react app

react-app/node_modules/react/lib/DOMPropertyOperations.js

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+/**
+ * Copyright 2013-2015, 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.
+ *
+ * @providesModule DOMPropertyOperations
+ * @typechecks static-only
+ */
+
+'use strict';
+
+var DOMProperty = require("./DOMProperty");
+
+var quoteAttributeValueForBrowser = require("./quoteAttributeValueForBrowser");
+var warning = require("./warning");
+
+function shouldIgnoreValue(name, value) {
+  return value == null ||
+    (DOMProperty.hasBooleanValue[name] && !value) ||
+    (DOMProperty.hasNumericValue[name] && isNaN(value)) ||
+    (DOMProperty.hasPositiveNumericValue[name] && (value < 1)) ||
+    (DOMProperty.hasOverloadedBooleanValue[name] && value === false);
+}
+
+if ("production" !== process.env.NODE_ENV) {
+  var reactProps = {
+    children: true,
+    dangerouslySetInnerHTML: true,
+    key: true,
+    ref: true
+  };
+  var warnedProperties = {};
+
+  var warnUnknownProperty = function(name) {
+    if (reactProps.hasOwnProperty(name) && reactProps[name] ||
+        warnedProperties.hasOwnProperty(name) && warnedProperties[name]) {
+      return;
+    }
+
+    warnedProperties[name] = true;
+    var lowerCasedName = name.toLowerCase();
+
+    // data-* attributes should be lowercase; suggest the lowercase version
+    var standardName = (
+      DOMProperty.isCustomAttribute(lowerCasedName) ?
+        lowerCasedName :
+      DOMProperty.getPossibleStandardName.hasOwnProperty(lowerCasedName) ?
+        DOMProperty.getPossibleStandardName[lowerCasedName] :
+        null
+    );
+
+    // For now, only warn when we have a suggested correction. This prevents
+    // logging too much when using transferPropsTo.
+    ("production" !== process.env.NODE_ENV ? warning(
+      standardName == null,
+      'Unknown DOM property %s. Did you mean %s?',
+      name,
+      standardName
+    ) : null);
+
+  };
+}
+
+/**
+ * Operations for dealing with DOM properties.
+ */
+var DOMPropertyOperations = {
+
+  /**
+   * Creates markup for the ID property.
+   *
+   * @param {string} id Unescaped ID.
+   * @return {string} Markup string.
+   */
+  createMarkupForID: function(id) {
+    return DOMProperty.ID_ATTRIBUTE_NAME + '=' +
+      quoteAttributeValueForBrowser(id);
+  },
+
+  /**
+   * Creates markup for a property.
+   *
+   * @param {string} name
+   * @param {*} value
+   * @return {?string} Markup string, or null if the property was invalid.
+   */
+  createMarkupForProperty: function(name, value) {
+    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
+        DOMProperty.isStandardName[name]) {
+      if (shouldIgnoreValue(name, value)) {
+        return '';
+      }
+      var attributeName = DOMProperty.getAttributeName[name];
+      if (DOMProperty.hasBooleanValue[name] ||
+          (DOMProperty.hasOverloadedBooleanValue[name] && value === true)) {
+        return attributeName;
+      }
+      return attributeName + '=' + quoteAttributeValueForBrowser(value);
+    } else if (DOMProperty.isCustomAttribute(name)) {
+      if (value == null) {
+        return '';
+      }
+      return name + '=' + quoteAttributeValueForBrowser(value);
+    } else if ("production" !== process.env.NODE_ENV) {
+      warnUnknownProperty(name);
+    }
+    return null;
+  },
+
+  /**
+   * Sets the value for a property on a node.
+   *
+   * @param {DOMElement} node
+   * @param {string} name
+   * @param {*} value
+   */
+  setValueForProperty: function(node, name, value) {
+    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
+        DOMProperty.isStandardName[name]) {
+      var mutationMethod = DOMProperty.getMutationMethod[name];
+      if (mutationMethod) {
+        mutationMethod(node, value);
+      } else if (shouldIgnoreValue(name, value)) {
+        this.deleteValueForProperty(node, name);
+      } else if (DOMProperty.mustUseAttribute[name]) {
+        // `setAttribute` with objects becomes only `[object]` in IE8/9,
+        // ('' + value) makes it output the correct toString()-value.
+        node.setAttribute(DOMProperty.getAttributeName[name], '' + value);
+      } else {
+        var propName = DOMProperty.getPropertyName[name];
+        // Must explicitly cast values for HAS_SIDE_EFFECTS-properties to the
+        // property type before comparing; only `value` does and is string.
+        if (!DOMProperty.hasSideEffects[name] ||
+            ('' + node[propName]) !== ('' + value)) {
+          // Contrary to `setAttribute`, object properties are properly
+          // `toString`ed by IE8/9.
+          node[propName] = value;
+        }
+      }
+    } else if (DOMProperty.isCustomAttribute(name)) {
+      if (value == null) {
+        node.removeAttribute(name);
+      } else {
+        node.setAttribute(name, '' + value);
+      }
+    } else if ("production" !== process.env.NODE_ENV) {
+      warnUnknownProperty(name);
+    }
+  },
+
+  /**
+   * Deletes the value for a property on a node.
+   *
+   * @param {DOMElement} node
+   * @param {string} name
+   */
+  deleteValueForProperty: function(node, name) {
+    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
+        DOMProperty.isStandardName[name]) {
+      var mutationMethod = DOMProperty.getMutationMethod[name];
+      if (mutationMethod) {
+        mutationMethod(node, undefined);
+      } else if (DOMProperty.mustUseAttribute[name]) {
+        node.removeAttribute(DOMProperty.getAttributeName[name]);
+      } else {
+        var propName = DOMProperty.getPropertyName[name];
+        var defaultValue = DOMProperty.getDefaultValueForProperty(
+          node.nodeName,
+          propName
+        );
+        if (!DOMProperty.hasSideEffects[name] ||
+            ('' + node[propName]) !== defaultValue) {
+          node[propName] = defaultValue;
+        }
+      }
+    } else if (DOMProperty.isCustomAttribute(name)) {
+      node.removeAttribute(name);
+    } else if ("production" !== process.env.NODE_ENV) {
+      warnUnknownProperty(name);
+    }
+  }
+
+};
+
+module.exports = DOMPropertyOperations;