org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/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.apache.commons.logging.Log;
   9 import org.apache.commons.logging.LogFactory;
  10 import org.argeo.eclipse.ui.ColumnDefinition;
  11 import org.argeo.eclipse.ui.EclipseUiUtils;
  12 import org.eclipse.jface.viewers.ISelectionChangedListener;
  13 import org.eclipse.jface.viewers.IStructuredSelection;
  14 import org.eclipse.jface.viewers.SelectionChangedEvent;
  15 import org.eclipse.swt.SWT;
  16 import org.eclipse.swt.custom.SashForm;
  17 import org.eclipse.swt.events.KeyEvent;
  18 import org.eclipse.swt.events.KeyListener;
  19 import org.eclipse.swt.layout.GridData;
  20 import org.eclipse.swt.layout.GridLayout;
  21 import org.eclipse.swt.widgets.Composite;
  22 import org.eclipse.swt.widgets.Table;
  23 import org.eclipse.swt.widgets.Tree;
  24
  25 /** A simple Java 7 nio files browser with a tree */
  26 public class SimpleFsTreeBrowser extends Composite {
  27         private final static Log log = LogFactory.getLog(SimpleFsTreeBrowser.class);
  28         private static final long serialVersionUID = -40347919096946585L;
  29
  30         private Path currSelected;
  31         private FsTreeViewer treeViewer;
  32         private FsTableViewer directoryDisplayViewer;
  33
  34         public SimpleFsTreeBrowser(Composite parent, int style) {
  35                 super(parent, style);
  36                 createContent(this);
  37                 // parent.layout(true, true);
  38         }
  39
  40         private void createContent(Composite parent) {
  41                 parent.setLayout(EclipseUiUtils.noSpaceGridLayout());
  42                 SashForm form = new SashForm(parent, SWT.HORIZONTAL);
  43                 Composite child1 = new Composite(form, SWT.NONE);
  44                 populateTree(child1);
  45                 Composite child2 = new Composite(form, SWT.BORDER);
  46                 populateDisplay(child2);
  47                 form.setLayoutData(EclipseUiUtils.fillAll());
  48                 form.setWeights(new int[] { 1, 3 });
  49         }
  50
  51         public void setInput(Path... paths) {
  52                 treeViewer.setPathsInput(paths);
  53                 treeViewer.getControl().getParent().layout(true, true);
  54         }
  55
  56         private void populateTree(final Composite parent) {
  57                 // GridLayout layout = EclipseUiUtils.noSpaceGridLayout();
  58                 // layout.verticalSpacing = 5;
  59                 parent.setLayout(new GridLayout());
  60
  61                 ISelectionChangedListener selList = new MySelectionChangedListener();
  62
  63                 treeViewer = new FsTreeViewer(parent, SWT.MULTI);
  64                 Tree tree = treeViewer.configureDefaultSingleColumnTable(500);
  65                 GridData gd = EclipseUiUtils.fillAll();
  66                 // gd.horizontalIndent = 10;
  67                 tree.setLayoutData(gd);
  68                 treeViewer.addSelectionChangedListener(selList);
  69         }
  70
  71         private class MySelectionChangedListener implements ISelectionChangedListener {
  72                 @Override
  73                 public void selectionChanged(SelectionChangedEvent event) {
  74                         IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();
  75                         if (selection.isEmpty())
  76                                 return;
  77                         else {
  78                                 Path newSelected = (Path) selection.getFirstElement();
  79                                 if (newSelected.equals(currSelected))
  80                                         return;
  81                                 currSelected = newSelected;
  82                                 if (Files.isDirectory(currSelected))
  83                                         directoryDisplayViewer.setInput(currSelected, "*");
  84                         }
  85                 }
  86         }
  87
  88         private void populateDisplay(final Composite parent) {
  89                 parent.setLayout(EclipseUiUtils.noSpaceGridLayout());
  90                 directoryDisplayViewer = new FsTableViewer(parent, SWT.MULTI);
  91                 List<ColumnDefinition> colDefs = new ArrayList<>();
  92                 colDefs.add(new ColumnDefinition(new FileIconNameLabelProvider(), "Name", 200, 200));
  93                 colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_SIZE), "Size", 100, 100));
  94                 colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_TYPE), "Type", 300, 300));
  95                 colDefs.add(new ColumnDefinition(new NioFileLabelProvider(FsUiConstants.PROPERTY_LAST_MODIFIED),
  96                                 "Last modified", 100, 100));
  97                 Table table = directoryDisplayViewer.configureDefaultTable(colDefs);
  98                 table.setLayoutData(EclipseUiUtils.fillAll());
  99
 100                 table.addKeyListener(new KeyListener() {
 101                         private static final long serialVersionUID = -8083424284436715709L;
 102
 103                         @Override
 104                         public void keyReleased(KeyEvent e) {
 105                         }
 106
 107                         @Override
 108                         public void keyPressed(KeyEvent e) {
 109                                 log.debug("Key event received: " + e.keyCode);
 110                                 IStructuredSelection selection = (IStructuredSelection) directoryDisplayViewer.getSelection();
 111                                 Path selected = null;
 112                                 if (!selection.isEmpty())
 113                                         selected = ((Path) selection.getFirstElement());
 114                                 if (e.keyCode == SWT.CR) {
 115                                         if (!Files.isDirectory(selected))
 116                                                 return;
 117                                         if (selected != null) {
 118                                                 currSelected = selected;
 119                                                 directoryDisplayViewer.setInput(currSelected, "*");
 120                                         }
 121                                 } else if (e.keyCode == SWT.BS) {
 122                                         currSelected = currSelected.getParent();
 123                                         directoryDisplayViewer.setInput(currSelected, "*");
 124                                         directoryDisplayViewer.getTable().setFocus();
 125                                 }
 126                         }
 127                 });
 128         }
 129 }