org.argeo.cms.ui/src/org/argeo/cms/widgets/EditableImage.java

   1 package org.argeo.cms.widgets;
   2
   3 import javax.jcr.Node;
   4 import javax.jcr.RepositoryException;
   5
   6 import org.apache.commons.logging.Log;
   7 import org.apache.commons.logging.LogFactory;
   8 import org.argeo.cms.util.CmsUtils;
   9 import org.eclipse.swt.graphics.Point;
  10 import org.eclipse.swt.widgets.Composite;
  11 import org.eclipse.swt.widgets.Control;
  12 import org.eclipse.swt.widgets.Label;
  13 import org.eclipse.swt.widgets.Text;
  14
  15 /** A stylable and editable image. */
  16 public abstract class EditableImage extends StyledControl {
  17         private static final long serialVersionUID = -5689145523114022890L;
  18         private final static Log log = LogFactory.getLog(EditableImage.class);
  19
  20         private Point preferredImageSize;
  21         private Boolean loaded = false;
  22
  23         public EditableImage(Composite parent, int swtStyle) {
  24                 super(parent, swtStyle);
  25         }
  26
  27         public EditableImage(Composite parent, int swtStyle,
  28                         Point preferredImageSize) {
  29                 super(parent, swtStyle);
  30                 this.preferredImageSize = preferredImageSize;
  31         }
  32
  33         public EditableImage(Composite parent, int style, Node node,
  34                         boolean cacheImmediately, Point preferredImageSize)
  35                         throws RepositoryException {
  36                 super(parent, style, node, cacheImmediately);
  37                 this.preferredImageSize = preferredImageSize;
  38         }
  39
  40         @Override
  41         protected void setContainerLayoutData(Composite composite) {
  42                 // composite.setLayoutData(fillWidth());
  43         }
  44
  45         @Override
  46         protected void setControlLayoutData(Control control) {
  47                 // control.setLayoutData(fillWidth());
  48         }
  49
  50         /** To be overriden. */
  51         protected String createImgTag() throws RepositoryException {
  52                 return CmsUtils.noImg(preferredImageSize != null ? preferredImageSize
  53                                 : getSize());
  54         }
  55
  56         protected Label createLabel(Composite box, String style) {
  57                 Label lbl = new Label(box, getStyle());
  58                 // lbl.setLayoutData(CmsUtils.fillWidth());
  59                 CmsUtils.markup(lbl);
  60                 CmsUtils.style(lbl, style);
  61                 if (mouseListener != null)
  62                         lbl.addMouseListener(mouseListener);
  63                 load(lbl);
  64                 return lbl;
  65         }
  66
  67         /** To be overriden. */
  68         protected synchronized Boolean load(Control control) {
  69                 String imgTag;
  70                 try {
  71                         imgTag = createImgTag();
  72                 } catch (Exception e) {
  73                         // throw new CmsException("Cannot retrieve image", e);
  74                         log.error("Cannot retrieve image", e);
  75                         imgTag = CmsUtils.noImg(preferredImageSize);
  76                         loaded = false;
  77                 }
  78
  79                 if (imgTag == null) {
  80                         loaded = false;
  81                         imgTag = CmsUtils.noImg(preferredImageSize);
  82                 } else
  83                         loaded = true;
  84                 if (control != null) {
  85                         ((Label) control).setText(imgTag);
  86                         control.setSize(preferredImageSize != null ? preferredImageSize
  87                                         : getSize());
  88                 } else {
  89                         loaded = false;
  90                 }
  91                 getParent().layout();
  92                 return loaded;
  93         }
  94
  95         public void setPreferredSize(Point size) {
  96                 this.preferredImageSize = size;
  97                 if (!loaded) {
  98                         load((Label) getControl());
  99                 }
 100         }
 101
 102         protected Text createText(Composite box, String style) {
 103                 Text text = new Text(box, getStyle());
 104                 CmsUtils.style(text, style);
 105                 return text;
 106         }
 107
 108         public Point getPreferredImageSize() {
 109                 return preferredImageSize;
 110         }
 111
 112 }