bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/widgets/FileOrDirectorySelectionWidget.java

   1 package org.simantics.utils.ui.widgets;
   2
   3 import java.io.File;
   4 import java.util.ArrayList;
   5 import java.util.List;
   6
   7 import org.eclipse.jface.layout.GridDataFactory;
   8 import org.eclipse.swt.SWT;
   9 import org.eclipse.swt.events.ModifyEvent;
  10 import org.eclipse.swt.events.ModifyListener;
  11 import org.eclipse.swt.events.SelectionAdapter;
  12 import org.eclipse.swt.events.SelectionEvent;
  13 import org.eclipse.swt.layout.GridData;
  14 import org.eclipse.swt.layout.GridLayout;
  15 import org.eclipse.swt.widgets.Button;
  16 import org.eclipse.swt.widgets.Composite;
  17 import org.eclipse.swt.widgets.Group;
  18 import org.eclipse.swt.widgets.Text;
  19
  20 public abstract class FileOrDirectorySelectionWidget extends Composite{
  21
  22         Text fileText;
  23         String filename[];
  24
  25         private List<FileSelectionListener> listeners = new ArrayList<FileSelectionListener>();
  26
  27         public FileOrDirectorySelectionWidget(Composite parent, String name,int style) {
  28                 super(parent, style);
  29                 this.setLayout(new GridLayout(1,false));
  30                 GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.TOP).applyTo(this);
  31
  32                 Group fileGroup = new Group(this, SWT.NONE);
  33                 GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.TOP).applyTo(fileGroup);
  34
  35                 fileGroup.setText(name);
  36                 fileGroup.setLayout(new GridLayout(2, false));
  37
  38                 fileText = new Text(fileGroup, SWT.SINGLE|SWT.BORDER);
  39                 GridData data = new GridData();
  40                 data.grabExcessHorizontalSpace = true;
  41                 data.horizontalAlignment = SWT.FILL;
  42                 fileText.setLayoutData(data);
  43
  44                 Button browseButton = new Button(fileGroup, SWT.PUSH);
  45                 browseButton.setText("Browse");
  46                 data = new GridData();
  47                 browseButton.setLayoutData(data);
  48
  49
  50
  51                 browseButton.addSelectionListener(new SelectionAdapter() {
  52                         @Override
  53                         public void widgetSelected(SelectionEvent e) {
  54                                 String[] name = openDialog();
  55                                 if (name != null) {
  56                                         setFilename(name);
  57                                 }
  58                         }
  59                 });
  60
  61                 fileText.addModifyListener(new ModifyListener() {
  62
  63                         @Override
  64                         public void modifyText(ModifyEvent e) {
  65                                 String file = fileText.getText();
  66                                 setFilename(file.split(","));
  67
  68                         }
  69                 });
  70         }
  71
  72         protected abstract String[] openDialog();
  73
  74         protected abstract boolean isValid(File file);
  75
  76         protected void setFilename(String[] filename) {
  77                 String text = "";
  78                 for (String s : filename) {
  79                         text += s + ",";
  80                 }
  81                 if (text.length() > 2)
  82                         text = text.substring(0, text.length() - 1);
  83
  84                 if (!text.equals(fileText.getText()))
  85                         fileText.setText(text);
  86
  87                 boolean accept = true;
  88                 for (String s : filename){
  89                         File file = new File(s);
  90                         if (!isValid(file)) {
  91                                 accept = false;
  92                                 break;
  93                         }
  94                 }
  95                 if (accept)
  96                         this.filename = filename;
  97                 else
  98                         this.filename = null;
  99
 100                 for (FileSelectionListener l : listeners) {
 101                         l.fileSelected(this, this.filename);
 102                 }
 103         }
 104
 105         public String[] getFilename() {
 106                 return filename;
 107         }
 108
 109         public void addListener(FileSelectionListener listener) {
 110                 this.listeners.add(listener);
 111         }
 112
 113         public void removeListener(FileSelectionListener listener) {
 114                 this.listeners.remove(listener);
 115         }
 116
 117
 118 }