Software: Apache. PHP/5.5.15 uname -a: Windows NT SVR-DMZ 6.1 build 7600 (Windows Server 2008 R2 Enterprise Edition) i586 SYSTEM Safe-mode: OFF (not secure) E:\nuevo\phpMyAdmin2\js\openlayers\src\openlayers\lib\OpenLayers\Control\ drwxrwxrwx |
Viewing file: WMTSGetFeatureInfo.js (13.71 KB) -rw-rw-rw- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for * full list of contributors). Published under the Clear BSD license. * See http://svn.openlayers.org/trunk/openlayers/license.txt for the * full text of the license. */ /** * @requires OpenLayers/Control.js * @requires OpenLayers/Handler/Click.js * @requires OpenLayers/Handler/Hover.js * @requires OpenLayers/Request.js * @requires OpenLayers/Format/WMSGetFeatureInfo.js */ /** * Class: OpenLayers.Control.WMTSGetFeatureInfo * The WMTSGetFeatureInfo control uses a WMTS query to get information about a * point on the map. The information may be in a display-friendly format * such as HTML, or a machine-friendly format such as GML, depending on the * server's capabilities and the client's configuration. This control * handles click or hover events, attempts to parse the results using an * OpenLayers.Format, and fires a 'getfeatureinfo' event for each layer * queried. * * Inherits from: * - <OpenLayers.Control> */ OpenLayers.Control.WMTSGetFeatureInfo = OpenLayers.Class(OpenLayers.Control, { /** * APIProperty: hover * {Boolean} Send GetFeatureInfo requests when mouse stops moving. * Default is false. */ hover: false, /** * Property: requestEncoding * {String} One of "KVP" or "REST". Only KVP encoding is supported at this * time. */ requestEncoding: "KVP", /** * APIProperty: drillDown * {Boolean} Drill down over all WMTS layers in the map. When * using drillDown mode, hover is not possible. A getfeatureinfo event * will be fired for each layer queried. */ drillDown: false, /** * APIProperty: maxFeatures * {Integer} Maximum number of features to return from a WMTS query. This * sets the feature_count parameter on WMTS GetFeatureInfo * requests. */ maxFeatures: 10, /** APIProperty: clickCallback * {String} The click callback to register in the * {<OpenLayers.Handler.Click>} object created when the hover * option is set to false. Default is "click". */ clickCallback: "click", /** * Property: layers * {Array(<OpenLayers.Layer.WMTS>)} The layers to query for feature info. * If omitted, all map WMTS layers will be considered. */ layers: null, /** * APIProperty: queryVisible * {Boolean} Filter out hidden layers when searching the map for layers to * query. Default is true. */ queryVisible: true, /** * Property: infoFormat * {String} The mimetype to request from the server */ infoFormat: 'text/html', /** * Property: vendorParams * {Object} Additional parameters that will be added to the request, for * WMTS implementations that support them. This could e.g. look like * (start code) * { * radius: 5 * } * (end) */ vendorParams: {}, /** * Property: format * {<OpenLayers.Format>} A format for parsing GetFeatureInfo responses. * Default is <OpenLayers.Format.WMSGetFeatureInfo>. */ format: null, /** * Property: formatOptions * {Object} Optional properties to set on the format (if one is not provided * in the <format> property. */ formatOptions: null, /** * APIProperty: handlerOptions * {Object} Additional options for the handlers used by this control, e.g. * (start code) * { * "click": {delay: 100}, * "hover": {delay: 300} * } * (end) */ handlerOptions: null, /** * Property: handler * {Object} Reference to the <OpenLayers.Handler> for this control */ handler: null, /** * Property: hoverRequest * {<OpenLayers.Request>} contains the currently running hover request * (if any). */ hoverRequest: null, /** * Constant: EVENT_TYPES * * Supported event types (in addition to those from <OpenLayers.Control>): * beforegetfeatureinfo - Triggered before each request is sent. * The event object has an *xy* property with the position of the * mouse click or hover event that triggers the request and a *layer* * property referencing the layer about to be queried. If a listener * returns false, the request will not be issued. * getfeatureinfo - Triggered when a GetFeatureInfo response is received. * The event object has a *text* property with the body of the * response (String), a *features* property with an array of the * parsed features, an *xy* property with the position of the mouse * click or hover event that triggered the request, a *layer* property * referencing the layer queried and a *request* property with the * request itself. If drillDown is set to true, one event will be fired * for each layer queried. * exception - Triggered when a GetFeatureInfo request fails (with a * status other than 200) or whenparsing fails. Listeners will receive * an event with *request*, *xy*, and *layer* properties. In the case * of a parsing error, the event will also contain an *error* property. */ EVENT_TYPES: ["beforegetfeatureinfo", "getfeatureinfo", "exception"], /** * Property: pending * {Number} The number of pending requests. */ pending: 0, /** * Constructor: <OpenLayers.Control.WMTSGetFeatureInfo> * * Parameters: * options - {Object} */ initialize: function(options) { // concatenate events specific to vector with those from the base this.EVENT_TYPES = OpenLayers.Control.WMTSGetFeatureInfo.prototype.EVENT_TYPES.concat( OpenLayers.Control.prototype.EVENT_TYPES ); options = options || {}; options.handlerOptions = options.handlerOptions || {}; OpenLayers.Control.prototype.initialize.apply(this, [options]); if (!this.format) { this.format = new OpenLayers.Format.WMSGetFeatureInfo( options.formatOptions ); } if (this.drillDown === true) { this.hover = false; } if (this.hover) { this.handler = new OpenLayers.Handler.Hover( this, { move: this.cancelHover, pause: this.getInfoForHover }, OpenLayers.Util.extend( this.handlerOptions.hover || {}, {delay: 250} ) ); } else { var callbacks = {}; callbacks[this.clickCallback] = this.getInfoForClick; this.handler = new OpenLayers.Handler.Click( this, callbacks, this.handlerOptions.click || {} ); } }, /** * Method: activate * Activates the control. * * Returns: * {Boolean} The control was effectively activated. */ activate: function () { if (!this.active) { this.handler.activate(); } return OpenLayers.Control.prototype.activate.apply( this, arguments ); }, /** * Method: deactivate * Deactivates the control. * * Returns: * {Boolean} The control was effectively deactivated. */ deactivate: function () { return OpenLayers.Control.prototype.deactivate.apply( this, arguments ); }, /** * Method: getInfoForClick * Called on click * * Parameters: * evt - {<OpenLayers.Event>} */ getInfoForClick: function(evt) { this.request(evt.xy, {}); }, /** * Method: getInfoForHover * Pause callback for the hover handler * * Parameters: * evt - {Object} */ getInfoForHover: function(evt) { this.request(evt.xy, {hover: true}); }, /** * Method: cancelHover * Cancel callback for the hover handler */ cancelHover: function() { if (this.hoverRequest) { --this.pending; if (this.pending <= 0) { OpenLayers.Element.removeClass(this.map.viewPortDiv, "olCursorWait"); this.pending = 0; } this.hoverRequest.abort(); this.hoverRequest = null; } }, /** * Method: findLayers * Internal method to get the layers, independent of whether we are * inspecting the map or using a client-provided array */ findLayers: function() { var candidates = this.layers || this.map.layers; var layers = []; var layer; for (var i=candidates.length-1; i>=0; --i) { layer = candidates[i]; if (layer instanceof OpenLayers.Layer.WMTS && layer.requestEncoding === this.requestEncoding && (!this.queryVisible || layer.getVisibility())) { layers.push(layer); if (!this.drillDown || this.hover) { break; } } } return layers; }, /** * Method: buildRequestOptions * Build an object with the relevant options for the GetFeatureInfo request. * * Parameters: * layer - {<OpenLayers.Layer.WMTS>} A WMTS layer. * xy - {<OpenLayers.Pixel>} The position on the map where the * mouse event occurred. */ buildRequestOptions: function(layer, xy) { var loc = this.map.getLonLatFromPixel(xy); var getTileUrl = layer.getURL( new OpenLayers.Bounds(loc.lon, loc.lat, loc.lon, loc.lat) ); var params = OpenLayers.Util.getParameters(getTileUrl); var tileInfo = layer.getTileInfo(loc); OpenLayers.Util.extend(params, { service: "WMTS", version: layer.version, request: "GetFeatureInfo", infoFormat: this.infoFormat, i: tileInfo.i, j: tileInfo.j }); OpenLayers.Util.applyDefaults(params, this.vendorParams); return { url: layer.url instanceof Array ? layer.url[0] : layer.url, params: OpenLayers.Util.upperCaseObject(params), callback: function(request) { this.handleResponse(xy, request, layer); }, scope: this }; }, /** * Method: request * Sends a GetFeatureInfo request to the WMTS * * Parameters: * xy - {<OpenLayers.Pixel>} The position on the map where the mouse event * occurred. * options - {Object} additional options for this method. * * Valid options: * - *hover* {Boolean} true if we do the request for the hover handler */ request: function(xy, options) { options = options || {}; var layers = this.findLayers(); if (layers.length > 0) { var issue, layer; for (var i=0, len=layers.length; i<len; i++) { layer = layers[i]; issue = this.events.triggerEvent("beforegetfeatureinfo", { xy: xy, layer: layer }); if (issue !== false) { ++this.pending; var requestOptions = this.buildRequestOptions(layer, xy); var request = OpenLayers.Request.GET(requestOptions); if (options.hover === true) { this.hoverRequest = request; } } } if (this.pending > 0) { OpenLayers.Element.addClass(this.map.viewPortDiv, "olCursorWait"); } } }, /** * Method: handleResponse * Handler for the GetFeatureInfo response. * * Parameters: * xy - {<OpenLayers.Pixel>} The position on the map where the mouse event * occurred. * request - {XMLHttpRequest} The request object. * layer - {<OpenLayers.Layer.WMTS>} The queried layer. */ handleResponse: function(xy, request, layer) { --this.pending; if (this.pending <= 0) { OpenLayers.Element.removeClass(this.map.viewPortDiv, "olCursorWait"); this.pending = 0; } if (request.status && (request.status < 200 || request.status >= 300)) { this.events.triggerEvent("exception", { xy: xy, request: request, layer: layer }); } else { var doc = request.responseXML; if (!doc || !doc.documentElement) { doc = request.responseText; } var features, except; try { features = this.format.read(doc); } catch (error) { except = true; this.events.triggerEvent("exception", { xy: xy, request: request, error: error, layer: layer }); } if (!except) { this.events.triggerEvent("getfeatureinfo", { text: request.responseText, features: features, request: request, xy: xy, layer: layer }); } } }, /** * Method: setMap * Set the map property for the control. * * Parameters: * map - {<OpenLayers.Map>} */ setMap: function(map) { this.handler.setMap(map); OpenLayers.Control.prototype.setMap.apply(this, arguments); }, CLASS_NAME: "OpenLayers.Control.WMTSGetFeatureInfo" }); |
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