в 17:43, 31 мая 2010

2010-05-31T17:43:48Z

Admin: 1 версия

2010-05-31T14:12:05Z

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== AbstractDocument: getText(int offset, int length) ==



<source lang="java">
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.text.AttributeSet;
import javax.swing.text.Element;
import javax.swing.text.ElementIterator;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
public class MainClass {
public static void main(String args[]) throws Exception {
URL url = new URL("http://www.jexp.ru");
URLConnection connection = url.openConnection();
InputStream is = connection.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
HTMLEditorKit htmlKit = new HTMLEditorKit();
HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
HTMLEditorKit.Parser parser = new ParserDelegator();
HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
parser.parse(br, callback, true);
ElementIterator iterator = new ElementIterator(htmlDoc);
Element element;
while ((element = iterator.next()) != null) {
AttributeSet attributes = element.getAttributes();
Object name = attributes.getAttribute(StyleConstants.NameAttribute);
if ((name instanceof HTML.Tag) && (name == HTML.Tag.H1)) {
StringBuffer text = new StringBuffer();
int count = element.getElementCount();
for (int i = 0; i < count; i++) {
Element child = element.getElement(i);
AttributeSet childAttributes = child.getAttributes();
if (childAttributes.getAttribute(StyleConstants.NameAttribute) == HTML.Tag.CONTENT) {
int startOffset = child.getStartOffset();
int endOffset = child.getEndOffset();
int length = endOffset - startOffset;
text.append(htmlDoc.getText(startOffset, length));
}
}
System.out.println(name + ": " + text.toString());
}
}
}
}

</source>



== AbstractDocument: setDocumentFilter(DocumentFilter filter) ==



<source lang="java">
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.text.AbstractDocument;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.DocumentFilter;
public class UpcaseFilter extends DocumentFilter {
public void insertString(DocumentFilter.FilterBypass fb, int offset, String text,
AttributeSet attr) throws BadLocationException {
fb.insertString(offset, text.toUpperCase(), attr);
}
public void replace(DocumentFilter.FilterBypass fb, int offset, int length, String text,
AttributeSet attr) throws BadLocationException {
fb.replace(offset, length, text.toUpperCase(), attr);
}
public static void main(String[] args) {
DocumentFilter dfilter = new UpcaseFilter();
JTextArea jta = new JTextArea();
JTextField jtf = new JTextField();
((AbstractDocument) jta.getDocument()).setDocumentFilter(dfilter);
((AbstractDocument) jtf.getDocument()).setDocumentFilter(dfilter);
JFrame frame = new JFrame("UpcaseFilter");
frame.getContentPane().add(jta, "Center");
frame.getContentPane().add(jtf, "South");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(200, 120);
frame.setVisible(true);
}
}

</source>

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в 17:43, 31 мая 2010

Admin: 1 версия