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Fixing gap in logic where query was triggering when programatically setting text.

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Updating the binding and settext both will trigger the TextChanged event on a seperate event dispatcher.  For this reason we dynamically detect which eventhandler is most approapriate on the textchanging event.
This commit is contained in:
ryanbodrug-microsoft 2020-04-25 09:34:16 -07:00
parent 15b7b20500
commit aa79325d76
3 changed files with 52 additions and 26 deletions
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1
src/modules/launcher/PowerLauncher.UI/LauncherControl.xaml
View File

@ -375,7 +375,6 @@
x:FieldModifier="public"
Style="{StaticResource CustomAutoSuggestBoxTextBoxStyle}"
PlaceholderText="Start typing"
Text="{Binding QueryText}"
Height="60"
ScrollViewer.BringIntoViewOnFocusChange="False"
Canvas.ZIndex="0"

68
src/modules/launcher/PowerLauncher/MainWindow.xaml.cs
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@ -22,6 +22,7 @@ using System.Threading.Tasks;
using Windows.UI.Xaml;
using Windows.UI.Core;
using System.Windows.Media;
using Windows.UI.Xaml.Data;
namespace PowerLauncher
{
@ -33,11 +34,10 @@ namespace PowerLauncher
private readonly Storyboard _progressBarStoryboard = new Storyboard();
private Settings _settings;
private MainViewModel _viewModel;
private bool _isTextSetProgramatically;
const int ROW_COUNT = 4;
const int ROW_HEIGHT = 75;
const int MAX_LIST_HEIGHT = 300;
#endregion
public MainWindow(Settings settings, MainViewModel mainVM)
@ -60,6 +60,7 @@ namespace PowerLauncher
private void OnInitialized(object sender, EventArgs e)
{
}
private void OnLoaded(object sender, System.Windows.RoutedEventArgs _)
@ -153,7 +154,7 @@ namespace PowerLauncher
_launcher = (PowerLauncher.UI.LauncherControl)host.Child;
_launcher.DataContext = _viewModel;
_launcher.KeyDown += _launcher_KeyDown;
_launcher.TextBox.TextChanged += QueryTextBox_TextChanged;
_launcher.TextBox.TextChanging += QueryTextBox_TextChanging;
_launcher.TextBox.Loaded += TextBox_Loaded;
_launcher.PropertyChanged += UserControl_PropertyChanged;
_viewModel.PropertyChanged += (o, e) =>
@ -177,9 +178,16 @@ namespace PowerLauncher
}
}
}
else if(e.PropertyName == nameof(MainViewModel.SystemQueryText))
{
this._isTextSetProgramatically = true;
_launcher.TextBox.Text = _viewModel.SystemQueryText;
}
};
}
private void UserControl_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "SolidBorderBrush")
@ -347,8 +355,36 @@ namespace PowerLauncher
return String.Empty;
}
private void QueryTextBox_TextChanging(TextBox sender, TextBoxTextChangingEventArgs args)
{
ClearAllQueryTextChangedHanlders();
if(this._isTextSetProgramatically)
{
this._launcher.TextBox.TextChanged += QueryTextBox_TextChangedProgramatically;
}
else
{
this._launcher.TextBox.TextChanged += QueryTextBox_TextChangedByUserInput;
}
}
private void QueryTextBox_TextChanged(object sender, Windows.UI.Xaml.Controls.TextChangedEventArgs e)
private void ClearAllQueryTextChangedHanlders()
{
this._launcher.TextBox.TextChanged -= QueryTextBox_TextChangedProgramatically;
this._launcher.TextBox.TextChanged -= QueryTextBox_TextChangedByUserInput;
}
private void QueryTextBox_TextChangedProgramatically(object sender, Windows.UI.Xaml.Controls.TextChangedEventArgs e)
{
var textBox = ((Windows.UI.Xaml.Controls.TextBox)sender);
textBox.SelectionStart = textBox.Text.Length;
this._isTextSetProgramatically = false;
}
private void QueryTextBox_TextChangedByUserInput(object sender, Windows.UI.Xaml.Controls.TextChangedEventArgs e)
{
var text = ((Windows.UI.Xaml.Controls.TextBox)sender).Text;
//To clear the auto-suggest immediately instead of waiting for selection changed
@ -357,19 +393,11 @@ namespace PowerLauncher
_launcher.AutoCompleteTextBox.PlaceholderText = String.Empty;
}
if (_viewModel.QueryTextUpdateBySystem)
{
_launcher.TextBox.SelectionStart = _launcher.TextBox.Text.Length;
_viewModel.QueryTextUpdateBySystem = false;
}
else
{
_viewModel.QueryText = text;
var latestTimeOfTyping = DateTime.Now;
_viewModel.QueryText = text;
var latestTimeOfTyping = DateTime.Now;
Task.Run(() => DelayedCheck(latestTimeOfTyping, text));
s_lastTimeOfTyping = latestTimeOfTyping;
}
Task.Run(() => DelayedCheck(latestTimeOfTyping, text));
s_lastTimeOfTyping = latestTimeOfTyping;
}
private async Task DelayedCheck(DateTime latestTimeOfTyping, string text)
@ -378,13 +406,13 @@ namespace PowerLauncher
if (latestTimeOfTyping.Equals(s_lastTimeOfTyping))
{
await System.Windows.Application.Current.Dispatcher.BeginInvoke(new Action(() =>
{
_viewModel.Query();
}));
{
_viewModel.Query();
}));
}
}
private void WindowsXamlHost_PreviewMouseDown(object sender, MouseButtonEventArgs e)
private void WindowsXamlHost_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
// if (sender != null && e.OriginalSource != null)
// {

9
src/modules/launcher/Wox/ViewModel/MainViewModel.cs
View File

@ -236,16 +236,15 @@ namespace Wox.ViewModel
/// <param name="requery">Optional Parameter that if true, will automatically execute a query against the updated text</param>
public void ChangeQueryText(string queryText, bool requery=false)
{
QueryTextUpdateBySystem = true;
QueryText = queryText;
SystemQueryText = queryText;
if(requery)
{
Query();
QueryText = queryText;
Query();
}
}
public bool LastQuerySelected { get; set; }
public bool QueryTextUpdateBySystem { get; set; }
private ResultsViewModel _selectedResults;
private ResultsViewModel SelectedResults