net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/dialogs/MessageLine.java

   1 package net.sourceforge.phpdt.internal.ui.dialogs;
   2
   3 import net.sourceforge.phpdt.internal.ui.PHPUiImages;
   4
   5 import org.eclipse.core.runtime.IStatus;
   6 import org.eclipse.swt.SWT;
   7 import org.eclipse.swt.custom.CLabel;
   8 import org.eclipse.swt.graphics.Color;
   9 import org.eclipse.swt.graphics.Image;
  10 import org.eclipse.swt.graphics.RGB;
  11 import org.eclipse.swt.widgets.Composite;
  12
  13 /**
  14  * A message line displaying a status.
  15  */
  16 public class MessageLine extends CLabel {
  17
  18         private static final RGB ERROR_BACKGROUND_RGB = new RGB(230, 226, 221);
  19
  20         private Color fNormalMsgAreaBackground;
  21
  22         private Color fErrorMsgAreaBackground;
  23
  24         /**
  25          * Creates a new message line as a child of the given parent.
  26          */
  27         public MessageLine(Composite parent) {
  28                 this(parent, SWT.LEFT);
  29         }
  30
  31         /**
  32          * Creates a new message line as a child of the parent and with the given
  33          * SWT stylebits.
  34          */
  35         public MessageLine(Composite parent, int style) {
  36                 super(parent, style);
  37                 fNormalMsgAreaBackground = getBackground();
  38                 fErrorMsgAreaBackground = null;
  39         }
  40
  41         private Image findImage(IStatus status) {
  42                 if (status.isOK()) {
  43                         return null;
  44                 } else if (status.matches(IStatus.ERROR)) {
  45                         return PHPUiImages.get(PHPUiImages.IMG_OBJS_ERROR);
  46                 } else if (status.matches(IStatus.WARNING)) {
  47                         return PHPUiImages.get(PHPUiImages.IMG_OBJS_WARNING);
  48                 } else if (status.matches(IStatus.INFO)) {
  49                         return PHPUiImages.get(PHPUiImages.IMG_OBJS_INFO);
  50                 }
  51                 return null;
  52         }
  53
  54         /**
  55          * Sets the message and image to the given status. <code>null</code> is a
  56          * valid argument and will set the empty text and no image
  57          */
  58         public void setErrorStatus(IStatus status) {
  59                 if (status != null) {
  60                         String message = status.getMessage();
  61                         if (message != null && message.length() > 0) {
  62                                 setText(message);
  63                                 setImage(findImage(status));
  64                                 if (fErrorMsgAreaBackground == null) {
  65                                         fErrorMsgAreaBackground = new Color(getDisplay(),
  66                                                         ERROR_BACKGROUND_RGB);
  67                                 }
  68                                 setBackground(fErrorMsgAreaBackground);
  69                                 return;
  70                         }
  71                 }
  72                 setText("");
  73                 setImage(null);
  74                 setBackground(fNormalMsgAreaBackground);
  75         }
  76
  77         /*
  78          * @see Widget#dispose()
  79          */
  80         public void dispose() {
  81                 if (fErrorMsgAreaBackground != null) {
  82                         fErrorMsgAreaBackground.dispose();
  83                         fErrorMsgAreaBackground = null;
  84                 }
  85                 super.dispose();
  86         }
  87 }