Bug 549665 - [generic editor] Package Explorer should supportY20190805-0900

content-type specific icons for generic editor (edit)

Change-Id: I51760d6d50729d4d159c18059f1dc67caf937d5b
Signed-off-by: Lakshminarayana Nekkanti <narayana.nekkanti@gmail.com>

3 files changed, 147 insertions, 0 deletions

diff --git a/org.eclipse.ui.genericeditor/plugin.xml b/org.eclipse.ui.genericeditor/plugin.xml
index bb3ea5b8a90..fa452caaad1 100644
--- a/org.eclipse.ui.genericeditor/plugin.xml
+++ b/org.eclipse.ui.genericeditor/plugin.xml
@@ -224,4 +224,10 @@
             id="org.eclipse.ui.genericeditor.compareViewer">
       </viewer>
    </extension>
+  <extension
+         point="org.eclipse.ui.ide.editorAssociationOverride">
+      <editorAssociationOverride
+            class="org.eclipse.ui.internal.genericeditor.GenericEditorAssociationOverride"
+            id="org.eclipse.ui.internal.genericeditor.GenericEditorAssociationOverride"/>
+   </extension>
 </plugin>
diff --git a/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/GenericEditorAssociationOverride.java b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/GenericEditorAssociationOverride.java
new file mode 100644
index 00000000000..ab275f14da4
--- /dev/null
+++ b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/GenericEditorAssociationOverride.java
@@ -0,0 +1,64 @@
+/********************************************************************************
+ * Copyright (c) 2019 Lakshminarayana Nekkanti(narayana.nekkanti@gmail.com)
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0 3
+ *
+ * Contributor
+ * Lakshminarayana Nekkanti - initial API and implementation
+ ********************************************************************************/
+package org.eclipse.ui.internal.genericeditor;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.eclipse.core.runtime.content.IContentType;
+import org.eclipse.ui.IEditorDescriptor;
+import org.eclipse.ui.IEditorInput;
+import org.eclipse.ui.ide.IEditorAssociationOverride;
+
+public class GenericEditorAssociationOverride implements IEditorAssociationOverride {
+
+	private Map<String, IEditorDescriptor> descriptorMap = new HashMap<String, IEditorDescriptor>();
+
+	@Override
+	public IEditorDescriptor[] overrideEditors(IEditorInput editorInput, IContentType contentType,
+			IEditorDescriptor[] editorDescriptors) {
+		return overrideEditors(editorInput.getName(), contentType, editorDescriptors);
+	}
+
+	@Override
+	public IEditorDescriptor[] overrideEditors(String fileName, IContentType contentType,
+			IEditorDescriptor[] editorDescriptors) {
+		return Arrays.stream(editorDescriptors).map(descripter -> {
+			return getEditorDescriptorForFile(descripter, fileName);
+		}).toArray(size -> new IEditorDescriptor[size]);
+	}
+
+	@Override
+	public IEditorDescriptor overrideDefaultEditor(IEditorInput editorInput, IContentType contentType,
+			IEditorDescriptor editorDescriptor) {
+		return overrideDefaultEditor(editorInput.getName(), contentType, editorDescriptor);
+	}
+
+	@Override
+	public IEditorDescriptor overrideDefaultEditor(String fileName, IContentType contentType,
+			IEditorDescriptor editorDescriptor) {
+		return getEditorDescriptorForFile(editorDescriptor, fileName);
+	}
+
+	private IEditorDescriptor getEditorDescriptorForFile(IEditorDescriptor defaultDescripter, String fileName) {
+		if (defaultDescripter != null
+				&& "org.eclipse.ui.genericeditor.GenericEditor".equals(defaultDescripter.getId())) { //$NON-NLS-1$
+			if (!descriptorMap.containsKey(fileName)) {
+				descriptorMap.put(fileName, new GenericEditorDescriptor(fileName, defaultDescripter));
+			}
+			return descriptorMap.get(fileName);
+		}
+		return defaultDescripter;
+	}
+}
diff --git a/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/GenericEditorDescriptor.java b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/GenericEditorDescriptor.java
new file mode 100644
index 00000000000..39942aa495e
--- /dev/null
+++ b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/GenericEditorDescriptor.java
@@ -0,0 +1,77 @@
+/********************************************************************************
+ * Copyright (c) 2019 Lakshminarayana Nekkanti(narayana.nekkanti@gmail.com)
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0 3
+ *
+ * Contributor
+ * Lakshminarayana Nekkanti - initial API and implementation
+ ********************************************************************************/
+package org.eclipse.ui.internal.genericeditor;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.ui.IEditorDescriptor;
+import org.eclipse.ui.IEditorMatchingStrategy;
+
+public class GenericEditorDescriptor implements IEditorDescriptor {
+	private IEditorDescriptor editorDescriptor;
+	private String fileName;
+
+	public GenericEditorDescriptor(String fileName, IEditorDescriptor editorDescriptor) {
+		Assert.isNotNull(editorDescriptor);
+		this.fileName = fileName;
+		this.editorDescriptor = editorDescriptor;
+	}
+
+	@Override
+	public String getId() {
+		return this.editorDescriptor.getId();
+	}
+
+	@Override
+	public ImageDescriptor getImageDescriptor() {
+		try {
+			ImageDescriptor image = GenericEditorPlugin.getDefault().getContentTypeImagesRegistry()
+					.getImageDescriptor(Platform.getContentTypeManager().findContentTypesFor(fileName));
+			if (image != null) {
+				return image;
+			}
+		} catch (Exception e) {
+			GenericEditorPlugin.getDefault().getLog()
+					.log(new Status(IStatus.ERROR, GenericEditorPlugin.BUNDLE_ID, e.getMessage(), e));
+		}
+		return this.editorDescriptor.getImageDescriptor();
+	}
+
+	@Override
+	public String getLabel() {
+		return this.editorDescriptor.getLabel();
+	}
+
+	@Override
+	public boolean isInternal() {
+		return this.editorDescriptor.isInternal();
+	}
+
+	@Override
+	public boolean isOpenInPlace() {
+		return this.editorDescriptor.isOpenInPlace();
+	}
+
+	@Override
+	public boolean isOpenExternal() {
+		return this.editorDescriptor.isOpenExternal();
+	}
+
+	@Override
+	public IEditorMatchingStrategy getEditorMatchingStrategy() {
+		return this.editorDescriptor.getEditorMatchingStrategy();
+	}
+}