PowerToys/src/modules/launcher/PowerLauncher/MainWindow.xaml.cs

using System;
using System.ComponentModel;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media.Animation;
using System.Windows.Controls;
using System.Windows.Forms;
using Wox.Core.Plugin;
using Wox.Core.Resource;
using Wox.Helper;
using Wox.Infrastructure.UserSettings;
using Wox.ViewModel;
using Screen = System.Windows.Forms.Screen;
using ContextMenuStrip = System.Windows.Forms.ContextMenuStrip;
using DataFormats = System.Windows.DataFormats;
using DragEventArgs = System.Windows.DragEventArgs;
using KeyEventArgs = System.Windows.Input.KeyEventArgs;
using MessageBox = System.Windows.MessageBox;
using Microsoft.Toolkit.Wpf.UI.XamlHost;
using Windows.UI.Xaml.Controls;

namespace PowerLauncher
{
    public partial class MainWindow
    {

        #region Private Fields

        private readonly Storyboard _progressBarStoryboard = new Storyboard();
        private Settings _settings;
        private MainViewModel _viewModel;

        #endregion

        public MainWindow(Settings settings, MainViewModel mainVM)
        {
            DataContext = mainVM;
            _viewModel = mainVM;
            _settings = settings;
            InitializeComponent();
        }
        public MainWindow()
        {
            InitializeComponent();
        }

        private void OnClosing(object sender, CancelEventArgs e)
        {
            _viewModel.Save();
        }

        private void OnInitialized(object sender, EventArgs e)
        {
        }

        private void OnLoaded(object sender, RoutedEventArgs _)
        {
            // todo is there a way to set blur only once?
            //ThemeManager.Instance.SetBlurForWindow();
            //WindowsInteropHelper.DisableControlBox(this);
            //InitProgressbarAnimation();
            //InitializePosition();
            //// since the default main window visibility is visible
            //// so we need set focus during startup
            //QueryTextBox.Focus();

            //_viewModel.PropertyChanged += (o, e) =>
            //{
            //    if (e.PropertyName == nameof(MainViewModel.MainWindowVisibility))
            //    {
            //        if (Visibility == Visibility.Visible)
            //        {
            //            Activate();
            //            QueryTextBox.Focus();
            //            UpdatePosition();
            //            _settings.ActivateTimes++;
            //            if (!_viewModel.LastQuerySelected)
            //            {
            //                QueryTextBox.SelectAll();
            //                _viewModel.LastQuerySelected = true;
            //            }
            //        }
            //    }
            //};
            InitializePosition();
        }

        private void InitializePosition()
        {
            //Top = WindowTop();
            Left = WindowLeft();
            //_settings.WindowTop = Top;
            _settings.WindowLeft = Left;
        }

        //private void InitProgressbarAnimation()
        //{
        //    var da = new DoubleAnimation(ProgressBar.X2, ActualWidth + 100, new Duration(new TimeSpan(0, 0, 0, 0, 1600)));
        //    var da1 = new DoubleAnimation(ProgressBar.X1, ActualWidth, new Duration(new TimeSpan(0, 0, 0, 0, 1600)));
        //    Storyboard.SetTargetProperty(da, new PropertyPath("(Line.X2)"));
        //    Storyboard.SetTargetProperty(da1, new PropertyPath("(Line.X1)"));
        //    _progressBarStoryboard.Children.Add(da);
        //    _progressBarStoryboard.Children.Add(da1);
        //    _progressBarStoryboard.RepeatBehavior = RepeatBehavior.Forever;
        //    ProgressBar.BeginStoryboard(_progressBarStoryboard);
        //    _viewModel.ProgressBarVisibility = Visibility.Hidden;
        //}

        private void OnMouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left) DragMove();
        }

        //private void OnPreviewMouseButtonDown(object sender, MouseButtonEventArgs e)
        //{
        //    if (sender != null && e.OriginalSource != null)
        //    {
        //        var r = (ResultListBox)sender;
        //        var d = (DependencyObject)e.OriginalSource;
        //        var item = ItemsControl.ContainerFromElement(r, d) as ListBoxItem;
        //        var result = (ResultViewModel)item?.DataContext;
        //        if (result != null)
        //        {
        //            if (e.ChangedButton == MouseButton.Left)
        //            {
        //                _viewModel.OpenResultCommand.Execute(null);
        //            }
        //            else if (e.ChangedButton == MouseButton.Right)
        //            {
        //                _viewModel.LoadContextMenuCommand.Execute(null);
        //            }
        //        }
        //    }
        //}


        private void OnDrop(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                // Note that you can have more than one file.
                string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
                if (files[0].ToLower().EndsWith(".wox"))
                {
                    PluginManager.InstallPlugin(files[0]);
                }
                else
                {
                    MessageBox.Show(InternationalizationManager.Instance.GetTranslation("invalidWoxPluginFileFormat"));
                }
            }
            e.Handled = false;
        }

        private void OnPreviewDragOver(object sender, DragEventArgs e)
        {
            e.Handled = true;
        }

        private void OnContextMenusForSettingsClick(object sender, RoutedEventArgs e)
        {
        }

        private void OnDeactivated(object sender, EventArgs e)
        {
            if (_settings.HideWhenDeactive)
            {
                Hide();
            }
        }

        private void UpdatePosition()
        {
            if (_settings.RememberLastLaunchLocation)
            {
                Left = _settings.WindowLeft;
                Top = _settings.WindowTop;
            }
            else
            {
                Left = WindowLeft();
                //Top = WindowTop();
            }
        }

        private void OnLocationChanged(object sender, EventArgs e)
        {
            if (_settings.RememberLastLaunchLocation)
            {
                _settings.WindowLeft = Left;
                _settings.WindowTop = Top;
            }
        }

        private double WindowLeft()
        {
            var screen = Screen.FromPoint(System.Windows.Forms.Cursor.Position);
            var dip1 = WindowsInteropHelper.TransformPixelsToDIP(this, screen.WorkingArea.X, 0);
            var dip2 = WindowsInteropHelper.TransformPixelsToDIP(this, screen.WorkingArea.Width, 0);
            var left = (dip2.X - ActualWidth) / 2 + dip1.X;
            return left;
        }

        //private double WindowTop()
        //{
        //    var screen = Screen.FromPoint(System.Windows.Forms.Cursor.Position);
        //    var dip1 = WindowsInteropHelper.TransformPixelsToDIP(this, 0, screen.WorkingArea.Y);
        //    var dip2 = WindowsInteropHelper.TransformPixelsToDIP(this, 0, screen.WorkingArea.Height);
        //    var top = (dip2.Y - QueryTextBox.ActualHeight) / 4 + dip1.Y;
        //    return top;
        //}

        /// <summary>
        /// Register up and down key
        /// todo: any way to put this in xaml ?
        /// </summary>
        private void OnKeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Down)
            {
                _viewModel.SelectNextItemCommand.Execute(null);
                e.Handled = true;
            }
            else if (e.Key == Key.Up)
            {
                _viewModel.SelectPrevItemCommand.Execute(null);
                e.Handled = true;
            }
            else if (e.Key == Key.PageDown)
            {
                _viewModel.SelectNextPageCommand.Execute(null);
                e.Handled = true;
            }
            else if (e.Key == Key.PageUp)
            {
                _viewModel.SelectPrevPageCommand.Execute(null);
                e.Handled = true;
            }
        }

        //private void OnTextChanged(object sender, TextChangedEventArgs e)
        //{
        //    if (_viewModel.QueryTextCursorMovedToEnd)
        //    {
        //        QueryTextBox.CaretIndex = QueryTextBox.Text.Length;
        //        _viewModel.QueryTextCursorMovedToEnd = false;
        //    }
        //}

        private PowerLauncher.UI.LauncherControl _launcher = null;
        private void WindowsXamlHost_ChildChanged(object sender, EventArgs ev)
        {
            if (sender == null) return;

            var host = (WindowsXamlHost)sender;
            _launcher = (PowerLauncher.UI.LauncherControl)host.Child;
            _launcher.DataContext = _viewModel;
            _launcher.SearchBox.TextChanged += QueryTextBox_TextChanged;

            _launcher.SearchBox.Focus(Windows.UI.Xaml.FocusState.Programmatic);

            _viewModel.PropertyChanged += (o, e) =>
            {
                if (e.PropertyName == nameof(MainViewModel.MainWindowVisibility))
                {
                    if (Visibility == System.Windows.Visibility.Visible)
                    {
                        Activate();
                        _launcher.SearchBox.Focus(Windows.UI.Xaml.FocusState.Programmatic);
                        UpdatePosition();
                        _settings.ActivateTimes++;
                        if (!_viewModel.LastQuerySelected)
                        {
                            _viewModel.LastQuerySelected = true;
                        }
                    }
                }
            };
        }
        private void QueryTextBox_TextChanged(Windows.UI.Xaml.Controls.AutoSuggestBox sender, Windows.UI.Xaml.Controls.AutoSuggestBoxTextChangedEventArgs args)
        {
            if (args.Reason == AutoSuggestionBoxTextChangeReason.UserInput)
            {
                if (_viewModel.QueryTextCursorMovedToEnd)
                {
                    _viewModel.QueryTextCursorMovedToEnd = false;
                }
            }
        }
    }
 }