taxeditor-editor/src/main/java/eu/etaxonomy/taxeditor/forms/BrowserElement.java

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.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.forms.CdmFormFactory} object.
  32          * @param parentElement a {@link eu.etaxonomy.taxeditor.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
  41                 getLayoutComposite().setLayoutData(CdmFormFactory.FILL());
  42
  43
  44                 layoutBrowser();
  45
  46                 showBrowser();
  47                 browser.addControlListener(this);
  48
  49                 this.setImageUri(imageUri);
  50         }
  51
  52         /**
  53          *
  54          */
  55         private void layoutBrowser() {
  56                 TableWrapData layoutData = CdmFormFactory.FILL();
  57                 layoutData.heightHint = 1000;
  58
  59                 browser.setLayoutData(layoutData);
  60         }
  61
  62         /**
  63          *
  64          */
  65         private void showBrowser() {
  66
  67                 String html = "";
  68                 html = "<HTML><HEAD><TITLE></TITLE></HEAD><BODY marginwidth=0 marginheight=0 leftmargin=0 topmargin=0>";
  69                 html += "<img width=\"" + calculateWidth() + "\" src=\"" + getImageUriString() + "\" />";
  70                 html += "</BODY></HTML>";
  71
  72                 browser.setText(html);
  73         }
  74
  75         /**
  76          * <p>calculateWidth</p>
  77          *
  78          * @return a int.
  79          */
  80         public int calculateWidth() {
  81                 Rectangle boundaries = browser.getBounds();
  82                 return boundaries.width;
  83         }
  84
  85         /* (non-Javadoc)
  86          * @see org.eclipse.swt.events.ControlListener#controlMoved(org.eclipse.swt.events.ControlEvent)
  87          */
  88         /** {@inheritDoc} */
  89         public void controlMoved(ControlEvent e) {
  90                 showBrowser();
  91         }
  92
  93         /* (non-Javadoc)
  94          * @see org.eclipse.swt.events.ControlListener#controlResized(org.eclipse.swt.events.ControlEvent)
  95          */
  96         /** {@inheritDoc} */
  97         public void controlResized(ControlEvent e) {
  98                 showBrowser();
  99         }
 100
 101         /**
 102          * <p>setImageUri</p>
 103          *
 104          * @param imageUri the imageUri to set
 105          */
 106         public void setImageUri(URI imageUri) {
 107                 setImageUriString(imageUri != null ? imageUri.toString() : "");
 108         }
 109
 110         /**
 111          * <p>Setter for the field <code>imageUriString</code>.</p>
 112          *
 113          * @param imageUriString a {@link java.lang.String} object.
 114          */
 115         public void setImageUriString(String imageUriString){
 116                 this.imageUriString = imageUriString;
 117                 showBrowser();
 118         }
 119
 120         /**
 121          * <p>Getter for the field <code>imageUriString</code>.</p>
 122          *
 123          * @return the imageUri
 124          */
 125         public String getImageUriString() {
 126                 return imageUriString;
 127         }
 128
 129         /** {@inheritDoc} */
 130         public void setSelected(boolean selected) {
 131
 132         }
 133
 134 }