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90 lines
3.9 KiB
C++
90 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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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#include "nsINode.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 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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bool *aDoPutOnClipboard);
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static nsresult IsPlainTextContext(nsISelection *aSel, nsIDocument *aDoc, bool *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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// Same as GetTransferableForSelection, but doesn't skip invisible content.
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static nsresult GetTransferableForNode(nsINode* aNode,
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nsIDocument* aDoc,
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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 bool 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 bool 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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