From 2cec0b17d3eb456c99fc19b5603935abc879789c Mon Sep 17 00:00:00 2001
From: xiaoqidun <xiaoqidun@gmail.com>
Date: Sun, 25 Oct 2026 20:39:50 +0800
Subject: [PATCH] =?UTF-8?q?feat(=E7=BC=96=E8=BE=91=E8=83=BD=E5=8A=9B):=20?=
 =?UTF-8?q?=E5=AE=8C=E5=96=84=E5=85=83=E6=95=B0=E6=8D=AE=E5=85=A8=E5=AD=97?=
 =?UTF-8?q?=E6=AE=B5=E5=B1=95=E7=A4=BA=E4=B8=8E=E7=BC=96=E8=BE=91?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 assets/webui/index.html   |  52 +++++++++--
 assets/webui/ofdgo.css    |  58 ++++++++++---
 assets/webui/ofdgo.js     |  89 ++++++++++++++-----
 internal/webui/webui.go   | 178 ++++++++++++++++++++------------------
 ofdgo_editor_documents.go |   9 +-
 ofdgo_editor_metadata.go  |  12 +--
 ofdgo_editor_package.go   |   2 +-
 ofdgo_meta.go             |   6 ++
 ofdgo_writer.go           |   7 +-
 9 files changed, 277 insertions(+), 136 deletions(-)

diff --git a/assets/webui/index.html b/assets/webui/index.html
index 865e134..3a43e08 100644
--- a/assets/webui/index.html
+++ b/assets/webui/index.html
@@ -489,10 +489,21 @@
 		<dialog id="infoPanel" class="form-dialog">
 			<form id="infoForm">
 				<h2 id="infoPanelTitle" class="form-title">文档信息</h2>
-				<label class="form-row"><span>标题</span><input id="infoTitle" type="text" autofocus></label>
-				<label class="form-row"><span>主题</span><input id="infoSubject" type="text"></label>
-				<label class="form-row"><span>作者</span><input id="infoAuthor" type="text"></label>
-				<details class="info-custom"><summary>扩展</summary><div id="infoCustomRows"></div><button id="infoCustomAdd" class="icon-button" type="button" title="添加字段">+</button></details>
+				<label class="form-row"><span>标题</span><textarea id="infoTitle" rows="1" autofocus></textarea></label>
+				<label class="form-row"><span>主题</span><textarea id="infoSubject" rows="1"></textarea></label>
+				<label class="form-row"><span>作者</span><textarea id="infoAuthor" rows="1"></textarea></label>
+				<label class="form-row"><span>摘要</span><textarea id="infoAbstract" rows="2"></textarea></label>
+				<details><summary>关键词</summary><div id="infoKeywordRows" class="info-rows"></div><button id="infoKeywordAdd" class="icon-button" type="button" title="添加词条">+</button></details>
+				<details><summary>更多信息</summary>
+					<label class="form-row"><span>标识</span><input id="infoDocId" type="text"></label>
+					<label class="form-row"><span>用途</span><input id="infoDocUsage" type="text"></label>
+					<label class="form-row"><span>封面路径</span><input id="infoCover" type="text"></label>
+					<label class="form-row"><span>创建日期</span><input id="infoCreationDate" type="text"></label>
+					<label class="form-row"><span>修改日期</span><input id="infoModDate" type="text"></label>
+					<label class="form-row"><span>制作软件</span><input id="infoCreator" type="text"></label>
+					<label class="form-row"><span>软件版本</span><input id="infoCreatorVersion" type="text"></label>
+				</details>
+				<details><summary>自定义</summary><div id="infoCustomRows" class="info-rows"></div><button id="infoCustomAdd" class="icon-button" type="button" title="添加字段">+</button></details>
 				<div class="form-actions"><div id="infoStatus" class="form-status"></div><button id="infoCancel" class="button" type="button">取消</button><button class="button" type="submit">确定</button></div>
 			</form>
 		</dialog>
@@ -823,23 +834,47 @@
 						<dd id="metaAuthor">-</dd>
 					</div>
 					<div hidden>
-						<dt>创建</dt>
+						<dt>摘要</dt>
+						<dd id="metaAbstract"></dd>
+					</div>
+					<div hidden>
+						<dt>关键词</dt>
+						<dd id="metaKeywords"></dd>
+					</div>
+					<div hidden>
+						<dt>标识</dt>
+						<dd id="metaDocId"></dd>
+					</div>
+					<div hidden>
+						<dt>用途</dt>
+						<dd id="metaDocUsage"></dd>
+					</div>
+					<div hidden>
+						<dt>封面路径</dt>
+						<dd id="metaCover"></dd>
+					</div>
+					<div hidden>
+						<dt>创建日期</dt>
 						<dd id="metaCreationDate"></dd>
 					</div>
 					<div hidden>
-						<dt>修改</dt>
+						<dt>修改日期</dt>
 						<dd id="metaModDate"></dd>
 					</div>
 					<div hidden>
-						<dt>软件</dt>
+						<dt>制作软件</dt>
 						<dd id="metaCreator"></dd>
 					</div>
+					<div hidden>
+						<dt>软件版本</dt>
+						<dd id="metaCreatorVersion"></dd>
+					</div>
 					<div>
 						<dt>类型</dt>
 						<dd id="metaType">-</dd>
 					</div>
 					<div>
-						<dt>版本</dt>
+						<dt>格式版本</dt>
 						<dd id="metaVersion">-</dd>
 					</div>
 					<div>
@@ -851,6 +886,7 @@
 						<dd id="metaFonts">0</dd>
 					</div>
 				</dl>
+				<dl id="metaCustomData" class="meta-list" hidden></dl>
 				<details id="conversionNotice" class="conversion-notice" hidden>
 					<summary>提示</summary>
 					<div id="conversionWarnings" class="panel-detail"></div>
diff --git a/assets/webui/ofdgo.css b/assets/webui/ofdgo.css
index c0cd152..d2bd6fc 100644
--- a/assets/webui/ofdgo.css
+++ b/assets/webui/ofdgo.css
@@ -1521,7 +1521,7 @@ button:not(:disabled):hover {
 	outline-offset: 2px;
 }
 
-.info-custom-row input,
+.info-rows textarea,
 .gradient-stop-row input[type="number"],
 .structure-attribute > input,
 .print-options select,
@@ -1530,7 +1530,8 @@ button:not(:disabled):hover {
 .form-row input[type="number"],
 .form-row input[type="file"],
 .form-row select,
-.form-row textarea {
+.form-row textarea,
+.info-rows textarea {
 	width: 100%;
 	min-width: 0;
 	height: var(--control-height);
@@ -1567,19 +1568,37 @@ button:not(:disabled):hover {
 	margin-bottom: 12px;
 }
 
-#infoCustomRows {
+#infoPanel {
+	width: 480px;
+}
+
+#infoPanel .form-row {
+	grid-template-columns: 4em minmax(0, 1fr);
+}
+
+#infoPanel .form-row > span {
+	text-align-last: justify;
+	white-space: nowrap;
+}
+
+.info-rows {
 	max-height: 240px;
 	overflow-y: auto;
 }
 
-.info-custom-row {
+.info-custom-row,
+.info-keyword-row {
 	display: grid;
 	grid-template-columns: minmax(0, 1fr) minmax(0, 2fr) var(--control-height);
 	gap: 8px;
 	margin: 8px 0;
 }
 
-#infoCustomRows > :first-child {
+.info-keyword-row {
+	grid-template-columns: minmax(0, 1fr) var(--control-height);
+}
+
+.info-rows > :first-child {
 	margin-top: 0;
 }
 
@@ -1618,7 +1637,7 @@ button:not(:disabled):hover {
 	width: 100%;
 }
 
-#infoCustomRows :focus-visible,
+.info-rows :focus-visible,
 #gradientStops :focus-visible {
 	outline-offset: -2px;
 }
@@ -3744,24 +3763,41 @@ audio.page-media {
 
 .meta-list {
 	display: grid;
-	gap: 12px;
+	gap: 7px;
 	margin: 0;
+	font-size: 12px;
+	line-height: 1.5;
 }
 
-.meta-list div {
+.meta-list > div {
 	display: grid;
-	gap: 3px;
+	grid-template-columns: 4em minmax(0, 1fr);
+	align-items: start;
+	gap: 7px;
 }
 
 .meta-list dt {
-	font-size: 12px;
 	color: var(--text-muted);
+	overflow-wrap: anywhere;
+}
+
+.meta-list:not(#metaCustomData) dt {
+	text-align-last: justify;
+	white-space: nowrap;
 }
 
 .meta-list dd {
 	margin: 0;
 	overflow-wrap: anywhere;
-	line-height: 1.35;
+	white-space: pre-wrap;
+}
+
+#metaCustomData:not([hidden]) {
+	margin-top: 12px;
+}
+
+#metaKeywords > span {
+	display: block;
 }
 
 .font-panel,
diff --git a/assets/webui/ofdgo.js b/assets/webui/ofdgo.js
index a1c5c86..a2c45ea 100644
--- a/assets/webui/ofdgo.js
+++ b/assets/webui/ofdgo.js
@@ -15,6 +15,7 @@ const SCROLL_SEGMENT_SIZE = 1000000;
 const OBJECT_CLIPBOARD_TYPE = "application/x-ofdgo-objects";
 const RESOURCE_KINDS = [["Font", "字体"], ["Image", "图片"], ["Audio", "音频"], ["Video", "视频"], ["Attachment", "附件"], ["ColorSpace", "色彩"], ["DrawParam", "样式"]];
 const SETTINGS_KINDS = [["bookmarks", "书签"], ["actions", "动作"], ["templates", "模板"], ["layers", "图层"], ["extensions", "扩展"]];
+const INFO_FIELDS = ["title", "author", "subject", "abstract", "docId", "docUsage", "cover", "creationDate", "modDate", "creator", "creatorVersion"];
 const STATUS = {
 	ready: "选择 OFD、PDF 文件",
 	opening: "正在打开文档",
@@ -346,6 +347,16 @@ const el = {
 	infoCustomAdd: document.querySelector("#infoCustomAdd"),
 	infoAuthor: document.querySelector("#infoAuthor"),
 	infoSubject: document.querySelector("#infoSubject"),
+	infoAbstract: document.querySelector("#infoAbstract"),
+	infoDocId: document.querySelector("#infoDocId"),
+	infoDocUsage: document.querySelector("#infoDocUsage"),
+	infoCover: document.querySelector("#infoCover"),
+	infoCreationDate: document.querySelector("#infoCreationDate"),
+	infoModDate: document.querySelector("#infoModDate"),
+	infoCreator: document.querySelector("#infoCreator"),
+	infoCreatorVersion: document.querySelector("#infoCreatorVersion"),
+	infoKeywordRows: document.querySelector("#infoKeywordRows"),
+	infoKeywordAdd: document.querySelector("#infoKeywordAdd"),
 	infoCancel: document.querySelector("#infoCancel"),
 	infoStatus: document.querySelector("#infoStatus"),
 	paragraphPanel: document.querySelector("#paragraphPanel"),
@@ -589,10 +600,17 @@ const el = {
 	conversionNotice: document.querySelector("#conversionNotice"),
 	conversionWarnings: document.querySelector("#conversionWarnings"),
 	metaSubject: document.querySelector("#metaSubject"),
+	metaAbstract: document.querySelector("#metaAbstract"),
+	metaDocId: document.querySelector("#metaDocId"),
+	metaDocUsage: document.querySelector("#metaDocUsage"),
+	metaCover: document.querySelector("#metaCover"),
+	metaKeywords: document.querySelector("#metaKeywords"),
+	metaCustomData: document.querySelector("#metaCustomData"),
 	metaAuthor: document.querySelector("#metaAuthor"),
 	metaCreationDate: document.querySelector("#metaCreationDate"),
 	metaModDate: document.querySelector("#metaModDate"),
 	metaCreator: document.querySelector("#metaCreator"),
+	metaCreatorVersion: document.querySelector("#metaCreatorVersion"),
 	metaType: document.querySelector("#metaType"),
 	metaVersion: document.querySelector("#metaVersion"),
 	metaSignatures: document.querySelector("#metaSignatures"),
@@ -1004,43 +1022,56 @@ editorClick(el.documentDownButton, () => {
 editorClick(el.infoButton, () => {
 	state.infoDocumentIndex = managedDocumentIndex();
 	const info = state.documentManagement?.entries?.[state.infoDocumentIndex] || state.doc;
-	for (const key of ["Title", "Author", "Subject"]) el[`info${key}`].value = info[key.toLowerCase()] || "";
+	for (const key of INFO_FIELDS) setInfoInput(el[`info${key[0].toUpperCase()}${key.slice(1)}`], info[key] || "");
+	el.infoKeywordRows.replaceChildren();
+	for (const keyword of info.keywords || []) addInfoRow(el.infoKeywordRows, [keyword]);
 	el.infoCustomRows.replaceChildren();
-	for (const [index, field] of (info.customData || []).entries()) addCustomDataRow(field, index);
+	for (const [index, field] of (info.customData || []).entries()) addInfoRow(el.infoCustomRows, [field.Name, field.Value], index);
 	el.infoStatus.textContent = "";
 	el.infoPanel.showModal();
 });
 el.infoCancel.addEventListener("click", () => el.infoPanel.close());
 el.infoPanel.addEventListener("cancel", event => { if (el.infoForm.inert) event.preventDefault(); });
 el.infoPanel.addEventListener("close", () => { if (!el.infoPanel.open) state.infoDocumentIndex = null; });
-el.infoCustomAdd.addEventListener("click", () => addCustomDataRow());
+el.infoKeywordAdd.addEventListener("click", () => addInfoRow(el.infoKeywordRows, [""]));
+el.infoCustomAdd.addEventListener("click", () => addInfoRow(el.infoCustomRows, ["", ""]));
 el.infoForm.addEventListener("submit", async event => {
 	event.preventDefault();
-	const fields = [...el.infoCustomRows.children].map(row => ({Name: row.children[0].value, Value: row.children[1].value, Source: row.sourceIndex}));
-	const args = [el.infoTitle.value, el.infoAuthor.value, el.infoSubject.value, JSON.stringify(fields)];
-	if (state.infoDocumentIndex !== null) args.push(state.infoDocumentIndex);
-	if (await changeDocument("ofdgoUpdateInfo", null, ...args)) el.infoPanel.close();
+	const info = Object.fromEntries(INFO_FIELDS.map(key => [key, infoInputValue(el[`info${key[0].toUpperCase()}${key.slice(1)}`])]));
+	info.keywords = [...el.infoKeywordRows.children].map(row => infoInputValue(row.children[0]));
+	info.customData = [...el.infoCustomRows.children].map(row => ({Name: infoInputValue(row.children[0]), Value: infoInputValue(row.children[1]), Source: row.sourceIndex}));
+	if (await changeDocument("ofdgoUpdateInfo", null, JSON.stringify(info), state.infoDocumentIndex)) el.infoPanel.close();
 });
 
-function addCustomDataRow(field = {Name: "", Value: ""}, sourceIndex) {
+function setInfoInput(input, value) {
+	input.defaultValue = value;
+	input.value = value;
+	input.dataset.initialValue = input.value;
+}
+
+function infoInputValue(input) {
+	return input.value === input.dataset.initialValue ? input.defaultValue : input.value;
+}
+
+function addInfoRow(container, values, sourceIndex) {
 	const row = document.createElement("div");
 	row.sourceIndex = sourceIndex;
-	row.className = "info-custom-row";
-	for (const [key, label] of [["Name", "名称"], ["Value", "内容"]]) {
-		const input = document.createElement("input");
-		input.type = "text";
-		input.value = field[key];
-		input.placeholder = label;
+	row.className = values.length === 1 ? "info-keyword-row" : "info-custom-row";
+	for (const [index, value] of values.entries()) {
+		const input = document.createElement("textarea");
+		input.rows = 1;
+		setInfoInput(input, value);
+		input.placeholder = values.length === 1 ? "关键词" : index === 0 ? "名称" : "内容";
 		row.append(input);
 	}
 	const remove = document.createElement("button");
 	remove.type = "button";
 	remove.className = "icon-button";
 	remove.textContent = "×";
-	remove.title = "删除字段";
+	remove.title = values.length === 1 ? "删除词条" : "删除字段";
 	remove.addEventListener("click", () => row.remove());
 	row.append(remove);
-	el.infoCustomRows.append(row);
+	container.append(row);
 }
 el.annotationClose.addEventListener("click", () => el.annotationNote.close());
 el.annotationNote.addEventListener("close", () => { state.annotationEdit = null; });
@@ -4761,8 +4792,7 @@ async function changeDocument(name, item, ...args) {
 		}
 		setEditorInfo(doc);
 		if (name === "ofdgoUpdateInfo") {
-			Object.assign(state.doc, { title: doc.title, author: doc.author, subject: doc.subject, customData: doc.customData,
-				documents: doc.documents, documentIndex: doc.documentIndex });
+			for (const key of [...INFO_FIELDS, "keywords", "customData", "documents", "documentIndex"]) state.doc[key] = doc[key];
 			renderMeta();
 			updateControls();
 			rememberEditorView(before, revision);
@@ -12610,14 +12640,33 @@ function renderMeta(keepDetails = false) {
 	el.metaTitle.textContent = doc.title || "-";
 	el.metaAuthor.textContent = doc.author || "-";
 	for (const [field, value] of [
-		[el.metaSubject, (doc.subject || "").trim()],
+		[el.metaSubject, doc.subject || ""],
+		[el.metaAbstract, doc.abstract || ""],
+		[el.metaDocId, doc.docId || ""],
+		[el.metaDocUsage, doc.docUsage || ""],
+		[el.metaCover, doc.cover || ""],
 		[el.metaCreationDate, formatDocumentTime(doc.creationDate)],
 		[el.metaModDate, formatDocumentTime(doc.modDate)],
-		[el.metaCreator, [doc.creator, doc.creatorVersion].filter(Boolean).join(" ")],
+		[el.metaCreator, doc.creator || ""],
+		[el.metaCreatorVersion, doc.creatorVersion || ""],
 	]) {
 		field.textContent = value;
 		field.parentElement.hidden = !value;
 	}
+	el.metaKeywords.replaceChildren(...(doc.keywords || []).map(keyword => {
+		const item = document.createElement("span");
+		item.textContent = keyword || "-";
+		return item;
+	}));
+	el.metaKeywords.parentElement.hidden = !doc.keywords?.length;
+	el.metaCustomData.replaceChildren(...(doc.customData || []).map(field => {
+		const row = document.createElement("div"), name = document.createElement("dt"), value = document.createElement("dd");
+		name.textContent = field.Name || "-";
+		value.textContent = field.Value || "-";
+		row.append(name, value);
+		return row;
+	}));
+	el.metaCustomData.hidden = !doc.customData?.length;
 	el.metaType.textContent = doc.docType || "-";
 	el.metaVersion.textContent = doc.version || "-";
 	el.metaFonts.textContent = String(doc.fontCount || 0);
diff --git a/internal/webui/webui.go b/internal/webui/webui.go
index 6fc795f..81271cf 100644
--- a/internal/webui/webui.go
+++ b/internal/webui/webui.go
@@ -82,36 +82,61 @@ type pageBoxInfo struct {
 	valid bool
 }
 
+// DocumentMetadata 文档描述，供信息展示与包内文档管理共用
+type DocumentMetadata struct {
+	DocID          string             `json:"docId"`
+	Title          string             `json:"title"`
+	Author         string             `json:"author"`
+	Subject        string             `json:"subject"`
+	Abstract       string             `json:"abstract"`
+	CreationDate   string             `json:"creationDate"`
+	ModDate        string             `json:"modDate"`
+	DocUsage       string             `json:"docUsage"`
+	Cover          string             `json:"cover"`
+	Keywords       []string           `json:"keywords,omitempty"`
+	Creator        string             `json:"creator"`
+	CreatorVersion string             `json:"creatorVersion"`
+	CustomData     []ofdgo.CustomData `json:"customData,omitempty"`
+}
+
+// documentMetadata 复制文档描述，集合字段与读取器及编辑器互不影响
+// 入参: info 文档描述
+// 返回: DocumentMetadata 界面元数据
+func documentMetadata(info ofdgo.DocInfo) DocumentMetadata {
+	metadata := DocumentMetadata{
+		DocID: info.DocID, Title: info.Title, Author: info.Author, Subject: info.Subject, Abstract: info.Abstract,
+		CreationDate: info.CreationDate, ModDate: info.ModDate, DocUsage: info.DocUsage, Cover: info.Cover,
+		Keywords: slices.Clone(info.Keywords), Creator: info.Creator, CreatorVersion: info.CreatorVersion,
+	}
+	if info.CustomDatas != nil {
+		metadata.CustomData = slices.Clone(info.CustomDatas.CustomData)
+	}
+	return metadata
+}
+
 // DocumentInfo 文档信息
 type DocumentInfo struct {
-	DocumentIndex   int                `json:"documentIndex"`
-	DocumentVersion string             `json:"documentVersion"`
-	VersionCount    int                `json:"versionCount"`
-	Documents       []DocumentEntry    `json:"documents,omitempty"`
-	Encryption      EncryptionInfo     `json:"encryption"`
-	Version         string             `json:"version"`
-	DocType         string             `json:"docType"`
-	Title           string             `json:"title"`
-	Author          string             `json:"author"`
-	Subject         string             `json:"subject"`
-	CustomData      []ofdgo.CustomData `json:"customData,omitempty"`
-	CreationDate    string             `json:"creationDate"`
-	ModDate         string             `json:"modDate"`
-	Creator         string             `json:"creator"`
-	CreatorVersion  string             `json:"creatorVersion,omitempty"`
-	PageCount       int                `json:"pageCount"`
-	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"`
-	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"`
+	DocumentMetadata
+	DocumentIndex   int               `json:"documentIndex"`
+	DocumentVersion string            `json:"documentVersion"`
+	VersionCount    int               `json:"versionCount"`
+	Documents       []DocumentEntry   `json:"documents,omitempty"`
+	Encryption      EncryptionInfo    `json:"encryption"`
+	Version         string            `json:"version"`
+	DocType         string            `json:"docType"`
+	PageCount       int               `json:"pageCount"`
+	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"`
+	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"`
 }
 
 // VersionEntry 版本管理列表中的入口，空ID表示主文档
@@ -124,14 +149,11 @@ type VersionEntry struct {
 
 // DocumentEntry 包内文档入口，管理列表按需补充元数据和页数
 type DocumentEntry struct {
-	Index      int                `json:"index"`
-	Title      string             `json:"title"`
-	Root       string             `json:"root"`
-	ID         string             `json:"id"`
-	Author     string             `json:"author,omitempty"`
-	Subject    string             `json:"subject,omitempty"`
-	CustomData []ofdgo.CustomData `json:"customData,omitempty"`
-	PageCount  *int               `json:"pageCount,omitempty"`
+	DocumentMetadata
+	Index     int    `json:"index"`
+	Root      string `json:"root"`
+	ID        string `json:"id"`
+	PageCount *int   `json:"pageCount,omitempty"`
 }
 
 // DocumentDetails 不含页面数组的文档补充信息
@@ -647,19 +669,10 @@ func (s *Session) Summary() DocumentInfo {
 	info.DocumentVersion, _ = s.Reader.DocumentVersionID()
 	info.VersionCount, _ = s.Reader.DocumentVersionCount()
 	for index, body := range s.Reader.OFD.DocBody {
-		info.Documents = append(info.Documents, DocumentEntry{Index: index, Title: body.DocInfo.Title, Root: body.DocRoot, ID: body.DocInfo.DocID})
+		info.Documents = append(info.Documents, DocumentEntry{Index: index, DocumentMetadata: DocumentMetadata{Title: body.DocInfo.Title}, Root: body.DocRoot, ID: body.DocInfo.DocID})
 	}
 	if docInfo, err := s.Reader.DocInfo(); err == nil && docInfo != nil {
-		info.Title = docInfo.Title
-		info.Author = docInfo.Author
-		info.Subject = docInfo.Subject
-		if docInfo.CustomDatas != nil {
-			info.CustomData = append([]ofdgo.CustomData(nil), docInfo.CustomDatas.CustomData...)
-		}
-		info.CreationDate = docInfo.CreationDate
-		info.ModDate = docInfo.ModDate
-		info.Creator = docInfo.Creator
-		info.CreatorVersion = docInfo.CreatorVersion
+		info.DocumentMetadata = documentMetadata(*docInfo)
 	}
 	if fonts, err := s.Reader.Fonts(); err == nil {
 		for _, font := range fonts {
@@ -5599,7 +5612,7 @@ func (e *businessEngine) loadImport(args []platformValue) (any, error) {
 	entries := make([]DocumentEntry, reader.DocumentCount())
 	signed := doc.Signatures != ""
 	for index, body := range reader.OFD.DocBody {
-		entries[index] = DocumentEntry{Index: index, Title: body.DocInfo.Title, Root: body.DocRoot, ID: body.DocInfo.DocID}
+		entries[index] = DocumentEntry{Index: index, DocumentMetadata: DocumentMetadata{Title: body.DocInfo.Title}, Root: body.DocRoot, ID: body.DocInfo.DocID}
 		signed = signed || body.Signatures != ""
 	}
 	return map[string]any{"pageCount": len(doc.Pages.Page), "signed": doc.Signatures != "", "documentsSigned": signed, "encrypted": reader.Encryption().Encrypted, "documents": entries, "documentCount": len(entries)}, nil
@@ -5735,50 +5748,52 @@ func (e *businessEngine) createDocument(args []platformValue) (any, error) {
 	return e.previewEditor(editor, args[3].Bool())
 }
 
-// updateInfo 修改文档信息和自定义字段，保留其他元数据及创建程序标识
-// 入参: args 标题、作者、主题、可选自定义字段JSON及文档索引
+// updateInfo 修改完整文档描述，按字段来源保留自定义内容的扩展属性
+// 入参: args 文档描述JSON及文档索引，未提交字段保持原值
 // 返回: any 编辑状态, error 错误信息
 func (e *businessEngine) updateInfo(args []platformValue) (any, error) {
 	return e.changeObjects(func() error {
-		if len(args) < 3 || len(args) > 5 {
+		if len(args) != 2 {
 			return fmt.Errorf("invalid document info arguments")
 		}
-		index := e.currentEditor.DocumentIndex()
-		if len(args) > 4 {
-			index = args[4].Int()
-		}
+		index := args[1].Int()
 		info, err := e.currentEditor.DocumentInfo(index)
 		if err != nil {
 			return err
 		}
-		info.Title, info.Author, info.Subject = args[0].String(), args[1].String(), args[2].String()
-		if len(args) > 3 {
-			var submitted []struct {
+		var submitted struct {
+			ofdgo.DocInfo
+			CustomData []struct {
 				ofdgo.CustomData
 				Source *int
 			}
-			if err := json.Unmarshal([]byte(args[3].String()), &submitted); err != nil {
-				return err
-			}
-			var previous []ofdgo.CustomData
-			if info.CustomDatas != nil {
-				previous = info.CustomDatas.CustomData
-			}
-			fields := make([]ofdgo.CustomData, len(submitted))
-			for i, field := range submitted {
-				if field.Source != nil {
-					if *field.Source < 0 || *field.Source >= len(previous) {
-						return fmt.Errorf("invalid custom data source")
-					}
-					fields[i] = previous[*field.Source]
-				}
-				fields[i].Name, fields[i].Value = field.Name, field.Value
-			}
-			if !slices.Equal(previous, fields) {
-				info.CustomDatas = &ofdgo.CustomDatas{CustomData: fields}
-			}
 		}
-		return e.currentEditor.SetDocumentInfo(index, info)
+		submitted.DocInfo = info
+		if err := json.Unmarshal([]byte(args[0].String()), &submitted); err != nil {
+			return err
+		}
+		var previous []ofdgo.CustomData
+		if info.CustomDatas != nil {
+			previous = info.CustomDatas.CustomData
+		}
+		fields := make([]ofdgo.CustomData, len(submitted.CustomData))
+		for i, field := range submitted.CustomData {
+			if field.Source != nil {
+				if *field.Source < 0 || *field.Source >= len(previous) {
+					return fmt.Errorf("invalid custom data source")
+				}
+				fields[i] = previous[*field.Source]
+			}
+			fields[i].Name, fields[i].Value = field.Name, field.Value
+		}
+		submitted.CustomDatas = info.CustomDatas
+		if submitted.CustomData != nil && !slices.Equal(previous, fields) {
+			submitted.CustomDatas = &ofdgo.CustomDatas{CustomData: fields}
+		}
+		if slices.Equal(info.Keywords, submitted.Keywords) {
+			submitted.Keywords = info.Keywords
+		}
+		return e.currentEditor.SetDocumentInfo(index, submitted.DocInfo)
 	})
 }
 
@@ -5798,10 +5813,7 @@ func (e *businessEngine) packageDocuments(args []platformValue) (any, error) {
 		entry := &entries[i]
 		body := e.currentSession.Reader.OFD.DocBody[i]
 		entry.Index, entry.Root, entry.ID = i, body.DocRoot, info.DocID
-		entry.Title, entry.Author, entry.Subject = info.Title, info.Author, info.Subject
-		if info.CustomDatas != nil {
-			entry.CustomData = info.CustomDatas.CustomData
-		}
+		entry.DocumentMetadata = documentMetadata(info)
 		if i == e.currentEditor.DocumentIndex() {
 			count := e.currentEditor.PageCount()
 			entry.PageCount = &count
diff --git a/ofdgo_editor_documents.go b/ofdgo_editor_documents.go
index 3142fdc..ea6bfa6 100644
--- a/ofdgo_editor_documents.go
+++ b/ofdgo_editor_documents.go
@@ -415,7 +415,7 @@ func (e *Editor) editDocumentSnapshot(ctx context.Context, reader *Reader, edit
 	return nil
 }
 
-// adoptDocumentReader 接入已加载的编辑入口，跨文档或版本时重建页面与资源状态
+// adoptDocumentReader 接入已加载的编辑入口，同文档重建自定义字段来源，跨文档或版本时重建页面与资源状态
 // 入参: ctx 取消上下文, reader 不拥有输入文件的独立阅读器
 // 返回: error 编辑器初始化错误
 func (e *Editor) adoptDocumentReader(ctx context.Context, reader *Reader) error {
@@ -441,6 +441,13 @@ func (e *Editor) adoptDocumentReader(ctx context.Context, reader *Reader) error
 				source.structureStarts[index] = starts
 			}
 		}
+		source.info.CustomDatas = cloneEditorData(reader.OFD.DocBody[reader.documentIndex].DocInfo.CustomDatas)
+		if source.info.CustomDatas != nil {
+			for i := range source.info.CustomDatas.CustomData {
+				source.info.CustomDatas.CustomData[i].sourceIndex = i + 1
+			}
+		}
+		e.Info.CustomDatas = cloneEditorData(source.info.CustomDatas)
 		e.source = &source
 	} else {
 		next, err := reader.EditorContext(ctx)
diff --git a/ofdgo_editor_metadata.go b/ofdgo_editor_metadata.go
index 6e8162c..ed661d4 100644
--- a/ofdgo_editor_metadata.go
+++ b/ofdgo_editor_metadata.go
@@ -45,6 +45,7 @@ func editorUpdateInfoXML(data []byte, docID string, index int, before, after Doc
 		{"DocID", before.DocID, after.DocID}, {"Title", before.Title, after.Title}, {"Author", before.Author, after.Author},
 		{"Subject", before.Subject, after.Subject}, {"Abstract", before.Abstract, after.Abstract},
 		{"CreationDate", before.CreationDate, after.CreationDate}, {"ModDate", before.ModDate, after.ModDate},
+		{"DocUsage", before.DocUsage, after.DocUsage}, {"Cover", before.Cover, after.Cover},
 		{"Creator", before.Creator, after.Creator}, {"CreatorVersion", before.CreatorVersion, after.CreatorVersion},
 	} {
 		if field[1] != field[2] {
@@ -138,17 +139,6 @@ func editorKeywords(data []byte, info *editorXML, values []string) ([]byte, erro
 	return editorPatchXML(data, patches), nil
 }
 
-// editorCreatorXML 更新指定文档的制作软件，移除原软件版本，保留其余根索引内容
-// 入参: data 当前根索引XML, docID 缺少文档描述时使用的标识, index 文档索引
-// 返回: []byte 修改后的XML, error 解析错误
-func editorCreatorXML(data []byte, docID string, index int) ([]byte, error) {
-	data, info, err := editorDocInfoXML(data, docID, index)
-	if err != nil {
-		return nil, err
-	}
-	return editorXMLSetText(data, info, [][2]string{{"Creator", ofdCreator}, {"CreatorVersion", ""}})
-}
-
 // editorDocInfoXML 获取文档描述，修改缺少描述的源文件时补建标准容器及标识
 // 入参: data 根索引XML, docID 缺少文档描述时使用的标识, index 文档索引
 // 返回: []byte 根索引XML, *editorXML 描述节点, error 解析错误
diff --git a/ofdgo_editor_package.go b/ofdgo_editor_package.go
index 21e5c08..9a4ae8c 100644
--- a/ofdgo_editor_package.go
+++ b/ofdgo_editor_package.go
@@ -688,7 +688,7 @@ func (e *Editor) writeSource(writer io.Writer, fonts map[string][]byte, progress
 				return 0, err
 			}
 		}
-		data, err = editorCreatorXML(data, e.source.fallbackDocID, reader.documentIndex)
+		data, _, err = editorDocInfoXML(data, e.source.fallbackDocID, reader.documentIndex)
 		if err != nil {
 			return 0, err
 		}
diff --git a/ofdgo_meta.go b/ofdgo_meta.go
index 4fceda0..e31c320 100644
--- a/ofdgo_meta.go
+++ b/ofdgo_meta.go
@@ -49,6 +49,8 @@ type DocInfo struct {
 	Abstract       string       `xml:"Abstract"`
 	CreationDate   string       `xml:"CreationDate"`
 	ModDate        string       `xml:"ModDate"`
+	DocUsage       string       `xml:"DocUsage"`
+	Cover          string       `xml:"Cover"`
 	Keywords       Keywords     `xml:"Keywords,omitempty"`
 	Creator        string       `xml:"Creator"`
 	CreatorVersion string       `xml:"CreatorVersion"`
@@ -133,6 +135,10 @@ func (info *DocInfo) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error
 			target = &info.CreationDate
 		case "ModDate":
 			target = &info.ModDate
+		case "DocUsage":
+			target = &info.DocUsage
+		case "Cover":
+			target = &info.Cover
 		case "Keywords":
 			target = &info.Keywords
 		case "Creator":
diff --git a/ofdgo_writer.go b/ofdgo_writer.go
index c064fad..a8182d8 100644
--- a/ofdgo_writer.go
+++ b/ofdgo_writer.go
@@ -680,6 +680,7 @@ func (e *Editor) writePartsWithPages(ctx context.Context, write func(string, []b
 			{"DocID", e.Info.DocID}, {"Title", e.Info.Title}, {"Author", e.Info.Author},
 			{"Subject", e.Info.Subject}, {"Abstract", e.Info.Abstract},
 			{"CreationDate", e.Info.CreationDate}, {"ModDate", e.Info.ModDate},
+			{"DocUsage", e.Info.DocUsage}, {"Cover", e.Info.Cover},
 		} {
 			if field[1] != "" {
 				x.text(field[0], field[1])
@@ -692,7 +693,11 @@ func (e *Editor) writePartsWithPages(ctx context.Context, write func(string, []b
 			}
 			x.end("Keywords")
 		}
-		x.text("Creator", ofdCreator)
+		for _, field := range [][2]string{{"Creator", e.Info.Creator}, {"CreatorVersion", e.Info.CreatorVersion}} {
+			if field[1] != "" {
+				x.text(field[0], field[1])
+			}
+		}
 		if e.Info.CustomDatas != nil && len(e.Info.CustomDatas.CustomData) != 0 {
 			x.start("CustomDatas", nil)
 			for _, item := range e.Info.CustomDatas.CustomData {