1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/editor/libeditor/html/nsHTMLURIRefObject.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,295 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/* Here is the list, from beppe and glazman:
1.10 + href >> A, AREA, BASE, LINK
1.11 + src >> FRAME, IFRAME, IMG, INPUT, SCRIPT
1.12 + <META http-equiv="refresh" content="3,http://www.acme.com/intro.html">
1.13 + longdesc >> FRAME, IFRAME, IMG
1.14 + usemap >> IMG, INPUT, OBJECT
1.15 + action >> FORM
1.16 + background >> BODY
1.17 + codebase >> OBJECT, APPLET
1.18 + classid >> OBJECT
1.19 + data >> OBJECT
1.20 + cite >> BLOCKQUOTE, DEL, INS, Q
1.21 + profile >> HEAD
1.22 + ARCHIVE attribute on APPLET ; warning, it contains a list of URIs.
1.23 +
1.24 + Easier way of organizing the list:
1.25 + a: href
1.26 + area: href
1.27 + base: href
1.28 + body: background
1.29 + blockquote: cite (not normally rewritable)
1.30 + link: href
1.31 + frame: src, longdesc
1.32 + iframe: src, longdesc
1.33 + input: src, usemap
1.34 + form: action
1.35 + img: src, longdesc, usemap
1.36 + script: src
1.37 + applet: codebase, archive <list>
1.38 + object: codebase, data, classid, usemap
1.39 + head: profile
1.40 + del: cite
1.41 + ins: cite
1.42 + q: cite
1.43 + */
1.44 +
1.45 +/* Here is how to open a channel for testing
1.46 + (from embed/qa/testembed/Tests.cpp):
1.47 +
1.48 + nsCOMPtr<nsIChannel> theChannel;
1.49 + nsCString uri;
1.50 + nsCOMPtr<nsIURI> theURI;
1.51 + rv = NS_NewURI(getter_AddRefs(theURI), theSpec);
1.52 + if (!theURI)
1.53 + error;
1.54 + rv = NS_OpenURI(getter_AddRefs(theChannel), theURI, nullptr, theLoadGroup);
1.55 + if (!theChannel)
1.56 + error;
1.57 + nsCOMPtr<nsILoadGroup> theLoadGroup(do_CreateInstance(NS_LOADGROUP_CONTRACTID));
1.58 + if (!theLoadGroup)
1.59 + error;
1.60 + nsCOMPtr<nsIStreamListener> listener(static_cast<nsIStreamListener*>(qaBrowserImpl));
1.61 + //nsCOMPtr<nsIWeakReference> thisListener(do_GetWeakReference(listener));
1.62 + //qaWebBrowser->AddWebBrowserListener(thisListener, NS_GET_IID(nsIStreamListener));
1.63 +
1.64 + // this calls nsIStreamListener::OnDataAvailable()
1.65 + rv = theChannel->AsyncOpen(listener, nullptr);
1.66 +
1.67 + nsCOMPtr<nsIRequest> theRequest = do_QueryInterface(theChannel);
1.68 + // Now we can do things on nsIRequest (like what?)
1.69 + */
1.70 +
1.71 +#include "mozilla/mozalloc.h"
1.72 +#include "nsAString.h"
1.73 +#include "nsDebug.h"
1.74 +#include "nsError.h"
1.75 +#include "nsHTMLURIRefObject.h"
1.76 +#include "nsID.h"
1.77 +#include "nsIDOMAttr.h"
1.78 +#include "nsIDOMElement.h"
1.79 +#include "nsIDOMMozNamedAttrMap.h"
1.80 +#include "nsIDOMNode.h"
1.81 +#include "nsISupportsUtils.h"
1.82 +#include "nsString.h"
1.83 +
1.84 +// String classes change too often and I can't keep up.
1.85 +// Set this macro to this week's approved case-insensitive compare routine.
1.86 +#define MATCHES(tagName, str) tagName.EqualsIgnoreCase(str)
1.87 +
1.88 +nsHTMLURIRefObject::nsHTMLURIRefObject()
1.89 +{
1.90 + mCurAttrIndex = mAttributeCnt = 0;
1.91 +}
1.92 +
1.93 +nsHTMLURIRefObject::~nsHTMLURIRefObject()
1.94 +{
1.95 +}
1.96 +
1.97 +//Interfaces for addref and release and queryinterface
1.98 +NS_IMPL_ISUPPORTS(nsHTMLURIRefObject, nsIURIRefObject)
1.99 +
1.100 +NS_IMETHODIMP
1.101 +nsHTMLURIRefObject::Reset()
1.102 +{
1.103 + mCurAttrIndex = 0;
1.104 + return NS_OK;
1.105 +}
1.106 +
1.107 +NS_IMETHODIMP
1.108 +nsHTMLURIRefObject::GetNextURI(nsAString & aURI)
1.109 +{
1.110 + NS_ENSURE_TRUE(mNode, NS_ERROR_NOT_INITIALIZED);
1.111 +
1.112 + nsAutoString tagName;
1.113 + nsresult rv = mNode->GetNodeName(tagName);
1.114 + NS_ENSURE_SUCCESS(rv, rv);
1.115 +
1.116 + // Loop over attribute list:
1.117 + if (!mAttributes)
1.118 + {
1.119 + nsCOMPtr<nsIDOMElement> element (do_QueryInterface(mNode));
1.120 + NS_ENSURE_TRUE(element, NS_ERROR_INVALID_ARG);
1.121 +
1.122 + mCurAttrIndex = 0;
1.123 + element->GetAttributes(getter_AddRefs(mAttributes));
1.124 + NS_ENSURE_TRUE(mAttributes, NS_ERROR_NOT_INITIALIZED);
1.125 +
1.126 + rv = mAttributes->GetLength(&mAttributeCnt);
1.127 + NS_ENSURE_SUCCESS(rv, rv);
1.128 + NS_ENSURE_TRUE(mAttributeCnt, NS_ERROR_FAILURE);
1.129 + mCurAttrIndex = 0;
1.130 + }
1.131 +#ifdef DEBUG_akkana
1.132 + printf("Looking at tag '%s'\n",
1.133 + NS_LossyConvertUTF16toASCII(tagName).get());
1.134 +#endif
1.135 + while (mCurAttrIndex < mAttributeCnt)
1.136 + {
1.137 + nsCOMPtr<nsIDOMAttr> attrNode;
1.138 + rv = mAttributes->Item(mCurAttrIndex++, getter_AddRefs(attrNode));
1.139 + NS_ENSURE_SUCCESS(rv, rv);
1.140 + NS_ENSURE_ARG_POINTER(attrNode);
1.141 + nsString curAttr;
1.142 + rv = attrNode->GetName(curAttr);
1.143 + NS_ENSURE_SUCCESS(rv, rv);
1.144 +
1.145 + // href >> A, AREA, BASE, LINK
1.146 +#ifdef DEBUG_akkana
1.147 + printf("Trying to match attribute '%s'\n",
1.148 + NS_LossyConvertUTF16toASCII(curAttr).get());
1.149 +#endif
1.150 + if (MATCHES(curAttr, "href"))
1.151 + {
1.152 + if (!MATCHES(tagName, "a") && !MATCHES(tagName, "area")
1.153 + && !MATCHES(tagName, "base") && !MATCHES(tagName, "link"))
1.154 + continue;
1.155 + rv = attrNode->GetValue(aURI);
1.156 + NS_ENSURE_SUCCESS(rv, rv);
1.157 + nsString uri (aURI);
1.158 + // href pointing to a named anchor doesn't count
1.159 + if (aURI.First() != char16_t('#'))
1.160 + return NS_OK;
1.161 + aURI.Truncate();
1.162 + return NS_ERROR_INVALID_ARG;
1.163 + }
1.164 + // src >> FRAME, IFRAME, IMG, INPUT, SCRIPT
1.165 + else if (MATCHES(curAttr, "src"))
1.166 + {
1.167 + if (!MATCHES(tagName, "img")
1.168 + && !MATCHES(tagName, "frame") && !MATCHES(tagName, "iframe")
1.169 + && !MATCHES(tagName, "input") && !MATCHES(tagName, "script"))
1.170 + continue;
1.171 + return attrNode->GetValue(aURI);
1.172 + }
1.173 + //<META http-equiv="refresh" content="3,http://www.acme.com/intro.html">
1.174 + else if (MATCHES(curAttr, "content"))
1.175 + {
1.176 + if (!MATCHES(tagName, "meta"))
1.177 + continue;
1.178 + }
1.179 + // longdesc >> FRAME, IFRAME, IMG
1.180 + else if (MATCHES(curAttr, "longdesc"))
1.181 + {
1.182 + if (!MATCHES(tagName, "img")
1.183 + && !MATCHES(tagName, "frame") && !MATCHES(tagName, "iframe"))
1.184 + continue;
1.185 + }
1.186 + // usemap >> IMG, INPUT, OBJECT
1.187 + else if (MATCHES(curAttr, "usemap"))
1.188 + {
1.189 + if (!MATCHES(tagName, "img")
1.190 + && !MATCHES(tagName, "input") && !MATCHES(tagName, "object"))
1.191 + continue;
1.192 + }
1.193 + // action >> FORM
1.194 + else if (MATCHES(curAttr, "action"))
1.195 + {
1.196 + if (!MATCHES(tagName, "form"))
1.197 + continue;
1.198 + }
1.199 + // background >> BODY
1.200 + else if (MATCHES(curAttr, "background"))
1.201 + {
1.202 + if (!MATCHES(tagName, "body"))
1.203 + continue;
1.204 + }
1.205 + // codebase >> OBJECT, APPLET
1.206 + else if (MATCHES(curAttr, "codebase"))
1.207 + {
1.208 + if (!MATCHES(tagName, "meta"))
1.209 + continue;
1.210 + }
1.211 + // classid >> OBJECT
1.212 + else if (MATCHES(curAttr, "classid"))
1.213 + {
1.214 + if (!MATCHES(tagName, "object"))
1.215 + continue;
1.216 + }
1.217 + // data >> OBJECT
1.218 + else if (MATCHES(curAttr, "data"))
1.219 + {
1.220 + if (!MATCHES(tagName, "object"))
1.221 + continue;
1.222 + }
1.223 + // cite >> BLOCKQUOTE, DEL, INS, Q
1.224 + else if (MATCHES(curAttr, "cite"))
1.225 + {
1.226 + if (!MATCHES(tagName, "blockquote") && !MATCHES(tagName, "q")
1.227 + && !MATCHES(tagName, "del") && !MATCHES(tagName, "ins"))
1.228 + continue;
1.229 + }
1.230 + // profile >> HEAD
1.231 + else if (MATCHES(curAttr, "profile"))
1.232 + {
1.233 + if (!MATCHES(tagName, "head"))
1.234 + continue;
1.235 + }
1.236 + // archive attribute on APPLET; warning, it contains a list of URIs.
1.237 + else if (MATCHES(curAttr, "archive"))
1.238 + {
1.239 + if (!MATCHES(tagName, "applet"))
1.240 + continue;
1.241 + }
1.242 + }
1.243 + // Return a code to indicate that there are no more,
1.244 + // to distinguish that case from real errors.
1.245 + return NS_ERROR_NOT_AVAILABLE;
1.246 +}
1.247 +
1.248 +NS_IMETHODIMP
1.249 +nsHTMLURIRefObject::RewriteAllURIs(const nsAString & aOldPat,
1.250 + const nsAString & aNewPat,
1.251 + bool aMakeRel)
1.252 +{
1.253 +#ifdef DEBUG_akkana
1.254 + printf("Can't rewrite URIs yet\n");
1.255 +#endif
1.256 + return NS_ERROR_NOT_IMPLEMENTED;
1.257 +}
1.258 +
1.259 +NS_IMETHODIMP
1.260 +nsHTMLURIRefObject::GetNode(nsIDOMNode** aNode)
1.261 +{
1.262 + NS_ENSURE_TRUE(mNode, NS_ERROR_NOT_INITIALIZED);
1.263 + NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
1.264 + *aNode = mNode.get();
1.265 + NS_ADDREF(*aNode);
1.266 + return NS_OK;
1.267 +}
1.268 +
1.269 +NS_IMETHODIMP
1.270 +nsHTMLURIRefObject::SetNode(nsIDOMNode *aNode)
1.271 +{
1.272 + mNode = aNode;
1.273 + nsAutoString dummyURI;
1.274 + if (NS_SUCCEEDED(GetNextURI(dummyURI)))
1.275 + {
1.276 + mCurAttrIndex = 0; // Reset so we'll get the first node next time
1.277 + return NS_OK;
1.278 + }
1.279 +
1.280 + // If there weren't any URIs in the attributes,
1.281 + // then don't accept this node.
1.282 + mNode = 0;
1.283 + return NS_ERROR_INVALID_ARG;
1.284 +}
1.285 +
1.286 +nsresult NS_NewHTMLURIRefObject(nsIURIRefObject** aResult, nsIDOMNode* aNode)
1.287 +{
1.288 + nsHTMLURIRefObject* refObject = new nsHTMLURIRefObject();
1.289 + nsresult rv = refObject->SetNode(aNode);
1.290 + if (NS_FAILED(rv)) {
1.291 + *aResult = 0;
1.292 + delete refObject;
1.293 + return rv;
1.294 + }
1.295 + return refObject->QueryInterface(NS_GET_IID(nsIURIRefObject),
1.296 + (void**)aResult);
1.297 +}
1.298 +
