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441324a228
- Simplied the task icon - Created common treeview for States, used for state selection and outliner view - Added common functions to describe state links and transitions - Made custom expander arrow the main tree view - Move the task lits on separate row on the main tree view - Added enter condition list for on main tree view - Clicking on tasks or enter conditions highlight them in the details panel - Added state outliner which displays the state list compactly - Added feedback for the drag and drop, and moved the code to separate file #rb Yoan.StAmant [CL 35239895 by mikko mononen in ue5-main branch]
686 lines
18 KiB
C++
686 lines
18 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "SStateTreeView.h"
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#include "Debugger/StateTreeDebuggerTypes.h"
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#include "Framework/Commands/UICommandList.h"
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#include "Framework/MultiBox/MultiBoxBuilder.h"
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#include "SPositiveActionButton.h"
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#include "SStateTreeViewRow.h"
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#include "StateTreeViewModel.h"
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#include "StateTreeState.h"
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#include "StateTreeEditorCommands.h"
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#include "StateTreeSettings.h"
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#include "Widgets/Layout/SScrollBox.h"
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#define LOCTEXT_NAMESPACE "StateTreeEditor"
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SStateTreeView::SStateTreeView()
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: RequestedRenameState(nullptr)
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, bItemsDirty(false)
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, bUpdatingSelection(false)
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{
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}
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SStateTreeView::~SStateTreeView()
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{
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if (StateTreeViewModel)
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{
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StateTreeViewModel->GetOnAssetChanged().RemoveAll(this);
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StateTreeViewModel->GetOnStatesRemoved().RemoveAll(this);
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StateTreeViewModel->GetOnStatesMoved().RemoveAll(this);
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StateTreeViewModel->GetOnStateAdded().RemoveAll(this);
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StateTreeViewModel->GetOnStatesChanged().RemoveAll(this);
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StateTreeViewModel->GetOnSelectionChanged().RemoveAll(this);
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}
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}
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void SStateTreeView::Construct(const FArguments& InArgs, TSharedRef<FStateTreeViewModel> InStateTreeViewModel, const TSharedRef<FUICommandList>& InCommandList)
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{
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StateTreeViewModel = InStateTreeViewModel;
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StateTreeViewModel->GetOnAssetChanged().AddSP(this, &SStateTreeView::HandleModelAssetChanged);
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StateTreeViewModel->GetOnStatesRemoved().AddSP(this, &SStateTreeView::HandleModelStatesRemoved);
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StateTreeViewModel->GetOnStatesMoved().AddSP(this, &SStateTreeView::HandleModelStatesMoved);
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StateTreeViewModel->GetOnStateAdded().AddSP(this, &SStateTreeView::HandleModelStateAdded);
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StateTreeViewModel->GetOnStatesChanged().AddSP(this, &SStateTreeView::HandleModelStatesChanged);
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StateTreeViewModel->GetOnSelectionChanged().AddSP(this, &SStateTreeView::HandleModelSelectionChanged);
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bUpdatingSelection = false;
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TSharedRef<SScrollBar> HorizontalScrollBar = SNew(SScrollBar)
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.Orientation(Orient_Horizontal)
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.Thickness(FVector2D(12.0f, 12.0f));
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TSharedRef<SScrollBar> VerticalScrollBar = SNew(SScrollBar)
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.Orientation(Orient_Vertical)
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.Thickness(FVector2D(12.0f, 12.0f));
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StateTreeViewModel->GetSubTrees(Subtrees);
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TreeView = SNew(STreeView<TWeakObjectPtr<UStateTreeState>>)
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.OnGenerateRow(this, &SStateTreeView::HandleGenerateRow)
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.OnGetChildren(this, &SStateTreeView::HandleGetChildren)
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.TreeItemsSource(&Subtrees)
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.OnSelectionChanged(this, &SStateTreeView::HandleTreeSelectionChanged)
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.OnExpansionChanged(this, &SStateTreeView::HandleTreeExpansionChanged)
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.OnContextMenuOpening(this, &SStateTreeView::HandleContextMenuOpening)
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.AllowOverscroll(EAllowOverscroll::Yes)
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.ExternalScrollbar(VerticalScrollBar);
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ChildSlot
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[
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SNew(SVerticalBox)
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+ SVerticalBox::Slot()
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.VAlign(VAlign_Center)
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.AutoHeight()
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[
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SNew(SBorder)
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.BorderImage(FAppStyle::GetBrush("ToolPanel.GroupBorder"))
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.Padding(2.0f)
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[
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SNew(SHorizontalBox)
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// New State
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+ SHorizontalBox::Slot()
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.VAlign(VAlign_Center)
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.Padding(4.0f, 2.0f)
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.AutoWidth()
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[
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SNew(SPositiveActionButton)
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.ToolTipText(LOCTEXT("AddStateToolTip", "Add New State"))
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.Icon(FAppStyle::Get().GetBrush("Icons.Plus"))
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.Text(LOCTEXT("AddState", "Add State"))
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.OnClicked(this, &SStateTreeView::HandleAddStateButton)
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]
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]
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]
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+SVerticalBox::Slot()
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.Padding(0.0f, 6.0f, 0.0f, 0.0f)
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[
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SNew(SHorizontalBox)
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+ SHorizontalBox::Slot()
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.FillWidth(1.0f)
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.Padding(0.0f)
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[
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SAssignNew(ViewBox, SScrollBox)
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.Orientation(Orient_Horizontal)
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.ExternalScrollbar(HorizontalScrollBar)
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+SScrollBox::Slot()
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.FillSize(1.0f)
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[
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TreeView.ToSharedRef()
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]
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]
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+ SHorizontalBox::Slot()
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.AutoWidth()
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[
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VerticalScrollBar
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]
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]
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+SVerticalBox::Slot()
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.AutoHeight()
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[
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HorizontalScrollBar
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]
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];
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UpdateTree(true);
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CommandList = InCommandList;
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BindCommands();
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}
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void SStateTreeView::BindCommands()
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{
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const FStateTreeEditorCommands& Commands = FStateTreeEditorCommands::Get();
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CommandList->MapAction(
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Commands.AddSiblingState,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleAddSiblingState),
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FCanExecuteAction());
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CommandList->MapAction(
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Commands.AddChildState,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleAddChildState),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::HasSelection));
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CommandList->MapAction(
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Commands.CutStates,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleCutSelectedStates),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::HasSelection));
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CommandList->MapAction(
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Commands.CopyStates,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleCopySelectedStates),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::HasSelection));
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CommandList->MapAction(
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Commands.DeleteStates,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleDeleteStates),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::HasSelection));
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CommandList->MapAction(
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Commands.PasteStatesAsSiblings,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandlePasteStatesAsSiblings),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::CanPaste));
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CommandList->MapAction(
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Commands.PasteStatesAsChildren,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandlePasteStatesAsChildren),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::CanPaste));
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CommandList->MapAction(
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Commands.DuplicateStates,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleDuplicateSelectedStates),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::HasSelection));
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CommandList->MapAction(
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Commands.RenameState,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleRenameState),
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FCanExecuteAction::CreateSP(this, &SStateTreeView::HasSelection));
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CommandList->MapAction(
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Commands.EnableStates,
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FExecuteAction::CreateSP(this, &SStateTreeView::HandleEnableSelectedStates),
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FCanExecuteAction(),
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FGetActionCheckState::CreateSPLambda(this, [this]
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{
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const bool bCanEnable = CanEnableStates();
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const bool bCanDisable = CanDisableStates();
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if (bCanEnable && bCanDisable)
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{
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return ECheckBoxState::Undetermined;
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}
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if (bCanDisable)
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{
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return ECheckBoxState::Checked;
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}
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if (bCanEnable)
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{
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return ECheckBoxState::Unchecked;
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}
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// Should not happen since action is not visible in this case
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return ECheckBoxState::Undetermined;
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}),
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FIsActionButtonVisible::CreateSPLambda(this, [this]
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{
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return CanEnableStates() || CanDisableStates();
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}));
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#if WITH_STATETREE_TRACE_DEBUGGER
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CommandList->MapAction(
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Commands.EnableOnEnterStateBreakpoint,
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FExecuteAction::CreateSPLambda(this, [this]
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{
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if (StateTreeViewModel)
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{
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StateTreeViewModel->HandleEnableStateBreakpoint(EStateTreeBreakpointType::OnEnter);
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}
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}),
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FCanExecuteAction(),
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FGetActionCheckState::CreateSPLambda(this, [this]
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{
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return StateTreeViewModel ? StateTreeViewModel->GetStateBreakpointCheckState(EStateTreeBreakpointType::OnEnter) : ECheckBoxState::Unchecked;
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}),
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FIsActionButtonVisible::CreateSPLambda(this, [this]
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{
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return (StateTreeViewModel)
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&& (StateTreeViewModel->CanAddStateBreakpoint(EStateTreeBreakpointType::OnEnter)
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|| StateTreeViewModel->CanRemoveStateBreakpoint(EStateTreeBreakpointType::OnEnter));
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}));
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CommandList->MapAction(
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Commands.EnableOnExitStateBreakpoint,
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FExecuteAction::CreateSPLambda(this, [this]
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{
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if (StateTreeViewModel)
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{
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StateTreeViewModel->HandleEnableStateBreakpoint(EStateTreeBreakpointType::OnExit);
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}
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}),
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FCanExecuteAction(),
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FGetActionCheckState::CreateSPLambda(this, [this]
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{
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return StateTreeViewModel ? StateTreeViewModel->GetStateBreakpointCheckState(EStateTreeBreakpointType::OnExit) : ECheckBoxState::Unchecked;
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}),
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FIsActionButtonVisible::CreateSPLambda(this, [this]
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{
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return (StateTreeViewModel)
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&& (StateTreeViewModel->CanAddStateBreakpoint(EStateTreeBreakpointType::OnExit)
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|| StateTreeViewModel->CanRemoveStateBreakpoint(EStateTreeBreakpointType::OnExit));
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}));
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#endif // WITH_STATETREE_TRACE_DEBUGGER
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}
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bool SStateTreeView::HasSelection() const
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{
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return StateTreeViewModel && StateTreeViewModel->HasSelection();
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}
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bool SStateTreeView::CanPaste() const
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{
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return StateTreeViewModel
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&& StateTreeViewModel->HasSelection()
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&& StateTreeViewModel->CanPasteStatesFromClipboard();
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}
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bool SStateTreeView::CanEnableStates() const
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{
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return StateTreeViewModel
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&& StateTreeViewModel->HasSelection()
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&& StateTreeViewModel->CanEnableStates();
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}
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bool SStateTreeView::CanDisableStates() const
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{
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return StateTreeViewModel
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&& StateTreeViewModel->HasSelection()
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&& StateTreeViewModel->CanDisableStates();
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}
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FReply SStateTreeView::OnKeyDown(const FGeometry& MyGeometry, const FKeyEvent& InKeyEvent)
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{
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if(CommandList->ProcessCommandBindings(InKeyEvent))
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{
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return FReply::Handled();
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}
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else
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{
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return SCompoundWidget::OnKeyDown(MyGeometry, InKeyEvent);
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}
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}
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void SStateTreeView::SavePersistentExpandedStates()
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{
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if (!StateTreeViewModel)
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{
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return;
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}
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TSet<TWeakObjectPtr<UStateTreeState>> ExpandedStates;
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TreeView->GetExpandedItems(ExpandedStates);
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StateTreeViewModel->SetPersistentExpandedStates(ExpandedStates);
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}
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void SStateTreeView::Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime)
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{
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if (bItemsDirty)
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{
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UpdateTree(/*bExpandPersistent*/true);
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}
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if (RequestedRenameState && !TreeView->IsPendingRefresh())
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{
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if (TSharedPtr<SStateTreeViewRow> Row = StaticCastSharedPtr<SStateTreeViewRow>(TreeView->WidgetFromItem(RequestedRenameState)))
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{
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Row->RequestRename();
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}
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RequestedRenameState = nullptr;
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}
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}
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void SStateTreeView::UpdateTree(bool bExpandPersistent)
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{
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if (!StateTreeViewModel)
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{
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return;
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}
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TSet<TWeakObjectPtr<UStateTreeState>> ExpandedStates;
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if (bExpandPersistent)
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{
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// Get expanded state from the tree data.
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StateTreeViewModel->GetPersistentExpandedStates(ExpandedStates);
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}
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else
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{
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// Restore current expanded state.
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TreeView->GetExpandedItems(ExpandedStates);
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}
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// Remember selection
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TArray<TWeakObjectPtr<UStateTreeState>> SelectedStates;
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StateTreeViewModel->GetSelectedStates(SelectedStates);
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// Regenerate items
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StateTreeViewModel->GetSubTrees(Subtrees);
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TreeView->SetTreeItemsSource(&Subtrees);
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// Restore expanded state
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for (const TWeakObjectPtr<UStateTreeState>& State : ExpandedStates)
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{
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TreeView->SetItemExpansion(State, true);
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}
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// Restore selected state
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TreeView->ClearSelection();
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TreeView->SetItemSelection(SelectedStates, true);
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TreeView->RequestTreeRefresh();
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bItemsDirty = false;
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}
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void SStateTreeView::HandleModelAssetChanged()
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{
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bItemsDirty = true;
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}
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void SStateTreeView::HandleModelStatesRemoved(const TSet<UStateTreeState*>& AffectedParents)
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{
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bItemsDirty = true;
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}
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void SStateTreeView::HandleModelStatesMoved(const TSet<UStateTreeState*>& AffectedParents, const TSet<UStateTreeState*>& MovedStates)
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{
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bItemsDirty = true;
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}
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void SStateTreeView::HandleModelStateAdded(UStateTreeState* ParentState, UStateTreeState* NewState)
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{
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bItemsDirty = true;
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// Request to rename the state immediately.
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RequestedRenameState = NewState;
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if (StateTreeViewModel.IsValid())
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{
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StateTreeViewModel->SetSelection(NewState);
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}
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}
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void SStateTreeView::HandleModelStatesChanged(const TSet<UStateTreeState*>& AffectedStates, const FPropertyChangedEvent& PropertyChangedEvent)
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{
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bool bArraysChanged = false;
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// The purpose of the rebuild below is to update the task visualization (number of widgets change).
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// This method is called when anything in a state changes, make sure to only rebuild when needed.
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if (PropertyChangedEvent.MemberProperty->GetFName() == GET_MEMBER_NAME_CHECKED(UStateTreeState, Tasks))
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{
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bArraysChanged = true;
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}
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if (PropertyChangedEvent.MemberProperty->GetFName() == GET_MEMBER_NAME_CHECKED(UStateTreeState, Transitions))
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{
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bArraysChanged = true;
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}
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if (PropertyChangedEvent.MemberProperty->GetFName() == GET_MEMBER_NAME_CHECKED(UStateTreeState, EnterConditions))
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{
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bArraysChanged = true;
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}
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if (bArraysChanged)
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{
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TreeView->RebuildList();
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}
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}
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void SStateTreeView::HandleModelSelectionChanged(const TArray<TWeakObjectPtr<UStateTreeState>>& SelectedStates)
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{
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if (bUpdatingSelection)
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{
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return;
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}
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TreeView->ClearSelection();
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if (SelectedStates.Num() > 0)
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{
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TreeView->SetItemSelection(SelectedStates, /*bSelected*/true);
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if (SelectedStates.Num() == 1)
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{
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TreeView->RequestScrollIntoView(SelectedStates[0]);
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}
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}
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}
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TSharedRef<ITableRow> SStateTreeView::HandleGenerateRow(TWeakObjectPtr<UStateTreeState> InState, const TSharedRef<STableViewBase>& InOwnerTableView)
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{
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return SNew(SStateTreeViewRow, InOwnerTableView, InState, ViewBox, StateTreeViewModel.ToSharedRef());
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}
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void SStateTreeView::HandleGetChildren(TWeakObjectPtr<UStateTreeState> InParent, TArray<TWeakObjectPtr<UStateTreeState>>& OutChildren)
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{
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if (const UStateTreeState* Parent = InParent.Get())
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{
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OutChildren.Append(Parent->Children);
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}
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}
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void SStateTreeView::HandleTreeSelectionChanged(TWeakObjectPtr<UStateTreeState> InSelectedItem, ESelectInfo::Type SelectionType)
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{
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if (!StateTreeViewModel)
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{
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return;
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}
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// Do not report code based selection changes.
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if (SelectionType == ESelectInfo::Direct)
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{
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return;
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}
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TArray<TWeakObjectPtr<UStateTreeState>> SelectedItems = TreeView->GetSelectedItems();
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bUpdatingSelection = true;
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StateTreeViewModel->SetSelection(SelectedItems);
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bUpdatingSelection = false;
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}
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void SStateTreeView::HandleTreeExpansionChanged(TWeakObjectPtr<UStateTreeState> InSelectedItem, bool bExpanded)
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{
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// Not calling Modify() on the state as we don't want the expansion to dirty the asset.
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// @todo: this is temporary fix for a bug where adding a state will reset the expansion state.
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if (UStateTreeState* State = InSelectedItem.Get())
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{
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State->bExpanded = bExpanded;
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}
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}
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TSharedPtr<SWidget> SStateTreeView::HandleContextMenuOpening()
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{
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if (!StateTreeViewModel)
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{
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return nullptr;
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}
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FMenuBuilder MenuBuilder(true, CommandList);
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MenuBuilder.AddSubMenu(
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LOCTEXT("AddState", "Add State"),
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FText(),
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FNewMenuDelegate::CreateLambda([this](FMenuBuilder& MenuBuilder)
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{
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MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().AddSiblingState);
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MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().AddChildState);
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}),
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/*bInOpenSubMenuOnClick =*/false,
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FSlateIcon(FAppStyle::GetAppStyleSetName(), "Icons.Plus")
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);
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MenuBuilder.AddSeparator();
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MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().CutStates);
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MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().CopyStates);
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MenuBuilder.AddSubMenu(
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LOCTEXT("Paste", "Paste"),
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FText(),
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FNewMenuDelegate::CreateLambda([this](FMenuBuilder& MenuBuilder)
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{
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MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().PasteStatesAsSiblings);
|
|
MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().PasteStatesAsChildren);
|
|
}),
|
|
/*bInOpenSubMenuOnClick =*/false,
|
|
FSlateIcon(FAppStyle::GetAppStyleSetName(), "GenericCommands.Paste")
|
|
);
|
|
|
|
MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().DuplicateStates);
|
|
MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().DeleteStates);
|
|
MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().RenameState);
|
|
MenuBuilder.AddSeparator();
|
|
MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().EnableStates);
|
|
|
|
#if WITH_STATETREE_TRACE_DEBUGGER
|
|
MenuBuilder.AddSeparator();
|
|
MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().EnableOnEnterStateBreakpoint);
|
|
MenuBuilder.AddMenuEntry(FStateTreeEditorCommands::Get().EnableOnExitStateBreakpoint);
|
|
#endif // WITH_STATETREE_TRACE_DEBUGGER
|
|
|
|
return MenuBuilder.MakeWidget();
|
|
}
|
|
|
|
|
|
FReply SStateTreeView::HandleAddStateButton()
|
|
{
|
|
if (StateTreeViewModel == nullptr)
|
|
{
|
|
return FReply::Handled();
|
|
}
|
|
|
|
TArray<UStateTreeState*> SelectedStates;
|
|
StateTreeViewModel->GetSelectedStates(SelectedStates);
|
|
UStateTreeState* FirstSelectedState = SelectedStates.Num() > 0 ? SelectedStates[0] : nullptr;
|
|
|
|
if (FirstSelectedState != nullptr)
|
|
{
|
|
// If the state is root, add child state, else sibling.
|
|
if (FirstSelectedState->Parent == nullptr)
|
|
{
|
|
StateTreeViewModel->AddChildState(FirstSelectedState);
|
|
TreeView->SetItemExpansion(FirstSelectedState, true);
|
|
}
|
|
else
|
|
{
|
|
StateTreeViewModel->AddState(FirstSelectedState);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Add root state at the lowest level.
|
|
StateTreeViewModel->AddState(nullptr);
|
|
}
|
|
|
|
return FReply::Handled();
|
|
}
|
|
|
|
UStateTreeState* SStateTreeView::GetFirstSelectedState() const
|
|
{
|
|
TArray<UStateTreeState*> SelectedStates;
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->GetSelectedStates(SelectedStates);
|
|
}
|
|
return SelectedStates.IsEmpty() ? nullptr : SelectedStates[0];
|
|
}
|
|
|
|
void SStateTreeView::HandleAddSiblingState()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->AddState(GetFirstSelectedState());
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandleAddChildState()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
UStateTreeState* ParentState = GetFirstSelectedState();
|
|
if (ParentState)
|
|
{
|
|
StateTreeViewModel->AddChildState(ParentState);
|
|
TreeView->SetItemExpansion(ParentState, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandleCutSelectedStates()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->CopySelectedStates();
|
|
StateTreeViewModel->RemoveSelectedStates();
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandleCopySelectedStates()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->CopySelectedStates();
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandlePasteStatesAsSiblings()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->PasteStatesFromClipboard(GetFirstSelectedState());
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandlePasteStatesAsChildren()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->PasteStatesAsChildrenFromClipboard(GetFirstSelectedState());
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandleDuplicateSelectedStates()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->DuplicateSelectedStates();
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandleDeleteStates()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->RemoveSelectedStates();
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandleRenameState()
|
|
{
|
|
RequestedRenameState = GetFirstSelectedState();
|
|
}
|
|
|
|
void SStateTreeView::HandleEnableSelectedStates()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
// Process CanEnable first so in case of undetermined state (mixed selection) we Enable by default.
|
|
if (CanEnableStates())
|
|
{
|
|
StateTreeViewModel->SetSelectedStatesEnabled(true);
|
|
}
|
|
else if (CanDisableStates())
|
|
{
|
|
StateTreeViewModel->SetSelectedStatesEnabled(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void SStateTreeView::HandleDisableSelectedStates()
|
|
{
|
|
if (StateTreeViewModel)
|
|
{
|
|
StateTreeViewModel->SetSelectedStatesEnabled(false);
|
|
}
|
|
}
|
|
|
|
#undef LOCTEXT_NAMESPACE
|