bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/dialogs/ShowError.java

   1 package org.simantics.utils.ui.dialogs;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5
   6 import org.eclipse.core.runtime.IStatus;
   7 import org.eclipse.jface.dialogs.IDialogConstants;
   8 import org.eclipse.jface.dialogs.IconAndMessageDialog;
   9 import org.eclipse.jface.layout.GridDataFactory;
  10 import org.eclipse.swt.SWT;
  11 import org.eclipse.swt.graphics.Image;
  12 import org.eclipse.swt.graphics.Point;
  13 import org.eclipse.swt.graphics.Rectangle;
  14 import org.eclipse.swt.layout.GridData;
  15 import org.eclipse.swt.layout.GridLayout;
  16 import org.eclipse.swt.widgets.Composite;
  17 import org.eclipse.swt.widgets.Control;
  18 import org.eclipse.swt.widgets.Display;
  19 import org.eclipse.swt.widgets.Label;
  20 import org.eclipse.swt.widgets.Shell;
  21 import org.eclipse.swt.widgets.Text;
  22
  23 /**
  24  * This class shows an error, Throwable or IStatus. Can be instantiated from any thread.
  25  *
  26  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  27  *
  28  */
  29 public class ShowError implements Runnable {
  30
  31     private String title;
  32
  33     private String message;
  34
  35     private Throwable error;
  36
  37     private Display display;
  38
  39     private IStatus status;
  40
  41     public ShowError(String title, String message, Throwable error) {
  42         this.title = title;
  43         this.message = message;
  44         this.error = error;
  45         this.display = getDisplay();
  46         display.asyncExec(this);
  47     }
  48
  49     public ShowError(Display display, String title, String message, Throwable error) {
  50         this.title = title;
  51         this.message = message;
  52         this.error = error;
  53         this.display = display;
  54         display.asyncExec(this);
  55     }
  56
  57     public ShowError(String title, String message, Throwable error, boolean sync) {
  58         this.title = title;
  59         this.message = message;
  60         this.error = error;
  61         this.display = getDisplay();
  62         if (sync)
  63             display.syncExec(this);
  64         else
  65             display.asyncExec(this);
  66     }
  67
  68     public ShowError(Display display, String title, String message, Throwable error, boolean sync) {
  69         this.title = title;
  70         this.message = message;
  71         this.error = error;
  72         this.display = display;
  73         if (sync)
  74             display.syncExec(this);
  75         else
  76             display.asyncExec(this);
  77     }
  78
  79     public ShowError(String title, String message,IStatus status) {
  80         this.title = title;
  81         this.message = message;
  82         this.status = status;
  83         this.display = getDisplay();
  84         display.asyncExec(this);
  85     }
  86
  87     public ShowError(Display display,String title, String message, IStatus status) {
  88         this.title = title;
  89         this.message = message;
  90         this.status = status;
  91         this.display = display;
  92         display.asyncExec(this);
  93     }
  94
  95     public ShowError(String title, String message,IStatus status, boolean sync) {
  96         this.title = title;
  97         this.message = message;
  98         this.status = status;
  99         this.display = getDisplay();
 100         if (sync)
 101             display.syncExec(this);
 102         else
 103             display.asyncExec(this);
 104     }
 105
 106     public ShowError(Display display,String title, String message, IStatus status, boolean sync) {
 107         this.title = title;
 108         this.message = message;
 109         this.status = status;
 110         this.display = display;
 111         if (sync)
 112             display.syncExec(this);
 113         else
 114             display.asyncExec(this);
 115     }
 116
 117     public Display getDisplay() {
 118         if (display!=null) return display;
 119         Display d = Display.getCurrent();
 120         if (d!=null) return d;
 121         return Display.getDefault();
 122     }
 123
 124     public void run() {
 125         Shell shell = display.getActiveShell();
 126         if (error == null && status != null) {
 127             org.eclipse.jface.dialogs.ErrorDialog.openError(shell, title, message, status);
 128         } else {
 129             ErrorDialog dialog = new ErrorDialog(shell, title, message, error);
 130             dialog.open();
 131         }
 132     }
 133
 134     public static void showError(String title, String message, Throwable error) {
 135         new ShowError(title, message, error);
 136     }
 137
 138     public static void showError(String title, String message,IStatus status) {
 139         new ShowError(title, message, status);
 140     }
 141
 142
 143     private class ErrorDialog extends IconAndMessageDialog {
 144
 145         private String title;
 146         //private String message;
 147         private Text messageText;
 148         private Text errorText;
 149         private String errorString;
 150
 151         protected ErrorDialog(Shell parentShell, String title, String message, Throwable error) {
 152             super(parentShell);
 153             this.title = title;
 154             this.message = message;
 155             if (error != null) {
 156                 StringWriter sw = new StringWriter();
 157                 error.printStackTrace(new PrintWriter(sw));
 158                 this.errorString = sw.toString();
 159             }
 160             setShellStyle(getShellStyle() | SWT.RESIZE);
 161         }
 162
 163         @Override
 164         protected Image getImage() {
 165             return getErrorImage();
 166         }
 167
 168         @Override
 169         protected void configureShell(Shell newShell) {
 170             super.configureShell(newShell);
 171             newShell.setText(title);
 172             newShell.setImage(newShell.getDisplay().getSystemImage(SWT.ICON_ERROR));
 173         }
 174
 175 //        @Override
 176 //        protected Control createDialogArea(Composite parent) {
 177 //            Composite composite = new Composite(parent, SWT.NONE);
 178 //            GridLayout layout = new GridLayout();
 179 //            layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
 180 //            layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
 181 //            layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
 182 //            layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
 183 //            composite.setLayout(layout);
 184 //            composite.setLayoutData(new GridData(GridData.FILL_BOTH));
 185 //            applyDialogFont(composite);
 186 //
 187 //
 188 //            Text label = new Text(composite, SWT.MULTI);
 189 //            label.setEditable(false);
 190 //            if (message != null)
 191 //                label.setText(message);
 192 //            else
 193 //                label.setText("no message");
 194 //
 195 //            return composite;
 196 //        }
 197
 198         protected Control createMessageArea(Composite composite) {
 199             // create image
 200             Image image = getImage();
 201             if (image != null) {
 202                 imageLabel = new Label(composite, SWT.NULL);
 203                 image.setBackground(imageLabel.getBackground());
 204                 imageLabel.setImage(image);
 205                 GridDataFactory.fillDefaults().align(SWT.CENTER, SWT.BEGINNING)
 206                         .applyTo(imageLabel);
 207             }
 208             // create message
 209             if (message != null) {
 210                 messageText = new Text(composite, SWT.MULTI | SWT.BORDER | SWT.FLAT | SWT.WRAP | SWT.H_SCROLL | SWT.V_SCROLL);
 211                 messageText.setEditable(false);
 212                 messageText.setText(message);
 213                 GridDataFactory
 214                         .fillDefaults()
 215                         .grab(true, true)
 216                         .hint(
 217                                 convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH),
 218                                 SWT.DEFAULT).applyTo(messageText);
 219             }
 220             return composite;
 221         }
 222
 223         protected Control createDialogArea(Composite parent) {
 224             Composite composite = new Composite(parent, SWT.NONE);
 225
 226             createMessageArea(composite);
 227
 228             GridLayout layout = new GridLayout();
 229             layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
 230             layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
 231             layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
 232             layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
 233             layout.numColumns = 2;
 234             composite.setLayout(layout);
 235             GridData childData = new GridData(GridData.FILL_BOTH);
 236             childData.horizontalSpan = 2;
 237             childData.grabExcessVerticalSpace = true;
 238             composite.setLayoutData(childData);
 239             applyDialogFont(composite);
 240
 241             return composite;
 242         }
 243
 244         protected void createButtonsForButtonBar(Composite parent) {
 245             // create OK and Cancel buttons by default
 246             createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL,
 247                     true);
 248             if (errorString != null)
 249                 createButton(parent, IDialogConstants.DETAILS_ID,
 250                         IDialogConstants.SHOW_DETAILS_LABEL, false);
 251         }
 252
 253         @Override
 254         protected void buttonPressed(int buttonId) {
 255             super.buttonPressed(buttonId);
 256             if (buttonId == IDialogConstants.DETAILS_ID) {
 257                 if (errorText == null) {
 258                     errorText = new Text((Composite)getDialogArea(), SWT.BORDER|SWT.H_SCROLL|SWT.V_SCROLL);
 259                     errorText.setText(errorString);
 260                     GridDataFactory.fillDefaults().span(2, 1).applyTo(errorText);
 261                 } else {
 262                     errorText.dispose();
 263                     errorText = null;
 264                 }
 265                 resize();
 266             }
 267         }
 268
 269         protected void resize() {
 270             Point size = getInitialSize();
 271             Point location = getInitialLocation(size);
 272             getShell().setBounds(getConstrainedShellBounds(new Rectangle(location.x,
 273                     location.y, size.x, size.y)));
 274         }
 275
 276     }
 277
 278 }