I am creating an Umbraco solution, using grid layout in v 7.2. I need some custom elements, so my thought was to use macros and Property Editors. I need to figure out how to populate my Multi Node Tree Picker from my angular controller, any help is appreciated.

MultiNodeTreePickerEditor.controller.js

angular.module("umbraco").controller("MultiNodeTreePickerEditor.controller",
    function ($scope, assetsService, $http, dialogService, mediaHelper) {

        $scope.model.value = [];

        // fetch new items and insert them
        if ($scope.model.value.length === 0) {

        }
       
        // Remove an item from the Multi Node Tree Picker
        $scope.remove = function (item) {
            $scope.model.value.splice($scope.model.value.indexOf(item), 1);
        };

        // Render the Multi Node Tree Picker
        $scope.pickContent = function (slide) {
            dialogService.treePicker({
                multiPicker: true,
                section: "content",
                treeAlias: "content",
                callback: function (data) {
                    $scope.model.value = data.map(function (link) {
                        return { id: link.id, name: link.name };
                    });
                }
            });
        };

});

MultiNodeTreePickerEditor.html

<div ng-controller="MultiNodeTreePickerEditor.controller">
  
    <i class="icon icon-add blue"></i>
    <a href ng-click="pickContent(item)">link</a>

    <div ng-repeat="item in model.value">
        <a ng-click="remove(item)">
            <i class="icon icon-delete red"></i>
            {{item.name}}
            </a>
    </div>

</div>

package.manifest

{   
    propertyEditors: [      
        {
            alias: "MultiNodeTreePickerEditor",
            name: "Multi Node Tree Picker Editor",
			isParameterEditor: true,
			hideLabel: true,
            editor: {
                view: "~/App_Plugins/MultiNodeTreePicker/MultiNodeTreePickerEditor.html",
				valueType: "JSON"
            }
        }
    ]
    ,
    javascript: [
        '~/App_Plugins/MultiNodeTreePicker/MultiNodeTreePickerEditor.controller.js'
    ]
}

I started using another implementation, so I don't have to rely on macros at all. I did not get this work and I doubt there is a reasonable way to do it.