Bootstrap Tree View

---

A simple and elegant solution to displaying hierarchical tree structures (i.e. a Tree View) while leveraging the best that Twitter Bootstrap has to offer.

Dependencies

Where provided these are the actual versions bootstrap-treeview has been tested against.

• Bootstrap v3.3.4 (>= 3.0.0)
• jQuery v2.1.3 (>= 1.9.0)

Getting Started

Install

You can install using bower (recommended):

$ bower install bootstrap-treeview

or using npm:

$ npm install bootstrap-treeview

or download manually.

Usage

Add the following resources for the bootstrap-treeview to function correctly.

<!-- Required Stylesheets -->
<link href="bootstrap.css" rel="stylesheet">

<!-- Required Javascript -->
<script src="jquery.js"></script>
<script src="bootstrap-treeview.js"></script>

The component will bind to any existing DOM element.

<div id="tree"></div>

Basic usage may look something like this.

function getTree() {
  // Some logic to retrieve, or generate tree structure
  return data;
}

$('#tree').treeview({data: getTree()});

Data Structure

In order to define the hierarchical structure needed for the tree it's necessary to provide a nested array of JavaScript objects.

Example

var tree = [
  {
    text: "Parent 1",
    nodes: [
      {
        text: "Child 1",
        nodes: [
          {
            text: "Grandchild 1"
          },
          {
            text: "Grandchild 2"
          }
        ]
      },
      {
        text: "Child 2"
      }
    ]
  },
  {
    text: "Parent 2"
  },
  {
    text: "Parent 3"
  },
  {
    text: "Parent 4"
  },
  {
    text: "Parent 5"
  }
];

At the lowest level a tree node is a represented as a simple JavaScript object. This one required property text will build you a tree.

{
  text: "Node 1"
}

If you want to do more, here's the full node specification

{
  text: "Node 1",
  icon: "glyphicon glyphicon-stop",
  color: "#000000",
  backColor: "#FFFFFF",
  href: "#node-1",
  selectable: true,
  state: {
  	expanded: true,
  	selected: true
  },
  tags: ['available'],
  nodes: [
    {},
    ...
  ]
}

Node Properties

The following properties are defined to allow node level overrides, such as node specific icons, colours and tags.

text

String Mandatory

The text value displayed for a given tree node, typically to the right of the nodes icon.

icon

String Optional

The icon displayed on a given node, typically to the left of the text.

For simplicity we directly leverage Bootstraps Glyphicons support and as such you should provide both the base class and individual icon class separated by a space.

By providing the base class you retain full control over the icons used. If you want to use your own then just add your class to this icon field.

color

String Optional

The foreground color used on a given node, overrides global color option.

backColor

String Optional

The background color used on a given node, overrides global color option.

href

String Optional

Used in conjunction with global enableLinks option to specify anchor tag URL on a given node.

selectable

Boolean Default: true

Whether or not a node is selectable in the tree. False indicates the node should act as an expansion heading and will not fire selection events.

state

Object Optional

Describes a node's initial state.

state.expanded

Boolean Default: false

Whether or not a node is expanded i.e. open. Takes precedence over global option levels.

state.selected

Boolean Default: false

Whether or not a node is selected.

tags

Array of Strings Optional

Used in conjunction with global showTags option to add additional information to the right of each node; using Bootstrap Badges

Extendible

You can extend the node object by adding any number of additional key value pairs that you require for your application. Remember this is the object which will be passed around during selection events.

Options

Options allow you to customise the treeview's default appearance and behaviour. They are passed to the plugin on initialization, as an object.

// Example: initializing the treeview
// expanded to 5 levels
// with a background color of green
$('#tree').treeview({
  data: data,         // data is not optional
  levels: 5,
  backColor: 'green'
});

You can pass a new options object to the treeview at any time but this will have the effect of re-initializing the treeview.

List of Options

The following is a list of all available options.

data

Array of Objects. No default, expects data

This is the core data to be displayed by the tree view.

backColor

String, any legal color value. Default: inherits from Bootstrap.css.

Sets the default background color used by all nodes, except when overridden on a per node basis in data.

borderColor

String, any legal color value. Default: inherits from Bootstrap.css.

Sets the border color for the component; set showBorder to false if you don't want a visible border.

collapseIcon

String, class name(s). Default: "glyphicon glyphicon-minus" as defined by Bootstrap Glyphicons

Sets the icon to be used on a collapsible tree node.

color

String, any legal color value. Default: inherits from Bootstrap.css.

Sets the default foreground color used by all nodes, except when overridden on a per node basis in data.

emptyIcon

String, class name(s). Default: "glyphicon" as defined by Bootstrap Glyphicons

Sets the icon to be used on a tree node with no child nodes.

enableLinks

Boolean. Default: false

Whether or not to present node text as a hyperlink. The href value of which must be provided in the data structure on a per node basis.

expandIcon

String, class name(s). Default: "glyphicon glyphicon-plus" as defined by Bootstrap Glyphicons

Sets the icon to be used on an expandable tree node.

highlightSearchResults

Boolean. Default: true

Whether or not to highlight search results.

highlightSelected

Boolean. Default: true

Whether or not to highlight the selected node.

levels

Integer. Default: 2

Sets the number of hierarchical levels deep the tree will be expanded to by default.

multiSelect

Boolean. Default: false

Whether or not multiple nodes can be selected at the same time.

nodeIcon

String, class name(s). Default: "glyphicon glyphicon-stop" as defined by Bootstrap Glyphicons

Sets the default icon to be used on all nodes, except when overridden on a per node basis in data.

onhoverColor

String, any legal color value. Default: '#F5F5F5'.

Sets the default background color activated when the users cursor hovers over a node.

searchResultBackColor

String, any legal color value. Default: undefined, inherits.

Sets the background color of the selected node.

searchResultColor

String, any legal color value. Default: '#D9534F'.

Sets the foreground color of the selected node.

selectedBackColor

String, any legal color value. Default: '#428bca'.

Sets the background color of the selected node.

selectedColor

String, any legal color value. Default: '#FFFFFF'.

Sets the foreground color of the selected node.

showBorder

Boolean. Default: true

Whether or not to display a border around nodes.

showTags

Boolean. Default: false

Whether or not to display tags to the right of each node. The values of which must be provided in the data structure on a per node basis.

Methods

Methods provide a way of interacting with the plugin programmatically. For example, expanding a node is possible via the expandNode method.

You can invoke methods in one of two ways, using either:

1. The plugin's wrapper

The plugin's wrapper works as a proxy for accessing the underlying methods.

$('#tree').treeview('methodName', args)

Limitation, multiple arguments must be passed as an array of arguments.

2. The treeview directly

You can get an instance of the treeview using one of the two following methods.

// This special method returns an instance of the treeview.
$('#tree').treeview(true)
  .methodName(args);

// The instance is also saved in the DOM elements data,
// and accessible using the plugin's id 'treeview'.
$('#tree').data('treeview')
  .methodName(args);

A better approach, if you plan a lot of interaction.

List of Methods

The following is a list of all available methods.

clearSearch()

Clear the tree view of any previous search results e.g. remove their highlighted state.

$('#tree').treeview('clearSearch');

Triggers searchCleared event

collapseAll(options)

Collapse all tree nodes, collapsing the entire tree.

$('#tree').treeview('collapseAll', { silent: true });

Triggers nodeCollapsed event; pass silent to suppress events.

collapseNode(node | nodeId, options)

Collapse a given tree node, accepts node or nodeId

$('#tree').treeview('collapseNode', [ nodeId, { silent: true } ]);

Triggers nodeCollapsed event; pass silent to suppress events.

expandAll(options)

Expand all tree nodes. Optionally can be expanded to any given number of levels.

$('#tree').treeview('expandAll', { levels: 2, silent: true });

Triggers nodeExpanded event; pass silent to suppress events.

expandNode(node | nodeId, options)

Expand a given tree node, accepts node or nodeId. Optionally can be expanded to any given number of levels.

$('#tree').treeview('expandNode', [ nodeId, { levels: 2, silent: true } ]);

Triggers nodeExpanded event; pass silent to suppress events.

getNode(nodeId)

Returns a single node object that matches the given node id.

$('#tree').treeview('getNode', nodeId);

getParent(node | nodeId)

Returns the parent node of a given node, if valid otherwise returns undefined.

$('#tree').treeview('getParent', node);

getSiblings(node | nodeId)

Returns an array of sibling nodes for a given node, if valid otherwise returns undefined.

$('#tree').treeview('getSiblings', node);

remove()

Removes the tree view component. Removing attached events, internal attached objects, and added HTML elements.

$('#tree').treeview('remove');

search(pattern, options)

Searches the tree view for nodes that match a given string, highlighting them in the tree.

Returns an array of matching nodes.

$('#tree').treeview('search', [ 'Parent', {
  ignoreCase: true,
  exactMatch: false
}]);

Triggers searchComplete event

selectNode(node | nodeId, options)

Selects a given tree node, accepts node or nodeId.

$('#tree').treeview('selectNode', [ nodeId, { silent: true } ]);

Triggers nodeSelected event; pass silent to suppress events.

toggleNodeExpanded(node | nodeId, options)

Toggles a nodes expanded state; collapsing if expanded, expanding if collapsed.

$('#tree').treeview('toggleNodeExpanded', [ nodeId, { silent: true } ]);

Triggers either nodeExpanded or nodeCollapsed event; pass silent to suppress events.

toggleNodeSelected(node | nodeId, options)

Toggles a node selected state; selecting if unselected, unselecting if selected.

$('#tree').treeview('toggleNodeSelected', [ nodeId, { silent: true } ]);

Triggers either nodeSelected or nodeUnselected event; pass silent to suppress events.

unselectNode(node | nodeId, options)

Unselects a given tree node, accepts node or nodeId.

$('#tree').treeview('unselectNode', [ nodeId, { silent: true } ]);

Triggers nodeUnselected event; pass silent to suppress events.

Events

Events are provided so that your application can respond to changes in the treeview's state. For example, if you want to update a display when a node is selected use the nodeSelected event.

You can bind to any event defined below by either using an options callback handler, or the standard jQuery .on method.

Example using options callback handler:

$('#tree').treeview({
  // The naming convention for callback's is to prepend with `on`
  // and capitalize the first letter of the event name
  // e.g. nodeSelected -> onNodeSelected
  onNodeSelected: function(event, data) {
    // Your logic goes here
  });

and using jQuery .on method

$('#tree').on('nodeSelected', function(event, data) {
  // Your logic goes here
});

List of Events

nodeCollapsed (event, node) - A node is collapsed.

nodeExpanded (event, node) - A node is expanded.

nodeSelected (event, node) - A node is selected.

nodeUnselected (event, node) - A node is unselected.

searchComplete (event, results) - After a search completes

searchCleared (event, results) - After search results are cleared

Copyright and Licensing

Copyright 2013 Jonathan Miles

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.