{
    "dataRoles": [{
            "displayName": "urls",
            "displayNameKey": "roles-urls-displayName",
            "name": "urls",
            "kind": "Grouping",
            "requiredTypes": [{ "text": true }],
            "description": "Urls of pictures, example: 'http://www.example.com/xx.png'",
            "descriptionKey": "roles-urls-description"
        },
        {
            "displayName": "tags",
            "displayNameKey": "roles-tags-displayName",
            "name": "tags",
            "kind": "Grouping",
            "requiredTypes": [{ "text": true }],
            "description": "text to be displayed with pictures",
            "descriptionKey": "roles-tags-description"
        }
    ],
    "objects": {
        "layout": {
            "displayName": "layout",
            "displayNameKey": "objects-layout-displayName",
            "properties": {
                "rowsCount": {
                    "type": {
                        "numeric": true
                    },
                    "displayName": "rowsCount",
                    "displayNameKey": "objects-layout-rowsCount-displayName",
                    "description": "How many rows?",
                    "descriptionKey": "objects-layout-rowsCount-descriptionKey"
                },
                "rowGap": {
                    "type": {
                        "numeric": true
                    },
                    "placeHolderText": "{value}%",
                    "displayName": "rowGap(%)",
                    "displayNameKey": "objects-layout-rowGap-displayName",
                    "description": "The distance moved during each cycle.(%)",
                    "descriptionKey": "objects-layout-rowGap-descriptionKey"
                },
                "columnGap": {
                    "type": {
                        "numeric": true
                    },
                    "placeHolderText": "msec",
                    "displayName": "columnGap(%)",
                    "displayNameKey": "objects-layout-columnGap-displayName",
                    "description": "How long a cycle takes? (msec)",
                    "descriptionKey": "objects-layout-columnGap-descriptionKey"
                }
            }
        },
        "animation": {
            "displayName": "animation",
            "displayNameKey": "objects-animation-displayName",
            "properties": {
                "stepLength": {
                    "type": {
                        "numeric": true
                    },
                    "displayName": "stepLength(%)",
                    "displayNameKey": "objects-animation-stepLength-displayName",
                    "description": "The distance moved during each cycle.(%)",
                    "descriptionKey": "objects-animation-stepLength-descriptionKey"
                },
                "interval": {
                    "type": {
                        "numeric": true
                    },
                    "placeHolderText": "numeric",
                    "displayName": "interval(msec)",
                    "displayNameKey": "objects-animation-interval-displayName",
                    "description": "How long a cycle takes? (msec)",
                    "descriptionKey": "objects-animation-interval-descriptionKey"
                }
            }
        },
        "tag": {
            "displayName": "tag",
            "displayNameKey": "objects-tag-displayName",
            "description": "text tag",
            "descriptionKey": "objects-tag-description",
            "properties": {
                "show": {
                    "type": {
                        "bool": true
                    },
                    "displayName": "show",
                    "displayNameKey": "objects-tag-show-displayName"
                },
                "textSize": {
                    "type": {
                        "numeric": true
                    },
                    "displayName": "textSize",
                    "displayNameKey": "objects-tag-textSize-displayName"
                },
                "position": {
                    "type": {
                        "enumeration": [{
                            "displayName": "above",
                            "displayNameKey": "objects-tag-position-enumeration-above-displayName",
                            "value": "above"
                        }, {
                            "displayName": "bottom",
                            "displayNameKey": "objects-tag-position-enumeration-bottom-displayName",
                            "value": "bottom"
                        }]
                    }
                },
                "fontColor": {
                    "type": {
                        "fill": {
                            "solid": {
                                "color": true
                            }
                        }
                    },
                    "displayName": "fontColor",
                    "displayNameKey": "objects-tag-fontColor-displayName"
                },
                "transparency": {
                    "type": {
                        "numeric": true
                    },
                    "displayName": "transparency",
                    "displayNameKey": "objects-tag-transparency-displayName"
                }
            }
        }
    },
    "dataViewMappings": [{
        "conditions": [{
            "urls": {
                "min": 1,
                "max": 1,
                "kind": "Grouping"
            },
            "tag": {
                "min": 0,
                "max": 1,
                "kind": "Grouping"
            }
        }],
        "categorical": {
            "categories": {
                "select": [{
                        "bind": {
                            "to": "urls"
                        }
                    },
                    {
                        "bind": {
                            "to": "tags"
                        }
                    }
                ],
                "dataReductionAlgorithm": {
                    "top": {}
                }
            }
        }
    }]
}