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package com.itmill.toolkit.demo;
import java.io.File;
import com.itmill.toolkit.data.util.FilesystemContainer;
import com.itmill.toolkit.data.util.FilesystemContainer.FileItem;
import com.itmill.toolkit.demo.util.SampleDirectory;
import com.itmill.toolkit.ui.*;
import com.itmill.toolkit.ui.Component.Event;
import com.itmill.toolkit.ui.Component.Listener;
/**
* Browsable file explorer using Toolkit Tree component. Demonstrates: how to
* use <code>com.itmill.toolkit.ui.Component.Tree</code> datasource container,
* how to create <code>com.itmill.toolkit.data.util.FilesystemContainer</code>,
* how to read <code>com.itmill.toolkit.ui.Component.Event</code> objects, how
* to receive and handle any event by implementing
* <code>com.itmill.toolkit.ui.Component.Listener</code>.
*
* @since 4.0.0
*
*/
public class TreeFilesystemContainer extends com.itmill.toolkit.Application
implements Listener {
// Filesystem explorer panel and it's components
private Panel explorerPanel = new Panel("Filesystem explorer");
private Tree filesystem = new Tree();
// File properties panel and it's components
private Panel propertyPanel = new Panel("File properties");
private Label fileProperties = new Label();
public void init() {
Window main = new Window("Tree demo");
setMainWindow(main);
// set the application to use Corporate -theme
setTheme("corporate");
// Main window contains heading and two panels
main.addComponent(new Label("<h3>TreeFilesystemContainer demo</h3>",
Label.CONTENT_XHTML));
main.addComponent(propertyPanel);
main.addComponent(explorerPanel);
// Explorer panel contains tree
explorerPanel.addComponent(filesystem);
explorerPanel.setWidth(500);
// Property panel contains label
propertyPanel.addComponent(fileProperties);
fileProperties.setCaption("No file selected.");
propertyPanel.setEnabled(false);
propertyPanel.setWidth(500);
// Get sample directory
File sampleDir = SampleDirectory.getDirectory(this);
// Populate tree with FilesystemContainer
FilesystemContainer fsc = new FilesystemContainer(sampleDir, true);
filesystem.setContainerDataSource(fsc);
// "this" handles all filesystem events
// e.g. node clicked, expanded etc.
filesystem.addListener((Listener) this);
// Value changes are immediate
filesystem.setImmediate(true);
}
/**
* Listener for any component events. This class has been registered as an
* listener for component fsTree.
*/
public void componentEvent(Event event) {
// Check if event occured at fsTree component
if (event.getSource() == filesystem) {
// Check if event is about changing value
if (event.getClass() == Field.ValueChangeEvent.class) {
// Update property panel contents
FileItem fileItem = (FileItem) filesystem.getItem(filesystem
.getValue());
fileProperties.setIcon(fileItem.getIcon());
fileProperties.setCaption(fileItem.getName() + ", size "
+ fileItem.getSize() + " bytes.");
}
// here we could check for other type of events for filesystem
// component
}
// here we could check for other component's events
}
}
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