[76] | 1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
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| 2 | * full list of contributors). Published under the Clear BSD license. |
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| 3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
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| 4 | * full text of the license. */ |
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| 5 | |
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| 6 | /** |
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| 7 | * @requires OpenLayers/Control.js |
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| 8 | */ |
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| 9 | |
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| 10 | /** |
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| 11 | * Class: OpenLayers.Control.LayerSwitcher |
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| 12 | * The LayerSwitcher control displays a table of contents for the map. This |
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| 13 | * allows the user interface to switch between BaseLasyers and to show or hide |
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| 14 | * Overlays. By default the switcher is shown minimized on the right edge of |
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| 15 | * the map, the user may expand it by clicking on the handle. |
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| 16 | * |
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| 17 | * To create the LayerSwitcher outside of the map, pass the Id of a html div |
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| 18 | * as the first argument to the constructor. |
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| 19 | * |
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| 20 | * Inherits from: |
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| 21 | * - <OpenLayers.Control> |
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| 22 | */ |
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| 23 | OpenLayers.Control.LayerSwitcher = |
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| 24 | OpenLayers.Class(OpenLayers.Control, { |
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| 25 | |
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| 26 | /** |
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| 27 | * APIProperty: roundedCorner |
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| 28 | * {Boolean} If true the Rico library is used for rounding the corners |
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| 29 | * of the layer switcher div, defaults to true. |
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| 30 | */ |
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| 31 | roundedCorner: true, |
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| 32 | |
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| 33 | /** |
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| 34 | * APIProperty: roundedCornerColor |
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| 35 | * {String} The color of the rounded corners, only applies if roundedCorner |
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| 36 | * is true, defaults to "darkblue". |
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| 37 | */ |
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| 38 | roundedCornerColor: "darkblue", |
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| 39 | |
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| 40 | /** |
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| 41 | * Property: layerStates |
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| 42 | * {Array(Object)} Basically a copy of the "state" of the map's layers |
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| 43 | * the last time the control was drawn. We have this in order to avoid |
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| 44 | * unnecessarily redrawing the control. |
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| 45 | */ |
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| 46 | layerStates: null, |
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| 47 | |
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| 48 | |
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| 49 | // DOM Elements |
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| 50 | |
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| 51 | /** |
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| 52 | * Property: layersDiv |
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| 53 | * {DOMElement} |
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| 54 | */ |
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| 55 | layersDiv: null, |
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| 56 | |
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| 57 | /** |
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| 58 | * Property: baseLayersDiv |
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| 59 | * {DOMElement} |
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| 60 | */ |
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| 61 | baseLayersDiv: null, |
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| 62 | |
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| 63 | /** |
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| 64 | * Property: baseLayers |
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| 65 | * {Array(<OpenLayers.Layer>)} |
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| 66 | */ |
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| 67 | baseLayers: null, |
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| 68 | |
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| 69 | |
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| 70 | /** |
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| 71 | * Property: dataLbl |
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| 72 | * {DOMElement} |
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| 73 | */ |
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| 74 | dataLbl: null, |
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| 75 | |
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| 76 | /** |
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| 77 | * Property: dataLayersDiv |
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| 78 | * {DOMElement} |
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| 79 | */ |
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| 80 | dataLayersDiv: null, |
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| 81 | |
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| 82 | /** |
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| 83 | * Property: dataLayers |
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| 84 | * {Array(<OpenLayers.Layer>)} |
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| 85 | */ |
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| 86 | dataLayers: null, |
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| 87 | |
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| 88 | |
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| 89 | /** |
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| 90 | * Property: minimizeDiv |
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| 91 | * {DOMElement} |
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| 92 | */ |
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| 93 | minimizeDiv: null, |
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| 94 | |
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| 95 | /** |
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| 96 | * Property: maximizeDiv |
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| 97 | * {DOMElement} |
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| 98 | */ |
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| 99 | maximizeDiv: null, |
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| 100 | |
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| 101 | /** |
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| 102 | * APIProperty: ascending |
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| 103 | * {Boolean} |
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| 104 | */ |
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| 105 | ascending: true, |
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| 106 | |
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| 107 | /** |
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| 108 | * Constructor: OpenLayers.Control.LayerSwitcher |
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| 109 | * |
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| 110 | * Parameters: |
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| 111 | * options - {Object} |
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| 112 | */ |
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| 113 | initialize: function(options) { |
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| 114 | OpenLayers.Control.prototype.initialize.apply(this, arguments); |
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| 115 | this.layerStates = []; |
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| 116 | }, |
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| 117 | |
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| 118 | /** |
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| 119 | * APIMethod: destroy |
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| 120 | */ |
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| 121 | destroy: function() { |
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| 122 | |
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| 123 | OpenLayers.Event.stopObservingElement(this.div); |
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| 124 | |
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| 125 | OpenLayers.Event.stopObservingElement(this.minimizeDiv); |
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| 126 | OpenLayers.Event.stopObservingElement(this.maximizeDiv); |
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| 127 | |
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| 128 | //clear out layers info and unregister their events |
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| 129 | this.clearLayersArray("base"); |
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| 130 | this.clearLayersArray("data"); |
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| 131 | |
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| 132 | this.map.events.un({ |
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| 133 | "addlayer": this.redraw, |
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| 134 | "changelayer": this.redraw, |
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| 135 | "removelayer": this.redraw, |
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| 136 | "changebaselayer": this.redraw, |
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| 137 | scope: this |
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| 138 | }); |
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| 139 | |
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| 140 | OpenLayers.Control.prototype.destroy.apply(this, arguments); |
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| 141 | }, |
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| 142 | |
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| 143 | /** |
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| 144 | * Method: setMap |
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| 145 | * |
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| 146 | * Properties: |
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| 147 | * map - {<OpenLayers.Map>} |
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| 148 | */ |
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| 149 | setMap: function(map) { |
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| 150 | OpenLayers.Control.prototype.setMap.apply(this, arguments); |
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| 151 | |
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| 152 | this.map.events.on({ |
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| 153 | "addlayer": this.redraw, |
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| 154 | "changelayer": this.redraw, |
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| 155 | "removelayer": this.redraw, |
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| 156 | "changebaselayer": this.redraw, |
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| 157 | scope: this |
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| 158 | }); |
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| 159 | }, |
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| 160 | |
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| 161 | /** |
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| 162 | * Method: draw |
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| 163 | * |
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| 164 | * Returns: |
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| 165 | * {DOMElement} A reference to the DIV DOMElement containing the |
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| 166 | * switcher tabs. |
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| 167 | */ |
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| 168 | draw: function() { |
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| 169 | OpenLayers.Control.prototype.draw.apply(this); |
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| 170 | |
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| 171 | // create layout divs |
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| 172 | this.loadContents(); |
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| 173 | |
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| 174 | // set mode to minimize |
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| 175 | if(!this.outsideViewport) { |
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| 176 | this.minimizeControl(); |
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| 177 | } |
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| 178 | |
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| 179 | // populate div with current info |
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| 180 | this.redraw(); |
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| 181 | |
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| 182 | return this.div; |
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| 183 | }, |
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| 184 | |
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| 185 | /** |
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| 186 | * Method: clearLayersArray |
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| 187 | * User specifies either "base" or "data". we then clear all the |
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| 188 | * corresponding listeners, the div, and reinitialize a new array. |
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| 189 | * |
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| 190 | * Parameters: |
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| 191 | * layersType - {String} |
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| 192 | */ |
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| 193 | clearLayersArray: function(layersType) { |
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| 194 | var layers = this[layersType + "Layers"]; |
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| 195 | if (layers) { |
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| 196 | for(var i=0, len=layers.length; i<len ; i++) { |
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| 197 | var layer = layers[i]; |
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| 198 | OpenLayers.Event.stopObservingElement(layer.inputElem); |
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| 199 | OpenLayers.Event.stopObservingElement(layer.labelSpan); |
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| 200 | } |
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| 201 | } |
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| 202 | this[layersType + "LayersDiv"].innerHTML = ""; |
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| 203 | this[layersType + "Layers"] = []; |
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| 204 | }, |
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| 205 | |
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| 206 | |
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| 207 | /** |
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| 208 | * Method: checkRedraw |
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| 209 | * Checks if the layer state has changed since the last redraw() call. |
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| 210 | * |
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| 211 | * Returns: |
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| 212 | * {Boolean} The layer state changed since the last redraw() call. |
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| 213 | */ |
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| 214 | checkRedraw: function() { |
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| 215 | var redraw = false; |
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| 216 | if ( !this.layerStates.length || |
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| 217 | (this.map.layers.length != this.layerStates.length) ) { |
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| 218 | redraw = true; |
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| 219 | } else { |
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| 220 | for (var i=0, len=this.layerStates.length; i<len; i++) { |
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| 221 | var layerState = this.layerStates[i]; |
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| 222 | var layer = this.map.layers[i]; |
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| 223 | if ( (layerState.name != layer.name) || |
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| 224 | (layerState.inRange != layer.inRange) || |
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| 225 | (layerState.id != layer.id) || |
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| 226 | (layerState.visibility != layer.visibility) ) { |
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| 227 | redraw = true; |
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| 228 | break; |
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| 229 | } |
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| 230 | } |
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| 231 | } |
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| 232 | return redraw; |
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| 233 | }, |
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| 234 | |
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| 235 | /** |
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| 236 | * Method: redraw |
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| 237 | * Goes through and takes the current state of the Map and rebuilds the |
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| 238 | * control to display that state. Groups base layers into a |
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| 239 | * radio-button group and lists each data layer with a checkbox. |
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| 240 | * |
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| 241 | * Returns: |
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| 242 | * {DOMElement} A reference to the DIV DOMElement containing the control |
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| 243 | */ |
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| 244 | redraw: function() { |
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| 245 | //if the state hasn't changed since last redraw, no need |
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| 246 | // to do anything. Just return the existing div. |
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| 247 | if (!this.checkRedraw()) { |
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| 248 | return this.div; |
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| 249 | } |
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| 250 | |
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| 251 | //clear out previous layers |
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| 252 | this.clearLayersArray("base"); |
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| 253 | this.clearLayersArray("data"); |
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| 254 | |
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| 255 | var containsOverlays = false; |
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| 256 | var containsBaseLayers = false; |
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| 257 | |
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| 258 | // Save state -- for checking layer if the map state changed. |
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| 259 | // We save this before redrawing, because in the process of redrawing |
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| 260 | // we will trigger more visibility changes, and we want to not redraw |
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| 261 | // and enter an infinite loop. |
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| 262 | var len = this.map.layers.length; |
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| 263 | this.layerStates = new Array(len); |
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| 264 | for (var i=0; i <len; i++) { |
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| 265 | var layer = this.map.layers[i]; |
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| 266 | this.layerStates[i] = { |
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| 267 | 'name': layer.name, |
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| 268 | 'visibility': layer.visibility, |
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| 269 | 'inRange': layer.inRange, |
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| 270 | 'id': layer.id |
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| 271 | }; |
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| 272 | } |
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| 273 | |
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| 274 | var layers = this.map.layers.slice(); |
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| 275 | if (!this.ascending) { layers.reverse(); } |
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| 276 | for(var i=0, len=layers.length; i<len; i++) { |
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| 277 | var layer = layers[i]; |
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| 278 | var baseLayer = layer.isBaseLayer; |
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| 279 | |
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| 280 | if (layer.displayInLayerSwitcher) { |
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| 281 | |
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| 282 | if (baseLayer) { |
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| 283 | containsBaseLayers = true; |
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| 284 | } else { |
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| 285 | containsOverlays = true; |
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| 286 | } |
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| 287 | |
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| 288 | // only check a baselayer if it is *the* baselayer, check data |
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| 289 | // layers if they are visible |
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| 290 | var checked = (baseLayer) ? (layer == this.map.baseLayer) |
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| 291 | : layer.getVisibility(); |
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| 292 | |
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| 293 | // create input element |
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| 294 | var inputElem = document.createElement("input"); |
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| 295 | inputElem.id = this.id + "_input_" + layer.name; |
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| 296 | inputElem.name = (baseLayer) ? this.id + "_baseLayers" : layer.name; |
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| 297 | inputElem.type = (baseLayer) ? "radio" : "checkbox"; |
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| 298 | inputElem.value = layer.name; |
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| 299 | inputElem.checked = checked; |
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| 300 | inputElem.defaultChecked = checked; |
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| 301 | |
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| 302 | if (!baseLayer && !layer.inRange) { |
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| 303 | inputElem.disabled = true; |
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| 304 | } |
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| 305 | var context = { |
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| 306 | 'inputElem': inputElem, |
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| 307 | 'layer': layer, |
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| 308 | 'layerSwitcher': this |
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| 309 | }; |
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| 310 | OpenLayers.Event.observe(inputElem, "mouseup", |
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| 311 | OpenLayers.Function.bindAsEventListener(this.onInputClick, |
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| 312 | context) |
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| 313 | ); |
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| 314 | |
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| 315 | // create span |
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| 316 | var labelSpan = document.createElement("span"); |
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| 317 | OpenLayers.Element.addClass(labelSpan, "labelSpan") |
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| 318 | if (!baseLayer && !layer.inRange) { |
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| 319 | labelSpan.style.color = "gray"; |
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| 320 | } |
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| 321 | labelSpan.innerHTML = layer.name; |
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| 322 | labelSpan.style.verticalAlign = (baseLayer) ? "bottom" |
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| 323 | : "baseline"; |
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| 324 | OpenLayers.Event.observe(labelSpan, "click", |
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| 325 | OpenLayers.Function.bindAsEventListener(this.onInputClick, |
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| 326 | context) |
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| 327 | ); |
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| 328 | // create line break |
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| 329 | var br = document.createElement("br"); |
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| 330 | |
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| 331 | |
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| 332 | var groupArray = (baseLayer) ? this.baseLayers |
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| 333 | : this.dataLayers; |
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| 334 | groupArray.push({ |
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| 335 | 'layer': layer, |
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| 336 | 'inputElem': inputElem, |
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| 337 | 'labelSpan': labelSpan |
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| 338 | }); |
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| 339 | |
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| 340 | |
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| 341 | var groupDiv = (baseLayer) ? this.baseLayersDiv |
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| 342 | : this.dataLayersDiv; |
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| 343 | groupDiv.appendChild(inputElem); |
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| 344 | groupDiv.appendChild(labelSpan); |
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| 345 | groupDiv.appendChild(br); |
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| 346 | } |
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| 347 | } |
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| 348 | |
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| 349 | // if no overlays, dont display the overlay label |
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| 350 | this.dataLbl.style.display = (containsOverlays) ? "" : "none"; |
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| 351 | |
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| 352 | // if no baselayers, dont display the baselayer label |
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| 353 | this.baseLbl.style.display = (containsBaseLayers) ? "" : "none"; |
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| 354 | |
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| 355 | return this.div; |
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| 356 | }, |
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| 357 | |
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| 358 | /** |
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| 359 | * Method: |
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| 360 | * A label has been clicked, check or uncheck its corresponding input |
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| 361 | * |
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| 362 | * Parameters: |
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| 363 | * e - {Event} |
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| 364 | * |
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| 365 | * Context: |
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| 366 | * - {DOMElement} inputElem |
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| 367 | * - {<OpenLayers.Control.LayerSwitcher>} layerSwitcher |
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| 368 | * - {<OpenLayers.Layer>} layer |
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| 369 | */ |
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| 370 | |
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| 371 | onInputClick: function(e) { |
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| 372 | |
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| 373 | if (!this.inputElem.disabled) { |
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| 374 | if (this.inputElem.type == "radio") { |
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| 375 | this.inputElem.checked = true; |
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| 376 | this.layer.map.setBaseLayer(this.layer); |
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| 377 | } else { |
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| 378 | this.inputElem.checked = !this.inputElem.checked; |
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| 379 | this.layerSwitcher.updateMap(); |
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| 380 | } |
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| 381 | } |
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| 382 | OpenLayers.Event.stop(e); |
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| 383 | }, |
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| 384 | |
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| 385 | /** |
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| 386 | * Method: onLayerClick |
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| 387 | * Need to update the map accordingly whenever user clicks in either of |
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| 388 | * the layers. |
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| 389 | * |
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| 390 | * Parameters: |
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| 391 | * e - {Event} |
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| 392 | */ |
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| 393 | onLayerClick: function(e) { |
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| 394 | this.updateMap(); |
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| 395 | }, |
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| 396 | |
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| 397 | |
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| 398 | /** |
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| 399 | * Method: updateMap |
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| 400 | * Cycles through the loaded data and base layer input arrays and makes |
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| 401 | * the necessary calls to the Map object such that that the map's |
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| 402 | * visual state corresponds to what the user has selected in |
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| 403 | * the control. |
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| 404 | */ |
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| 405 | updateMap: function() { |
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| 406 | |
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| 407 | // set the newly selected base layer |
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| 408 | for(var i=0, len=this.baseLayers.length; i<len; i++) { |
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| 409 | var layerEntry = this.baseLayers[i]; |
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| 410 | if (layerEntry.inputElem.checked) { |
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| 411 | this.map.setBaseLayer(layerEntry.layer, false); |
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| 412 | } |
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| 413 | } |
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| 414 | |
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| 415 | // set the correct visibilities for the overlays |
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| 416 | for(var i=0, len=this.dataLayers.length; i<len; i++) { |
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| 417 | var layerEntry = this.dataLayers[i]; |
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| 418 | layerEntry.layer.setVisibility(layerEntry.inputElem.checked); |
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| 419 | } |
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| 420 | |
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| 421 | }, |
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| 422 | |
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| 423 | /** |
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| 424 | * Method: maximizeControl |
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| 425 | * Set up the labels and divs for the control |
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| 426 | * |
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| 427 | * Parameters: |
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| 428 | * e - {Event} |
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| 429 | */ |
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| 430 | maximizeControl: function(e) { |
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| 431 | |
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| 432 | // set the div's width and height to empty values, so |
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| 433 | // the div dimensions can be controlled by CSS |
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| 434 | this.div.style.width = ""; |
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| 435 | this.div.style.height = ""; |
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| 436 | |
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| 437 | this.showControls(false); |
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| 438 | |
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| 439 | if (e != null) { |
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| 440 | OpenLayers.Event.stop(e); |
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| 441 | } |
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| 442 | }, |
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| 443 | |
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| 444 | /** |
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| 445 | * Method: minimizeControl |
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| 446 | * Hide all the contents of the control, shrink the size, |
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| 447 | * add the maximize icon |
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| 448 | * |
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| 449 | * Parameters: |
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| 450 | * e - {Event} |
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| 451 | */ |
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| 452 | minimizeControl: function(e) { |
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| 453 | |
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| 454 | // to minimize the control we set its div's width |
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| 455 | // and height to 0px, we cannot just set "display" |
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| 456 | // to "none" because it would hide the maximize |
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| 457 | // div |
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| 458 | this.div.style.width = "0px"; |
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| 459 | this.div.style.height = "0px"; |
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| 460 | |
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| 461 | this.showControls(true); |
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| 462 | |
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| 463 | if (e != null) { |
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| 464 | OpenLayers.Event.stop(e); |
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| 465 | } |
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| 466 | }, |
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| 467 | |
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| 468 | /** |
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| 469 | * Method: showControls |
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| 470 | * Hide/Show all LayerSwitcher controls depending on whether we are |
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| 471 | * minimized or not |
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| 472 | * |
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| 473 | * Parameters: |
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| 474 | * minimize - {Boolean} |
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| 475 | */ |
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| 476 | showControls: function(minimize) { |
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| 477 | |
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| 478 | this.maximizeDiv.style.display = minimize ? "" : "none"; |
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| 479 | this.minimizeDiv.style.display = minimize ? "none" : ""; |
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| 480 | |
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| 481 | this.layersDiv.style.display = minimize ? "none" : ""; |
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| 482 | }, |
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| 483 | |
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| 484 | /** |
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| 485 | * Method: loadContents |
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| 486 | * Set up the labels and divs for the control |
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| 487 | */ |
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| 488 | loadContents: function() { |
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| 489 | |
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| 490 | //configure main div |
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| 491 | |
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| 492 | OpenLayers.Event.observe(this.div, "mouseup", |
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| 493 | OpenLayers.Function.bindAsEventListener(this.mouseUp, this)); |
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| 494 | OpenLayers.Event.observe(this.div, "click", |
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| 495 | this.ignoreEvent); |
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| 496 | OpenLayers.Event.observe(this.div, "mousedown", |
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| 497 | OpenLayers.Function.bindAsEventListener(this.mouseDown, this)); |
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| 498 | OpenLayers.Event.observe(this.div, "dblclick", this.ignoreEvent); |
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| 499 | |
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| 500 | // layers list div |
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| 501 | this.layersDiv = document.createElement("div"); |
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| 502 | this.layersDiv.id = this.id + "_layersDiv"; |
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| 503 | OpenLayers.Element.addClass(this.layersDiv, "layersDiv"); |
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| 504 | |
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| 505 | this.baseLbl = document.createElement("div"); |
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| 506 | this.baseLbl.innerHTML = OpenLayers.i18n("baseLayer"); |
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| 507 | OpenLayers.Element.addClass(this.baseLbl, "baseLbl"); |
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| 508 | |
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| 509 | this.baseLayersDiv = document.createElement("div"); |
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| 510 | OpenLayers.Element.addClass(this.baseLayersDiv, "baseLayersDiv"); |
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| 511 | |
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| 512 | this.dataLbl = document.createElement("div"); |
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| 513 | this.dataLbl.innerHTML = OpenLayers.i18n("overlays"); |
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| 514 | OpenLayers.Element.addClass(this.dataLbl, "dataLbl"); |
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| 515 | |
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| 516 | this.dataLayersDiv = document.createElement("div"); |
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| 517 | OpenLayers.Element.addClass(this.dataLayersDiv, "dataLayersDiv"); |
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| 518 | |
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| 519 | if (this.ascending) { |
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| 520 | this.layersDiv.appendChild(this.baseLbl); |
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| 521 | this.layersDiv.appendChild(this.baseLayersDiv); |
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| 522 | this.layersDiv.appendChild(this.dataLbl); |
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| 523 | this.layersDiv.appendChild(this.dataLayersDiv); |
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| 524 | } else { |
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| 525 | this.layersDiv.appendChild(this.dataLbl); |
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| 526 | this.layersDiv.appendChild(this.dataLayersDiv); |
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| 527 | this.layersDiv.appendChild(this.baseLbl); |
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| 528 | this.layersDiv.appendChild(this.baseLayersDiv); |
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| 529 | } |
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| 530 | |
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| 531 | this.div.appendChild(this.layersDiv); |
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| 532 | |
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| 533 | if(this.roundedCorner) { |
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| 534 | OpenLayers.Rico.Corner.round(this.div, { |
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| 535 | corners: "tl bl", |
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| 536 | bgColor: "transparent", |
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| 537 | color: this.roundedCornerColor, |
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| 538 | blend: false |
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| 539 | }); |
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| 540 | OpenLayers.Rico.Corner.changeOpacity(this.layersDiv, 0.75); |
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| 541 | } |
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| 542 | |
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| 543 | var imgLocation = OpenLayers.Util.getImagesLocation(); |
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| 544 | var sz = new OpenLayers.Size(18,18); |
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| 545 | |
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| 546 | // maximize button div |
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| 547 | var img = imgLocation + 'layer-switcher-maximize.png'; |
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| 548 | this.maximizeDiv = OpenLayers.Util.createAlphaImageDiv( |
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| 549 | "OpenLayers_Control_MaximizeDiv", |
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| 550 | null, |
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| 551 | sz, |
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| 552 | img, |
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| 553 | "absolute"); |
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| 554 | OpenLayers.Element.addClass(this.maximizeDiv, "maximizeDiv"); |
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| 555 | this.maximizeDiv.style.display = "none"; |
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| 556 | OpenLayers.Event.observe(this.maximizeDiv, "click", |
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| 557 | OpenLayers.Function.bindAsEventListener(this.maximizeControl, this) |
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| 558 | ); |
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| 559 | |
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| 560 | this.div.appendChild(this.maximizeDiv); |
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| 561 | |
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| 562 | // minimize button div |
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| 563 | var img = imgLocation + 'layer-switcher-minimize.png'; |
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| 564 | var sz = new OpenLayers.Size(18,18); |
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| 565 | this.minimizeDiv = OpenLayers.Util.createAlphaImageDiv( |
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| 566 | "OpenLayers_Control_MinimizeDiv", |
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| 567 | null, |
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| 568 | sz, |
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| 569 | img, |
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| 570 | "absolute"); |
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| 571 | OpenLayers.Element.addClass(this.minimizeDiv, "minimizeDiv"); |
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| 572 | this.minimizeDiv.style.display = "none"; |
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| 573 | OpenLayers.Event.observe(this.minimizeDiv, "click", |
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| 574 | OpenLayers.Function.bindAsEventListener(this.minimizeControl, this) |
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| 575 | ); |
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| 576 | |
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| 577 | this.div.appendChild(this.minimizeDiv); |
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| 578 | }, |
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| 579 | |
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| 580 | /** |
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| 581 | * Method: ignoreEvent |
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| 582 | * |
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| 583 | * Parameters: |
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| 584 | * evt - {Event} |
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| 585 | */ |
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| 586 | ignoreEvent: function(evt) { |
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| 587 | OpenLayers.Event.stop(evt); |
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| 588 | }, |
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| 589 | |
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| 590 | /** |
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| 591 | * Method: mouseDown |
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| 592 | * Register a local 'mouseDown' flag so that we'll know whether or not |
---|
| 593 | * to ignore a mouseUp event |
---|
| 594 | * |
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| 595 | * Parameters: |
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| 596 | * evt - {Event} |
---|
| 597 | */ |
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| 598 | mouseDown: function(evt) { |
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| 599 | this.isMouseDown = true; |
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| 600 | this.ignoreEvent(evt); |
---|
| 601 | }, |
---|
| 602 | |
---|
| 603 | /** |
---|
| 604 | * Method: mouseUp |
---|
| 605 | * If the 'isMouseDown' flag has been set, that means that the drag was |
---|
| 606 | * started from within the LayerSwitcher control, and thus we can |
---|
| 607 | * ignore the mouseup. Otherwise, let the Event continue. |
---|
| 608 | * |
---|
| 609 | * Parameters: |
---|
| 610 | * evt - {Event} |
---|
| 611 | */ |
---|
| 612 | mouseUp: function(evt) { |
---|
| 613 | if (this.isMouseDown) { |
---|
| 614 | this.isMouseDown = false; |
---|
| 615 | this.ignoreEvent(evt); |
---|
| 616 | } |
---|
| 617 | }, |
---|
| 618 | |
---|
| 619 | CLASS_NAME: "OpenLayers.Control.LayerSwitcher" |
---|
| 620 | }); |
---|