Windows Phone Crosswords

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Crosswords.Controls;
using System.Windows.Navigation;
using Crosswords.WebHelper;
using Crosswords.Core;
using System.Text;
using System.Text.RegularExpressions;
using Crosswords.Models;
using System.Collections.Specialized;
using Microsoft.Phone.Shell;
using Microsoft.Devices;

namespace Crosswords
{
    public partial class Board : PhoneApplicationPage
    {
        int selectedSize = 10;
        BoardViewModel boardViewModel;
        Point swipeDownPoint;
        Point swipeMovePoint;
        Point swipeUpPoint;
        private ApplicationBarIconButton btnRefresh;
        private ApplicationBarIconButton btnQuestion;
        private ApplicationBarIconButton btnCheck;
        private ApplicationBarIconButton btnWrite;

        public Board()
        {
            InitializeComponent();
            InitAppBar();
            customKeyboard.KeyPressed += new CustomKeyboard.CustomKeypressed(customKeyboard_KeyPressed);
        }

        void customKeyboard_KeyPressed(object sender, CustomKeyEventArgs customKeyEventArgs)
        {
            VibrateController vibrate = VibrateController.Default;
            vibrate.Start(TimeSpan.FromMilliseconds(25));
            boardViewModel.TypeLetter(customKeyEventArgs.Key);
            if (!boardViewModel.Squares.Where(s => s.IsSelected).Any())
            {
                ShowClues();
            }
        }

        private void InitAppBar()
        {
            var buttonNames = new string[] { "refresh", "write", "clues", "solve" };

            ApplicationBar appBar = new ApplicationBar();
            appBar.IsVisible = true;
            appBar.IsMenuEnabled = true;
            appBar.Opacity = 1.0;
            appBar.ForegroundColor = Colors.Black;
            appBar.BackgroundColor = Color.FromArgb(0xFF, 0xDD, 0xDD, 0xDD);
            foreach (var buttonName in buttonNames)
            {
                var button = new ApplicationBarIconButton(new Uri(string.Format("images/{0}.png", buttonName), UriKind.Relative));
                button.Click += new EventHandler(AppBarIconButton_Click);
                button.Text = buttonName;
                appBar.Buttons.Add(button);
            }

            btnRefresh = appBar.Buttons[0] as ApplicationBarIconButton;
            btnRefresh.IsEnabled = false;
            btnWrite = appBar.Buttons[1] as ApplicationBarIconButton;
            btnQuestion = appBar.Buttons[2] as ApplicationBarIconButton;
            btnQuestion.IsEnabled = false;
            btnCheck = appBar.Buttons[3] as ApplicationBarIconButton;

            ApplicationBar = appBar;
        }

        void AppBarIconButton_Click(object sender, EventArgs e)
        {
            var btn = (ApplicationBarIconButton)sender;
            switch (btn.Text)
            {
                case "refresh":
                    RefreshGrid();
                    break;
                case "write":
                    ShowKeyboard();
                    break;
                case "clues":
                    ShowClues();
                    break;
                case "solve":
                    SolvePuzzle();
                    break;
                default:
                    break;
            }
        }

        private void RefreshGrid()
        {
            foreach (var item in grdTileContainer.Children)
            {
                var tile = item as Tile;
                tile.txtLetter.Text = "";
                tile.txtLetter.Visibility = System.Windows.Visibility.Collapsed;
                tile.txtUserLetter.Visibility = System.Windows.Visibility.Collapsed;
                tile.txtUserLetter.Text = "";
            }
            boardViewModel.LoadGrid();
        }

        private void ShowKeyboard()
        {
            btnQuestion.IsEnabled = true;
            btnWrite.IsEnabled = false;
            customKeyboard.Visibility = System.Windows.Visibility.Visible;
            txtClue.Visibility = System.Windows.Visibility.Collapsed;
        }

        private void ShowClues()
        {
            btnQuestion.IsEnabled = false;
            btnWrite.IsEnabled = true;
            customKeyboard.Visibility = System.Windows.Visibility.Collapsed;
            txtClue.Visibility = System.Windows.Visibility.Visible;
        }

        void Touch_FrameReported(object sender, TouchFrameEventArgs e)
        {
            try
            {
                var touchPoint = e.GetPrimaryTouchPoint(grdTileContainer);
                if (touchPoint.Action == TouchAction.Down)
                {
                    swipeDownPoint = touchPoint.Position;
                }
                else if (touchPoint.Action == TouchAction.Move)
                {
                    swipeMovePoint = touchPoint.Position;
                }
                else if (touchPoint.Action == TouchAction.Up)
                {
                    swipeUpPoint = touchPoint.Position;

                    if (swipeDownPoint != new Point(0, 0) &&
                        swipeMovePoint != new Point(0, 0))
                    {
                        boardViewModel.SelectSquaresByPosition(grdTileContainer.ActualWidth, grdTileContainer.ActualHeight, swipeDownPoint, swipeUpPoint);

                        swipeDownPoint =
                        swipeMovePoint =
                        swipeUpPoint = new Point(0, 0);

                        ShowClues();
                    }
                }
            }
            catch (ArgumentException ex)
            {
            }
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            AfterEnteredPage();
            Touch.FrameReported += new TouchFrameEventHandler(Touch_FrameReported);
        }

        private void AfterEnteredPage()
        {
            int startMode = (int)StartMode.ResumeGame;

            if (this.NavigationContext.QueryString["StartMode"] != null)
            {
                startMode = int.Parse(this.NavigationContext.QueryString["StartMode"]);
                selectedSize = int.Parse(this.NavigationContext.QueryString["Size"]);
            }
            else
            {
                selectedSize = int.Parse(this.NavigationContext.QueryString["Size"]);
            }

            boardViewModel = new BoardViewModel(this.Dispatcher, selectedSize, SquaresChanged);
            boardViewModel.HtmlLoaded += new EventHandler(boardViewModel_HtmlLoaded);
            this.DataContext = boardViewModel;

            for (var i = 0; i < selectedSize; i++)
            {
                grdTileContainer.ColumnDefinitions.Add(new ColumnDefinition());
                grdTileContainer.RowDefinitions.Add(new RowDefinition());
            }

            for (var row = 0; row < selectedSize; row++)
            {
                for (var col = 0; col < selectedSize; col++)
                {
                    var tile = new Tile();
                    grdTileContainer.Children.Add(tile);
                    tile.SetValue(Grid.RowProperty, row);
                    tile.SetValue(Grid.ColumnProperty, col);
                    var fontSize = 28;
                    switch (selectedSize)
                    {
                        case 4:
                            fontSize = 52;
                            break;
                        case 7:
                            fontSize = 40;
                            break;
                        case 10:
                            fontSize = 28;
                            break;
                    }
                    tile.FontSize = fontSize;
                }
            }

            boardViewModel.LoadGrid();
        }

        void boardViewModel_HtmlLoaded(object sender, EventArgs e)
        {
            btnRefresh.IsEnabled = true;
        }

        private void lstClues_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var wordId = ((Clue)(lstClues.SelectedItem)).WordId;
            boardViewModel.SelectSquaresByWordId(wordId);
        }

        private void SquaresChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            Dispatcher.BeginInvoke(delegate
            {
                if (e.NewItems != null)
                {
                    foreach (var item in e.NewItems)
                    {
                        var square = (Square)item;
                        var tile = (Tile)grdTileContainer.Children[square.Row * selectedSize + square.Column];
                        if (square.Letter != null)
                        {
                            tile.Text = square.Letter;
                            tile.UserText = square.UserLetter;
                            tile.IsSelected = square.IsSelected;
                        }
                    }
                }
            });
        }

        private static void ShowUnexpectedError()
        {
            MessageBox.Show(@"We're sorry, but an unexpected connection error occurred. Please try again later.", "Oops!", MessageBoxButton.OK);
        }

        private void SolvePuzzle()
        {
            foreach (var item in grdTileContainer.Children)
            {
                var tile = (Tile)item;
                tile.ShowCorrectLetter();
            }
        }

        private void btnKeyboard_Click(object sender, EventArgs e)
        {
            btnWrite.IsEnabled = false;
            btnQuestion.IsEnabled = true;
            txtClue.Visibility = System.Windows.Visibility.Collapsed;
            customKeyboard.Visibility = System.Windows.Visibility.Visible;
        }

        private void btnQuestion_Click(object sender, EventArgs e)
        {
            btnWrite.IsEnabled = true;
            btnQuestion.IsEnabled = false;
            txtClue.Visibility = System.Windows.Visibility.Visible;
            customKeyboard.Visibility = System.Windows.Visibility.Collapsed;
        }

        private void btnCheck_Click(object sender, EventArgs e)
        {

        }
    }

    public enum StartMode
    {
        NewGame = 1,
        ResumeGame = 2
    }
}