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