File Browser JFace : Table « SWT JFace Eclipse « Java






File Browser JFace

/******************************************************************************
 * All Right Reserved. 
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * 
 * Created on Mar 12, 2004 11:51:42 PM by JACK
 * $Id$
 * 
 *****************************************************************************/



import java.io.File;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;

public class FileBrowserJFace {
  Display display = new Display();
  Shell shell = new Shell(display);
  
  File rootDir;
  
  TreeViewer treeViewer;

  public FileBrowserJFace() {

    Action actionSetRootDir = new Action("Set Root Dir") {
      public void run() {
        DirectoryDialog dialog = new DirectoryDialog(shell);
        String path = dialog.open();
        if (path != null) {
          treeViewer.setInput(new File(path));
        }
      }
    };
    
    final ViewerFilter directoryFilter = new ViewerFilter() {
      public boolean select(
        Viewer viewer,
        Object parentElement,
        Object element) {
        return ((File)element).isDirectory();
      }
    };
    
    Action actionShowDirectoriesOnly = new Action("Show directories only") {
      public void run() {
        if(! isChecked())
          treeViewer.removeFilter(directoryFilter);
        else
          treeViewer.addFilter(directoryFilter);
      }
    };
    actionShowDirectoriesOnly.setChecked(false);

    Action actionDeleteFile = new Action("Delete the selected file") {
      public void run() {
        IStructuredSelection selection = (IStructuredSelection)treeViewer.getSelection();
        File file = (File)selection.getFirstElement();
        if(file == null) {
          System.out.println("Please select a file first.");
          return;
        }
        
        MessageBox messageBox = new MessageBox(shell, SWT.YES | SWT.NO);
        messageBox.setMessage("Are you sure to delete file: " + file.getName() + "?");
        if(messageBox.open() == SWT.YES) {
          File parentFile = file.getParentFile();
          if(file.delete()) {
            System.out.println("File has been deleted. ");
            // Notifies the viewer for update. 
            treeViewer.refresh(parentFile, false);
          }else{
            System.out.println("Unable to delete file.");
          }
        }
          
      }
    };

    ToolBar toolBar = new ToolBar(shell, SWT.FLAT);
    ToolBarManager manager = new ToolBarManager(toolBar);
    manager.add(actionSetRootDir);
    manager.add(actionShowDirectoriesOnly);
    manager.add(actionDeleteFile);

    manager.update(true);
    
  
    shell.setLayout(new GridLayout());

    treeViewer = new TreeViewer(shell, SWT.BORDER);
    treeViewer.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));

    // Sets the content provider.
    treeViewer.setContentProvider(new ITreeContentProvider() {
      public Object[] getChildren(Object parentElement) {
        File[] files = ((File)parentElement).listFiles();
        if(files == null)
          return new Object[0];
        return files;
      }

      public Object getParent(Object element) {
        return ((File)element).getParentFile();
      }

      public boolean hasChildren(Object element) {
        File file = (File)element;
        File[] files = file.listFiles();
        if(files == null || files.length == 0)
          return false;
        return true;
      }

      public Object[] getElements(Object inputElement) {
        File[] files = ((File)inputElement).listFiles();
        if(files == null)
          return new Object[0];
        return files;
      }

      public void dispose() {
      }

      public void inputChanged(
        Viewer viewer,
        Object oldInput,
        Object newInput) {
        shell.setText("Now browsing: " + newInput);
      }
    });
    
    // Sets the label provider. 
    treeViewer.setLabelProvider(new LabelProvider() {
      public Image getImage(Object element) {
        return getIcon((File)element);
      }

      public String getText(Object element) {
        return ((File)element).getName();
      }
    });
    
    // Sorts the tree. 
    treeViewer.setSorter(new ViewerSorter() {
      public int category(Object element) {
        File file = (File)element;
        if(file.isDirectory())
          return 0;
        else
          return 1;
      }
    });
    
    
    treeViewer.setInput(new File("C:/"));
    
    shell.setSize(400, 260);
    shell.open();
    //textUser.forceFocus();

    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }

    display.dispose();
  }

  /**
   * Renames a file.
   * 
   * @param file
   * @param newName
   * @return the after after being renamed or <code>null</code> if renaming
   *         fails.
   */
  private File renameFile(File file, String newName) {
    File dest = new File(file.getParentFile(), newName);
    if (file.renameTo(dest)) {
      return dest;
    } else {
      return null;
    }
  }


  private ImageRegistry imageRegistry;
  Image iconFolder = new Image(shell.getDisplay(), "java2s.gif");
  Image iconFile = new Image(shell.getDisplay(), "java2s.gif");

  /**
   * Returns an icon representing the specified file.
   * 
   * @param file
   * @return
   */
  private Image getIcon(File file) {
    if (file.isDirectory())
      return iconFolder;

    int lastDotPos = file.getName().indexOf('.');
    if (lastDotPos == -1)
      return iconFile;

    Image image = getIcon(file.getName().substring(lastDotPos + 1));
    return image == null ? iconFile : image;
  }

  /**
   * Returns the icon for the file type with the specified extension.
   * 
   * @param extension
   * @return
   */
  private Image getIcon(String extension) {
    if (imageRegistry == null)
      imageRegistry = new ImageRegistry();
    Image image = imageRegistry.get(extension);
    if (image != null)
      return image;

    Program program = Program.findProgram(extension);
    ImageData imageData = (program == null ? null : program.getImageData());
    if (imageData != null) {
      image = new Image(shell.getDisplay(), imageData);
      imageRegistry.put(extension, image);
    } else {
      image = iconFile;
    }

    return image;
  }
  
  
  
  public static void main(String[] args) {
    new FileBrowserJFace();
  }
}

           
       








Related examples in the same category

1.How to order 1000 elements in a swt column table with O(n log(n)) complexity! using Comparator and Array.sort() implemented in a TableColumn Listener FactoryHow to order 1000 elements in a swt column table with O(n log(n)) complexity! using Comparator and Array.sort() implemented in a TableColumn Listener Factory
2.Print KTable (SWT Table)Example Print KTable (SWT Table)Example
3.The source of a custom table class for Java SWT applicationsThe source of a custom table class for Java SWT applications
4.SWT Table Editor
5.Simple File Browser in SWT TableSimple File Browser in SWT Table
6.Bug Tracker JFaceBug Tracker JFace
7.Bug TrackerBug Tracker
8.File Browser DemoFile Browser Demo
9.TableEditor exampleTableEditor example
10.File Browser SampleFile Browser Sample
11.Bug ReportBug Report
12.Displays ASCII CodesDisplays ASCII Codes
13.Demonstrates the SWT.VIRTUAL styleDemonstrates the SWT.VIRTUAL style
14.Displays a tableDisplays a table
15.A table of baseball players and allows sortingA table of baseball players and allows sorting
16.Demonstrates TableCursorDemonstrates TableCursor
17.Demonstrates TableTreeDemonstrates TableTree
18.Demonstrates TableEditorDemonstrates TableEditor
19.Shows the extensions on the system and their associated programsShows the extensions on the system and their associated programs
20.Table Example 3Table Example 3
21.Table Example 2Table Example 2
22.Table ExampleTable Example
23.Demonstrates TableViewersDemonstrates TableViewers
24.Demonstrates CheckboxTableViewerDemonstrates CheckboxTableViewer
25.Demonstrates CellEditorsDemonstrates CellEditors
26.SWT Table Simple DemoSWT Table Simple Demo
27.Create fake tooltips for items in a SWT tableCreate fake tooltips for items in a SWT table
28.Place a progress bar in a SWT tablePlace a progress bar in a SWT table
29.edit a cell in a SWT table (in place, fancy)edit a cell in a SWT table (in place, fancy)
30.edit the text of a SWT table item (in place)edit the text of a SWT table item (in place)
31.navigate a SWT table cells with arrow keysnavigate a SWT table cells with arrow keys
32.Update SWT table item textUpdate SWT table item text
33.Sort a SWT table by columnSort a SWT table by column
34.Select an index (select and scroll) in a SWT tableSelect an index (select and scroll) in a SWT table
35.Scroll a SWT table (set the top index)Scroll a SWT table (set the top index)
36.Resize columns as SWT table resizesResize columns as SWT table resizes
37.Remove selected items in a SWT tableRemove selected items in a SWT table
38.Print selected items in a SWT tablePrint selected items in a SWT table
39.Place arbitrary controls in a SWT tablePlace arbitrary controls in a SWT table
40.Reorder columns and reorder columns programmaticallyReorder columns and reorder columns programmatically
41.Insert a SWT table column (at an index)Insert a SWT table column (at an index)
42.Insert a SWT table item (at an index)Insert a SWT table item (at an index)
43.Find a SWT table cell from mouse down (works for any table style)Find a SWT table cell from mouse down (works for any table style)
44.Find a table cell from mouse down (SWT.FULL_SELECTION)Find a table cell from mouse down (SWT.FULL_SELECTION)
45.Detect a selection or check event in a table (SWT.CHECK)Detect a selection or check event in a table (SWT.CHECK)
46.Create a SWT table with 1,000,000 itemsCreate a SWT table with 1,000,000 items
47.Create a SWT table (columns, headers, lines)Create a SWT table (columns, headers, lines)
48.Create a SWT table (no columns, no headers)Create a SWT table (no columns, no headers)
49.Color cells and rows in SWT tableColor cells and rows in SWT table
50.Create a virtual SWT table and add 1000 entries to it every 500 msCreate a virtual SWT table and add 1000 entries to it every 500 ms
51.Dropped data type depends on target item in tableDropped data type depends on target item in table
52.Create a table (lazy)Create a table (lazy)