118 lines
3.6 KiB
JavaScript
118 lines
3.6 KiB
JavaScript
var EXPORTED_SYMBOLS = [ "VersionChange" ];
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/AddonManager.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://firetray/logging.jsm");
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let log = firetray.Logger.getLogger("VersionChange");
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/**
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* handles version changes.
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* http://mike.kaply.com/2011/02/02/running-add-on-code-at-first-run-and-upgrade/
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*/
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var VersionChange = {
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initialized: false,
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addonId: null,
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addonVersion: null,
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addOnPrefs: null,
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init: function(id, version, prefBranch) {
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log.debug("VersionChange got: id="+id+" ver="+version+" prefBranch="+prefBranch);
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this.addOnId = id;
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this.addonVersion = version;
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this.addOnPrefs = Services.prefs.getBranch(prefBranch);
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this.initialized = true;
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},
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versionComparator: Cc["@mozilla.org/xpcom/version-comparator;1"]
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.getService(Ci.nsIVersionComparator),
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applyHooksAndWatchUninstall: function() {
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if (!this.initialized) throw "VersionChange not initialized";
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this.onVersionChange(this.addonVersion); // AddonManager.getAddonByID() async, whereas we need sync call
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AddonManager.addAddonListener(this.uninstallListener);
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log.debug("version change watching enabled");
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},
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// we need to remove pref 'installedVersion' on uninstalling to be able to
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// detect reinstall later
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uninstallListener: {
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onUninstalling: function(addon) {
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if (addon.id !== this.addonId) return;
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this.addOnPrefs.clearUserPref("installedVersion");
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},
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onOperationCancelled: function(addon) {
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if (addon.id !== this.addonId) return;
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let beingUninstalled = (addon.pendingOperations & AddonManager.PENDING_UNINSTALL) != 0;
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if (beingUninstalled)
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this.addOnPrefs.clearUserPref("installedVersion");
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}
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},
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onVersionChange: function() {
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log.debug("VERSION: "+this.addonVersion);
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var firstrun = this.addOnPrefs.getBoolPref("firstrun");
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if (firstrun) {
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log.debug("FIRST RUN");
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this.initPrefs();
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this._applyHooks("install");
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} else {
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try {
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var installedVersion = this.addOnPrefs.getCharPref("installedVersion");
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var versionDelta = this.versionComparator.compare(this.addonVersion, installedVersion);
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if (versionDelta > 0) {
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this.addOnPrefs.setCharPref("installedVersion", this.addonVersion);
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log.debug("UPGRADE");
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this._applyHooks("upgrade");
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}
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} catch (ex) {
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log.debug("REINSTALL");
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this.initPrefs();
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this._applyHooks("reinstall");
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}
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}
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},
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initPrefs: function() {
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this.addOnPrefs.setBoolPref("firstrun", false);
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this.addOnPrefs.setCharPref("installedVersion", VersionChange.addonVersion);
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},
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_hooks: [], // collection of callbacks {id: 1, categories: [], fun: function}
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addHook: function(categories, fun) {
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if (Object.prototype.toString.call(categories) !== "[object Array]") throw new TypeError();
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let id = this._hooks.push({})-1;
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this._hooks[id] = {id: id, categories: categories, fun: fun};
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return id;
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},
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removeHook: function(id) {return this._hooks[id].splice(id-1, 1);},
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removeCategoryFromHook: function(category, id) {
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throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
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},
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_applyHooks: function(category) {
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try {
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log.debug("_hooks.len="+this._hooks.length+" category="+category);
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for (let i=0,len=this._hooks.length; i<len; ++i) {
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let cb = this._hooks[i];
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if (cb.categories.indexOf(category) > -1) cb.fun();
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else log.debug("cb id="+cb.id+" not in category: "+cb.categories+"\n"+cb.fun);
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}
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} catch(x){log.error(x);}
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}
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};
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