gecko/b2g/components/ContentPermissionPrompt.js

74 lines
2.1 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;
const Cc = Components.classes;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
function ContentPermissionPrompt() {}
ContentPermissionPrompt.prototype = {
handleExistingPermission: function handleExistingPermission(request) {
let result = Services.perms.testExactPermission(request.uri, request.type);
if (result == Ci.nsIPermissionManager.ALLOW_ACTION) {
request.allow();
return true;
}
if (result == Ci.nsIPermissionManager.DENY_ACTION) {
request.cancel();
return true;
}
return false;
},
_id: 0,
prompt: function(request) {
// returns true if the request was handled
if (this.handleExistingPermission(request))
return;
let browser = Services.wm.getMostRecentWindow("navigator:browser");
let content = browser.getContentWindow();
if (!content)
return;
let requestId = this._id++;
content.addEventListener("mozContentEvent", function contentEvent(evt) {
if (evt.detail.id != requestId)
return;
evt.target.removeEventListener(evt.type, contentEvent);
if (evt.detail.type == "permission-allow") {
request.allow();
return;
}
request.cancel();
});
let details = {
"type": "permission-prompt",
"permission": request.type,
"id": requestId,
"url": request.uri.spec
};
let event = content.document.createEvent("CustomEvent");
event.initCustomEvent("mozChromeEvent", true, true, details);
content.dispatchEvent(event);
},
classID: Components.ID("{8c719f03-afe0-4aac-91ff-6c215895d467}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPermissionPrompt])
};
//module initialization
const NSGetFactory = XPCOMUtils.generateNSGetFactory([ContentPermissionPrompt]);