filemasterdetailsblock.java

基于JAVA RCP的应用, 在代码中可以学习到editor, view, perspective的使用, 和插件的配置管理

package com.fengmanfei.myrcp.forms.advance;

import java.io.File;

import myRCP.MyRCPPlugin;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.*;
import org.eclipse.ui.forms.*;
import org.eclipse.ui.forms.editor.FormPage;
import org.eclipse.ui.forms.widgets.*;

public class FileMasterDetailsBlock extends MasterDetailsBlock {
	private FormPage page;

	public FileMasterDetailsBlock(FormPage page) {
		this.page = page;
	}
	//父类中的抽象方法，创建Master部分
	protected void createMasterPart(final IManagedForm managedForm, Composite parent) {
		FormToolkit toolkit = managedForm.getToolkit();
		//创建一个内容区
		Section section = toolkit.createSection(parent, Section.DESCRIPTION | Section.TITLE_BAR);
		section.setText("浏览文件");
		section.marginWidth = 10;
		section.marginHeight = 5;
		//创建内容区的面板
		Composite client = toolkit.createComposite(section, SWT.WRAP);
		//绘制该面板的边框，与表单的风格一致
		toolkit.paintBordersFor(client);
		GridLayout layout = new GridLayout();
		layout.numColumns = 2;
		layout.marginWidth = 2;
		layout.marginHeight = 2;
		client.setLayout(layout);
		//创建一个树，使用toolkit对象创建
		Tree tree = toolkit.createTree(client, SWT.NULL);
		GridData gd = new GridData(GridData.FILL_BOTH);
		gd.heightHint = 20;
		gd.widthHint = 100;
		tree.setLayoutData(gd);
		/*
		 IFormPart管理了整个Part的dirty state, saving, commit, focus, selection changes等等这样的事件。
		 并不是表单中的每一个-空间站都需要成为一个IFormPart，最好将一组control通过实现IFormPart变成一个Part.
	     一般来说Section就是一个自然形成的组，所以Eclipse Form提供了一个SectionPart的实现，
	     它包含一个Section的对象。   
	    */
		final SectionPart spart = new SectionPart(section);
		//注册该对象到IManagedForm表单管理器中
		managedForm.addPart(spart);
		//将普通的树包装成MVC的树
		TreeViewer viewer = new TreeViewer(tree);
		//注册树的选择事件监听器
		viewer.addSelectionChangedListener(new ISelectionChangedListener() {
			//当单击树中某一个节点时
			public void selectionChanged(SelectionChangedEvent event) {
				//通过IManagedForm来发布IFormPart所对应的事件
				managedForm.fireSelectionChanged(spart, event.getSelection());
			}
		});
		//设置树的内容
		viewer.setContentProvider(new MasterContentProvider());
		//设置树的标签
		viewer.setLabelProvider(new MasterLabelProvider());
		//设置初始化输入的类
		viewer.setInput(new File("E:\\Program Files"));
	}
	//注册详细页面部分
	protected void registerPages(DetailsPart detailsPart) {
		//将DirectoryDetailPage对象注册
		detailsPart.registerPage(File.class, new DirectoryDetailPage());
	}
	//创建表单区的Action
	protected void createToolBarActions(IManagedForm managedForm) {
		final ScrolledForm form = managedForm.getForm();
		//水平布局操作
		Action hAction = new Action("horizon", Action.AS_RADIO_BUTTON) {
			public void run() {
				sashForm.setOrientation(SWT.HORIZONTAL);
				form.reflow(true);
			}
		};
		hAction.setChecked(true);
		hAction.setToolTipText("水平布局");
		hAction.setImageDescriptor(MyRCPPlugin.getImageDescriptor("icons/hor.gif"));
		//垂直布局操作
		Action vAction = new Action("vertical", Action.AS_RADIO_BUTTON) {
			public void run() {
				sashForm.setOrientation(SWT.VERTICAL);
				form.reflow(true);
			}
		};
		vAction.setChecked(false);
		vAction.setToolTipText("垂直布局"); //$NON-NLS-1$
		vAction.setImageDescriptor(MyRCPPlugin.getImageDescriptor("icons/ver.gif"));
		//将这两个操作添加到表单的工具栏管理器中
		form.getToolBarManager().add(hAction);
		form.getToolBarManager().add(vAction);
	}
	
	public class MasterContentProvider implements ITreeContentProvider {

		public Object[] getChildren(Object element) {
			return ((File) element).listFiles();
		}

		public Object[] getElements(Object element) {
			return ((File) element).listFiles();
		}

		public boolean hasChildren(Object element) {
			Object[] obj = getChildren(element);
			return obj == null ? false : obj.length > 0;
		}

		public Object getParent(Object element) {
			return ((File) element).getParentFile();
		}

		public void dispose() {
		}

		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
		}

	}

	class MasterLabelProvider implements ILabelProvider {

		public Image getImage(Object element) {
			File file = (File) element;
			if (file.isDirectory())
				return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
			else
				return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FILE);
		}

		public String getText(Object element) {
			String text = ((File) element).getName();
			if (text.length() == 0) {
				text = ((File) element).getPath();
			}
			return text;
		}

		public void addListener(ILabelProviderListener listener) {
		}

		public void dispose() {

		}

		public boolean isLabelProperty(Object element, String property) {
			return false;
		}

		public void removeListener(ILabelProviderListener listener) {
		}

	}

}