From f15361bdd76702398051186fd969e81db6b6ac8a Mon Sep 17 00:00:00 2001
From: Liang Ding <d@b3log.org>
Date: Fri, 9 Sep 2022 11:03:37 +0800
Subject: [PATCH] =?UTF-8?q?:art:=20=E8=B0=83=E7=94=A8=20API=20`setBlockAtt?=
 =?UTF-8?q?rs`=20=E5=90=8E=E6=8E=A8=E9=80=81=20Transaction=20Fix=20https:/?=
 =?UTF-8?q?/github.com/siyuan-note/siyuan/issues/5847=20=E8=87=AA=E5=AE=9A?=
 =?UTF-8?q?=E4=B9=89=E5=B1=9E=E6=80=A7=E6=9B=B4=E6=94=B9=E4=B8=8E=E5=88=A0?=
 =?UTF-8?q?=E9=99=A4=E5=BC=82=E5=B8=B8=20Fix=20https://github.com/siyuan-n?=
 =?UTF-8?q?ote/siyuan/issues/5841?=
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---
 kernel/model/blockial.go    | 22 ++++++++++++++++++++++
 kernel/model/transaction.go | 11 -----------
 2 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/kernel/model/blockial.go b/kernel/model/blockial.go
index 17570221c..42e98bc81 100644
--- a/kernel/model/blockial.go
+++ b/kernel/model/blockial.go
@@ -22,6 +22,7 @@ import (
 	"time"
 
 	"github.com/88250/gulu"
+	"github.com/88250/lute"
 	"github.com/88250/lute/ast"
 	"github.com/88250/lute/html"
 	"github.com/88250/lute/lex"
@@ -105,6 +106,9 @@ func SetBlockAttrs(id string, nameValues map[string]string) (err error) {
 		return errors.New(fmt.Sprintf(Conf.Language(15), id))
 	}
 
+	luteEngine := NewLute()
+	oldDom := lute.RenderNodeBlockDOM(node, luteEngine.ParseOptions, luteEngine.RenderOptions)
+
 	for name, _ := range nameValues {
 		for i := 0; i < len(name); i++ {
 			if !lex.IsASCIILetterNumHyphen(name[i]) {
@@ -126,9 +130,27 @@ func SetBlockAttrs(id string, nameValues map[string]string) (err error) {
 	}
 	IncSync()
 	cache.PutBlockIAL(id, parse.IAL2Map(node.KramdownIAL))
+
+	dom := lute.RenderNodeBlockDOM(node, luteEngine.ParseOptions, luteEngine.RenderOptions)
+	if oldDom == dom {
+		return
+	}
+	doOp := &Operation{Action: "update", Data: dom, ID: id}
+	undoOp := &Operation{Action: "update", Data: oldDom, ID: id}
+	trans := []*Transaction{{
+		DoOperations:   []*Operation{doOp},
+		UndoOperations: []*Operation{undoOp},
+	}}
+	pushBroadcastTransactions(trans)
 	return
 }
 
+func pushBroadcastTransactions(transactions []*Transaction) {
+	evt := util.NewCmdResult("transactions", 0, util.PushModeBroadcast, util.PushModeBroadcast)
+	evt.Data = transactions
+	util.PushEvent(evt)
+}
+
 func ResetBlockAttrs(id string, nameValues map[string]string) (err error) {
 	tree, err := loadTreeByBlockID(id)
 	if nil != err {
diff --git a/kernel/model/transaction.go b/kernel/model/transaction.go
index 8bc11b866..54e182a8d 100644
--- a/kernel/model/transaction.go
+++ b/kernel/model/transaction.go
@@ -904,17 +904,6 @@ func (tx *Transaction) doUpdate(operation *Operation) (ret *TxErr) {
 		treenode.MoveFoldHeading(updatedNode, oldNode)
 	}
 
-	// 挂件移动或设置大小后属性丢失 https://github.com/siyuan-note/siyuan/issues/4885
-	// 这里需要把旧节点的属性复制到新节点上，避免属性丢失
-	oldIAL := parse.IAL2Map(oldNode.KramdownIAL)
-	newIAL := parse.IAL2Map(updatedNode.KramdownIAL)
-	for oldIALKey, oldIALVal := range oldIAL {
-		if strings.HasPrefix(oldIALKey, "custom-") {
-			newIAL[oldIALKey] = oldIALVal
-		}
-	}
-	updatedNode.KramdownIAL = parse.Map2IAL(newIAL)
-
 	cache.PutBlockIAL(updatedNode.ID, parse.IAL2Map(updatedNode.KramdownIAL))
 
 	// 替换为新节点