2 * (C) Copyright 2007-2008 Jeremy Maitin-Shepard
4 * Use, modification, and distribution are subject to the terms specified in the
9 * A load_spec has the following properties:
11 * Name: Required? Type: Description:
12 * ----- --------- ----- ------------
13 * uri required string Specifies the URI of the target.
15 * document optional nsIDOMDocument Specifies a document corresponding to the target.
16 * Can also provide a default value for the mime_type property,
17 * the title property, and the source_frame property.
19 * element optional nsIDOMNode The DOM node of a load_spec created by load_spec_from_element.
21 * flags optional number Specifies flags to pass to nsIWebNavigation.loadURI
23 * cache_key optional nsISHEntry Specifies a key for accessing the target from the cache.
25 * referrer optional nsIURI Specifies the referrer URI to use to access the target.
27 * post_data optional nsIInputStream Specifies POST data to use to access the target.
28 * The request headers should be included in this stream.
31 * optional string Specifies the MIME type for the request post data.
34 * optional nsIInputStream Specifies the POST data to use to access the target.
35 * The request_mime_type property must also be set.
36 * This provides a value for post_data.
38 * mime_type optional string Specifies the MIME type of the target.
40 * title optional string Specifies a title/description text associated with the target.
42 * source_frame optional nsIDOMWindow Specifies the frame from which the link to the target was "obtained".
43 * Can provide a default value for referrer if document is not specified.
45 * filename optional string Specifies a default filename to use to save the target.
48 * optional string Specifies a default filename extension to use to save the target.
50 * suggest_filename_from_uri
51 * optional boolean Specifies whether to attempt to generate a filename from the URI.
55 require("webjump.js");
57 function load_spec_from_element (elem) {
59 if (elem instanceof Ci.nsIDOMWindow)
60 spec.document = elem.document;
62 else if (elem instanceof Ci.nsIDOMHTMLFrameElement ||
63 elem instanceof Ci.nsIDOMHTMLIFrameElement)
64 spec.document = elem.contentDocument;
70 if (elem instanceof Ci.nsIDOMHTMLAnchorElement ||
71 elem instanceof Ci.nsIDOMHTMLAreaElement ||
72 elem instanceof Ci.nsIDOMHTMLLinkElement) {
73 if (elem.hasAttribute("href"))
75 title = elem.title || elem.textContent;
77 else if (elem instanceof Ci.nsIDOMHTMLImageElement) {
79 title = elem.title || elem.alt;
83 while (node && !(node instanceof Ci.nsIDOMHTMLAnchorElement))
84 node = node.parentNode;
86 if (node.hasAttribute("href"))
95 if (node.nodeType == Ci.nsIDOMNode.ELEMENT_NODE) {
96 url = node.getAttributeNS(XLINK_NS, "href");
99 node = node.parentNode;
102 url = makeURLAbsolute(node.baseURI, url);
103 title = node.title || node.textContent;
106 if (url && url.length > 0) {
107 if (title && title.length == 0)
110 spec.source_frame = elem.ownerDocument.defaultView;
118 function load_spec (x) {
120 if (typeof(x) == "string")
121 x = get_url_or_webjump(x);
122 if (typeof(x) == "string")
124 else if ((x instanceof Ci.nsIDOMNode) ||
125 (x instanceof Ci.nsIDOMWindow))
127 spec = load_spec_from_element(x);
128 } else if (typeof(x) == "object") {
131 if (! load_spec_uri_string(spec))
132 throw new Error("Invalid load-spec");
133 spec.__proto__ = load_spec.prototype;
136 load_spec.prototype = {};
138 function load_spec_document(x) {
142 function load_spec_element(x) {
146 function load_spec_title(x) {
150 return x.document.title;
154 function load_spec_mime_type(x) {
158 return x.document.contentType || "application/octet-stream";
159 return mime_type_from_uri(load_spec_uri(x));
162 function load_spec_filename(x) {
166 function load_spec_filename_extension(x) {
167 return x.filename_extension;
170 function get_web_navigation_for_frame(frame) {
171 var ifr = frame.QueryInterface(Ci.nsIInterfaceRequestor);
172 return ifr.getInterface(Ci.nsIWebNavigation);
175 function get_SHEntry_for_document(doc)
179 var frame = doc.defaultView;
180 var webNav = get_web_navigation_for_frame(frame);
181 var pageLoader = webNav.QueryInterface(Ci.nsIWebPageDescriptor);
182 var desc = pageLoader.currentDescriptor.QueryInterface(Ci.nsISHEntry);
184 } catch (e) { return null; }
187 function load_spec_set_properties_from_sh_entry(x) {
188 var sh_entry = get_SHEntry_for_document(x.document);
189 if (sh_entry != null) {
190 x.cache_key = sh_entry;
191 x.referrer = sh_entry.referrerURI;
192 x.post_data = sh_entry.postData;
196 function load_spec_referrer(x) {
200 load_spec_set_properties_from_sh_entry(x);
203 if (x.source_frame) {
204 x.referrer = x.source_frame.document.documentURIObject;
210 function load_spec_post_data(x) {
213 if (x.raw_post_data) {
214 let y = x.raw_post_data;
215 if (typeof(y) == "string")
216 y = string_input_stream(y);
217 x.post_data = mime_input_stream(y, [["Content-Type", x.request_mime_type]]);
221 load_spec_set_properties_from_sh_entry(x);
227 function load_spec_raw_post_data(x) {
228 return x.raw_post_data;
231 function load_spec_request_mime_type(x) {
232 return x.request_mime_type;
235 function load_spec_cache_key(x) {
239 load_spec_set_properties_from_sh_entry(x);
245 function load_spec_source_frame(x) {
247 return x.source_frame;
249 return x.document.defaultView;
253 function load_spec_uri_string(x) {
256 if (x.document && x.document.defaultView)
257 return x.document.defaultView.location.href;
259 return x.document.documentURI;
263 function load_spec_uri(x) {
264 if (x.document && x.document.defaultView)
265 return make_uri(x.document.defaultView.location.href);
267 return x.document.documentURIObject;
268 return make_uri(load_spec_uri_string(x));
271 function load_spec_flags(x) {
272 return x.load_spec_flags;
275 function load_spec_mime_info(x) {
276 var type = load_spec_mime_type(x);
277 return mime_info_from_mime_type(type);
280 function load_spec_default_shell_command(x) {
281 var mime_type = load_spec_mime_type(x);
282 return get_mime_type_external_handler(mime_type);
285 function load_spec_forced_charset (x) {
286 return x.forced_charset;
289 define_variable('forced_charset_list', null,
290 "Alist mapping url-regexps to forced charsets. The first match "+
293 /* Target can be either a content_buffer or an nsIWebNavigation */
294 function apply_load_spec(target, spec) {
295 if (! (spec instanceof load_spec))
296 spec = load_spec(spec);
297 var uri = load_spec_uri_string(spec);
298 var flags = load_spec_flags(spec);
299 var referrer = load_spec_referrer(spec);
300 var post_data = load_spec_post_data(spec);
301 var forced_charset = load_spec_forced_charset(spec);
303 if (! forced_charset && forced_charset_list)
304 forced_charset = predicate_alist_match(forced_charset_list, uri);
306 if (forced_charset) {
308 var atomservice = Cc['@mozilla.org/atom-service;1']
309 .getService(Ci.nsIAtomService);
310 target.web_navigation.documentCharsetInfo.forcedCharset =
311 atomservice.getAtom(forced_charset);
316 flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
318 if (target instanceof content_buffer) {
320 target.web_navigation.loadURI(uri, flags, referrer, post_data, null /* headers */);
321 target._display_URI = uri;
322 buffer_description_change_hook.run(target);
324 /* Ignore error for now */
328 target.loadURI(uri, flags, referrer, post_data, null /* headers */);
330 /* Ignore error for now */