RFTEditor总结续篇
FuqiangWang
2014年从msn space存档中重新恢复出来！
实际上，这些都是demo部分的代码，要使用还需雕琢，只是更好的提供相关文档。部分代码是直接摘自他人文章，在此声明，如有引用，请以尊重原作者为前提，谢谢！
接上回：
【1】文件保存以及打开等功能在demo中的代码演示，部分参考在sun提供的demo：
private void saveFileAs(ActionEvent ae)
{
CustomFileFilter filter = new CustomFileFilter();
chooser.addChoosableFileFilter(filter);
currentFile = new File(".";
int option = chooser.showSaveDialog(this);
if(option == JFileChooser.APPROVE_OPTION)
{
File file = chooser.getSelectedFile();
FileOutputStream fos = null;
try {
if (file.exists())
{
if (JOptionPane.showConfirmDialog(this, "要覆盖原文件嘛？","文件覆盖确认",JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION)
{
currentFile = file;
fos = new FileOutputStream(currentFile);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(editor.getDocument());
oos.flush();
oos.close();
}
}
else
{
currentFile = new File(file.getAbsolutePath());
fos = new FileOutputStream(currentFile);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(editor.getDocument());
oos.flush();
oos.close();
// //javax.swing.text.rtf.RTFEditorKit kit =(RTFEditorKit)editor.getEditorKit();
// editor.getDocument().putProperty( DefaultEditorKit.EndOfLineStringProperty, "\r\n" ;
// kit.write(fos,doc,0,doc.getLength());
// fos.flush();
// fos.close();
}
}
catch (Exception ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(this, "文件保存失败！", "文件保存失败！",
JOptionPane.WARNING_MESSAGE, null);
}
..............
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注释掉的部分是RTFEditorKit的实现，因为不能满足要求，所以注释掉了，在前面已经说过。
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void saveButton_actionPerformed(ActionEvent e) {
if(currentFile!=null)
{
FileOutputStream fos = null;
try {
fos = new FileOutputStream(currentFile);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(editor.getDocument());
oos.flush();
oos.close();
}catch(Exception ex)
{
ex.printStackTrace();
JOptionPane.showMessageDialog(this,"文件保存失败！","文件保存失败！",JOptionPane.WARNING_MESSAGE);
}
}
else
{
saveFileAs(e);
}
}
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void openButton_actionPerformed(ActionEvent e) {
CustomFileFilter filter = new CustomFileFilter();
chooser.addChoosableFileFilter(filter);
int option = chooser.showOpenDialog(this);
if(option == JFileChooser.APPROVE_OPTION)
{
File file = chooser.getSelectedFile();
if (file != null) {
FileInputStream fis = null;
currentFile = new File(file.getAbsolutePath());
try {
fis = new FileInputStream(currentFile);
ObjectInputStream ois = new ObjectInputStream(fis);
editor.setStyledDocument( (StyledDocument) ois.readObject());
ois.close();
validate();
// //RTFEditorKit kit = (RTFEditorKit)editor.getEditorKit();
// editor.getDocument().putProperty( DefaultEditorKit.EndOfLineStringProperty, "\n" ;
//
// doc = new DefaultStyledDocument(content);
// kit.read(fis,doc,0);
// editor.setDocument(doc);
// fis.close();
}
catch (Exception exp) {
exp.printStackTrace();
JOptionPane.showMessageDialog(this, "文件打开失败！", "文件打开失败！",
JOptionPane.WARNING_MESSAGE, null);
}
finally
{
if(fis!=null)
{
try{fis.close();}catch(IOException ie){}
}
if(chooser.getChoosableFileFilters()!=null)
{
chooser.removeChoosableFileFilter(filter);
}
}
}
}
chooser.removeChoosableFileFilter(filter);
}
以上是文件保存等操作的demo代码片断，仅供参考。
【2】搜索内容的亮显功能，使用Highlighter类实现，代码摘自别人，特此声明，非出自本人之手，惭愧，呵呵，实在没有时间，所以，直接拖过来做investigation只用。
void searchButton_actionPerformed(ActionEvent e) {
//Search Function implementation here!
String inputValue = JOptionPane.showInputDialog(this,"请输入欲查找的字符串！";
if(inputValue==null)
return;
highlight(editor, inputValue);
}
public void highlight(JTextComponent textComp, String pattern) {
// First remove all old highlights
removeHighlights(textComp);
try {
Highlighter hilite = textComp.getHighlighter();
Document doc = textComp.getDocument();
String text = doc.getText(0, doc.getLength());
int pos = 0;
// Search for pattern
while ( (pos = text.indexOf(pattern, pos)) >= 0) {
// Create highlighter using private painter and apply around pattern
hilite.addHighlight(pos, pos + pattern.length(),
myHighlightPainter);
pos += pattern.length();
}
}
catch (BadLocationException e) {
}
}
public void removeHighlights(JTextComponent textComp) {
Highlighter hilite = textComp.getHighlighter();
Highlighter.Highlight[] hilites = hilite.getHighlights();
for (int i = 0; i < hilites.length; i++) {
if (hilites[i].getPainter() instanceof MyHighlightPainter) {
hilite.removeHighlight(hilites[i]);
}
}
}
// An instance of the private subclass of the default highlight painter
Highlighter.HighlightPainter myHighlightPainter = new MyHighlightPainter(
Color.red);
JButton colorButton = new JButton();
TitledBorder titledBorder38;
// A private subclass of the default highlight painter
class MyHighlightPainter
extends DefaultHighlighter.DefaultHighlightPainter {
public MyHighlightPainter(Color color) {
super(color);
}
}
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差不多了吧，部分像实现fileFilter等功能就不写了，参考sun的文档吧。
该转入后台数据持续层的调研了..............so 忙，
开天窗，拉认知，订阅「福报」，即刻拥有自己的全模态人工智能。
