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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/**
* Store of CSSStyleDeclarations mapped to properties that have been changed by
* the user.
*/
class UserProperties {
constructor() {
this.map = new Map();
}
/**
* Get a named property for a given CSSStyleDeclaration.
*
* @param {CSSStyleDeclaration} style
* The CSSStyleDeclaration against which the property is mapped.
* @param {String} name
* The name of the property to get.
* @param {String} value
* Default value.
* @return {String}
* The property value if it has previously been set by the user, null
* otherwise.
*/
getProperty(style, name, value) {
const key = this.getKey(style);
const entry = this.map.get(key, null);
if (entry && name in entry) {
return entry[name];
}
return value;
}
/**
* Set a named property for a given CSSStyleDeclaration.
*
* @param {CSSStyleDeclaration} style
* The CSSStyleDeclaration against which the property is to be mapped.
* @param {String} name
* The name of the property to set.
* @param {String} userValue
* The value of the property to set.
*/
setProperty(style, name, userValue) {
const key = this.getKey(style, name);
const entry = this.map.get(key, null);
if (entry) {
entry[name] = userValue;
} else {
const props = {};
props[name] = userValue;
this.map.set(key, props);
}
}
/**
* Check whether a named property for a given CSSStyleDeclaration is stored.
*
* @param {CSSStyleDeclaration} style
* The CSSStyleDeclaration against which the property would be mapped.
* @param {String} name
* The name of the property to check.
*/
contains(style, name) {
const key = this.getKey(style, name);
const entry = this.map.get(key, null);
return !!entry && name in entry;
}
getKey(style, name) {
return style.actorID + ":" + name;
}
clear() {
this.map.clear();
}
}
module.exports = UserProperties;
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