modules/page-modes/google-images.js

   1 /**
   2  * (C) Copyright 2009 John J. Foerch
   3  *
   4  * Use, modification, and distribution are subject to the terms specified in the
   5  * COPYING file.
   6 **/
   7
   8 /**
   9  * Google Images Mode
  10  *
  11  *   Provides browser-object overrides for various commands at
  12  * google-images, to follow directly to the page that contains an
  13  * image, or directly save the full-size image.  Never see that
  14  * annoying frameset page from google again!
  15  */
  16
  17 define_variable('google_images_imgrefurl_commands',
  18                 ["follow", "follow-new-buffer",
  19                  "follow-new-buffer-background",
  20                  "follow-new-window", "copy"],
  21     "List of commands for which the google-images-imgrefurl browser object "+
  22     "should be used in Google Images Mode");
  23
  24 define_variable('google_images_imgurl_commands',
  25                 ["save", "shell-command-on-file"],
  26     "List of commands for which the google-images-imgurl browser object "+
  27     "should be used in Google Images Mode");
  28
  29 function google_images_get_image_uri (I, prompt) {
  30     var result = yield I.buffer.window.minibuffer.read_hinted_element(
  31         $buffer = I.buffer,
  32         $prompt = prompt,
  33         $hint_xpath_expression = "//a[img]");
  34     if (result instanceof Ci.nsIDOMHTMLElement) {
  35         var u = Cc["@mozilla.org/network/standard-url;1"]
  36             .createInstance(Ci.nsIURL);
  37         u.spec = result.href;
  38         yield co_return(u);
  39     } else
  40         yield co_return(result);
  41 }
  42
  43 define_browser_object_class("google-images-imgrefurl", null,
  44     function (I, prompt) {
  45         var u = yield google_images_get_image_uri(I, prompt);
  46         if (u instanceof Ci.nsIURL) {
  47             var imgrefurl = unescape(u.query.match(/&imgrefurl=([^&]*)/)[1]);
  48             yield co_return(imgrefurl);
  49         } else
  50             yield co_return(u);
  51     });
  52
  53 define_browser_object_class("google-images-imgurl", null,
  54     function (I, prompt) {
  55         var u = yield google_images_get_image_uri(I, prompt);
  56         if (u instanceof Ci.nsIURL) {
  57             var imgurl = unescape(u.query.match(/imgurl=([^&]*)/)[1]);
  58             yield co_return(imgurl);
  59         } else
  60             yield co_return(u);
  61     });
  62
  63 define_page_mode("google-images-mode",
  64     build_url_regexp($domain = /(.*\.)?google/, $path = "images"),
  65     function enable (buffer) {
  66         for each (var c in google_images_imgrefurl_commands) {
  67             buffer.default_browser_object_classes[c] =
  68                 browser_object_google_images_imgrefurl;
  69         }
  70         for each (var c in google_images_imgurl_commands) {
  71             buffer.default_browser_object_classes[c] =
  72                 browser_object_google_images_imgurl;
  73         }
  74     },
  75     function disable (buffer) {
  76         for each (var c in google_images_imgrefurl_commands) {
  77             delete buffer.default_browser_object_classes[c];
  78         }
  79         for each (var c in google_images_imgurl_commands) {
  80             delete buffer.default_browser_object_classes[c];
  81         }
  82     },
  83     $display_name = "Google Images");
  84
  85 page_mode_activate(google_images_mode);
  86
  87 provide("google-images");