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Text File  |  2006-05-15  |  2.2 KB  |  77 lines
  1. function G_NavWatcher(opt_filterSpurious) {
  2. this.debugZone = "navwatcher";
  3. this.filterSpurious_ = !!opt_filterSpurious;
  4. this.events = G_NavWatcher.events;            // Convenience pointer
  5. this.registrar_ = new EventRegistrar(this.events);
  6. var wp = Ci.nsIWebProgress;
  7. var wpService = Cc["@mozilla.org/docloaderservice;1"].getService(wp);
  8. wpService.addProgressListener(this, wp.NOTIFY_STATE_ALL);
  9. }
  10. G_NavWatcher.events = {
  11. DOCNAVSTART: "docnavstart",
  12. };
  13. G_NavWatcher.prototype.QueryInterface = function(iid) {
  14. if (iid.equals(Ci.nsISupports) ||
  15. iid.equals(Ci.nsIWebProgressListener) ||
  16. iid.equals(Ci.nsISupportsWeakReference))
  17. return this;
  18. throw Components.results.NS_ERROR_NO_INTERFACE;
  19. }
  20. G_NavWatcher.prototype.registerListener = function(eventType,
  21. listener) {
  22. this.registrar_.registerListener(eventType, listener);
  23. }
  24. G_NavWatcher.prototype.removeListener = function(eventType,
  25. listener) {
  26. this.registrar_.removeListener(eventType, listener);
  27. }
  28. G_NavWatcher.prototype.fire = function(eventType, e) {
  29. this.registrar_.fire(eventType, e);
  30. }
  31. G_NavWatcher.prototype.isSpurious_ = function(url) {
  32. return (url == "about:blank" ||
  33. url == "about:config" ||
  34. url.indexOf("chrome://") == 0 ||
  35. url.indexOf("file://") == 0 ||
  36. url.indexOf("jar:") == 0);
  37. }
  38. G_NavWatcher.prototype.onStateChange = function(webProgress,
  39. request,
  40. stateFlags,
  41. status) {
  42. var wp = Ci.nsIWebProgressListener;
  43. if (stateFlags & wp.STATE_START &&
  44. stateFlags & wp.STATE_IS_REQUEST &&
  45. request.loadFlags & Ci.nsIChannel.LOAD_DOCUMENT_URI) {
  46. var url;
  47. try {
  48. url = request.name;
  49. } catch(e) { return; }
  50. if (!this.filterSpurious_ || !this.isSpurious_(url)) {
  51. G_Debug(this, "firing docnavstart for " + url);
  52. var eventObj = {
  53. "request": request,
  54. "url": url,
  55. };
  56. this.fire(this.events.DOCNAVSTART, eventObj);
  57. }
  58. }
  59. }
  60. G_NavWatcher.prototype.onLocationChange = function(webProgress,
  61. request,
  62. location) { }
  63. G_NavWatcher.prototype.onProgressChange = function(webProgress,
  64. request,
  65. curSelfProgress,
  66. maxSelfProgress,
  67. curTotalProgress,
  68. maxTotalProgress) { }
  69. G_NavWatcher.prototype.onSecurityChange = function(webProgress,
  70. request,
  71. state) { }
  72. G_NavWatcher.prototype.onStatusChange = function(webProgress,
  73. request,
  74. status,
  75. message) { }
  76. G_NavWatcher.prototype.onLinkIconAvailable = function(browser, aHref) { }
  77.