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118 lines
5.1 KiB
C++
118 lines
5.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsCopySupport_h__
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#define nsCopySupport_h__
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#include "nscore.h"
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class nsISelection;
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class nsIDocument;
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class nsIImageLoadingContent;
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class nsIContent;
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class nsITransferable;
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class nsACString;
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class nsAString;
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class nsIDOMNode;
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class nsIPresShell;
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class nsCopySupport
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{
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// class of static helper functions for copy support
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public:
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static nsresult HTMLCopy(nsISelection *aSel, nsIDocument *aDoc, PRInt16 aClipboardID);
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static nsresult DoHooks(nsIDocument *aDoc, nsITransferable *aTrans,
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PRBool *aDoPutOnClipboard);
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static nsresult IsPlainTextContext(nsISelection *aSel, nsIDocument *aDoc, PRBool *aIsPlainTextContext);
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// Get the selection, or entire document, in the format specified by the mime type
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// (text/html or text/plain). If aSel is non-null, use it, otherwise get the entire
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// doc.
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static nsresult GetContents(const nsACString& aMimeType, PRUint32 aFlags, nsISelection *aSel, nsIDocument *aDoc, nsAString& outdata);
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static nsresult ImageCopy(nsIImageLoadingContent* aImageElement,
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PRInt32 aCopyFlags);
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// Get the selection as a transferable. Similar to HTMLCopy except does
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// not deal with the clipboard.
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static nsresult GetTransferableForSelection(nsISelection * aSelection,
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nsIDocument * aDocument,
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nsITransferable ** aTransferable);
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/**
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* Retrieve the selection for the given document. If the current focus
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* within the document has its own selection, aSelection will be set to it
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* and this focused content node returned. Otherwise, aSelection will be
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* set to the document's selection and null will be returned.
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*/
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static nsIContent* GetSelectionForCopy(nsIDocument* aDocument,
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nsISelection** aSelection);
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/**
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* Returns true if a copy operation is currently permitted based on the
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* current focus and selection within the specified document.
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*/
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static PRBool CanCopy(nsIDocument* aDocument);
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/**
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* Fires a cut, copy or paste event, on the given presshell, depending
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* on the value of aType, which should be either NS_CUT, NS_COPY or
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* NS_PASTE, and perform the default copy action if the event was not
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* cancelled.
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*
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* If aSelection is specified, then this selection is used as the target
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* of the operation. Otherwise, GetSelectionForCopy is used to retrieve
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* the current selection.
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*
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* This will fire a cut, copy or paste event at the node at the start
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* point of the selection. If a cut or copy event is not cancelled, the
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* selection is copied to the clipboard and true is returned. Paste events
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* have no default behaviour but true will be returned. It is expected
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* that the caller will execute any needed default paste behaviour. Also,
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* note that this method only copies text to the clipboard, the caller is
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* responsible for removing the content during a cut operation if true is
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* returned.
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*
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* If the event is cancelled or an error occurs, false will be returned.
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*/
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static PRBool FireClipboardEvent(PRInt32 aType,
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nsIPresShell* aPresShell,
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nsISelection* aSelection);
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};
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#endif
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