86 lines
3.0 KiB
JavaScript
86 lines
3.0 KiB
JavaScript
/*\
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title: $:/core/modules/startup/plugins.js
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type: application/javascript
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module-type: startup
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Startup logic concerned with managing plugins
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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// Export name and synchronous status
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exports.name = "plugins";
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exports.after = ["load-modules"];
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exports.before = ["startup"];
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exports.synchronous = true;
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var TITLE_REQUIRE_RELOAD_DUE_TO_PLUGIN_CHANGE = "$:/status/RequireReloadDueToPluginChange";
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var PREFIX_CONFIG_REGISTER_PLUGIN_TYPE = "$:/config/RegisterPluginType/";
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exports.startup = function() {
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$tw.wiki.addTiddler({title: TITLE_REQUIRE_RELOAD_DUE_TO_PLUGIN_CHANGE,text: "no"});
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$tw.wiki.addEventListener("change",function(changes) {
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// Work out which of the changed tiddlers are plugins that we need to reregister
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var changesToProcess = [],
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requireReloadDueToPluginChange = false;
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$tw.utils.each(Object.keys(changes),function(title) {
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var tiddler = $tw.wiki.getTiddler(title),
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requiresReload = $tw.wiki.doesPluginRequireReload(title);
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if(requiresReload) {
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requireReloadDueToPluginChange = true;
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} else if(tiddler) {
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var pluginType = tiddler.fields["plugin-type"];
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if($tw.wiki.getTiddlerText(PREFIX_CONFIG_REGISTER_PLUGIN_TYPE + (tiddler.fields["plugin-type"] || ""),"no") === "yes") {
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changesToProcess.push(title);
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}
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}
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});
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// Issue warning if any of the tiddlers require a reload
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if(requireReloadDueToPluginChange) {
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$tw.wiki.addTiddler({title: TITLE_REQUIRE_RELOAD_DUE_TO_PLUGIN_CHANGE,text: "yes"});
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}
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// Read or delete the plugin info of the changed tiddlers
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if(changesToProcess.length > 0) {
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var changes = $tw.wiki.readPluginInfo(changesToProcess);
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if(changes.modifiedPlugins.length > 0 || changes.deletedPlugins.length > 0) {
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var changedShadowTiddlers = {};
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// Collect the shadow tiddlers of any deleted plugins
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$tw.utils.each(changes.deletedPlugins,function(pluginTitle) {
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var pluginInfo = $tw.wiki.getPluginInfo(pluginTitle);
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if(pluginInfo) {
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$tw.utils.each(Object.keys(pluginInfo.tiddlers),function(title) {
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changedShadowTiddlers[title] = true;
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});
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}
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});
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// Collect the shadow tiddlers of any modified plugins
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$tw.utils.each(changes.modifiedPlugins,function(pluginTitle) {
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var pluginInfo = $tw.wiki.getPluginInfo(pluginTitle);
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if(pluginInfo) {
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$tw.utils.each(Object.keys(pluginInfo.tiddlers),function(title) {
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changedShadowTiddlers[title] = false;
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});
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}
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});
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// (Re-)register any modified plugins
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$tw.wiki.registerPluginTiddlers(null,changes.modifiedPlugins);
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// Unregister any deleted plugins
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$tw.wiki.unregisterPluginTiddlers(null,changes.deletedPlugins);
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// Unpack the shadow tiddlers
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$tw.wiki.unpackPluginTiddlers();
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// Queue change events for the changed shadow tiddlers
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$tw.utils.each(Object.keys(changedShadowTiddlers),function(title) {
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$tw.wiki.enqueueTiddlerEvent(title,changedShadowTiddlers[title]);
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});
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}
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}
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});
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};
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})();
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