fs/SimpleFsTreeBrowser.java

   1 package org.argeo.eclipse.ui.fs;
   2
   3 import java.nio.file.Files;
   4 import java.nio.file.Path;
   5 import java.util.ArrayList;
   6 import java.util.List;
   7
   8 import org.argeo.api.cms.CmsLog;
   9 import org.argeo.eclipse.ui.ColumnDefinition;
  10 import org.argeo.eclipse.ui.EclipseUiUtils;
  11 import org.eclipse.jface.viewers.ISelectionChangedListener;
  12 import org.eclipse.jface.viewers.IStructuredSelection;
  13 import org.eclipse.jface.viewers.SelectionChangedEvent;
  14 import org.eclipse.swt.SWT;
  15 import org.eclipse.swt.custom.SashForm;
  16 import org.eclipse.swt.events.KeyEvent;
  17 import org.eclipse.swt.events.KeyListener;
  18 import org.eclipse.swt.layout.GridData;
  19 import org.eclipse.swt.layout.GridLayout;
  20 import org.eclipse.swt.widgets.Composite;
  21 import org.eclipse.swt.widgets.Table;
  22 import org.eclipse.swt.widgets.Tree;
  23
  24 /** A simple Java 7 nio files browser with a tree */
  25 public class SimpleFsTreeBrowser extends Composite {
  26         private final static CmsLog log = CmsLog.getLog(SimpleFsTreeBrowser.class);
  27         private static final long serialVersionUID = -40347919096946585L;
  28
  29         private Path currSelected;
  30         private FsTreeViewer treeViewer;
  31         private FsTableViewer directoryDisplayViewer;
  32
  33         public SimpleFsTreeBrowser(Composite parent, int style) {
  34                 super(parent, style);
  35                 createContent(this);
  36                 // parent.layout(true, true);
  37         }
  38
  39         private void createContent(Composite parent) {
  40                 parent.setLayout(EclipseUiUtils.noSpaceGridLayout());
  41                 SashForm form = new SashForm(parent, SWT.HORIZONTAL);
  42                 Composite child1 = new Composite(form, SWT.NONE);
  43                 populateTree(child1);
  44                 Composite child2 = new Composite(form, SWT.BORDER);
  45                 populateDisplay(child2);
  46                 form.setLayoutData(EclipseUiUtils.fillAll());
  47                 form.setWeights(new int[] { 1, 3 });
  48         }
  49
  50         public void setInput(Path... paths) {
  51                 treeViewer.setPathsInput(paths);
  52                 treeViewer.getControl().getParent().layout(true, true);
  53         }
  54
  55         private void populateTree(final Composite parent) {
  56                 // GridLayout layout = EclipseUiUtils.noSpaceGridLayout();
  57                 // layout.verticalSpacing = 5;
  58                 parent.setLayout(new GridLayout());
  59
  60                 ISelectionChangedListener selList = new MySelectionChangedListener();
  61
  62                 treeViewer = new FsTreeViewer(parent, SWT.MULTI);
  63                 Tree tree = treeViewer.configureDefaultSingleColumnTable(500);
  64                 GridData gd = EclipseUiUtils.fillAll();
  65                 // gd.horizontalIndent = 10;
  66                 tree.setLayoutData(gd);
  67                 treeViewer.addSelectionChangedListener(selList);
  68         }
  69
  70         private class MySelectionChangedListener implements ISelectionChangedListener {
  71                 @Override
  72                 public void selectionChanged(SelectionChangedEvent event) {
  73                         IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();
  74                         if (selection.isEmpty())
  75                                 return;
  76                         else {
  77                                 Path newSelected = (Path) selection.getFirstElement();
  78                                 if (newSelected.equals(currSelected))
  79                                         return;
  80                                 currSelected = newSelected;
  81                                 if (Files.isDirectory(currSelected))
  82                                         directoryDisplayViewer.setInput(currSelected, "*");
  83                         }
  84                 }
  85         }
  86
  87         private void populateDisplay(final Composite parent) {
  88                 parent.setLayout(EclipseUiUtils.noSpaceGridLayout());
  89                 directoryDisplayViewer = new FsTableViewer(parent, SWT.MULTI);
  90                 List<ColumnDefinition> colDefs = new ArrayList<>();
  91                 colDefs.add(new ColumnDefinition(new FileIconNameLabelProvider(), "Name", 200, 200));
  92                 colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_SIZE), "Size", 100, 100));
  93                 colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_TYPE), "Type", 300, 300));
  94                 colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_LAST_MODIFIED),
  95                                 "Last modified", 100, 100));
  96                 Table table = directoryDisplayViewer.configureDefaultTable(colDefs);
  97                 table.setLayoutData(EclipseUiUtils.fillAll());
  98
  99                 table.addKeyListener(new KeyListener() {
 100                         private static final long serialVersionUID = -8083424284436715709L;
 101
 102                         @Override
 103                         public void keyReleased(KeyEvent e) {
 104                         }
 105
 106                         @Override
 107                         public void keyPressed(KeyEvent e) {
 108                                 log.debug("Key event received: " + e.keyCode);
 109                                 IStructuredSelection selection = (IStructuredSelection) directoryDisplayViewer.getSelection();
 110                                 Path selected = null;
 111                                 if (!selection.isEmpty())
 112                                         selected = ((Path) selection.getFirstElement());
 113                                 if (e.keyCode == SWT.CR) {
 114                                         if (!Files.isDirectory(selected))
 115                                                 return;
 116                                         if (selected != null) {
 117                                                 currSelected = selected;
 118                                                 directoryDisplayViewer.setInput(currSelected, "*");
 119                                         }
 120                                 } else if (e.keyCode == SWT.BS) {
 121                                         currSelected = currSelected.getParent();
 122                                         directoryDisplayViewer.setInput(currSelected, "*");
 123                                         directoryDisplayViewer.getTable().setFocus();
 124                                 }
 125                         }
 126                 });
 127         }
 128 }