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Zoom to Overlay Selection #1317

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Zoom to Overlay Selection #1317

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2e21127
initial attempt at behavior, will move to plugin
galewis2 Apr 29, 2020
8d442f4
switch to function detection
galewis2 May 1, 2020
5efe593
switch to bounds.extend and avoid no bounds error
galewis2 May 1, 2020
3f0f952
use zoomSelected to enable/disable behaviour
galewis2 May 1, 2020
52054a7
switch to flytobounds
galewis2 May 4, 2020
68b74ae
combine actions
galewis2 May 4, 2020
a8ec61d
switch to snake_case
galewis2 May 4, 2020
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22 changes: 21 additions & 1 deletion folium/map.py
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,8 @@ class LayerControl(MacroElement):
autoZIndex : bool, default True
If true the control assigns zIndexes in increasing order to all of
its layers so that the order is preserved when switching them on/off.
zoom_selected : bool, default False
If true the map zooms to the selected layers.
**kwargs
Additional (possibly inherited) options. See
https://leafletjs.com/reference-1.6.0.html#control-layers
Expand Down Expand Up @@ -128,13 +130,31 @@ class LayerControl(MacroElement):
{%- for val in this.layers_untoggle.values() %}
{{ val }}.remove();
{%- endfor %}

{%- if this.zoom_selected is sameas true %}
{{this._parent.get_name()}}.on('overlayadd overlayremove', function(e) {
var bounds = L.latLngBounds([]);
var c = 0;
{{this._parent.get_name()}}.eachLayer(function(layer){
if (typeof layer.getBounds === 'function') {
bounds.extend(layer.getBounds());
c+=1;
}
});
if (c > 0) {
{{this._parent.get_name()}}.flyToBounds(bounds);
}
});
{%- endif %}

{% endmacro %}
""")

def __init__(self, position='topright', collapsed=True, autoZIndex=True,
def __init__(self, position='topright', collapsed=True, autoZIndex=True, zoom_selected=False,
**kwargs):
super(LayerControl, self).__init__()
self._name = 'LayerControl'
self.zoom_selected = zoom_selected
self.options = parse_options(
position=position,
collapsed=collapsed,
Expand Down