tree-grid-directive

A grid to display data in tree structure by using Angular and Bootstrap.

It's open source (MIT license)

Feel free to whatever you want to do with it.

Demo:: http://khan4019.github.io/tree-grid-directive/test/treeGrid.html

Mininum to start

---

Include src/treeGrid.css and src/tree-grid-directive.js in your HTML file after Bootstrap and Angular. Just add the following

  <tree-grid tree-data="tree_data"></tree-grid>

Then include the module as a dependency in your application:

angular.module('myApp', ['treeGrid'])

tree_data: is an array of objects. If object has child put them in children array of the object. an example of tree-data will look like:

 $scope.tree_data = [
     {Name:"USA",Area:9826675,Population:318212000,TimeZone:"UTC -5 to -10",
      children:[
		{Name:"California", Area:423970,Population:38340000,TimeZone:"Pacific Time",
			children:[
				{Name:"San Francisco", Area:231,Population:837442,TimeZone:"PST"},
				{Name:"Los Angeles", Area:503,Population:3904657,TimeZone:"PST"}
			]
		},
		{Name:"Illinois", Area:57914,Population:12882135,TimeZone:"Central Time Zone",
			children:[
				{Name:"Chicago", Area:234,Population:2695598,TimeZone:"CST"}
			]
		}
	]
  },	
  {Name:"Texas",Area:268581,Population:26448193,TimeZone:"Mountain"}
  ];

if you have an array sorted by primary key and parent Key, you can use the getTree method inside the temp folder.

More Options

---

If you want more customization, you can use the following options:

<tree-grid 
    tree-data     = "tree_data"
    col-defs      = "col_defs"
    expand-on     = "expanding_property"
    tree-control  = "my_tree"
    icon-leaf     = "icon-file"
    icon-expand   = "icon-plus-sign"
    icon-collapse = "icon-minus-sign"
    on-select     = "my_tree_handler(branch)"
    on-click      = "my_tree_handler(branch)"
    template-url  = "path/to/treegrid/template.html"
    expand-level  = "2">
</tree-grid>

col_defs: is an array of objects that allows you to customized column header. If displayName is not provided, field (object property) is used as displayName.

Valid properties are:

field:              Hook to the field to know the column position in the table.
displayName:        Text that will be used in the column header.
cellTemplate:       Template that will be used to show the value. Useful if
                    you want to show images, for instance.
cellTemplateScope:  Used to pass the controllers methods you want to be
                    used inside the cell template.
sortable:  			The user can sort by the values of this field	
sortingType: 		The type of the field, for sorting or filtering purposes.
					Possible values are "number", for numeric sorting, or
					"string" for alphabetic sorting (this is the default)
filterable:			This field will be searched when filtering

Example:

 $scope.col_defs = [
  {  field: "Description" },
  {
    field: "DemographicId",
    displayName: "Demographic Id",
	sortable : true,
	filterable : true
  },
  {
    field: "ParentId",
    displayName: "Parent Id"
  },
  { field: "Area",
    sortable : true,
	sortingType : "number",
	filterable : true
  },
  { field: "Population" },
  {
    field: "image",
    displayName: "Image",
    cellTemplate: "<img ng-click='cellTemplateScope.click(\'example\')' ng-src='{{ row.branch[col.field] }}' />",
    cellTemplateScope: {
        click: function(data) {         // this works too: $scope.someMethod;
            console.log(data);
        }
    }
  }
];

expanding_property: this is the property of the objects in tree_data where you want to put the ability to expand and collapse. This accepts an array of the same format as col_defs, allowing for sorting & filtering on the expanding field.

my_tree: you can use tree-control to use expand all and collapse all. Check it out in the link provided for demo.

icons: define Font Awesome, Bootstrap Glyphicon for expand, collapse and leaf.

template-url: URL for the custom template to be used.

expand-level: depth of the tree, you want to expand while loading.

on-select: a click handler while you are clicking on +/- icons.

    $scope.my_tree_handler = function(branch){
     	console.log('you clicked on', branch)
    }

on-click: a click handler while you are clicking on the expanding property, useful when you need to redirect if a branch is selected.

    $scope.my_tree_handler = function(branch){
        console.log('you clicked on', branch)
    }

Specifying the template

There are two ways to specify the template of the pagination controls directive:

1. Use the `treegridTemplateProvider in your app's config block to set a global template for your app:

   myApp.config(function(treegridTemplateProvider) {
       treegridTemplateProvider.setPath('path/to/treegrid/template.html');
   });
   

2. Use the template-url attribute on each treegrid directive to override a specific instance:

   <tree-grid tree-data="treegrid" col-defs="col_defs" template-url="path/to/treegrid/template.html"></tree-grid>
   

Loading the tree data from a REST API (or some external resource).

First, set the tree_data to an empty array:

$scope.tree_data = [];

Later, execute the query using promises and update the tree_data value with the resolved objects:

APIEndpoint
	.find()
	.then(function(objects){
		$scope.tree_data = prepareDataForTreegrid(objects);
	});

Custom cell templates

If for any reason you want to use a custom HTML to show a specific cell, for showing an image, colorpicker, or something else, you can use the cellTemplate option in the col-defs array, just use {{ row.branch[col.field] }} as the placeholder for the value of the cell anywhere in the HTML.

Example:

$scope.col_defs = [
  {
    field: "DemographicId",
    displayName: "Demographic Id",
    cellTemplate: "<img ng-src="{{ row.branch[col.field] }}" />"
  }
];

You can use whatever HTML you want, and all Angular directives will work as expected.

Also, if you need to use some method or variable from your scope in the cell template, you can pass the reference to cellTemplate as:

cellTemplateScope: {
    click: function(data) {         // this works too: $scope.someMethod;
        console.log(data);
    }
}

and then use it in cellTemplate as:

cellTemplate: "<img ng-click="cellTemplateScope.click(row.branch[col.field])" ng-src="{{ row.branch[col.field] }}" />",

and will work as expected.

Inspired by abn tree