+++ /dev/null
-/* ownCloud Android client application
- * 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 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
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.owncloud.android.ui.preview;
-
-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.support.v4.app.Fragment;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentStatePagerAdapter;
-import android.view.ViewGroup;
-
-import com.owncloud.android.datamodel.DataStorageManager;
-import com.owncloud.android.datamodel.OCFile;
-import com.owncloud.android.ui.fragment.FileFragment;
-
-/**
- * Adapter class that provides Fragment instances
- *
- * @author David A. Velasco
- */
-//public class PreviewImagePagerAdapter extends PagerAdapter {
-public class PreviewImagePagerAdapter extends FragmentStatePagerAdapter {
-
- private Vector<OCFile> mImageFiles;
- private Account mAccount;
- private Set<Object> mObsoleteFragments;
- private Set<Integer> mObsoletePositions;
- private Set<Integer> mDownloadErrors;
- private DataStorageManager mStorageManager;
-
- private Map<Integer, FileFragment> mCachedFragments;
-
- /**
- * Constructor.
- *
- * @param fragmentManager {@link FragmentManager} instance that will handle the {@link Fragment}s provided by the adapter.
- * @param parentFolder Folder where images will be searched for.
- * @param storageManager Bridge to database.
- */
- public PreviewImagePagerAdapter(FragmentManager fragmentManager, OCFile parentFolder, Account account, DataStorageManager storageManager) {
- super(fragmentManager);
-
- if (fragmentManager == null) {
- throw new IllegalArgumentException("NULL FragmentManager instance");
- }
- if (parentFolder == null) {
- throw new IllegalArgumentException("NULL parent folder");
- }
- if (storageManager == null) {
- throw new IllegalArgumentException("NULL storage manager");
- }
-
- mAccount = account;
- mStorageManager = storageManager;
- mImageFiles = mStorageManager.getDirectoryImages(parentFolder);
- mObsoleteFragments = new HashSet<Object>();
- mObsoletePositions = new HashSet<Integer>();
- mDownloadErrors = new HashSet<Integer>();
- //mFragmentManager = fragmentManager;
- mCachedFragments = new HashMap<Integer, FileFragment>();
- }
-
-
- /**
- * Returns the image files handled by the adapter.
- *
- * @return A vector with the image files handled by the adapter.
- */
- protected OCFile getFileAt(int position) {
- return mImageFiles.get(position);
- }
-
-
- public Fragment getItem(int i) {
- OCFile file = mImageFiles.get(i);
- 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;
- }
-
- public int getFilePosition(OCFile file) {
- return mImageFiles.indexOf(file);
- }
-
- @Override
- public int getCount() {
- return mImageFiles.size();
- }
-
- @Override
- public CharSequence getPageTitle(int position) {
- return mImageFiles.get(position).getFileName();
- }
-
-
- public void updateFile(int position, OCFile file) {
- 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)) {
- mObsoleteFragments.remove(object);
- return POSITION_NONE;
- }
- return super.getItemPosition(object);
- }
-
-
- @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.
- *
- * @param container The containing View which is displaying this adapter's page views.
- *- /
- @Override
- public void startUpdate(ViewGroup container) {
- Log.e(TAG, "** startUpdate");
- }
-
- @Override
- public Object instantiateItem(ViewGroup container, int position) {
- Log.e(TAG, "** instantiateItem " + position);
-
- if (mFragments.size() > position) {
- Fragment fragment = mFragments.get(position);
- if (fragment != null) {
- Log.e(TAG, "** \t returning cached item");
- return fragment;
- }
- }
-
- if (mCurTransaction == null) {
- mCurTransaction = mFragmentManager.beginTransaction();
- }
-
- Fragment fragment = getItem(position);
- if (mSavedState.size() > position) {
- Fragment.SavedState savedState = mSavedState.get(position);
- if (savedState != null) {
- // TODO WATCH OUT:
- // * The Fragment must currently be attached to the FragmentManager.
- // * A new Fragment created using this saved state must be the same class type as the Fragment it was created from.
- // * The saved state can not contain dependencies on other fragments -- that is it can't use putFragment(Bundle, String, Fragment)
- // to store a fragment reference
- fragment.setInitialSavedState(savedState);
- }
- }
- while (mFragments.size() <= position) {
- mFragments.add(null);
- }
- fragment.setMenuVisibility(false);
- mFragments.set(position, fragment);
- //Log.e(TAG, "** \t adding fragment at position " + position + ", containerId " + container.getId());
- mCurTransaction.add(container.getId(), fragment);
-
- return fragment;
- }
-
- @Override
- public void destroyItem(ViewGroup container, int position, Object object) {
- Log.e(TAG, "** destroyItem " + position);
- Fragment fragment = (Fragment)object;
-
- if (mCurTransaction == null) {
- mCurTransaction = mFragmentManager.beginTransaction();
- }
- Log.e(TAG, "** \t removing fragment at position " + position);
- while (mSavedState.size() <= position) {
- mSavedState.add(null);
- }
- mSavedState.set(position, mFragmentManager.saveFragmentInstanceState(fragment));
- mFragments.set(position, null);
-
- mCurTransaction.remove(fragment);
- }
-
- @Override
- public void setPrimaryItem(ViewGroup container, int position, Object object) {
- Fragment fragment = (Fragment)object;
- if (fragment != mCurrentPrimaryItem) {
- if (mCurrentPrimaryItem != null) {
- mCurrentPrimaryItem.setMenuVisibility(false);
- }
- if (fragment != null) {
- fragment.setMenuVisibility(true);
- }
- mCurrentPrimaryItem = fragment;
- }
- }
-
- @Override
- public void finishUpdate(ViewGroup container) {
- Log.e(TAG, "** finishUpdate (start)");
- if (mCurTransaction != null) {
- mCurTransaction.commitAllowingStateLoss();
- mCurTransaction = null;
- mFragmentManager.executePendingTransactions();
- }
- Log.e(TAG, "** finishUpdate (end)");
- }
-
- @Override
- public boolean isViewFromObject(View view, Object object) {
- return ((Fragment)object).getView() == view;
- }
-
- @Override
- public Parcelable saveState() {
- Bundle state = null;
- if (mSavedState.size() > 0) {
- state = new Bundle();
- Fragment.SavedState[] savedStates = new Fragment.SavedState[mSavedState.size()];
- mSavedState.toArray(savedStates);
- state.putParcelableArray("states", savedStates);
- }
- for (int i=0; i<mFragments.size(); i++) {
- Fragment fragment = mFragments.get(i);
- if (fragment != null) {
- if (state == null) {
- state = new Bundle();
- }
- String key = "f" + i;
- mFragmentManager.putFragment(state, key, fragment);
- }
- }
- return state;
- }
-
- @Override
- public void restoreState(Parcelable state, ClassLoader loader) {
- if (state != null) {
- Bundle bundle = (Bundle)state;
- bundle.setClassLoader(loader);
- Parcelable[] states = bundle.getParcelableArray("states");
- mSavedState.clear();
- mFragments.clear();
- if (states != null) {
- for (int i=0; i<states.length; i++) {
- mSavedState.add((Fragment.SavedState)states[i]);
- }
- }
- Iterable<String> keys = bundle.keySet();
- for (String key: keys) {
- if (key.startsWith("f")) {
- int index = Integer.parseInt(key.substring(1));
- Fragment f = mFragmentManager.getFragment(bundle, key);
- if (f != null) {
- while (mFragments.size() <= index) {
- mFragments.add(null);
- }
- f.setMenuVisibility(false);
- mFragments.set(index, f);
- } else {
- Log.w(TAG, "Bad fragment at key " + key);
- }
- }
- }
- }
- }
- */
-}
projects / pub / Android / ownCloud.git / blobdiff