Merge pull request #740 from owncloud/revert-669-master
[pub/Android/ownCloud.git] / src / com / owncloud / android / ui / preview / PreviewImageFragment.java
index 9d0edde..4dd5c43 100644 (file)
@@ -1,5 +1,5 @@
 /* ownCloud Android client application
- *   Copyright (C) 2012-2013 ownCloud Inc. 
+ *   Copyright (C) 2012-2014 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,
  */
 package com.owncloud.android.ui.preview;
 
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
 import java.lang.ref.WeakReference;
-import java.util.ArrayList;
-import java.util.List;
-
 
 import android.accounts.Account;
 import android.annotation.SuppressLint;
@@ -34,7 +37,7 @@ import android.support.v4.app.FragmentStatePagerAdapter;
 import android.view.Display;
 import android.view.LayoutInflater;
 import android.view.View;
-import android.view.View.OnTouchListener;
+import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.ProgressBar;
@@ -44,12 +47,14 @@ import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
 import com.owncloud.android.R;
-import com.owncloud.android.datamodel.FileDataStorageManager;
 import com.owncloud.android.datamodel.OCFile;
-import com.owncloud.android.ui.activity.FileActivity;
+import com.owncloud.android.files.FileMenuFilter;
+import com.owncloud.android.lib.common.utils.Log_OC;
 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
+import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
 import com.owncloud.android.ui.fragment.FileFragment;
-import com.owncloud.android.utils.Log_OC;
+import com.owncloud.android.utils.TouchImageViewCustom;
+
 
 
 /**
@@ -61,14 +66,14 @@ import com.owncloud.android.utils.Log_OC;
  * 
  * @author David A. Velasco
  */
-public class PreviewImageFragment extends FileFragment implements 
-ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
+public class PreviewImageFragment extends FileFragment {
+
     public static final String EXTRA_FILE = "FILE";
     public static final String EXTRA_ACCOUNT = "ACCOUNT";
 
     private View mView;
     private Account mAccount;
-    private ImageView mImageView;
+    private TouchImageViewCustom mImageView;
     private TextView mMessageView;
     private ProgressBar mProgressWheel;
 
@@ -78,8 +83,6 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
 
     private boolean mIgnoreFirstSavedState;
 
-    private FileFragment.ContainerActivity mContainerActivity;
-
     
     /**
      * Creates a fragment to preview an image.
@@ -129,53 +132,33 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
             Bundle savedInstanceState) {
         super.onCreateView(inflater, container, savedInstanceState);
         mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
-        mImageView = (ImageView)mView.findViewById(R.id.image);
+        mImageView = (TouchImageViewCustom) mView.findViewById(R.id.image);
         mImageView.setVisibility(View.GONE);
-        mView.setOnTouchListener((OnTouchListener)getActivity());
+        mImageView.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                ((PreviewImageActivity) getActivity()).toggleFullScreen();
+            }
+
+        });
         mMessageView = (TextView)mView.findViewById(R.id.message);
         mMessageView.setVisibility(View.GONE);
         mProgressWheel = (ProgressBar)mView.findViewById(R.id.progressWheel);
         mProgressWheel.setVisibility(View.VISIBLE);
         return mView;
     }
-    
 
     /**
      * {@inheritDoc}
      */
     @Override
-    public void onAttach(Activity activity) {
-        super.onAttach(activity);
-        if (!(activity instanceof OnTouchListener)) {
-            throw new ClassCastException(activity.toString() + 
-                    " must implement " + OnTouchListener.class.getSimpleName());
-        }
-    }
-    
-    
-    /**
-     * {@inheritDoc}
-     */
-    @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
         if (savedInstanceState != null) {
             if (!mIgnoreFirstSavedState) {
                 OCFile file = (OCFile)savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_FILE);
+                setFile(file);
                 mAccount = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_ACCOUNT);
-                
-                // Update the file
-                if (mAccount!= null) {
-                    OCFile updatedFile = ((FileActivity) getSherlockActivity()).
-                            getStorageManager().getFileByPath(file.getRemotePath());
-                    if (updatedFile != null) {
-                        setFile(updatedFile);
-                    } else {
-                        setFile(file);
-                    }
-                } else {
-                    setFile(file);
-                }
             } else {
                 mIgnoreFirstSavedState = false;
             }
@@ -219,35 +202,7 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         super.onCreateOptionsMenu(menu, inflater);
-
         inflater.inflate(R.menu.file_actions_menu, menu);
-        List<Integer> toHide = new ArrayList<Integer>();    
-        
-        MenuItem item = null;
-        toHide.add(R.id.action_cancel_download);
-        toHide.add(R.id.action_cancel_upload);
-        toHide.add(R.id.action_download_file);
-        toHide.add(R.id.action_rename_file);    // by now
-        
-        // Options shareLink
-        if (!getFile().isShareByLink()) {
-            toHide.add(R.id.action_unshare_file);
-        }
-
-        // Send file
-        boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
-        if (!sendEnabled) {
-            toHide.add(R.id.action_send_file);
-        }
-        
-        for (int i : toHide) {
-            item = menu.findItem(i);
-            if (item != null) {
-                item.setVisible(false);
-                item.setEnabled(false);
-            }
-        }
-        
     }
 
     /**
@@ -257,16 +212,42 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
     public void onPrepareOptionsMenu(Menu menu) {
         super.onPrepareOptionsMenu(menu);
         
-        MenuItem item = menu.findItem(R.id.action_unshare_file);
-        // Options shareLink
-        if (!getFile().isShareByLink()) {
+        if (mContainerActivity.getStorageManager() != null) {
+            // Update the file
+            setFile(mContainerActivity.getStorageManager().getFileById(getFile().getFileId()));
+            
+            FileMenuFilter mf = new FileMenuFilter(
+                getFile(),
+                mContainerActivity.getStorageManager().getAccount(),
+                mContainerActivity,
+                getSherlockActivity()
+            );
+            mf.filter(menu);
+        }
+        
+        // additional restriction for this fragment 
+        // TODO allow renaming in PreviewImageFragment
+        MenuItem item = menu.findItem(R.id.action_rename_file);
+        if (item != null) {
             item.setVisible(false);
             item.setEnabled(false);
-        } else {
-            item.setVisible(true);
-            item.setEnabled(true);
         }
-            
+        
+        // additional restriction for this fragment 
+        // TODO allow refresh file in PreviewImageFragment
+        item = menu.findItem(R.id.action_sync_file);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+
+        // additional restriction for this fragment
+        item = menu.findItem(R.id.action_move);
+        if (item != null) {
+            item.setVisible(false);
+            item.setEnabled(false);
+        }
+        
     }
 
     
@@ -290,7 +271,8 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
                 return true;
             }
             case R.id.action_remove_file: {
-                removeFile();
+                RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(getFile());
+                dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
                 return true;
             }
             case R.id.action_see_details: {
@@ -301,6 +283,10 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
                 mContainerActivity.getFileOperationsHelper().sendDownloadedFile(getFile());
                 return true;
             }
+            case R.id.action_sync_file: {
+                mContainerActivity.getFileOperationsHelper().syncFile(getFile());
+                return true;
+            }
             
             default:
                 return false;
@@ -324,13 +310,13 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
         super.onPause();
     }
 
-
     @Override
     public void onDestroy() {
-        super.onDestroy();
         if (mBitmap != null) {
             mBitmap.recycle();
+            System.gc();
         }
+        super.onDestroy();
     }
 
     
@@ -343,55 +329,6 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
     }
     
     
-    /**
-     * Starts a the removal of the previewed file.
-     * 
-     * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
-     * depending upon the user selection in the dialog. 
-     */
-    private void removeFile() {
-        ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
-                R.string.confirmation_remove_alert,
-                new String[]{getFile().getFileName()},
-                R.string.confirmation_remove_remote_and_local,
-                R.string.confirmation_remove_local,
-                R.string.common_cancel);
-        confDialog.setOnConfirmationListener(this);
-        confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
-    }
-
-    
-    /**
-     * Performs the removal of the previewed file, both locally and in the server.
-     */
-    @Override
-    public void onConfirmation(String callerTag) {
-        FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
-        if (storageManager.getFileById(getFile().getFileId()) != null) {   // check that the file is still there;
-            mContainerActivity.getFileOperationsHelper().removeFile(getFile(), true);
-        }
-    }
-    
-    
-    /**
-     * Removes the file from local storage
-     */
-    @Override
-    public void onNeutral(String callerTag) {
-        OCFile file = getFile();
-        mContainerActivity.getStorageManager().removeFile(file, false, true);    // TODO perform in background task / new thread
-        finish();
-    }
-    
-    /**
-     * User cancelled the removal action.
-     */
-    @Override
-    public void onCancel(String callerTag) {
-        // nothing to do here
-    }
-    
-
     private class BitmapLoader extends AsyncTask<String, Void, Bitmap> {
 
         /**
@@ -399,7 +336,7 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
          * 
          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
          */
-        private final WeakReference<ImageView> mImageViewRef;
+        private final WeakReference<ImageViewCustom> mImageViewRef;
 
         /**
          * Weak reference to the target {@link TextView} where error messages will be written.
@@ -428,65 +365,27 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
          * 
          * @param imageView     Target {@link ImageView} where the bitmap will be loaded into.
          */
-        public BitmapLoader(ImageView imageView, TextView messageView, ProgressBar progressWheel) {
-            mImageViewRef = new WeakReference<ImageView>(imageView);
+        public BitmapLoader(ImageViewCustom imageView, TextView messageView, ProgressBar progressWheel) {
+            mImageViewRef = new WeakReference<ImageViewCustom>(imageView);
             mMessageViewRef = new WeakReference<TextView>(messageView);
             mProgressWheelRef = new WeakReference<ProgressBar>(progressWheel);
         }
         
         
-        @SuppressWarnings("deprecation")
-        @SuppressLint({ "NewApi", "NewApi", "NewApi" }) // to avoid Lint errors since Android SDK r20
-               @Override
+        @Override
         protected Bitmap doInBackground(String... params) {
             Bitmap result = null;
             if (params.length != 1) return result;
             String storagePath = params[0];
             try {
-                // set desired options that will affect the size of the bitmap
-                BitmapFactory.Options options = new Options();
-                options.inScaled = true;
-                options.inPurgeable = true;
-                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
-                    options.inPreferQualityOverSpeed = false;
-                }
-                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
-                    options.inMutable = false;
-                }
-                // make a false load of the bitmap - just to be able to read outWidth, outHeight and outMimeType
-                options.inJustDecodeBounds = true;
-                BitmapFactory.decodeFile(storagePath, options);   
-                
-                int width = options.outWidth;
-                int height = options.outHeight;
-                int scale = 1;
-                
-                Display display = getActivity().getWindowManager().getDefaultDisplay();
-                Point size = new Point();
-                int screenWidth;
-                int screenHeight;
-                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
-                    display.getSize(size);
-                    screenWidth = size.x;
-                    screenHeight = size.y;
-                } else {
-                    screenWidth = display.getWidth();
-                    screenHeight = display.getHeight();
-                }
 
-                if (width > screenWidth) {
-                    // second try to scale down the image , this time depending upon the screen size 
-                    scale = (int) Math.floor((float)width / screenWidth);
-                }
-                if (height > screenHeight) {
-                    scale = Math.max(scale, (int) Math.floor((float)height / screenHeight));
-                }
-                options.inSampleSize = scale;
+                File picture = new File(storagePath);
 
-                // really load the bitmap
-                options.inJustDecodeBounds = false; // the next decodeFile call will be real
-                result = BitmapFactory.decodeFile(storagePath, options);
-                //Log_OC.d(TAG, "Image loaded - width: " + options.outWidth + ", loaded height: " + options.outHeight);
+                if (picture != null) {
+                    //Decode file into a bitmap in real size for being able to make zoom on the image
+                    result = BitmapFactory.decodeStream(new FlushedInputStream
+                            (new BufferedInputStream(new FileInputStream(picture))));
+                }
 
                 if (result == null) {
                     mErrorMessageId = R.string.preview_image_error_unknown_format;
@@ -494,8 +393,15 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
                 }
                 
             } catch (OutOfMemoryError e) {
-                mErrorMessageId = R.string.preview_image_error_unknown_format;
                 Log_OC.e(TAG, "Out of memory occured for file " + storagePath, e);
+
+                // If out of memory error when loading image, try to load it scaled
+                result = loadScaledImage(storagePath);
+
+                if (result == null) {
+                    mErrorMessageId = R.string.preview_image_error_unknown_format;
+                    Log_OC.e(TAG, "File could not be loaded as a bitmap: " + storagePath);
+                }
                     
             } catch (NoSuchFieldError e) {
                 mErrorMessageId = R.string.common_error_unknown;
@@ -518,11 +424,13 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
                 showErrorMessage();
             }
         }
-        
+
+        @SuppressLint("InlinedApi")
         private void showLoadedImage(Bitmap result) {
             if (mImageViewRef != null) {
-                final ImageView imageView = mImageViewRef.get();
+                final ImageViewCustom imageView = mImageViewRef.get();
                 if (imageView != null) {
+                    imageView.setBitmap(result);
                     imageView.setImageBitmap(result);
                     imageView.setVisibility(View.VISIBLE);
                     mBitmap  = result;
@@ -583,5 +491,87 @@ ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
         container.finish();
     }
     
-    
+    public TouchImageViewCustom getImageView() {
+        return mImageView;
+    }
+
+    static class FlushedInputStream extends FilterInputStream {
+        public FlushedInputStream(InputStream inputStream) {
+        super(inputStream);
+        }
+
+        @Override
+        public long skip(long n) throws IOException {
+            long totalBytesSkipped = 0L;
+            while (totalBytesSkipped < n) {
+                long bytesSkipped = in.skip(n - totalBytesSkipped);
+                if (bytesSkipped == 0L) {
+                      int byteValue = read();
+                      if (byteValue < 0) {
+                          break;  // we reached EOF
+                      } else {
+                          bytesSkipped = 1; // we read one byte
+                      }
+               }
+               totalBytesSkipped += bytesSkipped;
+            }
+            return totalBytesSkipped;
+        }
+    }
+
+    /**
+     * Load image scaled
+     * @param storagePath: path of the image
+     * @return Bitmap
+     */
+    @SuppressWarnings("deprecation")
+    private Bitmap loadScaledImage(String storagePath) {
+
+        Log_OC.d(TAG, "Loading image scaled");
+
+        // set desired options that will affect the size of the bitmap
+        BitmapFactory.Options options = new Options();
+        options.inScaled = true;
+        options.inPurgeable = true;
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
+            options.inPreferQualityOverSpeed = false;
+        }
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
+            options.inMutable = false;
+        }
+        // make a false load of the bitmap - just to be able to read outWidth, outHeight and outMimeType
+        options.inJustDecodeBounds = true;
+        BitmapFactory.decodeFile(storagePath, options);
+
+        int width = options.outWidth;
+        int height = options.outHeight;
+        int scale = 1;
+
+        Display display = getActivity().getWindowManager().getDefaultDisplay();
+        Point size = new Point();
+        int screenWidth;
+        int screenHeight;
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
+            display.getSize(size);
+            screenWidth = size.x;
+            screenHeight = size.y;
+        } else {
+            screenWidth = display.getWidth();
+            screenHeight = display.getHeight();
+        }
+
+        if (width > screenWidth) {
+            // second try to scale down the image , this time depending upon the screen size 
+            scale = (int) Math.floor((float)width / screenWidth);
+        }
+        if (height > screenHeight) {
+            scale = Math.max(scale, (int) Math.floor((float)height / screenHeight));
+        }
+        options.inSampleSize = scale;
+
+        // really load the bitmap
+        options.inJustDecodeBounds = false; // the next decodeFile call will be real
+        return BitmapFactory.decodeFile(storagePath, options);
+
+    }
 }