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index.zulzul<!-- works with ZK 6 and later only -->
<window border="normal" title="hello" apply="org.zkoss.bind.BindComposer"
viewModel="@bind(vm='pkg$.HelloViewModel')">
<label value="@bind(vm.message)"/>
<button label="Show" onClick="@bind('showHello')"/>
</window>
HelloViewModel.javajavaimport java.io.File;
import java.io.FileFilter;
import java.text.SimpleDateFormat;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.util.GenericForwardComposer;
//import org.zkoss.zkex.zul.West;
import org.zkoss.zul.West;
import org.zkoss.zul.AbstractTreeModel;
import org.zkoss.zul.Button;
import org.zkoss.zul.Filedownload;
import org.zkoss.zul.ListModelList;
import org.zkoss.zul.Listbox;
import org.zkoss.zul.Listcell;
import org.zkoss.zul.Listitem;
import org.zkoss.zul.ListitemRenderer;
import org.zkoss.zul.Tree;
import org.zkoss.zul.Treecell;
import org.zkoss.zul.Treeitem;
import org.zkoss.zul.TreeitemRenderer;
import org.zkoss.zul.Treerow;
public class FileExplorerComposer extends GenericForwardComposer{
Tree explorerTree;
Listbox explorerBox;
West west;
String root = "C:/";
public FileExplorerComposer(){
}
public String getRoot(){
return root;
}
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
explorerTree.setModel(new ExploerTreeModel(new File(root)));
explorerTree.setItemRenderer(new ExploerTreeRenderer());
explorerTree.addEventListener(Events.ON_SELECT, new DirectorySelectListener());
explorerBox.setItemRenderer(new ExploerBoxRenderer());
west.setTitle(root);
}
class ExploerTreeModel extends AbstractTreeModel{
public ExploerTreeModel(File root) {
super(root);
}
public Object getChild(Object parent, int index) {
File fs[] = ((File)parent).listFiles(new DirectoryOnlyFilter());
return fs==null?null:fs[index];
}
public int getChildCount(Object parent) {
File fs[] = ((File)parent).listFiles(new DirectoryOnlyFilter());
return fs==null?0:fs.length;
}
public boolean isLeaf(Object node) {
return getChildCount(node)==0;
}
}
class ExploerTreeRenderer implements TreeitemRenderer{
public void render(Treeitem item, Object data, int i) throws Exception {
File f = (File)data;
Treerow row = new Treerow();
row.setParent(item);
Treecell cell1 = new Treecell(f.getName(),"folder.png");
File fs[] = f.listFiles(new FileOnlyFilter());
Treecell cell2 = new Treecell(Integer.toString((fs==null?0:fs.length)));
cell1.setParent(row);
cell2.setParent(row);
item.setValue(data);
}
}
SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
class ExploerBoxRenderer implements ListitemRenderer{
public void render(Listitem item, Object data, int i) throws Exception {
File f = (File)data;
new Listcell(f.getName()).setParent(item);
new Listcell(Long.toString(f.length())).setParent(item);
new Listcell(format.format(f.lastModified())).setParent(item);
Listcell actCell = new Listcell();
Button btn = new Button("Download");
btn.setParent(actCell);
btn.addEventListener(Events.ON_CLICK,new FileDownloadListener(f));
actCell.setParent(item);
}
}
class DirectorySelectListener implements EventListener{
public void onEvent(Event event) throws Exception {
File f = (File)explorerTree.getSelectedItem().getValue();
File[] fs = f.listFiles(new FileOnlyFilter());
explorerBox.setModel(new ListModelList(fs));
}
}
class FileDownloadListener implements EventListener{
File file;
public FileDownloadListener(File file){
this.file = file;
}
public void onEvent(Event event) throws Exception {
Filedownload.save(file,null);
}
}
class FileOnlyFilter implements FileFilter{
public boolean accept(File f) {
return f.isFile() && !f.isHidden();
}
}
class DirectoryOnlyFilter implements FileFilter{
public boolean accept(File f) {
return f.isDirectory() && !f.isHidden();
}
}
}