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Code Issues Releases Wiki Activity

Dynamic loading/unloading of plugins (#4259)

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* First pass at dynamic loading/unloading

* Show warning for changes to plugins containing JS modules

* Use $:/config/RegisterPluginType/* for configuring whether a plugin type is automatically registered

Where "registered" means "the constituent shadows are loaded".

* Fix the info plugin

The previous mechanism re-read all plugin info during startup

* Don't prettify JSON in the plugin library

* Indicate in plugin library whether a plugin requires reloading

* Display the highlighted plugin name in the plugin chooser

And if there's no name field fall back to the part of the title after the final slash.
This commit is contained in:
Jeremy Ruston
2019-09-16 12:15:39 +01:00
committed by GitHub
parent b44dc39299
commit 1c23059204
11 changed files with 145 additions and 24 deletions
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55
boot/boot.js
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@@ -1237,15 +1237,39 @@ $tw.Wiki = function(options) {
return null;
};
// Read plugin info for all plugins
this.readPluginInfo = function() {
for(var title in tiddlers) {
var tiddler = tiddlers[title];
if(tiddler.fields.type === "application/json" && tiddler.hasField("plugin-type")) {
pluginInfo[tiddler.fields.title] = JSON.parse(tiddler.fields.text);
// Get an array of all the currently recognised plugin types
this.getPluginTypes = function() {
var types = [];
$tw.utils.each(pluginTiddlers,function(pluginTiddler) {
var pluginType = pluginTiddler.fields["plugin-type"];
if(pluginType && types.indexOf(pluginType) === -1) {
types.push(pluginType);
}
});
return types;
};
}
// Read plugin info for all plugins, or just an array of titles. Returns the number of plugins updated or deleted
this.readPluginInfo = function(titles) {
var results = {
modifiedPlugins: [],
deletedPlugins: []
};
$tw.utils.each(titles || getTiddlerTitles(),function(title) {
var tiddler = tiddlers[title];
if(tiddler) {
if(tiddler.fields.type === "application/json" && tiddler.hasField("plugin-type")) {
pluginInfo[tiddler.fields.title] = JSON.parse(tiddler.fields.text);
results.modifiedPlugins.push(tiddler.fields.title);
}
} else {
if(pluginInfo[title]) {
delete pluginInfo[title];
results.deletedPlugins.push(title);
}
}
});
return results;
};
// Get plugin info for a plugin
@@ -1253,14 +1277,15 @@ $tw.Wiki = function(options) {
return pluginInfo[title];
};
// Register the plugin tiddlers of a particular type, optionally restricting registration to an array of tiddler titles. Return the array of titles affected
// Register the plugin tiddlers of a particular type, or null/undefined for any type, optionally restricting registration to an array of tiddler titles. Return the array of titles affected
this.registerPluginTiddlers = function(pluginType,titles) {
var self = this,
registeredTitles = [],
checkTiddler = function(tiddler,title) {
if(tiddler && tiddler.fields.type === "application/json" && tiddler.fields["plugin-type"] === pluginType) {
if(tiddler && tiddler.fields.type === "application/json" && tiddler.fields["plugin-type"] && (!pluginType || tiddler.fields["plugin-type"] === pluginType)) {
var disablingTiddler = self.getTiddler("$:/config/Plugins/Disabled/" + title);
if(title === "$:/core" || !disablingTiddler || (disablingTiddler.fields.text || "").trim() !== "yes") {
self.unregisterPluginTiddlers(null,[title]); // Unregister the plugin if it's already registered
pluginTiddlers.push(tiddler);
registeredTitles.push(tiddler.fields.title);
}
@@ -1278,19 +1303,19 @@ $tw.Wiki = function(options) {
return registeredTitles;
};
// Unregister the plugin tiddlers of a particular type, returning an array of the titles affected
this.unregisterPluginTiddlers = function(pluginType) {
// Unregister the plugin tiddlers of a particular type, or null/undefined for any type, optionally restricting unregistering to an array of tiddler titles. Returns an array of the titles affected
this.unregisterPluginTiddlers = function(pluginType,titles) {
var self = this,
titles = [];
unregisteredTitles = [];
// Remove any previous registered plugins of this type
for(var t=pluginTiddlers.length-1; t>=0; t--) {
var tiddler = pluginTiddlers[t];
if(tiddler.fields["plugin-type"] === pluginType) {
titles.push(tiddler.fields.title);
if(tiddler.fields["plugin-type"] && (!pluginType || tiddler.fields["plugin-type"] === pluginType) && (!titles || titles.indexOf(tiddler.fields.title) !== -1)) {
unregisteredTitles.push(tiddler.fields.title);
pluginTiddlers.splice(t,1);
}
}
return titles;
return unregisteredTitles;
};
// Unpack the currently registered plugins, creating shadow tiddlers for their constituent tiddlers