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mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2024-12-27 02:20:28 +00:00
TiddlyWiki5/core/modules/pluginswitcher.js
Jermolene c43cd325ca Reduce the inconsistent use of "language" vs. "lingo"
Now we’re just using the word “lingo” for the macro defined in
PageTemplate (where the abbreviation is useful), and using the full
word “language” everywhere else.

It’s possible that we should be using “locale” instead of “language”,
what do you think?
2014-02-15 11:32:11 +00:00

89 lines
2.9 KiB
JavaScript

/*\
title: $:/core/modules/pluginswitcher.js
type: application/javascript
module-type: global
Manages switching plugins for themes and languages.
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
/*
options:
wiki: wiki store to be used
pluginType: type of plugin to be switched
controllerTitle: title of tiddler used to control switching of this resource
defaultPlugins: array of default plugins to be used if nominated plugin isn't found
*/
function PluginSwitcher(options) {
this.wiki = options.wiki;
this.pluginType = options.pluginType;
this.controllerTitle = options.controllerTitle;
this.defaultPlugins = options.defaultPlugins || [];
// Switch to the current plugin
this.switchPlugins();
// Listen for changes to the selected plugin
var self = this;
this.wiki.addEventListener("change",function(changes) {
if($tw.utils.hop(changes,self.controllerTitle)) {
self.switchPlugins();
}
});
}
PluginSwitcher.prototype.switchPlugins = function() {
// Get the name of the current theme
var selectedPluginTitle = this.wiki.getTiddlerText(this.controllerTitle);
// If it doesn't exist, then fallback to one of the default themes
var index = 0;
while(!this.wiki.getTiddler(selectedPluginTitle) && index < this.defaultPlugins.length) {
selectedPluginTitle = this.defaultPlugins[index++];
}
// Accumulate the titles of the plugins that we need to load
var plugins = [],
self = this,
accumulatePlugin = function(title) {
var tiddler = self.wiki.getTiddler(title);
if(tiddler && tiddler.isPlugin() && plugins.indexOf(title) === -1) {
plugins.push(title);
var pluginInfo = JSON.parse(self.wiki.getTiddlerText(title)),
dependents = $tw.utils.parseStringArray(tiddler.fields.dependents || "");
$tw.utils.each(dependents,function(title) {
accumulatePlugin(title);
});
}
};
accumulatePlugin(selectedPluginTitle);
// Unregister any existing theme tiddlers
var unregisteredTiddlers = $tw.wiki.unregisterPluginTiddlers(this.pluginType);
// Accumulate the titles of shadow tiddlers that have changed as a result of this switch
var changedTiddlers = {};
$tw.utils.each(this.wiki.shadowTiddlers,function(shadowInfo,title) {
if(unregisteredTiddlers.indexOf(shadowInfo.source) !== -1) {
changedTiddlers[title] = true; // isDeleted?
}
});
// Register any new theme tiddlers
var registeredTiddlers = $tw.wiki.registerPluginTiddlers(this.pluginType,plugins);
// Unpack the current theme tiddlers
$tw.wiki.unpackPluginTiddlers();
// Accumulate the affected shadow tiddlers
$tw.utils.each(this.wiki.shadowTiddlers,function(shadowInfo,title) {
if(registeredTiddlers.indexOf(shadowInfo.source) !== -1) {
changedTiddlers[title] = false; // isDeleted?
}
});
// Issue change events for the modified tiddlers
$tw.utils.each(changedTiddlers,function(status,title) {
self.wiki.enqueueTiddlerEvent(title,status);
});
};
exports.PluginSwitcher = PluginSwitcher;
})();