mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
806 lines
26 KiB
C++
806 lines
26 KiB
C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#include "nsCopySupport.h"
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#include "nsIDocumentEncoder.h"
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#include "nsISupports.h"
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#include "nsIContent.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsIClipboard.h"
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#include "nsIFormControl.h"
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#include "nsISelection.h"
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#include "nsWidgetsCID.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIDOMRange.h"
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#include "nsRange.h"
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#include "imgIContainer.h"
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#include "nsIPresShell.h"
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#include "nsFocusManager.h"
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#include "mozilla/dom/DataTransfer.h"
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#include "nsIDocShell.h"
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#include "nsIContentViewerEdit.h"
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#include "nsIClipboardDragDropHooks.h"
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#include "nsIClipboardDragDropHookList.h"
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#include "nsIClipboardHelper.h"
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#include "nsISelectionController.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDocument.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMDocument.h"
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#include "nsIHTMLDocument.h"
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#include "nsGkAtoms.h"
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#include "nsIFrame.h"
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#include "nsIURI.h"
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#include "nsISimpleEnumerator.h"
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// image copy stuff
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#include "nsIImageLoadingContent.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsContentUtils.h"
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#include "nsContentCID.h"
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#include "mozilla/ContentEvents.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/IntegerRange.h"
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#include "mozilla/unused.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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nsresult NS_NewDomSelection(nsISelection **aDomSelection);
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static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
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static NS_DEFINE_CID(kCTransferableCID, NS_TRANSFERABLE_CID);
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static NS_DEFINE_CID(kHTMLConverterCID, NS_HTMLFORMATCONVERTER_CID);
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// copy string data onto the transferable
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static nsresult AppendString(nsITransferable *aTransferable,
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const nsAString& aString,
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const char* aFlavor);
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// copy HTML node data
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static nsresult AppendDOMNode(nsITransferable *aTransferable,
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nsINode* aDOMNode);
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// Helper used for HTMLCopy and GetTransferableForSelection since both routines
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// share common code.
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static nsresult
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SelectionCopyHelper(nsISelection *aSel, nsIDocument *aDoc,
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bool doPutOnClipboard, int16_t aClipboardID,
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uint32_t aFlags, nsITransferable ** aTransferable)
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{
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// Clear the output parameter for the transferable, if provided.
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if (aTransferable) {
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*aTransferable = nullptr;
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}
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nsresult rv;
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nsCOMPtr<nsIDocumentEncoder> docEncoder;
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docEncoder = do_CreateInstance(NS_HTMLCOPY_ENCODER_CONTRACTID);
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NS_ENSURE_TRUE(docEncoder, NS_ERROR_FAILURE);
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// note that we assign text/unicode as mime type, but in fact nsHTMLCopyEncoder
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// ignore it and use text/html or text/plain depending where the selection
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// is. if it is a selection into input/textarea element or in a html content
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// with pre-wrap style : text/plain. Otherwise text/html.
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// see nsHTMLCopyEncoder::SetSelection
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nsAutoString mimeType;
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mimeType.AssignLiteral(kUnicodeMime);
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// Do the first and potentially trial encoding as preformatted and raw.
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uint32_t flags = aFlags | nsIDocumentEncoder::OutputPreformatted
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| nsIDocumentEncoder::OutputRaw
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| nsIDocumentEncoder::OutputForPlainTextClipboardCopy;
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nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(aDoc);
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NS_ASSERTION(domDoc, "Need a document");
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rv = docEncoder->Init(domDoc, mimeType, flags);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = docEncoder->SetSelection(aSel);
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NS_ENSURE_SUCCESS(rv, rv);
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// SetSelection set the mime type to text/plain if the selection is inside a
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// text widget.
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rv = docEncoder->GetMimeType(mimeType);
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NS_ENSURE_SUCCESS(rv, rv);
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bool selForcedTextPlain = mimeType.EqualsLiteral(kTextMime);
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nsAutoString buf;
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rv = docEncoder->EncodeToString(buf);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = docEncoder->GetMimeType(mimeType);
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NS_ENSURE_SUCCESS(rv, rv);
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if (!selForcedTextPlain && mimeType.EqualsLiteral(kTextMime)) {
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// SetSelection and EncodeToString use this case to signal that text/plain
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// was forced because the document is either not an nsIHTMLDocument or it's
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// XHTML. We want to pretty print XHTML but not non-nsIHTMLDocuments.
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nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(aDoc);
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if (!htmlDoc) {
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selForcedTextPlain = true;
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}
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}
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// The mime type is ultimately text/html if the encoder successfully encoded
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// the selection as text/html.
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bool encodedTextHTML = mimeType.EqualsLiteral(kHTMLMime);
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// First, prepare the text/plain clipboard flavor.
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nsAutoString textPlainBuf;
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if (selForcedTextPlain) {
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// Nothing to do. buf contains the final, preformatted, raw text/plain.
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textPlainBuf.Assign(buf);
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} else {
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// Redo the encoding, but this time use pretty printing.
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flags =
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nsIDocumentEncoder::OutputSelectionOnly |
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nsIDocumentEncoder::OutputAbsoluteLinks |
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nsIDocumentEncoder::SkipInvisibleContent |
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nsIDocumentEncoder::OutputDropInvisibleBreak |
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(aFlags & (nsIDocumentEncoder::OutputNoScriptContent |
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nsIDocumentEncoder::OutputRubyAnnotation));
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mimeType.AssignLiteral(kTextMime);
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rv = docEncoder->Init(domDoc, mimeType, flags);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = docEncoder->SetSelection(aSel);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = docEncoder->EncodeToString(textPlainBuf);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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// Second, prepare the text/html flavor.
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nsAutoString textHTMLBuf;
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nsAutoString htmlParentsBuf;
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nsAutoString htmlInfoBuf;
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if (encodedTextHTML) {
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// Redo the encoding, but this time use the passed-in flags.
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mimeType.AssignLiteral(kHTMLMime);
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rv = docEncoder->Init(domDoc, mimeType, aFlags);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = docEncoder->SetSelection(aSel);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = docEncoder->EncodeToStringWithContext(htmlParentsBuf, htmlInfoBuf,
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textHTMLBuf);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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// Get the Clipboard
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nsCOMPtr<nsIClipboard> clipboard;
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if (doPutOnClipboard) {
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clipboard = do_GetService(kCClipboardCID, &rv);
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if (NS_FAILED(rv))
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return rv;
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}
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if ((doPutOnClipboard && clipboard) || aTransferable != nullptr) {
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// Create a transferable for putting data on the Clipboard
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nsCOMPtr<nsITransferable> trans = do_CreateInstance(kCTransferableCID);
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if (trans) {
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trans->Init(aDoc->GetLoadContext());
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if (encodedTextHTML) {
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// Set up a format converter so that clipboard flavor queries work.
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// This converter isn't really used for conversions.
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nsCOMPtr<nsIFormatConverter> htmlConverter =
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do_CreateInstance(kHTMLConverterCID);
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trans->SetConverter(htmlConverter);
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if (!textHTMLBuf.IsEmpty()) {
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// Add the html DataFlavor to the transferable
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rv = AppendString(trans, textHTMLBuf, kHTMLMime);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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// Add the htmlcontext DataFlavor to the transferable
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// Even if parents is empty string, this flavor should
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// be attached to the transferable
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rv = AppendString(trans, htmlParentsBuf, kHTMLContext);
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NS_ENSURE_SUCCESS(rv, rv);
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if (!htmlInfoBuf.IsEmpty()) {
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// Add the htmlinfo DataFlavor to the transferable
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rv = AppendString(trans, htmlInfoBuf, kHTMLInfo);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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if (!textPlainBuf.IsEmpty()) {
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// unicode text
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// Add the unicode DataFlavor to the transferable
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// If we didn't have this, then nsDataObj::GetData matches text/unicode against
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// the kURLMime flavour which is not desirable (eg. when pasting into Notepad)
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rv = AppendString(trans, textPlainBuf, kUnicodeMime);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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// Try and get source URI of the items that are being dragged
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nsIURI *uri = aDoc->GetDocumentURI();
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if (uri) {
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nsAutoCString spec;
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uri->GetSpec(spec);
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if (!spec.IsEmpty()) {
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nsAutoString shortcut;
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AppendUTF8toUTF16(spec, shortcut);
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// Add the URL DataFlavor to the transferable. Don't use kURLMime, as it will
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// cause an unnecessary UniformResourceLocator to be added which confuses
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// some apps eg. Outlook 2000 - (See Bug 315370). Don't use
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// kURLDataMime, as it will cause a bogus 'url ' flavor to
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// show up on the Mac clipboard, confusing other apps, like
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// Terminal (see bug 336012).
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rv = AppendString(trans, shortcut, kURLPrivateMime);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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}
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} else {
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if (!textPlainBuf.IsEmpty()) {
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// Add the unicode DataFlavor to the transferable
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rv = AppendString(trans, textPlainBuf, kUnicodeMime);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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}
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if (doPutOnClipboard && clipboard) {
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bool actuallyPutOnClipboard = true;
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nsCopySupport::DoHooks(aDoc, trans, &actuallyPutOnClipboard);
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// put the transferable on the clipboard
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if (actuallyPutOnClipboard)
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clipboard->SetData(trans, nullptr, aClipboardID);
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}
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// Return the transferable to the caller if requested.
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if (aTransferable != nullptr) {
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trans.swap(*aTransferable);
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}
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}
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}
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return rv;
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}
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nsresult
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nsCopySupport::HTMLCopy(nsISelection* aSel, nsIDocument* aDoc,
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int16_t aClipboardID, bool aWithRubyAnnotation)
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{
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uint32_t flags = nsIDocumentEncoder::SkipInvisibleContent;
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if (aWithRubyAnnotation) {
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flags |= nsIDocumentEncoder::OutputRubyAnnotation;
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}
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return SelectionCopyHelper(aSel, aDoc, true, aClipboardID, flags, nullptr);
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}
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nsresult
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nsCopySupport::GetTransferableForSelection(nsISelection* aSel,
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nsIDocument* aDoc,
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nsITransferable** aTransferable)
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{
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return SelectionCopyHelper(aSel, aDoc, false, 0,
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nsIDocumentEncoder::SkipInvisibleContent,
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aTransferable);
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}
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nsresult
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nsCopySupport::GetTransferableForNode(nsINode* aNode,
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nsIDocument* aDoc,
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nsITransferable** aTransferable)
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{
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nsCOMPtr<nsISelection> selection;
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// Make a temporary selection with aNode in a single range.
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// XXX We should try to get rid of the Selection object here.
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// XXX bug 1245883
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nsresult rv = NS_NewDomSelection(getter_AddRefs(selection));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aNode);
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NS_ENSURE_TRUE(node, NS_ERROR_FAILURE);
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RefPtr<nsRange> range = new nsRange(aNode);
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rv = range->SelectNode(node);
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NS_ENSURE_SUCCESS(rv, rv);
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ErrorResult result;
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selection->AsSelection()->AddRangeInternal(*range, aDoc, result);
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rv = result.StealNSResult();
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NS_ENSURE_SUCCESS(rv, rv);
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// It's not the primary selection - so don't skip invisible content.
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uint32_t flags = 0;
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return SelectionCopyHelper(selection, aDoc, false, 0, flags,
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aTransferable);
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}
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nsresult nsCopySupport::DoHooks(nsIDocument *aDoc, nsITransferable *aTrans,
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bool *aDoPutOnClipboard)
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{
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NS_ENSURE_ARG(aDoc);
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*aDoPutOnClipboard = true;
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nsCOMPtr<nsISupports> container = aDoc->GetContainer();
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nsCOMPtr<nsIClipboardDragDropHookList> hookObj = do_GetInterface(container);
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if (!hookObj) return NS_ERROR_FAILURE;
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nsCOMPtr<nsISimpleEnumerator> enumerator;
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hookObj->GetHookEnumerator(getter_AddRefs(enumerator));
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if (!enumerator) return NS_ERROR_FAILURE;
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// the logic here should follow the behavior specified in
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// nsIClipboardDragDropHooks.h
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nsCOMPtr<nsIClipboardDragDropHooks> override;
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nsCOMPtr<nsISupports> isupp;
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bool hasMoreHooks = false;
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nsresult rv = NS_OK;
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while (NS_SUCCEEDED(enumerator->HasMoreElements(&hasMoreHooks))
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&& hasMoreHooks)
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{
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rv = enumerator->GetNext(getter_AddRefs(isupp));
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if (NS_FAILED(rv)) break;
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override = do_QueryInterface(isupp);
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if (override)
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{
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#ifdef DEBUG
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nsresult hookResult =
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#endif
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override->OnCopyOrDrag(nullptr, aTrans, aDoPutOnClipboard);
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NS_ASSERTION(NS_SUCCEEDED(hookResult), "OnCopyOrDrag hook failed");
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if (!*aDoPutOnClipboard)
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break;
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}
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}
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return rv;
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}
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nsresult
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nsCopySupport::GetContents(const nsACString& aMimeType, uint32_t aFlags, nsISelection *aSel, nsIDocument *aDoc, nsAString& outdata)
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{
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nsresult rv = NS_OK;
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nsCOMPtr<nsIDocumentEncoder> docEncoder;
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nsAutoCString encoderContractID(NS_DOC_ENCODER_CONTRACTID_BASE);
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encoderContractID.Append(aMimeType);
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docEncoder = do_CreateInstance(encoderContractID.get());
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NS_ENSURE_TRUE(docEncoder, NS_ERROR_FAILURE);
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uint32_t flags = aFlags | nsIDocumentEncoder::SkipInvisibleContent;
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if (aMimeType.EqualsLiteral("text/plain"))
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flags |= nsIDocumentEncoder::OutputPreformatted;
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NS_ConvertASCIItoUTF16 unicodeMimeType(aMimeType);
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nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(aDoc);
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NS_ASSERTION(domDoc, "Need a document");
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rv = docEncoder->Init(domDoc, unicodeMimeType, flags);
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if (NS_FAILED(rv)) return rv;
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if (aSel)
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{
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rv = docEncoder->SetSelection(aSel);
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if (NS_FAILED(rv)) return rv;
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}
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// encode the selection
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return docEncoder->EncodeToString(outdata);
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}
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nsresult
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nsCopySupport::ImageCopy(nsIImageLoadingContent* aImageElement,
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nsILoadContext* aLoadContext,
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int32_t aCopyFlags)
|
||
|
{
|
||
|
nsresult rv;
|
||
|
|
||
|
// create a transferable for putting data on the Clipboard
|
||
|
nsCOMPtr<nsITransferable> trans(do_CreateInstance(kCTransferableCID, &rv));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
trans->Init(aLoadContext);
|
||
|
|
||
|
if (aCopyFlags & nsIContentViewerEdit::COPY_IMAGE_TEXT) {
|
||
|
// get the location from the element
|
||
|
nsCOMPtr<nsIURI> uri;
|
||
|
rv = aImageElement->GetCurrentURI(getter_AddRefs(uri));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);
|
||
|
|
||
|
nsAutoCString location;
|
||
|
rv = uri->GetSpec(location);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
// append the string to the transferable
|
||
|
rv = AppendString(trans, NS_ConvertUTF8toUTF16(location), kUnicodeMime);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
}
|
||
|
|
||
|
if (aCopyFlags & nsIContentViewerEdit::COPY_IMAGE_HTML) {
|
||
|
// append HTML data to the transferable
|
||
|
nsCOMPtr<nsINode> node(do_QueryInterface(aImageElement, &rv));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
rv = AppendDOMNode(trans, node);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
}
|
||
|
|
||
|
if (aCopyFlags & nsIContentViewerEdit::COPY_IMAGE_DATA) {
|
||
|
// get the image data from the element
|
||
|
nsCOMPtr<imgIContainer> image =
|
||
|
nsContentUtils::GetImageFromContent(aImageElement);
|
||
|
NS_ENSURE_TRUE(image, NS_ERROR_FAILURE);
|
||
|
|
||
|
nsCOMPtr<nsISupportsInterfacePointer>
|
||
|
imgPtr(do_CreateInstance(NS_SUPPORTS_INTERFACE_POINTER_CONTRACTID, &rv));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
rv = imgPtr->SetData(image);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
// copy the image data onto the transferable
|
||
|
rv = trans->SetTransferData(kNativeImageMime, imgPtr,
|
||
|
sizeof(nsISupports*));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
}
|
||
|
|
||
|
// get clipboard
|
||
|
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
// check whether the system supports the selection clipboard or not.
|
||
|
bool selectionSupported;
|
||
|
rv = clipboard->SupportsSelectionClipboard(&selectionSupported);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
// put the transferable on the clipboard
|
||
|
if (selectionSupported) {
|
||
|
rv = clipboard->SetData(trans, nullptr, nsIClipboard::kSelectionClipboard);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
}
|
||
|
|
||
|
return clipboard->SetData(trans, nullptr, nsIClipboard::kGlobalClipboard);
|
||
|
}
|
||
|
|
||
|
static nsresult AppendString(nsITransferable *aTransferable,
|
||
|
const nsAString& aString,
|
||
|
const char* aFlavor)
|
||
|
{
|
||
|
nsresult rv;
|
||
|
|
||
|
nsCOMPtr<nsISupportsString>
|
||
|
data(do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
rv = data->SetData(aString);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
rv = aTransferable->AddDataFlavor(aFlavor);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
return aTransferable->SetTransferData(aFlavor, data,
|
||
|
aString.Length() * sizeof(char16_t));
|
||
|
}
|
||
|
|
||
|
static nsresult AppendDOMNode(nsITransferable *aTransferable,
|
||
|
nsINode *aDOMNode)
|
||
|
{
|
||
|
nsresult rv;
|
||
|
|
||
|
// selializer
|
||
|
nsCOMPtr<nsIDocumentEncoder>
|
||
|
docEncoder(do_CreateInstance(NS_HTMLCOPY_ENCODER_CONTRACTID, &rv));
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
// get document for the encoder
|
||
|
nsCOMPtr<nsIDocument> document = aDOMNode->OwnerDoc();
|
||
|
|
||
|
// Note that XHTML is not counted as HTML here, because we can't copy it
|
||
|
// properly (all the copy code for non-plaintext assumes using HTML
|
||
|
// serializers and parsers is OK, and those mess up XHTML).
|
||
|
nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(document, &rv);
|
||
|
Unused << htmlDoc;
|
||
|
NS_ENSURE_SUCCESS(rv, NS_OK);
|
||
|
|
||
|
NS_ENSURE_TRUE(document->IsHTMLDocument(), NS_OK);
|
||
|
|
||
|
// init encoder with document and node
|
||
|
rv = docEncoder->NativeInit(document, NS_LITERAL_STRING(kHTMLMime),
|
||
|
nsIDocumentEncoder::OutputAbsoluteLinks |
|
||
|
nsIDocumentEncoder::OutputEncodeW3CEntities);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
rv = docEncoder->SetNativeNode(aDOMNode);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
// serialize to string
|
||
|
nsAutoString html, context, info;
|
||
|
rv = docEncoder->EncodeToStringWithContext(context, info, html);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
// copy them to the transferable
|
||
|
if (!html.IsEmpty()) {
|
||
|
rv = AppendString(aTransferable, html, kHTMLMime);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
}
|
||
|
|
||
|
if (!info.IsEmpty()) {
|
||
|
rv = AppendString(aTransferable, info, kHTMLInfo);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
}
|
||
|
|
||
|
// add a special flavor, even if we don't have html context data
|
||
|
return AppendString(aTransferable, context, kHTMLContext);
|
||
|
}
|
||
|
|
||
|
nsIContent*
|
||
|
nsCopySupport::GetSelectionForCopy(nsIDocument* aDocument, nsISelection** aSelection)
|
||
|
{
|
||
|
*aSelection = nullptr;
|
||
|
|
||
|
nsIPresShell* presShell = aDocument->GetShell();
|
||
|
if (!presShell)
|
||
|
return nullptr;
|
||
|
|
||
|
// check if the focused node in the window has a selection
|
||
|
nsCOMPtr<nsPIDOMWindow> focusedWindow;
|
||
|
nsIContent* content =
|
||
|
nsFocusManager::GetFocusedDescendant(aDocument->GetWindow(), false,
|
||
|
getter_AddRefs(focusedWindow));
|
||
|
if (content) {
|
||
|
nsIFrame* frame = content->GetPrimaryFrame();
|
||
|
if (frame) {
|
||
|
nsCOMPtr<nsISelectionController> selCon;
|
||
|
frame->GetSelectionController(presShell->GetPresContext(), getter_AddRefs(selCon));
|
||
|
if (selCon) {
|
||
|
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSelection);
|
||
|
return content;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// if no selection was found, use the main selection for the window
|
||
|
NS_IF_ADDREF(*aSelection = presShell->GetCurrentSelection(nsISelectionController::SELECTION_NORMAL));
|
||
|
return nullptr;
|
||
|
}
|
||
|
|
||
|
bool
|
||
|
nsCopySupport::CanCopy(nsIDocument* aDocument)
|
||
|
{
|
||
|
if (!aDocument)
|
||
|
return false;
|
||
|
|
||
|
nsCOMPtr<nsISelection> sel;
|
||
|
GetSelectionForCopy(aDocument, getter_AddRefs(sel));
|
||
|
NS_ENSURE_TRUE(sel, false);
|
||
|
|
||
|
bool isCollapsed;
|
||
|
sel->GetIsCollapsed(&isCollapsed);
|
||
|
return !isCollapsed;
|
||
|
}
|
||
|
|
||
|
static bool
|
||
|
IsInsideRuby(nsINode* aNode)
|
||
|
{
|
||
|
for (; aNode; aNode = aNode->GetParent()) {
|
||
|
if (aNode->IsHTMLElement(nsGkAtoms::ruby)) {
|
||
|
return true;
|
||
|
}
|
||
|
}
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
static bool
|
||
|
IsSelectionInsideRuby(nsISelection* aSelection)
|
||
|
{
|
||
|
int32_t rangeCount;
|
||
|
nsresult rv = aSelection->GetRangeCount(&rangeCount);
|
||
|
if (NS_FAILED(rv)) {
|
||
|
return false;
|
||
|
}
|
||
|
for (auto i : MakeRange(rangeCount)) {
|
||
|
nsCOMPtr<nsIDOMRange> range;
|
||
|
aSelection->GetRangeAt(i, getter_AddRefs(range));
|
||
|
nsCOMPtr<nsIDOMNode> node;
|
||
|
range->GetCommonAncestorContainer(getter_AddRefs(node));
|
||
|
nsCOMPtr<nsINode> n = do_QueryInterface(node);
|
||
|
if (!IsInsideRuby(n)) {
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
bool
|
||
|
nsCopySupport::FireClipboardEvent(EventMessage aEventMessage,
|
||
|
int32_t aClipboardType,
|
||
|
nsIPresShell* aPresShell,
|
||
|
nsISelection* aSelection,
|
||
|
bool* aActionTaken)
|
||
|
{
|
||
|
if (aActionTaken) {
|
||
|
*aActionTaken = false;
|
||
|
}
|
||
|
|
||
|
NS_ASSERTION(aEventMessage == eCut || aEventMessage == eCopy ||
|
||
|
aEventMessage == ePaste,
|
||
|
"Invalid clipboard event type");
|
||
|
|
||
|
nsCOMPtr<nsIPresShell> presShell = aPresShell;
|
||
|
if (!presShell)
|
||
|
return false;
|
||
|
|
||
|
nsCOMPtr<nsIDocument> doc = presShell->GetDocument();
|
||
|
if (!doc)
|
||
|
return false;
|
||
|
|
||
|
nsCOMPtr<nsPIDOMWindow> piWindow = doc->GetWindow();
|
||
|
if (!piWindow)
|
||
|
return false;
|
||
|
|
||
|
// if a selection was not supplied, try to find it
|
||
|
nsCOMPtr<nsIContent> content;
|
||
|
nsCOMPtr<nsISelection> sel = aSelection;
|
||
|
if (!sel)
|
||
|
content = GetSelectionForCopy(doc, getter_AddRefs(sel));
|
||
|
|
||
|
// retrieve the event target node from the start of the selection
|
||
|
nsresult rv;
|
||
|
if (sel) {
|
||
|
nsCOMPtr<nsIDOMRange> range;
|
||
|
rv = sel->GetRangeAt(0, getter_AddRefs(range));
|
||
|
if (NS_SUCCEEDED(rv) && range) {
|
||
|
nsCOMPtr<nsIDOMNode> startContainer;
|
||
|
range->GetStartContainer(getter_AddRefs(startContainer));
|
||
|
if (startContainer)
|
||
|
content = do_QueryInterface(startContainer);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// if no content node was set, just get the root
|
||
|
if (!content) {
|
||
|
content = doc->GetRootElement();
|
||
|
if (!content)
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// It seems to be unsafe to fire an event handler during reflow (bug 393696)
|
||
|
if (!nsContentUtils::IsSafeToRunScript()) {
|
||
|
nsContentUtils::WarnScriptWasIgnored(doc);
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
nsCOMPtr<nsIDocShell> docShell = piWindow->GetDocShell();
|
||
|
const bool chromeShell =
|
||
|
docShell && docShell->ItemType() == nsIDocShellTreeItem::typeChrome;
|
||
|
|
||
|
// next, fire the cut, copy or paste event
|
||
|
bool doDefault = true;
|
||
|
RefPtr<DataTransfer> clipboardData;
|
||
|
if (chromeShell || Preferences::GetBool("dom.event.clipboardevents.enabled", true)) {
|
||
|
clipboardData =
|
||
|
new DataTransfer(piWindow, aEventMessage, aEventMessage == ePaste,
|
||
|
aClipboardType);
|
||
|
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
InternalClipboardEvent evt(true, aEventMessage);
|
||
|
evt.clipboardData = clipboardData;
|
||
|
EventDispatcher::Dispatch(content, presShell->GetPresContext(), &evt,
|
||
|
nullptr, &status);
|
||
|
// If the event was cancelled, don't do the clipboard operation
|
||
|
doDefault = (status != nsEventStatus_eConsumeNoDefault);
|
||
|
}
|
||
|
|
||
|
// No need to do anything special during a paste. Either an event listener
|
||
|
// took care of it and cancelled the event, or the caller will handle it.
|
||
|
// Return true to indicate that the event wasn't cancelled.
|
||
|
if (aEventMessage == ePaste) {
|
||
|
// Clear and mark the clipboardData as readonly. This prevents someone
|
||
|
// from reading the clipboard contents after the paste event has fired.
|
||
|
if (clipboardData) {
|
||
|
clipboardData->ClearAll();
|
||
|
clipboardData->SetReadOnly();
|
||
|
}
|
||
|
|
||
|
if (aActionTaken) {
|
||
|
*aActionTaken = true;
|
||
|
}
|
||
|
return doDefault;
|
||
|
}
|
||
|
|
||
|
// Update the presentation in case the event handler modified the selection,
|
||
|
// see bug 602231.
|
||
|
presShell->FlushPendingNotifications(Flush_Frames);
|
||
|
if (presShell->IsDestroying())
|
||
|
return false;
|
||
|
|
||
|
// if the event was not cancelled, do the default copy. If the event was cancelled,
|
||
|
// use the data added to the data transfer and copy that instead.
|
||
|
uint32_t count = 0;
|
||
|
if (doDefault) {
|
||
|
// find the focused node
|
||
|
nsCOMPtr<nsIContent> srcNode = content;
|
||
|
if (content->IsInNativeAnonymousSubtree()) {
|
||
|
srcNode = content->FindFirstNonChromeOnlyAccessContent();
|
||
|
}
|
||
|
|
||
|
// check if we are looking at a password input
|
||
|
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(srcNode);
|
||
|
if (formControl) {
|
||
|
if (formControl->GetType() == NS_FORM_INPUT_PASSWORD) {
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// when cutting non-editable content, do nothing
|
||
|
// XXX this is probably the wrong editable flag to check
|
||
|
if (aEventMessage != eCut || content->IsEditable()) {
|
||
|
// get the data from the selection if any
|
||
|
bool isCollapsed;
|
||
|
sel->GetIsCollapsed(&isCollapsed);
|
||
|
if (isCollapsed) {
|
||
|
if (aActionTaken) {
|
||
|
*aActionTaken = true;
|
||
|
}
|
||
|
return false;
|
||
|
}
|
||
|
// XXX Code which decides whether we should copy text with ruby
|
||
|
// annotation is currenct depending on whether each range of the
|
||
|
// selection is inside a same ruby container. But we really should
|
||
|
// expose the full functionality in browser. See bug 1130891.
|
||
|
bool withRubyAnnotation = IsSelectionInsideRuby(sel);
|
||
|
// call the copy code
|
||
|
rv = HTMLCopy(sel, doc, aClipboardType, withRubyAnnotation);
|
||
|
if (NS_FAILED(rv)) {
|
||
|
return false;
|
||
|
}
|
||
|
} else {
|
||
|
return false;
|
||
|
}
|
||
|
} else if (clipboardData) {
|
||
|
// check to see if any data was put on the data transfer.
|
||
|
clipboardData->GetMozItemCount(&count);
|
||
|
if (count) {
|
||
|
nsCOMPtr<nsIClipboard> clipboard(do_GetService("@mozilla.org/widget/clipboard;1"));
|
||
|
NS_ENSURE_TRUE(clipboard, false);
|
||
|
|
||
|
nsCOMPtr<nsITransferable> transferable =
|
||
|
clipboardData->GetTransferable(0, doc->GetLoadContext());
|
||
|
|
||
|
NS_ENSURE_TRUE(transferable, false);
|
||
|
|
||
|
// put the transferable on the clipboard
|
||
|
rv = clipboard->SetData(transferable, nullptr, aClipboardType);
|
||
|
if (NS_FAILED(rv)) {
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Now that we have copied, update the clipboard commands. This should have
|
||
|
// the effect of updating the enabled state of the paste menu item.
|
||
|
if (doDefault || count) {
|
||
|
piWindow->UpdateCommands(NS_LITERAL_STRING("clipboard"), nullptr, 0);
|
||
|
}
|
||
|
|
||
|
if (aActionTaken) {
|
||
|
*aActionTaken = true;
|
||
|
}
|
||
|
return doDefault;
|
||
|
}
|