eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/element/BrowserElement.java

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.ui.element;
   5
   6 import java.net.URI;
   7
   8 import org.eclipse.swt.SWT;
   9 import org.eclipse.swt.browser.Browser;
  10 import org.eclipse.swt.events.ControlEvent;
  11 import org.eclipse.swt.events.ControlListener;
  12 import org.eclipse.swt.graphics.Rectangle;
  13 import org.eclipse.ui.forms.widgets.TableWrapData;
  14
  15
  16
  17 /**
  18  * <p>BrowserElement class.</p>
  19  *
  20  * @author n.hoffmann
  21  */
  22 public class BrowserElement extends AbstractCdmFormElement implements ControlListener{
  23
  24         private Browser browser;
  25
  26         private String imageUriString;
  27
  28         /**
  29          * <p>Constructor for BrowserElement.</p>
  30          *
  31          * @param style a int.
  32          * @param formFactory a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  33          * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.
  34          * @param imageUri a {@link java.net.URI} object.
  35          */
  36         protected BrowserElement(CdmFormFactory formFactory, ICdmFormElement parentElement, URI imageUri, int style) {
  37                 super(formFactory, parentElement);
  38                 formFactory.createLabel(getLayoutComposite(), "");
  39
  40                 browser = new Browser(getLayoutComposite(), SWT.NONE);
  41                 addControl(browser);
  42
  43                 getLayoutComposite().setLayoutData(LayoutConstants.FILL());
  44
  45
  46                 layoutBrowser();
  47
  48                 showBrowser();
  49                 browser.addControlListener(this);
  50
  51                 this.setImageUri(imageUri);
  52         }
  53
  54         private void layoutBrowser() {
  55                 TableWrapData layoutData = LayoutConstants.FILL();
  56                 layoutData.heightHint = 1000;
  57
  58                 browser.setLayoutData(layoutData);
  59         }
  60
  61         private void showBrowser() {
  62
  63                 String html = "";
  64                 html = "<HTML><HEAD><TITLE></TITLE></HEAD><BODY marginwidth=0 marginheight=0 leftmargin=0 topmargin=0>";
  65                 html += "<img width=\"" + calculateWidth() + "\" src=\"" + getImageUriString() + "\" />";
  66                 html += "</BODY></HTML>";
  67
  68                 browser.setText(html);
  69         }
  70
  71         /**
  72          * <p>calculateWidth</p>
  73          *
  74          * @return a int.
  75          */
  76         public int calculateWidth() {
  77                 Rectangle boundaries = browser.getBounds();
  78                 return boundaries.width;
  79         }
  80
  81         @Override
  82     public void controlMoved(ControlEvent e) {
  83                 showBrowser();
  84         }
  85
  86         @Override
  87     public void controlResized(ControlEvent e) {
  88                 showBrowser();
  89         }
  90
  91         /**
  92          * <p>setImageUri</p>
  93          *
  94          * @param imageUri the imageUri to set
  95          */
  96         public void setImageUri(URI imageUri) {
  97                 setImageUriString(imageUri != null ? imageUri.toString() : "");
  98         }
  99
 100         /**
 101          * <p>Setter for the field <code>imageUriString</code>.</p>
 102          *
 103          * @param imageUriString a {@link java.lang.String} object.
 104          */
 105         public void setImageUriString(String imageUriString){
 106                 this.imageUriString = imageUriString;
 107                 showBrowser();
 108         }
 109
 110         /**
 111          * <p>Getter for the field <code>imageUriString</code>.</p>
 112          *
 113          * @return the imageUri
 114          */
 115         public String getImageUriString() {
 116                 return imageUriString;
 117         }
 118 }