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2 : /* vim:set tw=80 expandtab softtabstop=2 ts=2 sw=2: */
3 : /* ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is Mozilla Communicator client code.
17 : *
18 : * The Initial Developer of the Original Code is
19 : * Netscape Communications Corporation.
20 : * Portions created by the Initial Developer are Copyright (C) 1998
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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37 : * ***** END LICENSE BLOCK ***** */
38 : #include "nsIDOMHTMLAreaElement.h"
39 : #include "nsIDOMEventTarget.h"
40 : #include "nsGenericHTMLElement.h"
41 : #include "nsILink.h"
42 : #include "nsGkAtoms.h"
43 : #include "nsStyleConsts.h"
44 : #include "nsIURL.h"
45 : #include "nsNetUtil.h"
46 : #include "nsReadableUtils.h"
47 : #include "nsIDocument.h"
48 :
49 : #include "Link.h"
50 : using namespace mozilla::dom;
51 :
52 : class nsHTMLAreaElement : public nsGenericHTMLElement,
53 : public nsIDOMHTMLAreaElement,
54 : public nsILink,
55 : public Link
56 : {
57 : public:
58 : nsHTMLAreaElement(already_AddRefed<nsINodeInfo> aNodeInfo);
59 : virtual ~nsHTMLAreaElement();
60 :
61 : // nsISupports
62 : NS_DECL_ISUPPORTS_INHERITED
63 :
64 : // DOM memory reporter participant
65 : NS_DECL_SIZEOF_EXCLUDING_THIS
66 :
67 : // nsIDOMNode
68 0 : NS_FORWARD_NSIDOMNODE(nsGenericHTMLElement::)
69 :
70 : // nsIDOMElement
71 0 : NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)
72 :
73 : // nsIDOMHTMLElement
74 0 : NS_FORWARD_NSIDOMHTMLELEMENT_BASIC(nsGenericHTMLElement::)
75 0 : NS_SCRIPTABLE NS_IMETHOD Click() {
76 0 : return nsGenericHTMLElement::Click();
77 : }
78 : NS_SCRIPTABLE NS_IMETHOD GetTabIndex(PRInt32* aTabIndex);
79 : NS_SCRIPTABLE NS_IMETHOD SetTabIndex(PRInt32 aTabIndex);
80 0 : NS_SCRIPTABLE NS_IMETHOD Focus() {
81 0 : return nsGenericHTMLElement::Focus();
82 : }
83 0 : NS_SCRIPTABLE NS_IMETHOD GetDraggable(bool* aDraggable) {
84 0 : return nsGenericHTMLElement::GetDraggable(aDraggable);
85 : }
86 0 : NS_SCRIPTABLE NS_IMETHOD GetInnerHTML(nsAString& aInnerHTML) {
87 0 : return nsGenericHTMLElement::GetInnerHTML(aInnerHTML);
88 : }
89 0 : NS_SCRIPTABLE NS_IMETHOD SetInnerHTML(const nsAString& aInnerHTML) {
90 0 : return nsGenericHTMLElement::SetInnerHTML(aInnerHTML);
91 : }
92 :
93 : // nsIDOMHTMLAreaElement
94 : NS_DECL_NSIDOMHTMLAREAELEMENT
95 :
96 : // nsILink
97 0 : NS_IMETHOD LinkAdded() { return NS_OK; }
98 0 : NS_IMETHOD LinkRemoved() { return NS_OK; }
99 :
100 : virtual nsresult PreHandleEvent(nsEventChainPreVisitor& aVisitor);
101 : virtual nsresult PostHandleEvent(nsEventChainPostVisitor& aVisitor);
102 : virtual bool IsLink(nsIURI** aURI) const;
103 : virtual void GetLinkTarget(nsAString& aTarget);
104 : virtual nsLinkState GetLinkState() const;
105 : virtual already_AddRefed<nsIURI> GetHrefURI() const;
106 :
107 : virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
108 : nsIContent* aBindingParent,
109 : bool aCompileEventHandlers);
110 : virtual void UnbindFromTree(bool aDeep = true,
111 : bool aNullParent = true);
112 0 : nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
113 : const nsAString& aValue, bool aNotify)
114 : {
115 0 : return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify);
116 : }
117 : virtual nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
118 : nsIAtom* aPrefix, const nsAString& aValue,
119 : bool aNotify);
120 : virtual nsresult UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
121 : bool aNotify);
122 :
123 : virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
124 :
125 : virtual nsEventStates IntrinsicState() const;
126 :
127 : virtual nsXPCClassInfo* GetClassInfo();
128 : };
129 :
130 :
131 0 : NS_IMPL_NS_NEW_HTML_ELEMENT(Area)
132 :
133 :
134 0 : nsHTMLAreaElement::nsHTMLAreaElement(already_AddRefed<nsINodeInfo> aNodeInfo)
135 : : nsGenericHTMLElement(aNodeInfo),
136 0 : Link(this)
137 : {
138 0 : }
139 :
140 0 : nsHTMLAreaElement::~nsHTMLAreaElement()
141 : {
142 0 : }
143 :
144 0 : NS_IMPL_ADDREF_INHERITED(nsHTMLAreaElement, nsGenericElement)
145 0 : NS_IMPL_RELEASE_INHERITED(nsHTMLAreaElement, nsGenericElement)
146 :
147 0 : DOMCI_NODE_DATA(HTMLAreaElement, nsHTMLAreaElement)
148 :
149 : // QueryInterface implementation for nsHTMLAreaElement
150 0 : NS_INTERFACE_TABLE_HEAD(nsHTMLAreaElement)
151 0 : NS_HTML_CONTENT_INTERFACE_TABLE3(nsHTMLAreaElement,
152 : nsIDOMHTMLAreaElement,
153 : nsILink,
154 : Link)
155 0 : NS_HTML_CONTENT_INTERFACE_TABLE_TO_MAP_SEGUE(nsHTMLAreaElement,
156 : nsGenericHTMLElement)
157 0 : NS_HTML_CONTENT_INTERFACE_TABLE_TAIL_CLASSINFO(HTMLAreaElement)
158 :
159 :
160 0 : NS_IMPL_ELEMENT_CLONE(nsHTMLAreaElement)
161 :
162 :
163 0 : NS_IMPL_STRING_ATTR(nsHTMLAreaElement, Alt, alt)
164 0 : NS_IMPL_STRING_ATTR(nsHTMLAreaElement, Coords, coords)
165 0 : NS_IMPL_URI_ATTR(nsHTMLAreaElement, Href, href)
166 0 : NS_IMPL_BOOL_ATTR(nsHTMLAreaElement, NoHref, nohref)
167 0 : NS_IMPL_STRING_ATTR(nsHTMLAreaElement, Shape, shape)
168 0 : NS_IMPL_INT_ATTR(nsHTMLAreaElement, TabIndex, tabindex)
169 :
170 : NS_IMETHODIMP
171 0 : nsHTMLAreaElement::GetTarget(nsAString& aValue)
172 : {
173 0 : if (!GetAttr(kNameSpaceID_None, nsGkAtoms::target, aValue)) {
174 0 : GetBaseTarget(aValue);
175 : }
176 0 : return NS_OK;
177 : }
178 :
179 : NS_IMETHODIMP
180 0 : nsHTMLAreaElement::SetTarget(const nsAString& aValue)
181 : {
182 0 : return SetAttr(kNameSpaceID_None, nsGkAtoms::target, aValue, true);
183 : }
184 :
185 : nsresult
186 0 : nsHTMLAreaElement::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
187 : {
188 0 : return PreHandleEventForAnchors(aVisitor);
189 : }
190 :
191 : nsresult
192 0 : nsHTMLAreaElement::PostHandleEvent(nsEventChainPostVisitor& aVisitor)
193 : {
194 0 : return PostHandleEventForAnchors(aVisitor);
195 : }
196 :
197 : bool
198 0 : nsHTMLAreaElement::IsLink(nsIURI** aURI) const
199 : {
200 0 : return IsHTMLLink(aURI);
201 : }
202 :
203 : void
204 0 : nsHTMLAreaElement::GetLinkTarget(nsAString& aTarget)
205 : {
206 0 : GetAttr(kNameSpaceID_None, nsGkAtoms::target, aTarget);
207 0 : if (aTarget.IsEmpty()) {
208 0 : GetBaseTarget(aTarget);
209 : }
210 0 : }
211 :
212 : nsresult
213 0 : nsHTMLAreaElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
214 : nsIContent* aBindingParent,
215 : bool aCompileEventHandlers)
216 : {
217 0 : Link::ResetLinkState(false);
218 0 : if (aDocument) {
219 0 : aDocument->RegisterPendingLinkUpdate(this);
220 : }
221 :
222 : return nsGenericHTMLElement::BindToTree(aDocument, aParent,
223 : aBindingParent,
224 0 : aCompileEventHandlers);
225 : }
226 :
227 : void
228 0 : nsHTMLAreaElement::UnbindFromTree(bool aDeep, bool aNullParent)
229 : {
230 : // If this link is ever reinserted into a document, it might
231 : // be under a different xml:base, so forget the cached state now.
232 0 : Link::ResetLinkState(false);
233 :
234 0 : nsIDocument* doc = GetCurrentDoc();
235 0 : if (doc) {
236 0 : doc->UnregisterPendingLinkUpdate(this);
237 : }
238 :
239 0 : nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
240 0 : }
241 :
242 : nsresult
243 0 : nsHTMLAreaElement::SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
244 : nsIAtom* aPrefix, const nsAString& aValue,
245 : bool aNotify)
246 : {
247 : nsresult rv =
248 0 : nsGenericHTMLElement::SetAttr(aNameSpaceID, aName, aPrefix, aValue, aNotify);
249 :
250 : // The ordering of the parent class's SetAttr call and Link::ResetLinkState
251 : // is important here! The attribute is not set until SetAttr returns, and
252 : // we will need the updated attribute value because notifying the document
253 : // that content states have changed will call IntrinsicState, which will try
254 : // to get updated information about the visitedness from Link.
255 0 : if (aName == nsGkAtoms::href && aNameSpaceID == kNameSpaceID_None) {
256 0 : Link::ResetLinkState(!!aNotify);
257 : }
258 :
259 0 : return rv;
260 : }
261 :
262 : nsresult
263 0 : nsHTMLAreaElement::UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
264 : bool aNotify)
265 : {
266 : nsresult rv = nsGenericHTMLElement::UnsetAttr(aNameSpaceID, aAttribute,
267 0 : aNotify);
268 :
269 : // The ordering of the parent class's UnsetAttr call and Link::ResetLinkState
270 : // is important here! The attribute is not unset until UnsetAttr returns, and
271 : // we will need the updated attribute value because notifying the document
272 : // that content states have changed will call IntrinsicState, which will try
273 : // to get updated information about the visitedness from Link.
274 0 : if (aAttribute == nsGkAtoms::href && kNameSpaceID_None == aNameSpaceID) {
275 0 : Link::ResetLinkState(!!aNotify);
276 : }
277 :
278 0 : return rv;
279 : }
280 :
281 : #define IMPL_URI_PART(_part) \
282 : NS_IMETHODIMP \
283 : nsHTMLAreaElement::Get##_part(nsAString& a##_part) \
284 : { \
285 : return Link::Get##_part(a##_part); \
286 : } \
287 : NS_IMETHODIMP \
288 : nsHTMLAreaElement::Set##_part(const nsAString& a##_part) \
289 : { \
290 : return Link::Set##_part(a##_part); \
291 : }
292 :
293 0 : IMPL_URI_PART(Protocol)
294 0 : IMPL_URI_PART(Host)
295 0 : IMPL_URI_PART(Hostname)
296 0 : IMPL_URI_PART(Pathname)
297 0 : IMPL_URI_PART(Search)
298 0 : IMPL_URI_PART(Port)
299 0 : IMPL_URI_PART(Hash)
300 :
301 : #undef IMPL_URI_PART
302 :
303 : NS_IMETHODIMP
304 0 : nsHTMLAreaElement::ToString(nsAString& aSource)
305 : {
306 0 : return GetHref(aSource);
307 : }
308 :
309 : NS_IMETHODIMP
310 0 : nsHTMLAreaElement::GetPing(nsAString& aValue)
311 : {
312 0 : return GetURIListAttr(nsGkAtoms::ping, aValue);
313 : }
314 :
315 : NS_IMETHODIMP
316 0 : nsHTMLAreaElement::SetPing(const nsAString& aValue)
317 : {
318 0 : return SetAttr(kNameSpaceID_None, nsGkAtoms::ping, aValue, true);
319 : }
320 :
321 : nsLinkState
322 0 : nsHTMLAreaElement::GetLinkState() const
323 : {
324 0 : return Link::GetLinkState();
325 : }
326 :
327 : already_AddRefed<nsIURI>
328 0 : nsHTMLAreaElement::GetHrefURI() const
329 : {
330 0 : return GetHrefURIForAnchors();
331 : }
332 :
333 : nsEventStates
334 0 : nsHTMLAreaElement::IntrinsicState() const
335 : {
336 0 : return Link::LinkState() | nsGenericHTMLElement::IntrinsicState();
337 : }
338 :
339 : size_t
340 0 : nsHTMLAreaElement::SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const
341 : {
342 0 : return nsGenericHTMLElement::SizeOfExcludingThis(aMallocSizeOf) +
343 0 : Link::SizeOfExcludingThis(aMallocSizeOf);
344 : }
345 :
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