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* This is a fork from the CSS Style Declaration part of
* https://github.com/NV/CSSOM
********************************************************************/
'use strict';
var CSSOM = require('cssom');
var allProperties = require('./allProperties');
var allExtraProperties = require('./allExtraProperties');
var implementedProperties = require('./implementedProperties');
var { dashedToCamelCase } = require('./parsers');
var getBasicPropertyDescriptor = require('./utils/getBasicPropertyDescriptor');
/**
* @constructor
* @see http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration
*/
var CSSStyleDeclaration = function CSSStyleDeclaration(onChangeCallback) {
this._values = {};
this._importants = {};
this._length = 0;
this._onChange =
onChangeCallback ||
function() {
return;
};
};
CSSStyleDeclaration.prototype = {
constructor: CSSStyleDeclaration,
/**
*
* @param {string} name
* @see http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration-getPropertyValue
* @return {string} the value of the property if it has been explicitly set for this declaration block.
* Returns the empty string if the property has not been set.
*/
getPropertyValue: function(name) {
if (!this._values.hasOwnProperty(name)) {
return '';
}
return this._values[name].toString();
},
/**
*
* @param {string} name
* @param {string} value
* @param {string} [priority=null] "important" or null
* @see http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration-setProperty
*/
setProperty: function(name, value, priority) {
Iif (value === undefined) {
return;
}
Iif (value === null || value === '') {
this.removeProperty(name);
return;
}
var lowercaseName = name.toLowerCase();
if (!allProperties.has(lowercaseName) && !allExtraProperties.has(lowercaseName)) {
return;
}
this[lowercaseName] = value;
this._importants[lowercaseName] = priority;
},
_setProperty: function(name, value, priority) {
if (value === undefined) {
return;
}
if (value === null || value === '') {
this.removeProperty(name);
return;
}
if (this._values[name]) {
// Property already exist. Overwrite it.
var index = Array.prototype.indexOf.call(this, name);
if (index < 0) {
this[this._length] = name;
this._length++;
}
} else {
// New property.
this[this._length] = name;
this._length++;
}
this._values[name] = value;
this._importants[name] = priority;
this._onChange(this.cssText);
},
/**
*
* @param {string} name
* @see http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration-removeProperty
* @return {string} the value of the property if it has been explicitly set for this declaration block.
* Returns the empty string if the property has not been set or the property name does not correspond to a known CSS property.
*/
removeProperty: function(name) {
if (!this._values.hasOwnProperty(name)) {
return '';
}
var prevValue = this._values[name];
delete this._values[name];
delete this._importants[name];
var index = Array.prototype.indexOf.call(this, name);
if (index < 0) {
return prevValue;
}
// That's what WebKit and Opera do
Array.prototype.splice.call(this, index, 1);
// That's what Firefox does
//this[index] = ""
this._onChange(this.cssText);
return prevValue;
},
/**
*
* @param {String} name
*/
getPropertyPriority: function(name) {
return this._importants[name] || '';
},
getPropertyCSSValue: function() {
//FIXME
return;
},
/**
* element.style.overflow = "auto"
* element.style.getPropertyShorthand("overflow-x")
* -> "overflow"
*/
getPropertyShorthand: function() {
//FIXME
return;
},
isPropertyImplicit: function() {
//FIXME
return;
},
/**
* http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration-item
*/
item: function(index) {
index = parseInt(index, 10);
Iif (index < 0 || index >= this._length) {
return '';
}
return this[index];
},
};
Object.defineProperties(CSSStyleDeclaration.prototype, {
cssText: {
get: function() {
var properties = [];
var i;
var name;
var value;
var priority;
for (i = 0; i < this._length; i++) {
name = this[i];
value = this.getPropertyValue(name);
priority = this.getPropertyPriority(name);
Iif (priority !== '') {
priority = ' !' + priority;
}
properties.push([name, ': ', value, priority, ';'].join(''));
}
return properties.join(' ');
},
set: function(value) {
var i;
this._values = {};
Array.prototype.splice.call(this, 0, this._length);
this._importants = {};
var dummyRule;
try {
dummyRule = CSSOM.parse('#bogus{' + value + '}').cssRules[0].style;
} catch (err) {
// malformed css, just return
return;
}
var rule_length = dummyRule.length;
var name;
for (i = 0; i < rule_length; ++i) {
name = dummyRule[i];
this.setProperty(
dummyRule[i],
dummyRule.getPropertyValue(name),
dummyRule.getPropertyPriority(name)
);
}
this._onChange(this.cssText);
},
enumerable: true,
configurable: true,
},
parentRule: {
get: function() {
return null;
},
enumerable: true,
configurable: true,
},
length: {
get: function() {
return this._length;
},
/**
* This deletes indices if the new length is less then the current
* length. If the new length is more, it does nothing, the new indices
* will be undefined until set.
**/
set: function(value) {
var i;
for (i = value; i < this._length; i++) {
delete this[i];
}
this._length = value;
},
enumerable: true,
configurable: true,
},
});
require('./properties')(CSSStyleDeclaration.prototype);
allProperties.forEach(function(property) {
if (!implementedProperties.has(property)) {
var declaration = getBasicPropertyDescriptor(property);
Object.defineProperty(CSSStyleDeclaration.prototype, property, declaration);
Object.defineProperty(CSSStyleDeclaration.prototype, dashedToCamelCase(property), declaration);
}
});
allExtraProperties.forEach(function(property) {
if (!implementedProperties.has(property)) {
var declaration = getBasicPropertyDescriptor(property);
Object.defineProperty(CSSStyleDeclaration.prototype, property, declaration);
Object.defineProperty(CSSStyleDeclaration.prototype, dashedToCamelCase(property), declaration);
}
});
exports.CSSStyleDeclaration = CSSStyleDeclaration;
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