/*
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* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package yan.t2;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
public class FileDetail {
private boolean isFile;
private boolean isFolder;
private boolean exists;
private long length;
public FileDetail
(File file
) {
isFile = file.isFile();
isFolder = file.isDirectory();
exists = file.exists();
if (exists) {
this.FileName = file.getName();
Date date
= new Date(file.
lastModified());
this.LastModified = fmt.format(date);
this.length = file.length();
if (isFolder) {
this.type = "Folder";
} else {
this.
type = String.
valueOf(this.
length / (long) 1024) + "KB";
}
}
}
return FileName;
}
public void setFileName
(String fileName
) {
FileName = fileName;
}
public String getLastModified
() {
return LastModified;
}
public void setLastModified
(String lastModified
) {
LastModified = lastModified;
}
return type;
}
public void setType
(String type
) {
this.type = type;
}
public long getLength() {
return length;
}
public void setLength(long length) {
this.length = length;
}
}
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package yan.t2;
import java.io.File;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.control.TreeItem;
public class FileTreeItem extends TreeItem<File> {
private boolean isLeaf;
private boolean isFirstTimeChildren = true;
private boolean isFirstTimeLeaf = true;
public FileTreeItem
(File file
) {
super(file);
}
@Override
public ObservableList<TreeItem<File>> getChildren() {
if (isFirstTimeChildren) {
isFirstTimeChildren = false;
super.getChildren().setAll(buildChildren(this));
}
return super.getChildren();
}
@Override
public boolean isLeaf() {
if (isFirstTimeLeaf) {
isFirstTimeLeaf = false;
isLeaf = f.isFile();
}
return isLeaf;
}
private ObservableList<TreeItem<File>> buildChildren(TreeItem<File> TreeItem) {
File f
= TreeItem.
getValue();
if (f != null && f.isDirectory()) {
File[] files
= f.
listFiles();
if (files != null) {
ObservableList<TreeItem<File>> children = FXCollections.observableArrayList();
for (File childFile
: files
) {
children.add(new FileTreeItem(childFile));
}
return children;
}
}
return FXCollections.emptyObservableList();
}
}
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package yan.t2;
import java.io.File;
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TreeItem;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.stage.Stage;
import javafx.scene.control.TreeView;
import javafx.scene.control.cell.PropertyValueFactory;
public class TreeViews extends Application {
public static ObservableList<FileDetail> data = FXCollections.observableArrayList();
public static void main
(String[] args
) {
launch(args);
}
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("Javafx 实现\"我的电脑\"资源管理器");
TreeItem
<File
> rootItem
= new TreeItem
<>(new File(System.
getenv("COMPUTERNAME")));
FileTreeItem rootsitem = new FileTreeItem(file);
rootItem.getChildren().add(rootsitem);
}
TreeView<File> tree = new TreeView<File>(rootItem);
HBox root = new HBox();
TableView<FileDetail> tableView = new TableView<>(data);
TableColumn<FileDetail, String> firstColumn = new TableColumn<>("文件");
firstColumn.setCellValueFactory(new PropertyValueFactory<FileDetail, String>("FileName"));
firstColumn.setPrefWidth(120);
TableColumn<FileDetail, String> secondColumn = new TableColumn<>("类型");
secondColumn.setCellValueFactory(new PropertyValueFactory<FileDetail, String>("type"));
secondColumn.setPrefWidth(120);
TableColumn<FileDetail, String> thirdColumn = new TableColumn<>("最后修改");
thirdColumn.setCellValueFactory(new PropertyValueFactory<FileDetail, String>("LastModified"));
thirdColumn.setPrefWidth(200);
tableView.getColumns().setAll(firstColumn, secondColumn, thirdColumn);
HBox.setHgrow(tree, Priority.ALWAYS);
HBox.setHgrow(tableView, Priority.ALWAYS);
root.getChildren().addAll(tree, tableView);
tree.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<TreeItem<File>>() {
@Override
public void changed(ObservableValue<? extends TreeItem<File>> observable, TreeItem<File> oldValue, TreeItem<File> newValue) {
ObservableList<TreeItem<File>> treelist = newValue.getChildren();
ObservableList<FileDetail> tablelist = FXCollections.observableArrayList();
for (TreeItem<File> item : treelist) {
FileDetail filedetail = new FileDetail(item.getValue());
tablelist.add(filedetail);
}
data.setAll(tablelist);
}
});
primaryStage.setScene(new Scene(root));
primaryStage.setHeight(600);
primaryStage.show();
}
}