package com.googlecode.richrest.client.view.jface;
import java.awt.Toolkit;
import java.awt.datatransfer.StringSelection;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
import com.googlecode.richrest.client.event.ExceptionAdapter;
import com.googlecode.richrest.client.event.ExceptionEvent;
import com.googlecode.richrest.client.event.ExceptionListener;
import com.googlecode.richrest.client.work.Worker;
import com.googlecode.richrest.util.ExceptionUtils;
public class ExceptionPane extends Composite {
private ExceptionListener exceptionListener;
private Text exceptionTextArea;
public ExceptionPane(final Composite parent) {
super(parent, SWT.NONE);
ToolBar toolBar = new ToolBar(this, SWT.NONE);
toolBar.setSize(400, 40);
ToolItem saveItem = new ToolItem(toolBar, SWT.NONE);
saveItem.setImage(Images.getImage("save.gif"));
saveItem.setText("保存");
saveItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
FileDialog fileDialog = new FileDialog(parent.getShell(), SWT.SAVE);
fileDialog.setFileName("exception.txt");
String fileName = fileDialog.open();
File file = new File(fileName);
if (file.exists()) {
boolean ch = MessageDialog.openQuestion(parent.getShell(), "保存", "文件已存在，是否覆盖?");
if (! ch)
return;
}
try {
FileWriter writer = null;
try {
writer = new FileWriter(file);
writer.write(exceptionTextArea.getText());
writer.flush();
} finally {
if (writer != null)
writer.close();
}
MessageDialog.openInformation(parent.getShell(), "保存", "保存异常信息成功!");
} catch (IOException ex) {
MessageDialog.openWarning(parent.getShell(), "保存", "保存异常信息失败! 原因: " + ex.getMessage());
}
}
});
ToolItem copyItem = new ToolItem(toolBar, SWT.NONE);
copyItem.setImage(Images.getImage("copy.gif"));
copyItem.setText("复制");
copyItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
copyText();
}
});
ToolItem clearItem = new ToolItem(toolBar, SWT.NONE);
clearItem.setImage(Images.getImage("clear.gif"));
clearItem.setText("清空");
clearItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
ExceptionPane.this.clearText();
}
});
exceptionTextArea = new Text(this, SWT.BORDER|SWT.MULTI|SWT.V_SCROLL|SWT.H_SCROLL|SWT.WRAP);
exceptionTextArea.setBounds(0, 40, 484, 400);
exceptionTextArea.setEditable(false);
exceptionTextArea.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
exceptionListener = new ExceptionAdapter() {
public void onBackCatched(final ExceptionEvent event) {
final String msg = ExceptionUtils.getDetailMessage(event.getException());
Display.getDefault().asyncExec(new Runnable(){
public void run() {
ExceptionPane.this.appendText(msg);
}
});
}
public void onForeCatched(final ExceptionEvent event) {
final String msg = ExceptionUtils.getDetailMessage(event.getException());
Display.getDefault().asyncExec(new Runnable(){
public void run() {
ExceptionPane.this.appendText(msg);
}
});
}
};
Worker.getWorker().addListener(exceptionListener);
}
protected void appendText(final String text) {
if (exceptionTextArea.getText().length() > 80000)
exceptionTextArea.setText("");
exceptionTextArea.append("[");
exceptionTextArea.append(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS").format(new Date()));
exceptionTextArea.append("]\n");
exceptionTextArea.append(text);
exceptionTextArea.append("\n");
}
protected void clearText() {
exceptionTextArea.setText("");
}
protected void copyText() {
StringSelection stringSelection = new StringSelection(exceptionTextArea.getText());
Toolkit.getDefaultToolkit().getSystemClipboard().setContents(stringSelection, stringSelection);
MessageDialog.openInformation(super.getShell(), "复制", "已复制异常信息到您的粘贴板上!");
}
@Override
public void dispose() {
Worker.getWorker().removeListener(exceptionListener);
super.dispose();
}
}