Add footer_visible attribute

Signed-off-by: martinRenou <martin.renou@gmail.com>

Author: martinRenou

examples/ipympl.ipynb

@@ -48,6 +48,24 @@
     "fig.canvas.header_visible = False"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "fig.canvas.footer_visible = False"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "fig.canvas"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,

ipympl/backend_nbagg.py

@@ -151,6 +151,7 @@ class Canvas(DOMWidget, FigureCanvasWebAggCore):
     toolbar_position = Enum(['top', 'bottom', 'left', 'right'], default_value='left').tag(sync=True)
 
     header_visible = Bool(True).tag(sync=True)
+    footer_visible = Bool(True).tag(sync=True)
 
     _width = CInt().tag(sync=True)
     _height = CInt().tag(sync=True)

js/src/mpl_widget.js

@@ -17,6 +17,7 @@ var MPLCanvasModel = widgets.DOMWidgetModel.extend({
             _model_module_version: '^'+ version,
             _view_module_version: '^' + version,
             header_visible: true,
+            footer_visible: true,
             toolbar: null,
             toolbar_visible: true,
             toolbar_position: 'horizontal',
@@ -219,6 +220,7 @@ var MPLCanvasView = widgets.DOMWidgetView.extend({
             that._update_toolbar_position();
 
             that._update_header_visible();
+            that._update_footer_visible();
             that._update_toolbar_visible();
 
             that.model_events();
@@ -227,6 +229,7 @@ var MPLCanvasView = widgets.DOMWidgetView.extend({
 
     model_events: function() {
         this.model.on('change:header_visible', this._update_header_visible.bind(this));
+        this.model.on('change:footer_visible', this._update_footer_visible.bind(this));
         this.model.on('change:toolbar_visible', this._update_toolbar_visible.bind(this));
         this.model.on('change:toolbar_position', this._update_toolbar_position.bind(this));
         this.model.on('change:_figure_label', this._update_figure_label.bind(this));
@@ -238,6 +241,10 @@ var MPLCanvasView = widgets.DOMWidgetView.extend({
         this.header.style.display = this.model.get('header_visible') ? '': 'none';
     },
 
+    _update_footer_visible: function() {
+        this.footer.style.display = this.model.get('footer_visible') ? '': 'none';
+    },
+
     _update_toolbar_visible: function() {
         this.toolbar_view.el.style.display = this.model.get('toolbar_visible') ? '' : 'none';
     },