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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 com.android.documentsui;
import static com.android.documentsui.DirectoryFragment.ANIM_NONE;
import static com.android.documentsui.DirectoryFragment.ANIM_SIDE;
import static com.android.documentsui.DirectoryFragment.ANIM_UP;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.Executor;
import libcore.io.IoUtils;
import android.app.Activity;
import android.app.Fragment;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.provider.DocumentsContract;
import android.provider.DocumentsContract.Root;
import android.util.Log;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MenuItem.OnActionExpandListener;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.SearchView;
import android.widget.SearchView.OnQueryTextListener;
import android.widget.TextView;
import com.android.documentsui.RecentsProvider.ResumeColumns;
import com.android.documentsui.model.DocumentInfo;
import com.android.documentsui.model.DocumentStack;
import com.android.documentsui.model.DurableUtils;
import com.android.documentsui.model.RootInfo;
import com.google.common.collect.Maps;
abstract class BaseActivity extends Activity {
static final String EXTRA_STATE = "state";
private final String mTag;
RootsCache mRoots;
public abstract State getDisplayState();
public abstract void onDocumentPicked(DocumentInfo doc);
public abstract void onDocumentsPicked(List<DocumentInfo> docs);
abstract void onTaskFinished(Uri... uris);
abstract void onDirectoryChanged(int anim);
abstract void updateActionBar();
abstract void saveStackBlocking();
public BaseActivity(String tag) {
mTag = tag;
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mRoots = DocumentsApplication.getRootsCache(this);
}
void onStackRestored(boolean restored, boolean external) {}
void onRootPicked(RootInfo root) {
State state = getDisplayState();
// Clear entire backstack and start in new root
state.stack.root = root;
state.stack.clear();
state.stackTouched = true;
if (!mRoots.isRecentsRoot(root)) {
new PickRootTask(root).executeOnExecutor(getCurrentExecutor());
} else {
onCurrentDirectoryChanged(ANIM_SIDE);
}
}
void expandMenus(Menu menu) {
for (int i = 0; i < menu.size(); i++) {
final MenuItem item = menu.getItem(i);
switch (item.getItemId()) {
case R.id.menu_advanced:
case R.id.menu_file_size:
break;
default:
item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
}
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
final int id = item.getItemId();
if (id == android.R.id.home) {
onBackPressed();
return true;
} else if (id == R.id.menu_create_dir) {
CreateDirectoryFragment.show(getFragmentManager());
return true;
} else if (id == R.id.menu_search) {
return false;
} else if (id == R.id.menu_sort_name) {
setUserSortOrder(State.SORT_ORDER_DISPLAY_NAME);
return true;
} else if (id == R.id.menu_sort_date) {
setUserSortOrder(State.SORT_ORDER_LAST_MODIFIED);
return true;
} else if (id == R.id.menu_sort_size) {
setUserSortOrder(State.SORT_ORDER_SIZE);
return true;
} else if (id == R.id.menu_grid) {
setUserMode(State.MODE_GRID);
return true;
} else if (id == R.id.menu_list) {
setUserMode(State.MODE_LIST);
return true;
} else if (id == R.id.menu_advanced) {
setDisplayAdvancedDevices(!LocalPreferences.getDisplayAdvancedDevices(this));
return true;
} else if (id == R.id.menu_file_size) {
setDisplayFileSize(!LocalPreferences.getDisplayFileSize(this));
return true;
} else if (id == R.id.menu_settings) {
final RootInfo root = getCurrentRoot();
final Intent intent = new Intent(DocumentsContract.ACTION_DOCUMENT_ROOT_SETTINGS);
intent.setDataAndType(DocumentsContract.buildRootUri(root.authority, root.rootId),
DocumentsContract.Root.MIME_TYPE_ITEM);
startActivity(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* Call this when directory changes. Prior to root fragment update
* the (abstract) directoryChanged method will be called.
* @param anim
*/
final void onCurrentDirectoryChanged(int anim) {
onDirectoryChanged(anim);
final RootsFragment roots = RootsFragment.get(getFragmentManager());
if (roots != null) {
roots.onCurrentRootChanged();
}
updateActionBar();
invalidateOptionsMenu();
}
final String getCallingPackageMaybeExtra() {
final String extra = getIntent().getStringExtra(DocumentsContract.EXTRA_PACKAGE_NAME);
return (extra != null) ? extra : getCallingPackage();
}
public static BaseActivity get(Fragment fragment) {
return (BaseActivity) fragment.getActivity();
}
public static abstract class DocumentsIntent {
/** Intent action name to open copy destination. */
public static String ACTION_OPEN_COPY_DESTINATION =
"com.android.documentsui.OPEN_COPY_DESTINATION";
/**
* Extra boolean flag for ACTION_OPEN_COPY_DESTINATION_STRING, which
* specifies if the destination directory needs to create new directory or not.
*/
public static String EXTRA_DIRECTORY_COPY = "com.android.documentsui.DIRECTORY_COPY";
}
public static class State implements android.os.Parcelable {
public int action;
public String[] acceptMimes;
/** Explicit user choice */
public int userMode = MODE_UNKNOWN;
/** Derived after loader */
public int derivedMode = MODE_LIST;
/** Explicit user choice */
public int userSortOrder = SORT_ORDER_UNKNOWN;
/** Derived after loader */
public int derivedSortOrder = SORT_ORDER_DISPLAY_NAME;
public boolean allowMultiple = false;
public boolean showSize = false;
public boolean localOnly = false;
public boolean forceAdvanced = false;
public boolean showAdvanced = false;
public boolean stackTouched = false;
public boolean restored = false;
public boolean directoryCopy = false;
/** Current user navigation stack; empty implies recents. */
public DocumentStack stack = new DocumentStack();
/** Currently active search, overriding any stack. */
public String currentSearch;
/** Instance state for every shown directory */
public HashMap<String, SparseArray<Parcelable>> dirState = Maps.newHashMap();
/** Currently copying file */
public List<DocumentInfo> selectedDocumentsForCopy = new ArrayList<DocumentInfo>();
public static final int ACTION_OPEN = 1;
public static final int ACTION_CREATE = 2;
public static final int ACTION_GET_CONTENT = 3;
public static final int ACTION_OPEN_TREE = 4;
public static final int ACTION_MANAGE = 5;
public static final int ACTION_BROWSE = 6;
public static final int ACTION_BROWSE_ALL = 7;
public static final int ACTION_OPEN_COPY_DESTINATION = 8;
public static final int MODE_UNKNOWN = 0;
public static final int MODE_LIST = 1;
public static final int MODE_GRID = 2;
public static final int SORT_ORDER_UNKNOWN = 0;
public static final int SORT_ORDER_DISPLAY_NAME = 1;
public static final int SORT_ORDER_LAST_MODIFIED = 2;
public static final int SORT_ORDER_SIZE = 3;
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeInt(action);
out.writeInt(userMode);
out.writeStringArray(acceptMimes);
out.writeInt(userSortOrder);
out.writeInt(allowMultiple ? 1 : 0);
out.writeInt(showSize ? 1 : 0);
out.writeInt(localOnly ? 1 : 0);
out.writeInt(forceAdvanced ? 1 : 0);
out.writeInt(showAdvanced ? 1 : 0);
out.writeInt(stackTouched ? 1 : 0);
out.writeInt(restored ? 1 : 0);
DurableUtils.writeToParcel(out, stack);
out.writeString(currentSearch);
out.writeMap(dirState);
out.writeList(selectedDocumentsForCopy);
}
public static final Creator<State> CREATOR = new Creator<State>() {
@Override
public State createFromParcel(Parcel in) {
final State state = new State();
state.action = in.readInt();
state.userMode = in.readInt();
state.acceptMimes = in.readStringArray();
state.userSortOrder = in.readInt();
state.allowMultiple = in.readInt() != 0;
state.showSize = in.readInt() != 0;
state.localOnly = in.readInt() != 0;
state.forceAdvanced = in.readInt() != 0;
state.showAdvanced = in.readInt() != 0;
state.stackTouched = in.readInt() != 0;
state.restored = in.readInt() != 0;
DurableUtils.readFromParcel(in, state.stack);
state.currentSearch = in.readString();
in.readMap(state.dirState, null);
in.readList(state.selectedDocumentsForCopy, null);
return state;
}
@Override
public State[] newArray(int size) {
return new State[size];
}
};
}
void setDisplayAdvancedDevices(boolean display) {
State state = getDisplayState();
LocalPreferences.setDisplayAdvancedDevices(this, display);
state.showAdvanced = state.forceAdvanced | display;
RootsFragment.get(getFragmentManager()).onDisplayStateChanged();
invalidateOptionsMenu();
}
void setDisplayFileSize(boolean display) {
LocalPreferences.setDisplayFileSize(this, display);
getDisplayState().showSize = display;
DirectoryFragment.get(getFragmentManager()).onDisplayStateChanged();
invalidateOptionsMenu();
}
void onStateChanged() {
invalidateOptionsMenu();
}
/**
* Set state sort order based on explicit user action.
*/
void setUserSortOrder(int sortOrder) {
getDisplayState().userSortOrder = sortOrder;
DirectoryFragment.get(getFragmentManager()).onUserSortOrderChanged();
}
/**
* Set state mode based on explicit user action.
*/
void setUserMode(int mode) {
getDisplayState().userMode = mode;
DirectoryFragment.get(getFragmentManager()).onUserModeChanged();
}
void setPending(boolean pending) {
final SaveFragment save = SaveFragment.get(getFragmentManager());
if (save != null) {
save.setPending(pending);
}
}
@Override
protected void onSaveInstanceState(Bundle state) {
super.onSaveInstanceState(state);
state.putParcelable(EXTRA_STATE, getDisplayState());
}
@Override
protected void onRestoreInstanceState(Bundle state) {
super.onRestoreInstanceState(state);
}
RootInfo getCurrentRoot() {
State state = getDisplayState();
if (state.stack.root != null) {
return state.stack.root;
} else {
return mRoots.getRecentsRoot();
}
}
public DocumentInfo getCurrentDirectory() {
return getDisplayState().stack.peek();
}
public Executor getCurrentExecutor() {
final DocumentInfo cwd = getCurrentDirectory();
if (cwd != null && cwd.authority != null) {
return ProviderExecutor.forAuthority(cwd.authority);
} else {
return AsyncTask.THREAD_POOL_EXECUTOR;
}
}
public void onStackPicked(DocumentStack stack) {
try {
// Update the restored stack to ensure we have freshest data
stack.updateDocuments(getContentResolver());
State state = getDisplayState();
state.stack = stack;
state.stackTouched = true;
onCurrentDirectoryChanged(ANIM_SIDE);
} catch (FileNotFoundException e) {
Log.w(mTag, "Failed to restore stack: " + e);
}
}
final class PickRootTask extends AsyncTask<Void, Void, DocumentInfo> {
private RootInfo mRoot;
public PickRootTask(RootInfo root) {
mRoot = root;
}
@Override
protected DocumentInfo doInBackground(Void... params) {
try {
final Uri uri = DocumentsContract.buildDocumentUri(
mRoot.authority, mRoot.documentId);
return DocumentInfo.fromUri(getContentResolver(), uri);
} catch (FileNotFoundException e) {
Log.w(mTag, "Failed to find root", e);
return null;
}
}
@Override
protected void onPostExecute(DocumentInfo result) {
if (result != null) {
State state = getDisplayState();
state.stack.push(result);
state.stackTouched = true;
onCurrentDirectoryChanged(ANIM_SIDE);
}
}
}
final class RestoreStackTask extends AsyncTask<Void, Void, Void> {
private volatile boolean mRestoredStack;
private volatile boolean mExternal;
@Override
protected Void doInBackground(Void... params) {
State state = getDisplayState();
RootsCache roots = DocumentsApplication.getRootsCache(BaseActivity.this);
// Restore last stack for calling package
final String packageName = getCallingPackageMaybeExtra();
final Cursor cursor = getContentResolver()
.query(RecentsProvider.buildResume(packageName), null, null, null, null);
try {
if (cursor.moveToFirst()) {
mExternal = cursor.getInt(cursor.getColumnIndex(ResumeColumns.EXTERNAL)) != 0;
final byte[] rawStack = cursor.getBlob(
cursor.getColumnIndex(ResumeColumns.STACK));
DurableUtils.readFromArray(rawStack, state.stack);
mRestoredStack = true;
}
} catch (IOException e) {
Log.w(mTag, "Failed to resume: " + e);
} finally {
IoUtils.closeQuietly(cursor);
}
if (mRestoredStack) {
// Update the restored stack to ensure we have freshest data
final Collection<RootInfo> matchingRoots = roots.getMatchingRootsBlocking(state);
try {
state.stack.updateRoot(matchingRoots);
state.stack.updateDocuments(getContentResolver());
} catch (FileNotFoundException e) {
Log.w(mTag, "Failed to restore stack: " + e);
state.stack.reset();
mRestoredStack = false;
}
}
return null;
}
@Override
protected void onPostExecute(Void result) {
if (isDestroyed()) return;
getDisplayState().restored = true;
onCurrentDirectoryChanged(ANIM_NONE);
onStackRestored(mRestoredStack, mExternal);
getDisplayState().restored = true;
onCurrentDirectoryChanged(ANIM_NONE);
}
}
final class ItemSelectedListener implements OnItemSelectedListener {
boolean mIgnoreNextNavigation;
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if (mIgnoreNextNavigation) {
mIgnoreNextNavigation = false;
return;
}
State state = getDisplayState();
while (state.stack.size() > position + 1) {
state.stackTouched = true;
state.stack.pop();
}
onCurrentDirectoryChanged(ANIM_UP);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// Ignored
}
}
/**
* Class providing toolbar with runtime access to useful activity data.
*/
final class StackAdapter extends BaseAdapter {
@Override
public int getCount() {
return getDisplayState().stack.size();
}
@Override
public DocumentInfo getItem(int position) {
State state = getDisplayState();
return state.stack.get(state.stack.size() - position - 1);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_subdir_title, parent, false);
}
final TextView title = (TextView) convertView.findViewById(android.R.id.title);
final DocumentInfo doc = getItem(position);
if (position == 0) {
final RootInfo root = getCurrentRoot();
title.setText(root.title);
} else {
title.setText(doc.displayName);
}
return convertView;
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_subdir, parent, false);
}
final ImageView subdir = (ImageView) convertView.findViewById(R.id.subdir);
final TextView title = (TextView) convertView.findViewById(android.R.id.title);
final DocumentInfo doc = getItem(position);
if (position == 0) {
final RootInfo root = getCurrentRoot();
title.setText(root.title);
subdir.setVisibility(View.GONE);
} else {
title.setText(doc.displayName);
subdir.setVisibility(View.VISIBLE);
}
return convertView;
}
}
/**
* Facade over the various search parts in the menu.
*/
final class SearchManager implements
SearchView.OnCloseListener, OnActionExpandListener, OnQueryTextListener {
protected boolean mSearchExpanded;
protected boolean mIgnoreNextClose;
protected boolean mIgnoreNextCollapse;
private MenuItem mMenu;
private SearchView mView;
public void install(MenuItem menu) {
assert(mMenu == null);
mMenu = menu;
mView = (SearchView) menu.getActionView();
mMenu.setOnActionExpandListener(this);
mView.setOnQueryTextListener(this);
mView.setOnCloseListener(this);
}
/**
* @param root Info about the current directory.
*/
void update(RootInfo root) {
if (mMenu == null) {
Log.d(mTag, "showMenu called before Search MenuItem installed.");
return;
}
State state = getDisplayState();
if (state.currentSearch != null) {
mMenu.expandActionView();
mView.setIconified(false);
mView.clearFocus();
mView.setQuery(state.currentSearch, false);
} else {
mIgnoreNextClose = true;
mView.setIconified(true);
mView.clearFocus();
mIgnoreNextCollapse = true;
mMenu.collapseActionView();
}
showMenu(root != null
&& ((root.flags & Root.FLAG_SUPPORTS_SEARCH) != 0));
}
void showMenu(boolean visible) {
if (mMenu == null) {
Log.d(mTag, "showMenu called before Search MenuItem installed.");
return;
}
mMenu.setVisible(visible);
}
boolean isSearching() {
return getDisplayState().currentSearch != null;
}
boolean isExpanded() {
return mSearchExpanded;
}
@Override
public boolean onClose() {
mSearchExpanded = false;
if (mIgnoreNextClose) {
mIgnoreNextClose = false;
return false;
}
getDisplayState().currentSearch = null;
onCurrentDirectoryChanged(ANIM_NONE);
return false;
}
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
mSearchExpanded = true;
updateActionBar();
return true;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
mSearchExpanded = false;
if (mIgnoreNextCollapse) {
mIgnoreNextCollapse = false;
return true;
}
getDisplayState().currentSearch = null;
onCurrentDirectoryChanged(ANIM_NONE);
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
mSearchExpanded = true;
getDisplayState().currentSearch = query;
mView.clearFocus();
onCurrentDirectoryChanged(ANIM_NONE);
return true;
}
@Override
public boolean onQueryTextChange(String newText) {
return false;
}
}
}
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