widgets/EditableImage.java

   1 package org.argeo.cms.ui.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.api.cms.Cms2DSize;
   9 import org.argeo.cms.swt.CmsSwtUtils;
  10 import org.argeo.cms.ui.util.CmsUiUtils;
  11 import org.eclipse.swt.graphics.Point;
  12 import org.eclipse.swt.widgets.Composite;
  13 import org.eclipse.swt.widgets.Control;
  14 import org.eclipse.swt.widgets.Label;
  15 import org.eclipse.swt.widgets.Text;
  16
  17 /** A stylable and editable image. */
  18 public abstract class EditableImage extends StyledControl {
  19         private static final long serialVersionUID = -5689145523114022890L;
  20         private final static Log log = LogFactory.getLog(EditableImage.class);
  21
  22         private Cms2DSize preferredImageSize;
  23         private Boolean loaded = false;
  24
  25         public EditableImage(Composite parent, int swtStyle) {
  26                 super(parent, swtStyle);
  27         }
  28
  29         public EditableImage(Composite parent, int swtStyle, Cms2DSize preferredImageSize) {
  30                 super(parent, swtStyle);
  31                 this.preferredImageSize = preferredImageSize;
  32         }
  33
  34         public EditableImage(Composite parent, int style, Node node, boolean cacheImmediately, Cms2DSize 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 CmsUiUtils
  53                                 .noImg(preferredImageSize != null ? preferredImageSize : new Cms2DSize(getSize().x, getSize().y));
  54         }
  55
  56         protected Label createLabel(Composite box, String style) {
  57                 Label lbl = new Label(box, getStyle());
  58                 // lbl.setLayoutData(CmsUiUtils.fillWidth());
  59                 CmsSwtUtils.markup(lbl);
  60                 CmsSwtUtils.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 = CmsUiUtils.noImg(preferredImageSize);
  76                         loaded = false;
  77                 }
  78
  79                 if (imgTag == null) {
  80                         loaded = false;
  81                         imgTag = CmsUiUtils.noImg(preferredImageSize);
  82                 } else
  83                         loaded = true;
  84                 if (control != null) {
  85                         ((Label) control).setText(imgTag);
  86                         control.setSize(preferredImageSize != null
  87                                         ? new Point(preferredImageSize.getWidth(), preferredImageSize.getHeight())
  88                                         : getSize());
  89                 } else {
  90                         loaded = false;
  91                 }
  92                 getParent().layout();
  93                 return loaded;
  94         }
  95
  96         public void setPreferredSize(Cms2DSize size) {
  97                 this.preferredImageSize = size;
  98                 if (!loaded) {
  99                         load((Label) getControl());
 100                 }
 101         }
 102
 103         protected Text createText(Composite box, String style) {
 104                 Text text = new Text(box, getStyle());
 105                 CmsSwtUtils.style(text, style);
 106                 return text;
 107         }
 108
 109         public Cms2DSize getPreferredImageSize() {
 110                 return preferredImageSize;
 111         }
 112
 113 }