Sakurai/pdf.js
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Merge pull request #2192 from brendandahl/fix-first-run

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Fix the first run code and make it possible to run multiple times.
This commit is contained in:
Yury Delendik 2012-10-04 14:21:47 -07:00
commit 963fe55203
1 changed files with 62 additions and 19 deletions
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81
extensions/firefox/content/PdfJs.jsm
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@ -23,10 +23,12 @@ const Cu = Components.utils;
const PREF_PREFIX = 'pdfjs';
const PREF_DISABLED = PREF_PREFIX + '.disabled';
const PREF_FIRST_RUN = PREF_PREFIX + '.firstRun';
const PREF_MIGRATION_VERSION = PREF_PREFIX + '.migrationVersion';
const PREF_PREVIOUS_ACTION = PREF_PREFIX + '.previousHandler.preferredAction';
const PREF_PREVIOUS_ASK = PREF_PREFIX + '.previousHandler.alwaysAskBeforeHandling';
const PREF_DISABLED_PLUGIN_TYPES = 'plugin.disable_full_page_plugin_for_types';
const TOPIC_PDFJS_HANDLER_CHANGED = 'pdfjs:handlerChanged';
const PDF_CONTENT_TYPE = 'application/pdf';
Cu.import('resource://gre/modules/XPCOMUtils.jsm');
Cu.import('resource://gre/modules/Services.jsm');
@ -45,6 +47,14 @@ function getBoolPref(aPref, aDefaultValue) {
}
}
function getIntPref(aPref, aDefaultValue) {
try {
return Services.prefs.getIntPref(aPref);
} catch (ex) {
return aDefaultValue;
}
}
// Register/unregister a constructor as a component.
let Factory = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIFactory]),
@ -84,24 +94,8 @@ let PdfJs = {
_registered: false,
init: function init() {
// On first run make pdf.js the default handler.
if (!getBoolPref(PREF_DISABLED, true) && getBoolPref(PREF_FIRST_RUN, false)) {
Services.prefs.setBoolPref(PREF_FIRST_RUN, false);
let handlerInfo = Svc.mime.getFromTypeAndExtension('application/pdf', 'pdf');
// Store the previous settings of preferredAction and
// alwaysAskBeforeHandling in case we need to revert them in a hotfix that
// would turn pdf.js off.
Services.prefs.setIntPref(PREF_PREVIOUS_ACTION, handlerInfo.preferredAction);
Services.prefs.setBoolPref(PREF_PREVIOUS_ASK, handlerInfo.alwaysAskBeforeHandling);
let handlerService = Cc['@mozilla.org/uriloader/handler-service;1'].
getService(Ci.nsIHandlerService);
// Change and save mime handler settings.
handlerInfo.alwaysAskBeforeHandling = false;
handlerInfo.preferredAction = Ci.nsIHandlerInfo.handleInternally;
handlerService.store(handlerInfo);
if (!getBoolPref(PREF_DISABLED, true)) {
this._migrate();
}
if (this.enabled)
@ -115,6 +109,55 @@ let PdfJs = {
Services.obs.addObserver(this, TOPIC_PDFJS_HANDLER_CHANGED, false);
},
_migrate: function migrate() {
const VERSION = 1;
var currentVersion = getIntPref(PREF_MIGRATION_VERSION, 0);
if (currentVersion >= VERSION) {
return;
}
// Make pdf.js the default pdf viewer on the first migration.
if (currentVersion < 2) {
this._becomeHandler();
}
Services.prefs.setIntPref(PREF_MIGRATION_VERSION, VERSION);
},
_becomeHandler: function _becomeHandler() {
let handlerInfo = Svc.mime.getFromTypeAndExtension(PDF_CONTENT_TYPE, 'pdf');
let prefs = Services.prefs;
if (handlerInfo.preferredAction !== Ci.nsIHandlerInfo.handleInternally &&
handlerInfo.preferredAction !== false) {
// Store the previous settings of preferredAction and
// alwaysAskBeforeHandling in case we need to revert them in a hotfix that
// would turn pdf.js off.
prefs.setIntPref(PREF_PREVIOUS_ACTION, handlerInfo.preferredAction);
prefs.setBoolPref(PREF_PREVIOUS_ASK, handlerInfo.alwaysAskBeforeHandling);
}
let handlerService = Cc['@mozilla.org/uriloader/handler-service;1'].
getService(Ci.nsIHandlerService);
// Change and save mime handler settings.
handlerInfo.alwaysAskBeforeHandling = false;
handlerInfo.preferredAction = Ci.nsIHandlerInfo.handleInternally;
handlerService.store(handlerInfo);
// Also disable any plugins for pdfs.
var stringTypes = '';
var types = [];
if (prefs.prefHasUserValue(PREF_DISABLED_PLUGIN_TYPES)) {
stringTypes = prefs.getCharPref(PREF_DISABLED_PLUGIN_TYPES);
}
if (stringTypes !== '') {
types = stringTypes.split(',');
}
if (types.indexOf(PDF_CONTENT_TYPE) === -1) {
types.push(PDF_CONTENT_TYPE);
}
prefs.setCharPref(PREF_DISABLED_PLUGIN_TYPES, types.join(','));
},
// nsIObserver
observe: function observe(aSubject, aTopic, aData) {
if (this.enabled)