mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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350 lines
11 KiB
C++
350 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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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 the Mozilla browser.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications, Inc.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Saari <saari@netscape.com>
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* Conrad Carlen <ccarlen@netscape.com>
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* Pierre Chanial <p_ch@verizon.net>
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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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#include "nsContextMenuInfo.h"
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#include "nsIImageLoadingContent.h"
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#include "imgILoader.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMHTMLDocument.h"
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#include "nsIDOMHTMLElement.h"
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#include "nsIDOMHTMLHtmlElement.h"
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#include "nsIDOMHTMLAnchorElement.h"
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#include "nsIDOMHTMLImageElement.h"
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#include "nsIDOMHTMLAreaElement.h"
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#include "nsIDOMHTMLLinkElement.h"
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#include "nsIDOMDocumentView.h"
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#include "nsIDOMAbstractView.h"
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#include "nsIDOMViewCSS.h"
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#include "nsIDOMCSSStyleDeclaration.h"
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#include "nsIDOMCSSValue.h"
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#include "nsIDOMCSSPrimitiveValue.h"
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#include "nsNetUtil.h"
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#include "nsUnicharUtils.h"
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//*****************************************************************************
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// class nsContextMenuInfo
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//*****************************************************************************
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NS_IMPL_ISUPPORTS1(nsContextMenuInfo, nsIContextMenuInfo)
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nsContextMenuInfo::nsContextMenuInfo()
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{
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}
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nsContextMenuInfo::~nsContextMenuInfo()
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{
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}
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/* readonly attribute nsIDOMEvent mouseEvent; */
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NS_IMETHODIMP
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nsContextMenuInfo::GetMouseEvent(nsIDOMEvent **aEvent)
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{
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NS_ENSURE_ARG_POINTER(aEvent);
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NS_IF_ADDREF(*aEvent = mMouseEvent);
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return NS_OK;
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}
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/* readonly attribute nsIDOMNode targetNode; */
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NS_IMETHODIMP
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nsContextMenuInfo::GetTargetNode(nsIDOMNode **aNode)
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{
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NS_ENSURE_ARG_POINTER(aNode);
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NS_IF_ADDREF(*aNode = mDOMNode);
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return NS_OK;
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}
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/* readonly attribute AString associatedLink; */
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NS_IMETHODIMP
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nsContextMenuInfo::GetAssociatedLink(nsAString& aHRef)
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{
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NS_ENSURE_STATE(mAssociatedLink);
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aHRef.Truncate(0);
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nsCOMPtr<nsIDOMElement> content(do_QueryInterface(mAssociatedLink));
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nsAutoString localName;
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if (content)
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content->GetLocalName(localName);
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nsCOMPtr<nsIDOMElement> linkContent;
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ToLowerCase(localName);
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if (localName.EqualsLiteral("a") ||
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localName.EqualsLiteral("area") ||
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localName.EqualsLiteral("link")) {
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PRBool hasAttr;
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content->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
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if (hasAttr) {
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linkContent = content;
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nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(linkContent));
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if (anchor)
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anchor->GetHref(aHRef);
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else {
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nsCOMPtr<nsIDOMHTMLAreaElement> area(do_QueryInterface(linkContent));
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if (area)
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area->GetHref(aHRef);
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else {
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nsCOMPtr<nsIDOMHTMLLinkElement> link(do_QueryInterface(linkContent));
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if (link)
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link->GetHref(aHRef);
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}
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}
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}
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}
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else {
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nsCOMPtr<nsIDOMNode> curr;
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mAssociatedLink->GetParentNode(getter_AddRefs(curr));
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while (curr) {
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content = do_QueryInterface(curr);
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if (!content)
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break;
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content->GetLocalName(localName);
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ToLowerCase(localName);
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if (localName.EqualsLiteral("a")) {
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PRBool hasAttr;
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content->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
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if (hasAttr) {
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linkContent = content;
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nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(linkContent));
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if (anchor)
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anchor->GetHref(aHRef);
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}
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else
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linkContent = nsnull; // Links can't be nested.
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break;
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}
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nsCOMPtr<nsIDOMNode> temp = curr;
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temp->GetParentNode(getter_AddRefs(curr));
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}
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}
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return NS_OK;
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}
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/* readonly attribute imgIContainer imageContainer; */
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NS_IMETHODIMP
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nsContextMenuInfo::GetImageContainer(imgIContainer **aImageContainer)
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{
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NS_ENSURE_ARG_POINTER(aImageContainer);
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NS_ENSURE_STATE(mDOMNode);
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nsCOMPtr<imgIRequest> request;
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GetImageRequest(mDOMNode, getter_AddRefs(request));
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if (request)
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return request->GetImage(aImageContainer);
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return NS_ERROR_FAILURE;
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}
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/* readonly attribute nsIURI imageSrc; */
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NS_IMETHODIMP
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nsContextMenuInfo::GetImageSrc(nsIURI **aURI)
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{
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NS_ENSURE_ARG_POINTER(aURI);
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NS_ENSURE_STATE(mDOMNode);
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nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(mDOMNode));
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NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
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return content->GetCurrentURI(aURI);
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}
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/* readonly attribute imgIContainer backgroundImageContainer; */
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NS_IMETHODIMP
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nsContextMenuInfo::GetBackgroundImageContainer(imgIContainer **aImageContainer)
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{
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NS_ENSURE_ARG_POINTER(aImageContainer);
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NS_ENSURE_STATE(mDOMNode);
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nsCOMPtr<imgIRequest> request;
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GetBackgroundImageRequest(mDOMNode, getter_AddRefs(request));
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if (request)
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return request->GetImage(aImageContainer);
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return NS_ERROR_FAILURE;
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}
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/* readonly attribute nsIURI backgroundImageSrc; */
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NS_IMETHODIMP
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nsContextMenuInfo::GetBackgroundImageSrc(nsIURI **aURI)
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{
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NS_ENSURE_ARG_POINTER(aURI);
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NS_ENSURE_STATE(mDOMNode);
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nsCOMPtr<imgIRequest> request;
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GetBackgroundImageRequest(mDOMNode, getter_AddRefs(request));
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if (request)
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return request->GetURI(aURI);
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return NS_ERROR_FAILURE;
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}
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//*****************************************************************************
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nsresult
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nsContextMenuInfo::GetImageRequest(nsIDOMNode *aDOMNode, imgIRequest **aRequest)
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{
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NS_ENSURE_ARG(aDOMNode);
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NS_ENSURE_ARG_POINTER(aRequest);
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// Get content
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nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(aDOMNode));
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NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
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return content->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
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aRequest);
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}
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PRBool
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nsContextMenuInfo::HasBackgroundImage(nsIDOMNode * aDOMNode)
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{
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NS_ENSURE_TRUE(aDOMNode, PR_FALSE);
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nsCOMPtr<imgIRequest> request;
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GetBackgroundImageRequest(aDOMNode, getter_AddRefs(request));
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return (request != nsnull);
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}
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nsresult
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nsContextMenuInfo::GetBackgroundImageRequest(nsIDOMNode *aDOMNode, imgIRequest **aRequest)
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{
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NS_ENSURE_ARG(aDOMNode);
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NS_ENSURE_ARG_POINTER(aRequest);
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nsCOMPtr<nsIDOMNode> domNode = aDOMNode;
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// special case for the <html> element: if it has no background-image
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// we'll defer to <body>
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nsCOMPtr<nsIDOMHTMLHtmlElement> htmlElement = do_QueryInterface(domNode);
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if (htmlElement) {
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nsAutoString nameSpace;
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htmlElement->GetNamespaceURI(nameSpace);
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if (nameSpace.IsEmpty()) {
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nsresult rv = GetBackgroundImageRequestInternal(domNode, aRequest);
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if (NS_SUCCEEDED(rv) && *aRequest)
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return NS_OK;
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// no background-image found
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nsCOMPtr<nsIDOMDocument> document;
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domNode->GetOwnerDocument(getter_AddRefs(document));
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nsCOMPtr<nsIDOMHTMLDocument> htmlDocument(do_QueryInterface(document));
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NS_ENSURE_TRUE(htmlDocument, NS_ERROR_FAILURE);
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nsCOMPtr<nsIDOMHTMLElement> body;
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htmlDocument->GetBody(getter_AddRefs(body));
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domNode = do_QueryInterface(body);
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NS_ENSURE_TRUE(domNode, NS_ERROR_FAILURE);
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}
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}
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return GetBackgroundImageRequestInternal(domNode, aRequest);
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}
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nsresult
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nsContextMenuInfo::GetBackgroundImageRequestInternal(nsIDOMNode *aDOMNode, imgIRequest **aRequest)
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{
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NS_ENSURE_ARG_POINTER(aDOMNode);
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nsCOMPtr<nsIDOMNode> domNode = aDOMNode;
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nsCOMPtr<nsIDOMNode> parentNode;
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nsCOMPtr<nsIDOMDocument> document;
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domNode->GetOwnerDocument(getter_AddRefs(document));
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nsCOMPtr<nsIDOMDocumentView> docView(do_QueryInterface(document));
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NS_ENSURE_TRUE(docView, NS_ERROR_FAILURE);
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nsCOMPtr<nsIDOMAbstractView> defaultView;
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docView->GetDefaultView(getter_AddRefs(defaultView));
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nsCOMPtr<nsIDOMViewCSS> defaultCSSView(do_QueryInterface(defaultView));
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NS_ENSURE_TRUE(defaultCSSView, NS_ERROR_FAILURE);
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nsCOMPtr<nsIDOMCSSPrimitiveValue> primitiveValue;
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nsAutoString bgStringValue;
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while (PR_TRUE) {
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nsCOMPtr<nsIDOMElement> domElement(do_QueryInterface(domNode));
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// bail for the parent node of the root element or null argument
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if (!domElement)
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break;
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nsCOMPtr<nsIDOMCSSStyleDeclaration> computedStyle;
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defaultCSSView->GetComputedStyle(domElement, EmptyString(),
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getter_AddRefs(computedStyle));
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if (computedStyle) {
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nsCOMPtr<nsIDOMCSSValue> cssValue;
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computedStyle->GetPropertyCSSValue(NS_LITERAL_STRING("background-image"),
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getter_AddRefs(cssValue));
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primitiveValue = do_QueryInterface(cssValue);
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if (primitiveValue) {
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primitiveValue->GetStringValue(bgStringValue);
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if (!bgStringValue.EqualsLiteral("none")) {
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nsCOMPtr<nsIURI> bgUri;
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NS_NewURI(getter_AddRefs(bgUri), bgStringValue);
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NS_ENSURE_TRUE(bgUri, NS_ERROR_FAILURE);
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nsCOMPtr<imgILoader> il(do_GetService(
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"@mozilla.org/image/loader;1"));
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NS_ENSURE_TRUE(il, NS_ERROR_FAILURE);
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return il->LoadImage(bgUri, nsnull, nsnull, nsnull, nsnull, nsnull,
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nsIRequest::LOAD_NORMAL, nsnull, nsnull,
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aRequest);
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}
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}
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// bail if we encounter non-transparent background-color
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computedStyle->GetPropertyCSSValue(NS_LITERAL_STRING("background-color"),
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getter_AddRefs(cssValue));
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primitiveValue = do_QueryInterface(cssValue);
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if (primitiveValue) {
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primitiveValue->GetStringValue(bgStringValue);
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if (!bgStringValue.EqualsLiteral("transparent"))
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return NS_ERROR_FAILURE;
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}
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}
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domNode->GetParentNode(getter_AddRefs(parentNode));
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domNode = parentNode;
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}
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return NS_ERROR_FAILURE;
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}
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