From 7d7df95f2866c5c45f0aaa77baa2b5508ea9b1c7 Mon Sep 17 00:00:00 2001
From: JustOff <Off.Just.Off@gmail.com>
Date: Fri, 20 Apr 2018 21:10:10 +0300
Subject: [PMkit] Provide gContextMenuContentData for 'sdk/context-menu'

---
 application/palemoon/base/content/content.js       | 108 +++++++++++++++++++++
 application/palemoon/base/content/nsContextMenu.js |   3 +
 2 files changed, 111 insertions(+)

diff --git a/application/palemoon/base/content/content.js b/application/palemoon/base/content/content.js
index 19c8b0682..653dac3e3 100644
--- a/application/palemoon/base/content/content.js
+++ b/application/palemoon/base/content/content.js
@@ -60,6 +60,114 @@ addEventListener("blur", function(event) {
   LoginManagerContent.onUsernameInput(event);
 });
 
+// Provide gContextMenuContentData for 'sdk/context-menu'
+var handleContentContextMenu = function (event) {
+  let defaultPrevented = event.defaultPrevented;
+  if (!Services.prefs.getBoolPref("dom.event.contextmenu.enabled")) {
+    let plugin = null;
+    try {
+      plugin = event.target.QueryInterface(Ci.nsIObjectLoadingContent);
+    } catch (e) {}
+    if (plugin && plugin.displayedType == Ci.nsIObjectLoadingContent.TYPE_PLUGIN) {
+      // Don't open a context menu for plugins.
+      return;
+    }
+
+    defaultPrevented = false;
+  }
+
+  if (defaultPrevented)
+    return;
+
+  let addonInfo = {};
+  let subject = {
+    event: event,
+    addonInfo: addonInfo,
+  };
+  subject.wrappedJSObject = subject;
+  Services.obs.notifyObservers(subject, "content-contextmenu", null);
+
+  let doc = event.target.ownerDocument;
+  let docLocation = doc.mozDocumentURIIfNotForErrorPages;
+  docLocation = docLocation && docLocation.spec;
+  let charSet = doc.characterSet;
+  let baseURI = doc.baseURI;
+  let referrer = doc.referrer;
+  let referrerPolicy = doc.referrerPolicy;
+  let frameOuterWindowID = doc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
+                                          .getInterface(Ci.nsIDOMWindowUtils)
+                                          .outerWindowID;
+  let loginFillInfo = LoginManagerContent.getFieldContext(event.target);
+
+  // The same-origin check will be done in nsContextMenu.openLinkInTab.
+  let parentAllowsMixedContent = !!docShell.mixedContentChannel;
+
+  // get referrer attribute from clicked link and parse it
+  // if per element referrer is enabled, the element referrer overrules
+  // the document wide referrer
+  if (Services.prefs.getBoolPref("network.http.enablePerElementReferrer")) {
+    let referrerAttrValue = Services.netUtils.parseAttributePolicyString(event.target.
+                            getAttribute("referrerpolicy"));
+    if (referrerAttrValue !== Ci.nsIHttpChannel.REFERRER_POLICY_UNSET) {
+      referrerPolicy = referrerAttrValue;
+    }
+  }
+
+  // Media related cache info parent needs for saving
+  let contentType = null;
+  let contentDisposition = null;
+  if (event.target.nodeType == Ci.nsIDOMNode.ELEMENT_NODE &&
+      event.target instanceof Ci.nsIImageLoadingContent &&
+      event.target.currentURI) {
+
+    try {
+      let imageCache =
+        Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools)
+                                        .getImgCacheForDocument(doc);
+      let props =
+        imageCache.findEntryProperties(event.target.currentURI, doc);
+      try {
+        contentType = props.get("type", Ci.nsISupportsCString).data;
+      } catch (e) {}
+      try {
+        contentDisposition =
+          props.get("content-disposition", Ci.nsISupportsCString).data;
+      } catch (e) {}
+    } catch (e) {}
+  }
+
+  let selectionInfo = BrowserUtils.getSelectionDetails(content);
+
+  let loadContext = docShell.QueryInterface(Ci.nsILoadContext);
+  let userContextId = loadContext.originAttributes.userContextId;
+
+  let browser = docShell.chromeEventHandler;
+  let mainWin = browser.ownerGlobal;
+
+  mainWin.gContextMenuContentData = {
+    isRemote: false,
+    event: event,
+    popupNode: event.target,
+    browser: browser,
+    addonInfo: addonInfo,
+    documentURIObject: doc.documentURIObject,
+    docLocation: docLocation,
+    charSet: charSet,
+    referrer: referrer,
+    referrerPolicy: referrerPolicy,
+    contentType: contentType,
+    contentDisposition: contentDisposition,
+    selectionInfo: selectionInfo,
+    loginFillInfo,
+    parentAllowsMixedContent,
+    userContextId,
+  };
+}
+
+Cc["@mozilla.org/eventlistenerservice;1"]
+  .getService(Ci.nsIEventListenerService)
+  .addSystemEventListener(global, "contextmenu", handleContentContextMenu, false);
+
 // Lazily load the finder code
 addMessageListener("Finder:Initialize", function () {
   let {RemoteFinderListener} = Cu.import("resource://gre/modules/RemoteFinder.jsm", {});
diff --git a/application/palemoon/base/content/nsContextMenu.js b/application/palemoon/base/content/nsContextMenu.js
index 1fe592b52..3d5d40e4c 100644
--- a/application/palemoon/base/content/nsContextMenu.js
+++ b/application/palemoon/base/content/nsContextMenu.js
@@ -4,6 +4,8 @@
 
 Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
 
+var gContextMenuContentData = null;
+
 function nsContextMenu(aXulMenu, aIsShift) {
   this.shouldDisplay = true;
   this.initMenu(aXulMenu, aIsShift);
@@ -39,6 +41,7 @@ nsContextMenu.prototype = {
   },
 
   hiding: function CM_hiding() {
+    gContextMenuContentData = null;
     InlineSpellCheckerUI.clearSuggestionsFromMenu();
     InlineSpellCheckerUI.clearDictionaryListFromMenu();
     InlineSpellCheckerUI.uninit();
-- 
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