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

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.ui.forms;
   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  * <p>BrowserElement class.</p>
  17  *
  18  * @author n.hoffmann
  19  * @version $Id: $
  20  */
  21 public class BrowserElement extends AbstractCdmFormElement implements ControlListener{
  22
  23         private Browser browser;
  24
  25         private String imageUriString;
  26
  27         /**
  28          * <p>Constructor for BrowserElement.</p>
  29          *
  30          * @param style a int.
  31          * @param formFactory a {@link eu.etaxonomy.taxeditor.ui.forms.CdmFormFactory} object.
  32          * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.forms.ICdmFormElement} object.
  33          * @param imageUri a {@link java.net.URI} object.
  34          */
  35         protected BrowserElement(CdmFormFactory formFactory, ICdmFormElement parentElement, URI imageUri, int style) {
  36                 super(formFactory, parentElement);
  37                 formFactory.createLabel(getLayoutComposite(), "");
  38
  39                 browser = new Browser(getLayoutComposite(), SWT.NONE);
  40                 addControl(browser);
  41
  42                 getLayoutComposite().setLayoutData(CdmFormFactory.FILL());
  43
  44
  45                 layoutBrowser();
  46
  47                 showBrowser();
  48                 browser.addControlListener(this);
  49
  50                 this.setImageUri(imageUri);
  51         }
  52
  53         /**
  54          *
  55          */
  56         private void layoutBrowser() {
  57                 TableWrapData layoutData = CdmFormFactory.FILL();
  58                 layoutData.heightHint = 1000;
  59
  60                 browser.setLayoutData(layoutData);
  61         }
  62
  63         /**
  64          *
  65          */
  66         private void showBrowser() {
  67
  68                 String html = "";
  69                 html = "<HTML><HEAD><TITLE></TITLE></HEAD><BODY marginwidth=0 marginheight=0 leftmargin=0 topmargin=0>";
  70                 html += "<img width=\"" + calculateWidth() + "\" src=\"" + getImageUriString() + "\" />";
  71                 html += "</BODY></HTML>";
  72
  73                 browser.setText(html);
  74         }
  75
  76         /**
  77          * <p>calculateWidth</p>
  78          *
  79          * @return a int.
  80          */
  81         public int calculateWidth() {
  82                 Rectangle boundaries = browser.getBounds();
  83                 return boundaries.width;
  84         }
  85
  86         /* (non-Javadoc)
  87          * @see org.eclipse.swt.events.ControlListener#controlMoved(org.eclipse.swt.events.ControlEvent)
  88          */
  89         /** {@inheritDoc} */
  90         public void controlMoved(ControlEvent e) {
  91                 showBrowser();
  92         }
  93
  94         /* (non-Javadoc)
  95          * @see org.eclipse.swt.events.ControlListener#controlResized(org.eclipse.swt.events.ControlEvent)
  96          */
  97         /** {@inheritDoc} */
  98         public void controlResized(ControlEvent e) {
  99                 showBrowser();
 100         }
 101
 102         /**
 103          * <p>setImageUri</p>
 104          *
 105          * @param imageUri the imageUri to set
 106          */
 107         public void setImageUri(URI imageUri) {
 108                 setImageUriString(imageUri != null ? imageUri.toString() : "");
 109         }
 110
 111         /**
 112          * <p>Setter for the field <code>imageUriString</code>.</p>
 113          *
 114          * @param imageUriString a {@link java.lang.String} object.
 115          */
 116         public void setImageUriString(String imageUriString){
 117                 this.imageUriString = imageUriString;
 118                 showBrowser();
 119         }
 120
 121         /**
 122          * <p>Getter for the field <code>imageUriString</code>.</p>
 123          *
 124          * @return the imageUri
 125          */
 126         public String getImageUriString() {
 127                 return imageUriString;
 128         }
 129
 130 }