michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.home;
michael@0: 
michael@0: import org.mozilla.gecko.R;
michael@0: import org.mozilla.gecko.db.BrowserDB.URLColumns;
michael@0: 
michael@0: import android.content.Context;
michael@0: import android.database.Cursor;
michael@0: import android.os.Bundle;
michael@0: import android.support.v4.app.DialogFragment;
michael@0: import android.support.v4.app.LoaderManager;
michael@0: import android.support.v4.app.LoaderManager.LoaderCallbacks;
michael@0: import android.support.v4.content.Loader;
michael@0: import android.support.v4.widget.CursorAdapter;
michael@0: import android.text.Editable;
michael@0: import android.text.TextUtils;
michael@0: import android.text.TextWatcher;
michael@0: import android.view.KeyEvent;
michael@0: import android.view.LayoutInflater;
michael@0: import android.view.View;
michael@0: import android.view.ViewGroup;
michael@0: import android.view.WindowManager;
michael@0: import android.widget.AdapterView;
michael@0: import android.widget.EditText;
michael@0: import android.widget.ListView;
michael@0: 
michael@0: /**
michael@0:  * Dialog fragment that displays frecency search results, for pinning a site, in a GridView.
michael@0:  */
michael@0: class PinSiteDialog extends DialogFragment {
michael@0:     // Listener for url selection
michael@0:     public static interface OnSiteSelectedListener {
michael@0:         public void onSiteSelected(String url, String title);
michael@0:     }
michael@0: 
michael@0:     // Cursor loader ID for search query
michael@0:     private static final int LOADER_ID_SEARCH = 0;
michael@0: 
michael@0:     // Holds the current search term to use in the query
michael@0:     private String mSearchTerm;
michael@0: 
michael@0:     // Adapter for the list of search results
michael@0:     private SearchAdapter mAdapter;
michael@0: 
michael@0:     // Search entry
michael@0:     private EditText mSearch;
michael@0: 
michael@0:     // Search results
michael@0:     private ListView mList;
michael@0: 
michael@0:     // Callbacks used for the search loader
michael@0:     private CursorLoaderCallbacks mLoaderCallbacks;
michael@0: 
michael@0:     // Bookmark selected listener
michael@0:     private OnSiteSelectedListener mOnSiteSelectedListener;
michael@0: 
michael@0:     public static PinSiteDialog newInstance() {
michael@0:         return new PinSiteDialog();
michael@0:     }
michael@0: 
michael@0:     private PinSiteDialog() {
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void onCreate(Bundle savedInstanceState) {
michael@0:         super.onCreate(savedInstanceState);
michael@0: 
michael@0:         setStyle(DialogFragment.STYLE_NO_TITLE, android.R.style.Theme_Holo_Light_Dialog);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
michael@0:         // All list views are styled to look the same with a global activity theme.
michael@0:         // If the style of the list changes, inflate it from an XML.
michael@0:         return inflater.inflate(R.layout.pin_site_dialog, container, false);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void onViewCreated(View view, Bundle savedInstanceState) {
michael@0:         super.onViewCreated(view, savedInstanceState);
michael@0: 
michael@0:         mSearch = (EditText) view.findViewById(R.id.search);
michael@0:         mSearch.addTextChangedListener(new TextWatcher() {
michael@0:             @Override
michael@0:             public void afterTextChanged(Editable s) {
michael@0:             }
michael@0: 
michael@0:             @Override
michael@0:             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
michael@0:             }
michael@0: 
michael@0:             @Override
michael@0:             public void onTextChanged(CharSequence s, int start, int before, int count) {
michael@0:                 setSearchTerm(mSearch.getText().toString());
michael@0:                 filter(mSearchTerm);
michael@0:             }
michael@0:         });
michael@0: 
michael@0:         mSearch.setOnKeyListener(new View.OnKeyListener() {
michael@0:             @Override
michael@0:             public boolean onKey(View v, int keyCode, KeyEvent event) {
michael@0:                 if (keyCode != KeyEvent.KEYCODE_ENTER || mOnSiteSelectedListener == null) {
michael@0:                     return false;
michael@0:                 }
michael@0: 
michael@0:                 // If the user manually entered a search term or URL, wrap the value in
michael@0:                 // a special URI until we can get a valid URL for this bookmark.
michael@0:                 final String text = mSearch.getText().toString().trim();
michael@0:                 if (!TextUtils.isEmpty(text)) {
michael@0:                     final String url = TopSitesPanel.encodeUserEnteredUrl(text);
michael@0:                     mOnSiteSelectedListener.onSiteSelected(url, text);
michael@0:                     dismiss();
michael@0:                 }
michael@0: 
michael@0:                 return true;
michael@0:             }
michael@0:         });
michael@0: 
michael@0:         mSearch.setOnFocusChangeListener(new View.OnFocusChangeListener() {
michael@0:             @Override
michael@0:             public void onFocusChange(View v, boolean hasFocus) {
michael@0:                 if (hasFocus) {
michael@0:                     getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
michael@0:                 }
michael@0:             }
michael@0:         });
michael@0: 
michael@0:         mList = (HomeListView) view.findViewById(R.id.list);
michael@0:         mList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
michael@0:             @Override
michael@0:             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
michael@0:                 if (mOnSiteSelectedListener != null) {
michael@0:                     final Cursor c = mAdapter.getCursor();
michael@0:                     if (c == null || !c.moveToPosition(position)) {
michael@0:                         return;
michael@0:                     }
michael@0: 
michael@0:                     final String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
michael@0:                     final String title = c.getString(c.getColumnIndexOrThrow(URLColumns.TITLE));
michael@0:                     mOnSiteSelectedListener.onSiteSelected(url, title);
michael@0:                 }
michael@0: 
michael@0:                 // Dismiss the fragment and the dialog.
michael@0:                 dismiss();
michael@0:             }
michael@0:         });
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void onActivityCreated(Bundle savedInstanceState) {
michael@0:         super.onActivityCreated(savedInstanceState);
michael@0: 
michael@0:         final LoaderManager manager = getLoaderManager();
michael@0: 
michael@0:         // Initialize the search adapter
michael@0:         mAdapter = new SearchAdapter(getActivity());
michael@0:         mList.setAdapter(mAdapter);
michael@0: 
michael@0:         // Create callbacks before the initial loader is started
michael@0:         mLoaderCallbacks = new CursorLoaderCallbacks();
michael@0: 
michael@0:         // Reconnect to the loader only if present
michael@0:         manager.initLoader(LOADER_ID_SEARCH, null, mLoaderCallbacks);
michael@0: 
michael@0:         // If there is a search term, put it in the text field
michael@0:         if (!TextUtils.isEmpty(mSearchTerm)) {
michael@0:             mSearch.setText(mSearchTerm);
michael@0:             mSearch.selectAll();
michael@0:         }
michael@0: 
michael@0:         // Always start with an empty filter
michael@0:         filter("");
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void onDestroyView() {
michael@0:         super.onDestroyView();
michael@0: 
michael@0:         // Discard any additional site selection as the dialog
michael@0:         // is getting destroyed (see bug 935542).
michael@0:         setOnSiteSelectedListener(null);
michael@0:     }
michael@0: 
michael@0:     public void setSearchTerm(String searchTerm) {
michael@0:         mSearchTerm = searchTerm;
michael@0:     }
michael@0: 
michael@0:     private void filter(String searchTerm) {
michael@0:         // Restart loaders with the new search term
michael@0:         SearchLoader.restart(getLoaderManager(), LOADER_ID_SEARCH, mLoaderCallbacks, searchTerm);
michael@0:     }
michael@0: 
michael@0:     public void setOnSiteSelectedListener(OnSiteSelectedListener listener) {
michael@0:         mOnSiteSelectedListener = listener;
michael@0:     }
michael@0: 
michael@0:     private static class SearchAdapter extends CursorAdapter {
michael@0:         private LayoutInflater mInflater;
michael@0: 
michael@0:         public SearchAdapter(Context context) {
michael@0:             super(context, null, 0);
michael@0:             mInflater = LayoutInflater.from(context);
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public void bindView(View view, Context context, Cursor cursor) {
michael@0:             TwoLinePageRow row = (TwoLinePageRow) view;
michael@0:             row.setShowIcons(false);
michael@0:             row.updateFromCursor(cursor);
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public View newView(Context context, Cursor cursor, ViewGroup parent) {
michael@0:             return (TwoLinePageRow) mInflater.inflate(R.layout.home_item_row, parent, false);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     private class CursorLoaderCallbacks implements LoaderCallbacks<Cursor> {
michael@0:         @Override
michael@0:         public Loader<Cursor> onCreateLoader(int id, Bundle args) {
michael@0:             return SearchLoader.createInstance(getActivity(), args);
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public void onLoadFinished(Loader<Cursor> loader, Cursor c) {
michael@0:             mAdapter.swapCursor(c);
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public void onLoaderReset(Loader<Cursor> loader) {
michael@0:             mAdapter.swapCursor(null);
michael@0:         }
michael@0:     }
michael@0: }