package de.appetites.android.menuItemSearchAction;

/*
 * Copyright (C) 2012 Benjamin Mock
 *
 * 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.
 */
import vc.rux.englishpoems.free.R;
import android.content.Context;
import android.graphics.Color;
import android.support.v4.widget.SearchViewCompat;
import android.support.v4.widget.SearchViewCompat.OnQueryTextListenerCompat;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.TextView;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.actionbarsherlock.view.MenuItem.OnActionExpandListener;

/**
 * <p>
 * This class creates a MenuItem with an expandable and collapsable ActionView
 * for search purposes
 * </p>
 * 
 * <p>
 * It is based on the great ActionBar Sherlock of Jake Wharton. The problem with
 * the original SearchView is, that the style for the dark ActionBar is wrong;
 * i.e. black text on a dark gray background.
 * </p>
 * 
 * @author Benjamin Mock <mail@benjaminmock.de>
 */
public class MenuItemSearchAction extends EditText implements TextWatcher {

	private MenuItem searchItem;
	private OnQueryTextListenerCompat searchListener;

	
	public MenuItemSearchAction(Context context, MenuItem menuItem,
			OnQueryTextListenerCompat listener) {
		super(context);
		searchListener = listener;
		searchItem = menuItem;

		createMenuItem();
		// show search button on keyboard; this needs the setting of
		// TYPE_TEXT... to be shown
		setImeOptions(EditorInfo.IME_ACTION_SEARCH);
		setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
		setMaxLines(1);

		setTextColor(Color.WHITE);
		setBackgroundColor(Color.BLACK);
	}

	private MenuItemSearchAction(Context context) {
		super(context);
	}

	public static void bind(Context context, Menu menu, int menuItemId, OnQueryTextListenerCompat  listener) {
		final MenuItem itemSearch = menu.findItem(R.id.menuSearch);
		final View searchView = (View) itemSearch.getActionView();
		if (searchView != null) {
			SearchViewCompat.setOnQueryTextListener(searchView, listener);
		} else {
			new MenuItemSearchAction(context, itemSearch, listener);
		}
	}
	
	/**
	 * Listen for back button clicks, in order to close the keyboard and
	 * collapse the ActionView
	 */
	@Override
	public boolean onKeyPreIme(int keyCode, KeyEvent event) {
		if (event.getKeyCode() == KeyEvent.KEYCODE_BACK
				&& event.getAction() == KeyEvent.ACTION_UP) {
			searchItem.collapseActionView();
		}
		return super.dispatchKeyEvent(event);
	}

	/**
	 * Returns the the created MenuItem for customizations etc.
	 * 
	 * @return the MenuItem, which holds search ActionView
	 */
	public MenuItem getMenuItem() {
		return searchItem;
	}

	private void createMenuItem() {
		ActionBar.LayoutParams layoutParams = new ActionBar.LayoutParams(
				ViewGroup.LayoutParams.MATCH_PARENT,
				ViewGroup.LayoutParams.MATCH_PARENT);
		setLayoutParams(layoutParams);

		setHint(R.string.menuItemSearchHint);

		searchItem.setActionView(this);
		searchItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS
				| MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);

		searchItem.setOnActionExpandListener(new OnActionExpandListener() {

			@Override
			public boolean onMenuItemActionExpand(MenuItem item) {
				// open keyboard
				MenuItemSearchAction.this.setText("");
				MenuItemSearchAction.this.requestFocus();

				MenuItemSearchAction.this.postDelayed(new Runnable() {
					@Override
					public void run() {
						InputMethodManager imm = (InputMethodManager) getContext()
								.getSystemService(Context.INPUT_METHOD_SERVICE);
						imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);

					}
				}, 200);
				return true;
			}

			@Override
			public boolean onMenuItemActionCollapse(MenuItem item) {
				// close keyboard
				InputMethodManager imm = (InputMethodManager) getContext()
						.getSystemService(Context.INPUT_METHOD_SERVICE);
				imm.hideSoftInputFromWindow(
						MenuItemSearchAction.this.getWindowToken(), 0);

				return true;
			}
		});

		setOnEditorActionListener(new TextView.OnEditorActionListener() {
			@Override
			public boolean onEditorAction(TextView v, int actionId,
					KeyEvent event) {
				if (actionId == EditorInfo.IME_ACTION_SEARCH || event.getKeyCode() == KeyEvent.KEYCODE_ENTER) {
					searchItem.collapseActionView();
				} 
				return true;
			}
		});

		addTextChangedListener(this);

	}

	@Override
	public void onTextChanged(CharSequence s, int arg1, int arg2, int arg3) {

	}

	@Override
	public void beforeTextChanged(CharSequence s, int arg1, int arg2, int arg3) {

	}

	@Override
	public void afterTextChanged(Editable arg0) {
		searchListener.onQueryTextChange(getText().toString());
	}
}