本文介绍了一个使用Jigloo插件开发的SWT文件阅读工具，包括文件读写、打开、编辑和保存功能。
这次采用的是SWT开发的，利用了Jigloo插件
知识点：
1.FileDialog
2.文件的读写
package chapter01.sample02;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
import com.cloudgarden.resource.SWTResourceManager;
/**
* This code was edited or generated using CloudGarden's Jigloo
* SWT/Swing GUI Builder, which is free for non-commercial
* use. If Jigloo is being used commercially (ie, by a corporation,
* company or business for any purpose whatever) then you
* should purchase a license for each developer using Jigloo.
* Please visit www.cloudgarden.com for details.
* Use of Jigloo implies acceptance of these licensing terms.
* A COMMERCIAL LICENSE HAS NOT BEEN PURCHASED FOR
* THIS MACHINE, SO JIGLOO OR THIS CODE CANNOT BE USED
* LEGALLY FOR ANY CORPORATE OR COMMERCIAL PURPOSE.
*/
public class FileReaderTool extends org.eclipse.swt.widgets.Composite {
private Menu menu1;
private Text text_file;
private ToolItem toolItem_save;
private ToolItem toolItem_edit;
private ToolItem toolItem_open;
private ToolBar toolBar1;
private MenuItem aboutMenuItem;
private MenuItem contentsMenuItem;
private Menu helpMenu;
private MenuItem helpMenuItem;
private MenuItem exitMenuItem;
private MenuItem closeFileMenuItem;
private MenuItem saveFileMenuItem;
private MenuItem newFileMenuItem;
private MenuItem openFileMenuItem;
private Menu fileMenu;
private MenuItem fileMenuItem;
{
//Register as a resource user - SWTResourceManager will
//handle the obtaining and disposing of resources
SWTResourceManager.registerResourceUser(this);
}
public FileReaderTool(Composite parent, int style) {
super(parent, style);
initGUI();
}
/**
* Initializes the GUI.
*/
private void initGUI() {
try {
this.setSize(new org.eclipse.swt.graphics.Point(400,300));
this.setBackground(SWTResourceManager.getColor(192, 192, 192));
FormLayout thisLayout = new FormLayout();
this.setLayout(thisLayout);
this.setBackgroundImage(SWTResourceManager.getImage("img/jpg/8.jpg"));
{
text_file = new Text(this, SWT.MULTI | SWT.WRAP | SWT.V_SCROLL);
FormData text_fileLData = new FormData();
text_fileLData.width = 378;
text_fileLData.height = 257;
text_fileLData.left = new FormAttachment(0, 1000, 0);
text_fileLData.top = new FormAttachment(0, 1000, 43);
text_fileLData.right = new FormAttachment(1000, 1000, 0);
text_fileLData.bottom = new FormAttachment(1000, 1000, 0);
text_file.setLayoutData(text_fileLData);
text_file.setVisible(false);
}
{
toolBar1 = new ToolBar(this, SWT.HORIZONTAL | SWT.H_SCROLL);
FormData toolBar1LData = new FormData();
toolBar1LData.width = 400;
toolBar1LData.height = 43;
toolBar1LData.left = new FormAttachment(0, 1000, 0);
toolBar1LData.top = new FormAttachment(0, 1000, 0);
toolBar1LData.right = new FormAttachment(1000, 1000, 0);
toolBar1.setLayoutData(toolBar1LData);
{
toolItem_open = new ToolItem(toolBar1, SWT.NONE);
toolItem_open.setImage(SWTResourceManager.getImage("img/png/New Document.png"));
toolItem_open.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent evt) {
toolItem_openWidgetSelected(evt);
}
});
}
{
toolItem_edit = new ToolItem(toolBar1, SWT.NONE);
toolItem_edit.setImage(SWTResourceManager.getImage("img/png/Write Document.png"));
toolItem_edit.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent evt) {
toolItem_editWidgetSelected(evt);
}
});
}
{
toolItem_save = new ToolItem(toolBar1, SWT.NONE);
toolItem_save.setImage(SWTResourceManager.getImage("img/png/Web Browser.png"));
toolItem_save.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent evt) {
toolItem_saveWidgetSelected(evt);
}
});
}
}
{
menu1 = new Menu(getShell(), SWT.BAR);
getShell().setMenuBar(menu1);
{
fileMenuItem = new MenuItem(menu1, SWT.CASCADE);
fileMenuItem.setText("File");
{
fileMenu = new Menu(fileMenuItem);
{
openFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
openFileMenuItem.setText("Open");
}
{
newFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
newFileMenuItem.setText("New");
}
{
saveFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
saveFileMenuItem.setText("Save");
}
{
closeFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
closeFileMenuItem.setText("Close");
}
{
exitMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
exitMenuItem.setText("Exit");
}
fileMenuItem.setMenu(fileMenu);
}
}
{
helpMenuItem = new MenuItem(menu1, SWT.CASCADE);
helpMenuItem.setText("Help");
{
helpMenu = new Menu(helpMenuItem);
{
contentsMenuItem = new MenuItem(helpMenu, SWT.CASCADE);
contentsMenuItem.setText("Contents");
}
{
aboutMenuItem = new MenuItem(helpMenu, SWT.CASCADE);
aboutMenuItem.setText("About");
}
helpMenuItem.setMenu(helpMenu);
}
}
}
this.layout();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Auto-generated main method to display this
* org.eclipse.swt.widgets.Composite inside a new Shell.
*/
public static void main(String[] args) {
Display display = Display.getDefault();
Shell shell = new Shell(display,SWT.SHELL_TRIM);
FileReaderTool inst = new FileReaderTool(shell, SWT.NULL);
Point size = inst.getSize();
shell.setLayout(new FillLayout());
shell.setImage(SWTResourceManager.getImage("img/ico/Bookmark.ico"));
shell.setText("\u6587\u672c\u9605\u8bfb\u5668");
shell.layout();
if(size.x == 0 && size.y == 0) {
inst.pack();
shell.pack();
} else {
Rectangle shellBounds = shell.computeTrim(0, 0, size.x, size.y);
shell.setSize(shellBounds.width, shellBounds.height);
}
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
}
private void toolItem_editWidgetSelected(SelectionEvent evt) {
FileDialog fileDialog = new FileDialog(getShell(), SWT.OPEN);
fileDialog.setText("Choose a file to read!");
String[] fileFilters = new String[]{"*.txt","*.java","*.doc"};
fileDialog.setFilterExtensions(fileFilters);
String select = fileDialog.open();
System.out.println(select);
StringBuffer sBuffer = new StringBuffer();
try {
FileReader fileReader = new FileReader(select);
BufferedReader bufferedReader = new BufferedReader(fileReader);
String string = bufferedReader.readLine();
while(string!=null){
sBuffer.append(string+"\n");
string = bufferedReader.readLine();
}
bufferedReader.close();
fileReader.close();
} catch (Exception e) {
e.printStackTrace();
}
text_file.setText(sBuffer.toString());
text_file.setVisible(true);
}
private void toolItem_openWidgetSelected(SelectionEvent evt) {
text_file.setVisible(true);
}
private void toolItem_saveWidgetSelected(SelectionEvent evt) {
String text = text_file.getText();
System.out.println(text);
FileDialog fileDialog = new FileDialog(getShell(), SWT.SAVE);
String[] fileFilters = new String[]{"*.txt","*.java","*.doc"};
fileDialog.setFilterExtensions(fileFilters);
fileDialog.setText("Save a path to save the file");
String selected = fileDialog.open( );
System.out.println(selected);
try {
FileWriter fileWriter = new FileWriter(selected);
BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
bufferedWriter.write(text);
bufferedWriter.close();
fileWriter.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
界面显示：
程序启动：
读取文件：
保存文件：
保存后的文件：
扫一扫
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
