Add -done class names (#269)

* Add -done class names

* Remove done classes on transition

* Add additional documentation for -done classes

src/CSSTransition.js

@@ -14,11 +14,11 @@ const propTypes = {
   ...Transition.propTypes,
 
   /**
-   * The animation classNames applied to the component as it enters or exits.
+   * The animation classNames applied to the component as it enters, exits or has finished the transition.
    * A single name can be provided and it will be suffixed for each stage: e.g.
    *
-   * `classNames="fade"` applies `fade-enter`, `fade-enter-active`,
-   * `fade-exit`, `fade-exit-active`, `fade-appear`, and `fade-appear-active`.
+   * `classNames="fade"` applies `fade-enter`, `fade-enter-active`, `fade-enter-done`,
+   * `fade-exit`, `fade-exit-active`, `fade-exit-done`, `fade-appear`, and `fade-appear-active`.
    * Each individual classNames can also be specified independently like:
    *
    * ```js
@@ -27,8 +27,10 @@ const propTypes = {
    *  appearActive: 'my-active-appear',
    *  enter: 'my-enter',
    *  enterActive: 'my-active-enter',
+   *  enterDone: 'my-done-enter,
    *  exit: 'my-exit',
    *  exitActive: 'my-active-exit',
+   *  exitDone: 'my-done-exit,
    * }}
    * ```
    *
@@ -37,8 +39,10 @@ const propTypes = {
    *  appearActive?: string,
    *  enter?: string,
    *  enterActive?: string,
+   *  enterDone?: string,
    *  exit?: string,
    *  exitActive?: string,
+   *  exitDone?: string,
    * }}
    */
   classNames: classNamesShape,
@@ -61,7 +65,7 @@ const propTypes = {
 
   /**
    * A `<Transition>` callback fired immediately after the 'enter' or
-   * 'appear' classes are **removed** from the DOM node.
+   * 'appear' classes are **removed** and the `done` class is added to the DOM node.
    *
    * @type Function(node: HtmlElement, isAppearing: bool)
    */
@@ -85,7 +89,7 @@ const propTypes = {
 
   /**
    * A `<Transition>` callback fired immediately after the 'exit' classes
-   * are **removed** from the DOM node.
+   * are **removed** and the `exit-done` class is added to the DOM node.
    *
    * @type Function(node: HtmlElement)
    */
@@ -98,7 +102,8 @@ const propTypes = {
  *
  * `CSSTransition` applies a pair of class names during the `appear`, `enter`,
  * and `exit` stages of the transition. The first class is applied and then a
- * second "active" class in order to activate the css animation.
+ * second "active" class in order to activate the css animation. After the animation,
+ * matching `done` class names are applied to persist the animation state.
  *
  * When the `in` prop is toggled to `true` the Component will get
  * the `example-enter` CSS class and the `example-enter-active` CSS class
@@ -131,7 +136,10 @@ class CSSTransition extends React.Component {
   }
 
   onEntered = (node, appearing) => {
+    const { doneClassName } = this.getClassNames('enter');
+
     this.removeClasses(node, appearing ? 'appear' : 'enter');
+    addClass(node, doneClassName);
 
     if (this.props.onEntered) {
       this.props.onEntered(node)
@@ -161,29 +169,40 @@ class CSSTransition extends React.Component {
   }
 
   onExited = (node) => {
+    const { doneClassName } = this.getClassNames('exit');
+
     this.removeClasses(node, 'exit');
+    addClass(node, doneClassName);
 
     if (this.props.onExited) {
       this.props.onExited(node)
     }
   }
 
   getClassNames = (type) => {
-    const { classNames } = this.props
+    const { classNames } = this.props;
 
     let className = typeof classNames !== 'string' ?
       classNames[type] : classNames + '-' + type;
 
     let activeClassName = typeof classNames !== 'string' ?
       classNames[type + 'Active'] : className + '-active';
 
-    return { className, activeClassName }
+    let doneClassName = typeof classNames !== 'string' ?
+      classNames[type + 'Done'] : className + '-done';
+
+    return {
+      className,
+      activeClassName,
+      doneClassName
+    };
   }
 
   removeClasses(node, type) {
-    const { className, activeClassName } = this.getClassNames(type)
+    const { className, activeClassName, doneClassName } = this.getClassNames(type)
     className && removeClass(node, className);
     activeClassName && removeClass(node, activeClassName);
+    doneClassName && removeClass(node, doneClassName);
   }
 
   reflowAndAddClass(node, className) {

src/utils/PropTypes.js

@@ -44,8 +44,10 @@ export const classNamesShape = PropTypes.oneOfType([
   }),
   PropTypes.shape({
     enter: PropTypes.string,
+    enterDone: PropTypes.string,
     enterActive: PropTypes.string,
     exit: PropTypes.string,
+    exitDone: PropTypes.string,
     exitActive: PropTypes.string,
   }),
 ]);

test/CSSTransition-test.js

@@ -69,7 +69,7 @@ describe('CSSTransition', () => {
         },
 
         onEntered(node){
-          expect(node.className).toEqual('');
+          expect(node.className).toEqual('test-enter-done');
           expect(count).toEqual(2);
           done();
         }
@@ -84,6 +84,7 @@ describe('CSSTransition', () => {
           classNames={{
             enter: 'custom',
             enterActive: 'custom-super-active',
+            enterDone: 'custom-super-done',
           }}
         >
           <div/>
@@ -104,7 +105,7 @@ describe('CSSTransition', () => {
         },
 
         onEntered(node){
-          expect(node.className).toEqual('');
+          expect(node.className).toEqual('custom-super-done');
           expect(count).toEqual(2);
           done();
         }
@@ -144,7 +145,7 @@ describe('CSSTransition', () => {
         },
 
         onExited(node){
-          expect(node.className).toEqual('');
+          expect(node.className).toEqual('test-exit-done');
           expect(count).toEqual(2);
           done();
         }
@@ -160,6 +161,7 @@ describe('CSSTransition', () => {
           classNames={{
             exit: 'custom',
             exitActive: 'custom-super-active',
+            exitDone: 'custom-super-done',
           }}
         >
           <div/>
@@ -180,7 +182,7 @@ describe('CSSTransition', () => {
         },
 
         onExited(node){
-          expect(node.className).toEqual('');
+          expect(node.className).toEqual('custom-super-done');
           expect(count).toEqual(2);
           done();
         }