org.argeo.cms/src/org/argeo/cms/widgets/StyledControl.java

   1 package org.argeo.cms.widgets;
   2
   3 import javax.jcr.Item;
   4 import javax.jcr.RepositoryException;
   5
   6 import org.argeo.cms.CmsConstants;
   7 import org.argeo.cms.CmsNames;
   8 import org.argeo.cms.CmsUtils;
   9 import org.eclipse.swt.SWT;
  10 import org.eclipse.swt.events.MouseListener;
  11 import org.eclipse.swt.widgets.Composite;
  12 import org.eclipse.swt.widgets.Control;
  13
  14 /** Editable text part displaying styled text. */
  15 public abstract class StyledControl extends JcrComposite implements
  16                 CmsConstants, CmsNames {
  17         private static final long serialVersionUID = -6372283442330912755L;
  18         private Control control;
  19
  20         private Composite container;
  21         private Composite box;
  22
  23         protected MouseListener mouseListener;
  24
  25         private Boolean editing = Boolean.FALSE;
  26
  27         public StyledControl(Composite parent, int swtStyle) {
  28                 super(parent, swtStyle);
  29                 setLayout(CmsUtils.noSpaceGridLayout());
  30         }
  31
  32         public StyledControl(Composite parent, int style, Item item)
  33                         throws RepositoryException {
  34                 super(parent, style, item);
  35         }
  36
  37         public StyledControl(Composite parent, int style, Item item,
  38                         boolean cacheImmediately) throws RepositoryException {
  39                 super(parent, style, item, cacheImmediately);
  40         }
  41
  42         protected abstract Control createControl(Composite box, String style);
  43
  44         protected Composite createBox(Composite parent) {
  45                 Composite box = new Composite(parent, SWT.INHERIT_DEFAULT);
  46                 setContainerLayoutData(box);
  47                 box.setLayout(CmsUtils.noSpaceGridLayout());
  48                 // new Label(box, SWT.NONE).setText("BOX");
  49                 return box;
  50         }
  51
  52         public Control getControl() {
  53                 return control;
  54         }
  55
  56         protected synchronized Boolean isEditing() {
  57                 return editing;
  58         }
  59
  60         public synchronized void startEditing() {
  61                 assert !isEditing();
  62                 editing = true;
  63                 // int height = control.getSize().y;
  64                 String style = (String) control.getData(STYLE);
  65                 clear(false);
  66                 control = createControl(box, style);
  67                 setControlLayoutData(control);
  68         }
  69
  70         public synchronized void stopEditing() {
  71                 assert isEditing();
  72                 editing = false;
  73                 String style = (String) control.getData(STYLE);
  74                 clear(false);
  75                 control = createControl(box, style);
  76                 setControlLayoutData(control);
  77         }
  78
  79         public void setStyle(String style) {
  80                 Object currentStyle = null;
  81                 if (control != null)
  82                         currentStyle = control.getData(STYLE);
  83                 if (currentStyle != null && currentStyle.equals(style))
  84                         return;
  85
  86                 // Integer preferredHeight = control != null ? control.getSize().y :
  87                 // null;
  88                 clear(true);
  89                 control = createControl(box, style);
  90                 setControlLayoutData(control);
  91
  92                 control.getParent().setData(STYLE, style + "_box");
  93                 control.getParent().getParent().setData(STYLE, style + "_container");
  94         }
  95
  96         /** To be overridden */
  97         protected void setControlLayoutData(Control control) {
  98                 control.setLayoutData(CmsUtils.fillWidth());
  99         }
 100
 101         /** To be overridden */
 102         protected void setContainerLayoutData(Composite composite) {
 103                 composite.setLayoutData(CmsUtils.fillWidth());
 104         }
 105
 106         protected void clear(boolean deep) {
 107                 if (deep) {
 108                         for (Control control : getChildren())
 109                                 control.dispose();
 110                         container = createBox(this);
 111                         box = createBox(container);
 112                 } else {
 113                         control.dispose();
 114                 }
 115         }
 116
 117         public void setMouseListener(MouseListener mouseListener) {
 118                 if (this.mouseListener != null && control != null)
 119                         control.removeMouseListener(this.mouseListener);
 120                 this.mouseListener = mouseListener;
 121                 if (control != null && this.mouseListener != null)
 122                         control.addMouseListener(mouseListener);
 123         }
 124 }