1 files changed, 111 insertions, 0 deletions
diff --git a/plugins/org.eclipse.emf.cdo.ecore.dependencies/src/org/eclipse/emf/cdo/ecore/dependencies/provider/URIStyler.java b/plugins/org.eclipse.emf.cdo.ecore.dependencies/src/org/eclipse/emf/cdo/ecore/dependencies/provider/URIStyler.java
new file mode 100644
index 0000000000..70a40451d1
--- /dev/null
+++ b/plugins/org.eclipse.emf.cdo.ecore.dependencies/src/org/eclipse/emf/cdo/ecore/dependencies/provider/URIStyler.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2022 Eike Stepper (Loehne, Germany) and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.emf.cdo.ecore.dependencies.provider;
+
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.emf.edit.provider.StyledString;
+import org.eclipse.emf.edit.provider.StyledString.Style;
+import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
+
+import org.eclipse.swt.graphics.Font;
+
+/**
+ * @author Eike Stepper
+ */
+public final class URIStyler
+{
+  public static final int WORKSPACE = 0;
+
+  public static final int EXTERNAL = 1;
+
+  public static final int MISSING = 2;
+
+  private static final URI COLOR_WORKSPACE = URI.createURI("color://rgb/0/0/0");
+
+  private static final URI COLOR_EXTERNAL = URI.createURI("color://rgb/128/128/150");
+
+  private static final URI COLOR_MISSING = URI.createURI("color://rgb/220/60/60");
+
+  private static final URI FONT_BOLD = URI.createURI("font:////bold");
+
+  private static final Style[][] STYLES = { styles(COLOR_WORKSPACE), styles(COLOR_EXTERNAL), styles(COLOR_MISSING) };
+
+  private static final StyledString EMPTY = new StyledString();
+
+  private URIStyler()
+  {
+  }
+
+  public static void setDefaultFont(Font font)
+  {
+    EMFLabelProvider.INSTANCE.setDefaultFont(font);
+  }
+
+  public static StyledString getEMFStyledURI(URI uri, int colorIndex)
+  {
+    if (uri == null)
+    {
+      return EMPTY;
+    }
+
+    String fragment = uri.fragment();
+    uri = uri.trimFragment();
+    String lastSegment = uri.lastSegment();
+    uri = uri.trimSegments(1).appendSegment("");
+
+    StyledString styledLabel = new StyledString();
+    styledLabel.append(uri.toString(), STYLES[colorIndex][0]);
+    styledLabel.append(lastSegment, STYLES[colorIndex][1]);
+    styledLabel.append(fragment, STYLES[colorIndex][0]);
+    return styledLabel;
+  }
+
+  public static org.eclipse.jface.viewers.StyledString getJFaceStyledURI(URI uri, int colorIndex)
+  {
+    if (EMFLabelProvider.INSTANCE.getDefaultFont() == null)
+    {
+      throw new IllegalStateException("setDefaultFont() must be called");
+    }
+
+    StyledString emfStyledURI = getEMFStyledURI(uri, colorIndex);
+    return EMFLabelProvider.INSTANCE.toJFaceStyledString(emfStyledURI);
+  }
+
+  private static Style[] styles(URI color)
+  {
+    return new Style[] { //
+        Style.newBuilder().setForegroundColor(color).toStyle(), //
+        Style.newBuilder().setForegroundColor(color).setFont(FONT_BOLD).toStyle() //
+    };
+  }
+
+  /**
+   * @author Eike Stepper
+   */
+  private static final class EMFLabelProvider extends AdapterFactoryLabelProvider
+  {
+    private static final EMFLabelProvider INSTANCE = new EMFLabelProvider();
+
+    private EMFLabelProvider()
+    {
+      super(null);
+    }
+
+    /**
+     * Make public.
+     */
+    @Override
+    public org.eclipse.jface.viewers.StyledString toJFaceStyledString(StyledString styledString)
+    {
+      return super.toJFaceStyledString(styledString);
+    }
+  }
+}