org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/fs/FsTableViewer.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.List;
   6
   7 import org.argeo.eclipse.ui.ColumnDefinition;
   8 import org.eclipse.jface.viewers.CellLabelProvider;
   9 import org.eclipse.jface.viewers.ILazyContentProvider;
  10 import org.eclipse.jface.viewers.TableViewer;
  11 import org.eclipse.jface.viewers.TableViewerColumn;
  12 import org.eclipse.jface.viewers.Viewer;
  13 import org.eclipse.swt.SWT;
  14 import org.eclipse.swt.layout.GridData;
  15 import org.eclipse.swt.widgets.Composite;
  16 import org.eclipse.swt.widgets.Table;
  17 import org.eclipse.swt.widgets.TableColumn;
  18
  19 /**
  20  * Canonical implementation of a JFace table viewer to display the content of a
  21  * file folder
  22  */
  23 public class FsTableViewer extends TableViewer {
  24         private static final long serialVersionUID = -5632407542678477234L;
  25
  26         private boolean showHiddenItems = false;
  27         private boolean folderFirst = true;
  28         private boolean reverseOrder = false;
  29         private String orderProperty = FsUiConstants.PROPERTY_NAME;
  30
  31         public FsTableViewer(Composite parent, int style) {
  32                 super(parent, style | SWT.VIRTUAL);
  33         }
  34
  35         public Table configureDefaultSingleColumnTable(int tableWidthHint) {
  36
  37                 return configureDefaultSingleColumnTable(tableWidthHint, new FileIconNameLabelProvider());
  38         }
  39
  40         public Table configureDefaultSingleColumnTable(int tableWidthHint, CellLabelProvider labelProvider) {
  41                 Table table = this.getTable();
  42                 table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false));
  43                 table.setLinesVisible(false);
  44                 table.setHeaderVisible(false);
  45                 // CmsUtils.markup(table);
  46                 // CmsUtils.style(table, MaintenanceStyles.BROWSER_COLUMN);
  47
  48                 TableViewerColumn column = new TableViewerColumn(this, SWT.NONE);
  49                 TableColumn tcol = column.getColumn();
  50                 tcol.setWidth(tableWidthHint);
  51                 column.setLabelProvider(labelProvider);
  52                 this.setContentProvider(new MyLazyCP());
  53                 return table;
  54         }
  55
  56         public Table configureDefaultTable(List<ColumnDefinition> columns) {
  57                 this.setContentProvider(new MyLazyCP());
  58                 Table table = this.getTable();
  59                 table.setLinesVisible(true);
  60                 table.setHeaderVisible(true);
  61                 // CmsUtils.markup(table);
  62                 // CmsUtils.style(table, MaintenanceStyles.BROWSER_COLUMN);
  63                 for (ColumnDefinition colDef : columns) {
  64                         TableViewerColumn column = new TableViewerColumn(this, SWT.NONE);
  65                         column.setLabelProvider(colDef.getLabelProvider());
  66                         TableColumn tcol = column.getColumn();
  67                         tcol.setResizable(true);
  68                         tcol.setText(colDef.getLabel());
  69                         tcol.setWidth(colDef.getMinWidth());
  70                 }
  71                 return table;
  72         }
  73
  74         public void setInput(Path dir, String filter) {
  75                 Path[] rows = FsUiUtils.getChildren(dir, filter, showHiddenItems, folderFirst, orderProperty, reverseOrder);
  76                 if (rows == null) {
  77                         this.setInput(null);
  78                         this.setItemCount(0);
  79                         return;
  80                 }
  81                 boolean isRoot = dir.getRoot().equals(dir);
  82                 final Object[] res;
  83                 if (isRoot)
  84                         res = rows;
  85                 else {
  86                         res = new Object[rows.length + 1];
  87                         res[0] = new ParentDir(dir.getParent());
  88                         for (int i = 1; i < res.length; i++) {
  89                                 res[i] = rows[i - 1];
  90                         }
  91                 }
  92                 this.setInput(res);
  93                 int length = res.length;
  94                 this.setItemCount(length);
  95                 this.refresh();
  96         }
  97
  98         /** Directly displays bookmarks **/
  99         public void setPathsInput(Path... paths) {
 100                 this.setInput((Object[]) paths);
 101                 this.setItemCount(paths.length);
 102                 this.refresh();
 103         }
 104
 105         private class MyLazyCP implements ILazyContentProvider {
 106                 private static final long serialVersionUID = 9096550041395433128L;
 107                 private Object[] elements;
 108
 109                 public void dispose() {
 110                 }
 111
 112                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 113                         // IMPORTANT: don't forget this: an exception will be thrown if
 114                         // a selected object is not part of the results anymore.
 115                         viewer.setSelection(null);
 116                         this.elements = (Object[]) newInput;
 117                 }
 118
 119                 public void updateElement(int index) {
 120                         if (index < elements.length)
 121                                 FsTableViewer.this.replace(elements[index], index);
 122                 }
 123         }
 124 }