3ca974acec
svn merge sandbox/vector-2.4/@2307 sandbox/vector-2.4/@HEAD trunk/openlayers/ git-svn-id: http://svn.openlayers.org/trunk/openlayers@2803 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
111 lines
3.3 KiB
JavaScript
111 lines
3.3 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under a modified BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
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* for the full text of the license. */
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/**
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* Handler for dragging a rectangle across the map. Drag is displayed
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* on mouse down, moves on mouse move, and is finished on mouse up.
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*
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* @class
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* @requires OpenLayers/Handler.js
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* @requires OpenLayers/Events.js
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*/
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OpenLayers.Handler.Drag = OpenLayers.Class.create();
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OpenLayers.Handler.Drag.prototype = OpenLayers.Class.inherit( OpenLayers.Handler, {
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/**
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* When a mousedown event is received, we want to record it, but not set
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* 'dragging' until the mouse moves after starting.
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*
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* @type boolean
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**/
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started: false,
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/** @type boolean **/
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dragging: null,
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/** @type OpenLayers.Pixel **/
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start: null,
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/**
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* @constructor
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*
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* @param {OpenLayers.Control} control
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* @param {Object} callbacks An object containing a single function to be
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* called when the drag operation is finished.
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* The callback should expect to recieve a single
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* argument, the point geometry.
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* @param {Object} options
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*/
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initialize: function(control, callbacks, options) {
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OpenLayers.Handler.prototype.initialize.apply(this, arguments);
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},
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mousedown: function (evt) {
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if (this.checkModifiers(evt) && OpenLayers.Event.isLeftClick(evt)) {
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this.started = true;
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this.dragging = null;
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this.start = evt.xy.clone();
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// TBD replace with CSS classes
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this.map.div.style.cursor = "move";
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this.callback("down", [evt.xy]);
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OpenLayers.Event.stop(evt);
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return false;
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}
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},
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mousemove: function (evt) {
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if (this.started) {
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this.dragging = true;
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this.callback("move", [evt.xy]);
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}
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},
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mouseup: function (evt) {
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if (this.started) {
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this.started = false;
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// TBD replace with CSS classes
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this.map.div.style.cursor = "default";
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this.callback("up", [evt.xy]);
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}
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},
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mouseout: function (evt) {
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if (this.started && OpenLayers.Util.mouseLeft(evt, this.map.div)) {
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this.started = false;
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this.dragging = null;
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// TBD replace with CSS classes
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this.map.div.style.cursor = "default";
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this.callback("out", []);
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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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* @type Boolean
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*/
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click: function (evt) {
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// throw away the first left click event that happens after a mouse up
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if (OpenLayers.Event.isLeftClick(evt) && this.dragging != null) {
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this.dragging = null;
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return false;
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}
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this.started = false;
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},
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activate: function (evt) {
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OpenLayers.Handler.prototype.activate.apply(this, arguments);
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document.onselectstart = function() { return false; };
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this.dragging = null;
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},
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deactivate: function (evt) {
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OpenLayers.Handler.prototype.deactivate.apply(this, arguments);
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document.onselectstart = null;
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this.dragging = null;
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Handler.Drag"
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});
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