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

   1 package net.sourceforge.phpdt.externaltools.internal.ui;
   2
   3 /**********************************************************************
   4 Copyright (c) 2000, 2002 IBM Corp.  All rights reserved.
   5 This file is made available under the terms of the Common Public License v1.0
   6 which accompanies this distribution, and is available at
   7 http://www.eclipse.org/legal/cpl-v10.html
   8 **********************************************************************/
   9
  10 import org.eclipse.core.runtime.IStatus;
  11
  12 import org.eclipse.swt.SWT;
  13 import org.eclipse.swt.custom.CLabel;
  14 import org.eclipse.swt.graphics.Color;
  15 import org.eclipse.swt.graphics.Image;
  16 import org.eclipse.swt.graphics.RGB;
  17 import org.eclipse.swt.widgets.Composite;
  18 import org.eclipse.ui.ISharedImages;
  19 import org.eclipse.ui.PlatformUI;
  20
  21 /**
  22  * A message line displaying a status.
  23  */
  24 public class MessageLine extends CLabel {
  25
  26         private static final RGB ERROR_BACKGROUND_RGB = new RGB(230, 226, 221);
  27
  28         private Color fNormalMsgAreaBackground;
  29         private Color fErrorMsgAreaBackground;
  30
  31         /**
  32          * Creates a new message line as a child of the given parent.
  33          */
  34         public MessageLine(Composite parent) {
  35                 this(parent, SWT.LEFT);
  36         }
  37
  38         /**
  39          * Creates a new message line as a child of the parent and with the given SWT stylebits.
  40          */
  41         public MessageLine(Composite parent, int style) {
  42                 super(parent, style);
  43                 fNormalMsgAreaBackground= getBackground();
  44                 fErrorMsgAreaBackground= null;
  45         }
  46
  47
  48         private Image findImage(IStatus status) {
  49                 if (status.isOK()) {
  50                         return null;
  51                 } else if (status.matches(IStatus.ERROR)) {
  52                         return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_ERROR_TSK);
  53                 } else if (status.matches(IStatus.WARNING)) {
  54                         return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_WARN_TSK);
  55                 } else if (status.matches(IStatus.INFO)) {
  56                         return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_INFO_TSK);
  57                 }
  58                 return null;
  59         }
  60
  61         /**
  62          * Sets the message and image to the given status.
  63          * <code>null</code> is a valid argument and will set the empty text and no image
  64          */
  65         public void setErrorStatus(IStatus status) {
  66                 if (status != null) {
  67                         String message= status.getMessage();
  68                         if (message != null && message.length() > 0) {
  69                                 setText(message);
  70                                 setImage(findImage(status));
  71                                 if (fErrorMsgAreaBackground == null) {
  72                                         fErrorMsgAreaBackground= new Color(getDisplay(), ERROR_BACKGROUND_RGB);
  73                                 }
  74                                 setBackground(fErrorMsgAreaBackground);
  75                                 return;
  76                         }
  77                 }
  78                 setText(""); //$NON-NLS-1$
  79                 setImage(null);
  80                 setBackground(fNormalMsgAreaBackground);
  81         }
  82
  83         /*
  84          * @see Widget#dispose()
  85          */
  86         public void dispose() {
  87                 if (fErrorMsgAreaBackground != null) {
  88                         fErrorMsgAreaBackground.dispose();
  89                         fErrorMsgAreaBackground= null;
  90                 }
  91                 super.dispose();
  92         }
  93 }