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 import eu.etaxonomy.taxeditor.ui.campanula.compatibility.ICdmFormElement;
  16
  17
  18 /**
  19  * <p>BrowserElement class.</p>
  20  *
  21  * @author n.hoffmann
  22  * @version $Id: $
  23  */
  24 public class BrowserElement extends AbstractCdmFormElement implements ControlListener{
  25
  26         private Browser browser;
  27
  28         private String imageUriString;
  29
  30         /**
  31          * <p>Constructor for BrowserElement.</p>
  32          *
  33          * @param style a int.
  34          * @param formFactory a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  35          * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.
  36          * @param imageUri a {@link java.net.URI} object.
  37          */
  38         protected BrowserElement(CdmFormFactory formFactory, ICdmFormElement parentElement, URI imageUri, int style) {
  39                 super(formFactory, parentElement);
  40                 formFactory.createLabel(getLayoutComposite(), "");
  41
  42                 browser = new Browser(getLayoutComposite(), SWT.NONE);
  43                 addControl(browser);
  44
  45                 getLayoutComposite().setLayoutData(LayoutConstants.FILL());
  46
  47
  48                 layoutBrowser();
  49
  50                 showBrowser();
  51                 browser.addControlListener(this);
  52
  53                 this.setImageUri(imageUri);
  54         }
  55
  56         /**
  57          *
  58          */
  59         private void layoutBrowser() {
  60                 TableWrapData layoutData = LayoutConstants.FILL();
  61                 layoutData.heightHint = 1000;
  62
  63                 browser.setLayoutData(layoutData);
  64         }
  65
  66         /**
  67          *
  68          */
  69         private void showBrowser() {
  70
  71                 String html = "";
  72                 html = "<HTML><HEAD><TITLE></TITLE></HEAD><BODY marginwidth=0 marginheight=0 leftmargin=0 topmargin=0>";
  73                 html += "<img width=\"" + calculateWidth() + "\" src=\"" + getImageUriString() + "\" />";
  74                 html += "</BODY></HTML>";
  75
  76                 browser.setText(html);
  77         }
  78
  79         /**
  80          * <p>calculateWidth</p>
  81          *
  82          * @return a int.
  83          */
  84         public int calculateWidth() {
  85                 Rectangle boundaries = browser.getBounds();
  86                 return boundaries.width;
  87         }
  88
  89         /* (non-Javadoc)
  90          * @see org.eclipse.swt.events.ControlListener#controlMoved(org.eclipse.swt.events.ControlEvent)
  91          */
  92         /** {@inheritDoc} */
  93         public void controlMoved(ControlEvent e) {
  94                 showBrowser();
  95         }
  96
  97         /* (non-Javadoc)
  98          * @see org.eclipse.swt.events.ControlListener#controlResized(org.eclipse.swt.events.ControlEvent)
  99          */
 100         /** {@inheritDoc} */
 101         public void controlResized(ControlEvent e) {
 102                 showBrowser();
 103         }
 104
 105         /**
 106          * <p>setImageUri</p>
 107          *
 108          * @param imageUri the imageUri to set
 109          */
 110         public void setImageUri(URI imageUri) {
 111                 setImageUriString(imageUri != null ? imageUri.toString() : "");
 112         }
 113
 114         /**
 115          * <p>Setter for the field <code>imageUriString</code>.</p>
 116          *
 117          * @param imageUriString a {@link java.lang.String} object.
 118          */
 119         public void setImageUriString(String imageUriString){
 120                 this.imageUriString = imageUriString;
 121                 showBrowser();
 122         }
 123
 124         /**
 125          * <p>Getter for the field <code>imageUriString</code>.</p>
 126          *
 127          * @return the imageUri
 128          */
 129         public String getImageUriString() {
 130                 return imageUriString;
 131         }
 132
 133 }