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* Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
* http://paperjs.org/
*
* Copyright (c) 2011 - 2020, Jürg Lehni & Jonathan Puckey
* http://juerglehni.com/ & https://puckey.studio/
*
* Distributed under the MIT license. See LICENSE file for details.
*
* All rights reserved.
*/
// TODO: remove eslint-disable comment and deal with errors over time
/* eslint-disable */
import { ref } from '~/globals';
import { Base } from '~/straps';
import { Emitter } from '~/core/Emitter';
/**
* @name PaperScopeItem
*
* @class A private base class for all classes that have lists and references in
* the {@link PaperScope} ({@link Project}, {@link View}, {@link Tool}), so
* functionality can be shared.
*
* @private
*/
export const PaperScopeItem = Base.extend(
Emitter,
/** @lends PaperScopeItem# */ {
/**
* Creates a PaperScopeItem object.
*/
initialize: function (activate) {
// Store reference to the currently active global paper scope:
this._scope = ref.paper;
// Push it onto this._scope[this._list] and set _index:
this._index = this._scope[this._list].push(this) - 1;
// If the project has no active reference, activate this one
if (activate || !this._scope[this._reference]) this.activate();
},
activate: function () {
if (!this._scope) return false;
var prev = this._scope[this._reference];
if (prev && prev !== this) prev.emit('deactivate');
this._scope[this._reference] = this;
this.emit('activate', prev);
return true;
},
isActive: function () {
return this._scope[this._reference] === this;
},
remove: function () {
if (this._index == null) return false;
Base.splice(this._scope[this._list], null, this._index, 1);
// Clear the active tool reference if it was pointint to this.
if (this._scope[this._reference] == this) this._scope[this._reference] = null;
this._scope = null;
return true;
},
getView: function () {
return this._scope.getView();
},
}
);
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