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  * <p>BrowserElement class.</p>
  18  *
  19  * @author n.hoffmann
  20  * @version $Id: $
  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         /**
  55          *
  56          */
  57         private void layoutBrowser() {
  58                 TableWrapData layoutData = LayoutConstants.FILL();
  59                 layoutData.heightHint = 1000;
  60
  61                 browser.setLayoutData(layoutData);
  62         }
  63
  64         /**
  65          *
  66          */
  67         private void showBrowser() {
  68
  69                 String html = "";
  70                 html = "<HTML><HEAD><TITLE></TITLE></HEAD><BODY marginwidth=0 marginheight=0 leftmargin=0 topmargin=0>";
  71                 html += "<img width=\"" + calculateWidth() + "\" src=\"" + getImageUriString() + "\" />";
  72                 html += "</BODY></HTML>";
  73
  74                 browser.setText(html);
  75         }
  76
  77         /**
  78          * <p>calculateWidth</p>
  79          *
  80          * @return a int.
  81          */
  82         public int calculateWidth() {
  83                 Rectangle boundaries = browser.getBounds();
  84                 return boundaries.width;
  85         }
  86
  87         /* (non-Javadoc)
  88          * @see org.eclipse.swt.events.ControlListener#controlMoved(org.eclipse.swt.events.ControlEvent)
  89          */
  90         /** {@inheritDoc} */
  91         public void controlMoved(ControlEvent e) {
  92                 showBrowser();
  93         }
  94
  95         /* (non-Javadoc)
  96          * @see org.eclipse.swt.events.ControlListener#controlResized(org.eclipse.swt.events.ControlEvent)
  97          */
  98         /** {@inheritDoc} */
  99         public void controlResized(ControlEvent e) {
 100                 showBrowser();
 101         }
 102
 103         /**
 104          * <p>setImageUri</p>
 105          *
 106          * @param imageUri the imageUri to set
 107          */
 108         public void setImageUri(URI imageUri) {
 109                 setImageUriString(imageUri != null ? imageUri.toString() : "");
 110         }
 111
 112         /**
 113          * <p>Setter for the field <code>imageUriString</code>.</p>
 114          *
 115          * @param imageUriString a {@link java.lang.String} object.
 116          */
 117         public void setImageUriString(String imageUriString){
 118                 this.imageUriString = imageUriString;
 119                 showBrowser();
 120         }
 121
 122         /**
 123          * <p>Getter for the field <code>imageUriString</code>.</p>
 124          *
 125          * @return the imageUri
 126          */
 127         public String getImageUriString() {
 128                 return imageUriString;
 129         }
 130
 131 }