src/com/android/documentsui/StandaloneActivity.java - platform/packages/apps/DocumentsUI - Gitiles

 /*
  * 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_DOWN;
 import static com.android.documentsui.DirectoryFragment.ANIM_NONE;
 import static com.android.documentsui.DirectoryFragment.ANIM_UP;

 import android.app.Activity;
 import android.app.FragmentManager;
 import android.content.ActivityNotFoundException;
 import android.content.ClipData;
 import android.content.ContentResolver;
 import android.content.ContentValues;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.DocumentsContract;
 import android.provider.DocumentsContract.Root;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.BaseAdapter;
 import android.widget.Spinner;
 import android.widget.Toast;
 import android.widget.Toolbar;

 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 java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 /**
  * Activity providing a directly launchable file management activity.
  */
 public class StandaloneActivity extends BaseActivity {
     public static final String TAG = "StandaloneFileManagement";

     private Toolbar mToolbar;
     private Spinner mToolbarStack;
     private Toolbar mRootsToolbar;
     private DirectoryContainerView mDirectoryContainer;
     private State mState;
     private ItemSelectedListener mStackListener;
     private BaseAdapter mStackAdapter;

     public StandaloneActivity() {
         super(TAG);
     }

     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);

         setResult(Activity.RESULT_CANCELED);
         setContentView(R.layout.activity);

         final Context context = this;

         mDirectoryContainer = (DirectoryContainerView) findViewById(R.id.container_directory);

         mState = (icicle != null)
                 ? icicle.<State> getParcelable(EXTRA_STATE)
                 : buildDefaultState();

         mToolbar = (Toolbar) findViewById(R.id.toolbar);
         mToolbar.setTitleTextAppearance(context,
                 android.R.style.TextAppearance_DeviceDefault_Widget_ActionBar_Title);

         mStackAdapter = new StackAdapter();
         mStackListener = new ItemSelectedListener();
         mToolbarStack = (Spinner) findViewById(R.id.stack);
         mToolbarStack.setOnItemSelectedListener(mStackListener);

         mRootsToolbar = (Toolbar) findViewById(R.id.roots_toolbar);
         if (mRootsToolbar != null) {
             mRootsToolbar.setTitleTextAppearance(context,
                     android.R.style.TextAppearance_DeviceDefault_Widget_ActionBar_Title);
         }

         setActionBar(mToolbar);

         RootsFragment.show(getFragmentManager(), null);
         if (!mState.restored) {
             new RestoreStackTask().execute();

             // Show a failure dialog if there was a failed operation.
             final Intent intent = getIntent();
             final DocumentStack dstStack = intent.getParcelableExtra(CopyService.EXTRA_STACK);
             final int failure = intent.getIntExtra(CopyService.EXTRA_FAILURE, 0);
             final int transferMode = intent.getIntExtra(CopyService.EXTRA_TRANSFER_MODE,
                     CopyService.TRANSFER_MODE_NONE);
             if (failure != 0) {
                 final ArrayList<DocumentInfo> failedSrcList =
                         intent.getParcelableArrayListExtra(CopyService.EXTRA_SRC_LIST);
                 FailureDialogFragment.show(getFragmentManager(), failure, failedSrcList, dstStack,
                         transferMode);
             }
         } else {
             onCurrentDirectoryChanged(ANIM_NONE);
         }
     }

     private State buildDefaultState() {
         State state = new State();

         final Intent intent = getIntent();
         state.action = State.ACTION_BROWSE_ALL;
         state.acceptMimes = new String[] { "*/*" };
         state.allowMultiple = true;
         state.acceptMimes = new String[] { intent.getType() };
         state.localOnly = intent.getBooleanExtra(Intent.EXTRA_LOCAL_ONLY, false);
         state.forceAdvanced = intent.getBooleanExtra(DocumentsContract.EXTRA_SHOW_ADVANCED, false);
         state.showAdvanced = state.forceAdvanced
                 | LocalPreferences.getDisplayAdvancedDevices(this);
         state.showSize = true;
         final DocumentStack stack = intent.getParcelableExtra(CopyService.EXTRA_STACK);
         if (stack != null)
             state.stack = stack;

         return state;
     }

     @Override
     protected void onPostCreate(Bundle savedInstanceState) {
         super.onPostCreate(savedInstanceState);
         updateActionBar();
     }

     @Override
     public void updateActionBar() {
         final RootInfo root = getCurrentRoot();
         mToolbar.setNavigationIcon(
                 root != null ? root.loadToolbarIcon(mToolbar.getContext()) : null);
         mToolbar.setNavigationContentDescription(R.string.drawer_open);
         mToolbar.setNavigationOnClickListener(null);

         if (mSearchManager.isExpanded()) {
             mToolbar.setTitle(null);
             mToolbarStack.setVisibility(View.GONE);
             mToolbarStack.setAdapter(null);
         } else {
             if (mState.stack.size() <= 1) {
                 mToolbar.setTitle(root.title);
                 mToolbarStack.setVisibility(View.GONE);
                 mToolbarStack.setAdapter(null);
             } else {
                 mToolbar.setTitle(null);
                 mToolbarStack.setVisibility(View.VISIBLE);
                 mToolbarStack.setAdapter(mStackAdapter);

                 mStackListener.mIgnoreNextNavigation = true;
                 mToolbarStack.setSelection(mStackAdapter.getCount() - 1);
             }
         }
     }

     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         boolean showMenu = super.onCreateOptionsMenu(menu);

         expandMenus(menu);
         return showMenu;
     }

     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
         boolean shown = super.onPrepareOptionsMenu(menu);

         final RootInfo root = getCurrentRoot();
         final DocumentInfo cwd = getCurrentDirectory();

         final MenuItem createDir = menu.findItem(R.id.menu_create_dir);
         final MenuItem advanced = menu.findItem(R.id.menu_advanced);
         final MenuItem fileSize = menu.findItem(R.id.menu_file_size);
         final MenuItem settings = menu.findItem(R.id.menu_settings);

         createDir.setVisible(cwd != null
                 && cwd.isCreateSupported()
                 && !mSearchManager.isSearching()
                 && !root.isDownloads());

         fileSize.setVisible(cwd != null);
         advanced.setVisible(cwd != null);

         settings.setVisible((root.flags & Root.FLAG_HAS_SETTINGS) != 0);

         return shown;
     }

     @Override
     public void onBackPressed() {
         if (!mState.stackTouched) {
             super.onBackPressed();
             return;
         }

         final int size = mState.stack.size();
         if (size > 1) {
             mState.stack.pop();
             onCurrentDirectoryChanged(ANIM_UP);
         } else {
             super.onBackPressed();
         }
     }

     @Override
     public State getDisplayState() {
         return mState;
     }

     @Override
     void onDirectoryChanged(int anim) {
         final FragmentManager fm = getFragmentManager();
         final RootInfo root = getCurrentRoot();
         final DocumentInfo cwd = getCurrentDirectory();

         mDirectoryContainer.setDrawDisappearingFirst(anim == ANIM_DOWN);

         if (cwd == null) {
             DirectoryFragment.showRecentsOpen(fm, anim);

             // Start recents in grid when requesting visual things
             final boolean visualMimes = MimePredicate.mimeMatches(
                     MimePredicate.VISUAL_MIMES, mState.acceptMimes);
             mState.userMode = visualMimes ? State.MODE_GRID : State.MODE_LIST;
             mState.derivedMode = mState.userMode;
         } else {
             if (mState.currentSearch != null) {
                 // Ongoing search
                 DirectoryFragment.showSearch(fm, root, mState.currentSearch, anim);
             } else {
                 // Normal boring directory
                 DirectoryFragment.showNormal(fm, root, cwd, anim);
             }
         }
     }

     @Override
     public void onDocumentPicked(DocumentInfo doc) {
         if (doc.isDirectory()) {
             mState.stack.push(doc);
             mState.stackTouched = true;
             onCurrentDirectoryChanged(ANIM_DOWN);
         } else {
             // Fall back to viewing
             final Intent view = new Intent(Intent.ACTION_VIEW);
             view.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
             view.setData(doc.derivedUri);

             try {
                 startActivity(view);
             } catch (ActivityNotFoundException ex2) {
                 Toast.makeText(this, R.string.toast_no_application, Toast.LENGTH_SHORT).show();
             }
         }
     }

     @Override
     public void onDocumentsPicked(List<DocumentInfo> docs) {
         // TODO
     }

     @Override
     void saveStackBlocking() {
         final ContentResolver resolver = getContentResolver();
         final ContentValues values = new ContentValues();

         final byte[] rawStack = DurableUtils.writeToArrayOrNull(
                 getDisplayState().stack);

         // Remember location for next app launch
         final String packageName = getCallingPackageMaybeExtra();
         values.clear();
         values.put(ResumeColumns.STACK, rawStack);
         values.put(ResumeColumns.EXTERNAL, 0);
         resolver.insert(RecentsProvider.buildResume(packageName), values);
     }

     @Override
     void onTaskFinished(Uri... uris) {
         Log.d(TAG, "onFinished() " + Arrays.toString(uris));

         final Intent intent = new Intent();
         if (uris.length == 1) {
             intent.setData(uris[0]);
         } else if (uris.length > 1) {
             final ClipData clipData = new ClipData(
                     null, mState.acceptMimes, new ClipData.Item(uris[0]));
             for (int i = 1; i < uris.length; i++) {
                 clipData.addItem(new ClipData.Item(uris[i]));
             }
             intent.setClipData(clipData);
         }

         intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
                 | Intent.FLAG_GRANT_WRITE_URI_PERMISSION
                 | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);

         setResult(Activity.RESULT_OK, intent);
         finish();
     }
 }
	/*
	* 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_DOWN;
	import static com.android.documentsui.DirectoryFragment.ANIM_NONE;
	import static com.android.documentsui.DirectoryFragment.ANIM_UP;

	import android.app.Activity;
	import android.app.FragmentManager;
	import android.content.ActivityNotFoundException;
	import android.content.ClipData;
	import android.content.ContentResolver;
	import android.content.ContentValues;
	import android.content.Context;
	import android.content.Intent;
	import android.net.Uri;
	import android.os.Bundle;
	import android.provider.DocumentsContract;
	import android.provider.DocumentsContract.Root;
	import android.util.Log;
	import android.view.Menu;
	import android.view.MenuItem;
	import android.view.View;
	import android.widget.BaseAdapter;
	import android.widget.Spinner;
	import android.widget.Toast;
	import android.widget.Toolbar;

	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 java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	/**
	* Activity providing a directly launchable file management activity.
	*/
	public class StandaloneActivity extends BaseActivity {
	public static final String TAG = "StandaloneFileManagement";

	private Toolbar mToolbar;
	private Spinner mToolbarStack;
	private Toolbar mRootsToolbar;
	private DirectoryContainerView mDirectoryContainer;
	private State mState;
	private ItemSelectedListener mStackListener;
	private BaseAdapter mStackAdapter;

	public StandaloneActivity() {
	super(TAG);
	}

	@Override
	public void onCreate(Bundle icicle) {
	super.onCreate(icicle);

	setResult(Activity.RESULT_CANCELED);
	setContentView(R.layout.activity);

	final Context context = this;

	mDirectoryContainer = (DirectoryContainerView) findViewById(R.id.container_directory);

	mState = (icicle != null)
	? icicle.<State> getParcelable(EXTRA_STATE)
	: buildDefaultState();

	mToolbar = (Toolbar) findViewById(R.id.toolbar);
	mToolbar.setTitleTextAppearance(context,
	android.R.style.TextAppearance_DeviceDefault_Widget_ActionBar_Title);

	mStackAdapter = new StackAdapter();
	mStackListener = new ItemSelectedListener();
	mToolbarStack = (Spinner) findViewById(R.id.stack);
	mToolbarStack.setOnItemSelectedListener(mStackListener);

	mRootsToolbar = (Toolbar) findViewById(R.id.roots_toolbar);
	if (mRootsToolbar != null) {
	mRootsToolbar.setTitleTextAppearance(context,
	android.R.style.TextAppearance_DeviceDefault_Widget_ActionBar_Title);
	}

	setActionBar(mToolbar);

	RootsFragment.show(getFragmentManager(), null);
	if (!mState.restored) {
	new RestoreStackTask().execute();

	// Show a failure dialog if there was a failed operation.
	final Intent intent = getIntent();
	final DocumentStack dstStack = intent.getParcelableExtra(CopyService.EXTRA_STACK);
	final int failure = intent.getIntExtra(CopyService.EXTRA_FAILURE, 0);
	final int transferMode = intent.getIntExtra(CopyService.EXTRA_TRANSFER_MODE,
	CopyService.TRANSFER_MODE_NONE);
	if (failure != 0) {
	final ArrayList<DocumentInfo> failedSrcList =
	intent.getParcelableArrayListExtra(CopyService.EXTRA_SRC_LIST);
	FailureDialogFragment.show(getFragmentManager(), failure, failedSrcList, dstStack,
	transferMode);
	}
	} else {
	onCurrentDirectoryChanged(ANIM_NONE);
	}
	}

	private State buildDefaultState() {
	State state = new State();

	final Intent intent = getIntent();
	state.action = State.ACTION_BROWSE_ALL;
	state.acceptMimes = new String[] { "/" };
	state.allowMultiple = true;
	state.acceptMimes = new String[] { intent.getType() };
	state.localOnly = intent.getBooleanExtra(Intent.EXTRA_LOCAL_ONLY, false);
	state.forceAdvanced = intent.getBooleanExtra(DocumentsContract.EXTRA_SHOW_ADVANCED, false);
	state.showAdvanced = state.forceAdvanced
	\| LocalPreferences.getDisplayAdvancedDevices(this);
	state.showSize = true;
	final DocumentStack stack = intent.getParcelableExtra(CopyService.EXTRA_STACK);
	if (stack != null)
	state.stack = stack;

	return state;
	}

	@Override
	protected void onPostCreate(Bundle savedInstanceState) {
	super.onPostCreate(savedInstanceState);
	updateActionBar();
	}

	@Override
	public void updateActionBar() {
	final RootInfo root = getCurrentRoot();
	mToolbar.setNavigationIcon(
	root != null ? root.loadToolbarIcon(mToolbar.getContext()) : null);
	mToolbar.setNavigationContentDescription(R.string.drawer_open);
	mToolbar.setNavigationOnClickListener(null);

	if (mSearchManager.isExpanded()) {
	mToolbar.setTitle(null);
	mToolbarStack.setVisibility(View.GONE);
	mToolbarStack.setAdapter(null);
	} else {
	if (mState.stack.size() <= 1) {
	mToolbar.setTitle(root.title);
	mToolbarStack.setVisibility(View.GONE);
	mToolbarStack.setAdapter(null);
	} else {
	mToolbar.setTitle(null);
	mToolbarStack.setVisibility(View.VISIBLE);
	mToolbarStack.setAdapter(mStackAdapter);

	mStackListener.mIgnoreNextNavigation = true;
	mToolbarStack.setSelection(mStackAdapter.getCount() - 1);
	}
	}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	boolean showMenu = super.onCreateOptionsMenu(menu);

	expandMenus(menu);
	return showMenu;
	}

	@Override
	public boolean onPrepareOptionsMenu(Menu menu) {
	boolean shown = super.onPrepareOptionsMenu(menu);

	final RootInfo root = getCurrentRoot();
	final DocumentInfo cwd = getCurrentDirectory();

	final MenuItem createDir = menu.findItem(R.id.menu_create_dir);
	final MenuItem advanced = menu.findItem(R.id.menu_advanced);
	final MenuItem fileSize = menu.findItem(R.id.menu_file_size);
	final MenuItem settings = menu.findItem(R.id.menu_settings);

	createDir.setVisible(cwd != null
	&& cwd.isCreateSupported()
	&& !mSearchManager.isSearching()
	&& !root.isDownloads());

	fileSize.setVisible(cwd != null);
	advanced.setVisible(cwd != null);

	settings.setVisible((root.flags & Root.FLAG_HAS_SETTINGS) != 0);

	return shown;
	}

	@Override
	public void onBackPressed() {
	if (!mState.stackTouched) {
	super.onBackPressed();
	return;
	}

	final int size = mState.stack.size();
	if (size > 1) {
	mState.stack.pop();
	onCurrentDirectoryChanged(ANIM_UP);
	} else {
	super.onBackPressed();
	}
	}

	@Override
	public State getDisplayState() {
	return mState;
	}

	@Override
	void onDirectoryChanged(int anim) {
	final FragmentManager fm = getFragmentManager();
	final RootInfo root = getCurrentRoot();
	final DocumentInfo cwd = getCurrentDirectory();

	mDirectoryContainer.setDrawDisappearingFirst(anim == ANIM_DOWN);

	if (cwd == null) {
	DirectoryFragment.showRecentsOpen(fm, anim);

	// Start recents in grid when requesting visual things
	final boolean visualMimes = MimePredicate.mimeMatches(
	MimePredicate.VISUAL_MIMES, mState.acceptMimes);
	mState.userMode = visualMimes ? State.MODE_GRID : State.MODE_LIST;
	mState.derivedMode = mState.userMode;
	} else {
	if (mState.currentSearch != null) {
	// Ongoing search
	DirectoryFragment.showSearch(fm, root, mState.currentSearch, anim);
	} else {
	// Normal boring directory
	DirectoryFragment.showNormal(fm, root, cwd, anim);
	}
	}
	}

	@Override
	public void onDocumentPicked(DocumentInfo doc) {
	if (doc.isDirectory()) {
	mState.stack.push(doc);
	mState.stackTouched = true;
	onCurrentDirectoryChanged(ANIM_DOWN);
	} else {
	// Fall back to viewing
	final Intent view = new Intent(Intent.ACTION_VIEW);
	view.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
	view.setData(doc.derivedUri);

	try {
	startActivity(view);
	} catch (ActivityNotFoundException ex2) {
	Toast.makeText(this, R.string.toast_no_application, Toast.LENGTH_SHORT).show();
	}
	}
	}

	@Override
	public void onDocumentsPicked(List<DocumentInfo> docs) {
	// TODO
	}

	@Override
	void saveStackBlocking() {
	final ContentResolver resolver = getContentResolver();
	final ContentValues values = new ContentValues();

	final byte[] rawStack = DurableUtils.writeToArrayOrNull(
	getDisplayState().stack);

	// Remember location for next app launch
	final String packageName = getCallingPackageMaybeExtra();
	values.clear();
	values.put(ResumeColumns.STACK, rawStack);
	values.put(ResumeColumns.EXTERNAL, 0);
	resolver.insert(RecentsProvider.buildResume(packageName), values);
	}

	@Override
	void onTaskFinished(Uri... uris) {
	Log.d(TAG, "onFinished() " + Arrays.toString(uris));

	final Intent intent = new Intent();
	if (uris.length == 1) {
	intent.setData(uris[0]);
	} else if (uris.length > 1) {
	final ClipData clipData = new ClipData(
	null, mState.acceptMimes, new ClipData.Item(uris[0]));
	for (int i = 1; i < uris.length; i++) {
	clipData.addItem(new ClipData.Item(uris[i]));
	}
	intent.setClipData(clipData);
	}

	intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
	\| Intent.FLAG_GRANT_WRITE_URI_PERMISSION
	\| Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);

	setResult(Activity.RESULT_OK, intent);
	finish();
	}
	}