| /* 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 | |
| */ | |
| /** | |
| * Class: OpenLayers.Control.Pan | |
| * The Pan control is a single button to pan the map in one direction. For | |
| * a more complete control see <OpenLayers.Control.PanPanel>. | |
| * | |
| * Inherits from: | |
| * - <OpenLayers.Control> | |
| */ | |
| OpenLayers.Control.Pan = OpenLayers.Class(OpenLayers.Control, { | |
| /** | |
| * APIProperty: slideFactor | |
| * {Integer} Number of pixels by which we'll pan the map in any direction | |
| * on clicking the arrow buttons, defaults to 50. | |
| */ | |
| slideFactor: 50, | |
| /** | |
| * Property: direction | |
| * {String} in {'North', 'South', 'East', 'West'} | |
| */ | |
| direction: null, | |
| /** | |
| * Property: type | |
| * {String} The type of <OpenLayers.Control> -- When added to a | |
| * <Control.Panel>, 'type' is used by the panel to determine how to | |
| * handle our events. | |
| */ | |
| type: OpenLayers.Control.TYPE_BUTTON, | |
| /** | |
| * Constructor: OpenLayers.Control.Pan | |
| * Control which handles the panning (in any of the cardinal directions) | |
| * of the map by a set px distance. | |
| * | |
| * Parameters: | |
| * direction - {String} The direction this button should pan. | |
| * options - {Object} An optional object whose properties will be used | |
| * to extend the control. | |
| */ | |
| initialize: function(direction, options) { | |
| this.direction = direction; | |
| this.CLASS_NAME += this.direction; | |
| OpenLayers.Control.prototype.initialize.apply(this, [options]); | |
| }, | |
| /** | |
| * Method: trigger | |
| */ | |
| trigger: function(){ | |
| switch (this.direction) { | |
| case OpenLayers.Control.Pan.NORTH: | |
| this.map.pan(0, -this.slideFactor); | |
| break; | |
| case OpenLayers.Control.Pan.SOUTH: | |
| this.map.pan(0, this.slideFactor); | |
| break; | |
| case OpenLayers.Control.Pan.WEST: | |
| this.map.pan(-this.slideFactor, 0); | |
| break; | |
| case OpenLayers.Control.Pan.EAST: | |
| this.map.pan(this.slideFactor, 0); | |
| break; | |
| } | |
| }, | |
| CLASS_NAME: "OpenLayers.Control.Pan" | |
| }); | |
| OpenLayers.Control.Pan.NORTH = "North"; | |
| OpenLayers.Control.Pan.SOUTH = "South"; | |
| OpenLayers.Control.Pan.EAST = "East"; | |
| OpenLayers.Control.Pan.WEST = "West"; | |