56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
/*
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* Copyright (C) 2019 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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class DisplayContext {
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constructor(type, definitions, context) {
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this.type = type;
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this.definitions = definitions;
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this.context = context;
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}
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get(key) {
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return this.context[key];
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}
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set(key, value) {
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this.context[key] = value;
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}
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update(data) {
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Object.assign(this.context, data);
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}
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get previous() {
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return this.context.previous;
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}
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get next() {
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return this.context.next;
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}
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static push(self, type, definitions, context) {
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const newContext = new DisplayContext(type, definitions, context);
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if (self !== null) {
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newContext.update({previous: self});
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self.update({next: newContext});
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}
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return newContext;
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}
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}
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