1 files changed, 116 insertions, 0 deletions
diff --git a/dom/base/nsCopySupport.h b/dom/base/nsCopySupport.h
new file mode 100644
index 0000000000..a6b4b5e783
--- /dev/null
+++ b/dom/base/nsCopySupport.h
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#ifndef nsCopySupport_h__
+#define nsCopySupport_h__
+
+#include <cstdint>
+#include "ErrorList.h"
+#include "mozilla/AlreadyAddRefed.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/BasicEvents.h"
+#include "nsStringFwd.h"
+
+class nsINode;
+class nsIImageLoadingContent;
+class nsITransferable;
+class nsILoadContext;
+
+namespace mozilla {
+class PresShell;
+namespace dom {
+class Document;
+class Selection;
+}  // namespace dom
+}  // namespace mozilla
+
+class nsCopySupport {
+  // class of static helper functions for copy support
+ public:
+  static nsresult ClearSelectionCache();
+
+  /**
+   * @param aDoc Needs to be not nullptr.
+   */
+  static nsresult EncodeDocumentWithContextAndPutToClipboard(
+      mozilla::dom::Selection* aSel, mozilla::dom::Document* aDoc,
+      int16_t aClipboardID, bool aWithRubyAnnotation);
+
+  // Get the selection, or entire document, in the format specified by the mime
+  // type (text/html or text/plain). If aSel is non-null, use it, otherwise get
+  // the entire doc.
+  static nsresult GetContents(const nsACString& aMimeType, uint32_t aFlags,
+                              mozilla::dom::Selection* aSel,
+                              mozilla::dom::Document* aDoc, nsAString& outdata);
+
+  static nsresult ImageCopy(nsIImageLoadingContent* aImageElement,
+                            nsILoadContext* aLoadContext, int32_t aCopyFlags);
+
+  // Get the selection as a transferable.
+  // @param aSelection Can be nullptr.
+  // @param aDocument Needs to be not nullptr.
+  // @param aTransferable Needs to be not nullptr.
+  static nsresult GetTransferableForSelection(
+      mozilla::dom::Selection* aSelection, mozilla::dom::Document* aDocument,
+      nsITransferable** aTransferable);
+
+  // Same as GetTransferableForSelection, but doesn't skip invisible content.
+  // @param aNode Needs to be not nullptr.
+  // @param aDoc Needs to be not nullptr.
+  // @param aTransferable Needs to be not nullptr.
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY
+  static nsresult GetTransferableForNode(nsINode* aNode,
+                                         mozilla::dom::Document* aDoc,
+                                         nsITransferable** aTransferable);
+  /**
+   * Retrieve the selection for the given document. If the current focus
+   * within the document has its own selection, aSelection will be set to it
+   * and this focused content node returned. Otherwise, aSelection will be
+   * set to the document's selection and null will be returned.
+   */
+  static already_AddRefed<mozilla::dom::Selection> GetSelectionForCopy(
+      mozilla::dom::Document* aDocument);
+
+  /**
+   * Returns true if a copy operation is currently permitted based on the
+   * current focus and selection within the specified document.
+   */
+  static bool CanCopy(mozilla::dom::Document* aDocument);
+
+  /**
+   * Fires a cut, copy or paste event, on the given presshell, depending
+   * on the value of aEventMessage, which should be either eCut, eCopy or
+   * ePaste, and perform the default copy action if the event was not
+   * cancelled.
+   *
+   * If aSelection is specified, then this selection is used as the target
+   * of the operation. Otherwise, GetSelectionForCopy is used to retrieve
+   * the current selection.
+   *
+   * This will fire a cut, copy or paste event at the node at the start
+   * point of the selection. If a cut or copy event is not cancelled, the
+   * selection is copied to the clipboard and true is returned. Paste events
+   * have no default behaviour but true will be returned. It is expected
+   * that the caller will execute any needed default paste behaviour. Also,
+   * note that this method only copies text to the clipboard, the caller is
+   * responsible for removing the content during a cut operation if true is
+   * returned.
+   *
+   * aClipboardType specifies which clipboard to use, from nsIClipboard.
+   *
+   * If aActionTaken is non-NULL, it will be set to true if an action was
+   * taken, whether it be the default action or the default being prevented.
+   *
+   * If the event is cancelled or an error occurs, false will be returned.
+   */
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY
+  static bool FireClipboardEvent(mozilla::EventMessage aEventMessage,
+                                 int32_t aClipboardType,
+                                 mozilla::PresShell* aPresShell,
+                                 mozilla::dom::Selection* aSelection,
+                                 bool* aActionTaken = nullptr);
+};
+
+#endif