'renderStaticRangeLabel' callback prop is added to DefinedRange component to enable custom component rendering for static range labels.

-'react-test-renderer' is added to dev dependencies.
-README is updated for 'renderStaticRangeLabel'.
-eslintignore file is updated to ignore snapshot files.
-Existing demo is updated to display custom 'renderStaticRangeLabel' usage.

Author: mortargrind

. eslintignore

@@ -1,3 +1,4 @@
 /node_modules/*
 /lib/*
 /dist/*
+**/*.snap

CONTRIBUTING.md

@@ -10,13 +10,13 @@ Make sure your issue or feature doesn't have any related issue at [react-date-ra
 
 3. Run `yarn` to install the dependencies.
 
-4. Run `yarn dev` to start development server.
+4. Run `yarn run dev` to start development server.
 
 ## Building
 
-. Run `run test` and `run lint` for make sure tests passes and linter doesn't throw any error.
+. Run `yarn test` and `yarn run lint` for make sure tests passes and linter doesn't throw any error.
 
-. Run `yarn build` compile the library and demo source.
+. Run `yarn run build` compile the library and demo source.
 
 . Push your changes and create a PR and apply code review decisions.
 

README.md

@@ -129,6 +129,7 @@ showPreview(DateRange)               | bool      | true             | visibility
 dragSelectionEnabled(Calendar)       | bool      | true             | whether dates can be selected via drag n drop
 onPreviewChange(DateRange)           | Object    |                  | Callback function for preview changes
 dateDisplayFormat(DateRange)         | String    | `MMM D, YYYY`    | selected range preview formatter. Check out [date-fns's format option](https://date-fns.org/v2.0.0-alpha.7/docs/format)
+renderStaticRangeLabel(`DefinedRange`)| Function  |                  | Callback function to be triggered for the static range configurations that have `hasCustomRendering: true` on them. Instead of rendering `staticRange.label`, return value of this callback will be rendered.
 staticRanges(`DefinedRange`, `DateRangePicker`) | Array   | [default preDefined ranges](https://github.com/Adphorus/react-date-range/blob/master/src/defaultRanges.js)             | -
 inputRanges(`DefinedRange`, `DateRangePicker`) | Array   | [default input ranges](https://github.com/Adphorus/react-date-range/blob/master/src/defaultRanges.js)             | -
 

demo/src/components/Main.js

@@ -4,6 +4,51 @@ import * as rdrLocales from '../../../src/locale';
 import { format, addDays } from 'date-fns';
 import Section from './Section';
 
+function renderStaticRangeLabel(staticRange) {
+  return (
+    <CustomStaticRangeLabelContent text={'This is a custom label content: '}/>
+  );
+}
+
+class CustomStaticRangeLabelContent extends React.Component {
+  constructor(props) {
+    super(props);
+
+    this.state = {
+      currentDateString: Date(),
+    };
+
+    this.intervalId = setInterval(
+      () => {
+        this.setState({
+          currentDateString: Date(),
+        });
+      },
+      1000
+    );
+  }
+
+  componentWillUnmount() {
+    if (this.intervalId) {
+      clearInterval(this.intervalId);
+    }
+  }
+
+  render() {
+    const { currentDateString } = this.state;
+    const { text } = this.props;
+
+    return (
+      <span>
+        <i>{text}</i>
+        <span className={'random-date-string'}>
+          <b>{currentDateString}</b>
+        </span>
+      </span>
+    );
+  }
+}
+
 const nameMapper = {
   ar: 'Arabic (Modern Standard Arabic - Al-fussha)',
   bg: 'Bulgarian',
@@ -135,6 +180,7 @@ export default class Main extends Component {
       [which]: payload,
     });
   }
+
   handleRangeChange(which, payload) {
     console.log(which, payload);
     this.setState({
@@ -217,7 +263,7 @@ export default class Main extends Component {
               readOnly
               value={formatDateDisplay(this.state.multipleRanges.selection1.endDate, 'Continuous')}
             />
-            <div className={'newLine'} />
+            <div className={'newLine'}/>
 
             <label className={'label'}>Selection2 Start:</label>
             <input
@@ -231,7 +277,7 @@ export default class Main extends Component {
               readOnly
               value={formatDateDisplay(this.state.multipleRanges.selection2.endDate, 'Continuous')}
             />
-            <div className={'newLine'} />
+            <div className={'newLine'}/>
 
             <label className={'label'}>Selection3 Start:</label>
             <input
@@ -319,9 +365,24 @@ export default class Main extends Component {
 
           <DefinedRange
             ranges={[this.state.definedRange.selection]}
+            renderStaticRangeLabel={renderStaticRangeLabel}
+            staticRanges={[{
+              label: "Hoy",
+              hasCustomRendering: true,
+              range: () => ({
+                startDate: new Date(),
+                endDate: new Date(),
+              }),
+              isSelected() {
+                return (
+                  true
+                );
+              },
+            }]}
             onChange={this.handleRangeChange.bind(this, 'definedRange')}
             className={'centered'}
-          />
+          >
+          </DefinedRange>
         </Section>
         <Section title="RangePicker with disabled dates">
           <div>
@@ -348,6 +409,25 @@ export default class Main extends Component {
             disabledDates={[new Date(), addDays(new Date(), 3)]}
             minDate={addDays(new Date(), -3)}
           />
+
+          <DefinedRange
+            ranges={[this.state.definedRange.selection]}
+            renderStaticRangeLabel={renderStaticRangeLabel}
+            staticRanges={[{
+              hasCustomRendering: true,
+              range: () => ({
+                startDate: new Date(),
+                endDate: new Date(),
+              }),
+              isSelected() {
+                return (
+                  true
+                );
+              },
+            }]}
+            onChange={this.handleRangeChange.bind(this, 'definedRange')}
+            className={'centered'}
+          />
         </Section>
       </main>
     );

package.json

@@ -22,7 +22,8 @@
   ],
   "contributors": [
     "Burak Can <[email protected]> (https://github.com/burakcan)",
-    "Mehmet Kamil Morcay <[email protected]> (https://github.com/mkg0)"
+    "Mehmet Kamil Morcay <[email protected]> (https://github.com/mkg0)",
+    "Engin Semih Basmacı <[email protected]> (https://github.com/mortargrind)"
   ],
   "license": "MIT",
   "repository": {
@@ -73,6 +74,7 @@
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
     "react-hot-loader": "^3.1.3",
+    "react-test-renderer": "16.7.0",
     "style-loader": "^0.19.1",
     "webpack": "^3.10.0",
     "webpack-dev-server": "^2.9.7",

src/components/DefinedRange.js

@@ -14,6 +14,7 @@ class DefinedRanges extends Component {
     };
     this.handleRangeChange = this.handleRangeChange.bind(this);
   }
+
   handleRangeChange(range) {
     const { onChange, ranges, focusedRange } = this.props;
     const selectedRange = ranges[focusedRange[0]];
@@ -22,6 +23,7 @@ class DefinedRanges extends Component {
       [selectedRange.key || `range${focusedRange[0] + 1}`]: { ...selectedRange, ...range },
     });
   }
+
   getSelectedRange(ranges, staticRange) {
     const focusedRangeIndex = ranges.findIndex(range => {
       if (!range.startDate || !range.endDate || range.disabled) return false;
@@ -30,14 +32,24 @@ class DefinedRanges extends Component {
     const selectedRange = ranges[focusedRangeIndex];
     return { selectedRange, focusedRangeIndex };
   }
+
   render() {
-    const { onPreviewChange, ranges, rangeColors, className } = this.props;
+    const { onPreviewChange, ranges, renderStaticRangeLabel, rangeColors, className } = this.props;
+
     return (
       <div className={cx(styles.definedRangesWrapper, className)}>
         {this.props.headerContent}
         <div className={styles.staticRanges}>
           {this.props.staticRanges.map((staticRange, i) => {
             const { selectedRange, focusedRangeIndex } = this.getSelectedRange(ranges, staticRange);
+            let labelContent;
+
+            if (staticRange.hasCustomRendering) {
+              labelContent = renderStaticRangeLabel(staticRange);
+            } else {
+              labelContent = staticRange.label;
+            }
+
             return (
               <button
                 type="button"
@@ -59,7 +71,7 @@ class DefinedRanges extends Component {
                   this.props.onPreviewChange && this.props.onPreviewChange();
                 }}>
                 <span tabIndex={-1} className={styles.staticRangeLabel}>
-                  {staticRange.label}
+                  {labelContent}
                 </span>
               </button>
             );
@@ -106,6 +118,7 @@ DefinedRanges.propTypes = {
   headerContent: PropTypes.any,
   rangeColors: PropTypes.arrayOf(PropTypes.string),
   className: PropTypes.string,
+  renderStaticRangeLabel: PropTypes.func,
 };
 
 DefinedRanges.defaultProps = {

src/components/DefinedRange.test.js

@@ -0,0 +1,138 @@
+import React from 'react';
+import { mount } from 'enzyme';
+
+import DefinedRange from './DefinedRange';
+import { isSameDay } from 'date-fns';
+import testRenderer from 'react-test-renderer';
+
+describe('DefinedRange tests', () => {
+  test('Should call "renderStaticRangeLabel" callback correct amount of times according to the "hasCustomRendering" option', () => {
+    const renderStaticRangeLabel = jest.fn();
+
+    mount(
+      <DefinedRange
+        staticRanges={[
+          {
+            label: 'Dynamic Label',
+            range: {},
+            isSelected(range) {
+              const definedRange = this.range();
+              return (
+                isSameDay(range.startDate, definedRange.startDate) &&
+                isSameDay(range.endDate, definedRange.endDate)
+              );
+            },
+            hasCustomRendering: true,
+          },
+          {
+            label: 'Static Label',
+            range: {},
+            isSelected(range) {
+              const definedRange = this.range();
+              return (
+                isSameDay(range.startDate, definedRange.startDate) &&
+                isSameDay(range.endDate, definedRange.endDate)
+              );
+            },
+          },
+          {
+            label: 'Hede',
+            range: {},
+            isSelected(range) {
+              const definedRange = this.range();
+              return (
+                isSameDay(range.startDate, definedRange.startDate) &&
+                isSameDay(range.endDate, definedRange.endDate)
+              );
+            },
+            hasCustomRendering: true,
+          },
+        ]}
+        renderStaticRangeLabel={renderStaticRangeLabel}
+      />
+    );
+
+    expect(renderStaticRangeLabel).toHaveBeenCalledTimes(2);
+  });
+
+  test('Should render dynamic static label contents correctly', () => {
+    const renderItalicLabelContent = () => (
+      <i className={'italic-label-content'}>{'Italic Content'}</i>
+    );
+    const renderBoldLabelContent = () => <b className={'bold-label-content'}>{'Bold Content'}</b>;
+    const renderSomethingElse = () => <img className={'random-image'} />;
+
+    const renderStaticRangeLabel = function(staticRange) {
+      let result;
+
+      if (staticRange.id === 'italic') {
+        result = renderItalicLabelContent();
+      } else if (staticRange.id === 'bold') {
+        result = renderBoldLabelContent();
+      } else {
+        result = renderSomethingElse();
+      }
+
+      return result;
+    };
+
+    const tree = testRenderer
+      .create(
+        <DefinedRange
+          staticRanges={[
+            {
+              id: 'italic',
+              range: {},
+              isSelected(range) {
+                const definedRange = this.range();
+                return (
+                  isSameDay(range.startDate, definedRange.startDate) &&
+                  isSameDay(range.endDate, definedRange.endDate)
+                );
+              },
+              hasCustomRendering: true,
+            },
+            {
+              label: 'Static Label',
+              range: {},
+              isSelected(range) {
+                const definedRange = this.range();
+                return (
+                  isSameDay(range.startDate, definedRange.startDate) &&
+                  isSameDay(range.endDate, definedRange.endDate)
+                );
+              },
+            },
+            {
+              id: 'whatever',
+              range: {},
+              isSelected(range) {
+                const definedRange = this.range();
+                return (
+                  isSameDay(range.startDate, definedRange.startDate) &&
+                  isSameDay(range.endDate, definedRange.endDate)
+                );
+              },
+              hasCustomRendering: true,
+            },
+            {
+              id: 'bold',
+              range: {},
+              isSelected(range) {
+                const definedRange = this.range();
+                return (
+                  isSameDay(range.startDate, definedRange.startDate) &&
+                  isSameDay(range.endDate, definedRange.endDate)
+                );
+              },
+              hasCustomRendering: true,
+            },
+          ]}
+          renderStaticRangeLabel={renderStaticRangeLabel}
+        />
+      )
+      .toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+});