升级为0.0.6

chrome/content/scripts/delitem.js

@@ -139,5 +139,97 @@ Zotero.DelItem = {
             } //2 if
 
         } ;
-    }
-}
+    },
+
+    // 检查附件是否存在函数
+    checkItemAtt: function (item) { 
+        if (item && !item.isNote()) {
+            if (item.isRegularItem()) { // not an attachment already
+                let attachmentIDs = item.getAttachments();
+                for (let id of attachmentIDs) {
+                    let attachment = Zotero.Items.get(id);
+                    var attType = attachment.attachmentContentType;
+                }
+            }
+            if (item.isAttachment()) {
+                 var attType =  item.attachmentContentType;
+                }
+            }  
+
+
+            if (attType != undefined ) {
+                return true;} else {
+                    return false;}
+    },
+
+    // 检查快照是否存在函数
+    checkItemSnap: function (item) {
+        if (item && !item.isNote()) {
+            if (item.isRegularItem()) { // not an attachment already
+                let attachmentIDs = item.getAttachments();
+                for (let id of attachmentIDs) {
+                    let attachment = Zotero.Items.get(id);
+                    var attType = attachment.attachmentContentType;
+                }
+            }
+            if (item.isAttachment()) {
+                 var attType =  item.attachmentContentType;
+                }
+            }  
+
+
+            if (attType == 'text/html' ) {
+                return true;} else {
+                    return false;}
+    },
+
+    // 是否显示菜单函数
+    displayMenuitem: function () { // 如果无附件则不显示菜单
+            var pane = Services.wm.getMostRecentWindow("navigator:browser")
+                .ZoteroPane;
+            var items = pane.getSelectedItems();
+            //Zotero.debug("**Jasminum selected item length: " + items.length);
+            var showMenuAtt = items.some((item) => Zotero.DelItem.checkItemAtt(item));  // 检查附件
+            var showMenuSnap = items.some((item) => Zotero.DelItem.checkItemSnap(item));  // 检查快照
+
+            //pane.document.getElementById("id-delitem-separator").hidden = !( // 分隔条是否出现
+            //    showMenuAtt ||
+             //   showMenuSnap);
+
+            pane.document.getElementById( //总菜单
+                "zotero-itemmenu-delitem-namehandler"
+                ).disabled = !( // 总菜单是否可用
+                    showMenuAtt ||
+                    showMenuSnap);
+            pane.document.getElementById( //删除条目和附件
+                "zotero-itemmenu-delitem"
+                ).disabled = !( // 删除条目和附件是否可用
+                    showMenuAtt ||
+                    showMenuSnap);
+            pane.document.getElementById( // 仅删除附件菜单
+                 "zotero-itemmenu-delatt"
+                 ).disabled = !showMenuAtt; // 仅删除附件菜单是否可用
+
+            pane.document.getElementById( // 仅删除快照菜单
+                 "zotero-itemmenu-delsnap"
+                 ).disabled = !showMenuSnap;// 仅删除快照是否可用
+
+    },
+};
+
+window.addEventListener(
+    "load",
+    function (e) {
+        if (window.ZoteroPane) {
+            var doc = window.ZoteroPane.document;
+            // add event listener for menu items
+            doc.getElementById("zotero-itemmenu").addEventListener(
+                "popupshowing",
+                Zotero.DelItem.displayMenuitem,
+                false
+            );
+        }
+    },
+    false
+);
+

chrome/locale/zh-CN/overlay.dtd

@@ -2,4 +2,4 @@
 <!ENTITY zotero.delitem.delitem.label "删除附件和条目">
 <!ENTITY zotero.delitem.delitems.label "删除分类条目包括附件">
 <!ENTITY zotero.delitem.delsnap.label "仅删除快照">
-<!ENTITY zotero.delitem.namehandler.label "仅删除附件">
+<!ENTITY zotero.delitem.namehandler.label "删除附件">

install.rdf

@@ -7,7 +7,7 @@
         RDF:about="urn:mozilla:install-manifest"
         em:id="[email protected]"
         em:name="Del Item With Att"
-        em:version="0.0.5"
+        em:version="0.0.6"
         em:type="2"
         em:creator="Minyi Han"
         em:description="Delete Item(s) With Attachment(s)"

update.rdf

@@ -6,13 +6,13 @@
             <rdf:Seq>
                 <rdf:li>
                     <rdf:Description>
-                        <em:version>0.0.5</em:version>
+                        <em:version>0.0.6</em:version>
                         <em:targetApplication>
                             <rdf:Description>
                                 <em:id>[email protected]</em:id>
                                 <em:minVersion>5.0.0</em:minVersion>
                                 <em:maxVersion>5.*</em:maxVersion>
-                                <em:updateLink>https://github.com/redleafnew/delitemwithatt/releases/download/0.0.5/delitemwithatt.xpi</em:updateLink>
+                                <em:updateLink>https://github.com/redleafnew/delitemwithatt/releases/download/0.0.6/delitemwithatt.xpi</em:updateLink>
                             </rdf:Description>
                         </em:targetApplication> 
 
@@ -21,7 +21,7 @@
                                 <em:id>[email protected]</em:id>
                                 <em:minVersion>4.999</em:minVersion>
                                 <em:maxVersion>5.*</em:maxVersion>
-                                <em:updateLink>https://github.com/redleafnew/delitemwithatt/releases/download/0.0.5/delitemwithatt.xpi</em:updateLink>
+                                <em:updateLink>https://github.com/redleafnew/delitemwithatt/releases/download/0.0.6/delitemwithatt.xpi</em:updateLink>
                             </rdf:Description>
                         </em:targetApplication>