texteditorexample.java

eclips swt jface 第四部分实例篇

/**
 *@author: WangJinTao,MengQingChang2006
 */
package swtjfaceExample;

import java.io.*;
import java.net.*;
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.jface.action.*;
import org.eclipse.jface.resource.*;
import org.eclipse.jface.window.*;

public class TextEditorExample extends ApplicationWindow {
	private StyledText text;

	private Action newCreate;

	private Action openFile;

	private Action saveFile;

	private Action saveAsFile;

	private Action exit;

	private Action copyFile;

	private Action pasteFile;

	private Action cutFile;

	private Action setFont;

	private Action setColor;

	private Action selectAll;

	private Action formate;

	private Action about;

	private Font font;

	private File file;

	private Color color;

	private StyleRange style, range;

	boolean changes;;

	TextEditorExample() {
		// 部署窗口
		super(null);
		newCreate = new NewCreateAction();
		openFile = new OpenFileAction();
		saveFile = new SaveFileAction();
		saveAsFile = new SaveAsFileAction();
		exit = new ExitAction();
		copyFile = new CopyFileAction();
		pasteFile = new PasteFileAction();
		cutFile = new CutFileAction();
		setFont = new SetFontAction();
		setColor = new SetColorAction();
		selectAll = new SelectAllAction();
		formate = new FormateAction();
		about = new AboutAction();

		addMenuBar();
		addToolBar(SWT.FLAT);
	}

	public void run() {
		setBlockOnOpen(true);
		open();
		Display.getCurrent().dispose();
	}

	public Control createContents(Composite parent) {
		// 设置窗体大小
		parent.getShell().setSize(520, 370);
		// 设置窗体标题
		parent.getShell().setText("TextEditor实例");
		Composite composite = new Composite(parent, SWT.NONE);
		composite.setLayout(new GridLayout(1, true));
		text = new StyledText(composite, SWT.BORDER | SWT.V_SCROLL
				| SWT.H_SCROLL);
		text.setLayoutData(new GridData(GridData.FILL_BOTH));
		text.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				changes = true;
			}
		});
		return composite;
	}

	protected MenuManager createMenuManager() {
		MenuManager menuBar = new MenuManager();
		MenuManager fileMenu = new MenuManager("文件(&F)");
		MenuManager editorMenu = new MenuManager("编辑(&E)");
		MenuManager helpMenu = new MenuManager("帮助(&H)");
		// 在文件菜单项添加下拉菜单
		fileMenu.add(newCreate);
		fileMenu.add(openFile);
		fileMenu.add(new Separator());
		fileMenu.add(saveFile);
		fileMenu.add(saveAsFile);
		fileMenu.add(new Separator());
		fileMenu.add(exit);
		// 在编辑菜单下添加下拉菜单
		editorMenu.add(copyFile);
		editorMenu.add(pasteFile);
		editorMenu.add(cutFile);
		editorMenu.add(new Separator());
		editorMenu.add(setFont);
		editorMenu.add(setColor);
		editorMenu.add(new Separator());
		editorMenu.add(selectAll);
		editorMenu.add(formate);
		helpMenu.add(about);
		// 在menuBar上添加文件菜单、编辑菜单和帮助菜单
		menuBar.add(fileMenu);
		menuBar.add(editorMenu);
		menuBar.add(helpMenu);
		return menuBar;
	}

	// 在工具栏上添加工具栏按钮
	protected ToolBarManager createToolBarManager(int style) {
		ToolBarManager toolBarManager = new ToolBarManager(style);
		toolBarManager.add(new NewCreateAction());
		toolBarManager.add(new OpenFileAction());
		toolBarManager.add(new SaveFileAction());
		toolBarManager.add(new Separator());
		toolBarManager.add(new CopyFileAction());
		toolBarManager.add(new PasteFileAction());
		toolBarManager.add(new CutFileAction());
		toolBarManager.add(new Separator());
		toolBarManager.add(new BlodAction());
		toolBarManager.add(new ItalicAction());
		toolBarManager.add(new UnderlineAction());
		return toolBarManager;
	}

	class NewCreateAction extends Action {
		public NewCreateAction() {
			super("NewCreateAction@Ctrl+N", Action.AS_PUSH_BUTTON);
			setText("新建");
			try {
				// 载入图像
				ImageDescriptor icon = ImageDescriptor.createFromURL(new URL(
						"file:icons/new.gif"));
				setImageDescriptor(icon);
			} catch (MalformedURLException e) {
				System.err.println(e.getMessage());
			}
		}

		public void run() {
			// 在新建文本之前，判断当前文本是否需要保存
			if (judgeTextSave()) {
				text.setText("");
			}
		}
	}

	class OpenFileAction extends Action {
		public OpenFileAction() {
			super("OpenFileAction@Ctrl+O", Action.AS_PUSH_BUTTON);
			setText("打开");
			try {
				// 载入图像
				ImageDescriptor icon = ImageDescriptor.createFromURL(new URL(
						"file:icons/open.gif"));
				setImageDescriptor(icon);
			} catch (MalformedURLException e) {
				System.err.println(e.getMessage());
			}
		}

		public void run() {
			// 在打开新的文件之前，判断是否保存当前文件
			if (judgeTextSave())
				OpenTextFile();
		}
	}

	class SaveFileAction extends Action {
		public SaveFileAction() {
			super("SaveFileAction@Ctrl+S", Action.AS_PUSH_BUTTON);
			setText("保存");
			try {
				// 载入图像
				ImageDescriptor icon = ImageDescriptor.createFromURL(new URL(
						"file:icons/save.gif"));
				setImageDescriptor(icon);
			} catch (MalformedURLException e) {
				System.err.println(e.getMessage());
			}
		}

		public void run() {
			saveTextFile();
		}
	}

	class SaveAsFileAction extends Action {
		public SaveAsFileAction() {
			super("另存为@Ctrl+A", Action.AS_PUSH_BUTTON);
		}

		public void run() {
			saveFileAs();
		}
	}

	class ExitAction extends Action {
		public ExitAction() {
			super("退出@Ctrl+E", Action.AS_PUSH_BUTTON);
		}

		public void run() {
			getShell().dispose();
		}
	}

	class CopyFileAction extends Action {
		public CopyFileAction() {
			super("CopyFileAction@Ctrl+C", Action.AS_PUSH_BUTTON);
			setText("复制");
			try {
				// 载入图像
				ImageDescriptor icon = ImageDescriptor.createFromURL(new URL(
						"file:icons/copy.gif"));
				setImageDescriptor(icon);
			} catch (MalformedURLException e) {
				System.err.println(e.getMessage());
			}
		}

		public void run() {
			text.copy();
		}
	}

	class PasteFileAction extends Action {
		public PasteFileAction() {
			super("PasteFileAction@Ctrl+V", Action.AS_PUSH_BUTTON);
			setText("粘贴");
			try {
				// 载入图像
				ImageDescriptor icon = ImageDescriptor.createFromURL(new URL(
						"file:icons/paste.gif"));
				setImageDescriptor(icon);
			} catch (MalformedURLException e) {
				System.err.println(e.getMessage());
			}
		}

		public void run() {
			text.paste();
		}
	}

	class CutFileAction extends Action {
		public CutFileAction() {
			super("CutFileAction @Ctrl+X", Action.AS_PUSH_BUTTON);
			setText("剪切");
			try {
				// 载入图像
				ImageDescriptor icon = ImageDescriptor.createFromURL(new URL(
						"file:icons/cut.gif"));
				setImageDescriptor(icon);
			} catch (MalformedURLException e) {
				System.err.println(e.getMessage());
			}
		}

		public void run() {
			 text.cut();
		 
		}
	}

	class SetFontAction extends Action {
		public SetFontAction() {
			super("设置字体@Alt+F", Action.AS_PUSH_BUTTON);
		}

		public void run() {
			FontDialog fontDialog = new FontDialog(getShell());
			fontDialog.setFontList((text.getFont()).getFontData());
			FontData fontData = fontDialog.open();

			if (fontData != null) {
				if (font != null) {
					font.dispose();
				}
				font = new Font(getShell().getDisplay(), fontData);
				text.setFont(font);

			}
		}
	}

	class SetColorAction extends Action {
		public SetColorAction() {
			super("设置颜色@Alt+C", Action.AS_PUSH_BUTTON);
		}

		public void run() {
			// 定义颜色选择对话框
			ColorDialog dlg = new ColorDialog(getShell());
			// 打开对话框
			RGB rgb = dlg.open();
			if (rgb != null) {
				// 定义color对象
				color = new Color(getShell().getDisplay(), rgb);
				// 定义point对象，获取选择范围。