examples load fix

.gitignore

@@ -19,4 +19,5 @@ __pycache__/
 demo/models/*
 dist/*
 *.h5
-docs.json
+docs.json
+*.bak

build/lib/gradio/outputs.py

@@ -208,6 +208,95 @@ class KeyValues(AbstractOutput):
         }
 
 
+class HighlightedText(AbstractOutput):
+    '''
+    Component creates text that contains spans that are highlighted by category or numerical value.
+    Output is represent as a list of Tuple pairs, where the first element represents the span of text represented by the tuple, and the second element represents the category or value of the text.
+    Output type: List[Tuple[str, Union[float, str]]]
+    '''
+
+    def __init__(self, category_colors=None, label=None):
+        '''
+        Parameters:
+        category_colors (Dict[str, float]): 
+        label (str): component name in interface.
+        '''
+        super().__init__(label)
+
+    def get_template_context(self):
+        return {
+            **super().get_template_context()
+        }
+
+    @classmethod
+    def get_shortcut_implementations(cls):
+        return {
+            "highlight": {},
+        }
+
+    def postprocess(self, prediction):
+        if isinstance(prediction, str) or isinstance(prediction, int) or isinstance(prediction, float):
+            return str(prediction)
+        else:
+            raise ValueError("The `Textbox` output interface expects an output that is one of: a string, or"
+                             "an int/float that can be converted to a string.")
+
+
+class JSON(AbstractOutput):
+    '''
+    Used for JSON output. Expects a JSON string or a Python dictionary or list that can be converted to JSON. 
+    Output type: Union[str, Dict[str, Any], List[Any]]
+    '''
+
+    def __init__(self, label=None):
+        '''
+        Parameters:
+        label (str): component name in interface.
+        '''
+        super().__init__(label)
+
+    def postprocess(self, prediction):
+        if isinstance(prediction, dict) or isinstance(prediction, list):
+            return json.dumps(prediction)
+        elif isinstance(prediction, str):
+            return prediction
+        else:
+            raise ValueError("The `JSON` output interface expects an output that is a dictionary or list "
+                             "or a preformatted JSON string.")
+
+    @classmethod
+    def get_shortcut_implementations(cls):
+        return {
+            "json": {},
+        }
+
+
+class HTML(AbstractOutput):
+    '''
+    Used for HTML output. Expects a JSON string or a Python dictionary or list that can be converted to JSON. 
+    Output type: str
+    '''
+
+    def __init__(self, label=None):
+        '''
+        Parameters:
+        label (str): component name in interface.
+        '''
+        super().__init__(label)
+
+    def postprocess(self, prediction):
+        if isinstance(prediction, str):
+            return prediction
+        else:
+            raise ValueError("The `HTML` output interface expects an output that is a str.")
+
+    @classmethod
+    def get_shortcut_implementations(cls):
+        return {
+            "html": {},
+        }
+
+
 # Automatically adds all shortcut implementations in AbstractInput into a dictionary.
 shortcuts = {}
 for cls in AbstractOutput.__subclasses__():

build/lib/gradio/static/css/style.css

@@ -65,6 +65,7 @@ button.secondary {
   background-color: whitesmoke;
   border-right: solid 4px whitesmoke;
   border-left: solid 4px whitesmoke;
+  border-bottom: solid 4px whitesmoke;
 }
 #examples th {
   padding: 8px 16px;

build/lib/gradio/static/css/vendor/icons.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="11" height="22"><defs><linearGradient id="a"><stop offset="0"/><stop offset="1" stop-opacity="0"/></linearGradient><radialGradient xlink:href="#a" cx="9.739" cy="9.716" fx="9.739" fy="9.716" r="3.709" gradientUnits="userSpaceOnUse"/></defs><g stroke="#000" fill="none"><g transform="translate(-129.5 -333.862) translate(0 .188)"><rect transform="matrix(.962 0 0 .971 4.943 11.548)" ry="2" rx="2" y="332.362" x="130" height="10.337" width="10.432" opacity=".5"/><g><path d="M132 339.175h6" opacity=".5"/><path d="M135 336.175v6" opacity=".5"/></g></g><g transform="translate(-129.5 -333.862)"><rect width="10.432" height="10.337" x="130" y="332.362" rx="2" ry="2" transform="matrix(.962 0 0 .971 4.943 22.736)" opacity=".5"/><path d="M132 350.362h6" opacity=".5"/></g></g></svg>

build/lib/gradio/static/css/vendor/jsonTree.css

@@ -0,0 +1,107 @@
+/*
+ * JSON Tree Viewer
+ * http://github.com/summerstyle/jsonTreeViewer
+ *
+ * Copyright 2017 Vera Lobacheva (http://iamvera.com)
+ * Released under the MIT license (LICENSE.txt)
+ */
+
+/* Background for the tree. May use for <body> element */
+.jsontree_bg {
+    background: #FFF;
+}
+
+/* Styles for the container of the tree (e.g. fonts, margins etc.) */
+.jsontree_tree {
+    margin-left: 30px;
+    font-family: 'PT Mono', monospace;
+    font-size: 14px;
+}
+
+/* Styles for a list of child nodes */
+.jsontree_child-nodes {
+    display: none;
+    margin-left: 35px; 
+    margin-bottom: 5px;
+    line-height: 2;
+}
+.jsontree_node_expanded > .jsontree_value-wrapper > .jsontree_value > .jsontree_child-nodes {
+    display: block;
+}
+
+/* Styles for labels */
+.jsontree_label-wrapper {
+    float: left;
+    margin-right: 8px;
+}
+.jsontree_label {
+    font-weight: normal;
+    vertical-align: top;
+    color: #000;
+    position: relative;
+    padding: 1px;
+    border-radius: 4px;
+    cursor: default;
+}
+.jsontree_node_marked > .jsontree_label-wrapper > .jsontree_label {
+    background: #fff2aa;
+}
+
+/* Styles for values */
+.jsontree_value-wrapper {
+    display: block;
+    overflow: hidden;
+}
+.jsontree_node_complex > .jsontree_value-wrapper {
+    overflow: inherit;
+}
+.jsontree_value { 
+    vertical-align: top;
+    display: inline;
+}
+.jsontree_value_null {
+    color: #777;
+    font-weight: bold;
+}
+.jsontree_value_string {
+    color: #025900;
+    font-weight: bold;
+}
+.jsontree_value_number {
+    color: #000E59;
+    font-weight: bold;
+}
+.jsontree_value_boolean {
+    color: #600100;
+    font-weight: bold;
+}
+
+/* Styles for active elements */
+.jsontree_expand-button {
+    position: absolute;
+    top: 3px;
+    left: -15px;
+    display: block;
+    width: 11px;
+    height: 11px;
+    background-image: url('icons.svg');
+}
+.jsontree_node_expanded > .jsontree_label-wrapper > .jsontree_label > .jsontree_expand-button {
+    background-position: 0 -11px;
+}
+.jsontree_show-more {
+    cursor: pointer;
+}
+.jsontree_node_expanded > .jsontree_value-wrapper > .jsontree_value > .jsontree_show-more {
+    display: none;
+}
+.jsontree_node_empty > .jsontree_label-wrapper > .jsontree_label > .jsontree_expand-button,
+.jsontree_node_empty > .jsontree_value-wrapper > .jsontree_value > .jsontree_show-more {
+    display: none !important;
+}
+.jsontree_node_complex > .jsontree_label-wrapper > .jsontree_label {
+    cursor: pointer;
+}
+.jsontree_node_empty > .jsontree_label-wrapper > .jsontree_label {
+    cursor: default !important;
+}

build/lib/gradio/static/js/interfaces/input/dropdown.js

@@ -23,5 +23,6 @@ const dropdown = {
   load_example: function(data) {
     let child = this.choices.indexOf(data) + 1;
     this.target.find("option:nth-child(" + child + ")").prop("selected", true);
+    this.target.find(".dropdown").selectmenu("refresh");
   }
 }

build/lib/gradio/static/js/interfaces/input/slider.js

@@ -38,7 +38,7 @@ const slider = {
     this.target.find("input").val(this.default);
   },
   load_example: function(data) {
-    this.target.find("input").val(data);   
-    this.target.find(".value").text(data);
+    this.target.find(".slider").slider("option", "value", data)
+    this.target.find(".ui-slider-handle").text(data);
   }
 }

build/lib/gradio/static/js/vendor/jsonTree.js

@@ -0,0 +1,819 @@
+/**
+ * JSON Tree library (a part of jsonTreeViewer)
+ * http://github.com/summerstyle/jsonTreeViewer
+ *
+ * Copyright 2017 Vera Lobacheva (http://iamvera.com)
+ * Released under the MIT license (LICENSE.txt)
+ */
+
+var jsonTree = (function() {
+    
+    /* ---------- Utilities ---------- */
+    var utils = {
+        
+        /*
+         * Returns js-"class" of value
+         * 
+         * @param val {any type} - value
+         * @returns {string} - for example, "[object Function]"
+         */
+        getClass : function(val) {
+            return Object.prototype.toString.call(val);
+        },
+        
+        /**
+         * Checks for a type of value (for valid JSON data types).
+         * In other cases - throws an exception
+         * 
+         * @param val {any type} - the value for new node
+         * @returns {string} ("object" | "array" | "null" | "boolean" | "number" | "string")
+         */
+        getType : function(val) {
+            if (val === null) {
+                return 'null';
+            }
+            
+            switch (typeof val) {
+                case 'number':
+                    return 'number';
+                
+                case 'string':
+                    return 'string';
+                
+                case 'boolean':
+                    return 'boolean';
+            }
+            
+            switch(utils.getClass(val)) {
+                case '[object Array]':
+                    return 'array';
+                
+                case '[object Object]':
+                    return 'object';
+            }
+            
+            throw new Error('Bad type: ' + utils.getClass(val));
+        },
+        
+        /**
+         * Applies for each item of list some function
+         * and checks for last element of the list
+         * 
+         * @param obj {Object | Array} - a list or a dict with child nodes
+         * @param func {Function} - the function for each item
+         */
+        forEachNode : function(obj, func) {
+            var type = utils.getType(obj),
+                isLast;
+        
+            switch (type) {
+                case 'array':
+                    isLast = obj.length - 1;
+                    
+                    obj.forEach(function(item, i) {
+                        func(i, item, i === isLast);
+                    });
+                    
+                    break;
+                
+                case 'object':
+                    var keys = Object.keys(obj).sort();
+                    
+                    isLast = keys.length - 1;
+                    
+                    keys.forEach(function(item, i) {
+                        func(item, obj[item], i === isLast);
+                    });
+                    
+                    break;
+            }
+            
+        },
+        
+        /**
+         * Implements the kind of an inheritance by
+         * using parent prototype and
+         * creating intermediate constructor
+         * 
+         * @param Child {Function} - a child constructor
+         * @param Parent {Function} - a parent constructor
+         */
+        inherits : (function() {
+            var F = function() {};
+            
+            return function(Child, Parent) {
+                F.prototype = Parent.prototype;
+                Child.prototype = new F();
+                Child.prototype.constructor = Child;
+            };
+        })(),
+        
+        /*
+         * Checks for a valid type of root node*
+         *
+         * @param {any type} jsonObj - a value for root node
+         * @returns {boolean} - true for an object or an array, false otherwise
+         */
+        isValidRoot : function(jsonObj) {
+            switch (utils.getType(jsonObj)) {
+                case 'object':
+                case 'array':
+                    return true;
+                default:
+                    return false;
+            }
+        },
+
+        /**
+         * Extends some object
+         */
+        extend : function(targetObj, sourceObj) {
+            for (var prop in sourceObj) {
+                if (sourceObj.hasOwnProperty(prop)) {
+                    targetObj[prop] = sourceObj[prop];
+                }
+            }
+        }
+    };
+    
+    
+    /* ---------- Node constructors ---------- */
+    
+    /**
+     * The factory for creating nodes of defined type.
+     * 
+     * ~~~ Node ~~~ is a structure element of an onject or an array
+     * with own label (a key of an object or an index of an array)
+     * and value of any json data type. The root object or array
+     * is a node without label.
+     * {...
+     * [+] "label": value,
+     * ...}
+     * 
+     * Markup:
+     * <li class="jsontree_node [jsontree_node_expanded]">
+     *     <span class="jsontree_label-wrapper">
+     *         <span class="jsontree_label">
+     *             <span class="jsontree_expand-button" />
+     *             "label"
+     *         </span>
+     *         :
+     *     </span>
+     *     <(div|span) class="jsontree_value jsontree_value_(object|array|boolean|null|number|string)">
+     *         ...
+     *     </(div|span)>
+     * </li>
+     *
+     * @param label {string} - key name
+     * @param val {Object | Array | string | number | boolean | null} - a value of node
+     * @param isLast {boolean} - true if node is last in list of siblings
+     * 
+     * @return {Node}
+     */
+    function Node(label, val, isLast) {
+        var nodeType = utils.getType(val);
+        
+        if (nodeType in Node.CONSTRUCTORS) {
+            return new Node.CONSTRUCTORS[nodeType](label, val, isLast);
+        } else {
+            throw new Error('Bad type: ' + utils.getClass(val));
+        }
+    }
+    
+    Node.CONSTRUCTORS = {
+        'boolean' : NodeBoolean,
+        'number'  : NodeNumber,
+        'string'  : NodeString,
+        'null'    : NodeNull,
+        'object'  : NodeObject,
+        'array'   : NodeArray  
+    };
+    
+    
+    /*
+     * The constructor for simple types (string, number, boolean, null)
+     * {...
+     * [+] "label": value,
+     * ...}
+     * value = string || number || boolean || null
+     *
+     * Markup:
+     * <li class="jsontree_node">
+     *     <span class="jsontree_label-wrapper">
+     *         <span class="jsontree_label">"age"</span>
+     *         :
+     *     </span>
+     *     <span class="jsontree_value jsontree_value_(number|boolean|string|null)">25</span>
+     *     ,
+     * </li>
+     *
+     * @abstract
+     * @param label {string} - key name
+     * @param val {string | number | boolean | null} - a value of simple types
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function _NodeSimple(label, val, isLast) {
+        if (this.constructor === _NodeSimple) {
+            throw new Error('This is abstract class');
+        }
+        
+        var self = this,
+            el = document.createElement('li'),
+            labelEl,
+            template = function(label, val) {
+                var str = '\
+                    <span class="jsontree_label-wrapper">\
+                        <span class="jsontree_label">"' +
+                            label +
+                        '"</span> : \
+                    </span>\
+                    <span class="jsontree_value-wrapper">\
+                        <span class="jsontree_value jsontree_value_' + self.type + '">' +
+                            val +
+                        '</span>' +
+                        (!isLast ? ',' : '') + 
+                    '</span>';
+    
+                return str;
+            };
+            
+        self.label = label;
+        self.isComplex = false;
+    
+        el.classList.add('jsontree_node');
+        el.innerHTML = template(label, val);
+    
+        self.el = el;
+
+        labelEl = el.querySelector('.jsontree_label');
+    
+        labelEl.addEventListener('click', function(e) {
+            if (e.altKey) {
+                self.toggleMarked();
+                return;
+            }
+
+            if (e.shiftKey) {
+                document.getSelection().removeAllRanges();
+                alert(self.getJSONPath());
+                return;
+            }
+        }, false);
+    }
+
+    _NodeSimple.prototype = {
+        constructor : _NodeSimple,
+
+        /**
+         * Mark node
+         */
+        mark : function() {
+            this.el.classList.add('jsontree_node_marked');    
+        },
+
+        /**
+         * Unmark node
+         */
+        unmark : function() {
+            this.el.classList.remove('jsontree_node_marked');    
+        },
+
+        /**
+         * Mark or unmark node
+         */
+        toggleMarked : function() {
+            this.el.classList.toggle('jsontree_node_marked');    
+        },
+
+        /**
+         * Expands parent node of this node
+         *
+         * @param isRecursive {boolean} - if true, expands all parent nodes
+         *                                (from node to root)
+         */
+        expandParent : function(isRecursive) {
+            if (!this.parent) {
+                return;
+            }
+               
+            this.parent.expand(); 
+            this.parent.expandParent(isRecursive);
+        },
+
+        /**
+         * Returns JSON-path of this 
+         * 
+         * @param isInDotNotation {boolean} - kind of notation for returned json-path
+         *                                    (by default, in bracket notation)
+         * @returns {string}
+         */
+        getJSONPath : function(isInDotNotation) {
+            if (this.isRoot) {
+                return "$";
+            }
+
+            var currentPath;
+
+            if (this.parent.type === 'array') {
+                currentPath = "[" + this.label + "]";
+            } else {
+                currentPath = isInDotNotation ? "." + this.label : "['" + this.label + "']";
+            }
+
+            return this.parent.getJSONPath(isInDotNotation) + currentPath; 
+        }
+    };
+    
+    
+    /*
+     * The constructor for boolean values
+     * {...
+     * [+] "label": boolean,
+     * ...}
+     * boolean = true || false
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {boolean} - value of boolean type, true or false
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeBoolean(label, val, isLast) {
+        this.type = "boolean";
+    
+        _NodeSimple.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeBoolean,_NodeSimple);
+    
+    
+    /*
+     * The constructor for number values
+     * {...
+     * [+] "label": number,
+     * ...}
+     * number = 123
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {number} - value of number type, for example 123
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeNumber(label, val, isLast) {
+        this.type = "number";
+    
+        _NodeSimple.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeNumber,_NodeSimple);
+    
+    
+    /*
+     * The constructor for string values
+     * {...
+     * [+] "label": string,
+     * ...}
+     * string = "abc"
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {string} - value of string type, for example "abc"
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeString(label, val, isLast) {
+        this.type = "string";
+    
+        _NodeSimple.call(this, label, '"' + val + '"', isLast);
+    }
+    utils.inherits(NodeString,_NodeSimple);
+    
+    
+    /*
+     * The constructor for null values
+     * {...
+     * [+] "label": null,
+     * ...}
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {null} - value (only null)
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeNull(label, val, isLast) {
+        this.type = "null";
+    
+        _NodeSimple.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeNull,_NodeSimple);
+    
+    
+    /*
+     * The constructor for complex types (object, array)
+     * {...
+     * [+] "label": value,
+     * ...}
+     * value = object || array
+     *
+     * Markup:
+     * <li class="jsontree_node jsontree_node_(object|array) [expanded]">
+     *     <span class="jsontree_label-wrapper">
+     *         <span class="jsontree_label">
+     *             <span class="jsontree_expand-button" />
+     *             "label"
+     *         </span>
+     *         :
+     *     </span>
+     *     <div class="jsontree_value">
+     *         <b>{</b>
+     *         <ul class="jsontree_child-nodes" />
+     *         <b>}</b>
+     *         ,
+     *     </div>
+     * </li>
+     *
+     * @abstract
+     * @param label {string} - key name
+     * @param val {Object | Array} - a value of complex types, object or array
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function _NodeComplex(label, val, isLast) {
+        if (this.constructor === _NodeComplex) {
+            throw new Error('This is abstract class');
+        }
+        
+        var self = this,
+            el = document.createElement('li'),
+            template = function(label, sym) {
+                var comma = (!isLast) ? ',' : '',
+                    str = '\
+                        <div class="jsontree_value-wrapper">\
+                            <div class="jsontree_value jsontree_value_' + self.type + '">\
+                                <b>' + sym[0] + '</b>\
+                                <span class="jsontree_show-more">&hellip;</span>\
+                                <ul class="jsontree_child-nodes"></ul>\
+                                <b>' + sym[1] + '</b>' +
+                            '</div>' + comma +
+                        '</div>';
+    
+                if (label !== null) {
+                    str = '\
+                        <span class="jsontree_label-wrapper">\
+                            <span class="jsontree_label">' +
+                                '<span class="jsontree_expand-button"></span>' +
+                                '"' + label +
+                            '"</span> : \
+                        </span>' + str;
+                }
+    
+                return str;
+            },
+            childNodesUl,
+            labelEl,
+            moreContentEl,
+            childNodes = [];
+    
+        self.label = label;
+        self.isComplex = true;
+    
+        el.classList.add('jsontree_node');
+        el.classList.add('jsontree_node_complex');
+        el.innerHTML = template(label, self.sym);
+    
+        childNodesUl = el.querySelector('.jsontree_child-nodes');
+    
+        if (label !== null) {
+            labelEl = el.querySelector('.jsontree_label');
+            moreContentEl = el.querySelector('.jsontree_show-more');
+    
+            labelEl.addEventListener('click', function(e) {
+                if (e.altKey) {
+                    self.toggleMarked();
+                    return;
+                }
+
+                if (e.shiftKey) {
+                    document.getSelection().removeAllRanges();
+                    alert(self.getJSONPath());
+                    return;
+                }
+
+                self.toggle(e.ctrlKey || e.metaKey);
+            }, false);
+            
+            moreContentEl.addEventListener('click', function(e) {
+                self.toggle(e.ctrlKey || e.metaKey);
+            }, false);
+    
+            self.isRoot = false;
+        } else {
+            self.isRoot = true;
+            self.parent = null;
+    
+            el.classList.add('jsontree_node_expanded');
+        }
+    
+        self.el = el;
+        self.childNodes = childNodes;
+        self.childNodesUl = childNodesUl;
+    
+        utils.forEachNode(val, function(label, node, isLast) {
+            self.addChild(new Node(label, node, isLast));
+        });
+    
+        self.isEmpty = !Boolean(childNodes.length);
+        if (self.isEmpty) {
+            el.classList.add('jsontree_node_empty');
+        }
+    }
+
+    utils.inherits(_NodeComplex, _NodeSimple);
+    
+    utils.extend(_NodeComplex.prototype, {
+        constructor : _NodeComplex,
+        
+        /*
+         * Add child node to list of child nodes
+         *
+         * @param child {Node} - child node
+         */
+        addChild : function(child) {
+            this.childNodes.push(child);
+            this.childNodesUl.appendChild(child.el);
+            child.parent = this;
+        },
+    
+        /*
+         * Expands this list of node child nodes
+         *
+         * @param isRecursive {boolean} - if true, expands all child nodes
+         */
+        expand : function(isRecursive){
+            if (this.isEmpty) {
+                return;
+            }
+            
+            if (!this.isRoot) {
+                this.el.classList.add('jsontree_node_expanded');
+            }
+    
+            if (isRecursive) {
+                this.childNodes.forEach(function(item, i) {
+                    if (item.isComplex) {
+                        item.expand(isRecursive);
+                    }
+                });
+            }
+        },
+    
+        /*
+         * Collapses this list of node child nodes
+         *
+         * @param isRecursive {boolean} - if true, collapses all child nodes
+         */
+        collapse : function(isRecursive) {
+            if (this.isEmpty) {
+                return;
+            }
+            
+            if (!this.isRoot) {
+                this.el.classList.remove('jsontree_node_expanded');
+            }
+    
+            if (isRecursive) {
+                this.childNodes.forEach(function(item, i) {
+                    if (item.isComplex) {
+                        item.collapse(isRecursive);
+                    }
+                });
+            }
+        },
+    
+        /*
+         * Expands collapsed or collapses expanded node
+         *
+         * @param {boolean} isRecursive - Expand all child nodes if this node is expanded
+         *                                and collapse it otherwise
+         */
+        toggle : function(isRecursive) {
+            if (this.isEmpty) {
+                return;
+            }
+            
+            this.el.classList.toggle('jsontree_node_expanded');
+            
+            if (isRecursive) {
+                var isExpanded = this.el.classList.contains('jsontree_node_expanded');
+                
+                this.childNodes.forEach(function(item, i) {
+                    if (item.isComplex) {
+                        item[isExpanded ? 'expand' : 'collapse'](isRecursive);
+                    }
+                });
+            }
+        },
+
+        /**
+         * Find child nodes that match some conditions and handle it
+         * 
+         * @param {Function} matcher
+         * @param {Function} handler
+         * @param {boolean} isRecursive
+         */
+        findChildren : function(matcher, handler, isRecursive) {
+            if (this.isEmpty) {
+                return;
+            }
+            
+            this.childNodes.forEach(function(item, i) {
+                if (matcher(item)) {
+                    handler(item);
+                }
+
+                if (item.isComplex && isRecursive) {
+                    item.findChildren(matcher, handler, isRecursive);
+                }
+            });
+        }
+    });
+    
+    
+    /*
+     * The constructor for object values
+     * {...
+     * [+] "label": object,
+     * ...}
+     * object = {"abc": "def"}
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {Object} - value of object type, {"abc": "def"}
+     * @param isLast {boolean} - true if node is last in list of siblings
+     */
+    function NodeObject(label, val, isLast) {
+        this.sym = ['{', '}'];
+        this.type = "object";
+    
+        _NodeComplex.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeObject,_NodeComplex);
+    
+    
+    /*
+     * The constructor for array values
+     * {...
+     * [+] "label": array,
+     * ...}
+     * array = [1,2,3]
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {Array} - value of array type, [1,2,3]
+     * @param isLast {boolean} - true if node is last in list of siblings
+     */
+    function NodeArray(label, val, isLast) {
+        this.sym = ['[', ']'];
+        this.type = "array";
+    
+        _NodeComplex.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeArray, _NodeComplex);
+    
+    
+    /* ---------- The tree constructor ---------- */
+    
+    /*
+     * The constructor for json tree.
+     * It contains only one Node (Array or Object), without property name.
+     * CSS-styles of .tree define main tree styles like font-family,
+     * font-size and own margins.
+     *
+     * Markup:
+     * <ul class="jsontree_tree clearfix">
+     *     {Node}
+     * </ul>
+     *
+     * @constructor
+     * @param jsonObj {Object | Array} - data for tree
+     * @param domEl {DOMElement} - DOM-element, wrapper for tree
+     */
+    function Tree(jsonObj, domEl) {
+        this.wrapper = document.createElement('ul');
+        this.wrapper.className = 'jsontree_tree clearfix';
+        
+        this.rootNode = null;
+        
+        this.sourceJSONObj = jsonObj;
+
+        this.loadData(jsonObj);
+        this.appendTo(domEl);
+    }
+    
+    Tree.prototype = {
+        constructor : Tree,
+        
+        /**
+         * Fill new data in current json tree
+         *
+         * @param {Object | Array} jsonObj - json-data
+         */
+        loadData : function(jsonObj) {
+            if (!utils.isValidRoot(jsonObj)) {
+                alert('The root should be an object or an array');
+                return;
+            }
+
+            this.sourceJSONObj = jsonObj;
+            
+            this.rootNode = new Node(null, jsonObj, 'last');
+            this.wrapper.innerHTML = '';
+            this.wrapper.appendChild(this.rootNode.el);
+        },
+        
+        /**
+         * Appends tree to DOM-element (or move it to new place)
+         *
+         * @param {DOMElement} domEl 
+         */
+        appendTo : function(domEl) {
+            domEl.appendChild(this.wrapper);
+        },
+        
+        /**
+         * Expands all tree nodes (objects or arrays) recursively
+         *
+         * @param {Function} filterFunc - 'true' if this node should be expanded
+         */
+        expand : function(filterFunc) {
+            if (this.rootNode.isComplex) {
+                if (typeof filterFunc == 'function') {
+                    this.rootNode.childNodes.forEach(function(item, i) {
+                        if (item.isComplex && filterFunc(item)) {
+                            item.expand();
+                        }
+                    });
+                } else {
+                    this.rootNode.expand('recursive');
+                }
+            }
+        },
+       
+        /**
+         * Collapses all tree nodes (objects or arrays) recursively
+         */
+        collapse : function() {
+            if (typeof this.rootNode.collapse === 'function') {
+                this.rootNode.collapse('recursive');
+            }
+        },
+
+        /**
+         * Returns the source json-string (pretty-printed)
+         * 
+         * @param {boolean} isPrettyPrinted - 'true' for pretty-printed string
+         * @returns {string} - for exemple, '{"a":2,"b":3}'
+         */
+        toSourceJSON : function(isPrettyPrinted) {
+            if (!isPrettyPrinted) {
+                return JSON.stringify(this.sourceJSONObj);
+            }
+
+            var DELIMETER = "[%^$#$%^%]",
+                jsonStr = JSON.stringify(this.sourceJSONObj, null, DELIMETER);
+
+            jsonStr = jsonStr.split("\n").join("<br />");
+            jsonStr = jsonStr.split(DELIMETER).join("&nbsp;&nbsp;&nbsp;&nbsp;");
+
+            return jsonStr;
+        },
+
+        /**
+         * Find all nodes that match some conditions and handle it
+         */
+        findAndHandle : function(matcher, handler) {
+            this.rootNode.findChildren(matcher, handler, 'isRecursive');
+        },
+
+        /**
+         * Unmark all nodes
+         */
+        unmarkAll : function() {
+            this.rootNode.findChildren(function(node) {
+                return true;
+            }, function(node) {
+                node.unmark();
+            }, 'isRecursive');
+        }
+    };
+
+    
+    /* ---------- Public methods ---------- */
+    return {
+        /**
+         * Creates new tree by data and appends it to the DOM-element
+         * 
+         * @param jsonObj {Object | Array} - json-data
+         * @param domEl {DOMElement} - the wrapper element
+         * @returns {Tree}
+         */
+        create : function(jsonObj, domEl) {
+            return new Tree(jsonObj, domEl);
+        }
+    };
+})();

demo/flip_image.py

@@ -12,13 +12,15 @@ def flip2(image):
     start = time()
     return np.fliplr(image)
 
+def flip10(i1, i2, i3, i4, i5):
+    return i1 + i2
 
-gr.Interface(flip, 
-             gr.inputs.Image(), 
+gr.Interface(flip10, 
+             ["image"] * 5, 
              ["image"],
              examples=[
-                 ["images/cheetah1.jpg"],
-                 ["images/cheetah2.jpg"],
-                 ["images/lion.jpg"],
+                 ["images/cheetah1.jpg"] * 5,
+                 ["images/cheetah2.jpg"] * 5,
+                 ["images/lion.jpg"] * 5,
              ]
              ).launch()

gradio.egg-info/SOURCES.txt

@@ -33,7 +33,9 @@ gradio/static/css/interfaces/output/image.css
 gradio/static/css/interfaces/output/key_values.css
 gradio/static/css/interfaces/output/label.css
 gradio/static/css/interfaces/output/textbox.css
+gradio/static/css/vendor/icons.svg
 gradio/static/css/vendor/jquery-ui.css
+gradio/static/css/vendor/jsonTree.css
 gradio/static/css/vendor/tui-color-picker.css
 gradio/static/css/vendor/tui-image-editor.css
 gradio/static/css/vendor/images/ui-bg_flat_0_aaaaaa_40x100.png
@@ -81,6 +83,7 @@ gradio/static/js/vendor/html2canvas.min.js
 gradio/static/js/vendor/jquery-ui.min.js
 gradio/static/js/vendor/jquery.min.js
 gradio/static/js/vendor/jquery.ui.touch-punch.js
+gradio/static/js/vendor/jsonTree.js
 gradio/static/js/vendor/p5.dom.min.js
 gradio/static/js/vendor/p5.min.js
 gradio/static/js/vendor/p5.sound.min.js

gradio/outputs.py

@@ -208,6 +208,95 @@ class KeyValues(AbstractOutput):
         }
 
 
+class HighlightedText(AbstractOutput):
+    '''
+    Component creates text that contains spans that are highlighted by category or numerical value.
+    Output is represent as a list of Tuple pairs, where the first element represents the span of text represented by the tuple, and the second element represents the category or value of the text.
+    Output type: List[Tuple[str, Union[float, str]]]
+    '''
+
+    def __init__(self, category_colors=None, label=None):
+        '''
+        Parameters:
+        category_colors (Dict[str, float]): 
+        label (str): component name in interface.
+        '''
+        super().__init__(label)
+
+    def get_template_context(self):
+        return {
+            **super().get_template_context()
+        }
+
+    @classmethod
+    def get_shortcut_implementations(cls):
+        return {
+            "highlight": {},
+        }
+
+    def postprocess(self, prediction):
+        if isinstance(prediction, str) or isinstance(prediction, int) or isinstance(prediction, float):
+            return str(prediction)
+        else:
+            raise ValueError("The `Textbox` output interface expects an output that is one of: a string, or"
+                             "an int/float that can be converted to a string.")
+
+
+class JSON(AbstractOutput):
+    '''
+    Used for JSON output. Expects a JSON string or a Python dictionary or list that can be converted to JSON. 
+    Output type: Union[str, Dict[str, Any], List[Any]]
+    '''
+
+    def __init__(self, label=None):
+        '''
+        Parameters:
+        label (str): component name in interface.
+        '''
+        super().__init__(label)
+
+    def postprocess(self, prediction):
+        if isinstance(prediction, dict) or isinstance(prediction, list):
+            return json.dumps(prediction)
+        elif isinstance(prediction, str):
+            return prediction
+        else:
+            raise ValueError("The `JSON` output interface expects an output that is a dictionary or list "
+                             "or a preformatted JSON string.")
+
+    @classmethod
+    def get_shortcut_implementations(cls):
+        return {
+            "json": {},
+        }
+
+
+class HTML(AbstractOutput):
+    '''
+    Used for HTML output. Expects a JSON string or a Python dictionary or list that can be converted to JSON. 
+    Output type: str
+    '''
+
+    def __init__(self, label=None):
+        '''
+        Parameters:
+        label (str): component name in interface.
+        '''
+        super().__init__(label)
+
+    def postprocess(self, prediction):
+        if isinstance(prediction, str):
+            return prediction
+        else:
+            raise ValueError("The `HTML` output interface expects an output that is a str.")
+
+    @classmethod
+    def get_shortcut_implementations(cls):
+        return {
+            "html": {},
+        }
+
+
 # Automatically adds all shortcut implementations in AbstractInput into a dictionary.
 shortcuts = {}
 for cls in AbstractOutput.__subclasses__():

gradio/static/css/style.css

@@ -65,6 +65,7 @@ button.secondary {
   background-color: whitesmoke;
   border-right: solid 4px whitesmoke;
   border-left: solid 4px whitesmoke;
+  border-bottom: solid 4px whitesmoke;
 }
 #examples th {
   padding: 8px 16px;

gradio/static/css/vendor/icons.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="11" height="22"><defs><linearGradient id="a"><stop offset="0"/><stop offset="1" stop-opacity="0"/></linearGradient><radialGradient xlink:href="#a" cx="9.739" cy="9.716" fx="9.739" fy="9.716" r="3.709" gradientUnits="userSpaceOnUse"/></defs><g stroke="#000" fill="none"><g transform="translate(-129.5 -333.862) translate(0 .188)"><rect transform="matrix(.962 0 0 .971 4.943 11.548)" ry="2" rx="2" y="332.362" x="130" height="10.337" width="10.432" opacity=".5"/><g><path d="M132 339.175h6" opacity=".5"/><path d="M135 336.175v6" opacity=".5"/></g></g><g transform="translate(-129.5 -333.862)"><rect width="10.432" height="10.337" x="130" y="332.362" rx="2" ry="2" transform="matrix(.962 0 0 .971 4.943 22.736)" opacity=".5"/><path d="M132 350.362h6" opacity=".5"/></g></g></svg>

gradio/static/css/vendor/jsonTree.css

@@ -0,0 +1,107 @@
+/*
+ * JSON Tree Viewer
+ * http://github.com/summerstyle/jsonTreeViewer
+ *
+ * Copyright 2017 Vera Lobacheva (http://iamvera.com)
+ * Released under the MIT license (LICENSE.txt)
+ */
+
+/* Background for the tree. May use for <body> element */
+.jsontree_bg {
+    background: #FFF;
+}
+
+/* Styles for the container of the tree (e.g. fonts, margins etc.) */
+.jsontree_tree {
+    margin-left: 30px;
+    font-family: 'PT Mono', monospace;
+    font-size: 14px;
+}
+
+/* Styles for a list of child nodes */
+.jsontree_child-nodes {
+    display: none;
+    margin-left: 35px; 
+    margin-bottom: 5px;
+    line-height: 2;
+}
+.jsontree_node_expanded > .jsontree_value-wrapper > .jsontree_value > .jsontree_child-nodes {
+    display: block;
+}
+
+/* Styles for labels */
+.jsontree_label-wrapper {
+    float: left;
+    margin-right: 8px;
+}
+.jsontree_label {
+    font-weight: normal;
+    vertical-align: top;
+    color: #000;
+    position: relative;
+    padding: 1px;
+    border-radius: 4px;
+    cursor: default;
+}
+.jsontree_node_marked > .jsontree_label-wrapper > .jsontree_label {
+    background: #fff2aa;
+}
+
+/* Styles for values */
+.jsontree_value-wrapper {
+    display: block;
+    overflow: hidden;
+}
+.jsontree_node_complex > .jsontree_value-wrapper {
+    overflow: inherit;
+}
+.jsontree_value { 
+    vertical-align: top;
+    display: inline;
+}
+.jsontree_value_null {
+    color: #777;
+    font-weight: bold;
+}
+.jsontree_value_string {
+    color: #025900;
+    font-weight: bold;
+}
+.jsontree_value_number {
+    color: #000E59;
+    font-weight: bold;
+}
+.jsontree_value_boolean {
+    color: #600100;
+    font-weight: bold;
+}
+
+/* Styles for active elements */
+.jsontree_expand-button {
+    position: absolute;
+    top: 3px;
+    left: -15px;
+    display: block;
+    width: 11px;
+    height: 11px;
+    background-image: url('icons.svg');
+}
+.jsontree_node_expanded > .jsontree_label-wrapper > .jsontree_label > .jsontree_expand-button {
+    background-position: 0 -11px;
+}
+.jsontree_show-more {
+    cursor: pointer;
+}
+.jsontree_node_expanded > .jsontree_value-wrapper > .jsontree_value > .jsontree_show-more {
+    display: none;
+}
+.jsontree_node_empty > .jsontree_label-wrapper > .jsontree_label > .jsontree_expand-button,
+.jsontree_node_empty > .jsontree_value-wrapper > .jsontree_value > .jsontree_show-more {
+    display: none !important;
+}
+.jsontree_node_complex > .jsontree_label-wrapper > .jsontree_label {
+    cursor: pointer;
+}
+.jsontree_node_empty > .jsontree_label-wrapper > .jsontree_label {
+    cursor: default !important;
+}

gradio/static/js/interfaces/input/dropdown.js

@@ -23,5 +23,6 @@ const dropdown = {
   load_example: function(data) {
     let child = this.choices.indexOf(data) + 1;
     this.target.find("option:nth-child(" + child + ")").prop("selected", true);
+    this.target.find(".dropdown").selectmenu("refresh");
   }
 }

gradio/static/js/interfaces/input/slider.js

@@ -38,7 +38,7 @@ const slider = {
     this.target.find("input").val(this.default);
   },
   load_example: function(data) {
-    this.target.find("input").val(data);   
-    this.target.find(".value").text(data);
+    this.target.find(".slider").slider("option", "value", data)
+    this.target.find(".ui-slider-handle").text(data);
   }
 }

gradio/static/js/vendor/jsonTree.js

@@ -0,0 +1,819 @@
+/**
+ * JSON Tree library (a part of jsonTreeViewer)
+ * http://github.com/summerstyle/jsonTreeViewer
+ *
+ * Copyright 2017 Vera Lobacheva (http://iamvera.com)
+ * Released under the MIT license (LICENSE.txt)
+ */
+
+var jsonTree = (function() {
+    
+    /* ---------- Utilities ---------- */
+    var utils = {
+        
+        /*
+         * Returns js-"class" of value
+         * 
+         * @param val {any type} - value
+         * @returns {string} - for example, "[object Function]"
+         */
+        getClass : function(val) {
+            return Object.prototype.toString.call(val);
+        },
+        
+        /**
+         * Checks for a type of value (for valid JSON data types).
+         * In other cases - throws an exception
+         * 
+         * @param val {any type} - the value for new node
+         * @returns {string} ("object" | "array" | "null" | "boolean" | "number" | "string")
+         */
+        getType : function(val) {
+            if (val === null) {
+                return 'null';
+            }
+            
+            switch (typeof val) {
+                case 'number':
+                    return 'number';
+                
+                case 'string':
+                    return 'string';
+                
+                case 'boolean':
+                    return 'boolean';
+            }
+            
+            switch(utils.getClass(val)) {
+                case '[object Array]':
+                    return 'array';
+                
+                case '[object Object]':
+                    return 'object';
+            }
+            
+            throw new Error('Bad type: ' + utils.getClass(val));
+        },
+        
+        /**
+         * Applies for each item of list some function
+         * and checks for last element of the list
+         * 
+         * @param obj {Object | Array} - a list or a dict with child nodes
+         * @param func {Function} - the function for each item
+         */
+        forEachNode : function(obj, func) {
+            var type = utils.getType(obj),
+                isLast;
+        
+            switch (type) {
+                case 'array':
+                    isLast = obj.length - 1;
+                    
+                    obj.forEach(function(item, i) {
+                        func(i, item, i === isLast);
+                    });
+                    
+                    break;
+                
+                case 'object':
+                    var keys = Object.keys(obj).sort();
+                    
+                    isLast = keys.length - 1;
+                    
+                    keys.forEach(function(item, i) {
+                        func(item, obj[item], i === isLast);
+                    });
+                    
+                    break;
+            }
+            
+        },
+        
+        /**
+         * Implements the kind of an inheritance by
+         * using parent prototype and
+         * creating intermediate constructor
+         * 
+         * @param Child {Function} - a child constructor
+         * @param Parent {Function} - a parent constructor
+         */
+        inherits : (function() {
+            var F = function() {};
+            
+            return function(Child, Parent) {
+                F.prototype = Parent.prototype;
+                Child.prototype = new F();
+                Child.prototype.constructor = Child;
+            };
+        })(),
+        
+        /*
+         * Checks for a valid type of root node*
+         *
+         * @param {any type} jsonObj - a value for root node
+         * @returns {boolean} - true for an object or an array, false otherwise
+         */
+        isValidRoot : function(jsonObj) {
+            switch (utils.getType(jsonObj)) {
+                case 'object':
+                case 'array':
+                    return true;
+                default:
+                    return false;
+            }
+        },
+
+        /**
+         * Extends some object
+         */
+        extend : function(targetObj, sourceObj) {
+            for (var prop in sourceObj) {
+                if (sourceObj.hasOwnProperty(prop)) {
+                    targetObj[prop] = sourceObj[prop];
+                }
+            }
+        }
+    };
+    
+    
+    /* ---------- Node constructors ---------- */
+    
+    /**
+     * The factory for creating nodes of defined type.
+     * 
+     * ~~~ Node ~~~ is a structure element of an onject or an array
+     * with own label (a key of an object or an index of an array)
+     * and value of any json data type. The root object or array
+     * is a node without label.
+     * {...
+     * [+] "label": value,
+     * ...}
+     * 
+     * Markup:
+     * <li class="jsontree_node [jsontree_node_expanded]">
+     *     <span class="jsontree_label-wrapper">
+     *         <span class="jsontree_label">
+     *             <span class="jsontree_expand-button" />
+     *             "label"
+     *         </span>
+     *         :
+     *     </span>
+     *     <(div|span) class="jsontree_value jsontree_value_(object|array|boolean|null|number|string)">
+     *         ...
+     *     </(div|span)>
+     * </li>
+     *
+     * @param label {string} - key name
+     * @param val {Object | Array | string | number | boolean | null} - a value of node
+     * @param isLast {boolean} - true if node is last in list of siblings
+     * 
+     * @return {Node}
+     */
+    function Node(label, val, isLast) {
+        var nodeType = utils.getType(val);
+        
+        if (nodeType in Node.CONSTRUCTORS) {
+            return new Node.CONSTRUCTORS[nodeType](label, val, isLast);
+        } else {
+            throw new Error('Bad type: ' + utils.getClass(val));
+        }
+    }
+    
+    Node.CONSTRUCTORS = {
+        'boolean' : NodeBoolean,
+        'number'  : NodeNumber,
+        'string'  : NodeString,
+        'null'    : NodeNull,
+        'object'  : NodeObject,
+        'array'   : NodeArray  
+    };
+    
+    
+    /*
+     * The constructor for simple types (string, number, boolean, null)
+     * {...
+     * [+] "label": value,
+     * ...}
+     * value = string || number || boolean || null
+     *
+     * Markup:
+     * <li class="jsontree_node">
+     *     <span class="jsontree_label-wrapper">
+     *         <span class="jsontree_label">"age"</span>
+     *         :
+     *     </span>
+     *     <span class="jsontree_value jsontree_value_(number|boolean|string|null)">25</span>
+     *     ,
+     * </li>
+     *
+     * @abstract
+     * @param label {string} - key name
+     * @param val {string | number | boolean | null} - a value of simple types
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function _NodeSimple(label, val, isLast) {
+        if (this.constructor === _NodeSimple) {
+            throw new Error('This is abstract class');
+        }
+        
+        var self = this,
+            el = document.createElement('li'),
+            labelEl,
+            template = function(label, val) {
+                var str = '\
+                    <span class="jsontree_label-wrapper">\
+                        <span class="jsontree_label">"' +
+                            label +
+                        '"</span> : \
+                    </span>\
+                    <span class="jsontree_value-wrapper">\
+                        <span class="jsontree_value jsontree_value_' + self.type + '">' +
+                            val +
+                        '</span>' +
+                        (!isLast ? ',' : '') + 
+                    '</span>';
+    
+                return str;
+            };
+            
+        self.label = label;
+        self.isComplex = false;
+    
+        el.classList.add('jsontree_node');
+        el.innerHTML = template(label, val);
+    
+        self.el = el;
+
+        labelEl = el.querySelector('.jsontree_label');
+    
+        labelEl.addEventListener('click', function(e) {
+            if (e.altKey) {
+                self.toggleMarked();
+                return;
+            }
+
+            if (e.shiftKey) {
+                document.getSelection().removeAllRanges();
+                alert(self.getJSONPath());
+                return;
+            }
+        }, false);
+    }
+
+    _NodeSimple.prototype = {
+        constructor : _NodeSimple,
+
+        /**
+         * Mark node
+         */
+        mark : function() {
+            this.el.classList.add('jsontree_node_marked');    
+        },
+
+        /**
+         * Unmark node
+         */
+        unmark : function() {
+            this.el.classList.remove('jsontree_node_marked');    
+        },
+
+        /**
+         * Mark or unmark node
+         */
+        toggleMarked : function() {
+            this.el.classList.toggle('jsontree_node_marked');    
+        },
+
+        /**
+         * Expands parent node of this node
+         *
+         * @param isRecursive {boolean} - if true, expands all parent nodes
+         *                                (from node to root)
+         */
+        expandParent : function(isRecursive) {
+            if (!this.parent) {
+                return;
+            }
+               
+            this.parent.expand(); 
+            this.parent.expandParent(isRecursive);
+        },
+
+        /**
+         * Returns JSON-path of this 
+         * 
+         * @param isInDotNotation {boolean} - kind of notation for returned json-path
+         *                                    (by default, in bracket notation)
+         * @returns {string}
+         */
+        getJSONPath : function(isInDotNotation) {
+            if (this.isRoot) {
+                return "$";
+            }
+
+            var currentPath;
+
+            if (this.parent.type === 'array') {
+                currentPath = "[" + this.label + "]";
+            } else {
+                currentPath = isInDotNotation ? "." + this.label : "['" + this.label + "']";
+            }
+
+            return this.parent.getJSONPath(isInDotNotation) + currentPath; 
+        }
+    };
+    
+    
+    /*
+     * The constructor for boolean values
+     * {...
+     * [+] "label": boolean,
+     * ...}
+     * boolean = true || false
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {boolean} - value of boolean type, true or false
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeBoolean(label, val, isLast) {
+        this.type = "boolean";
+    
+        _NodeSimple.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeBoolean,_NodeSimple);
+    
+    
+    /*
+     * The constructor for number values
+     * {...
+     * [+] "label": number,
+     * ...}
+     * number = 123
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {number} - value of number type, for example 123
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeNumber(label, val, isLast) {
+        this.type = "number";
+    
+        _NodeSimple.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeNumber,_NodeSimple);
+    
+    
+    /*
+     * The constructor for string values
+     * {...
+     * [+] "label": string,
+     * ...}
+     * string = "abc"
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {string} - value of string type, for example "abc"
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeString(label, val, isLast) {
+        this.type = "string";
+    
+        _NodeSimple.call(this, label, '"' + val + '"', isLast);
+    }
+    utils.inherits(NodeString,_NodeSimple);
+    
+    
+    /*
+     * The constructor for null values
+     * {...
+     * [+] "label": null,
+     * ...}
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {null} - value (only null)
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function NodeNull(label, val, isLast) {
+        this.type = "null";
+    
+        _NodeSimple.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeNull,_NodeSimple);
+    
+    
+    /*
+     * The constructor for complex types (object, array)
+     * {...
+     * [+] "label": value,
+     * ...}
+     * value = object || array
+     *
+     * Markup:
+     * <li class="jsontree_node jsontree_node_(object|array) [expanded]">
+     *     <span class="jsontree_label-wrapper">
+     *         <span class="jsontree_label">
+     *             <span class="jsontree_expand-button" />
+     *             "label"
+     *         </span>
+     *         :
+     *     </span>
+     *     <div class="jsontree_value">
+     *         <b>{</b>
+     *         <ul class="jsontree_child-nodes" />
+     *         <b>}</b>
+     *         ,
+     *     </div>
+     * </li>
+     *
+     * @abstract
+     * @param label {string} - key name
+     * @param val {Object | Array} - a value of complex types, object or array
+     * @param isLast {boolean} - true if node is last in list of parent childNodes
+     */
+    function _NodeComplex(label, val, isLast) {
+        if (this.constructor === _NodeComplex) {
+            throw new Error('This is abstract class');
+        }
+        
+        var self = this,
+            el = document.createElement('li'),
+            template = function(label, sym) {
+                var comma = (!isLast) ? ',' : '',
+                    str = '\
+                        <div class="jsontree_value-wrapper">\
+                            <div class="jsontree_value jsontree_value_' + self.type + '">\
+                                <b>' + sym[0] + '</b>\
+                                <span class="jsontree_show-more">&hellip;</span>\
+                                <ul class="jsontree_child-nodes"></ul>\
+                                <b>' + sym[1] + '</b>' +
+                            '</div>' + comma +
+                        '</div>';
+    
+                if (label !== null) {
+                    str = '\
+                        <span class="jsontree_label-wrapper">\
+                            <span class="jsontree_label">' +
+                                '<span class="jsontree_expand-button"></span>' +
+                                '"' + label +
+                            '"</span> : \
+                        </span>' + str;
+                }
+    
+                return str;
+            },
+            childNodesUl,
+            labelEl,
+            moreContentEl,
+            childNodes = [];
+    
+        self.label = label;
+        self.isComplex = true;
+    
+        el.classList.add('jsontree_node');
+        el.classList.add('jsontree_node_complex');
+        el.innerHTML = template(label, self.sym);
+    
+        childNodesUl = el.querySelector('.jsontree_child-nodes');
+    
+        if (label !== null) {
+            labelEl = el.querySelector('.jsontree_label');
+            moreContentEl = el.querySelector('.jsontree_show-more');
+    
+            labelEl.addEventListener('click', function(e) {
+                if (e.altKey) {
+                    self.toggleMarked();
+                    return;
+                }
+
+                if (e.shiftKey) {
+                    document.getSelection().removeAllRanges();
+                    alert(self.getJSONPath());
+                    return;
+                }
+
+                self.toggle(e.ctrlKey || e.metaKey);
+            }, false);
+            
+            moreContentEl.addEventListener('click', function(e) {
+                self.toggle(e.ctrlKey || e.metaKey);
+            }, false);
+    
+            self.isRoot = false;
+        } else {
+            self.isRoot = true;
+            self.parent = null;
+    
+            el.classList.add('jsontree_node_expanded');
+        }
+    
+        self.el = el;
+        self.childNodes = childNodes;
+        self.childNodesUl = childNodesUl;
+    
+        utils.forEachNode(val, function(label, node, isLast) {
+            self.addChild(new Node(label, node, isLast));
+        });
+    
+        self.isEmpty = !Boolean(childNodes.length);
+        if (self.isEmpty) {
+            el.classList.add('jsontree_node_empty');
+        }
+    }
+
+    utils.inherits(_NodeComplex, _NodeSimple);
+    
+    utils.extend(_NodeComplex.prototype, {
+        constructor : _NodeComplex,
+        
+        /*
+         * Add child node to list of child nodes
+         *
+         * @param child {Node} - child node
+         */
+        addChild : function(child) {
+            this.childNodes.push(child);
+            this.childNodesUl.appendChild(child.el);
+            child.parent = this;
+        },
+    
+        /*
+         * Expands this list of node child nodes
+         *
+         * @param isRecursive {boolean} - if true, expands all child nodes
+         */
+        expand : function(isRecursive){
+            if (this.isEmpty) {
+                return;
+            }
+            
+            if (!this.isRoot) {
+                this.el.classList.add('jsontree_node_expanded');
+            }
+    
+            if (isRecursive) {
+                this.childNodes.forEach(function(item, i) {
+                    if (item.isComplex) {
+                        item.expand(isRecursive);
+                    }
+                });
+            }
+        },
+    
+        /*
+         * Collapses this list of node child nodes
+         *
+         * @param isRecursive {boolean} - if true, collapses all child nodes
+         */
+        collapse : function(isRecursive) {
+            if (this.isEmpty) {
+                return;
+            }
+            
+            if (!this.isRoot) {
+                this.el.classList.remove('jsontree_node_expanded');
+            }
+    
+            if (isRecursive) {
+                this.childNodes.forEach(function(item, i) {
+                    if (item.isComplex) {
+                        item.collapse(isRecursive);
+                    }
+                });
+            }
+        },
+    
+        /*
+         * Expands collapsed or collapses expanded node
+         *
+         * @param {boolean} isRecursive - Expand all child nodes if this node is expanded
+         *                                and collapse it otherwise
+         */
+        toggle : function(isRecursive) {
+            if (this.isEmpty) {
+                return;
+            }
+            
+            this.el.classList.toggle('jsontree_node_expanded');
+            
+            if (isRecursive) {
+                var isExpanded = this.el.classList.contains('jsontree_node_expanded');
+                
+                this.childNodes.forEach(function(item, i) {
+                    if (item.isComplex) {
+                        item[isExpanded ? 'expand' : 'collapse'](isRecursive);
+                    }
+                });
+            }
+        },
+
+        /**
+         * Find child nodes that match some conditions and handle it
+         * 
+         * @param {Function} matcher
+         * @param {Function} handler
+         * @param {boolean} isRecursive
+         */
+        findChildren : function(matcher, handler, isRecursive) {
+            if (this.isEmpty) {
+                return;
+            }
+            
+            this.childNodes.forEach(function(item, i) {
+                if (matcher(item)) {
+                    handler(item);
+                }
+
+                if (item.isComplex && isRecursive) {
+                    item.findChildren(matcher, handler, isRecursive);
+                }
+            });
+        }
+    });
+    
+    
+    /*
+     * The constructor for object values
+     * {...
+     * [+] "label": object,
+     * ...}
+     * object = {"abc": "def"}
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {Object} - value of object type, {"abc": "def"}
+     * @param isLast {boolean} - true if node is last in list of siblings
+     */
+    function NodeObject(label, val, isLast) {
+        this.sym = ['{', '}'];
+        this.type = "object";
+    
+        _NodeComplex.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeObject,_NodeComplex);
+    
+    
+    /*
+     * The constructor for array values
+     * {...
+     * [+] "label": array,
+     * ...}
+     * array = [1,2,3]
+     *
+     * @constructor
+     * @param label {string} - key name
+     * @param val {Array} - value of array type, [1,2,3]
+     * @param isLast {boolean} - true if node is last in list of siblings
+     */
+    function NodeArray(label, val, isLast) {
+        this.sym = ['[', ']'];
+        this.type = "array";
+    
+        _NodeComplex.call(this, label, val, isLast);
+    }
+    utils.inherits(NodeArray, _NodeComplex);
+    
+    
+    /* ---------- The tree constructor ---------- */
+    
+    /*
+     * The constructor for json tree.
+     * It contains only one Node (Array or Object), without property name.
+     * CSS-styles of .tree define main tree styles like font-family,
+     * font-size and own margins.
+     *
+     * Markup:
+     * <ul class="jsontree_tree clearfix">
+     *     {Node}
+     * </ul>
+     *
+     * @constructor
+     * @param jsonObj {Object | Array} - data for tree
+     * @param domEl {DOMElement} - DOM-element, wrapper for tree
+     */
+    function Tree(jsonObj, domEl) {
+        this.wrapper = document.createElement('ul');
+        this.wrapper.className = 'jsontree_tree clearfix';
+        
+        this.rootNode = null;
+        
+        this.sourceJSONObj = jsonObj;
+
+        this.loadData(jsonObj);
+        this.appendTo(domEl);
+    }
+    
+    Tree.prototype = {
+        constructor : Tree,
+        
+        /**
+         * Fill new data in current json tree
+         *
+         * @param {Object | Array} jsonObj - json-data
+         */
+        loadData : function(jsonObj) {
+            if (!utils.isValidRoot(jsonObj)) {
+                alert('The root should be an object or an array');
+                return;
+            }
+
+            this.sourceJSONObj = jsonObj;
+            
+            this.rootNode = new Node(null, jsonObj, 'last');
+            this.wrapper.innerHTML = '';
+            this.wrapper.appendChild(this.rootNode.el);
+        },
+        
+        /**
+         * Appends tree to DOM-element (or move it to new place)
+         *
+         * @param {DOMElement} domEl 
+         */
+        appendTo : function(domEl) {
+            domEl.appendChild(this.wrapper);
+        },
+        
+        /**
+         * Expands all tree nodes (objects or arrays) recursively
+         *
+         * @param {Function} filterFunc - 'true' if this node should be expanded
+         */
+        expand : function(filterFunc) {
+            if (this.rootNode.isComplex) {
+                if (typeof filterFunc == 'function') {
+                    this.rootNode.childNodes.forEach(function(item, i) {
+                        if (item.isComplex && filterFunc(item)) {
+                            item.expand();
+                        }
+                    });
+                } else {
+                    this.rootNode.expand('recursive');
+                }
+            }
+        },
+       
+        /**
+         * Collapses all tree nodes (objects or arrays) recursively
+         */
+        collapse : function() {
+            if (typeof this.rootNode.collapse === 'function') {
+                this.rootNode.collapse('recursive');
+            }
+        },
+
+        /**
+         * Returns the source json-string (pretty-printed)
+         * 
+         * @param {boolean} isPrettyPrinted - 'true' for pretty-printed string
+         * @returns {string} - for exemple, '{"a":2,"b":3}'
+         */
+        toSourceJSON : function(isPrettyPrinted) {
+            if (!isPrettyPrinted) {
+                return JSON.stringify(this.sourceJSONObj);
+            }
+
+            var DELIMETER = "[%^$#$%^%]",
+                jsonStr = JSON.stringify(this.sourceJSONObj, null, DELIMETER);
+
+            jsonStr = jsonStr.split("\n").join("<br />");
+            jsonStr = jsonStr.split(DELIMETER).join("&nbsp;&nbsp;&nbsp;&nbsp;");
+
+            return jsonStr;
+        },
+
+        /**
+         * Find all nodes that match some conditions and handle it
+         */
+        findAndHandle : function(matcher, handler) {
+            this.rootNode.findChildren(matcher, handler, 'isRecursive');
+        },
+
+        /**
+         * Unmark all nodes
+         */
+        unmarkAll : function() {
+            this.rootNode.findChildren(function(node) {
+                return true;
+            }, function(node) {
+                node.unmark();
+            }, 'isRecursive');
+        }
+    };
+
+    
+    /* ---------- Public methods ---------- */
+    return {
+        /**
+         * Creates new tree by data and appends it to the DOM-element
+         * 
+         * @param jsonObj {Object | Array} - json-data
+         * @param domEl {DOMElement} - the wrapper element
+         * @returns {Tree}
+         */
+        create : function(jsonObj, domEl) {
+            return new Tree(jsonObj, domEl);
+        }
+    };
+})();