fix inputValue locked

fix ant-design/ant-design#13889

Author: zombieJ

src/Pagination.jsx

@@ -116,19 +116,20 @@ class Pagination extends React.Component {
     }
   }
 
-  static getDerivedStateFromProps(props, state) {
-    let newState = {};
+  static getDerivedStateFromProps(props, prevState) {
+    const newState = {};
 
     if ('current' in props) {
-      newState = {
-        current: props.current,
-        currentInputValue: props.current,
-      };
+      newState.current = props.current;
+
+      if (props.current !== prevState.current) {
+        newState.currentInputValue = newState.current;
+      }
     }
 
-    if ('pageSize' in props) {
-      let current = state.current;
-      const newCurrent = calculatePage(props.pageSize, state, props);
+    if ('pageSize' in props && props.pageSize !== prevState.pageSize) {
+      let current = prevState.current;
+      const newCurrent = calculatePage(props.pageSize, prevState, props);
       current = current > newCurrent ? newCurrent : current;
 
       if (!('current' in props)) {

tests/Pagination.spec.js

@@ -197,6 +197,23 @@ describe('Controlled Pagination', () => {
     ReactDOM.unmountComponentAtNode(container);
   });
 
+  it('not replace currentInputValue if current not change', (done) => {
+    pagination.state.current = 1;
+    pagination.state.currentInputValue = 1;
+    pagination.forceUpdate();
+    expect(pagination.state.current).to.be(1);
+    expect(pagination.state.currentInputValue).to.be(1);
+
+    setTimeout(() => {
+      pagination.state.currentInputValue = 1;
+      pagination.forceUpdate();
+      expect(pagination.state.current).to.be(2);
+      expect(pagination.state.currentInputValue).to.be(1);
+
+      done();
+    }, 10);
+  });
+
   it('current should equal defaultCurrent', () => {
     expect(pagination.state.current).to.be(2);
   });