Re-integrate Argeo RCP into Argeo Commons

[lgpl/argeo-commons.git] / rcp / org.argeo.eclipse.ui.rcp / src / org / argeo / eclipse / ui / specific / OpenFile.java

diff --git a/rcp/org.argeo.eclipse.ui.rcp/src/org/argeo/eclipse/ui/specific/OpenFile.java b/rcp/org.argeo.eclipse.ui.rcp/src/org/argeo/eclipse/ui/specific/OpenFile.java
new file mode 100644 (file)
index 0000000..704079f
--- /dev/null
+++ b/rcp/org.argeo.eclipse.ui.rcp/src/org/argeo/eclipse/ui/specific/OpenFile.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.eclipse.ui.specific;
+
+import static org.argeo.eclipse.ui.utils.SingleSourcingConstants.FILE_SCHEME;
+import static org.argeo.eclipse.ui.utils.SingleSourcingConstants.SCHEME_HOST_SEPARATOR;
+
+import java.awt.Desktop;
+import java.io.File;
+import java.io.IOException;
+
+import org.argeo.eclipse.ui.utils.SingleSourcingConstants;
+import org.eclipse.core.commands.AbstractHandler;
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.ExecutionException;
+
+/**
+ * RCP specific command handler to open a file.
+ * 
+ * The parameter "URI" is used to determine the correct method to open it.
+ * 
+ * Various instances of this handler with different command ID might coexist in
+ * order to provide context specific open file services.
+ * 
+ */
+public class OpenFile extends AbstractHandler {
+       // private final static Log log = LogFactory.getLog(OpenFile.class);
+       public final static String ID = SingleSourcingConstants.OPEN_FILE_CMD_ID;
+       public final static String PARAM_FILE_NAME = SingleSourcingConstants.PARAM_FILE_NAME;
+       public final static String PARAM_FILE_URI = SingleSourcingConstants.PARAM_FILE_URI;
+
+       public Object execute(ExecutionEvent event) throws ExecutionException {
+               String fileUri = event.getParameter(PARAM_FILE_URI);
+
+               // sanity check
+               if (fileUri == null || "".equals(fileUri.trim()))
+                       return null;
+
+               Desktop desktop = null;
+               if (Desktop.isDesktopSupported()) {
+                       desktop = Desktop.getDesktop();
+               }
+
+               File file = getFileFromUri(fileUri);
+               if (file != null)
+                       try {
+                               desktop.open(file);
+                       } catch (IOException e) {
+                               throw new SingleSourcingException("Unable to open file with URI: " + fileUri, e);
+                       }
+               return null;
+       }
+
+       protected File getFileFromUri(String uri) {
+               if (uri.startsWith(FILE_SCHEME)) {
+                       String path = uri.substring((FILE_SCHEME + SCHEME_HOST_SEPARATOR).length());
+                       return new File(path);
+               }
+               return null;
+       }
+}