px-map-control-zoom.html

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<link rel="import" href="../polymer/polymer.html"/>

<!-- Local dependencies -->
<link rel="import" href="px-map-behavior-control.html">

<!--
The zoom control creates a set of buttons the user can tap to zoom in or out
of the map.

### Usage

    <px-map>
      <px-map-tile-layer url='https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png'></px-map-tile-layer>
      <px-map-control-zoom position="topright"></px-map-control-zoom>
    </px-map>

### Ordering/stacking controls

Multiple controls can be placed in the same position e.g. ('bottomright' for the
bottom right-hand corner of the map). Controls will stack automatically in the
reverse order they were placed in the DOM. This means that controls that appear
later in the DOM will be placed above those that appear earlier.

For example, this map has two controls in the same bottom right position, a zoom
control and a scale control:

    <px-map>
      <px-map-control-zoom position="bottomright"></px-map-control-zoom>
      <px-map-control-scale position="bottomright" imperial-units></px-map-control-zoom>
    </px-map>

When the map draws, the zoom control will be on top of the scale control in the
bottom right corner of the map.

### Styling
The following custom properties are available for styling:

Custom property | Description
:----------------|:-------------
`--px-map-control-button-background-color` | Background color for the map control buttons
`--px-map-control-button-text-color` | Text color for the map control buttons
`--px-map-control-button-border-width` | Border width for the map control buttons
`--px-map-control-button-border-color` | Border color for the map control buttons
`--px-map-control-button-background-color--hover` | Background color for the map control buttons when hovered
`--px-map-control-button-text-color--hover` | Text color for the map control buttons when hovered
`--px-map-control-button-border-color--disabled` | Border color for the map control buttons when disabled
`--px-map-control-button-text-color--disabled` | Text color for the map control buttons when disabled

@element px-map-control-zoom
@blurb ...
@homepage index.html
@demo index.html
-->

<dom-module id="px-map-control-zoom">
  <template>
    <style>
      :host { display: none }
    </style>
  </template>
</dom-module>
<script>
  Polymer({
    is: 'px-map-control-zoom',
    behaviors: [PxMapBehavior.ZoomControl]
  });
</script>