# GeoExt

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# `GeoExt.Popup`

Extends
  - Ext.Window
xtype
  `gx_popup`

class `GeoExt.``Popup`(config)
  Popups are a specialized Window that supports anchoring to a particular location in a MapPanel. When a popup is anchored to a location, that means that the popup will visibly point to the location on the map, and move accordingly when the map is panned or zoomed.

## Example Use

Sample code to create a popup anchored to a feature:

    var popup = new GeoExt.Popup({
        title: "My Popup",
        location: feature,
        width: 200,
        html: "<div>Popup content</div>",
        collapsible: true
    });

## Config Options

Configuration properties in addition to those listed for Ext.Window.

`ancCls`
  `String` CSS class name for the popup’s anchor.

`anchored`
  `Boolean` The popup begins anchored to its location. Default is `true`.

`anchorPosition`
  `String` Controls the anchor position for the popup. If set to `auto`, the anchor will be positioned on the top or the bottom of the window, minimizing map movement. Supported values are `bottom-left`, `bottom-right`, `top-left`, `top-right` or `auto`. Defaults to `auto`.

`location`
  `OpenLayers.Feature.Vector` or `OpenLayers.LonLat` or `OpenLayers.Pixel` or `OpenLayers.Geometry` A location for this popup’s anchor.

`map`
  `OpenLayers.Map` or `GeoExt.MapPanel` The map this popup will be anchored to (only required if `anchored` is set to true and the map cannot be derived from the `location`‘s layer.

`panIn`
  `Boolean` The popup should pan the map so that the popup is fully in view when it is rendered. Default is `true`.

`popupCls`
  `String` CSS class name for the popup DOM elements. Default is “gx-popup”.

`unpinnable`
  `Boolean` The popup should have a “unpin” tool that unanchors it from its location. Default is `true`.

## Public Methods

Public methods in addition to those listed for Ext.Window.

`Popup.``setSize`()

  Parameters: | w – `Integer` h – `Integer`

  Sets the size of the popup, taking into account the size of the anchor.

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