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 page_fragment_load_spec (elem) {
58 var uri = makeURLAbsolute(elem.ownerDocument.documentURI,
59 "#" + (elem.id || elem.name));
60 var title = elem.ownerDocument.title;
61 if (elem.textContent) {
62 if (title) title += ' - ';
63 title += elem.textContent;
72 function load_spec_from_element (elem) {
74 if (elem instanceof Ci.nsIDOMWindow)
75 spec.document = elem.document;
77 else if (elem instanceof Ci.nsIDOMHTMLFrameElement ||
78 elem instanceof Ci.nsIDOMHTMLIFrameElement)
79 spec.document = elem.contentDocument;
85 if ((elem instanceof Ci.nsIDOMHTMLAnchorElement ||
86 elem instanceof Ci.nsIDOMHTMLAreaElement ||
87 elem instanceof Ci.nsIDOMHTMLLinkElement) &&
88 elem.hasAttribute("href"))
91 title = elem.title || elem.textContent;
93 else if (elem instanceof Ci.nsIDOMHTMLImageElement) {
95 title = elem.title || elem.alt;
97 else if (elem.hasAttribute("id") ||
98 (elem instanceof Ci.nsIDOMHTMLAnchorElement &&
99 elem.hasAttribute("name"))) {
100 return page_fragment_load_spec(elem);
104 while (node && !(node instanceof Ci.nsIDOMHTMLAnchorElement))
105 node = node.parentNode;
107 if (node.hasAttribute("href"))
116 if (node.nodeType == Ci.nsIDOMNode.ELEMENT_NODE) {
117 url = node.getAttributeNS(XLINK_NS, "href");
120 node = node.parentNode;
123 url = makeURLAbsolute(node.baseURI, url);
124 title = node.title || node.textContent;
127 if (url && url.length > 0) {
128 if (title && title.length == 0)
131 spec.source_frame = elem.ownerDocument.defaultView;
139 function load_spec (x) {
141 if (typeof(x) == "string")
142 x = get_url_or_webjump(x);
143 if (typeof(x) == "string")
145 else if ((x instanceof Ci.nsIDOMNode) ||
146 (x instanceof Ci.nsIDOMWindow))
148 spec = load_spec_from_element(x);
149 } else if (typeof(x) == "object") {
152 if (! load_spec_uri_string(spec))
153 throw new Error("Invalid load-spec");
154 spec.__proto__ = load_spec.prototype;
157 load_spec.prototype = {};
159 function load_spec_document (x) {
163 function load_spec_element (x) {
167 function load_spec_title (x) {
171 return x.document.title;
175 function load_spec_mime_type (x) {
179 return x.document.contentType || "application/octet-stream";
180 return mime_type_from_uri(load_spec_uri(x));
183 function load_spec_filename (x) {
187 function load_spec_filename_extension (x) {
188 return x.filename_extension;
191 function get_web_navigation_for_frame (frame) {
192 var ifr = frame.QueryInterface(Ci.nsIInterfaceRequestor);
193 return ifr.getInterface(Ci.nsIWebNavigation);
196 function get_SHEntry_for_document (doc) {
198 var frame = doc.defaultView;
199 var webNav = get_web_navigation_for_frame(frame);
200 var pageLoader = webNav.QueryInterface(Ci.nsIWebPageDescriptor);
201 var desc = pageLoader.currentDescriptor.QueryInterface(Ci.nsISHEntry);
203 } catch (e) { return null; }
206 function load_spec_set_properties_from_sh_entry (x) {
207 var sh_entry = get_SHEntry_for_document(x.document);
208 if (sh_entry != null) {
209 x.cache_key = sh_entry;
210 x.referrer = sh_entry.referrerURI;
211 x.post_data = sh_entry.postData;
215 function load_spec_referrer (x) {
219 load_spec_set_properties_from_sh_entry(x);
222 if (x.source_frame) {
223 x.referrer = x.source_frame.document.documentURIObject;
229 function load_spec_post_data (x) {
232 if (x.raw_post_data) {
233 let y = x.raw_post_data;
234 if (typeof(y) == "string")
235 y = string_input_stream(y);
236 x.post_data = mime_input_stream(y, [["Content-Type", x.request_mime_type]]);
240 load_spec_set_properties_from_sh_entry(x);
246 function load_spec_raw_post_data (x) {
247 return x.raw_post_data;
250 function load_spec_request_mime_type (x) {
251 return x.request_mime_type;
254 function load_spec_cache_key (x) {
258 load_spec_set_properties_from_sh_entry(x);
264 function load_spec_source_frame (x) {
266 return x.source_frame;
268 return x.document.defaultView;
272 function load_spec_uri_string (x) {
275 if (x.document && x.document.defaultView)
276 return x.document.defaultView.location.href;
278 return x.document.documentURI;
282 function load_spec_uri (x) {
283 if (x.document && x.document.defaultView)
284 return make_uri(x.document.defaultView.location.href);
286 return x.document.documentURIObject;
287 return make_uri(load_spec_uri_string(x));
290 function load_spec_flags (x) {
291 return x.load_spec_flags;
294 function load_spec_mime_info (x) {
295 var type = load_spec_mime_type(x);
296 return mime_info_from_mime_type(type);
299 function load_spec_default_shell_command (x) {
300 var mime_type = load_spec_mime_type(x);
301 return external_content_handlers.get(mime_type);
304 function load_spec_forced_charset (x) {
305 return x.forced_charset;
308 define_variable('forced_charset_list', null,
309 "Alist mapping url-regexps to forced charsets. The first match "+
312 /* Target can be either a content_buffer or an nsIWebNavigation */
313 function apply_load_spec (target, spec) {
314 if (! (spec instanceof load_spec))
315 spec = load_spec(spec);
316 var uri = load_spec_uri_string(spec);
317 var flags = load_spec_flags(spec);
318 var referrer = load_spec_referrer(spec);
319 var post_data = load_spec_post_data(spec);
320 var forced_charset = load_spec_forced_charset(spec);
322 if (! forced_charset && forced_charset_list)
323 forced_charset = predicate_alist_match(forced_charset_list, uri);
325 if (forced_charset) {
327 var atomservice = Cc['@mozilla.org/atom-service;1']
328 .getService(Ci.nsIAtomService);
329 target.web_navigation.documentCharsetInfo.forcedCharset =
330 atomservice.getAtom(forced_charset);
335 flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
337 if (target instanceof content_buffer) {
339 target.web_navigation.loadURI(uri, flags, referrer, post_data, null /* headers */);
340 target._display_uri = uri;
341 buffer_description_change_hook.run(target);
343 /* Ignore error for now */
347 target.loadURI(uri, flags, referrer, post_data, null /* headers */);
349 /* Ignore error for now */