feat(电子公文): 支持标引解析与原文定位

internal/webui/wasm.go

@@ -207,6 +207,7 @@ func RunWASM() {
 	registerCallback("ofdgoVerifySignatures", verifySignatures)
 	registerCallback("ofdgoRenderPage", renderPage)
 	registerCallback("ofdgoOutlineLinks", outlineLinks)
+	registerCallback("ofdgoStructureTargets", structureTargets)
 	registerCallback("ofdgoOpenLinks", openLinks)
 	registerCallback("ofdgoRenderBackends", renderBackends)
 	registerCallback("ofdgoSVGFontData", svgFontData)
@@ -922,6 +923,19 @@ func outlineLinks(args []js.Value) (any, error) {
 	return linkResults(links)
 }
 
+// structureTargets 查询当前文档标引节点的原文与定位范围
+// 入参: args 标引清单索引和节点路径
+// 返回: any 标引目标, error 参数或解析错误
+func structureTargets(args []js.Value) (any, error) {
+	if currentSession == nil {
+		return nil, fmt.Errorf("ofd document is not opened")
+	}
+	if len(args) != 2 {
+		return nil, fmt.Errorf("missing structure path")
+	}
+	return currentSession.Renderer.StructureTargets(args[0].Int(), indexesFromJS(args[1]))
+}
+
 // linkResults 将库层动作目标转换为浏览器数据
 // 入参: source 动作目标
 // 返回: []any 浏览器动作数据, error 附件读取错误

internal/webui/webui.go

@@ -97,6 +97,8 @@ type DocumentInfo struct {
 	Signatures      []SignatureInfo    `json:"signatures"`
 	Pages           []PageInfo         `json:"pages"`
 	Outlines        []OutlineInfo      `json:"outlines,omitempty"`
+	Structures      []ofdgo.Structure  `json:"structures,omitempty"`
+	StructureError  string             `json:"structureError,omitempty"`
 	DetailsPending  bool               `json:"detailsPending,omitempty"`
 }
 
@@ -122,13 +124,15 @@ type DocumentEntry struct {
 
 // DocumentDetails 不含页面数组的文档补充信息
 type DocumentDetails struct {
-	FontCount       int              `json:"fontCount"`
-	SignatureCount  int              `json:"signatureCount"`
-	SignatureError  string           `json:"signatureError,omitempty"`
-	AttachmentError string           `json:"attachmentError,omitempty"`
-	Attachments     []AttachmentInfo `json:"attachments,omitempty"`
-	Fonts           []FontInfo       `json:"fonts"`
-	Signatures      []SignatureInfo  `json:"signatures"`
+	Structures      []ofdgo.Structure `json:"structures,omitempty"`
+	StructureError  string            `json:"structureError,omitempty"`
+	FontCount       int               `json:"fontCount"`
+	SignatureCount  int               `json:"signatureCount"`
+	SignatureError  string            `json:"signatureError,omitempty"`
+	AttachmentError string            `json:"attachmentError,omitempty"`
+	Attachments     []AttachmentInfo  `json:"attachments,omitempty"`
+	Fonts           []FontInfo        `json:"fonts"`
+	Signatures      []SignatureInfo   `json:"signatures"`
 }
 
 // OutlineInfo 目录节点信息
@@ -513,10 +517,15 @@ func (s *Session) Summary() DocumentInfo {
 	return info
 }
 
-// Details 获取无需逐页扫描的附件、签名及字体匹配结果
+// Details 获取无需逐页扫描的标引、附件、签名及字体匹配结果
 // 返回: DocumentDetails 文档补充信息
 func (s *Session) Details() DocumentDetails {
 	info := DocumentDetails{}
+	if structures, err := s.Reader.Structure(); err == nil {
+		info.Structures = structures
+	} else {
+		info.StructureError = err.Error()
+	}
 	if attachments, err := s.Reader.Attachments(); err == nil {
 		for _, attachment := range attachments {
 			if attachment.Visible || s.editing {
@@ -551,6 +560,8 @@ func (s *Session) Details() DocumentDetails {
 func (s *Session) Info() DocumentInfo {
 	info := s.Summary()
 	details := s.Details()
+	info.Structures = details.Structures
+	info.StructureError = details.StructureError
 	info.Attachments = details.Attachments
 	info.AttachmentError = details.AttachmentError
 	info.Signatures = details.Signatures