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