[tx-robot] updated from transifex

[pub/Android/ownCloud.git] / src / com / owncloud / android / operations / DownloadFileOperation.java

diff --git a/src/com/owncloud/android/operations/DownloadFileOperation.java b/src/com/owncloud/android/operations/DownloadFileOperation.java
index c672d57..dff8aef 100644 (file)
--- a/src/com/owncloud/android/operations/DownloadFileOperation.java
+++ b/src/com/owncloud/android/operations/DownloadFileOperation.java
@@ -1,5 +1,9 @@
-/* ownCloud Android client application
- *   Copyright (C) 2012-2013 ownCloud Inc.
+/**
+ *   ownCloud Android client application
+ *
+ *   @author David A. Velasco
+ *   @author masensio
+ *   Copyright (C) 2015 ownCloud Inc.
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License version 2,
@@ -21,24 +25,23 @@ import java.io.File;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Set;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.lib.common.network.OnDatatransferProgressListener;
 import com.owncloud.android.lib.common.OwnCloudClient;
+import com.owncloud.android.lib.common.operations.OperationCancelledException;
 import com.owncloud.android.lib.common.operations.RemoteOperation;
 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
+import com.owncloud.android.lib.common.utils.Log_OC;
 import com.owncloud.android.lib.resources.files.DownloadRemoteFileOperation;
 import com.owncloud.android.utils.FileStorageUtils;
-import com.owncloud.android.utils.Log_OC;
 
 import android.accounts.Account;
 import android.webkit.MimeTypeMap;
 
 /**
  * Remote mDownloadOperation performing the download of a file to an ownCloud server
- * 
- * @author David A. Velasco
- * @author masensio
  */
 public class DownloadFileOperation extends RemoteOperation {
     
@@ -48,15 +51,19 @@ public class DownloadFileOperation extends RemoteOperation {
     private OCFile mFile;
     private Set<OnDatatransferProgressListener> mDataTransferListeners = new HashSet<OnDatatransferProgressListener>();
     private long mModificationTimestamp = 0;
+    private String mEtag = "";
+    private final AtomicBoolean mCancellationRequested = new AtomicBoolean(false);
     
     private DownloadRemoteFileOperation mDownloadOperation;
 
     
     public DownloadFileOperation(Account account, OCFile file) {
         if (account == null)
-            throw new IllegalArgumentException("Illegal null account in DownloadFileOperation creation");
+            throw new IllegalArgumentException("Illegal null account in DownloadFileOperation " +
+                    "creation");
         if (file == null)
-            throw new IllegalArgumentException("Illegal null file in DownloadFileOperation creation");
+            throw new IllegalArgumentException("Illegal null file in DownloadFileOperation " +
+                    "creation");
         
         mAccount = account;
         mFile = file;
@@ -73,7 +80,7 @@ public class DownloadFileOperation extends RemoteOperation {
     }
 
     public String getSavePath() {
-        String path = mFile.getStoragePath();   // re-downloads should be done over the original file 
+        String path = mFile.getStoragePath();  // re-downloads should be done over the original file
         if (path != null && path.length() > 0) {
             return path;
         }
@@ -98,9 +105,11 @@ public class DownloadFileOperation extends RemoteOperation {
             try {
                 mimeType = MimeTypeMap.getSingleton()
                     .getMimeTypeFromExtension(
-                            mFile.getRemotePath().substring(mFile.getRemotePath().lastIndexOf('.') + 1));
+                            mFile.getRemotePath().substring(
+                                    mFile.getRemotePath().lastIndexOf('.') + 1));
             } catch (IndexOutOfBoundsException e) {
-                Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " + mFile.getRemotePath());
+                Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " +
+                        mFile.getRemotePath());
             }
         }
         if (mimeType == null) {
@@ -114,14 +123,19 @@ public class DownloadFileOperation extends RemoteOperation {
     }
     
     public long getModificationTimestamp() {
-        return (mModificationTimestamp > 0) ? mModificationTimestamp : mFile.getModificationTimestamp();
+        return (mModificationTimestamp > 0) ? mModificationTimestamp :
+                mFile.getModificationTimestamp();
+    }
+
+    public String getEtag() {
+        return mEtag;
     }
 
     @Override
     protected RemoteOperationResult run(OwnCloudClient client) {
-        RemoteOperationResult result = null;
-        File newFile = null;
-        boolean moved = true;
+        RemoteOperationResult result;
+        File newFile;
+        boolean moved;
         
         /// download will be performed to a temporal file, then moved to the final location
         File tmpFile = new File(getTmpPath());
@@ -129,6 +143,12 @@ public class DownloadFileOperation extends RemoteOperation {
         String tmpFolder =  getTmpFolder();
         
         /// perform the download
+        synchronized(mCancellationRequested) {
+            if (mCancellationRequested.get()) {
+                return new RemoteOperationResult(new OperationCancelledException());
+            }
+        }
+        
         mDownloadOperation = new DownloadRemoteFileOperation(mFile.getRemotePath(), tmpFolder);
         Iterator<OnDatatransferProgressListener> listener = mDataTransferListeners.iterator();
         while (listener.hasNext()) {
@@ -138,21 +158,25 @@ public class DownloadFileOperation extends RemoteOperation {
         
         if (result.isSuccess()) {
             mModificationTimestamp = mDownloadOperation.getModificationTimestamp();
+            mEtag = mDownloadOperation.getEtag();
             newFile = new File(getSavePath());
             newFile.getParentFile().mkdirs();
             moved = tmpFile.renameTo(newFile);
-        
             if (!moved)
-                result = new RemoteOperationResult(RemoteOperationResult.ResultCode.LOCAL_STORAGE_NOT_MOVED);
+                result = new RemoteOperationResult(
+                        RemoteOperationResult.ResultCode.LOCAL_STORAGE_NOT_MOVED);
         }
-        Log_OC.i(TAG, "Download of " + mFile.getRemotePath() + " to " + getSavePath() + ": " + result.getLogMessage());
-        
+        Log_OC.i(TAG, "Download of " + mFile.getRemotePath() + " to " + getSavePath() + ": " +
+                result.getLogMessage());
         
         return result;
     }
 
     public void cancel() {
-        mDownloadOperation.cancel();
+        mCancellationRequested.set(true);   // atomic set; there is no need of synchronizing it
+        if (mDownloadOperation != null) {
+            mDownloadOperation.cancel();
+        }
     }
 
 
@@ -167,5 +191,4 @@ public class DownloadFileOperation extends RemoteOperation {
             mDataTransferListeners.remove(listener);
         }
     }
-    
 }