org.argeo.cms.ui/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.CmsNames;
   7 import org.argeo.cms.ui.CmsConstants;
   8 import org.argeo.cms.util.CmsUtils;
   9 import org.eclipse.swt.SWT;
  10 import org.eclipse.swt.events.FocusListener;
  11 import org.eclipse.swt.events.MouseListener;
  12 import org.eclipse.swt.widgets.Composite;
  13 import org.eclipse.swt.widgets.Control;
  14
  15 /** Editable text part displaying styled text. */
  16 public abstract class StyledControl extends JcrComposite implements
  17                 CmsConstants, CmsNames {
  18         private static final long serialVersionUID = -6372283442330912755L;
  19         private Control control;
  20
  21         private Composite container;
  22         private Composite box;
  23
  24         protected MouseListener mouseListener;
  25         protected FocusListener focusListener;
  26
  27         private Boolean editing = Boolean.FALSE;
  28
  29         public StyledControl(Composite parent, int swtStyle) {
  30                 super(parent, swtStyle);
  31                 setLayout(CmsUtils.noSpaceGridLayout());
  32         }
  33
  34         public StyledControl(Composite parent, int style, Item item)
  35                         throws RepositoryException {
  36                 super(parent, style, item);
  37         }
  38
  39         public StyledControl(Composite parent, int style, Item item,
  40                         boolean cacheImmediately) throws RepositoryException {
  41                 super(parent, style, item, cacheImmediately);
  42         }
  43
  44         protected abstract Control createControl(Composite box, String style);
  45
  46         protected Composite createBox(Composite parent) {
  47                 Composite box = new Composite(parent, SWT.INHERIT_DEFAULT);
  48                 setContainerLayoutData(box);
  49                 box.setLayout(CmsUtils.noSpaceGridLayout());
  50                 // new Label(box, SWT.NONE).setText("BOX");
  51                 return box;
  52         }
  53
  54         public Control getControl() {
  55                 return control;
  56         }
  57
  58         protected synchronized Boolean isEditing() {
  59                 return editing;
  60         }
  61
  62         public synchronized void startEditing() {
  63                 assert !isEditing();
  64                 editing = true;
  65                 // int height = control.getSize().y;
  66                 String style = (String) control.getData(STYLE);
  67                 clear(false);
  68                 control = createControl(box, style);
  69                 setControlLayoutData(control);
  70
  71                 // add the focus listener to the newly created edition control
  72                 if (focusListener != null)
  73                         control.addFocusListener(focusListener);
  74         }
  75
  76         public synchronized void stopEditing() {
  77                 assert isEditing();
  78                 editing = false;
  79                 String style = (String) control.getData(STYLE);
  80                 clear(false);
  81                 control = createControl(box, style);
  82                 setControlLayoutData(control);
  83         }
  84
  85         public void setStyle(String style) {
  86                 Object currentStyle = null;
  87                 if (control != null)
  88                         currentStyle = control.getData(STYLE);
  89                 if (currentStyle != null && currentStyle.equals(style))
  90                         return;
  91
  92                 // Integer preferredHeight = control != null ? control.getSize().y :
  93                 // null;
  94                 clear(true);
  95                 control = createControl(box, style);
  96                 setControlLayoutData(control);
  97
  98                 control.getParent().setData(STYLE, style + "_box");
  99                 control.getParent().getParent().setData(STYLE, style + "_container");
 100         }
 101
 102         /** To be overridden */
 103         protected void setControlLayoutData(Control control) {
 104                 control.setLayoutData(CmsUtils.fillWidth());
 105         }
 106
 107         /** To be overridden */
 108         protected void setContainerLayoutData(Composite composite) {
 109                 composite.setLayoutData(CmsUtils.fillWidth());
 110         }
 111
 112         protected void clear(boolean deep) {
 113                 if (deep) {
 114                         for (Control control : getChildren())
 115                                 control.dispose();
 116                         container = createBox(this);
 117                         box = createBox(container);
 118                 } else {
 119                         control.dispose();
 120                 }
 121         }
 122
 123         public void setMouseListener(MouseListener mouseListener) {
 124                 if (this.mouseListener != null && control != null)
 125                         control.removeMouseListener(this.mouseListener);
 126                 this.mouseListener = mouseListener;
 127                 if (control != null && this.mouseListener != null)
 128                         control.addMouseListener(mouseListener);
 129         }
 130
 131         public void setFocusListener(FocusListener focusListener) {
 132                 if (this.focusListener != null && control != null)
 133                         control.removeFocusListener(this.focusListener);
 134                 this.focusListener = focusListener;
 135                 if (control != null && this.focusListener != null)
 136                         control.addFocusListener(focusListener);
 137         }
 138 }