/*
* @(#)OpenApplicationFileAction.java
*
* Copyright (c) 1996-2010 The authors and contributors of JHotDraw.
* You may not use, copy or modify this file, except in compliance with the
* accompanying license terms.
*/
package org.jhotdraw.app.action.app;
import java.awt.Frame;
import org.jhotdraw.util.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.URI;
import org.jhotdraw.app.Application;
import org.jhotdraw.app.View;
import org.jhotdraw.app.action.AbstractApplicationAction;
import org.jhotdraw.gui.BackgroundTask;
import org.jhotdraw.gui.JSheet;
import org.jhotdraw.gui.event.SheetEvent;
import org.jhotdraw.gui.event.SheetListener;
import org.jhotdraw.net.URIUtil;
/**
* Opens a file for which an open-request was sent to the application.
* <p>
* The file name is passed in the action command of the action event.
* <p>
* This action is called when the user drops a file on the dock icon of
* {@code DefaultOSXApplication} or onto the desktop area of
* {@code DefaultMDIApplication}.
* <p>
* If you want this behavior in your application, you have to create an action
* with this ID and put it in your {@code ApplicationModel} in method
* {@link org.jhotdraw.app.ApplicationModel#initApplication}.
* <hr>
* <b>Features</b>
*
* <p><em>Allow multiple views per URI</em><br>
* When the feature is disabled, {@code OpenApplicationFileAction} prevents
* opening an URI which is opened in another view.<br>
* See {@link org.jhotdraw.app} for a description of the feature.
* </p>
*
* <p><em>Open last URI on launch</em><br>
* {@code OpenApplicationFileAction} supplies data for this feature by calling
* {@link Application#addRecentURI} when it successfully loaded a file.
* See {@link org.jhotdraw.app} for a description of the feature.
* </p>
*
* @author Werner Randelshofer
* @version $Id$
*/
public class OpenApplicationFileAction extends AbstractApplicationAction {
private static final long serialVersionUID = 1L;
public static final String ID = "application.openFile";
private JFileChooser fileChooser;
private int entries;
/** Creates a new instance. */
public OpenApplicationFileAction(Application app) {
super(app);
putValue(Action.NAME, "OSX Open File");
}
/**
* Opens a new view.
* <p>
* The file name is passed in the action command of the action event.
*
*/
@Override
public void actionPerformed(ActionEvent evt) {
final Application app = getApplication();
final String filename = evt.getActionCommand();
if (app.isEnabled()) {
URI uri = new File(filename).toURI();
// Prevent same URI from being opened more than once
if (!app.getModel().isAllowMultipleViewsPerURI()) {
for (View v : app.getViews()) {
if (v.getURI() != null && v.getURI().equals(uri)) {
v.getComponent().requestFocus();
return;
}
}
}
app.setEnabled(false);
// Search for an empty view
View emptyView = app.getActiveView();
if (emptyView == null
|| emptyView.getURI() != null
|| emptyView.hasUnsavedChanges()) {
emptyView = null;
}
final View p;
if (emptyView == null) {
p = app.createView();
app.add(p);
app.show(p);
} else {
p = emptyView;
}
openView(p, uri);
}
}
protected void openView(final View view, final URI uri) {
final Application app = getApplication();
app.setEnabled(true);
// If there is another view with the same URI we set the multiple open
// id of our view to max(multiple open id) + 1.
int multipleOpenId = 1;
for (View aView : app.views()) {
if (aView != view
&& aView.getURI() != null
&& aView.getURI().equals(uri)) {
multipleOpenId = Math.max(multipleOpenId, aView.getMultipleOpenId() + 1);
}
}
view.setMultipleOpenId(multipleOpenId);
view.setEnabled(false);
// Open the file
view.execute(new BackgroundTask() {
@Override
protected void construct() throws IOException {
boolean exists = true;
try {
File f = new File(uri);
exists = f.exists();
} catch (IllegalArgumentException e) {
// The URI does not denote a file, thus we can not check whether the file exists.
}
if (exists) {
view.read(uri, null);
} else {
ResourceBundleUtil labels = ResourceBundleUtil.getBundle("org.jhotdraw.app.Labels");
throw new IOException(labels.getFormatted("file.open.fileDoesNotExist.message", URIUtil.getName(uri)));
}
}
@Override
protected void done() {
view.setURI(uri);
app.addRecentURI(uri);
Frame w = (Frame) SwingUtilities.getWindowAncestor(view.getComponent());
if (w != null) {
w.setExtendedState(w.getExtendedState() & ~Frame.ICONIFIED);
w.toFront();
}
view.setEnabled(true);
view.getComponent().requestFocus();
}
@Override
protected void failed(Throwable value) {
value.printStackTrace();
String message = value.getMessage() != null ? value.getMessage() : value.toString();
ResourceBundleUtil labels = ResourceBundleUtil.getBundle("org.jhotdraw.app.Labels");
JSheet.showMessageSheet(view.getComponent(),
"<html>" + UIManager.getString("OptionPane.css")
+ "<b>" + labels.getFormatted("file.open.couldntOpen.message", URIUtil.getName(uri)) + "</b><p>"
+ (message == null ? "" : message),
JOptionPane.ERROR_MESSAGE, new SheetListener() {
@Override
public void optionSelected(SheetEvent evt) {
view.setEnabled(true);
}
});
}
});
}
}