62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
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const Lang = imports.lang;
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const Main = imports.ui.main;
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const ComponentManager = new Lang.Class({
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Name: 'ComponentManager',
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_init: function() {
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this._allComponents = {};
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this._enabledComponents = [];
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Main.sessionMode.connect('updated', Lang.bind(this, this._sessionUpdated));
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this._sessionUpdated();
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},
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_sessionUpdated: function() {
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let newEnabledComponents = Main.sessionMode.components;
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newEnabledComponents.filter(Lang.bind(this, function(name) {
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return this._enabledComponents.indexOf(name) == -1;
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})).forEach(Lang.bind(this, function(name) {
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this._enableComponent(name);
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}));
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this._enabledComponents.filter(Lang.bind(this, function(name) {
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return newEnabledComponents.indexOf(name) == -1;
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})).forEach(Lang.bind(this, function(name) {
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this._disableComponent(name);
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}));
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this._enabledComponents = newEnabledComponents;
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},
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_importComponent: function(name) {
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let module = imports.ui.components[name];
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return module.Component;
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},
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_ensureComponent: function(name) {
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let component = this._allComponents[name];
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if (component)
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return component;
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let constructor = this._importComponent(name);
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component = new constructor();
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this._allComponents[name] = component;
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return component;
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},
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_enableComponent: function(name) {
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let component = this._ensureComponent(name);
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component.enable();
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},
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_disableComponent: function(name) {
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let component = this._allComponents[name];
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if (component == null)
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return;
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component.disable();
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}
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});
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