[51] Add custom icon to OpenAPI 3.0 YAML and JSON files

dev/org.eclipse.codewind.openapi.ui/plugin.properties

@@ -19,3 +19,6 @@ OPENAPI_TOOLS=OpenAPI Tools
 CLIENT_API_STUB=Client API stub...
 SERVER_API_STUB=Server API stub...
 HTML_DOCUMENTATION=HTML documentation...
+
+DECORATOR=OpenAPI Decorator
+DECORATOR_DESCRIPTION=Codewind OpenAPI Document Decorators

dev/org.eclipse.codewind.openapi.ui/plugin.xml

@@ -472,5 +472,19 @@
 			disabledIcon="icons/dtool16/html_generate.gif"
 			icon="icons/etool16/html_generate.gif" />
 	</extension>
+
+	<extension point="org.eclipse.ui.decorators" id="org.eclipse.codewind.openapi.ui.decorators" name="OpenAPI decorators">
+        <decorator
+            id="org.eclipse.codewind.openapi.ui.decorator" 
+            label="%DECORATOR"
+            state="true"
+            class="org.eclipse.codewind.openapi.ui.CustomLabelDecorator" 
+            lightweight="false">
+            <description>%DECORATOR_DESCRIPTION</description>
+            <enablement>
+                <objectClass name="org.eclipse.core.resources.IFile"/>
+            </enablement>
+        </decorator>
+	</extension>
 </plugin>
 

dev/org.eclipse.codewind.openapi.ui/src/org/eclipse/codewind/openapi/ui/Activator.java

@@ -20,6 +20,7 @@
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.resource.ImageRegistry;
 import org.eclipse.osgi.service.debug.DebugOptionsListener;
+import org.eclipse.swt.graphics.Image;
 import org.eclipse.ui.plugin.AbstractUIPlugin;
 import org.osgi.framework.BundleContext;
 
@@ -80,6 +81,21 @@ public static ImageDescriptor getImageDescriptor(String path) {
 		return descriptor;
 	}
 
+	public static Image getImage(String path) {
+		ImageRegistry imageRegistry = plugin.getImageRegistry();
+		ImageDescriptor descriptor = imageRegistry.getDescriptor(path);		
+		if (descriptor == null) {
+			descriptor = imageDescriptorFromPlugin(PLUGIN_ID, path);
+			imageRegistry.put(path, descriptor);
+		}
+		Image image = imageRegistry.get(path + "_IMG");
+		if (image == null) {
+			image = descriptor.createImage();
+			imageRegistry.put(path + "_IMG", image);
+		}
+		return image;
+	}
+
 	public static void log(int severity, String message) {
 		plugin.getLog().log(new Status(severity, PLUGIN_ID, message));
 	}

dev/org.eclipse.codewind.openapi.ui/src/org/eclipse/codewind/openapi/ui/Constants.java

@@ -24,9 +24,11 @@ public Constants() {
 	public static String CODEWIND_EXPLORER_VIEW = "org.eclipse.codewind.ui.explorerView"; //$NON-NLS-1$
 	public static String HTML_DOCUMENTATION_FILE = "index.html"; //$NON-NLS-1$
 
-	public static String IMG_CLIENT_WIZBAN = "icons/wizban/select_client_wiz.png";
-	public static String IMG_SERVER_WIZBAN = "icons/wizban/select_server_wiz.png";
-	public static String IMG_HTML_WIZBAN = "icons/wizban/html_generator_wiz.png";
+	public static String IMG_CLIENT_WIZBAN = "icons/wizban/select_client_wiz.png"; //$NON-NLS-1$
+	public static String IMG_SERVER_WIZBAN = "icons/wizban/select_server_wiz.png"; //$NON-NLS-1$
+	public static String IMG_HTML_WIZBAN = "icons/wizban/html_generator_wiz.png"; //$NON-NLS-1$
+	public static String IMG_OPENAPI = "icons/OpenAPI.png"; //$NON-NLS-1$
+
 
 	public static String ALL_CLIENT_LANGUAGES[][]  = new String[][] {
 		{ "Go", "go"}, 

dev/org.eclipse.codewind.openapi.ui/src/org/eclipse/codewind/openapi/ui/CustomLabelDecorator.java

@@ -0,0 +1,83 @@
+/*******************************************************************************
+ * Copyright (c) 2019 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.codewind.openapi.ui;
+
+import java.io.IOException;
+
+import org.eclipse.codewind.openapi.core.IOpenApiConstants;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.runtime.content.IContentType;
+import org.eclipse.core.runtime.content.IContentTypeManager;
+import org.eclipse.jface.viewers.ILabelDecorator;
+import org.eclipse.jface.viewers.ILabelProviderListener;
+import org.eclipse.swt.graphics.Image;
+
+public class CustomLabelDecorator implements ILabelDecorator {
+
+	public CustomLabelDecorator() {
+		// Empty
+	}
+
+	@Override
+	public void addListener(ILabelProviderListener arg0) {
+		// Empty
+
+	}
+
+	@Override
+	public void dispose() {
+		// Empty
+
+	}
+
+	@Override
+	public boolean isLabelProperty(Object arg0, String arg1) {
+		return false;
+	}
+
+	@Override
+	public void removeListener(ILabelProviderListener arg0) {
+		// Empty
+	}
+
+	@Override
+	public Image decorateImage(Image arg0, Object resource) {
+		if (resource instanceof IFile) {
+			IFile iFile = (IFile) resource;
+			try {
+				IContentTypeManager contentTypeManager = Platform.getContentTypeManager();
+				IContentType contentType = contentTypeManager.findContentTypeFor(iFile.getContents(), iFile.getName());
+				if (contentType != null) {
+					if (IOpenApiConstants.CONTENTTYPE_JSON.equals(contentType.getId())
+						|| IOpenApiConstants.CONTENTTYPE_YAML.contentEquals(contentType.getId())) {
+						Image image = Activator.getImage(Constants.IMG_OPENAPI);
+						return image;
+					}
+				}
+			} catch (IOException e) {
+				// ignore
+			} catch (CoreException e) {
+				// ignore
+			}
+		}
+		return arg0;
+	}
+
+	@Override
+	public String decorateText(String arg0, Object arg1) {
+		return null;
+	}
+
+}