){
        String[] csvHeaders=getCSVFieldNames();
		for(CCombo combo:uiMap.values()){
			combo.setItems(csvHeaders);
			combo.add("", 0);
			combo.setVisibleItemCount(csvHeaders.length+1);
		}
	}
}