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         "FOS": {
  70             "iface": Components.interfaces.nsIFileOutputStream,
  71             "cls": "@mozilla.org/network/file-output-stream;1"
  72         },
  73         "create": function(key) {
  74             return Components.classes[this[key].cls].
  75                 createInstance(this[key].iface);
  76         },
  77         "getPrivilegeManager": function() {
  78             return netscape.security.PrivilegeManager;
  79         }
  80     };
  81
  82     openils.XUL.contentFromFileOpenDialog = function(windowTitle, sizeLimit) {
  83         var api = new openils.XUL.SimpleXPCOM();
  84
  85         /* The following enablePrivilege() call must happen at this exact
  86          * level of scope -- not wrapped in another function -- otherwise
  87          * it doesn't work. */
  88         api.getPrivilegeManager().enablePrivilege("UniversalXPConnect");
  89
  90         var picker = api.create("FP");
  91         picker.init(
  92             window, windowTitle || "Upload File", api.FP.iface.modeOpen
  93         );
  94         if (picker.show() == api.FP.iface.returnOK && picker.file) {
  95             var fis = api.create("FIS");
  96             var sis = api.create("SIS");
  97
  98             fis.init(picker.file, 1 /* MODE_RDONLY */, 0, 0);
  99             sis.init(fis);
 100
 101             return sis.read(sizeLimit || -1);
 102         } else {
 103             return null;
 104         }
 105     };
 106
 107     openils.XUL.contentToFileSaveDialog = function(content, windowTitle) {
 108         var api = new openils.XUL.SimpleXPCOM();
 109         api.getPrivilegeManager().enablePrivilege("UniversalXPConnect");
 110
 111         var picker = api.create("FP");
 112         picker.init(
 113             window, windowTitle || "Save File", api.FP.iface.modeSave
 114         );
 115         var result = picker.show();
 116         if (picker.file &&
 117                 (result == api.FP.iface.returnOK ||
 118                     result == api.FP.iface.returnReplace)) {
 119             if (!picker.file.exists())
 120                 picker.file.create(0, 0644); /* XXX hardcoded = bad */
 121             var fos = api.create("FOS");
 122             fos.init(picker.file, 42 /* WRONLY | CREAT | TRUNCATE */, 0644, 0);
 123             return fos.write(content, content.length);
 124         } else {
 125             return 0;
 126         }
 127     };
 128 }