package com.googlecode.richrest.client.view.jface;
import org.eclipse.jface.action.ContributionItem;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import com.googlecode.richrest.client.Client;
import com.googlecode.richrest.client.event.NetworkAdapter;
import com.googlecode.richrest.client.event.NetworkEvent;
import com.googlecode.richrest.client.event.NetworkListener;
import com.googlecode.richrest.client.event.TransferAdapter;
import com.googlecode.richrest.client.event.TransferEvent;
import com.googlecode.richrest.client.event.TransferListener;
/**
* 传输状态项，可将此状态项添加到工具栏，状态栏上。
* <br>使用如：
* <pre>
* public class ApplicationActionBarAdvisor extends ActionBarAdvisor {
* protected void fillStatusLine(IStatusLineManager statusLine) {
* super.fillStatusLine(statusLine);
* statusLine.add(new ConnectionItem(Actions.getClient()));
* }
* }
* </pre>
* @author <a href="mailto:liangfei0201@gmail.com">liangfei</a>
*/
public class NetworkStatus extends ContributionItem {
private final Client client;
public NetworkStatus(Client client) {
super(NetworkStatus.class.getName());
if (client == null)
throw new NullPointerException("Client == null!");
this.client = client;
// 初始化图片
this.connectionImage = Images.getImage("connected.gif");
this.disconnectionImage = Images.getImage("disconnected.gif");
this.transportationImage = Images.getImage("transporting.gif");
}
private Cursor handCursor = new Cursor(null, SWT.CURSOR_HAND);
private Label connectionButton;
private WorkDialog executionDialog;
private ExceptionDialog exceptionDialog;
private ControlDialog controlDialog;
private final Image connectionImage;
private final Image disconnectionImage;
private final Image transportationImage;
private NetworkListener connectionListener;
private TransferListener transportationListener;
@Override
public void fill(Composite parent) {
try {
executionDialog = new WorkDialog(parent.getShell());
exceptionDialog = new ExceptionDialog(parent.getShell());
controlDialog = new ControlDialog(parent.getShell(), client);
connectionButton = new Label(parent, SWT.NONE);
connectionButton.setCursor(handCursor);
// 按钮点击事件
connectionButton.addMouseListener(new MouseListener(){
public void mouseDoubleClick(MouseEvent event) {}
public void mouseDown(MouseEvent event) {}
public void mouseUp(MouseEvent event) {
controlDialog.setVisible(true);
}
});
// 初始化状态
refreshStatus();
// 连接状态事件
connectionListener = new NetworkAdapter() {
public void onConnected(NetworkEvent event) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
setConnected(true);
}
});
}
public void onDisconnected(NetworkEvent event) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
setConnected(false);
}
});
}
};
client.addListener(connectionListener);
transportationListener = new TransferAdapter() {
public void onTransferring(final TransferEvent event) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
setTransporting(client.getTransferrer().isTransferring());
}
});
}
public void onTransferred(TransferEvent event) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
setTransporting(client.getTransferrer().isTransferring());
}
});
}
};
client.addListener(transportationListener);
} catch (Throwable t) {
t.printStackTrace();
}
this.setVisible(true);
}
private boolean connected;
private boolean transporting;
protected void setConnected(boolean connected) {
setStatus(connected, this.transporting);
}
protected void setTransporting(boolean transporting) {
setStatus(this.connected, transporting);
}
private void setStatus(boolean connected, boolean transporting) {
if (this.connected != connected || this.transporting != transporting) {
this.connected = connected;
this.transporting = transporting;
refreshStatus();
}
}
protected void refreshStatus() {
if (connected) {
if (transporting) {
connectionButton.setImage(transportationImage);
connectionButton.setToolTipText("Transporting");
} else {
connectionButton.setImage(connectionImage);
connectionButton.setToolTipText("Online");
}
} else {
connectionButton.setImage(disconnectionImage);
connectionButton.setToolTipText("Offline");
}
}
@Override
public void dispose() {
client.removeListener(connectionListener);
client.removeListener(transportationListener);
if (connectionButton != null
&& ! connectionButton.isDisposed())
connectionButton.dispose();
if (handCursor != null
&& ! handCursor.isDisposed())
handCursor.dispose();
if (connectionImage != null
&& ! connectionImage.isDisposed())
connectionImage.dispose();
if (disconnectionImage != null
&& ! disconnectionImage.isDisposed())
disconnectionImage.dispose();
if (transportationImage != null
&& ! transportationImage.isDisposed())
transportationImage.dispose();
if (executionDialog != null)
executionDialog.dispose();
if (exceptionDialog != null)
exceptionDialog.dispose();
if (controlDialog != null)
controlDialog.dispose();
super.dispose();
}
}