path: root/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/DrawerActivity.java

/*
 * 
 * from https://github.com/tobykurien/SherlockNavigationDrawer
 * 
 * Copyright 2013 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 org.sufficientlysecure.keychain.ui;

import org.sufficientlysecure.keychain.R;

import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.view.ActionProvider;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.SubMenu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;

/**
 * This example illustrates a common usage of the DrawerLayout widget in the Android support
 * library.
 * <p/>
 * <p>
 * When a navigation (left) drawer is present, the host activity should detect presses of the action
 * bar's Up affordance as a signal to open and close the navigation drawer. The
 * ActionBarDrawerToggle facilitates this behavior. Items within the drawer should fall into one of
 * two categories:
 * </p>
 * <p/>
 * <ul>
 * <li><strong>View switches</strong>. A view switch follows the same basic policies as list or tab
 * navigation in that a view switch does not create navigation history. This pattern should only be
 * used at the root activity of a task, leaving some form of Up navigation active for activities
 * further down the navigation hierarchy.</li>
 * <li><strong>Selective Up</strong>. The drawer allows the user to choose an alternate parent for
 * Up navigation. This allows a user to jump across an app's navigation hierarchy at will. The
 * application should treat this as it treats Up navigation from a different task, replacing the
 * current task stack using TaskStackBuilder or similar. This is the only form of navigation drawer
 * that should be used outside of the root activity of a task.</li>
 * </ul>
 * <p/>
 * <p>
 * Right side drawers should be used for actions, not navigation. This follows the pattern
 * established by the Action Bar that navigation should be to the left and actions to the right. An
 * action should be an operation performed on the current contents of the window, for example
 * enabling or disabling a data overlay on top of the current content.
 * </p>
 */
public class DrawerActivity extends SherlockFragmentActivity {
    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    private CharSequence mDrawerTitle;
    private CharSequence mTitle;
    private String[] mDrawerTitles;

    protected void setupDrawerNavigation(Bundle savedInstanceState) {
        // mTitle = mDrawerTitle = getTitle();
        mDrawerTitles = getResources().getStringArray(R.array.drawer_array);
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.left_drawer);

        // set a custom shadow that overlays the main content when the drawer
        // opens
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
        // set up the drawer's list view with items and click listener
        mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item,
                mDrawerTitles));
        mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

        // enable ActionBar app icon to behave as action to toggle nav drawer
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the sliding drawer and the action bar app icon
        mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
        mDrawerLayout, /* DrawerLayout object */
        R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
        R.string.drawer_open, /* "open drawer" description for accessibility */
        R.string.drawer_close /* "close drawer" description for accessibility */
        ) {
            public void onDrawerClosed(View view) {
                getSupportActionBar().setTitle(mTitle);
                supportInvalidateOptionsMenu(); // creates call to
                                                // onPrepareOptionsMenu()
            }

            public void onDrawerOpened(View drawerView) {
                getSupportActionBar().setTitle(mDrawerTitle);
                supportInvalidateOptionsMenu(); // creates call to
                                                // onPrepareOptionsMenu()
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            selectItem(0);
        }
    }

    /* Called whenever we call invalidateOptionsMenu() */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        // If the nav drawer is open, hide action items related to the content
        // view
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        // menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(final MenuItem item) {
        // The action bar home/up action should open or close the drawer.
        // ActionBarDrawerToggle will take care of this.
        if (mDrawerToggle.onOptionsItemSelected(getMenuItem(item))) {
            return true;
        }

        // Handle action buttons
        switch (item.getItemId()) {
        // case R.id.action_websearch:
        // // create intent to perform web search for this planet
        // Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
        // intent.putExtra(SearchManager.QUERY, getSupportActionBar().getTitle());
        // // catch event that there's no activity to handle intent
        // if (intent.resolveActivity(getPackageManager()) != null) {
        // startActivity(intent);
        // } else {
        // Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
        // }
        // return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    private android.view.MenuItem getMenuItem(final MenuItem item) {
        return new android.view.MenuItem() {
            @Override
            public int getItemId() {
                return item.getItemId();
            }

            public boolean isEnabled() {
                return true;
            }

            @Override
            public boolean collapseActionView() {
                return false;
            }

            @Override
            public boolean expandActionView() {
                return false;
            }

            @Override
            public ActionProvider getActionProvider() {
                return null;
            }

            @Override
            public View getActionView() {
                return null;
            }

            @Override
            public char getAlphabeticShortcut() {
                return 0;
            }

            @Override
            public int getGroupId() {
                return 0;
            }

            @Override
            public Drawable getIcon() {
                return null;
            }

            @Override
            public Intent getIntent() {
                return null;
            }

            @Override
            public ContextMenuInfo getMenuInfo() {
                return null;
            }

            @Override
            public char getNumericShortcut() {
                return 0;
            }

            @Override
            public int getOrder() {
                return 0;
            }

            @Override
            public SubMenu getSubMenu() {
                return null;
            }

            @Override
            public CharSequence getTitle() {
                return null;
            }

            @Override
            public CharSequence getTitleCondensed() {
                return null;
            }

            @Override
            public boolean hasSubMenu() {
                return false;
            }

            @Override
            public boolean isActionViewExpanded() {
                return false;
            }

            @Override
            public boolean isCheckable() {
                return false;
            }

            @Override
            public boolean isChecked() {
                return false;
            }

            @Override
            public boolean isVisible() {
                return false;
            }

            @Override
            public android.view.MenuItem setActionProvider(ActionProvider actionProvider) {
                return null;
            }

            @Override
            public android.view.MenuItem setActionView(View view) {
                return null;
            }

            @Override
            public android.view.MenuItem setActionView(int resId) {
                return null;
            }

            @Override
            public android.view.MenuItem setAlphabeticShortcut(char alphaChar) {
                return null;
            }

            @Override
            public android.view.MenuItem setCheckable(boolean checkable) {
                return null;
            }

            @Override
            public android.view.MenuItem setChecked(boolean checked) {
                return null;
            }

            @Override
            public android.view.MenuItem setEnabled(boolean enabled) {
                return null;
            }

            @Override
            public android.view.MenuItem setIcon(Drawable icon) {
                return null;
            }

            @Override
            public android.view.MenuItem setIcon(int iconRes) {
                return null;
            }

            @Override
            public android.view.MenuItem setIntent(Intent intent) {
                return null;
            }

            @Override
            public android.view.MenuItem setNumericShortcut(char numericChar) {
                return null;
            }

            @Override
            public android.view.MenuItem setOnActionExpandListener(OnActionExpandListener listener) {
                return null;
            }

            @Override
            public android.view.MenuItem setOnMenuItemClickListener(
                    OnMenuItemClickListener menuItemClickListener) {
                return null;
            }

            @Override
            public android.view.MenuItem setShortcut(char numericChar, char alphaChar) {
                return null;
            }

            @Override
            public void setShowAsAction(int actionEnum) {
            }

            @Override
            public android.view.MenuItem setShowAsActionFlags(int actionEnum) {
                return null;
            }

            @Override
            public android.view.MenuItem setTitle(CharSequence title) {
                return null;
            }

            @Override
            public android.view.MenuItem setTitle(int title) {
                return null;
            }

            @Override
            public android.view.MenuItem setTitleCondensed(CharSequence title) {
                return null;
            }

            @Override
            public android.view.MenuItem setVisible(boolean visible) {
                return null;
            }
        };
    }

    /* The click listner for ListView in the navigation drawer */
    private class DrawerItemClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            selectItem(position);
        }
    }

    private void selectItem(int position) {
        // update the main content by replacing fragments
        // Fragment fragment = new PlanetFragment();
        // Bundle args = new Bundle();
        // args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
        // fragment.setArguments(args);

        // FragmentManager fragmentManager = getSupportFragmentManager();
        // fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

        // update selected item and title, then close the drawer
        mDrawerList.setItemChecked(position, true);
        // setTitle(mDrawerTitles[position]);
        mDrawerLayout.closeDrawer(mDrawerList);
    }

    // @Override
    // public void setTitle(CharSequence title) {
    // mTitle = title;
    // getSupportActionBar().setTitle(mTitle);
    // }

    /**
     * When using the ActionBarDrawerToggle, you must call it during onPostCreate() and
     * onConfigurationChanged()...
     */

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggles
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    /**
     * Fragment that appears in the "content_frame", shows a planet
     */
    // public static class PlanetFragment extends SherlockFragment {
    // public static final String ARG_PLANET_NUMBER = "planet_number";
    //
    // public PlanetFragment() {
    // // Empty constructor required for fragment subclasses
    // }
    //
    // @Override
    // public View onCreateView(LayoutInflater inflater, ViewGroup container,
    // Bundle savedInstanceState) {
    // View rootView = inflater.inflate(R.layout.fragment_planet, container, false);
    // int i = getArguments().getInt(ARG_PLANET_NUMBER);
    // String planet = getResources().getStringArray(R.array.drawer_array)[i];
    //
    // int imageId = getResources().getIdentifier(planet.toLowerCase(Locale.getDefault()),
    // "drawable", getActivity().getPackageName());
    // ((ImageView) rootView.findViewById(R.id.image)).setImageResource(imageId);
    // getActivity().setTitle(planet);
    // return rootView;
    // }
    // }
}