eclipseprojects/eu.etaxonomy.taxeditor.prototype2/src/eu/etaxonomy/taxeditor/prototype2/view/nameviewersupport/NameViewerVerifyListener.java

   1 package eu.etaxonomy.taxeditor.prototype2.view.nameviewersupport;
   2
   3 import java.util.Scanner;
   4
   5 import org.eclipse.swt.custom.StyledText;
   6 import org.eclipse.swt.events.VerifyEvent;
   7 import org.eclipse.swt.events.VerifyListener;
   8
   9 import eu.etaxonomy.cdm.model.taxon.Taxon;
  10 import eu.etaxonomy.taxeditor.prototype2.controller.ActionAddSynonymToTaxon;
  11
  12 /**
  13  * Checks text entered into a name viewer for line breaks, creates
  14  *  new synonyms accordingly
  15  *
  16  * @author p.ciardelli
  17  */
  18 public class NameViewerVerifyListener implements VerifyListener {
  19
  20         private Taxon taxon;
  21
  22         NameViewerVerifyListener(Taxon taxon) {
  23                 this.taxon = taxon;
  24         }
  25
  26         /*
  27          * Checks for 3 conditions of name viewer text:
  28          *   1) no line breaks in text
  29          *   2) line break at the end of the text
  30          *   3) line break in the middle of the text
  31          *
  32          * (non-Javadoc)
  33          * @see org.eclipse.swt.events.VerifyListener#verifyText(org.eclipse.swt.events.VerifyEvent)
  34          */
  35         public void verifyText(VerifyEvent e) {
  36
  37                 String verifyText = e.text;
  38
  39                 StyledText styledText = (StyledText)e.widget;
  40                 String widgetText = styledText.getText();
  41                 int cursorPosition = styledText.getCaretOffset();
  42
  43                 // Is there a line break in verifyText?
  44                 if (!verifyText.contains(System.getProperty("line.separator")))
  45                         // Parse text normally
  46                         return;
  47
  48                 // Don't add verifyText without further processing
  49                 e.doit = false;
  50
  51                 // If user has entered return at the end of the line,
  52                 //  make a new, empty synonym
  53                 if (widgetText.length() == cursorPosition &&
  54                                 verifyText.equals(System.getProperty("line.separator"))) {
  55                         new ActionAddSynonymToTaxon(taxon, "").run();
  56                         return;
  57                 }
  58
  59                 // Concatenate old and new texts
  60                 String textForSplitting = widgetText.substring(0, cursorPosition)
  61                                 + verifyText
  62                                 + widgetText.substring(cursorPosition);
  63
  64                 // Split on line breaks
  65                 Scanner scanner = new Scanner( textForSplitting );
  66                 scanner.useDelimiter (System.getProperty("line.separator"));
  67
  68                 // Put first string into name viewer
  69                 styledText.setText(scanner.next());
  70
  71                 // Start new synonyms with the rest
  72                 while (scanner.hasNext())
  73                         new ActionAddSynonymToTaxon(taxon, scanner.next()).run();
  74         }
  75 }