mirror of
https://github.com/ManchildProductions/UXP-Fixed.git
synced 2026-06-11 00:09:16 +00:00
Matt A. Tobin
97 lines
2.5 KiB
JavaScript
97 lines
2.5 KiB
JavaScript
/*
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* Copyright 2012, Mozilla Foundation and contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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var util = require('../util/util');
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var Field = require('./fields').Field;
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/**
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* A field that works with delegate types by delaying resolution until that
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* last possible time
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*/
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function DelegateField(type, options) {
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Field.call(this, type, options);
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this.options = options;
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this.element = util.createElement(this.document, 'div');
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this.update();
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this.onFieldChange = util.createEvent('DelegateField.onFieldChange');
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}
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DelegateField.prototype = Object.create(Field.prototype);
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DelegateField.prototype.update = function() {
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var subtype = this.type.getType(this.options.requisition.executionContext);
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if (typeof subtype.parse !== 'function') {
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subtype = this.options.requisition.system.types.createType(subtype);
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}
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// It's not clear that we can compare subtypes in this way.
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// Perhaps we need a type.equals(...) function
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if (subtype === this.subtype) {
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return;
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}
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if (this.field) {
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this.field.destroy();
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}
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this.subtype = subtype;
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var fields = this.options.requisition.system.fields;
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this.field = fields.get(subtype, this.options);
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util.clearElement(this.element);
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this.element.appendChild(this.field.element);
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};
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DelegateField.claim = function(type, context) {
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return type.isDelegate ? Field.MATCH : Field.NO_MATCH;
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};
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DelegateField.prototype.destroy = function() {
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this.element = undefined;
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this.options = undefined;
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if (this.field) {
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this.field.destroy();
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}
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this.subtype = undefined;
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Field.prototype.destroy.call(this);
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};
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DelegateField.prototype.setConversion = function(conversion) {
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this.field.setConversion(conversion);
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};
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DelegateField.prototype.getConversion = function() {
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return this.field.getConversion();
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};
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Object.defineProperty(DelegateField.prototype, 'isImportant', {
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get: function() {
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return this.field.isImportant;
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},
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enumerable: true
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});
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/**
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* Exported items
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*/
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exports.items = [
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DelegateField
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];
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