150 lines
4.8 KiB
C++
150 lines
4.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "FilePathStructCustomization.h"
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#include "DetailWidgetRow.h"
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#include "EditorDirectories.h"
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#include "HAL/Platform.h"
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#include "HAL/PlatformCrt.h"
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#include "HAL/PlatformMisc.h"
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#include "Internationalization/Internationalization.h"
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#include "Internationalization/Text.h"
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#include "Misc/Attribute.h"
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#include "Misc/MessageDialog.h"
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#include "Misc/PackageName.h"
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#include "Misc/Paths.h"
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#include "PropertyHandle.h"
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#include "Styling/AppStyle.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/Input/SFilePathPicker.h"
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#define LOCTEXT_NAMESPACE "FilePathStructCustomization"
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/* IDetailCustomization interface
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*****************************************************************************/
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void FFilePathStructCustomization::CustomizeChildren( TSharedRef<IPropertyHandle> StructPropertyHandle, class IDetailChildrenBuilder& StructBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils )
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{
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/* do nothing */
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}
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void FFilePathStructCustomization::CustomizeHeader( TSharedRef<IPropertyHandle> StructPropertyHandle, class FDetailWidgetRow& HeaderRow, IPropertyTypeCustomizationUtils& StructCustomizationUtils )
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{
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PathStringProperty = StructPropertyHandle->GetChildHandle("FilePath");
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FString FileTypeFilter;
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// construct file type filter
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const FString& MetaData = StructPropertyHandle->GetMetaData(TEXT("FilePathFilter"));
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bLongPackageName = StructPropertyHandle->HasMetaData(TEXT("LongPackageName"));
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bRelativeToGameDir = StructPropertyHandle->HasMetaData(TEXT("RelativeToGameDir"));
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if (MetaData.IsEmpty())
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{
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FileTypeFilter = TEXT("All files (*.*)|*.*");
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}
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else
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{
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if (MetaData.Contains(TEXT("|"))) // If MetaData follows the Description|ExtensionList format, use it as is
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{
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FileTypeFilter = MetaData;
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}
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else
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{
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FileTypeFilter = FString::Printf(TEXT("%s files (*.%s)|*.%s"), *MetaData, *MetaData, *MetaData);
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}
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}
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// create path picker widget
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HeaderRow
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.NameContent()
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[
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StructPropertyHandle->CreatePropertyNameWidget()
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]
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.ValueContent()
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.MaxDesiredWidth(0.0f)
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.MinDesiredWidth(125.0f)
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[
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SNew(SFilePathPicker)
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.BrowseButtonImage(FAppStyle::GetBrush("PropertyWindow.Button_Ellipsis"))
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.BrowseButtonStyle(FAppStyle::Get(), "HoverHintOnly")
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.BrowseButtonToolTip(LOCTEXT("FileButtonToolTipText", "Choose a file from this computer"))
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.BrowseDirectory(FEditorDirectories::Get().GetLastDirectory(ELastDirectory::GENERIC_OPEN))
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.BrowseTitle(LOCTEXT("PropertyEditorTitle", "File picker..."))
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.FilePath(this, &FFilePathStructCustomization::HandleFilePathPickerFilePath)
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.FileTypeFilter(FileTypeFilter)
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.OnPathPicked(this, &FFilePathStructCustomization::HandleFilePathPickerPathPicked)
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];
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}
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/* FFilePathStructCustomization callbacks
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*****************************************************************************/
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FString FFilePathStructCustomization::HandleFilePathPickerFilePath( ) const
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{
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FString FilePath;
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PathStringProperty->GetValue(FilePath);
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return FilePath;
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}
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void FFilePathStructCustomization::HandleFilePathPickerPathPicked( const FString& PickedPath )
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{
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FString FinalPath = PickedPath;
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if (bLongPackageName)
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{
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FString LongPackageName;
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FString StringFailureReason;
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if (FPackageName::TryConvertFilenameToLongPackageName(PickedPath, LongPackageName, &StringFailureReason) == false)
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{
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FMessageDialog::Open(EAppMsgType::Ok, FText::FromString(StringFailureReason));
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}
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FinalPath = LongPackageName;
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}
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else if (bRelativeToGameDir && !PickedPath.IsEmpty())
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{
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//A filepath under the project directory will be made relative to the project directory
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//Otherwise, the absolute path will be returned unless it doesn't exist, the current path will
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//be kept. This can happen if it's already relative to project dir (tabbing when selected)
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const FString ProjectDir = FPaths::ProjectDir();
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const FString AbsoluteProjectDir = FPaths::ConvertRelativePathToFull(ProjectDir);
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const FString AbsolutePickedPath = FPaths::ConvertRelativePathToFull(PickedPath);
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//Verify if absolute path to file exists. If it was already relative to content directory
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//the absolute will be to binaries and will possibly be garbage
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if (FPaths::FileExists(AbsolutePickedPath))
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{
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//If file is part of the project dir, chop the project dir part
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//Otherwise, use the absolute path
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if (AbsolutePickedPath.StartsWith(AbsoluteProjectDir))
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{
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FinalPath = AbsolutePickedPath.RightChop(AbsoluteProjectDir.Len());
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}
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else
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{
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FinalPath = AbsolutePickedPath;
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}
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}
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else
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{
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//If absolute file doesn't exist, it might already be relative to project dir
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//If not, then it might be a manual entry, so keep it untouched either way
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FinalPath = PickedPath;
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}
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}
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PathStringProperty->SetValue(FinalPath);
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FEditorDirectories::Get().SetLastDirectory(ELastDirectory::GENERIC_OPEN, FPaths::GetPath(PickedPath));
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}
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#undef LOCTEXT_NAMESPACE
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