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

   1 package org.argeo.cms.swt.widgets;
   2
   3 import org.argeo.api.cms.CmsLog;
   4 import org.argeo.api.cms.ux.Cms2DSize;
   5 import org.argeo.cms.swt.CmsSwtUtils;
   6 import org.argeo.cms.ux.AbstractImageManager;
   7 import org.argeo.cms.ux.CmsUxUtils;
   8 import org.eclipse.swt.graphics.Point;
   9 import org.eclipse.swt.widgets.Composite;
  10 import org.eclipse.swt.widgets.Control;
  11 import org.eclipse.swt.widgets.Label;
  12 import org.eclipse.swt.widgets.Text;
  13
  14 /** A stylable and editable image. */
  15 public abstract class EditableImage extends StyledControl {
  16         private static final long serialVersionUID = -5689145523114022890L;
  17         private final static CmsLog log = CmsLog.getLog(EditableImage.class);
  18
  19         private Cms2DSize preferredImageSize;
  20         private Boolean loaded = false;
  21
  22         public EditableImage(Composite parent, int swtStyle) {
  23                 super(parent, swtStyle);
  24         }
  25
  26         public EditableImage(Composite parent, int swtStyle, Cms2DSize preferredImageSize) {
  27                 super(parent, swtStyle);
  28                 this.preferredImageSize = preferredImageSize;
  29         }
  30
  31         @Override
  32         protected void setContainerLayoutData(Composite composite) {
  33                 // composite.setLayoutData(fillWidth());
  34         }
  35
  36         @Override
  37         protected void setControlLayoutData(Control control) {
  38                 // control.setLayoutData(fillWidth());
  39         }
  40
  41         /** To be overriden. */
  42         protected String createImgTag() {
  43                 return noImg(preferredImageSize != null ? preferredImageSize : new Cms2DSize(getSize().x, getSize().y));
  44         }
  45
  46         protected Label createLabel(Composite box, String style) {
  47                 Label lbl = new Label(box, getStyle());
  48                 // lbl.setLayoutData(CmsUiUtils.fillWidth());
  49                 CmsSwtUtils.markup(lbl);
  50                 CmsSwtUtils.style(lbl, style);
  51                 if (mouseListener != null)
  52                         lbl.addMouseListener(mouseListener);
  53                 load(lbl);
  54                 return lbl;
  55         }
  56
  57         /** To be overriden. */
  58         protected synchronized Boolean load(Control control) {
  59                 String imgTag;
  60                 try {
  61                         imgTag = createImgTag();
  62                 } catch (Exception e) {
  63                         // throw new CmsException("Cannot retrieve image", e);
  64                         log.error("Cannot retrieve image", e);
  65                         imgTag = noImg(preferredImageSize);
  66                         loaded = false;
  67                 }
  68
  69                 if (imgTag == null) {
  70                         loaded = false;
  71                         imgTag = noImg(preferredImageSize);
  72                 } else
  73                         loaded = true;
  74                 if (control != null) {
  75                         ((Label) control).setText(imgTag);
  76                         control.setSize(preferredImageSize != null
  77                                         ? new Point(preferredImageSize.getWidth(), preferredImageSize.getHeight())
  78                                         : getSize());
  79                 } else {
  80                         loaded = false;
  81                 }
  82                 getParent().layout();
  83                 return loaded;
  84         }
  85
  86         public void setPreferredSize(Cms2DSize size) {
  87                 this.preferredImageSize = size;
  88                 if (!loaded) {
  89                         load((Label) getControl());
  90                 }
  91         }
  92
  93         protected Text createText(Composite box, String style) {
  94                 Text text = new Text(box, getStyle());
  95                 CmsSwtUtils.style(text, style);
  96                 return text;
  97         }
  98
  99         public Cms2DSize getPreferredImageSize() {
 100                 return preferredImageSize;
 101         }
 102
 103         public static String noImg(Cms2DSize size) {
 104 //              ResourceManager rm = RWT.getResourceManager();
 105 //              String noImgPath=rm.getLocation(AbstractImageManager.NO_IMAGE);
 106                 // FIXME load it via package service
 107                 String noImgPath = "";
 108                 return CmsUxUtils.img(noImgPath, size);
 109         }
 110
 111         public static String noImg() {
 112                 return noImg(AbstractImageManager.NO_IMAGE_SIZE);
 113         }
 114
 115 }