closes mac-s-g#137

Author: mac-s-g

README.md

@@ -48,6 +48,7 @@ Name|Type|Default|Description
 `indentWidth`|`integer`|4|Set the indent-width for nested objects
 `collapsed`|`boolean` or `integer`|`false`|When set to `true`, all nodes will be collapsed by default.  Use an integer value to collapse at a particular depth.
 `collapseStringsAfterLength`|`integer`|`false`|When an integer value is assigned, strings will be cut off at that length. Collapsed strings are followed by an ellipsis. String content can be expanded and collapsed by clicking on the string value.
+`shouldCollapse`|`(delete)=>{}`|`false`|Callback function to provide control over what objects and arrays should be collapsed by default.  An object is passed to the callback containing `name`, `src`, `type` ("array" or "object") and `namespace`.
 `groupArraysAfterLength`|`integer`|`100`|When an integer value is assigned, arrays will be displayed in groups by count of the value. Groups are displayed with brakcet notation and can be expanded and collapsed by clickong on the brackets.
 `enableClipboard`|`boolean` or `(copy)=>{}`|`true`|When prop is not `false`, the user can copy objects and arrays to clipboard by clicking on the clipboard icon.  Copy callbacks are supported.
 `displayObjectSize`|`boolean`|`true`|When set to `true`, objects and arrays are labeled with size

demo/dist/main.js

@@ -39,6 +39,8 @@ ReactDom.render(
             enableClipboard={copy => {
                 console.log("you copied to clipboard!", copy)
             }}
+            collapsed={false}
+            shouldCollapse={({src, type}) => type === 'array' && src.indexOf('test') > -1}
         />
 
         <br />

dev-server/src/index.js

@@ -1,7 +1,7 @@
 {
   "name": "react-json-view",
   "description": "Interactive react component for displaying javascript arrays and JSON objects.",
-  "version": "1.14.3",
+  "version": "1.15.0",
   "main": "dist/main.js",
   "files": [
     "dist/"

package.json

@@ -42,6 +42,15 @@ class rjvObject extends React.Component {
                 || (props.collapsed !== true
                 && props.collapsed > props.depth)
             )
+            && (
+                !props.shouldCollapse
+                || props.shouldCollapse({
+                    name: props.name,
+                    src: props.src,
+                    type: toType(props.src),
+                    namespace: props.namespace
+                }) === false
+            )
             //initialize closed if object has no items
             && size !== 0
         );
@@ -128,7 +137,7 @@ class rjvObject extends React.Component {
                     {expanded ? this.getObjectMetaData(src) : null}
                 </span>
             )
-        }        
+        }
 
         const IconComponent = expanded ? ExpandedIcon : CollapsedIcon
 
@@ -216,7 +225,7 @@ class rjvObject extends React.Component {
                         namespace={namespace.concat(variable.name)}
                         parent_type={object_type}
                         {...props}
-                    />);  
+                    />);
             } else if (variable.type == 'array') {
                 let ObjectComponent = JsonObject
 

src/js/components/DataTypes/Object.js

@@ -41,6 +41,7 @@ export default class extends React.Component {
         theme: 'rjv-default',
         collapsed: false,
         collapseStringsAfterLength: false,
+        shouldCollapse: false,
         groupArraysAfterLength: 100,
         indentWidth: 4,
         enableClipboard: true,

src/js/index.js

@@ -292,4 +292,37 @@ describe("<JsonObject />", function() {
 
         expect(wrapper.find(".node-ellipsis")).to.have.length(0)
     })
+
+    it("should collapse at shouldCollapse logic", function() {
+        let src = { prop1: 1, prop2: 2, prop3: 3}
+
+        const wrapper = shallow(
+            <JsonObject
+                src={src}
+                theme="rjv-default"
+                namespace={["root"]}
+                collapsed={false}
+                shouldCollapse={() => true}
+            />
+        )
+
+        expect(wrapper.state("expanded")).to.equal(false)
+    })
+
+    it("should expand based on shouldCollapse logic", function() {
+        let src = { prop1: 1, prop2: 2, prop3: 3}
+
+        const wrapper = shallow(
+            <JsonObject
+                src={src}
+                theme="rjv-default"
+                namespace={["root"]}
+                collapsed={false}
+                shouldCollapse={() => false}
+            />
+        )
+
+        expect(wrapper.state("expanded")).to.equal(true)
+    })
+
 })