openlayers madness
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Steve Coast
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b95e9d2759
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b2b6892a45
54 changed files with 8021 additions and 10 deletions
172
public/lib/OpenLayers/Layer/Text.js
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172
public/lib/OpenLayers/Layer/Text.js
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/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
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* text of the license. */
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// @require: OpenLayers/Layer/Markers.js
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/**
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* @class
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*/
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OpenLayers.Layer.Text = Class.create();
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OpenLayers.Layer.Text.prototype =
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Object.extend( new OpenLayers.Layer.Markers(), {
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/** store url of text file
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* @type str */
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location:null,
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/** @type Array(OpenLayers.Feature) */
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features: null,
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/** @type OpenLayers.Feature */
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selectedFeature: null,
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/**
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* @constructor
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*
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* @param {String} name
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* @param {String} location
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*/
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initialize: function(name, location) {
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OpenLayers.Layer.Markers.prototype.initialize.apply(this, [name]);
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this.location = location;
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this.features = new Array();
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new Ajax.Request(location,
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{ method: 'get', onComplete:this.parseData.bind(this) } );
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},
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/**
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*
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*/
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destroy: function() {
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this.clearFeatures();
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this.features = null;
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OpenLayers.Layer.Markers.prototype.destroy.apply(this, arguments);
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},
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/** WFS layer is never a base class.
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* @type Boolean
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*/
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isBaseLayer: function() {
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return false;
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},
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/**
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* @param {?} ajaxRequest
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*/
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parseData: function(ajaxRequest) {
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var text = ajaxRequest.responseText;
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var lines = text.split('\n');
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var columns;
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// length - 1 to allow for trailing new line
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for (var lcv = 0; lcv < (lines.length - 1); lcv++) {
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var currLine = lines[lcv].replace(/^\s*/,'').replace(/\s*$/,'');
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if (currLine.charAt(0) != '#') { /* not a comment */
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if (!columns) {
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//First line is columns
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columns = currLine.split('\t');
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} else {
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var vals = currLine.split('\t');
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var location = new OpenLayers.LonLat(0,0);
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var title; var url;
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var icon, iconSize, iconOffset;
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var set = false;
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for (var valIndex = 0; valIndex < vals.length; valIndex++) {
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if (vals[valIndex]) {
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if (columns[valIndex] == 'point') {
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var coords = vals[valIndex].split(',');
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location.lat = parseFloat(coords[0]);
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location.lon = parseFloat(coords[1]);
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set = true;
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} else if (columns[valIndex] == 'lat') {
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location.lat = parseFloat(vals[valIndex]);
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set = true;
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} else if (columns[valIndex] == 'lon') {
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location.lon = parseFloat(vals[valIndex]);
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set = true;
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} else if (columns[valIndex] == 'title')
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title = vals[valIndex];
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else if (columns[valIndex] == 'image' ||
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columns[valIndex] == 'icon')
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url = vals[valIndex];
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else if (columns[valIndex] == 'iconSize') {
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var size = vals[valIndex].split(',');
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iconSize = new OpenLayers.Size(parseFloat(size[0]),
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parseFloat(size[1]));
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} else if (columns[valIndex] == 'iconOffset') {
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var offset = vals[valIndex].split(',');
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iconOffset = new OpenLayers.Pixel(parseFloat(offset[0]),
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parseFloat(offset[1]));
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} else if (columns[valIndex] == 'title') {
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title = vals[valIndex];
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} else if (columns[valIndex] == 'description') {
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description = vals[valIndex];
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}
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}
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}
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if (set) {
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var data = new Object();
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if (url != null) {
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data.icon = new OpenLayers.Icon(url,
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iconSize,
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iconOffset);
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} else {
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data.icon = OpenLayers.Marker.defaultIcon();
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//allows for the case where the image url is not
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// specified but the size is. use a default icon
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// but change the size
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if (iconSize != null) {
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data.icon.setSize(iconSize);
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}
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}
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if ((title != null) && (description != null)) {
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data['popupContentHTML'] = '<h2>'+title+'</h2><p>'+description+'</p>';
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}
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var feature = new OpenLayers.Feature(this, location, data);
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this.features.append(feature);
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var marker = feature.createMarker();
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marker.events.register('click', feature, this.markerClick);
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this.addMarker(marker);
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}
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}
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}
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}
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},
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/**
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* @param {Event} evt
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*/
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markerClick: function(evt) {
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sameMarkerClicked = (this == this.layer.selectedFeature);
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this.layer.selectedFeature = (!sameMarkerClicked) ? this : null;
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for(var i=0; i < this.layer.map.popups.length; i++) {
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this.layer.map.removePopup(this.layer.map.popups[i]);
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}
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if (!sameMarkerClicked) {
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this.layer.map.addPopup(this.createPopup());
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}
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Event.stop(evt);
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},
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/**
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*
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*/
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clearFeatures: function() {
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if (this.features != null) {
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while(this.features.length > 0) {
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var feature = this.features[0];
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this.features.remove(feature);
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feature.destroy();
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}
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}
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Text"
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});
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