advancedpreferencepage.java

一个学习eclipse插件开发的绝好入门程序

package com.sysdeo.eclipse.tomcat;

/*
 * (c) Copyright Sysdeo SA 2001, 2002.
 * All Rights Reserved.
 */

import org.eclipse.jface.preference.BooleanFieldEditor;
import org.eclipse.jface.preference.DirectoryFieldEditor;
import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.jface.preference.FileFieldEditor;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.preference.RadioGroupFieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

import com.sysdeo.eclipse.tomcat.editors.ProjectListEditor;


public class AdvancedPreferencePage extends PreferencePage implements IWorkbenchPreferencePage, TomcatPluginResources {

	private BooleanFieldEditor securityEditor;

	static final private int FIELD_WIDTH = 50;
	private RadioGroupFieldEditor version;
	private DirectoryFieldEditor home;
	private DirectoryFieldEditor base;	
	private FileFieldEditor configFile;
	private ProjectListEditor projectListEditor;
//	private ComboFieldEditor targetPerspectiveEditor;
	private ModifyListener fModifyListener;
		
	public AdvancedPreferencePage() {
		super();
		setPreferenceStore(TomcatLauncherPlugin.getDefault().getPreferenceStore());
	}

	/*
	 * @see PreferencePage#createContents(Composite)
	 */
	protected Control createContents(Composite parent) {
		Composite composite = new Composite(parent, SWT.NULL);
		composite.setLayout(new GridLayout(1, false));

		
		Group homeGroup = new Group(composite,SWT.NONE);
				
		base = new DirectoryFieldEditor(
				TomcatLauncherPlugin.TOMCAT_PREF_BASE_KEY,
				PREF_PAGE_BASE_LABEL,
				homeGroup);				
				
		initLayoutAndData(homeGroup, 3);	

		/* Since Eclipse version 3, plugin's target perspectives are the Java application ones. 
		 */

//		Group targetperspectiveGroup = new Group(composite,SWT.NONE);
//		String[][] perspectiveNamesAndIds = getPerspectiveNamesAndIds();
//		targetPerspectiveEditor = new ComboFieldEditor(
//			TomcatLauncherPlugin.TOMCAT_PREF_TARGETPERSPECTIVE,
//			PREF_PAGE_TARGETPERSPECTIVE_LABEL,
//			perspectiveNamesAndIds,
//			targetperspectiveGroup);				
//		initLayoutAndData(targetperspectiveGroup, 1);
//		this.initField(targetPerspectiveEditor);	
		
		Group securityGroup = new Group(composite,SWT.NONE);
		securityEditor = new BooleanFieldEditor(
			TomcatLauncherPlugin.TOMCAT_PREF_SECURITYMANAGER,
			PREF_PAGE_SECURITYMANAGER_LABEL,
			securityGroup);
		this.initField(securityEditor);		
		initLayoutAndData(securityGroup, 1);
						
		Group projectListGroup = new Group(composite,SWT.NONE);
		String[] excludedProjectsNature = {TomcatLauncherPlugin.NATURE_ID};	
		projectListEditor = new ProjectListEditor(excludedProjectsNature);
		projectListEditor.setLabel(PREF_PAGE_PROJECTINCP_LABEL);
		Control projectList = projectListEditor.getControl(projectListGroup);
		GridData gd2 = new GridData();
		gd2.horizontalAlignment = GridData.FILL;
		projectList.setLayoutData(gd2);
		initLayoutAndData(projectListGroup, 1);		

		this.initField(base);

		new Label(composite, SWT.NULL); //blank

		return composite;
	}

	/*
	 * @see IWorkbenchPreferencePage#init(IWorkbench)
	 */
	public void init(IWorkbench workbench) {
	}


	public boolean performOk() {	
		base.store();
//		targetPerspectiveEditor.store();
		securityEditor.store();
		TomcatLauncherPlugin.getDefault().setProjectsInCP(projectListEditor.getCheckedElements());
		TomcatLauncherPlugin.getDefault().savePluginPreferences();
		return true;	
	}
	
	private void initField(FieldEditor field) {
		field.setPreferenceStore(getPreferenceStore());
		field.setPreferencePage(this);
		field.load();		
	}
	
	
	private void initLayoutAndData(Group aGroup, int spanH, int spanV, int numColumns) {
		GridLayout gl = new GridLayout(numColumns, false);
		aGroup.setLayout(gl);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalSpan = spanH;
		gd.verticalSpan = spanV;
		aGroup.setLayoutData(gd);
	}

	private void initLayoutAndData(Group aGroup, int numColumns) {
		GridLayout gl = new GridLayout(numColumns, false);
		aGroup.setLayout(gl);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalSpan = 1;
		gd.widthHint = 400;
		aGroup.setLayoutData(gd);
	}
	
	/**
	 * From : org.eclipse.debug.internal.ui.preferences.DebugPreferencePage
	 * 
	 * Return a 2-dimensional array of perspective names and ids arranged as follows:
	 * { {persp1name, persp1id}, {persp2name, persp2id}, ... }
	 */
//	protected static String[][] getPerspectiveNamesAndIds() {
//		IPerspectiveRegistry reg = PlatformUI.getWorkbench().getPerspectiveRegistry();
//		IPerspectiveDescriptor[] persps = reg.getPerspectives();
//		
//		String[][] table = new String[persps.length + 1][2];
//		table[0][0] = PREF_PAGE_NONE_LABEL;
//		table[0][1] = IDebugUIConstants.PERSPECTIVE_NONE;
//		for (int i = 0; i < persps.length; i++) {
//			table[i + 1][0] = persps[i].getLabel();
//			table[i + 1][1] = persps[i].getId();
//		}
//		
//		return table;
//	}	
}