X-Git-Url: http://git.linex4red.de/pub/Android/ownCloud.git/blobdiff_plain/31827bce0c5e5d2d595610c08aad60ee3c2fe170..5dc43aab3cc1243f9989dd6a0c7dd3350c3f709b:/src/com/owncloud/android/ui/preview/PreviewImagePagerAdapter.java

diff --git a/src/com/owncloud/android/ui/preview/PreviewImagePagerAdapter.java b/src/com/owncloud/android/ui/preview/PreviewImagePagerAdapter.java
index b6b28375..a2536242 100644
--- a/src/com/owncloud/android/ui/preview/PreviewImagePagerAdapter.java
+++ b/src/com/owncloud/android/ui/preview/PreviewImagePagerAdapter.java
@@ -2,9 +2,8 @@
  *   Copyright (C) 2012-2013  ownCloud Inc.
  *
  *   This program is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation, either version 2 of the License, or
- *   (at your option) any later version.
+ *   it under the terms of the GNU General Public License version 2,
+ *   as published by the Free Software Foundation.
  *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -17,21 +16,16 @@
  */
 package com.owncloud.android.ui.preview;
 
-import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.HashSet;
+import java.util.Map;
 import java.util.Set;
 import java.util.Vector;
 
 import android.accounts.Account;
-import android.os.Bundle;
-import android.os.Parcelable;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentStatePagerAdapter;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v4.view.PagerAdapter;
-import android.util.Log;
-import android.view.View;
 import android.view.ViewGroup;
 
 import com.owncloud.android.datamodel.DataStorageManager;
@@ -52,8 +46,11 @@ public class PreviewImagePagerAdapter extends FragmentStatePagerAdapter {
     private Account mAccount;
     private Set<Object> mObsoleteFragments;
     private Set<Integer> mObsoletePositions;
+    private Set<Integer> mDownloadErrors;
     private DataStorageManager mStorageManager;
     
+    private Map<Integer, FileFragment> mCachedFragments;
+
     /*
     private final FragmentManager mFragmentManager;
     private FragmentTransaction mCurTransaction = null;
@@ -87,7 +84,9 @@ public class PreviewImagePagerAdapter extends FragmentStatePagerAdapter {
         mImageFiles = mStorageManager.getDirectoryImages(parentFolder); 
         mObsoleteFragments = new HashSet<Object>();
         mObsoletePositions = new HashSet<Integer>();
+        mDownloadErrors = new HashSet<Integer>();
         //mFragmentManager = fragmentManager;
+        mCachedFragments = new HashMap<Integer, FileFragment>();
     }
 
     
@@ -106,9 +105,16 @@ public class PreviewImagePagerAdapter extends FragmentStatePagerAdapter {
         Fragment fragment = null;
         if (file.isDown()) {
             fragment = new PreviewImageFragment(file, mAccount, mObsoletePositions.contains(Integer.valueOf(i)));
+            
+        } else if (mDownloadErrors.contains(Integer.valueOf(i))) {
+            fragment = new FileDownloadFragment(file, mAccount, true);
+            ((FileDownloadFragment)fragment).setError(true);
+            mDownloadErrors.remove(Integer.valueOf(i));
+            
         } else {
             fragment = new FileDownloadFragment(file, mAccount, mObsoletePositions.contains(Integer.valueOf(i)));
         }
+        mObsoletePositions.remove(Integer.valueOf(i));
         return fragment;
     }
 
@@ -126,12 +132,34 @@ public class PreviewImagePagerAdapter extends FragmentStatePagerAdapter {
         return mImageFiles.get(position).getFileName();
     }
 
+    
     public void updateFile(int position, OCFile file) {
-        mObsoleteFragments.add(instantiateItem(null, position));
+        FileFragment fragmentToUpdate = mCachedFragments.get(Integer.valueOf(position));
+        if (fragmentToUpdate != null) {
+            mObsoleteFragments.add(fragmentToUpdate);
+        }
         mObsoletePositions.add(Integer.valueOf(position));
         mImageFiles.set(position, file);
     }
     
+    
+    public void updateWithDownloadError(int position) {
+        FileFragment fragmentToUpdate = mCachedFragments.get(Integer.valueOf(position));
+        if (fragmentToUpdate != null) {
+            mObsoleteFragments.add(fragmentToUpdate);
+        }
+        mDownloadErrors.add(Integer.valueOf(position));
+    }
+    
+    public void clearErrorAt(int position) {
+        FileFragment fragmentToUpdate = mCachedFragments.get(Integer.valueOf(position));
+        if (fragmentToUpdate != null) {
+            mObsoleteFragments.add(fragmentToUpdate);
+        }
+        mDownloadErrors.remove(Integer.valueOf(position));
+    }
+    
+    
     @Override
     public int getItemPosition(Object object) {
         if (mObsoleteFragments.contains(object)) {
@@ -142,21 +170,26 @@ public class PreviewImagePagerAdapter extends FragmentStatePagerAdapter {
     }
 
 
-    /**
-     * Should not be used for not already started fragments...
-     *  
-     * @return
-     */
-    protected FileFragment getFragmentAt(int position) {
-        try {
-            return (FileFragment) instantiateItem(null, position);
-            
-        } catch (Exception e) {
-            return null;
-        }
+    @Override
+    public Object instantiateItem(ViewGroup container, int position) {
+        Object fragment = super.instantiateItem(container, position);
+        mCachedFragments.put(Integer.valueOf(position), (FileFragment)fragment);
+        return fragment;
+    }
+    
+    @Override
+    public void destroyItem(ViewGroup container, int position, Object object) {
+       mCachedFragments.remove(Integer.valueOf(position));
+       super.destroyItem(container, position, object);
     }
 
 
+    public boolean pendingErrorAt(int position) {
+        return mDownloadErrors.contains(Integer.valueOf(position));
+    }
+
+
+    
     /* -*
      * Called when a change in the shown pages is going to start being made.
      *