| /* 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/Layer/WMS.js | |
| * @requires OpenLayers/Tile/Image/IFrame.js | |
| */ | |
| /** | |
| * Class: OpenLayers.Layer.WMS.Post | |
| * Instances of OpenLayers.Layer.WMS.Post are used to retrieve data from OGC | |
| * Web Mapping Services via HTTP-POST (application/x-www-form-urlencoded). | |
| * Create a new WMS layer with the <OpenLayers.Layer.WMS.Post> constructor. | |
| * | |
| * Inherits from: | |
| * - <OpenLayers.Layer.WMS> | |
| */ | |
| OpenLayers.Layer.WMS.Post = OpenLayers.Class(OpenLayers.Layer.WMS, { | |
| /** | |
| * Property: tileClass | |
| * {Object} Class, used to create tiles. | |
| */ | |
| tileClass: null, | |
| /** | |
| * APIProperty: unsupportedBrowsers | |
| * {Array} Array with browsers, which should use the HTTP-GET protocol | |
| * instead of HTTP-POST for fetching tiles from a WMS . | |
| * Defaults to ["mozilla", "firefox", "opera"], because Opera is not able | |
| * to show transparent images in IFrames and Firefox/Mozilla has some ugly | |
| * effects of viewport-shaking when panning the map. Both browsers, Opera | |
| * and Firefox/Mozilla, have no problem with long urls, which is the reason | |
| * for using POST instead of GET. The strings to pass to this array are | |
| * the ones returned by <OpenLayers.Util.getBrowserName()>. | |
| */ | |
| unsupportedBrowsers: ["mozilla", "firefox", "opera"], | |
| /** | |
| * Property: SUPPORTED_TRANSITIONS | |
| * {Array} | |
| * no supported transitions for this type of layer, because it is not | |
| * possible to modify the initialized tiles (iframes) | |
| */ | |
| SUPPORTED_TRANSITIONS: [], | |
| /** | |
| * Constructor: OpenLayers.Layer.WMS.Post | |
| * Creates a new WMS layer object. | |
| * | |
| * Example: | |
| * (code) | |
| * var wms = new OpenLayers.Layer.WMS.Post( | |
| * "NASA Global Mosaic", | |
| * "http://wms.jpl.nasa.gov/wms.cgi", | |
| * {layers: "modis, global_mosaic"}); | |
| * (end) | |
| * | |
| * Parameters: | |
| * name - {String} A name for the layer | |
| * url - {String} Base url for the WMS | |
| * (e.g. http://wms.jpl.nasa.gov/wms.cgi) | |
| * params - {Object} An object with key/value pairs representing the | |
| * GetMap query string parameters and parameter values. | |
| * options - {Object} Hashtable of extra options to tag onto the layer. | |
| */ | |
| initialize: function(name, url, params, options) { | |
| var newArguments = []; | |
| newArguments.push(name, url, params, options); | |
| OpenLayers.Layer.WMS.prototype.initialize.apply(this, newArguments); | |
| this.tileClass = OpenLayers.Util.indexOf( | |
| this.unsupportedBrowsers, OpenLayers.Util.getBrowserName()) != -1 | |
| ? OpenLayers.Tile.Image | |
| : OpenLayers.Tile.Image.IFrame; | |
| }, | |
| /** | |
| * Method: addTile | |
| * addTile creates a tile, initializes it and adds it as iframe to the | |
| * layer div. | |
| * | |
| * Parameters: | |
| * bounds - {<OpenLayers.Bounds>} | |
| * position - {<OpenLayers.Pixel>} | |
| * | |
| * Returns: | |
| * {<OpenLayers.Tile.Image.IFrame>} The added OpenLayers.Tile.Image.IFrame | |
| */ | |
| addTile: function(bounds,position) { | |
| return new this.tileClass( | |
| this, position, bounds, null, this.tileSize); | |
| }, | |
| CLASS_NAME: 'OpenLayers.Layer.WMS.Post' | |
| }); | |