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Use the explorer window with the lowest z-index to allow active explorer path be a built-in shortcut

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Hongtao Zhang 2023-01-03 23:05:35 -05:00
parent f78c212c5e
commit 55dee4f471
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GPG key ID: 75F655B91C7AC9BB
4 changed files with 94 additions and 62 deletions
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89
Flow.Launcher.Infrastructure/FileExplorerHelper.cs Normal file
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@ -0,0 +1,89 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
namespace Flow.Launcher.Infrastructure
{
public static class FileExplorerHelper
{
/// <summary>
/// Gets the path of the file explorer that is currently in the foreground
/// </summary>
public static string GetActiveExplorerPath()
{
var explorerWindow = GetActiveExplorer();
string locationUrl = explorerWindow?.LocationURL;
return !string.IsNullOrEmpty(locationUrl) ? new Uri(locationUrl).LocalPath : null;
}
/// <summary>
/// Gets the file explorer that is currently in the foreground
/// </summary>
private static dynamic GetActiveExplorer()
{
Type type = Type.GetTypeFromProgID("Shell.Application");
if (type == null) return null;
dynamic shell = Activator.CreateInstance(type);
if (shell == null)
{
return null;
}
var explorerWindows = new List<dynamic>();
var openWindows = shell.Windows();
for (int i = 0; i < openWindows.Count; i++)
{
var window = openWindows.Item(i);
if (window == null) continue;
// find the desired window and make sure that it is indeed a file explorer
// we don't want the Internet Explorer or the classic control panel
// ToLower() is needed, because Windows can report the path as "C:\\Windows\\Explorer.EXE"
if (Path.GetFileName((string)window.FullName)?.ToLower() == "explorer.exe")
{
explorerWindows.Add(window);
}
}
if (explorerWindows.Count == 0) return null;
var zOrders = GetZOrder(explorerWindows);
return explorerWindows.Zip(zOrders).MinBy(x => x.Second).First;
}
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool EnumWindows(EnumWindowsProc lpEnumFunc, IntPtr lParam);
private delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
/// <summary>
/// Gets the z-order for one or more windows atomically with respect to each other. In Windows, smaller z-order is higher. If the window is not top level, the z order is returned as -1.
/// </summary>
private static IEnumerable<int> GetZOrder(List<dynamic> hWnds)
{
var z = new int[hWnds.Count];
for (var i = 0; i < hWnds.Count; i++) z[i] = -1;
var index = 0;
var numRemaining = hWnds.Count;
EnumWindows((wnd, _) =>
{
var searchIndex = hWnds.FindIndex(x => x.HWND == wnd.ToInt32());
if (searchIndex != -1)
{
z[searchIndex] = index;
numRemaining--;
if (numRemaining == 0) return false;
}
index++;
return true;
}, IntPtr.Zero);
return z;
}
}
}

6
Flow.Launcher.Infrastructure/UserSettings/Settings.cs
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@ -192,8 +192,10 @@ namespace Flow.Launcher.Infrastructure.UserSettings
public ObservableCollection<CustomShortcutModel> CustomShortcuts { get; set; } = new ObservableCollection<CustomShortcutModel>();
[JsonIgnore]
public ObservableCollection<BuiltinShortcutModel> BuiltinShortcuts { get; set; } = new ObservableCollection<BuiltinShortcutModel>() {
new BuiltinShortcutModel("{clipboard}", "shortcut_clipboard_description", Clipboard.GetText)
public ObservableCollection<BuiltinShortcutModel> BuiltinShortcuts { get; set; } = new()
{
new BuiltinShortcutModel("{clipboard}", "shortcut_clipboard_description", Clipboard.GetText),
new BuiltinShortcutModel("{active_explorer_path}", "shortcut_active_explorer_path", FileExplorerHelper.GetActiveExplorerPath)
};
public bool DontPromptUpdateMsg { get; set; }

60
Flow.Launcher/Helper/FileExplorerHelper.cs
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@ -1,60 +0,0 @@
using System;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
namespace Flow.Launcher.Helper
{
public class FileExplorerHelper
{
/// <summary>
/// Gets the path of the file explorer that is currently in the foreground
/// </summary>
public static string GetActiveExplorerPath()
{
var explorerWindow = GetActiveExplorer();
string locationUrl = explorerWindow?.LocationURL;
if (!string.IsNullOrEmpty(locationUrl))
{
return new Uri(locationUrl).LocalPath;
}
else
{
return null;
}
}
/// <summary>
/// Gets the file explorer that is currently in the foreground
/// </summary>
private static dynamic GetActiveExplorer()
{
// get the active window
IntPtr handle = GetForegroundWindow();
Type type = Type.GetTypeFromProgID("Shell.Application");
if (type == null) return null;
dynamic shell = Activator.CreateInstance(type);
var openWindows = shell.Windows();
for (int i = 0; i < openWindows.Count; i++)
{
var window = openWindows.Item(i);
if (window == null) continue;
// find the desired window and make sure that it is indeed a file explorer
// we don't want the Internet Explorer or the classic control panel
// ToLower() is needed, because Windows can report the path as "C:\\Windows\\Explorer.EXE"
if (Path.GetFileName((string)window.FullName).ToLower() == "explorer.exe" && new IntPtr(window.HWND) == handle)
{
return window;
}
}
return null;
}
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
}
}

1
Flow.Launcher/Languages/en.xaml
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@ -176,6 +176,7 @@
<system:String x:Key="deleteCustomHotkeyWarning">Are you sure you want to delete {0} plugin hotkey?</system:String>
<system:String x:Key="deleteCustomShortcutWarning">Are you sure you want to delete shortcut: {0} with expansion {1}?</system:String>
<system:String x:Key="shortcut_clipboard_description">Get text from clipboard.</system:String>
<system:String x:Key="shortcut_active_explorer_path">Get path from active explorer.</system:String>
<system:String x:Key="queryWindowShadowEffect">Query window shadow effect</system:String>
<system:String x:Key="shadowEffectCPUUsage">Shadow effect has a substantial usage of GPU. Not recommended if your computer performance is limited.</system:String>
<system:String x:Key="windowWidthSize">Window Width Size</system:String>