Adding Zoom control.

Tests still missing.

lib/OpenLayers/Control/Zoom.js

@@ -1,138 +0,0 @@
-/* Copyright (c) 2006-2012 by OpenLayers Contributors (see authors.txt for 
- * full list of contributors). Published under the 2-clause BSD license.
- * See license.txt in the OpenLayers distribution or repository for the
- * full text of the license. */
-
-/**
- * @requires OpenLayers/Control.js
- * @requires OpenLayers/Events/buttonclick.js
- */
-
-/**
- * Class: OpenLayers.Control.Zoom
- * The Zoom control is a pair of +/- links for zooming in and out.
- *
- * Inherits from:
- *  - <OpenLayers.Control>
- */
-OpenLayers.Control.Zoom = OpenLayers.Class(OpenLayers.Control, {
-    
-    /**
-     * APIProperty: zoomInText
-     * {String}
-     * Text for zoom-in link.  Default is "+".
-     */
-    zoomInText: "+",
-
-    /**
-     * APIProperty: zoomInId
-     * {String}
-     * Instead of having the control create a zoom in link, you can provide 
-     *     the identifier for an anchor element already added to the document.
-     *     By default, an element with id "olZoomInLink" will be searched for
-     *     and used if it exists.
-     */
-    zoomInId: "olZoomInLink",
-
-    /**
-     * APIProperty: zoomOutText
-     * {String}
-     * Text for zoom-out link.  Default is "-".
-     */
-    zoomOutText: "-",
-
-    /**
-     * APIProperty: zoomOutId
-     * {String}
-     * Instead of having the control create a zoom out link, you can provide 
-     *     the identifier for an anchor element already added to the document.
-     *     By default, an element with id "olZoomOutLink" will be searched for
-     *     and used if it exists.
-     */
-    zoomOutId: "olZoomOutLink",
-
-    /**
-     * Method: draw
-     *
-     * Returns:
-     * {DOMElement} A reference to the DOMElement containing the zoom links.
-     */
-    draw: function() {
-        var div = OpenLayers.Control.prototype.draw.apply(this),
-            links = this.getOrCreateLinks(div),
-            zoomIn = links.zoomIn,
-            zoomOut = links.zoomOut,
-            eventsInstance = this.map.events;
-        
-        if (zoomOut.parentNode !== div) {
-            eventsInstance = this.events;
-            eventsInstance.attachToElement(zoomOut.parentNode);
-        }
-        eventsInstance.register("buttonclick", this, this.onZoomClick);
-        
-        this.zoomInLink = zoomIn;
-        this.zoomOutLink = zoomOut;
-        return div;
-    },
-    
-    /**
-     * Method: getOrCreateLinks
-     * 
-     * Parameters:
-     * el - {DOMElement}
-     *
-     * Return: 
-     * {Object} Object with zoomIn and zoomOut properties referencing links.
-     */
-    getOrCreateLinks: function(el) {
-        var zoomIn = document.getElementById(this.zoomInId),
-            zoomOut = document.getElementById(this.zoomOutId);
-        if (!zoomIn) {
-            zoomIn = document.createElement("a");
-            zoomIn.href = "#zoomIn";
-            zoomIn.appendChild(document.createTextNode(this.zoomInText));
-            zoomIn.className = "olControlZoomIn";
-            el.appendChild(zoomIn);
-        }
-        OpenLayers.Element.addClass(zoomIn, "olButton");
-        if (!zoomOut) {
-            zoomOut = document.createElement("a");
-            zoomOut.href = "#zoomOut";
-            zoomOut.appendChild(document.createTextNode(this.zoomOutText));
-            zoomOut.className = "olControlZoomOut";
-            el.appendChild(zoomOut);
-        }
-        OpenLayers.Element.addClass(zoomOut, "olButton");
-        return {
-            zoomIn: zoomIn, zoomOut: zoomOut
-        };
-    },
-    
-    /**
-     * Method: onZoomClick
-     * Called when zoomin/out link is clicked.
-     */
-    onZoomClick: function(evt) {
-        var button = evt.buttonElement;
-        if (button === this.zoomInLink) {
-            this.map.zoomIn();
-        } else if (button === this.zoomOutLink) {
-            this.map.zoomOut();
-        }
-    },
-
-    /** 
-     * Method: destroy
-     * Clean up.
-     */
-    destroy: function() {
-        if (this.map) {
-            this.map.events.unregister("buttonclick", this, this.onZoomClick);
-        }
-        delete this.zoomInLink;
-        delete this.zoomOutLink;
-        OpenLayers.Control.prototype.destroy.apply(this);
-    },
-
-    CLASS_NAME: "OpenLayers.Control.Zoom"
-});