Open-ILS/web/js/dojo/openils/XUL.js

   1 if(!dojo._hasResource["openils.XUL"]) {
   2
   3     dojo.provide("openils.XUL");
   4     dojo.require('dojo.cookie');
   5     dojo.declare('openils.XUL', null, {});
   6
   7     openils.XUL.isXUL = function() {
   8         return Boolean(dojo.cookie('xul')) || Boolean(window.IAMXUL);
   9     }
  10
  11     openils.XUL.buildId = function() {
  12         return window.XUL_BUILD_ID || '';
  13     }
  14
  15     openils.XUL.getStash = function() {
  16         if(openils.XUL.isXUL()) {
  17             try {
  18                 if(openils.XUL.enableXPConnect()) {
  19                                 var CacheClass = new Components.Constructor("@mozilla.org/openils_data_cache;1", "nsIOpenILS");
  20                                 return new CacheClass().wrappedJSObject.OpenILS.prototype.data;
  21                 }
  22             } catch(e) {
  23                 console.log("Error loading XUL stash: " + e);
  24             }
  25         }
  26
  27         return {};
  28     }
  29
  30     openils.XUL.newTab = function(path, tabInfo, options) {
  31         if(xulG == undefined)
  32             throw new Error('xulG is not defined.  Cannot open tab');
  33         xulG.new_tab(path, tabInfo, options);
  34     }
  35
  36     /**
  37      * This can be used by privileged Firefox in addition to XUL.
  38      * To use use in Firefox directly, set signed.applets.codebase_principal_support to true in about:config
  39      */
  40     openils.XUL.enableXPConnect = function() {
  41         try {
  42             netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
  43         } catch (E) {
  44             if(dojo.isFF) {
  45                 console.error("Unable to enable UniversalXPConnect privileges.  " +
  46                     "Try setting 'signed.applets.codebase_principal_support' to true in about:config");
  47             }
  48             return false;
  49         }
  50         return true;
  51     }
  52
  53     /* This class cuts down on the obscenely long incantations needed to
  54      * use XPCOM components. */
  55     openils.XUL.SimpleXPCOM = function() {};
  56     openils.XUL.SimpleXPCOM.prototype = {
  57         "FP": {
  58             "iface": Components.interfaces.nsIFilePicker,
  59             "cls": "@mozilla.org/filepicker;1"
  60         },
  61         "FIS": {
  62             "iface": Components.interfaces.nsIFileInputStream,
  63             "cls": "@mozilla.org/network/file-input-stream;1"
  64         },
  65         "SIS": {
  66             "iface": Components.interfaces.nsIScriptableInputStream,
  67             "cls": "@mozilla.org/scriptableinputstream;1"
  68         },
  69         "create": function(key) {
  70             return Components.classes[this[key].cls].
  71                 createInstance(this[key].iface);
  72         },
  73         "getPrivilegeManager": function() {
  74             return netscape.security.PrivilegeManager;
  75         }
  76     };
  77
  78     openils.XUL.contentFromFileOpenDialog = function(windowTitle) {
  79         try {
  80             var api = new openils.XUL.SimpleXPCOM();
  81
  82             /* The following enablePrivilege() call must happen at this exact
  83              * level of scope -- not wrapped in another function -- otherwise
  84              * it doesn't work. */
  85             api.getPrivilegeManager().enablePrivilege("UniversalXPConnect");
  86
  87             var picker = api.create("FP");
  88             picker.init(
  89                 window, windowTitle || "Upload File", api.FP.iface.modeOpen
  90             );
  91             if (picker.show() == api.FP.iface.returnOK && picker.file) {
  92                 var fis = api.create("FIS");
  93                 var sis = api.create("SIS");
  94
  95                 fis.init(picker.file, 1 /* MODE_RDONLY */, 0, 0);
  96                 sis.init(fis);
  97
  98                 return sis.read(-1);
  99             } else {
 100                 return null;
 101             }
 102         } catch(E) {
 103             alert(E);
 104             return null;
 105         }
 106     };
 107 }