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7f9f45ce6a
[Bugfix] fixed detail's diff code that assumed non-multiedit mode. [Feature] Moved code in FDetailsDiffControl::GetLinkedScrollRate to FAsyncDetailViewDiff::GenerateScrollSyncRate so that it can be used without FDetailsDiffControl [Feature] Made details splitter highlight colors use a callback rather than a map of conflicts so it's more versatile [Feature] Changed the TreeDiffSpecification to use a virtual class TTreeDiffSpecification instead so that individual methods can be overriden for a specific use case [Feature] Added callback to details splitter to tell it to ignore a row when highlighting #rb dan.oconnor [CL 28238088 by jordan hoffmann in ue5-main branch]
67 lines
3.1 KiB
C++
67 lines
3.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "AsyncTreeDifferences.h"
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#include "DiffUtils.h"
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#include "IDetailsView.h"
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template<>
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class PROPERTYEDITOR_API TTreeDiffSpecification<TWeakPtr<FDetailTreeNode>>
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{
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public:
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virtual ~TTreeDiffSpecification() = default;
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/**
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* determine whether the values stored in two nodes are equal.
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* @param TreeNodeA node from the first user provided tree (guaranteed not to be null)
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* @param TreeNodeB node from the second user provided tree (guaranteed not to be null)
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*/
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virtual bool AreValuesEqual(const TWeakPtr<FDetailTreeNode>& TreeNodeA, const TWeakPtr<FDetailTreeNode>& TreeNodeB) const;
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/**
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* determine whether two nodes occupy the same space in their trees
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* for example if you have a tree key/value pairs, AreMatching should compare the keys while AreValuesEqual
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* should compare the values
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* @param TreeNodeA node from the first user provided tree (guaranteed not to be null)
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* @param TreeNodeB node from the second user provided tree (guaranteed not to be null)
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*/
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virtual bool AreMatching(const TWeakPtr<FDetailTreeNode>& TreeNodeA, const TWeakPtr<FDetailTreeNode>& TreeNodeB) const;
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/**
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* retrieves an array of children nodes from the parent node
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* @param InParent node from one of the two user provided trees (guaranteed not to be null)
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* @param[out] OutChildren to be filled with the children of parent
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*/
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virtual void GetChildren(const TWeakPtr<FDetailTreeNode>& InParent, TArray<TWeakPtr<FDetailTreeNode>>& OutChildren) const;
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/**
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* return true for nodes that match using AreValuesEqual first, and pair up by position second
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* this is useful for arrays since we often want to keep elements with the same data paired while diffing other elements in order
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* @param TreeNode node from one of the two user provided trees (guaranteed not to be null)
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*/
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virtual bool ShouldMatchByValue(const TWeakPtr<FDetailTreeNode>& TreeNode) const;
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};
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// asynchronously update a difference tree with changes to details views
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// note: users are expected to call TAsyncTreeDifferences::Tick or TAsyncTreeDifferences::FlushQueue to get accurate data
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class PROPERTYEDITOR_API FAsyncDetailViewDiff : public TAsyncTreeDifferences<TWeakPtr<FDetailTreeNode>>
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{
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public:
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FAsyncDetailViewDiff(TSharedRef<IDetailsView> LeftView, TSharedRef<IDetailsView> RightView);
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// Note: by default this list is not necessarily accurate or exhaustive.
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// if you need a perfectly accurate list, call FlushQueue() first
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void GetPropertyDifferences(TArray<FSingleObjectDiffEntry>& OutDiffEntries) const;
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// execute a method for each node associated with a row in at least one details view
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// method provides current left and right row number
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// returns the number of rows in each details view
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TPair<int32, int32> ForEachRow(const TFunction<ETreeTraverseControl(const TUniquePtr<DiffNodeType>&, int32, int32)>& Method) const;
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// generates scroll data used by LinkableScrollbar
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TArray<FVector2f> GenerateScrollSyncRate() const;
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private:
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static TAttribute<TArray<TWeakPtr<FDetailTreeNode>>> RootNodesAttribute(TWeakPtr<IDetailsView> DetailsView);
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TWeakPtr<IDetailsView> LeftView;
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TWeakPtr<IDetailsView> RightView;
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};
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