swt/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/widgets/StyledControl.java

   1 package org.argeo.cms.ui.widgets;
   2
   3 import javax.jcr.Item;
   4
   5 import org.argeo.cms.swt.CmsSwtUtils;
   6 import org.argeo.eclipse.ui.specific.EclipseUiSpecificUtils;
   7 import org.eclipse.swt.SWT;
   8 import org.eclipse.swt.events.FocusListener;
   9 import org.eclipse.swt.events.MouseListener;
  10 import org.eclipse.swt.widgets.Composite;
  11 import org.eclipse.swt.widgets.Control;
  12
  13 /** Editable text part displaying styled text. */
  14 public abstract class StyledControl extends JcrComposite {
  15         private static final long serialVersionUID = -6372283442330912755L;
  16         private Control control;
  17
  18         private Composite container;
  19         private Composite box;
  20
  21         protected MouseListener mouseListener;
  22         protected FocusListener focusListener;
  23
  24         private Boolean editing = Boolean.FALSE;
  25
  26         private Composite ancestorToLayout;
  27
  28         public StyledControl(Composite parent, int swtStyle) {
  29                 super(parent, swtStyle);
  30                 setLayout(CmsSwtUtils.noSpaceGridLayout());
  31         }
  32
  33         public StyledControl(Composite parent, int style, Item item) {
  34                 super(parent, style, item);
  35         }
  36
  37         public StyledControl(Composite parent, int style, Item item, boolean cacheImmediately) {
  38                 super(parent, style, item, cacheImmediately);
  39         }
  40
  41         protected abstract Control createControl(Composite box, String style);
  42
  43         protected Composite createBox() {
  44                 Composite box = new Composite(container, SWT.INHERIT_DEFAULT);
  45                 setContainerLayoutData(box);
  46                 box.setLayout(CmsSwtUtils.noSpaceGridLayout(3));
  47                 return box;
  48         }
  49
  50         protected Composite createContainer() {
  51                 Composite container = new Composite(this, SWT.INHERIT_DEFAULT);
  52                 setContainerLayoutData(container);
  53                 container.setLayout(CmsSwtUtils.noSpaceGridLayout());
  54                 return container;
  55         }
  56
  57         public Control getControl() {
  58                 return control;
  59         }
  60
  61         protected synchronized Boolean isEditing() {
  62                 return editing;
  63         }
  64
  65         public synchronized void startEditing() {
  66                 assert !isEditing();
  67                 editing = true;
  68                 // int height = control.getSize().y;
  69                 String style = (String) EclipseUiSpecificUtils.getStyleData(control);
  70                 clear(false);
  71                 refreshControl(style);
  72
  73                 // add the focus listener to the newly created edition control
  74                 if (focusListener != null)
  75                         control.addFocusListener(focusListener);
  76         }
  77
  78         public synchronized void stopEditing() {
  79                 assert isEditing();
  80                 editing = false;
  81                 String style = (String) EclipseUiSpecificUtils.getStyleData(control);
  82                 clear(false);
  83                 refreshControl(style);
  84         }
  85
  86         protected void refreshControl(String style) {
  87                 control = createControl(box, style);
  88                 setControlLayoutData(control);
  89                 if (ancestorToLayout != null)
  90                         ancestorToLayout.layout(true, true);
  91                 else
  92                         getParent().layout(true, true);
  93         }
  94
  95         public void setStyle(String style) {
  96                 Object currentStyle = null;
  97                 if (control != null)
  98                         currentStyle = EclipseUiSpecificUtils.getStyleData(control);
  99                 if (currentStyle != null && currentStyle.equals(style))
 100                         return;
 101
 102                 clear(true);
 103                 refreshControl(style);
 104
 105                 if (style != null) {
 106                         CmsSwtUtils.style(box, style + "_box");
 107                         CmsSwtUtils.style(container, style + "_container");
 108                 }
 109         }
 110
 111         /** To be overridden */
 112         protected void setControlLayoutData(Control control) {
 113                 control.setLayoutData(CmsSwtUtils.fillWidth());
 114         }
 115
 116         /** To be overridden */
 117         protected void setContainerLayoutData(Composite composite) {
 118                 composite.setLayoutData(CmsSwtUtils.fillWidth());
 119         }
 120
 121         protected void clear(boolean deep) {
 122                 if (deep) {
 123                         for (Control control : getChildren())
 124                                 control.dispose();
 125                         container = createContainer();
 126                         box = createBox();
 127                 } else {
 128                         control.dispose();
 129                 }
 130         }
 131
 132         public void setMouseListener(MouseListener mouseListener) {
 133                 if (this.mouseListener != null && control != null)
 134                         control.removeMouseListener(this.mouseListener);
 135                 this.mouseListener = mouseListener;
 136                 if (control != null && this.mouseListener != null)
 137                         control.addMouseListener(mouseListener);
 138         }
 139
 140         public void setFocusListener(FocusListener focusListener) {
 141                 if (this.focusListener != null && control != null)
 142                         control.removeFocusListener(this.focusListener);
 143                 this.focusListener = focusListener;
 144                 if (control != null && this.focusListener != null)
 145                         control.addFocusListener(focusListener);
 146         }
 147
 148         public void setAncestorToLayout(Composite ancestorToLayout) {
 149                 this.ancestorToLayout = ancestorToLayout;
 150         }
 151
 152 }