// GoToLocation.js
/// <reference assembly="System.Web.Extensions" name="MicrosoftAjax.js"/>

Type.registerNamespace('ADF.Samples');

// base object for gotolocation
ADF.Samples.goToLocationClass = function (element) {
    ADF.Samples.goToLocationClass.initializeBase(this,[element]);
    this._panel = null;
    this._displayX = null;
    this._displayY = null;
    this._panelID = null;
    this._initialPositionSet = false;
}

ADF.Samples.goToLocationClass.prototype = {
    initialize : function() {
        ADF.Samples.goToLocationClass.callBaseMethod(this, 'initialize');
        var id = this.get_id();
        this._displayX = $get(id + "_GoToLocationX");
        this._displayY = $get(id + "_GoToLocationY");
        if (this._panelID && this._panelID.length > 0)
            this._panel = $get(this._panelID);
        if (this._panel!=null)
            this._panel.style.zIndex = "10000";
        else if (this._map!=null) 
            this._map.add_extentChanged(Function.createDelegate(this, this._updateCoords));
        this._updateCoords();
    },

    get_map : function() {
        /// <value name="map" type="Object">Map control associated with the GoToLocation functionality</value>
		return this._map;
	},
	set_map : function(value) {
		this._map = value;
	},
    
    pan : function(zoom) {
	    /// <summary>
	    /// Pans to location, with option to zoom in.
	    /// </summary>
	    /// <param name="zoom" type="Boolean">Optional. If true, function will zoom in. Defaults to false./param>
        if (zoom==null) zoom = false;
        var m = this.get_map();
        var x = this._displayX.value;
        var y = this._displayY.value;
        var maxExtent = m.get_layers().get_extent();
        if (isNaN(x) || isNaN(y)) {
            alert("Both values must be numbers.");
        } else if (maxExtent.get_xmin()>x || maxExtent.get_xmax()<x || maxExtent.get_ymin()>y || maxExtent.get_ymax()<y) { 
            var blurb = "Coordinates are outside the extent of all map layers. Please enter a coordinate within these limits:\n";
            blurb += "Min X: " + maxExtent.get_xmin() + "\n";
            blurb += "Min Y: " + maxExtent.get_ymin() + "\n";
            blurb += "Max X: " + maxExtent.get_xmax() + "\n";
            blurb += "Max Y: " + maxExtent.get_ymax() + "\n";
            alert(blurb);
        } else {
            var point = new ESRI.ADF.Geometries.Point(parseFloat(this._displayX.value), parseFloat(this._displayY.value));
            if (zoom) {
		        var width =m.get_extent().get_width()*0.25;
		        var height =m.get_extent().get_height()*0.25;
		        var box = new ESRI.ADF.Geometries.Envelope(point.get_x()-width,point.get_y()-height, point.get_x()+width,point.get_y()+height);
		        m.zoomToBox(box);
            } else 
                m.panTo(point);
            if (this._panel != null)
            {
                var gtxydialog = $find(this._panel.id);
                gtxydialog.hide();
            }
       }  
    },
    
    get_panelID : function() {
        return this._panelID;
    },
    set_panelID : function(value) {
        this._panelID = value;
    },
    

    toggle : function() {
	    /// <summary>
	    /// Toggles visiblity of dialog
	    /// </summary>
	    this._updateCoords();
        if (this._panel!=null) {
            var gtxydialog = $find(this._panel.id);
            gtxydialog.toggleVisibility();
        }
    },
    
    _updateCoords : function() {
        var center = this.get_map().get_center();
        // get center coords of map to put into the xy textboxes
        this._displayX.value = Math.round(center.get_x() * 1000) / 1000;
        this._displayY.value = Math.round(center.get_y() * 1000) / 1000;
    }
    

}

ADF.Samples.goToLocationClass.registerClass('ADF.Samples.goToLocationClass', Sys.UI.Control);

if (typeof(Sys) !== "undefined") { Sys.Application.notifyScriptLoaded(); }