diff options
Diffstat (limited to 'app/src/main/java/se/leap/bitmaskclient/ProviderListFragment.java')
| -rw-r--r-- | app/src/main/java/se/leap/bitmaskclient/ProviderListFragment.java | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/app/src/main/java/se/leap/bitmaskclient/ProviderListFragment.java b/app/src/main/java/se/leap/bitmaskclient/ProviderListFragment.java new file mode 100644 index 00000000..db414d87 --- /dev/null +++ b/app/src/main/java/se/leap/bitmaskclient/ProviderListFragment.java @@ -0,0 +1,234 @@ +/**
+ * Copyright (c) 2013 LEAP Encryption Access Project and contributers
+ *
+ * This program 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.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+ package se.leap.bitmaskclient;
+
+import se.leap.bitmaskclient.R;
+import se.leap.bitmaskclient.ProviderListContent.ProviderItem;
+import android.app.Activity;
+import android.app.ListFragment;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ListView;
+
+/**
+ * A list fragment representing a list of Providers. This fragment
+ * also supports tablet devices by allowing list items to be given an
+ * 'activated' state upon selection. This helps indicate which item is
+ * currently being viewed in a {@link DashboardFragment}.
+ * <p>
+ * Activities containing this fragment MUST implement the {@link Callbacks}
+ * interface.
+ */
+public class ProviderListFragment extends ListFragment {
+
+ public static String TAG = "provider_list_fragment";
+ public static String SHOW_ALL_PROVIDERS = "show_all_providers";
+ public static String TOP_PADDING = "top padding from providerlistfragment";
+ private ProviderListAdapter<ProviderItem> content_adapter;
+
+ /**
+ * The serialization (saved instance state) Bundle key representing the
+ * activated item position. Only used on tablets.
+ */
+ private static final String STATE_ACTIVATED_POSITION = "activated_position";
+
+ /**
+ * The fragment's current callback object, which is notified of list item
+ * clicks.
+ */
+ private Callbacks mCallbacks = sDummyCallbacks;
+
+ /**
+ * The current activated item position. Only used on tablets.
+ */
+ private int mActivatedPosition = ListView.INVALID_POSITION;
+
+ /**
+ * A callback interface that all activities containing this fragment must
+ * implement. This mechanism allows activities to be notified of item
+ * selections.
+ */
+ public interface Callbacks {
+ /**
+ * Callback for when an item has been selected.
+ */
+ public void onItemSelected(String id);
+ }
+
+ /**
+ * A dummy implementation of the {@link Callbacks} interface that does
+ * nothing. Used only when this fragment is not attached to an activity.
+ */
+ private static Callbacks sDummyCallbacks = new Callbacks() {
+ @Override
+ public void onItemSelected(String id) {
+ }
+ };
+
+ /**
+ * Mandatory empty constructor for the fragment manager to instantiate the
+ * fragment (e.g. upon screen orientation changes).
+ */
+ public ProviderListFragment() {
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ if(getArguments().containsKey(SHOW_ALL_PROVIDERS))
+ content_adapter = new ProviderListAdapter<ProviderListContent.ProviderItem>(
+ getActivity(),
+ R.layout.provider_list_item,
+ ProviderListContent.ITEMS, getArguments().getBoolean(SHOW_ALL_PROVIDERS));
+ else
+ content_adapter = new ProviderListAdapter<ProviderListContent.ProviderItem>(
+ getActivity(),
+ R.layout.provider_list_item,
+ ProviderListContent.ITEMS);
+
+
+ setListAdapter(content_adapter);
+ }
+
+ @Override
+ public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
+ return inflater.inflate(R.layout.provider_list_fragment, container, false);
+ }
+
+ @Override
+ public void onViewCreated(View view, Bundle savedInstanceState) {
+ super.onViewCreated(view, savedInstanceState);
+
+ // Restore the previously serialized activated item position.
+ if (savedInstanceState != null
+ && savedInstanceState.containsKey(STATE_ACTIVATED_POSITION)) {
+ setActivatedPosition(savedInstanceState.getInt(STATE_ACTIVATED_POSITION));
+ }
+ if(getArguments() != null && getArguments().containsKey(TOP_PADDING)) {
+ int topPadding = getArguments().getInt(TOP_PADDING);
+ View current_view = getView();
+ getView().setPadding(current_view.getPaddingLeft(), topPadding, current_view.getPaddingRight(), current_view.getPaddingBottom());
+ }
+ }
+
+ @Override
+ public void onAttach(Activity activity) {
+ super.onAttach(activity);
+
+ // Activities containing this fragment must implement its callbacks.
+ if (!(activity instanceof Callbacks)) {
+ throw new IllegalStateException("Activity must implement fragment's callbacks.");
+ }
+
+ mCallbacks = (Callbacks) activity;
+ }
+
+ @Override
+ public void onDetach() {
+ super.onDetach();
+
+ // Reset the active callbacks interface to the dummy implementation.
+ mCallbacks = sDummyCallbacks;
+ }
+
+ @Override
+ public void onListItemClick(ListView listView, View view, int position, long id) {
+ super.onListItemClick(listView, view, position, id);
+
+ // Notify the active callbacks interface (the activity, if the
+ // fragment is attached to one) that an item has been selected.
+ mCallbacks.onItemSelected(ProviderListContent.ITEMS.get(position).name());
+
+ for(int item_position = 0; item_position < listView.getCount(); item_position++) {
+ if(item_position != position)
+ content_adapter.hide(item_position);
+ }
+ }
+
+ @Override
+ public void onSaveInstanceState(Bundle outState) {
+ super.onSaveInstanceState(outState);
+ if (mActivatedPosition != ListView.INVALID_POSITION) {
+ // Serialize and persist the activated item position.
+ outState.putInt(STATE_ACTIVATED_POSITION, mActivatedPosition);
+ }
+ }
+
+ public void notifyAdapter() {
+ content_adapter.notifyDataSetChanged();
+ }
+ /**
+ * Turns on activate-on-click mode. When this mode is on, list items will be
+ * given the 'activated' state when touched.
+ */
+ public void setActivateOnItemClick(boolean activateOnItemClick) {
+ // When setting CHOICE_MODE_SINGLE, ListView will automatically
+ // give items the 'activated' state when touched.
+ getListView().setChoiceMode(activateOnItemClick
+ ? ListView.CHOICE_MODE_SINGLE
+ : ListView.CHOICE_MODE_NONE);
+ }
+
+ private void setActivatedPosition(int position) {
+ if (position == ListView.INVALID_POSITION) {
+ getListView().setItemChecked(mActivatedPosition, false);
+ } else {
+ getListView().setItemChecked(position, true);
+ }
+
+ mActivatedPosition = position;
+ }
+
+ public void removeLastItem() {
+ unhideAll();
+ content_adapter.remove(content_adapter.getItem(content_adapter.getCount()-1));
+ content_adapter.notifyDataSetChanged();
+ }
+
+ public void addItem(ProviderItem provider) {
+ content_adapter.add(provider);
+ content_adapter.notifyDataSetChanged();
+ }
+
+ public void hideAllBut(int position) {
+ int real_count = content_adapter.getCount();
+ for(int i = 0; i < real_count;)
+ if(i != position) {
+ content_adapter.hide(i);
+ position--;
+ real_count--;
+ } else {
+ i++;
+ } + }
+
+ public void unhideAll() {
+ if(content_adapter != null) {
+ content_adapter.unHideAll();
+ content_adapter.notifyDataSetChanged();
+ }
+ }
+
+ /**
+ * @return a new instance of this ListFragment.
+ */
+ public static ProviderListFragment newInstance() {
+ return new ProviderListFragment();
+ }
+}
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