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/* Copyright 2012 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* jshint esnext:true */
/* globals Components, Services, XPCOMUtils */
'use strict';
var EXPORTED_SYMBOLS = ['PdfjsContentUtils'];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;
Cu.import('resource://gre/modules/XPCOMUtils.jsm');
Cu.import('resource://gre/modules/Services.jsm');
var PdfjsContentUtils = {
_mm: null,
/*
* Public API
*/
get isRemote() {
return (Services.appinfo.processType ===
Services.appinfo.PROCESS_TYPE_CONTENT);
},
init: function () {
// child *process* mm, or when loaded into the parent for in-content
// support the psuedo child process mm 'child PPMM'.
if (!this._mm) {
this._mm = Cc['@mozilla.org/childprocessmessagemanager;1'].
getService(Ci.nsISyncMessageSender);
this._mm.addMessageListener('PDFJS:Child:refreshSettings', this);
Services.obs.addObserver(this, 'quit-application', false);
}
},
uninit: function () {
if (this._mm) {
this._mm.removeMessageListener('PDFJS:Child:refreshSettings', this);
Services.obs.removeObserver(this, 'quit-application');
}
this._mm = null;
},
/*
* prefs utilities - the child does not have write access to prefs.
* note, the pref names here are cross-checked against a list of
* approved pdfjs prefs in chrome utils.
*/
clearUserPref: function (aPrefName) {
this._mm.sendSyncMessage('PDFJS:Parent:clearUserPref', {
name: aPrefName
});
},
setIntPref: function (aPrefName, aPrefValue) {
this._mm.sendSyncMessage('PDFJS:Parent:setIntPref', {
name: aPrefName,
value: aPrefValue
});
},
setBoolPref: function (aPrefName, aPrefValue) {
this._mm.sendSyncMessage('PDFJS:Parent:setBoolPref', {
name: aPrefName,
value: aPrefValue
});
},
setCharPref: function (aPrefName, aPrefValue) {
this._mm.sendSyncMessage('PDFJS:Parent:setCharPref', {
name: aPrefName,
value: aPrefValue
});
},
setStringPref: function (aPrefName, aPrefValue) {
this._mm.sendSyncMessage('PDFJS:Parent:setStringPref', {
name: aPrefName,
value: aPrefValue
});
},
/*
* Forwards default app query to the parent where we check various
* handler app settings only available in the parent process.
*/
isDefaultHandlerApp: function () {
return this._mm.sendSyncMessage('PDFJS:Parent:isDefaultHandlerApp')[0];
},
/*
* Request the display of a notification warning in the associated window
* when the renderer isn't sure a pdf displayed correctly.
*/
displayWarning: function (aWindow, aMessage, aLabel, accessKey) {
// the child's dom frame mm associated with the window.
let winmm = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDocShell)
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIContentFrameMessageManager);
winmm.sendAsyncMessage('PDFJS:Parent:displayWarning', {
message: aMessage,
label: aLabel,
accessKey: accessKey
});
},
/*
* Events
*/
observe: function(aSubject, aTopic, aData) {
if (aTopic === 'quit-application') {
this.uninit();
}
},
receiveMessage: function (aMsg) {
switch (aMsg.name) {
case 'PDFJS:Child:refreshSettings':
// Only react to this if we are remote.
if (Services.appinfo.processType ===
Services.appinfo.PROCESS_TYPE_CONTENT) {
let jsm = 'resource://pdf.js/PdfJs.jsm';
let pdfjs = Components.utils.import(jsm, {}).PdfJs;
pdfjs.updateRegistration();
}
break;
}
}
};
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