Added multi select checkbox functionality

Author: kumarbindal

README.md

@@ -101,6 +101,26 @@ Sets the treeview styling. Defaults to `src/themes/default`.
 
 Sets the treeview animations. Set to `false` if you want to turn off animations. See [velocity-react](https://github.com/twitter-fabric/velocity-react) for more details. Defaults to `src/themes/animations`.
 
+#### enableCheckbox
+`PropTypes.bool`
+Enable / disable checkbox element for each node. Defaults to `false`.
+
+#### checkboxField
+`PropTypes.string`
+To set the checkbox field value which need to be used. Defaults to `name`.
+
+#### handleCheckbox
+`PropTypes.func`
+
+Callback function when a checbox is checked / unchecked. Passes 2 attributes: the data node and it's checked boolean value.
+
+```
+handleCheckbox(node, isChecked) {
+    node.checked = isChecked;
+    this.setState({cursor: node});
+}
+```
+
 #### decorators
 `PropTypes.object`
 
@@ -157,6 +177,7 @@ const decorators = {
     loading: '[optional] boolean',
     decorators: '[optional] object',
     animations: '[optional] object'
+    checked: '[optional] boolean'
 },
 ```
 #### id
@@ -179,3 +200,6 @@ Loading flag. It will populate the treeview with the loading component. Useful w
 
 #### decorators / animations
 Attach specific decorators / animations to a node. Provides the low level functionality to create visuals on a node-by-node basis. These structures are the same as the top level props, described above.
+
+#### checked
+Checked flag. Validate node checkbox should display as checked or not .

example/app.js

@@ -49,8 +49,14 @@ class DemoTree extends React.Component {
     constructor() {
         super();
 
-        this.state = {data};
+        this.state = {data, withCheckbox: false};
         this.onToggle = this.onToggle.bind(this);
+        this.withCheckbox = this.withCheckbox.bind(this);
+        this.handleCheckbox = this.handleCheckbox.bind(this);
+    }
+
+    withCheckbox() {
+        this.setState({ withCheckbox: !this.state.withCheckbox });
     }
 
     onToggle(node, toggled) {
@@ -78,6 +84,11 @@ class DemoTree extends React.Component {
         this.setState({data: filtered});
     }
 
+    handleCheckbox(node, isChecked) {
+        node.checked = isChecked;
+        this.setState({cursor: node});
+    }
+
     render() {
         const {data: stateData, cursor} = this.state;
 
@@ -95,9 +106,13 @@ class DemoTree extends React.Component {
                     </div>
                 </div>
                 <div style={styles.component}>
+                    <input type="checkbox" onChange={this.withCheckbox} /> <span style={{ color: '#9da5ab' }}>With Checkbox?</span>
+                    <br />
                     <Treebeard data={stateData}
                                decorators={decorators}
-                               onToggle={this.onToggle}/>
+                               onToggle={this.onToggle}
+                               enableCheckbox={this.state.withCheckbox}
+                               handleCheckbox={this.handleCheckbox} />
                 </div>
                 <div style={styles.component}>
                     <NodeViewer node={cursor}/>

src/components/node.js

@@ -22,6 +22,12 @@ class TreeNode extends React.Component {
         }
     }
 
+    handleCheckbox(flagChecked) {
+        if (this.props.handleCheckbox) {
+            this.props.handleCheckbox(this.props.node, !flagChecked);
+        }
+    }
+
     animations() {
         const {animations, node} = this.props;
 
@@ -44,6 +50,20 @@ class TreeNode extends React.Component {
         return Object.assign({}, decorators, nodeDecorators);
     }
 
+    renderCheckbox(value, style, isChecked) {
+        if (this.props.enableCheckbox) {
+            return (
+                <input
+                    type="checkbox"
+                    checked={isChecked}
+                    value={value}
+                    style={style}
+                    onChange={this.handleCheckbox.bind(this, isChecked)}
+                />
+            );
+        }
+    }
+
     render() {
         const {style} = this.props;
         const decorators = this.decorators();
@@ -52,6 +72,7 @@ class TreeNode extends React.Component {
         return (
             <li ref={ref => this.topLevelRef = ref}
                 style={style.base}>
+                {this.renderCheckbox(this.props.node[this.props.checkboxField], style.checkbox, this.props.node.checked)}
                 {this.renderHeader(decorators, animations)}
 
                 {this.renderDrawer(decorators, animations)}
@@ -109,7 +130,10 @@ class TreeNode extends React.Component {
                                                           decorators={propDecorators}
                                                           key={child.id || index}
                                                           node={child}
-                                                          style={style}/>
+                                                          style={style}
+                                                          enableCheckbox={this.props.enableCheckbox}
+                                                          checkboxField={this.props.checkboxField}
+                                                          handleCheckbox={this.props.handleCheckbox}/>
                 )}
             </ul>
         );
@@ -144,7 +168,10 @@ TreeNode.propTypes = {
         PropTypes.object,
         PropTypes.bool
     ]).isRequired,
-    onToggle: PropTypes.func
+    onToggle: PropTypes.func,
+    enableCheckbox: PropTypes.bool,
+    checkboxField: PropTypes.string,
+    handleCheckbox: PropTypes.func
 };
 
 export default TreeNode;

src/components/treebeard.js

@@ -26,7 +26,10 @@ class TreeBeard extends React.Component {
                               key={node.id || index}
                               node={node}
                               onToggle={onToggle}
-                              style={style.tree.node}/>
+                              style={style.tree.node}
+                              enableCheckbox={this.props.enableCheckbox}
+                              checkboxField={this.props.checkboxField}
+                              handleCheckbox={this.props.handleCheckbox}/>
                 )}
             </ul>
         );
@@ -44,13 +47,18 @@ TreeBeard.propTypes = {
         PropTypes.bool
     ]),
     onToggle: PropTypes.func,
-    decorators: PropTypes.object
+    decorators: PropTypes.object,
+    enableCheckbox: PropTypes.bool,
+    checkboxField: PropTypes.string,
+    handleCheckbox: PropTypes.func
 };
 
 TreeBeard.defaultProps = {
     style: defaultTheme,
     animations: defaultAnimations,
-    decorators: defaultDecorators
+    decorators: defaultDecorators,
+    enableCheckbox: false,
+    checkboxField: 'name'
 };
 
 export default TreeBeard;

src/themes/default.js

@@ -12,14 +12,19 @@ export default {
             fontSize: '14px'
         },
         node: {
+            checkbox: {
+                float: 'left',
+                marginRight: '5px',
+                marginTop: '6px'
+            },
             base: {
                 position: 'relative'
             },
             link: {
                 cursor: 'pointer',
                 position: 'relative',
                 padding: '0px 5px',
-                display: 'block'
+                display: 'inline-block'
             },
             activeLink: {
                 background: '#31363F'