fix open file using drag and drop

src/tools/open_file_tool.js

@@ -8,6 +8,8 @@ morpheus.OpenFileTool.prototype = {
 	gui : function() {
 		var array = [ {
 			name : 'open_file_action',
+			value : 'open',
+			type : 'bootstrap-select',
 			options : [ {
 				name : 'Annotate columns',
 				value : 'Annotate Columns'
@@ -33,10 +35,10 @@ morpheus.OpenFileTool.prototype = {
 			}, {
 				name : 'Open dendrogram',
 				value : 'Open dendrogram'
-			} ],
-			value : 'open',
-			type : 'bootstrap-select'
-		}, {
+			} ]
+		} ];
+		if (this.options.file == null) {
+			array.push({
 				name : 'file',
 				showLabel : false,
 				placeholder : 'Open your own file',
@@ -44,9 +46,10 @@ morpheus.OpenFileTool.prototype = {
 				type : 'file',
 				required : true,
 				help : morpheus.DatasetUtil.DATASET_FILE_FORMATS
-		} ];
+			});
+		}
 		array.options = {
-			ok : false,
+			ok : this.options.file != null,
 			size : 'modal-lg'
 		};
 		return array;
@@ -68,13 +71,16 @@ morpheus.OpenFileTool.prototype = {
 								morpheus.DatasetUtil.ANNOTATION_FILE_FORMATS);
 					}
 				});
+		if (this.options.file == null) {
 			$('<h4>Use your own file</h4>').insertAfter(
 					form.$form.find('.form-group:first'));
 			var _this = this;
 			var id = _.uniqueId('morpheus');
-		form.$form.append('<h4><a role="button" data-toggle="collapse" href="#'
-				+ id + '" aria-expanded="false" aria-controls="' + id
-				+ '">Or select a preloaded dataset</a></h4>');
+			form.$form
+					.append('<h4><a role="button" data-toggle="collapse" href="#'
+							+ id
+							+ '" aria-expanded="false" aria-controls="'
+							+ id + '">Or select a preloaded dataset</a></h4>');
 			var $sampleDatasets = $('<div class="collapse" id="' + id
 					+ '" style="overflow:auto;"></div>');
 			form.$form.append($sampleDatasets);
@@ -86,6 +92,7 @@ morpheus.OpenFileTool.prototype = {
 
 				}
 			});
+		}
 		form.on('change', function(e) {
 			var value = e.value;
 			if (value !== '' && value != null) {