Java tutorial
/** * Copyright (C) 2010-2012 Regis Montoya (aka r3gis - www.r3gis.fr) * This file is part of CSipSimple. * * CSipSimple is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * If you own a pjsip commercial license you can also redistribute it * and/or modify it under the terms of the GNU Lesser General Public License * as an android library. * * CSipSimple 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 CSipSimple. If not, see <http://www.gnu.org/licenses/>. */ package com.csipsimple.ui.filters; import android.content.ContentResolver; import android.content.ContentUris; import android.content.ContentValues; import android.content.Intent; import android.database.Cursor; import android.graphics.Color; import android.net.Uri; import android.os.Bundle; import android.provider.BaseColumns; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.support.v4.widget.CursorAdapter; import android.util.Log; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.Button; import android.widget.ListView; import android.widget.TextView; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; import com.csipsimple.R; import com.csipsimple.api.SipManager; import com.csipsimple.api.SipProfile; import com.csipsimple.models.Filter; import com.csipsimple.widgets.CSSListFragment; import com.csipsimple.widgets.DragnDropListView; import com.csipsimple.widgets.DragnDropListView.DropListener; import java.util.ArrayList; public class AccountFiltersListFragment extends CSSListFragment { private static final String THIS_FILE = "AccountFiltersListFragment"; private boolean dualPane; private Long curCheckFilterId = SipProfile.INVALID_ID; private View mHeaderView; private AccountFiltersListAdapter mAdapter; private long accountId; private final static String CURRENT_CHOICE = "curChoice"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } public void setAccountId(long accId) { accountId = accId; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); ListView lv = getListView(); //getListView().setSelector(R.drawable.transparent); lv.setCacheColorHint(Color.TRANSPARENT); // View management View detailsFrame = getActivity().findViewById(R.id.details); dualPane = detailsFrame != null && detailsFrame.getVisibility() == View.VISIBLE; if (savedInstanceState != null) { // Restore last state for checked position. curCheckFilterId = savedInstanceState.getLong(CURRENT_CHOICE, SipProfile.INVALID_ID); //curCheckWizard = savedInstanceState.getString(CURRENT_WIZARD); } setListShown(false); if (mAdapter == null) { if (mHeaderView != null) { lv.addHeaderView(mHeaderView, null, true); } mAdapter = new AccountFiltersListAdapter(getActivity(), null); //getListView().setEmptyView(getActivity().findViewById(R.id.progress_container)); //getActivity().findViewById(android.R.id.empty).setVisibility(View.GONE); setListAdapter(mAdapter); registerForContextMenu(lv); lv.setVerticalFadingEdgeEnabled(true); } if (dualPane) { // In dual-pane mode, the list view highlights the selected item. Log.d("lp", "dual pane mode"); lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE); //lv.setVerticalScrollbarPosition(View.SCROLLBAR_POSITION_LEFT); lv.setVerticalScrollBarEnabled(false); lv.setFadingEdgeLength(50); updateCheckedItem(); // Make sure our UI is in the correct state. //showDetails(curCheckPosition, curCheckWizard); } else { //getListView().setVerticalScrollbarPosition(View.SCROLLBAR_POSITION_RIGHT); lv.setVerticalScrollBarEnabled(true); lv.setFadingEdgeLength(100); } } @Override public void onResume() { super.onResume(); getLoaderManager().initLoader(0, null, this); } // Menu stuff @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { menu.add(R.string.add_filter).setIcon(android.R.drawable.ic_menu_add) .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { onClickAddFilter(); return true; } }).setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); super.onCreateOptionsMenu(menu, inflater); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Use custom drag and drop view -- reuse the one of accounts_edit_list View v = inflater.inflate(R.layout.accounts_edit_list, container, false); final DragnDropListView lv = (DragnDropListView) v.findViewById(android.R.id.list); lv.setGrabberId(R.id.grabber); // Setup the drop listener lv.setOnDropListener(new DropListener() { @Override public void drop(int from, int to) { Log.d(THIS_FILE, "Drop from " + from + " to " + to); int hvC = lv.getHeaderViewsCount(); from = Math.max(0, from - hvC); to = Math.max(0, to - hvC); int i; // First of all, compute what we get before move ArrayList<Long> orderedList = new ArrayList<Long>(); CursorAdapter ad = (CursorAdapter) getListAdapter(); for (i = 0; i < ad.getCount(); i++) { orderedList.add(ad.getItemId(i)); } // Then, invert in the current list the two items ids Long moved = orderedList.remove(from); orderedList.add(to, moved); // Finally save that in db ContentResolver cr = getActivity().getContentResolver(); for (i = 0; i < orderedList.size(); i++) { Uri uri = ContentUris.withAppendedId(SipManager.FILTER_ID_URI_BASE, orderedList.get(i)); ContentValues cv = new ContentValues(); cv.put(Filter.FIELD_PRIORITY, i); cr.update(uri, cv, null, null); } } }); OnClickListener addClickButtonListener = new OnClickListener() { @Override public void onClick(View v) { onClickAddFilter(); } }; // Header view mHeaderView = inflater.inflate(R.layout.generic_add_header_list, container, false); mHeaderView.setOnClickListener(addClickButtonListener); ((TextView) mHeaderView.findViewById(R.id.text)).setText(R.string.add_filter); // Empty view Button bt = (Button) v.findViewById(android.R.id.empty); bt.setText(R.string.add_filter); bt.setOnClickListener(addClickButtonListener); return v; } private void updateCheckedItem() { if (curCheckFilterId != SipProfile.INVALID_ID) { for (int i = 0; i < getListAdapter().getCount(); i++) { long profId = getListAdapter().getItemId(i); if (profId == curCheckFilterId) { getListView().setItemChecked(i, true); } } } else { for (int i = 0; i < getListAdapter().getCount(); i++) { getListView().setItemChecked(i, false); } } } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putLong(CURRENT_CHOICE, curCheckFilterId); } @Override public void onListItemClick(ListView l, View v, int position, long id) { Log.d(THIS_FILE, "Checked " + position + " et " + id); ListView lv = getListView(); lv.setItemChecked(position, true); curCheckFilterId = id; showDetails(id); } /** * Helper function to show the details of a selected item, either by * displaying a fragment in-place in the current UI, or starting a * whole new activity in which it is displayed. */ private void showDetails(long filterId) { //curCheckPosition = index; /* if (dualPane) { // If we are not currently showing a fragment for the new // position, we need to create and install a new one. AccountEditFragment df = AccountEditFragment.newInstance(profileId); //df.setOnQuitListener(this); // Execute a transaction, replacing any existing fragment // with this one inside the frame. FragmentTransaction ft = getFragmentManager().beginTransaction(); ft.replace(R.id.details, df, null); // ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); ft.setTransition(FragmentTransaction.TRANSIT_NONE); //if(profileId != Profile.INVALID_ID) { // ft.addToBackStack(null); //} ft.commit(); } else { */ // Otherwise we need to launch a new activity to display // the dialog fragment with selected text. Intent it = new Intent(getActivity(), EditFilter.class); it.putExtra(Intent.EXTRA_UID, filterId); it.putExtra(Filter.FIELD_ACCOUNT, accountId); startActivity(it); /* } */ } @Override public Loader<Cursor> onCreateLoader(int id, Bundle args) { return new CursorLoader(getActivity(), SipManager.FILTER_URI, new String[] { BaseColumns._ID, Filter.FIELD_ACCOUNT, Filter.FIELD_ACTION, Filter.FIELD_MATCHES, Filter.FIELD_PRIORITY, Filter.FIELD_REPLACE }, Filter.FIELD_ACCOUNT + "=?", new String[] { Long.toString(accountId) }, Filter.DEFAULT_ORDER); } @Override public void onLoadFinished(Loader<Cursor> loader, Cursor data) { super.onLoadFinished(loader, data); // Select correct item if any updateCheckedItem(); } // Context menu stuff // Activate / deactive menu // Modify the account public static final int MENU_ITEM_MODIFY = Menu.FIRST; // Delete the account public static final int MENU_ITEM_DELETE = Menu.FIRST + 1; /** * Retrieve filter id from a given context menu info pressed * @param cmi The context menu info to retrieve infos from * @return corresponding filter id if everything goes well, -1 if not able to retrieve filter */ private long filterIdFromContextMenuInfo(ContextMenuInfo cmi) { AdapterView.AdapterContextMenuInfo info; try { info = (AdapterView.AdapterContextMenuInfo) cmi; } catch (ClassCastException e) { Log.e(THIS_FILE, "bad menuInfo", e); return -1; } return info.id; } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); final long filterId = filterIdFromContextMenuInfo(menuInfo); if (filterId == -1) { return; } menu.add(0, MENU_ITEM_MODIFY, 0, R.string.edit); menu.add(0, MENU_ITEM_DELETE, 0, R.string.delete_filter); } @Override public boolean onContextItemSelected(android.view.MenuItem item) { final long filterId = filterIdFromContextMenuInfo(item.getMenuInfo()); if (filterId == -1) { // For some reason the requested item isn't available, do nothing return super.onContextItemSelected(item); } switch (item.getItemId()) { case MENU_ITEM_DELETE: { getActivity().getContentResolver() .delete(ContentUris.withAppendedId(SipManager.FILTER_ID_URI_BASE, filterId), null, null); return true; } case MENU_ITEM_MODIFY: { showDetails(filterId); return true; } } return super.onContextItemSelected(item); } private void onClickAddFilter() { showDetails(-1); } @Override public void changeCursor(Cursor c) { if (mAdapter != null) { mAdapter.changeCursor(c); } } }