added L.Control.Button

Author: jnmoore-intel

L.Control.Button.js

@@ -0,0 +1,79 @@
+// Author: Jerroyd Moore
+
+L.Control.Button = L.Control.extend({
+    includes: L.Mixin.Events,
+    options: {
+        position: 'topright',
+    },
+    initialize: function (label, options) {
+        L.setOptions(this, options);
+        var button = null;
+
+        if (label instanceof HTMLElement) {
+            button = label;
+            try {
+                button.parentNode.removeChild(button);
+            } catch (e) { }
+        } else if (typeof label === "string") {
+            button = L.DomUtil.create('button', this.options.className)
+        } else {
+            throw new Error('L.Control.Button: failed to initialize, label must either be text or a dom element');
+        }
+
+        L.DomUtil.addClass(button, this.options.position);
+
+        this._container = button;
+
+        return this;
+    },
+    isToggled: function () {
+        return L.DomUtil.hasClass(this._container, this.options.toggleButton);
+    },
+    _fireClick: function (e) {
+        this.fire('click');
+
+        if (this.options.toggleButton) {
+            var btn = this._container;
+            if (this.isToggled()) {
+                L.DomUtil.removeClass(this._container, this.options.toggleButton);
+            } else {
+                L.DomUtil.addClass(this._container, this.options.toggleButton);
+            }
+        }
+    },
+    onAdd: function (map) {
+        if (this._container) {
+            L.DomEvent.on(this._container, 'click', this._fireClick, this);
+            var stop = L.DomEvent.stopPropagation;
+            L.DomEvent.on(this._container, 'mousedown', stop)
+                      .on(this._container, 'touchstart', stop)
+                      .on(this._container, 'dblclick', stop)
+                      .on(this._container, 'mousewheel', stop)
+                      .on(this._container, 'MozMozMousePixelScroll', stop)
+            this.fire('load');
+
+            this._map = map;
+        }
+
+        return this._container;
+    },
+    onRemove: function (map) {
+        if (this._container && this._map) {
+            L.DomEvent.off(this._container, 'click', this._fireClick, this);
+            L.DomEvent.off(this._container, 'mousedown', stop)
+                      .off(this._container, 'touchstart', stop)
+                      .off(this._container, 'dblclick', stop)
+                      .off(this._container, 'mousewheel', stop)
+                      .off(this._container, 'MozMozMousePixelScroll', stop)
+
+            this.fire('unload');
+            this._map = null;
+        }
+
+        return this;
+    }
+});
+
+L.control.button = function (label, options) {
+    return new L.Control.Button(label, options);
+};