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/*
* Copyright (C) 2016 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 android.annotation.Nullable;
import android.provider.DocumentsContract.Root;
import android.view.Menu;
import android.view.MenuItem;
import com.android.documentsui.model.RootInfo;
public abstract class MenuManager {
final State mState;
final SearchViewManager mSearchManager;
public MenuManager(SearchViewManager searchManager, State displayState) {
mSearchManager = searchManager;
mState = displayState;
}
/** @See DirectoryFragment.SelectionModeListener#updateActionMenu */
public void updateActionMenu(Menu menu, SelectionDetails selection) {
updateOpen(menu.findItem(R.id.menu_open), selection);
updateDelete(menu.findItem(R.id.menu_delete), selection);
updateShare(menu.findItem(R.id.menu_share), selection);
updateRename(menu.findItem(R.id.menu_rename), selection);
updateSelectAll(menu.findItem(R.id.menu_select_all), selection);
updateMoveTo(menu.findItem(R.id.menu_move_to), selection);
updateCopyTo(menu.findItem(R.id.menu_copy_to), selection);
Menus.disableHiddenItems(menu);
}
/** @See Activity#onPrepareOptionsMenu */
public void updateOptionMenu(Menu menu, DirectoryDetails directoryDetails) {
updateCreateDir(menu.findItem(R.id.menu_create_dir), directoryDetails);
updateSettings(menu.findItem(R.id.menu_settings), directoryDetails);
updateNewWindow(menu.findItem(R.id.menu_new_window), directoryDetails);
updateFileSize(menu.findItem(R.id.menu_file_size), directoryDetails);
updateModePicker(menu.findItem(
R.id.menu_grid), menu.findItem(R.id.menu_list), directoryDetails);
updateSort(menu.findItem(R.id.menu_sort),
menu.findItem(R.id.menu_sort_size),
directoryDetails);
updateAdvanced(menu.findItem(R.id.menu_advanced), directoryDetails);
Menus.disableHiddenItems(menu);
}
/** @See DirectoryFragment.onCreateContextMenu */
public void updateContextMenu(Menu menu,
@Nullable SelectionDetails selectionDetails,
DirectoryDetails directoryDetails) {
MenuItem cut = menu.findItem(R.id.menu_cut_to_clipboard);
MenuItem copy = menu.findItem(R.id.menu_copy_to_clipboard);
MenuItem paste = menu.findItem(R.id.menu_paste_from_clipboard);
MenuItem delete = menu.findItem(R.id.menu_delete);
MenuItem rename = menu.findItem(R.id.menu_rename);
MenuItem createDir = menu.findItem(R.id.menu_create_dir);
if (selectionDetails == null) {
cut.setEnabled(false);
copy.setEnabled(false);
rename.setEnabled(false);
delete.setEnabled(false);
} else {
copy.setEnabled(!selectionDetails.containsPartialFiles());
cut.setEnabled(
!selectionDetails.containsPartialFiles() && selectionDetails.canDelete());
updateRename(rename, selectionDetails);
updateDelete(delete, selectionDetails);
}
menu.findItem(R.id.menu_paste_from_clipboard)
.setEnabled(directoryDetails.hasItemsToPaste());
updateCreateDir(createDir, directoryDetails);
//Cut, Copy, Paste and Delete should always be visible
cut.setVisible(true);
copy.setVisible(true);
paste.setVisible(true);
delete.setVisible(true);
}
public void updateRootContextMenu(Menu menu, RootInfo root) {
MenuItem settings = menu.findItem(R.id.menu_settings);
MenuItem eject = menu.findItem(R.id.menu_eject_root);
updateSettings(settings, root);
updateEject(eject, root);
}
void updateModePicker(MenuItem grid, MenuItem list, DirectoryDetails directoryDetails) {
grid.setVisible(mState.derivedMode != State.MODE_GRID);
list.setVisible(mState.derivedMode != State.MODE_LIST);
}
void updateFileSize(MenuItem fileSize, DirectoryDetails directoryDetails) {
fileSize.setVisible(!mState.forceSize);
fileSize.setTitle(directoryDetails.getDisplayFileSize()
? R.string.menu_file_size_hide : R.string.menu_file_size_show);
}
void updateSort(MenuItem sort, MenuItem sortSize, DirectoryDetails directoryDetails) {
// Search uses backend ranking; no sorting, recents doesn't support sort.
sort.setEnabled(!directoryDetails.isInRecents() && !mSearchManager.isSearching());
sort.setVisible(true);
sortSize.setVisible(mState.showSize); // Only sort by size when file sizes are visible
}
void updateAdvanced(MenuItem advanced, DirectoryDetails directoryDetails) {
advanced.setVisible(mState.showAdvancedOption);
advanced.setTitle(mState.showAdvancedOption && mState.showAdvanced
? R.string.menu_advanced_hide : R.string.menu_advanced_show);
}
void updateSettings(MenuItem settings, DirectoryDetails directoryDetails) {
settings.setVisible(false);
}
void updateSettings(MenuItem settings, RootInfo root) {
settings.setVisible(false);
}
void updateEject(MenuItem eject, RootInfo root) {
eject.setVisible(false);
}
void updateNewWindow(MenuItem newWindow, DirectoryDetails directoryDetails) {
newWindow.setVisible(false);
}
void updateOpen(MenuItem open, SelectionDetails selectionDetails) {
open.setVisible(false);
}
void updateShare(MenuItem share, SelectionDetails selectionDetails) {
share.setVisible(false);
}
void updateDelete(MenuItem delete, SelectionDetails selectionDetails) {
delete.setVisible(false);
}
void updateRename(MenuItem rename, SelectionDetails selectionDetails) {
rename.setVisible(false);
}
void updateMoveTo(MenuItem moveTo, SelectionDetails selectionDetails) {
moveTo.setVisible(false);
}
void updateCopyTo(MenuItem copyTo, SelectionDetails selectionDetails) {
copyTo.setVisible(false);
}
abstract void updateSelectAll(MenuItem selectAll, SelectionDetails selectionDetails);
abstract void updateCreateDir(MenuItem createDir, DirectoryDetails directoryDetails);
/**
* Access to meta data about the selection.
*/
public interface SelectionDetails {
boolean containsDirectories();
boolean containsPartialFiles();
// TODO: Update these to express characteristics instead of answering concrete questions,
// since the answer to those questions is (or can be) activity specific.
boolean canDelete();
boolean canRename();
}
public static class DirectoryDetails {
private final BaseActivity mActivity;
public DirectoryDetails(BaseActivity activity) {
mActivity = activity;
}
public boolean shouldShowFancyFeatures() {
return Shared.shouldShowFancyFeatures(mActivity);
}
public boolean hasRootSettings() {
return mActivity.getCurrentRoot().hasSettings();
}
public boolean hasItemsToPaste() {
return false;
}
public boolean isInRecents() {
return mActivity.getCurrentDirectory() == null;
}
public boolean canCreateDirectory() {
return mActivity.canCreateDirectory();
}
public boolean getDisplayFileSize() {
return LocalPreferences.getDisplayFileSize(mActivity);
}
}
}
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