Add m-esr52 at 52.6.0

1 files changed, 326 insertions, 0 deletions

diff --git a/embedding/browser/nsContextMenuInfo.cpp b/embedding/browser/nsContextMenuInfo.cpp
new file mode 100644
index 000000000..5052dda65
--- /dev/null
+++ b/embedding/browser/nsContextMenuInfo.cpp
@@ -0,0 +1,326 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsContextMenuInfo.h"
+
+#include "nsIImageLoadingContent.h"
+#include "imgLoader.h"
+#include "nsIDOMDocument.h"
+#include "nsIDOMHTMLDocument.h"
+#include "nsIDOMHTMLElement.h"
+#include "nsIDOMHTMLHtmlElement.h"
+#include "nsIDOMHTMLAnchorElement.h"
+#include "nsIDOMHTMLImageElement.h"
+#include "nsIDOMHTMLAreaElement.h"
+#include "nsIDOMHTMLLinkElement.h"
+#include "nsIDOMWindow.h"
+#include "nsICSSDeclaration.h"
+#include "nsIDOMCSSValue.h"
+#include "nsIDOMCSSPrimitiveValue.h"
+#include "nsNetUtil.h"
+#include "nsUnicharUtils.h"
+#include "nsIDocument.h"
+#include "nsIPrincipal.h"
+#include "nsIContentSecurityPolicy.h"
+#include "nsIContentPolicy.h"
+#include "imgRequestProxy.h"
+
+using mozilla::dom::Element;
+using mozilla::ErrorResult;
+
+NS_IMPL_ISUPPORTS(nsContextMenuInfo, nsIContextMenuInfo)
+
+nsContextMenuInfo::nsContextMenuInfo()
+{
+}
+
+nsContextMenuInfo::~nsContextMenuInfo()
+{
+}
+
+NS_IMETHODIMP
+nsContextMenuInfo::GetMouseEvent(nsIDOMEvent** aEvent)
+{
+  NS_ENSURE_ARG_POINTER(aEvent);
+  NS_IF_ADDREF(*aEvent = mMouseEvent);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContextMenuInfo::GetTargetNode(nsIDOMNode** aNode)
+{
+  NS_ENSURE_ARG_POINTER(aNode);
+  NS_IF_ADDREF(*aNode = mDOMNode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContextMenuInfo::GetAssociatedLink(nsAString& aHRef)
+{
+  NS_ENSURE_STATE(mAssociatedLink);
+  aHRef.Truncate(0);
+
+  nsCOMPtr<nsIDOMElement> content(do_QueryInterface(mAssociatedLink));
+  nsAutoString localName;
+  if (content) {
+    content->GetLocalName(localName);
+  }
+
+  nsCOMPtr<nsIDOMElement> linkContent;
+  ToLowerCase(localName);
+  if (localName.EqualsLiteral("a") ||
+      localName.EqualsLiteral("area") ||
+      localName.EqualsLiteral("link")) {
+    bool hasAttr;
+    content->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
+    if (hasAttr) {
+      linkContent = content;
+      nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(linkContent));
+      if (anchor) {
+        anchor->GetHref(aHRef);
+      } else {
+        nsCOMPtr<nsIDOMHTMLAreaElement> area(do_QueryInterface(linkContent));
+        if (area) {
+          area->GetHref(aHRef);
+        } else {
+          nsCOMPtr<nsIDOMHTMLLinkElement> link(do_QueryInterface(linkContent));
+          if (link) {
+            link->GetHref(aHRef);
+          }
+        }
+      }
+    }
+  } else {
+    nsCOMPtr<nsIDOMNode> curr;
+    mAssociatedLink->GetParentNode(getter_AddRefs(curr));
+    while (curr) {
+      content = do_QueryInterface(curr);
+      if (!content) {
+        break;
+      }
+      content->GetLocalName(localName);
+      ToLowerCase(localName);
+      if (localName.EqualsLiteral("a")) {
+        bool hasAttr;
+        content->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
+        if (hasAttr) {
+          linkContent = content;
+          nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(
+            do_QueryInterface(linkContent));
+          if (anchor) {
+            anchor->GetHref(aHRef);
+          }
+        } else {
+          linkContent = nullptr; // Links can't be nested.
+        }
+        break;
+      }
+
+      nsCOMPtr<nsIDOMNode> temp = curr;
+      temp->GetParentNode(getter_AddRefs(curr));
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContextMenuInfo::GetImageContainer(imgIContainer** aImageContainer)
+{
+  NS_ENSURE_ARG_POINTER(aImageContainer);
+  NS_ENSURE_STATE(mDOMNode);
+
+  nsCOMPtr<imgIRequest> request;
+  GetImageRequest(mDOMNode, getter_AddRefs(request));
+  if (request) {
+    return request->GetImage(aImageContainer);
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsContextMenuInfo::GetImageSrc(nsIURI** aURI)
+{
+  NS_ENSURE_ARG_POINTER(aURI);
+  NS_ENSURE_STATE(mDOMNode);
+
+  nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(mDOMNode));
+  NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
+  return content->GetCurrentURI(aURI);
+}
+
+NS_IMETHODIMP
+nsContextMenuInfo::GetBackgroundImageContainer(imgIContainer** aImageContainer)
+{
+  NS_ENSURE_ARG_POINTER(aImageContainer);
+  NS_ENSURE_STATE(mDOMNode);
+
+  RefPtr<imgRequestProxy> request;
+  GetBackgroundImageRequest(mDOMNode, getter_AddRefs(request));
+  if (request) {
+    return request->GetImage(aImageContainer);
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsContextMenuInfo::GetBackgroundImageSrc(nsIURI** aURI)
+{
+  NS_ENSURE_ARG_POINTER(aURI);
+  NS_ENSURE_STATE(mDOMNode);
+
+  RefPtr<imgRequestProxy> request;
+  GetBackgroundImageRequest(mDOMNode, getter_AddRefs(request));
+  if (request) {
+    return request->GetURI(aURI);
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+nsresult
+nsContextMenuInfo::GetImageRequest(nsIDOMNode* aDOMNode, imgIRequest** aRequest)
+{
+  NS_ENSURE_ARG(aDOMNode);
+  NS_ENSURE_ARG_POINTER(aRequest);
+
+  // Get content
+  nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(aDOMNode));
+  NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
+
+  return content->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST, aRequest);
+}
+
+bool
+nsContextMenuInfo::HasBackgroundImage(nsIDOMNode* aDOMNode)
+{
+  NS_ENSURE_TRUE(aDOMNode, false);
+
+  RefPtr<imgRequestProxy> request;
+  GetBackgroundImageRequest(aDOMNode, getter_AddRefs(request));
+
+  return (request != nullptr);
+}
+
+nsresult
+nsContextMenuInfo::GetBackgroundImageRequest(nsIDOMNode* aDOMNode,
+                                             imgRequestProxy** aRequest)
+{
+
+  NS_ENSURE_ARG(aDOMNode);
+  NS_ENSURE_ARG_POINTER(aRequest);
+
+  nsCOMPtr<nsIDOMNode> domNode = aDOMNode;
+
+  // special case for the <html> element: if it has no background-image
+  // we'll defer to <body>
+  nsCOMPtr<nsIDOMHTMLHtmlElement> htmlElement = do_QueryInterface(domNode);
+  if (htmlElement) {
+    nsCOMPtr<nsIDOMHTMLElement> element = do_QueryInterface(domNode);
+    nsAutoString nameSpace;
+    element->GetNamespaceURI(nameSpace);
+    if (nameSpace.IsEmpty()) {
+      nsresult rv = GetBackgroundImageRequestInternal(domNode, aRequest);
+      if (NS_SUCCEEDED(rv) && *aRequest) {
+        return NS_OK;
+      }
+
+      // no background-image found
+      nsCOMPtr<nsIDOMDocument> document;
+      domNode->GetOwnerDocument(getter_AddRefs(document));
+      nsCOMPtr<nsIDOMHTMLDocument> htmlDocument(do_QueryInterface(document));
+      NS_ENSURE_TRUE(htmlDocument, NS_ERROR_FAILURE);
+
+      nsCOMPtr<nsIDOMHTMLElement> body;
+      htmlDocument->GetBody(getter_AddRefs(body));
+      domNode = do_QueryInterface(body);
+      NS_ENSURE_TRUE(domNode, NS_ERROR_FAILURE);
+    }
+  }
+  return GetBackgroundImageRequestInternal(domNode, aRequest);
+}
+
+nsresult
+nsContextMenuInfo::GetBackgroundImageRequestInternal(nsIDOMNode* aDOMNode,
+                                                     imgRequestProxy** aRequest)
+{
+  NS_ENSURE_ARG_POINTER(aDOMNode);
+
+  nsCOMPtr<nsIDOMNode> domNode = aDOMNode;
+  nsCOMPtr<nsIDOMNode> parentNode;
+
+  nsCOMPtr<nsIDOMDocument> document;
+  domNode->GetOwnerDocument(getter_AddRefs(document));
+  NS_ENSURE_TRUE(document, NS_ERROR_FAILURE);
+
+  nsCOMPtr<mozIDOMWindowProxy> window;
+  document->GetDefaultView(getter_AddRefs(window));
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  auto* piWindow = nsPIDOMWindowOuter::From(window);
+  nsPIDOMWindowInner* innerWindow = piWindow->GetCurrentInnerWindow();
+  MOZ_ASSERT(innerWindow);
+
+  nsCOMPtr<nsIDOMCSSPrimitiveValue> primitiveValue;
+  nsAutoString bgStringValue;
+
+  nsCOMPtr<nsIDocument> doc(do_QueryInterface(document));
+  nsCOMPtr<nsIPrincipal> principal = doc ? doc->NodePrincipal() : nullptr;
+
+  while (true) {
+    nsCOMPtr<Element> domElement(do_QueryInterface(domNode));
+    // bail for the parent node of the root element or null argument
+    if (!domElement) {
+      break;
+    }
+
+    ErrorResult dummy;
+    nsCOMPtr<nsICSSDeclaration> computedStyle =
+      innerWindow->GetComputedStyle(*domElement, EmptyString(), dummy);
+    dummy.SuppressException();
+    if (computedStyle) {
+      nsCOMPtr<nsIDOMCSSValue> cssValue;
+      computedStyle->GetPropertyCSSValue(NS_LITERAL_STRING("background-image"),
+                                         getter_AddRefs(cssValue));
+      primitiveValue = do_QueryInterface(cssValue);
+      if (primitiveValue) {
+        primitiveValue->GetStringValue(bgStringValue);
+        if (!bgStringValue.EqualsLiteral("none")) {
+          nsCOMPtr<nsIURI> bgUri;
+          NS_NewURI(getter_AddRefs(bgUri), bgStringValue);
+          NS_ENSURE_TRUE(bgUri, NS_ERROR_FAILURE);
+
+          imgLoader* il = imgLoader::NormalLoader();
+          NS_ENSURE_TRUE(il, NS_ERROR_FAILURE);
+
+          return il->LoadImage(bgUri, nullptr, nullptr,
+                               doc->GetReferrerPolicy(), principal, nullptr,
+                               nullptr, nullptr, nullptr, nsIRequest::LOAD_NORMAL,
+                               nullptr, nsIContentPolicy::TYPE_INTERNAL_IMAGE,
+                               EmptyString(), aRequest);
+        }
+      }
+
+      // bail if we encounter non-transparent background-color
+      computedStyle->GetPropertyCSSValue(NS_LITERAL_STRING("background-color"),
+                                         getter_AddRefs(cssValue));
+      primitiveValue = do_QueryInterface(cssValue);
+      if (primitiveValue) {
+        primitiveValue->GetStringValue(bgStringValue);
+        if (!bgStringValue.EqualsLiteral("transparent")) {
+          return NS_ERROR_FAILURE;
+        }
+      }
+    }
+
+    domNode->GetParentNode(getter_AddRefs(parentNode));
+    domNode = parentNode;
+  }
+
+  return NS_ERROR_FAILURE;
+}