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/**
* Copyright 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
'use strict';
var CSSProperty = require('./CSSProperty');
var ExecutionEnvironment = require('fbjs/lib/ExecutionEnvironment');
var ReactInstrumentation = require('./ReactInstrumentation');
var camelizeStyleName = require('fbjs/lib/camelizeStyleName');
var dangerousStyleValue = require('./dangerousStyleValue');
var hyphenateStyleName = require('fbjs/lib/hyphenateStyleName');
var memoizeStringOnly = require('fbjs/lib/memoizeStringOnly');
var warning = require('fbjs/lib/warning');
var processStyleName = memoizeStringOnly(function (styleName) {
return hyphenateStyleName(styleName);
});
var hasShorthandPropertyBug = false;
var styleFloatAccessor = 'cssFloat';
if (ExecutionEnvironment.canUseDOM) {
var tempStyle = document.createElement('div').style;
try {
// IE8 throws "Invalid argument." if resetting shorthand style properties.
tempStyle.font = '';
} catch (e) {
hasShorthandPropertyBug = true;
}
// IE8 only supports accessing cssFloat (standard) as styleFloat
if (document.documentElement.style.cssFloat === undefined) {
styleFloatAccessor = 'styleFloat';
}
}
if (process.env.NODE_ENV !== 'production') {
// 'msTransform' is correct, but the other prefixes should be capitalized
var badVendoredStyleNamePattern = /^(?:webkit|moz|o)[A-Z]/;
// style values shouldn't contain a semicolon
var badStyleValueWithSemicolonPattern = /;\s*$/;
var warnedStyleNames = {};
var warnedStyleValues = {};
var warnedForNaNValue = false;
var warnHyphenatedStyleName = function (name, owner) {
if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
return;
}
warnedStyleNames[name] = true;
process.env.NODE_ENV !== 'production' ? warning(false, 'Unsupported style property %s. Did you mean %s?%s', name, camelizeStyleName(name), checkRenderMessage(owner)) : void 0;
};
var warnBadVendoredStyleName = function (name, owner) {
if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
return;
}
warnedStyleNames[name] = true;
process.env.NODE_ENV !== 'production' ? warning(false, 'Unsupported vendor-prefixed style property %s. Did you mean %s?%s', name, name.charAt(0).toUpperCase() + name.slice(1), checkRenderMessage(owner)) : void 0;
};
var warnStyleValueWithSemicolon = function (name, value, owner) {
if (warnedStyleValues.hasOwnProperty(value) && warnedStyleValues[value]) {
return;
}
warnedStyleValues[value] = true;
process.env.NODE_ENV !== 'production' ? warning(false, 'Style property values shouldn\'t contain a semicolon.%s ' + 'Try "%s: %s" instead.', checkRenderMessage(owner), name, value.replace(badStyleValueWithSemicolonPattern, '')) : void 0;
};
var warnStyleValueIsNaN = function (name, value, owner) {
if (warnedForNaNValue) {
return;
}
warnedForNaNValue = true;
process.env.NODE_ENV !== 'production' ? warning(false, '`NaN` is an invalid value for the `%s` css style property.%s', name, checkRenderMessage(owner)) : void 0;
};
var checkRenderMessage = function (owner) {
if (owner) {
var name = owner.getName();
if (name) {
return ' Check the render method of `' + name + '`.';
}
}
return '';
};
/**
* @param {string} name
* @param {*} value
* @param {ReactDOMComponent} component
*/
var warnValidStyle = function (name, value, component) {
var owner;
if (component) {
owner = component._currentElement._owner;
}
if (name.indexOf('-') > -1) {
warnHyphenatedStyleName(name, owner);
} else if (badVendoredStyleNamePattern.test(name)) {
warnBadVendoredStyleName(name, owner);
} else if (badStyleValueWithSemicolonPattern.test(value)) {
warnStyleValueWithSemicolon(name, value, owner);
}
if (typeof value === 'number' && isNaN(value)) {
warnStyleValueIsNaN(name, value, owner);
}
};
}
/**
* Operations for dealing with CSS properties.
*/
var CSSPropertyOperations = {
/**
* Serializes a mapping of style properties for use as inline styles:
*
* > createMarkupForStyles({width: '200px', height: 0})
* "width:200px;height:0;"
*
* Undefined values are ignored so that declarative programming is easier.
* The result should be HTML-escaped before insertion into the DOM.
*
* @param {object} styles
* @param {ReactDOMComponent} component
* @return {?string}
*/
createMarkupForStyles: function (styles, component) {
var serialized = '';
for (var styleName in styles) {
if (!styles.hasOwnProperty(styleName)) {
continue;
}
var styleValue = styles[styleName];
if (process.env.NODE_ENV !== 'production') {
warnValidStyle(styleName, styleValue, component);
}
if (styleValue != null) {
serialized += processStyleName(styleName) + ':';
serialized += dangerousStyleValue(styleName, styleValue, component) + ';';
}
}
return serialized || null;
},
/**
* Sets the value for multiple styles on a node. If a value is specified as
* '' (empty string), the corresponding style property will be unset.
*
* @param {DOMElement} node
* @param {object} styles
* @param {ReactDOMComponent} component
*/
setValueForStyles: function (node, styles, component) {
if (process.env.NODE_ENV !== 'production') {
ReactInstrumentation.debugTool.onHostOperation({
instanceID: component._debugID,
type: 'update styles',
payload: styles
});
}
var style = node.style;
for (var styleName in styles) {
if (!styles.hasOwnProperty(styleName)) {
continue;
}
if (process.env.NODE_ENV !== 'production') {
warnValidStyle(styleName, styles[styleName], component);
}
var styleValue = dangerousStyleValue(styleName, styles[styleName], component);
if (styleName === 'float' || styleName === 'cssFloat') {
styleName = styleFloatAccessor;
}
if (styleValue) {
style[styleName] = styleValue;
} else {
var expansion = hasShorthandPropertyBug && CSSProperty.shorthandPropertyExpansions[styleName];
if (expansion) {
// Shorthand property that IE8 won't like unsetting, so unset each
// component to placate it
for (var individualStyleName in expansion) {
style[individualStyleName] = '';
}
} else {
style[styleName] = '';
}
}
}
}
};
module.exports = CSSPropertyOperations;
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