Adding jquery, flot and openlayers to be included with the GEM.v0.0.4

1 files changed, 240 insertions, 0 deletions

diff --git a/misc/openlayers/lib/OpenLayers/Control/UTFGrid.js b/misc/openlayers/lib/OpenLayers/Control/UTFGrid.js
new file mode 100644
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+++ b/misc/openlayers/lib/OpenLayers/Control/UTFGrid.js
@@ -0,0 +1,240 @@
+/* Copyright (c) 2006-2013 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/Handler/Hover.js
+ * @requires OpenLayers/Handler/Click.js
+ */
+
+/**
+ * Class: OpenLayers.Control.UTFGrid
+ *
+ * This Control provides behavior associated with UTFGrid Layers.
+ * These 'hit grids' provide underlying feature attributes without
+ * calling the server (again). This control allows Mousemove, Hovering 
+ * and Click events to trigger callbacks that use the attributes in 
+ * whatever way you need. 
+ *
+ * The most common example may be a UTFGrid layer containing feature
+ * attributes that are displayed in a div as you mouseover.
+ *
+ * Example Code:
+ *
+ * (start code)
+ * var world_utfgrid = new OpenLayers.Layer.UTFGrid( 
+ *     'UTFGrid Layer', 
+ *     "http://tiles/world_utfgrid/${z}/${x}/${y}.json"
+ * );
+ * map.addLayer(world_utfgrid);
+ * 
+ * var control = new OpenLayers.Control.UTFGrid({
+ *     layers: [world_utfgrid],
+ *     handlerMode: 'move',
+ *     callback: function(infoLookup) {
+ *         // do something with returned data
+ *
+ *     }
+ * })
+ * (end code)
+ *
+ *
+ * Inherits from:
+ *  - <OpenLayers.Control>
+ */
+OpenLayers.Control.UTFGrid = OpenLayers.Class(OpenLayers.Control, {
+    
+    /**
+     * APIProperty: autoActivate
+     * {Boolean} Activate the control when it is added to a map.  Default is
+     *     true.
+     */
+    autoActivate: true,
+
+    /** 
+     * APIProperty: Layers
+     * List of layers to consider. Must be Layer.UTFGrids
+     * `null` is the default indicating all UTFGrid Layers are queried.
+     * {Array} <OpenLayers.Layer.UTFGrid> 
+     */
+    layers: null,
+
+    /* Property: defaultHandlerOptions
+     * The default opts passed to the handler constructors
+     */
+    defaultHandlerOptions: {
+        'delay': 300,
+        'pixelTolerance': 4,
+        'stopMove': false,
+        'single': true,
+        'double': false,
+        'stopSingle': false,
+        'stopDouble': false
+    },
+
+    /* APIProperty: handlerMode
+     * Defaults to 'click'. Can be 'hover' or 'move'.
+     */
+    handlerMode: 'click',
+
+    /**
+     * APIMethod: setHandler
+     * sets this.handlerMode and calls resetHandler()
+     *
+     * Parameters:
+     * hm - {String} Handler Mode string; 'click', 'hover' or 'move'.
+     */
+    setHandler: function(hm) {
+        this.handlerMode = hm;
+        this.resetHandler();
+    },
+
+    /**
+     * Method: resetHandler
+     * Deactivates the old hanlder and creates a new
+     * <OpenLayers.Handler> based on the mode specified in
+     * this.handlerMode
+     *
+     */
+    resetHandler: function() {
+        if (this.handler) {
+            this.handler.deactivate();
+            this.handler.destroy();
+            this.handler = null;
+        }
+   
+        if (this.handlerMode == 'hover') {
+            // Handle this event on hover
+            this.handler = new OpenLayers.Handler.Hover(
+                this,
+                {'pause': this.handleEvent, 'move': this.reset},
+                this.handlerOptions
+            );
+        } else if (this.handlerMode == 'click') {
+            // Handle this event on click
+            this.handler = new OpenLayers.Handler.Click(
+                this, {
+                    'click': this.handleEvent
+                }, this.handlerOptions
+            );
+        } else if (this.handlerMode == 'move') {
+            this.handler = new OpenLayers.Handler.Hover(
+                this,
+                // Handle this event while hovering OR moving
+                {'pause': this.handleEvent, 'move': this.handleEvent},
+                this.handlerOptions
+            );
+        }
+        if (this.handler) {
+            return true;
+        } else {
+            return false;
+        }
+    },
+
+    /**
+     * Constructor: <OpenLayers.Control.UTFGrid>
+     *
+     * Parameters:
+     * options - {Object} 
+     */
+    initialize: function(options) {
+        options = options || {};
+        options.handlerOptions = options.handlerOptions || this.defaultHandlerOptions;
+        OpenLayers.Control.prototype.initialize.apply(this, [options]);
+        this.resetHandler();
+    }, 
+
+    /**
+     * Method: handleEvent
+     * Internal method called when specified event is triggered.
+     * 
+     * This method does several things:
+     *
+     * Gets the lonLat of the event.
+     *
+     * Loops through the appropriate hit grid layers and gathers the attributes.
+     *
+     * Passes the attributes to the callback
+     *
+     * Parameters:
+     * evt - {<OpenLayers.Event>} 
+     */
+    handleEvent: function(evt) {
+        if (evt == null) {
+            this.reset();
+            return;
+        }
+
+        var lonLat = this.map.getLonLatFromPixel(evt.xy);
+        if (!lonLat) { 
+            return;
+        }    
+        
+        var layers = this.findLayers();
+        if (layers.length > 0) {
+            var infoLookup = {};
+            var layer, idx;
+            for (var i=0, len=layers.length; i<len; i++) {
+                layer = layers[i];
+                idx = OpenLayers.Util.indexOf(this.map.layers, layer);
+                infoLookup[idx] = layer.getFeatureInfo(lonLat);
+            }
+            this.callback(infoLookup, lonLat, evt.xy);
+        }
+    },
+
+    /**
+     * APIMethod: callback
+     * Function to be called when a mouse event corresponds with a location that
+     *     includes data in one of the configured UTFGrid layers.
+     *
+     * Parameters:
+     * infoLookup - {Object} Keys of this object are layer indexes and can be
+     *     used to resolve a layer in the map.layers array.  The structure of
+     *     the property values depend on the data included in the underlying
+     *     UTFGrid and may be any valid JSON type.  
+     */
+    callback: function(infoLookup) {
+        // to be provided in the constructor
+    },
+
+    /**
+     * Method: reset
+     * Calls the callback with null.
+     */
+    reset: function(evt) {
+        this.callback(null);
+    },
+
+    /**
+     * Method: findLayers
+     * Internal method to get the layers, independent of whether we are
+     *     inspecting the map or using a client-provided array
+     *
+     * The default value of this.layers is null; this causes the 
+     * findLayers method to return ALL UTFGrid layers encountered.
+     *
+     * Parameters:
+     * None
+     *
+     * Returns:
+     * {Array} Layers to handle on each event
+     */
+    findLayers: function() {
+        var candidates = this.layers || this.map.layers;
+        var layers = [];
+        var layer;
+        for (var i=candidates.length-1; i>=0; --i) {
+            layer = candidates[i];
+            if (layer instanceof OpenLayers.Layer.UTFGrid ) { 
+                layers.push(layer);
+            }
+        }
+        return layers;
+    },
+
+    CLASS_NAME: "OpenLayers.Control.UTFGrid"
+});