First try to solve RAP specific file download service issue revealed by the upgrade...

[lgpl/argeo-commons.git] / base / runtime / org.argeo.eclipse.ui.rap / src / main / java / org / argeo / eclipse / ui / specific / AbstractOpenFileHandler.java

diff --git a/base/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/AbstractOpenFileHandler.java b/base/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/AbstractOpenFileHandler.java
new file mode 100644 (file)
index 0000000..429e537
--- /dev/null
+++ b/base/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/AbstractOpenFileHandler.java
@@ -0,0 +1,82 @@
+/*
+ * 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 org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.eclipse.core.commands.AbstractHandler;
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.ExecutionException;
+import org.eclipse.rap.rwt.RWT;
+import org.eclipse.rap.rwt.client.service.UrlLauncher;
+
+/**
+ * Rap specific handler to open a file stored in the server file system, among
+ * other tmp files created for exports.
+ * 
+ */
+public abstract class AbstractOpenFileHandler extends AbstractHandler {
+       private final static Log log = LogFactory
+                       .getLog(AbstractOpenFileHandler.class);
+
+       // Must be declared by implementing classes
+       // public final static String ID = "org.argeo.eclipse.ui.specific.openFile";
+
+       public final static String PARAM_FILE_NAME = FileDownloadServiceHandler.PARAM_FILE_NAME;
+       public final static String PARAM_FILE_PATH = FileDownloadServiceHandler.PARAM_FILE_PATH;
+
+       public Object execute(ExecutionEvent event) throws ExecutionException {
+
+               // Try to register each time we execute the command.
+               // try {
+               // ServiceHandler handler = new FileDownloadServiceHandler();
+               // RWT.getServiceManager().registerServiceHandler(
+               // FileDownloadServiceHandler.DOWNLOAD_SERVICE_NAME, handler);
+               // } catch (IllegalArgumentException iae) {
+               // log.warn("Handler is already registered, clean this registering process");
+               // }
+
+               // The real usefull handler
+               String fileName = event.getParameter(PARAM_FILE_NAME);
+               String filePath = event.getParameter(PARAM_FILE_PATH);
+
+               StringBuilder url = new StringBuilder();
+               url.append("&").append(PARAM_FILE_NAME).append("=");
+               url.append(fileName);
+               url.append("&").append(PARAM_FILE_PATH).append("=");
+               url.append(filePath);
+
+               String downloadUrl = RWT.getServiceManager().getServiceHandlerUrl(
+                               getDownloadServiceHandlerId())
+                               + url.toString();
+               if (log.isTraceEnabled())
+                       log.debug("URL : " + downloadUrl);
+
+               UrlLauncher launcher = RWT.getClient().getService(UrlLauncher.class);
+               launcher.openURL(downloadUrl);
+
+               // These lines are useless in the current use case but might be
+               // necessary with new browsers. Stored here for memo
+               // response.setContentType("application/force-download");
+               // response.setHeader("Content-Disposition", contentDisposition);
+               // response.setHeader("Content-Transfer-Encoding", "binary");
+               // response.setHeader("Pragma", "no-cache");
+               // response.setHeader("Cache-Control", "no-cache, must-revalidate");
+               return null;
+       }
+
+       protected abstract String getDownloadServiceHandlerId();
+}
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