CmdPal: Add drag & drop support (#44165)

## Summary of the Pull Request

This PR adds basic drag-and-drop support for items in list and grid
views.

It introduces two new properties on `ListItem`, backed by
`IExtendedAttributesProvider`: `DataPackage` and `DataPackageView`.
These properties are mutually exclusive.
`DataPackage` serves as a convenience property allowing the item to
retain the underlying object without risk of losing it. Across the
extension boundary, only the immutable `DataPackageView` snapshot is
transferred. When `DataPackage` is set, `DataPackageView` is derived
from it.

This PR includes initial concrete drag-and-drop implementations for:
- File Indexer  
- Clipboard History  

**Todo / Missing pieces** 
- [x] Extend `DataPackage` support to top-level command items, enabling
scenarios such as index fallback ~
- [x] Provide automatic drag-and-drop for unconfigured list items (e.g.,
copying title and subtitle as text)
- [x] Keep CmdPal open
- [ ] ~Clipboard commands (since we have the DataPackage...)~
- [ ] ~Improve logging~

## Pictures? Moving ones!


https://github.com/user-attachments/assets/13eb9a71-e760-43ea-8c2d-cd41cf377905




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## PR Checklist

- [x] Closes: #38289 
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
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installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
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pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
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- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

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wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
This commit is contained in:
Jiří Polášek
2025-12-11 15:05:48 +01:00
committed by GitHub
parent 4de4d5f310
commit 73786cd2be
19 changed files with 611 additions and 11 deletions

View File

@@ -12,6 +12,8 @@ using Microsoft.CmdPal.Ext.ClipboardHistory.Helpers;
using Microsoft.CmdPal.Ext.ClipboardHistory.Helpers.Analyzers;
using Microsoft.CommandPalette.Extensions;
using Microsoft.CommandPalette.Extensions.Toolkit;
using Windows.ApplicationModel.DataTransfer;
using WinRT;
namespace Microsoft.CmdPal.Ext.ClipboardHistory.Models;
@@ -62,6 +64,8 @@ internal sealed partial class ClipboardListItem : ListItem
RequestedShortcut = KeyChords.DeleteEntry,
};
DataPackageView = _item.Item.Content;
if (item.IsImage)
{
Title = "Image";

View File

@@ -2,14 +2,17 @@
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Microsoft.CmdPal.Core.Common.Commands;
using Microsoft.CmdPal.Ext.Indexer.Helpers;
using Microsoft.CmdPal.Ext.Indexer.Pages;
using Microsoft.CmdPal.Ext.Indexer.Properties;
using Microsoft.CommandPalette.Extensions.Toolkit;
using Windows.Foundation.Metadata;
using FileAttributes = System.IO.FileAttributes;
namespace Microsoft.CmdPal.Ext.Indexer.Data;
@@ -36,6 +39,8 @@ internal sealed partial class IndexerListItem : ListItem
Title = indexerItem.FileName;
Subtitle = indexerItem.FullPath;
DataPackage = DataPackageHelper.CreateDataPackageForPath(this, FilePath);
var commands = FileCommands(indexerItem.FullPath, browseByDefault);
if (commands.Any())
{

View File

@@ -7,6 +7,7 @@ using System.Globalization;
using System.IO;
using System.Text;
using Microsoft.CmdPal.Ext.Indexer.Data;
using Microsoft.CmdPal.Ext.Indexer.Helpers;
using Microsoft.CmdPal.Ext.Indexer.Properties;
using Microsoft.CommandPalette.Extensions.Toolkit;
using Windows.Storage.Streams;
@@ -42,6 +43,7 @@ internal sealed partial class FallbackOpenFileItem : FallbackCommandItem, System
Subtitle = string.Empty;
Icon = null;
MoreCommands = null;
DataPackage = null;
return;
}
@@ -53,6 +55,7 @@ internal sealed partial class FallbackOpenFileItem : FallbackCommandItem, System
Subtitle = string.Empty;
Icon = null;
MoreCommands = null;
DataPackage = null;
return;
}
@@ -67,6 +70,7 @@ internal sealed partial class FallbackOpenFileItem : FallbackCommandItem, System
Subtitle = item.FileName;
Title = item.FullPath;
Icon = listItemForUs.Icon;
DataPackage = DataPackageHelper.CreateDataPackageForPath(listItemForUs, item.FullPath);
try
{
@@ -92,13 +96,15 @@ internal sealed partial class FallbackOpenFileItem : FallbackCommandItem, System
_searchEngine.Query(query, _queryCookie);
var results = _searchEngine.FetchItems(0, 20, _queryCookie, out var _);
if (results.Count == 0 || ((results[0] as IndexerListItem) is null))
if (results.Count == 0 || (results[0] is not IndexerListItem indexerListItem))
{
// Exit 2: We searched for the file, and found nothing. Oh well.
// Hide ourselves.
Title = string.Empty;
Subtitle = string.Empty;
Command = new NoOpCommand();
MoreCommands = null;
DataPackage = null;
return;
}
@@ -106,11 +112,12 @@ internal sealed partial class FallbackOpenFileItem : FallbackCommandItem, System
{
// Exit 3: We searched for the file, and found exactly one thing. Awesome!
// Return it.
Title = results[0].Title;
Subtitle = results[0].Subtitle;
Icon = results[0].Icon;
Command = results[0].Command;
MoreCommands = results[0].MoreCommands;
Title = indexerListItem.Title;
Subtitle = indexerListItem.Subtitle;
Icon = indexerListItem.Icon;
Command = indexerListItem.Command;
MoreCommands = indexerListItem.MoreCommands;
DataPackage = DataPackageHelper.CreateDataPackageForPath(indexerListItem, indexerListItem.FilePath);
return;
}
@@ -121,6 +128,8 @@ internal sealed partial class FallbackOpenFileItem : FallbackCommandItem, System
Title = string.Format(CultureInfo.CurrentCulture, fallbackItemSearchPageTitleCompositeFormat, query);
Icon = Icons.FileExplorerIcon;
Command = indexerPage;
MoreCommands = null;
DataPackage = null;
return;
}
@@ -131,6 +140,7 @@ internal sealed partial class FallbackOpenFileItem : FallbackCommandItem, System
Icon = null;
Command = new NoOpCommand();
MoreCommands = null;
DataPackage = null;
}
}
}

View File

@@ -0,0 +1,64 @@
// Copyright (c) Microsoft Corporation
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.CommandPalette.Extensions;
using Windows.ApplicationModel.DataTransfer;
using Windows.Storage;
using File = System.IO.File;
namespace Microsoft.CmdPal.Ext.Indexer.Helpers;
internal static class DataPackageHelper
{
public static DataPackage CreateDataPackageForPath(ICommandItem listItem, string path)
{
if (string.IsNullOrEmpty(path))
{
return null;
}
var dataPackage = new DataPackage();
dataPackage.SetText(path);
_ = dataPackage.TrySetStorageItemsAsync(path);
dataPackage.Properties.Title = listItem.Title;
dataPackage.Properties.Description = listItem.Subtitle;
dataPackage.RequestedOperation = DataPackageOperation.Copy;
return dataPackage;
}
public static async Task<bool> TrySetStorageItemsAsync(this DataPackage dataPackage, string filePath)
{
try
{
if (File.Exists(filePath))
{
var file = await StorageFile.GetFileFromPathAsync(filePath);
dataPackage.SetStorageItems([file]);
return true;
}
if (Directory.Exists(filePath))
{
var folder = await StorageFolder.GetFolderFromPathAsync(filePath);
dataPackage.SetStorageItems([folder]);
return true;
}
// nothing there
return false;
}
catch (UnauthorizedAccessException)
{
// Access denied skip or report, but don't crash
return false;
}
catch (Exception)
{
return false;
}
}
}

View File

@@ -5,6 +5,7 @@
using System.Collections.Generic;
using Microsoft.CmdPal.Core.Common.Commands;
using Microsoft.CmdPal.Ext.Indexer.Data;
using Microsoft.CmdPal.Ext.Indexer.Helpers;
using Microsoft.CmdPal.Ext.Indexer.Properties;
using Microsoft.CommandPalette.Extensions.Toolkit;
using Windows.Foundation;
@@ -28,6 +29,9 @@ internal sealed partial class ExploreListItem : ListItem
Title = indexerItem.FileName;
Subtitle = indexerItem.FullPath;
DataPackage = DataPackageHelper.CreateDataPackageForPath(this, FilePath);
List<CommandContextItem> context = [];
if (indexerItem.IsDirectory())
{

View File

@@ -0,0 +1,254 @@
// Copyright (c) Microsoft Corporation
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Globalization;
using Microsoft.CommandPalette.Extensions;
using Microsoft.CommandPalette.Extensions.Toolkit;
using Windows.ApplicationModel.DataTransfer;
using Windows.Storage.Streams;
namespace SamplePagesExtension;
internal sealed partial class SampleDataTransferPage : ListPage
{
private readonly IListItem[] _items;
public SampleDataTransferPage()
{
var dataPackageWithText = CreateDataPackageWithText();
var dataPackageWithDelayedText = CreateDataPackageWithDelayedText();
var dataPackageWithImage = CreateDataPackageWithImage();
_items =
[
new ListItem(new NoOpCommand())
{
Title = "Draggable item with a plain text",
Subtitle = "A sample page demonstrating how to drag and drop data",
DataPackage = dataPackageWithText,
},
new ListItem(new NoOpCommand())
{
Title = "Draggable item with a lazily rendered plain text",
Subtitle = "A sample page demonstrating how to drag and drop data with delayed rendering",
DataPackage = dataPackageWithDelayedText,
},
new ListItem(new NoOpCommand())
{
Title = "Draggable item with an image",
Subtitle = "This item has an image - package contains both file and a bitmap",
Icon = IconHelpers.FromRelativePath("Assets/Images/Swirls.png"),
DataPackage = dataPackageWithImage,
},
new ListItem(new SampleDataTransferOnGridPage())
{
Title = "Drag & drop grid",
Subtitle = "A sample page demonstrating a grid list of items",
Icon = new IconInfo("\uF0E2"),
}
];
}
private static DataPackage CreateDataPackageWithText()
{
var dataPackageWithText = new DataPackage
{
Properties =
{
Title = "Item with data package with text",
Description = "This item has associated text with it",
},
RequestedOperation = DataPackageOperation.Copy,
};
dataPackageWithText.SetText("Text data in the Data Package");
return dataPackageWithText;
}
private static DataPackage CreateDataPackageWithDelayedText()
{
var dataPackageWithDelayedText = new DataPackage
{
Properties =
{
Title = "Item with delayed render data in the data package",
Description = "This items has an item associated with it that is evaluated when requested for the first time",
},
RequestedOperation = DataPackageOperation.Copy,
};
dataPackageWithDelayedText.SetDataProvider(StandardDataFormats.Text, request =>
{
var d = request.GetDeferral();
try
{
request.SetData(DateTime.Now.ToString("G", CultureInfo.CurrentCulture));
}
finally
{
d.Complete();
}
});
return dataPackageWithDelayedText;
}
private static DataPackage CreateDataPackageWithImage()
{
var dataPackageWithImage = new DataPackage
{
Properties =
{
Title = "Item with delayed render image in the data package",
Description = "This items has an image associated with it that is evaluated when requested for the first time",
},
RequestedOperation = DataPackageOperation.Copy,
};
dataPackageWithImage.SetDataProvider(StandardDataFormats.Bitmap, async void (request) =>
{
var deferral = request.GetDeferral();
try
{
var file = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/Images/Swirls.png"));
var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
var streamRef = RandomAccessStreamReference.CreateFromStream(stream);
request.SetData(streamRef);
}
finally
{
deferral.Complete();
}
});
dataPackageWithImage.SetDataProvider(StandardDataFormats.StorageItems, async void (request) =>
{
var deferral = request.GetDeferral();
try
{
var file = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/Images/Swirls.png"));
var items = new[] { file };
request.SetData(items);
}
finally
{
deferral.Complete();
}
});
return dataPackageWithImage;
}
public override IListItem[] GetItems() => _items;
}
[System.Diagnostics.CodeAnalysis.SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:File may only contain a single type", Justification = "Samples")]
internal sealed partial class SampleDataTransferOnGridPage : ListPage
{
public SampleDataTransferOnGridPage()
{
GridProperties = new GalleryGridLayout
{
ShowTitle = true,
ShowSubtitle = true,
};
}
public override IListItem[] GetItems()
{
return [
new ListItem(new NoOpCommand())
{
Title = "Red Rectangle",
Subtitle = "Drag me",
Icon = IconHelpers.FromRelativePath("Assets/Images/RedRectangle.png"),
DataPackage = CreateDataPackageForImage("Assets/Images/RedRectangle.png"),
},
new ListItem(new NoOpCommand())
{
Title = "Swirls",
Subtitle = "Drop me",
Icon = IconHelpers.FromRelativePath("Assets/Images/Swirls.png"),
DataPackage = CreateDataPackageForImage("Assets/Images/Swirls.png"),
},
new ListItem(new NoOpCommand())
{
Title = "Windows Digital",
Subtitle = "Drag me",
Icon = IconHelpers.FromRelativePath("Assets/Images/Win-Digital.png"),
DataPackage = CreateDataPackageForImage("Assets/Images/Win-Digital.png"),
},
new ListItem(new NoOpCommand())
{
Title = "Red Rectangle",
Subtitle = "Drop me",
Icon = IconHelpers.FromRelativePath("Assets/Images/RedRectangle.png"),
DataPackage = CreateDataPackageForImage("Assets/Images/RedRectangle.png"),
},
new ListItem(new NoOpCommand())
{
Title = "Space",
Subtitle = "Drag me",
Icon = IconHelpers.FromRelativePath("Assets/Images/Space.png"),
DataPackage = CreateDataPackageForImage("Assets/Images/Space.png"),
},
new ListItem(new NoOpCommand())
{
Title = "Swirls",
Subtitle = "Drop me",
Icon = IconHelpers.FromRelativePath("Assets/Images/Swirls.png"),
DataPackage = CreateDataPackageForImage("Assets/Images/Swirls.png"),
},
new ListItem(new NoOpCommand())
{
Title = "Windows Digital",
Subtitle = "Drag me",
Icon = IconHelpers.FromRelativePath("Assets/Images/Win-Digital.png"),
DataPackage = CreateDataPackageForImage("Assets/Images/Win-Digital.png"),
},
];
}
private static DataPackage CreateDataPackageForImage(string relativePath)
{
var dataPackageWithImage = new DataPackage
{
Properties =
{
Title = "Image",
Description = "This item has an image associated with it.",
},
RequestedOperation = DataPackageOperation.Copy,
};
var imageUri = new Uri($"ms-appx:///{relativePath}");
dataPackageWithImage.SetDataProvider(StandardDataFormats.Bitmap, async (request) =>
{
var deferral = request.GetDeferral();
try
{
var file = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(imageUri);
var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
var streamRef = RandomAccessStreamReference.CreateFromStream(stream);
request.SetData(streamRef);
}
finally
{
deferral.Complete();
}
});
dataPackageWithImage.SetDataProvider(StandardDataFormats.StorageItems, async (request) =>
{
var deferral = request.GetDeferral();
try
{
var file = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(imageUri);
var items = new[] { file };
request.SetData(items);
}
finally
{
deferral.Complete();
}
});
return dataPackageWithImage;
}
}

View File

@@ -106,6 +106,13 @@ public partial class SamplesListPage : ListPage
Subtitle = "A demo of the settings helpers",
},
// Data package samples
new ListItem(new SampleDataTransferPage())
{
Title = "Clipboard and Drag-and-Drop Demo",
Subtitle = "Demonstrates clipboard integration and drag-and-drop functionality",
},
// Evil edge cases
// Anything weird that might break the palette - put that in here.
new ListItem(new EvilSamplesPage())