Python 2 support, spec update, missing npm dependency

Author: SylvainCorlay

ipywidgets/widgets/widget_upload.py

@@ -90,7 +90,7 @@ def __init__(self,
         self.compress_level = compress_level
         self.value = {}
 
-        super().__init__()
+        super(FileUpload, self).__init__()
 
     @validate('compress_level')
     def _valid_compress_level(self, proposal):

packages/controls/package-lock.json

@@ -43,6 +43,7 @@
     "d3-format": "^1.3.0",
     "jquery": "^3.1.1",
     "jquery-ui": "^1.12.1",
+    "pako": "^1.0.10",
     "underscore": "^1.8.3"
   },
   "devDependencies": {

packages/controls/package.json

@@ -345,6 +345,31 @@ Attribute        | Type             | Default          | Help
 `layout`         | reference to Layout widget | reference to new instance | 
 `style`          | reference to DescriptionStyle widget | reference to new instance | Styling customizations
 
+### FileUploadModel (@jupyter-widgets/controls, 1.4.0); FileUploadView (@jupyter-widgets/controls, 1.4.0)
+
+Attribute        | Type             | Default          | Help
+-----------------|------------------|------------------|----
+`_counter`       | number (integer) | `0`              | 
+`_dom_classes`   | array of string  | `[]`             | CSS classes applied to widget DOM element
+`_model_module`  | string           | `'@jupyter-widgets/controls'` | 
+`_model_module_version` | string           | `'1.4.0'`        | 
+`_model_name`    | string           | `'FileUploadModel'` | 
+`_view_module`   | string           | `'@jupyter-widgets/controls'` | 
+`_view_module_version` | string           | `'1.4.0'`        | 
+`_view_name`     | string           | `'FileUploadView'` | 
+`accept`         | string           | `''`             | Type of files the input accepts. None for all. See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-accept
+`compress_level` | number (integer) | `0`              | Compress level: from 1 to 9 - 0 for no compression
+`description`    | string           | `''`             | Description of the control.
+`description_tooltip` | `null` or string | `null`           | Tooltip for the description (defaults to description).
+`disabled`       | boolean          | `false`          | Enable or disable button
+`error`          | string           | `''`             | Error message
+`layout`         | reference to Layout widget | reference to new instance | 
+`li_content`     | array            | `[]`             | List of file content (bytes)
+`li_metadata`    | array            | `[]`             | List of file metadata
+`multiple`       | boolean          | `false`          | If true, allow for multiple files upload, else only accept one
+`style`          | reference to DescriptionStyle widget | reference to new instance | Styling customizations
+`style_button`   | string           | `''`             | Optional style for button (label element)
+
 ### FloatLogSliderModel (@jupyter-widgets/controls, 1.4.0); FloatLogSliderView (@jupyter-widgets/controls, 1.4.0)
 
 Attribute        | Type             | Default          | Help

packages/schema/jupyterwidgetmodels.latest.md

@@ -26,9 +26,9 @@
     regenerator-runtime "^0.13.2"
 
 "@blueprintjs/core@^3.15.0", "@blueprintjs/core@^3.9.0":
-  version "3.15.1"
-  resolved "https://registry.npmjs.org/@blueprintjs/core/-/core-3.15.1.tgz#9792e9fb7e2e066dd5339fadeaf2f85b1485832a"
-  integrity sha512-M8ltbqqlMZuZ6SEuqo/3Fr59ZcUfd8Er7ocbm7EACVfRW7dRhOCd/TKkf2kfICNtCDwznwXk0iAePLXZhUGtQg==
+  version "3.16.0"
+  resolved "https://registry.npmjs.org/@blueprintjs/core/-/core-3.16.0.tgz#7696c5119c5911ed7aeebf2217d89e79c526a8a5"
+  integrity sha512-mhacy/2DhZSu9RolXQ/v6B7izJ618cqYgI9O4BbU8yzTHMwsf4iRdoThEJuA2jDG3dvcQPd6+Ix9KZ6xy9fF8w==
   dependencies:
     "@blueprintjs/icons" "^3.8.0"
     "@types/dom4" "^2.0.1"
@@ -7353,7 +7353,7 @@ package-json@^6.3.0:
     registry-url "^5.0.0"
     semver "^6.1.1"
 
-pako@~1.0.5:
+pako@^1.0.10, pako@~1.0.5:
   version "1.0.10"
   resolved "https://registry.npmjs.org/pako/-/pako-1.0.10.tgz#4328badb5086a426aa90f541977d4955da5c9732"
   integrity sha512-0DTvPVU3ed8+HNXOu5Bs+o//Mbdj9VNQMUOe9oKCwh8l0GNwpTDMKCWbRjgtD291AWnkAgkqA/LOnQS8AmS1tw==