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package com.artifex.gsviewer;
import java.awt.Point;
import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import com.artifex.gsviewer.gui.ViewerGUIListener;
import com.artifex.gsviewer.gui.ViewerWindow;
public class ViewerController implements ViewerGUIListener {
private ViewerWindow source;
private Document currentDocument;
public void open(final File file) {
if (currentDocument != null)
close();
Document.loadDocumentAsync(file, (final Document doc, final Exception exception) -> {
source.setLoadProgress(0);
if (exception != null) {
JOptionPane.showMessageDialog(source, exception.toString(),
"Failed to load", JOptionPane.ERROR_MESSAGE);
} else {
System.out.println("Loaded document");
this.currentDocument = doc;
source.loadDocumentToViewer(doc);
}
}, (int progress) -> {
source.setLoadProgress(progress);
});
}
public void close() {
if (currentDocument != null) {
source.loadDocumentToViewer(null);
currentDocument.unload();
currentDocument = null;
}
}
public Document getCurrentDocument() {
return currentDocument;
}
@Override
public void onViewerAdd(ViewerWindow source) {
this.source = source;
}
@Override
public void onPageChange(int oldPage, int newPage) {
System.out.println("Page change: " + oldPage + " to " + newPage);
}
@Override
public void onZoomChange(double oldZoom, double newZoom) {
System.out.println("Zoom change: " + oldZoom + " to " + newZoom);
}
@Override
public void onScrollChange(Point oldScroll, Point newScroll) {
System.out.println("Scroll change: " + oldScroll + " to " + newScroll);
}
@Override
public void onOpenFile() {
JFileChooser chooser = new JFileChooser();
chooser.setFileFilter(GSFileFilter.INSTANCE);
chooser.setCurrentDirectory(new File("").getAbsoluteFile());
int status = chooser.showOpenDialog(source);
if (status == JFileChooser.APPROVE_OPTION)
open(chooser.getSelectedFile());
}
@Override
public void onCloseFile() {
close();
}
@Override
public void onClosing() {
source.dispose();
System.exit(0);
}
@Override
public void onSettingsOpen() {
System.out.println("Settings open");
}
}
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