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f86325bfa767a544c54646fd230c855e88aba7f7
UnrealEngineUWP/Engine/Source/Editor/IntroTutorials/Private/STutorialsBrowser.cpp
Ben Marsh f86325bfa7 Merging //UE4/Release-4.17 @ CL 3528061 to Release-Staging-4.17 (//UE4/Release-Staging-4.17) 
#rb none
#jira UE-123

[CL 3535468 by Ben Marsh in Staging-4.17 branch]
2017-07-13 10:13:07 -04:00

1092 lines
33 KiB
C++
Raw Blame History

// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
#include "STutorialsBrowser.h"
#include "Brushes/SlateDynamicImageBrush.h"
#include "Widgets/SOverlay.h"
#include "Widgets/Images/SImage.h"
#include "Widgets/Notifications/SProgressBar.h"
#include "Widgets/Text/STextBlock.h"
#include "Widgets/Input/SButton.h"
#include "Widgets/Views/SListView.h"
#include "EditorStyleSet.h"
#include "Engine/Blueprint.h"
#include "Engine/Texture2D.h"
#include "AssetData.h"
#include "IntroTutorials.h"
#include "EditorTutorial.h"
#include "STutorialContent.h"
#include "TutorialSettings.h"
#include "EditorTutorialSettings.h"
#include "TutorialStateSettings.h"
#include "ARFilter.h"
#include "AssetRegistryModule.h"
#include "EngineAnalytics.h"
#include "AnalyticsEventAttribute.h"
#include "Interfaces/IAnalyticsProvider.h"
#include "Widgets/Input/SSearchBox.h"
#include "Widgets/Navigation/SBreadcrumbTrail.h"
#include "GCObject.h"
#define LOCTEXT_NAMESPACE "TutorialsBrowser"
class FTutorialListEntry_Tutorial;
DECLARE_DELEGATE_OneParam(FOnCategorySelected, const FString& /* InCategory */);
namespace TutorialBrowserConstants
{
const float RefreshTimerInterval = 1.0f;
const float ProgressUpdateInterval = 0.5f;
}
class FTutorialListEntry_Category : public ITutorialListEntry, public TSharedFromThis<FTutorialListEntry_Category>
{
public:
FTutorialListEntry_Category(FOnCategorySelected InOnCategorySelected)
: OnCategorySelected(InOnCategorySelected)
, SlateBrush(nullptr)
{}
FTutorialListEntry_Category(const FTutorialCategory& InCategory, FOnCategorySelected InOnCategorySelected, const TAttribute<FText>& InHighlightText)
: Category(InCategory)
, OnCategorySelected(InOnCategorySelected)
, HighlightText(InHighlightText)
, SlateBrush(nullptr)
{
if(!Category.Identifier.IsEmpty())
{
int32 Index = INDEX_NONE;
if(Category.Identifier.FindLastChar(TEXT('.'), Index))
{
CategoryName = Category.Identifier.RightChop(Index + 1);
}
else
{
CategoryName = Category.Identifier;
}
}
if(Category.Texture.IsValid())
{
UTexture2D* Texture = LoadObject<UTexture2D>(nullptr, *Category.Texture.ToString());
if(Texture != nullptr)
{
FIntPoint TextureSize = Texture->GetImportedSize();
DynamicBrush = MakeShareable(new FSlateDynamicImageBrush(Texture, FVector2D((float)TextureSize.X, (float)TextureSize.Y), NAME_None));
SlateBrush = DynamicBrush.Get();
}
}
if(SlateBrush == nullptr)
{
if(Category.Icon.Len() > 0)
{
SlateBrush = FEditorStyle::Get().GetBrush(FName(*Category.Icon));
}
}
if(SlateBrush == nullptr)
{
SlateBrush = FEditorStyle::Get().GetBrush("Tutorials.Browser.DefaultTutorialIcon");
}
}
virtual ~FTutorialListEntry_Category()
{
if( DynamicBrush.IsValid() )
{
DynamicBrush->ReleaseResource();
}
}
virtual TSharedRef<ITableRow> OnGenerateTutorialRow(const TSharedRef<STableViewBase>& OwnerTable) const override
{
return SNew(STableRow<TSharedPtr<ITutorialListEntry>>, OwnerTable)
[
SNew(SBox)
.Padding(FMargin(0.0f, 2.0f))
[
SNew(SButton)
.OnClicked(this, &FTutorialListEntry_Category::OnClicked)
.ButtonStyle(&FEditorStyle::Get().GetWidgetStyle<FButtonStyle>("Tutorials.Browser.Button"))
.ForegroundColor(FSlateColor::UseForeground())
.Content()
[
SNew(SHorizontalBox)
+SHorizontalBox::Slot()
.AutoWidth()
.VAlign(VAlign_Center)
.HAlign(HAlign_Center)
.Padding(8.0f)
[
SNew(SOverlay)
+ SOverlay::Slot()
[
SNew(SBox)
.WidthOverride(64.0f)
.HeightOverride(64.0f)
.VAlign(VAlign_Center)
.HAlign(HAlign_Center)
[
SNew(SImage)
.Image(SlateBrush)
]
]
+ SOverlay::Slot()
.VAlign(VAlign_Bottom)
.HAlign(HAlign_Right)
[
SNew(SImage)
.ToolTipText(LOCTEXT("CompletedCategoryCheckToolTip", "This category has been completed"))
.Visibility(this, &FTutorialListEntry_Category::GetCompletedVisibility)
.Image(FEditorStyle::Get().GetBrush("Tutorials.Browser.Completed"))
]
]
+ SHorizontalBox::Slot()
.FillWidth(1.0f)
.VAlign(VAlign_Center)
[
SNew(SVerticalBox)
+SVerticalBox::Slot()
.AutoHeight()
[
SNew(STextBlock)
.Text(GetTitleText())
.TextStyle(&FEditorStyle::Get().GetWidgetStyle<FTextBlockStyle>("Tutorials.Browser.SummaryHeader"))
.HighlightText(HighlightText)
.HighlightColor(FEditorStyle::Get().GetColor("Tutorials.Browser.HighlightTextColor"))
.HighlightShape(FEditorStyle::Get().GetBrush("TextBlock.HighlightShape"))
]
+SVerticalBox::Slot()
.FillHeight(1.0f)
[
SNew(STextBlock)
.AutoWrapText(true)
.Text(Category.Description)
.TextStyle(&FEditorStyle::Get().GetWidgetStyle<FTextBlockStyle>("Tutorials.Browser.SummaryText"))
.HighlightText(HighlightText)
.HighlightColor(FEditorStyle::Get().GetColor("Tutorials.Browser.HighlightTextColor"))
.HighlightShape(FEditorStyle::Get().GetBrush("TextBlock.HighlightShape"))
]
]
+SHorizontalBox::Slot()
.AutoWidth()
.HAlign(HAlign_Right)
.VAlign(VAlign_Center)
[
SNew(SImage)
.Visibility(this, &FTutorialListEntry_Category::OnGetArrowVisibility)
.Image(FEditorStyle::Get().GetBrush("Tutorials.Browser.CategoryArrow"))
]
]
]
];
}
bool PassesFilter(const FString& InCategoryFilter, const FString& InFilter) const override
{
const FString Title = !Category.Title.IsEmpty() ? Category.Title.ToString() : CategoryName;
const bool bPassesFilter = InFilter.IsEmpty() || (Title.Contains(InFilter) || Category.Description.ToString().Contains(InFilter));
const bool bPassesCategory = InCategoryFilter.IsEmpty() || Category.Identifier.StartsWith(InCategoryFilter);
return bPassesFilter && bPassesCategory;
}
int32 GetSortOrder() const override
{
return Category.SortOrder;
}
FText GetTitleText() const override
{
return !Category.Title.IsEmpty() ? Category.Title : FText::FromString(CategoryName);
}
bool SortAgainst(TSharedRef<ITutorialListEntry> OtherEntry) const override
{
return (GetSortOrder() == OtherEntry->GetSortOrder()) ? (GetTitleText().CompareTo(OtherEntry->GetTitleText()) < 0) : (GetSortOrder() < OtherEntry->GetSortOrder());
}
void AddSubCategory(TSharedPtr<FTutorialListEntry_Category> InSubCategory)
{
SubCategories.Add(InSubCategory);
}
void AddTutorial(TSharedPtr<FTutorialListEntry_Tutorial> InTutorial);
FReply OnClicked() const
{
if(SubCategories.Num() > 0 || Tutorials.Num() > 0)
{
OnCategorySelected.ExecuteIfBound(Category.Identifier);
}
return FReply::Handled();
}
EVisibility OnGetArrowVisibility() const
{
return (SubCategories.Num() > 0 || Tutorials.Num() > 0) ? EVisibility::Visible : EVisibility::Collapsed;
}
EVisibility GetCompletedVisibility() const override
{
for (int32 i = 0; i < Tutorials.Num(); ++i)
{
if (Tutorials[i].IsValid() && (Tutorials[i]->GetCompletedVisibility() != EVisibility::Visible))
{
return EVisibility::Hidden;
}
}
for (int32 i = 0; i < SubCategories.Num(); ++i)
{
if (SubCategories[i].IsValid() && (SubCategories[i]->GetCompletedVisibility() != EVisibility::Visible))
{
return EVisibility::Hidden;
}
}
return EVisibility::Visible;
}
public:
/** Copy of the category info */
FTutorialCategory Category;
/** Parent category */
TWeakPtr<ITutorialListEntry> ParentCategory;
/** Sub-categories */
TArray<TSharedPtr<ITutorialListEntry>> SubCategories;
/** Tutorials in this category */
TArray<TSharedPtr<ITutorialListEntry>> Tutorials;
/** Selection delegate */
FOnCategorySelected OnCategorySelected;
/** Name of the category, empty if this category is at the root */
FString CategoryName;
/** Text to highlight */
TAttribute<FText> HighlightText;
/** Static brush from the editor style */
const FSlateBrush* SlateBrush;
/** Dynamic brush from the texture specified by the user */
TSharedPtr<FSlateDynamicImageBrush> DynamicBrush;
};
DECLARE_DELEGATE_TwoParams(FOnTutorialSelected, UEditorTutorial* /* InTutorial */, bool /* bRestart */ );
class FTutorialListEntry_Tutorial : public ITutorialListEntry, public TSharedFromThis<FTutorialListEntry_Tutorial>, public FGCObject
{
public:
FTutorialListEntry_Tutorial(UEditorTutorial* InTutorial, FOnTutorialSelected InOnTutorialSelected, const TAttribute<FText>& InHighlightText)
: Tutorial(InTutorial)
, OnTutorialSelected(InOnTutorialSelected)
, HighlightText(InHighlightText)
, SlateBrush(nullptr)
, LastUpdateTime(0.0f)
{
if(Tutorial->Texture != nullptr)
{
FIntPoint TextureSize = Tutorial->Texture->GetImportedSize();
DynamicBrush = MakeShareable(new FSlateDynamicImageBrush(Tutorial->Texture, FVector2D((float)TextureSize.X, (float)TextureSize.Y), NAME_None));
SlateBrush = DynamicBrush.Get();
}
else if(Tutorial->Icon.Len() > 0)
{
SlateBrush = FEditorStyle::Get().GetBrush(FName(*Tutorial->Icon));
}
if(SlateBrush == nullptr)
{
SlateBrush = FEditorStyle::Get().GetBrush("Tutorials.Browser.DefaultTutorialIcon");
}
}
virtual ~FTutorialListEntry_Tutorial()
{
if( DynamicBrush.IsValid() )
{
DynamicBrush->ReleaseResource();
}
}
virtual TSharedRef<ITableRow> OnGenerateTutorialRow(const TSharedRef<STableViewBase>& OwnerTable) const override
{
CacheProgress();
return SNew(STableRow<TSharedPtr<ITutorialListEntry>>, OwnerTable)
[
SNew(SBox)
.Padding(FMargin(0.0f, 2.0f))
[
SAssignNew(LaunchButton, SButton)
.OnClicked(this, &FTutorialListEntry_Tutorial::OnClicked, false)
.ButtonStyle(&FEditorStyle::Get().GetWidgetStyle<FButtonStyle>("Tutorials.Browser.Button"))
.ForegroundColor(FSlateColor::UseForeground())
.Content()
[
SNew(SVerticalBox)
+SVerticalBox::Slot()
.AutoHeight()
[
SNew(SHorizontalBox)
+SHorizontalBox::Slot()
.AutoWidth()
.VAlign(VAlign_Center)
.HAlign(HAlign_Center)
.Padding(8.0f)
[
SNew(SOverlay)
+SOverlay::Slot()
[
SNew(SBox)
.WidthOverride(64.0f)
.HeightOverride(64.0f)
.VAlign(VAlign_Center)
.HAlign(HAlign_Center)
[
SNew(SImage)
.Image(SlateBrush)
]
]
+SOverlay::Slot()
.VAlign(VAlign_Bottom)
.HAlign(HAlign_Right)
[
SNew(SImage)
.ToolTipText(LOCTEXT("CompletedTutorialCheckToolTip", "This tutorial has been completed"))
.Visibility(this, &FTutorialListEntry_Tutorial::GetCompletedVisibility)
.Image(FEditorStyle::Get().GetBrush("Tutorials.Browser.Completed"))
]
]
+SHorizontalBox::Slot()
.FillWidth(1.0f)
.HAlign(HAlign_Fill)
.VAlign(VAlign_Center)
[
SNew(SVerticalBox)
+SVerticalBox::Slot()
.AutoHeight()
[
SNew(SHorizontalBox)
+SHorizontalBox::Slot()
.FillWidth(1.0f)
[
SNew(STextBlock)
.Text(GetTitleText())
.TextStyle(&FEditorStyle::Get().GetWidgetStyle<FTextBlockStyle>("Tutorials.Browser.SummaryHeader"))
.HighlightText(HighlightText)
.HighlightColor(FEditorStyle::Get().GetColor("Tutorials.Browser.HighlightTextColor"))
.HighlightShape(FEditorStyle::Get().GetBrush("TextBlock.HighlightShape"))
]
+SHorizontalBox::Slot()
.AutoWidth()
.VAlign(VAlign_Center)
[
SNew(SButton)
.ToolTipText(LOCTEXT("RestartButtonToolTip", "Start this tutorial from the beginning"))
.Visibility(this, &FTutorialListEntry_Tutorial::GetRestartVisibility)
.OnClicked(this, &FTutorialListEntry_Tutorial::OnClicked, true)
.ButtonStyle(&FEditorStyle::Get().GetWidgetStyle<FButtonStyle>("Tutorials.Browser.Button"))
.Content()
[
SNew(SImage)
.Image(FEditorStyle::GetBrush("Tutorials.Browser.RestartButton"))
]
]
]
+SVerticalBox::Slot()
.AutoHeight()
[
SNew(SBox)
.Visibility(this, &FTutorialListEntry_Tutorial::GetProgressVisibility)
.HeightOverride(3.0f)
[
SNew(SProgressBar)
.Percent(this, &FTutorialListEntry_Tutorial::GetProgress)
]
]
+SVerticalBox::Slot()
.FillHeight(1.0f)
[
STutorialContent::GenerateContentWidget(Tutorial->SummaryContent, DocumentationPage, HighlightText)
]
]
]
]
]
];
}
bool PassesFilter(const FString& InCategoryFilter, const FString& InFilter) const override
{
const bool bPassesFilter = InFilter.IsEmpty() || (Tutorial->Title.ToString().Contains(InFilter) || Tutorial->SummaryContent.Text.ToString().Contains(InFilter));
const bool bPassesCategory = InCategoryFilter.IsEmpty() || Tutorial->Category.StartsWith(InCategoryFilter);
return bPassesFilter && bPassesCategory;
}
FText GetTitleText() const override
{
return Tutorial->Title;
}
int32 GetSortOrder() const override
{
return Tutorial->SortOrder;
}
bool SortAgainst(TSharedRef<ITutorialListEntry> OtherEntry) const override
{
return (GetSortOrder() == OtherEntry->GetSortOrder()) ? (GetTitleText().CompareTo(OtherEntry->GetTitleText()) < 0) : (GetSortOrder() < OtherEntry->GetSortOrder());
}
FReply OnClicked(bool bRestart) const
{
OnTutorialSelected.ExecuteIfBound(Tutorial, bRestart);
return FReply::Handled();
}
TOptional<float> GetProgress() const
{
CacheProgress();
return Progress;
}
EVisibility GetProgressVisibility() const
{
if(LaunchButton->IsHovered())
{
CacheProgress();
return LaunchButton->IsHovered() && bHaveSeenTutorial ? EVisibility::Visible : EVisibility::Hidden;
}
return EVisibility::Hidden;
}
EVisibility GetRestartVisibility() const
{
if(LaunchButton->IsHovered())
{
CacheProgress();
return LaunchButton->IsHovered() && bHaveSeenTutorial ? EVisibility::Visible : EVisibility::Collapsed;
}
return EVisibility::Collapsed;
}
EVisibility GetCompletedVisibility() const override
{
CacheProgress();
return bHaveCompletedTutorial ? EVisibility::Visible : EVisibility::Hidden;
}
void CacheProgress() const
{
if(FPlatformTime::Seconds() - LastUpdateTime > TutorialBrowserConstants::ProgressUpdateInterval)
{
bHaveCompletedTutorial = GetDefault<UTutorialStateSettings>()->HaveCompletedTutorial(Tutorial);
bHaveSeenTutorial = false;
const int32 CurrentStage = GetDefault<UTutorialStateSettings>()->GetProgress(Tutorial, bHaveSeenTutorial);
Progress = (Tutorial->Stages.Num() > 0) ? (float)(CurrentStage + 1) / (float)Tutorial->Stages.Num() : 0.0f;
LastUpdateTime = FPlatformTime::Seconds();
}
}
/** FGCObject interface */
virtual void AddReferencedObjects(FReferenceCollector& Collector)
{
Collector.AddReferencedObject(Tutorial);
}
public:
/** Parent category */
TWeakPtr<ITutorialListEntry> ParentCategory;
/** Tutorial that we will launch */
UEditorTutorial* Tutorial;
/** Selection delegate */
FOnTutorialSelected OnTutorialSelected;
/** Text to highlight */
TAttribute<FText> HighlightText;
/** Button clicked to launch tutorial */
mutable TSharedPtr<SWidget> LaunchButton;
/** Documentation page reference to use if we are displaying a UDN doc */
mutable TSharedPtr<IDocumentationPage> DocumentationPage;
/** Static brush from the editor style */
const FSlateBrush* SlateBrush;
/** Dynamic brush from the texture specified by the user */
TSharedPtr<FSlateDynamicImageBrush> DynamicBrush;
/** Cached tutorial completion state */
mutable bool bHaveCompletedTutorial;
/** Cached tutorial seen state */
mutable bool bHaveSeenTutorial;
/** Cached tutorial progress */
mutable float Progress;
/** Last update time */
mutable float LastUpdateTime;
};
void STutorialsBrowser::Construct(const FArguments& InArgs)
{
bNeedsRefresh = false;
RefreshTimer = TutorialBrowserConstants::RefreshTimerInterval;
OnClosed = InArgs._OnClosed;
OnLaunchTutorial = InArgs._OnLaunchTutorial;
ParentWindow = InArgs._ParentWindow;
FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>(TEXT("AssetRegistry"));
AssetRegistryModule.Get().OnAssetAdded().AddSP(this, &STutorialsBrowser::HandleAssetAdded);
RegisterActiveTimer( TutorialBrowserConstants::RefreshTimerInterval, FWidgetActiveTimerDelegate::CreateSP( this, &STutorialsBrowser::TriggerReloadTutorials ) );
ChildSlot
[
SNew(SVerticalBox)
+SVerticalBox::Slot()
.AutoHeight()
[
SNew(SBorder)
.BorderImage(FEditorStyle::Get().GetBrush("ToolPanel.GroupBorder"))
.Padding(5.0f)
[
SNew(SHorizontalBox)
+SHorizontalBox::Slot()
.AutoWidth()
.VAlign(VAlign_Center)
[
SNew(SButton)
.OnClicked(this, &STutorialsBrowser::OnBackButtonClicked)
.IsEnabled(this, &STutorialsBrowser::IsBackButtonEnabled)
.ButtonStyle(&FEditorStyle::Get().GetWidgetStyle<FButtonStyle>("Tutorials.Browser.BackButton"))
.ForegroundColor(FSlateColor::UseForeground())
.Content()
[
SNew(SImage)
.Image(FEditorStyle::GetBrush("Tutorials.Browser.BackButton.Image"))
]
]
+SHorizontalBox::Slot()
.FillWidth(1.0f)
.VAlign(VAlign_Center)
.Padding(2.0f, 0.0f, 0.0f, 0.0f)
[
SNew(SVerticalBox)
+SVerticalBox::Slot()
.AutoHeight()
.Padding(0.0f, 1.0f)
[
SAssignNew(BreadcrumbTrail, SBreadcrumbTrail<TSharedPtr<ITutorialListEntry>>)
.ButtonContentPadding(FMargin(1.0f, 1.0f))
.DelimiterImage(FEditorStyle::GetBrush("Tutorials.Browser.Breadcrumb"))
.TextStyle(FEditorStyle::Get(), "Tutorials.Browser.PathText")
.ShowLeadingDelimiter( true )
.InvertTextColorOnHover( false )
.OnCrumbClicked(this, &STutorialsBrowser::OnBreadcrumbClicked)
]
+SVerticalBox::Slot()
.AutoHeight()
.Padding(0.0f, 1.0f)
[
SNew(SSearchBox)
.OnTextChanged(this, &STutorialsBrowser::OnSearchTextChanged)
]
]
]
]
+SVerticalBox::Slot()
.FillHeight(1.0f)
.Padding(0.0f, 3.0f, 0.0f, 0.0f)
[
SNew(SVerticalBox)
+SVerticalBox::Slot()
.FillHeight(1.0f)
[
SAssignNew(TutorialList, SListView<TSharedPtr<ITutorialListEntry>>)
.ItemHeight(128.0f)
.ListItemsSource(&FilteredEntries)
.OnGenerateRow(this, &STutorialsBrowser::OnGenerateTutorialRow)
.SelectionMode(ESelectionMode::None)
]
]
];
ReloadTutorials();
RebuildCrumbs();
}
inline void FTutorialListEntry_Category::AddTutorial(TSharedPtr<FTutorialListEntry_Tutorial> InTutorial)
{
Tutorials.Add(InTutorial);
}
EActiveTimerReturnType STutorialsBrowser::TriggerReloadTutorials( double InCurrentTime, float InDeltaTime )
{
if (bNeedsRefresh)
{
bNeedsRefresh = false;
ReloadTutorials();
}
return EActiveTimerReturnType::Continue;
}
void STutorialsBrowser::SetFilter(const FString& InFilter)
{
CategoryFilter = InFilter;
ReloadTutorials();
}
TSharedRef<ITableRow> STutorialsBrowser::OnGenerateTutorialRow(TSharedPtr<ITutorialListEntry> InItem, const TSharedRef<STableViewBase>& OwnerTable) const
{
return InItem->OnGenerateTutorialRow(OwnerTable);
}
TSharedPtr<FTutorialListEntry_Category> STutorialsBrowser::RebuildCategories()
{
TArray<TSharedPtr<FTutorialListEntry_Category>> Categories;
// add root category
TSharedPtr<FTutorialListEntry_Category> RootCategory = MakeShareable(new FTutorialListEntry_Category(FOnCategorySelected::CreateSP(this, &STutorialsBrowser::OnCategorySelected)));
Categories.Add(RootCategory);
// rebuild categories
for(const auto& TutorialCategory : GetDefault<UTutorialSettings>()->Categories)
{
Categories.Add(MakeShareable(new FTutorialListEntry_Category(TutorialCategory, FOnCategorySelected::CreateSP(this, &STutorialsBrowser::OnCategorySelected), TAttribute<FText>::Create(TAttribute<FText>::FGetter::CreateSP(this, &STutorialsBrowser::GetSearchText)))));
}
for(const auto& TutorialCategory : GetDefault<UEditorTutorialSettings>()->Categories)
{
Categories.Add(MakeShareable(new FTutorialListEntry_Category(TutorialCategory, FOnCategorySelected::CreateSP(this, &STutorialsBrowser::OnCategorySelected), TAttribute<FText>::Create(TAttribute<FText>::FGetter::CreateSP(this, &STutorialsBrowser::GetSearchText)))));
}
for(auto& Category : Categories)
{
// Figure out which base category this category belongs in
TSharedPtr<FTutorialListEntry_Category> ParentCategory = RootCategory;
const FString& CategoryPath = Category->Category.Identifier;
// We're expecting the category string to be in the "A.B.C" format. We'll split up the string here and form
// a proper hierarchy in the UI
TArray< FString > SplitCategories;
CategoryPath.ParseIntoArray( SplitCategories, TEXT( "." ), true /* bCullEmpty */ );
FString CurrentCategoryPath;
// Make sure all of the categories exist
for(const auto& SplitCategory : SplitCategories)
{
// Locate this category at the level we're at in the hierarchy
TSharedPtr<FTutorialListEntry_Category> FoundCategory = NULL;
TArray< TSharedPtr<ITutorialListEntry> >& TestCategoryList = ParentCategory.IsValid() ? ParentCategory->SubCategories : RootCategory->SubCategories;
for(auto& TestCategory : TestCategoryList)
{
if( StaticCastSharedPtr<FTutorialListEntry_Category>(TestCategory)->CategoryName == SplitCategory )
{
// Found it!
FoundCategory = StaticCastSharedPtr<FTutorialListEntry_Category>(TestCategory);
break;
}
}
if(!CurrentCategoryPath.IsEmpty())
{
CurrentCategoryPath += TEXT(".");
}
CurrentCategoryPath += SplitCategory;
if( !FoundCategory.IsValid() )
{
// OK, this is a new category name for us, so add it now!
if(CategoryPath == CurrentCategoryPath)
{
FoundCategory = Category;
}
else
{
FTutorialCategory InterveningCategory;
InterveningCategory.Identifier = CurrentCategoryPath;
FoundCategory = MakeShareable(new FTutorialListEntry_Category(InterveningCategory, FOnCategorySelected::CreateSP(this, &STutorialsBrowser::OnCategorySelected), TAttribute<FText>::Create(TAttribute<FText>::FGetter::CreateSP(this, &STutorialsBrowser::GetSearchText))));
}
FoundCategory->ParentCategory = ParentCategory;
TestCategoryList.Add( FoundCategory );
}
// Descend the hierarchy for the next category
ParentCategory = FoundCategory;
}
}
return RootCategory;
}
void STutorialsBrowser::RebuildTutorials(TSharedPtr<FTutorialListEntry_Category> InRootCategory)
{
TArray<TSharedPtr<FTutorialListEntry_Tutorial>> Tutorials;
//Ensure that tutorials are loaded into the asset registry before making a list of them.
FAssetRegistryModule& AssetRegistry = FModuleManager::LoadModuleChecked<FAssetRegistryModule>(TEXT("AssetRegistry"));
// rebuild tutorials
FARFilter Filter;
Filter.ClassNames.Add(UBlueprint::StaticClass()->GetFName());
Filter.bRecursiveClasses = true;
Filter.TagsAndValues.Add(TEXT("NativeParentClass"), FString::Printf(TEXT("%s'%s'"), *UClass::StaticClass()->GetName(), *UEditorTutorial::StaticClass()->GetPathName()));
Filter.TagsAndValues.Add(TEXT("ParentClass"), FString::Printf(TEXT("%s'%s'"), *UClass::StaticClass()->GetName(), *UEditorTutorial::StaticClass()->GetPathName()));
TArray<FAssetData> AssetData;
AssetRegistry.Get().GetAssets(Filter, AssetData);
for (const auto& TutorialAsset : AssetData)
{
UBlueprint* Blueprint = LoadObject<UBlueprint>(nullptr, *TutorialAsset.ObjectPath.ToString());
if (Blueprint && Blueprint->GeneratedClass && Blueprint->BlueprintType == BPTYPE_Normal)
{
UEditorTutorial* Tutorial = NewObject<UEditorTutorial>(GetTransientPackage(), Blueprint->GeneratedClass);
//UE-45734 - Loading the default object causes landscape tutorials to crash.
//UEditorTutorial* Tutorial = Blueprint->GeneratedClass->GetDefaultObject<UEditorTutorial>();
if(!Tutorial->bHideInBrowser)
{
Tutorials.Add(MakeShareable(new FTutorialListEntry_Tutorial(Tutorial, FOnTutorialSelected::CreateSP(this, &STutorialsBrowser::OnTutorialSelected), TAttribute<FText>::Create(TAttribute<FText>::FGetter::CreateSP(this, &STutorialsBrowser::GetSearchText)))));
}
}
}
// add tutorials to categories
for(const auto& Tutorial : Tutorials)
{
// Figure out which base category this tutorial belongs in
TSharedPtr<FTutorialListEntry_Category> CategoryForTutorial = InRootCategory;
const FString& CategoryPath = Tutorial->Tutorial->Category;
// We're expecting the category string to be in the "A.B.C" format. We'll split up the string here and form
// a proper hierarchy in the UI
TArray< FString > SplitCategories;
CategoryPath.ParseIntoArray( SplitCategories, TEXT( "." ), true /* bCullEmpty */ );
FString CurrentCategoryPath;
// Make sure all of the categories exist
for(const auto& SplitCategory : SplitCategories)
{
// Locate this category at the level we're at in the hierarchy
TSharedPtr<FTutorialListEntry_Category> FoundCategory = NULL;
TArray< TSharedPtr<ITutorialListEntry> >& TestCategoryList = CategoryForTutorial.IsValid() ? CategoryForTutorial->SubCategories : InRootCategory->SubCategories;
for(auto& TestCategory : TestCategoryList)
{
if( StaticCastSharedPtr<FTutorialListEntry_Category>(TestCategory)->CategoryName == SplitCategory )
{
// Found it!
FoundCategory = StaticCastSharedPtr<FTutorialListEntry_Category>(TestCategory);
break;
}
}
if(!CurrentCategoryPath.IsEmpty())
{
CurrentCategoryPath += TEXT(".");
}
CurrentCategoryPath += SplitCategory;
if( !FoundCategory.IsValid() )
{
// OK, this is a new category name for us, so add it now!
FTutorialCategory InterveningCategory;
InterveningCategory.Identifier = CurrentCategoryPath;
FoundCategory = MakeShareable(new FTutorialListEntry_Category(InterveningCategory, FOnCategorySelected::CreateSP(this, &STutorialsBrowser::OnCategorySelected), TAttribute<FText>::Create(TAttribute<FText>::FGetter::CreateSP(this, &STutorialsBrowser::GetSearchText))));
FoundCategory->ParentCategory = CategoryForTutorial;
TestCategoryList.Add( FoundCategory );
}
// Descend the hierarchy for the next category
CategoryForTutorial = FoundCategory;
}
Tutorial->ParentCategory = CategoryForTutorial;
CategoryForTutorial->AddTutorial( Tutorial );
}
}
void STutorialsBrowser::ReloadTutorials()
{
TSharedPtr<FTutorialListEntry_Category> RootCategory = RebuildCategories();
RebuildTutorials(RootCategory);
RootEntry = RootCategory;
// now filter & arrange available tutorials
FilterTutorials();
}
FReply STutorialsBrowser::OnCloseButtonClicked()
{
OnClosed.ExecuteIfBound();
return FReply::Handled();
}
FReply STutorialsBrowser::OnBackButtonClicked()
{
TSharedPtr<FTutorialListEntry_Category> CurrentCategory = FindCategory_Recursive(RootEntry);
if(CurrentCategory.IsValid() && CurrentCategory->ParentCategory.IsValid())
{
TSharedPtr<FTutorialListEntry_Category> PinnedParentCategory = StaticCastSharedPtr<FTutorialListEntry_Category>(CurrentCategory->ParentCategory.Pin());
if(PinnedParentCategory.IsValid())
{
NavigationFilter = PinnedParentCategory->Category.Identifier;
FilterTutorials();
}
}
RebuildCrumbs();
return FReply::Handled();
}
bool STutorialsBrowser::IsBackButtonEnabled() const
{
if(CurrentCategoryPtr.IsValid())
{
return CurrentCategoryPtr.Pin()->ParentCategory.IsValid();
}
return false;
}
void STutorialsBrowser::OnTutorialSelected(UEditorTutorial* InTutorial, bool bRestart)
{
if (InTutorial != nullptr)
{
if (FEngineAnalytics::IsAvailable())
{
TArray<FAnalyticsEventAttribute> EventAttributes;
EventAttributes.Add(FAnalyticsEventAttribute(TEXT("Restarted"), bRestart));
EventAttributes.Add(FAnalyticsEventAttribute(TEXT("TutorialAsset"), FIntroTutorials::AnalyticsEventNameFromTutorial(InTutorial)));
FEngineAnalytics::GetProvider().RecordEvent(TEXT("Rocket.Tutorials.LaunchedFromBrowser"), EventAttributes);
}
//Close the tutorial browser so it doesn't get in the way of the actual tutorial.
if (OnLaunchTutorial.IsBound())
{
FIntroTutorials& IntroTutorials = FModuleManager::GetModuleChecked<FIntroTutorials>(TEXT("IntroTutorials"));
IntroTutorials.DismissTutorialBrowser();
}
}
OnLaunchTutorial.ExecuteIfBound(InTutorial, bRestart ? IIntroTutorials::ETutorialStartType::TST_RESTART : IIntroTutorials::ETutorialStartType::TST_CONTINUE, ParentWindow, FSimpleDelegate(), FSimpleDelegate());
}
void STutorialsBrowser::OnCategorySelected(const FString& InCategory)
{
NavigationFilter = InCategory;
FilterTutorials();
RebuildCrumbs();
}
void STutorialsBrowser::FilterTutorials()
{
FilteredEntries.Empty();
if(SearchFilter.IsEmpty())
{
TSharedPtr<FTutorialListEntry_Category> CurrentCategory = FindCategory_Recursive(RootEntry);
if(CurrentCategory.IsValid())
{
for(const auto& SubCategory : CurrentCategory->SubCategories)
{
if(SubCategory->PassesFilter(CategoryFilter, SearchFilter.ToString()))
{
FilteredEntries.Add(SubCategory);
}
}
for(const auto& Tutorial : CurrentCategory->Tutorials)
{
if(Tutorial->PassesFilter(CategoryFilter, SearchFilter.ToString()))
{
FilteredEntries.Add(Tutorial);
}
}
CurrentCategoryPtr = CurrentCategory;
}
}
else
{
struct Local
{
static void AddSubCategory_Recursive(const FString& InCategoryFilter, const FString& InSearchFilter, TSharedPtr<FTutorialListEntry_Category> InCategory, TArray<TSharedPtr<ITutorialListEntry>>& InOutFilteredEntries)
{
if(InCategory.IsValid())
{
for(const auto& SubCategory : InCategory->SubCategories)
{
if(SubCategory->PassesFilter(InCategoryFilter, InSearchFilter))
{
InOutFilteredEntries.Add(SubCategory);
}
AddSubCategory_Recursive(InCategoryFilter, InSearchFilter, StaticCastSharedPtr<FTutorialListEntry_Category>(SubCategory), InOutFilteredEntries);
}
for(const auto& Tutorial : InCategory->Tutorials)
{
if(Tutorial->PassesFilter(InCategoryFilter, InSearchFilter))
{
InOutFilteredEntries.Add(Tutorial);
}
}
}
};
};
TSharedPtr<FTutorialListEntry_Category> CurrentCategory = FindCategory_Recursive(RootEntry);
if(CurrentCategory.IsValid())
{
Local::AddSubCategory_Recursive(CategoryFilter, SearchFilter.ToString(), CurrentCategory, FilteredEntries);
CurrentCategoryPtr = CurrentCategory;
}
}
FilteredEntries.Sort(
[](TSharedPtr<ITutorialListEntry> EntryA, TSharedPtr<ITutorialListEntry> EntryB)->bool
{
if(EntryA.IsValid() && EntryB.IsValid())
{
return EntryA->SortAgainst(EntryB.ToSharedRef());
}
return false;
}
);
TutorialList->RequestListRefresh();
}
TSharedPtr<FTutorialListEntry_Category> STutorialsBrowser::FindCategory_Recursive(TSharedPtr<FTutorialListEntry_Category> InCategory) const
{
if(InCategory.IsValid())
{
if(InCategory->Category.Identifier == NavigationFilter)
{
return InCategory;
}
for(const auto& Category : InCategory->SubCategories)
{
TSharedPtr<FTutorialListEntry_Category> TestCategory = FindCategory_Recursive(StaticCastSharedPtr<FTutorialListEntry_Category>(Category));
if(TestCategory.IsValid())
{
return TestCategory;
}
}
}
return TSharedPtr<FTutorialListEntry_Category>();
}
void STutorialsBrowser::OnSearchTextChanged(const FText& InText)
{
SearchFilter = InText;
FilterTutorials();
}
FText STutorialsBrowser::GetSearchText() const
{
return SearchFilter;
}
void STutorialsBrowser::OnBreadcrumbClicked(const TSharedPtr<ITutorialListEntry>& InEntry)
{
TSharedPtr<ITutorialListEntry> ClickedEntry = InEntry;
if(ClickedEntry.IsValid())
{
NavigationFilter = StaticCastSharedPtr<FTutorialListEntry_Category>(ClickedEntry)->Category.Identifier;
}
else
{
NavigationFilter.Empty();
}
RebuildCrumbs();
FilterTutorials();
}
void STutorialsBrowser::RebuildCrumbs()
{
BreadcrumbTrail->ClearCrumbs();
// rebuild crumbs to this point
TArray<TSharedPtr<FTutorialListEntry_Category>> Entries;
TSharedPtr<FTutorialListEntry_Category> CurrentCategory = FindCategory_Recursive(RootEntry);
if(CurrentCategory.IsValid())
{
TSharedPtr<FTutorialListEntry_Category> Category = StaticCastSharedPtr<FTutorialListEntry_Category>(CurrentCategory);
while(Category.IsValid())
{
Entries.Add(Category);
if(Category->ParentCategory.IsValid())
{
Category = StaticCastSharedPtr<FTutorialListEntry_Category>(Category->ParentCategory.Pin());
}
else
{
break;
}
}
}
for(int32 Index = Entries.Num() - 1; Index >= 0; Index--)
{
TSharedPtr<FTutorialListEntry_Category> Entry = Entries[Index];
if(RootEntry == Entry)
{
BreadcrumbTrail->PushCrumb(LOCTEXT("PathRoot", "Tutorials"), TSharedPtr<ITutorialListEntry>());
}
else
{
BreadcrumbTrail->PushCrumb(Entry->GetTitleText(), Entry);
}
}
}
void STutorialsBrowser::HandleAssetAdded(const FAssetData& InAssetData)
{
if(InAssetData.AssetClass == UBlueprint::StaticClass()->GetFName())
{
const FString ParentClassPath = InAssetData.GetTagValueRef<FString>("ParentClass");
if(!ParentClassPath.IsEmpty())
{
UClass* ParentClass = FindObject<UClass>(NULL, *ParentClassPath);
if(ParentClass == UEditorTutorial::StaticClass())
{
bNeedsRefresh = true;
}
}
}
}
#undef LOCTEXT_NAMESPACE
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