A treeview for AngularJS with filtering, checkbox support, custom templates, and more.
- Getting Started
- Example Usage
- Options
- All the Options
- Treeview Manager Service
ivhTreeviewMgr.select(tree, node[, opts][, isSelected])ivhTreeviewMgr.selectAll(tree[, opts][, isSelected])ivhTreeviewMgr.selectEach(tree, nodes[, opts][, isSelected])ivhTreeviewMgr.deselect(tree, node[, opts])ivhTreeviewMgr.deselectAll(tree[, opts])ivhTreeviewMgr.deselectEach(tree, nodes[, opts])ivhTreeviewMgr.expand(tree, node[, opts][, isExpanded])ivhTreeviewMgr.expandRecursive(tree[, node[, opts][,isExpanded]])ivhTreeviewMgr.expandTo(tree, node[, opts][, isExpanded])ivhTreeviewMgr.collapse(tree, node[, opts])ivhTreeviewMgr.collapseRecursive(tree[, node[, opts]])ivhTreeviewMgr.collapseParents(tree, node[, opts])ivhTreeviewMgr.validate(tree[, opts][, bias])
- Dynamic Changes
- Tree Traversal
- Optimizations and Known Limitations
- Reporting Issues
- Contributing
- Release History
- License
IVH Treeview can be installed with bower and npm:
bower install angular-ivh-treeview
# or
npm install angular-ivh-treeview
Once installed, include the following files in your app:
dist/ivh-treeview.jsdist/ivh-treeview.cssdist/ivh-treeview-theme-basic.css(optional minimalist theme)
And add the ivh.treeview module to your main Angular module:
angular.module('myApp', [
'ivh.treeview'
// other module dependencies...
]);You're now ready to use the ivh-treeview directive, ivhTreeviewMgr service,
and ivhTreeviewBfs service.
In your controller...
app.controller('MyCtrl', function() {
this.bag = [{
label: 'Glasses',
value: 'glasses',
children: [{
label: 'Top Hat',
value: 'top_hat'
},{
label: 'Curly Mustache',
value: 'mustachio'
}]
}];
this.awesomeCallback = function(node, tree) {
// Do something with node or tree
};
this.otherAwesomeCallback = function(node, isSelected, tree) {
// Do soemthing with node or tree based on isSelected
}
});In your view...
<div ng-controller="MyCtrl as fancy">
<input type="text" ng-model="bagSearch" />
<div
ivh-treeview="fancy.bag"
ivh-treeview-filter="bagSearch">
</div>
</div>IVH Treeview is pretty configurable. By default it expects your elements to have
label and children properties for node display text and child nodes
respectively. It'll also make use of a selected attribute to manage selected
states. If you would like to pick out nodes by ID rather than reference it'll
also use an id attribute. Those attributes can all be changed, for example:
<div ng-controller="MyCtrl as fancy">
<div ivh-treeview="fancy.bag"
ivh-treeview-id-attribute="'uuid'"
ivh-treeview-label-attribute="'text'"
ivh-treeview-children-attribute="'items'"
ivh-treeview-selected-attribute="'isSelected'">
</div>IVH Treeview attaches checkboxes to each item in your tree for a hierarchical
selection model. If you'd rather not have these checkboxes use
ivh-treeview-use-checkboxes="false":
<div ng-controller="MyCtrl as fancy">
<div ivh-treeview="fancy.bag"
ivh-treeview-use-checkboxes="false">
</div>There's also a provider if you'd like to change the global defaults:
app.config(function(ivhTreeviewOptionsProvider) {
ivhTreeviewOptionsProvider.set({
idAttribute: 'id',
labelAttribute: 'label',
childrenAttribute: 'children',
selectedAttribute: 'selected',
useCheckboxes: true,
disableCheckboxSelectionPropagation: false,
expandToDepth: 0,
indeterminateAttribute: '__ivhTreeviewIndeterminate',
expandedAttribute: '__ivhTreeviewExpanded',
defaultSelectedState: true,
validate: true,
twistieExpandedTpl: '(-)',
twistieCollapsedTpl: '(+)',
twistieLeafTpl: 'o',
nodeTpl: '...'
});
});Note that you can also use the ivhTreeviewOptions service to inspect global
options at runtime. For an explanation of each option see the comments in the
source for ivhTreeviewOptions.
app.controller('MyCtrl', function(ivhTreeviewOptions) {
var opts = ivhTreeviewOptions();
// opts.idAttribute === 'id'
// opts.labelAttribute === 'label'
// opts.childrenAttribute === 'children'
// opts.selectedAttribute === 'selected'
// opts.useCheckboxes === true
// opts.disableCheckboxSelectionPropagation === false
// opts.expandToDepth === 0
// opts.indeterminateAttribute === '__ivhTreeviewIndeterminate'
// opts.expandedAttribute === '__ivhTreeviewExpanded'
// opts.defaultSelectedState === true
// opts.validate === true
// opts.twistieExpandedTpl === '(-)'
// opts.twistieCollapsedTpl === '(+)'
// opts.twistieLeafTpl === 'o'
// opts.nodeTpl =(eh)= '...'
});We support filtering through the ivh-treeview-filter attribute, this value is
supplied to Angular's filterFilter and applied to each node individually.
IVH Treeview uses ngHide to hide filtered out nodes. If you would like to
customize the hide/show behavior of nodes as they are filtered in and out of
view (e.g. with ngAnimate) you can target elements with elements with the
.ivh-treeview-node class:
/* with e.g. keyframe animations */
.ivh-treeview-node.ng-enter {
animation: my-enter-animation 0.5s linear;
}
.ivh-treeview-node.ng-leave {
animation: my-leave-animation 0.5s linear;
}
/* or class based animations */
.ivh-treeview-node.ng-hide {
transition: 0.5s linear all;
opacity: 0;
}
/* alternatively, just strike-through filtered out nodes */
.ivh-treeview-node.ng-hide {
display: block !important;
}
.ivh-treeview-node.ng-hide .ivh-treeview-node-label {
color: red;
text-decoration: line-through;
}Demo: Filtering
If you want the tree to start out expanded to a certain depth use the
ivh-treeview-expand-to-depth attribute:
<div ng-controller="MyCtrl as fancy">
<div
ivh-treeview="fancy.bag"
ivh-treeview-expand-to-depth="2"
ivh-treeview-use-checkboxes="false">
</div>You can also use the ivhTreeviewOptionsProvider to set a global default.
If you want the tree entirely expanded use a depth of -1. Providing a depth
greater than your tree's maximum depth will cause the entire tree to be
initially expanded.
Demo: Expand to depth on load
When using checkboxes you can have a default selected state of true or
false. The default selected state is used when validating your tree data with
ivhTreeviewMgr.validate which will assume this state if none is specified,
i.e. any node without a selected state will assume the default state.
Futhermore, when ivhTreeviewMgr.validate finds a node whose selected state
differs from the default it will assign the same state to each of that node's
childred, parent nodes are updated accordingly.
Use ivh-treeview-default-selected-state attribute or defaultSelectedState
option to set this property.
Demo: Default selected state and validate on startup
ivh.treeview will not assume control of your model on startup if you do not
want it to. You can opt out of validation on startup by setting
ivh-treeview-validate="false" at the attribute level or by globally setting
the validate property in ivhTreeviewOptionsProvider.
Demo: Default selected state and validate on startup
The basic twisties that ship with this ivh.treeview are little more than ASCII
art. You're encouraged to use your own twistie templates. For example, if you've
got bootstrap on your page you might do something like this:
ivhTreeviewOptionsProvider.set({
twistieCollapsedTpl: '<span class="glyphicon glyphicon-chevron-right"></span>',
twistieExpandedTpl: '<span class="glyphicon glyphicon-chevron-down"></span>',
twistieLeafTpl: '●'
});If you need different twistie templates for different treeview elements you can assign these templates at the attribute level:
<div
ivh-treeview="fancy.bag"
ivh-treeview-twistie-leaf-tpl="'-->'">
</div>Alternatively, you can pass them as part of a full configuration object.
Demo: Custom twisties
IVH Treeview allows you to fully customize your tree nodes. See docs/templates-and-skins.md for demos and details.
Want to register a callback for whenever a user expands or collapses a node? Use
the ivh-treeview-on-toggle attribute. Your expression will be evaluated with
the following local variables: ivhNode, the node that was toggled; ivhTree,
the tree it belongs to; ivhIsExpanded, whether or not the node is now
expanded.
<div ng-controller="MyCtrl as fancy">
<div
ivh-treeview="fancy.bag"
ivh-treeview-on-toggle="fancy.awesomeCallback(ivhNode, ivhIsExpanded, ivhTree)">
</div>You may also supply a toggle handler as a function (rather than an angular
expression) using ivh-treeview-options or by setting a global onToggle
option. In this case the function will be passed a single object with ivhNode
and ivhTree properties.
Demo: Toggle Handler
Want to be notified any time a checkbox changes state as the result of a click?
Use the ivh-treeview-on-cb-change attribute. Your expression will be evaluated
whenever a node checkbox changes state with the following local variables:
ivhNode, the node whose selected state changed; ivhIsSelected, the new
selected state of the node; and ivhTree, the tree ivhNode belongs to.
You may also supply a selected handler as a function (rather than an angular
expression) using ivh-treeview-options or by setting a global onCbChange
option. In this case the function will be passed a single object with ivhNode,
ivhIsSelected, and ivhTree properties.
Note that programmatic changes to a node's selected state (including selection change propagation) will not trigger this callback. It is only run for the actual node clicked on by a user.
<div ng-controller="MyCtrl as fancy">
<div
ivh-treeview="fancy.bag"
ivh-treeview-on-cb-change="fancy.otherAwesomeCallback(ivhNode, ivhIsSelected, ivhTree)">
</div>Demo: Select/Deselect Handler
If passing a configuration object is more your style than inlining everything in the view, that's OK too.
In your fancy controller...
this.customOpts = {
useCheckboxes: false,
onToggle: this.awesomeCallback
};In your view...
<div
ivh-treeview="fancy.bag"
ivh-treeview-options="fancy.customOpts">
</div>Any option that can be set with ivhTreeviewOptionsProvider can be overriden
here.
ivh.treeview supplies a service, ivhTreeviewMgr, for interacting with your
tree data directly.
Select (or deselect) an item in tree, node can be either a reference to the
actual tree node or its ID.
We'll use settings registered with ivhTreeviewOptions by default, but you can
override any of them with the optional opts parameter.
isSelected is also optional and defaults to true (i.e. the node will be
selected).
When an item is selected each of its children are also selected and the indeterminate state of each of the node's parents is validated.
Demo: Programmatic select/deselect
Like ivhTreeviewMgr.select except every node in tree is either selected or
deselected.
Demo: Programmatic selectAll/deselectAll
Like ivhTreeviewMgr.select except an array of nodes (or node IDs) is used.
Each node in tree corresponding to one of the passed nodes will be selected
or deselected.
Demo: Programmatic selectEach/deselectEach
A convenience method, delegates to ivhTreeviewMgr.select with isSelected set
to false.
Demo: Programmatic select/deselect
A convenience method, delegates to ivhTreeviewMgr.selectAll with isSelected
set to false.
Demo: Programmatic selectAll/deselectAll
A convenience method, delegates to ivhTreeviewMgr.selectEach with isSelected
set to false.
Demo: Programmatic selectEach/deselectEach
Expand (or collapse) a given node in tree, again node may be an actual
object reference or an ID.
We'll use settings registered with ivhTreeviewOptions by default, but you can
override any of them with the optional opts parameter.
By default this method will expand the node in question, you may pass false as
the last parameter though to collapse the node. Or, just use
ivhTreeviewMgr.collapse.
Demo: Programmatic expand/collapse
Expand (or collapse) node and all its child nodes. Note that you may omit the
node parameter (i.e. expand/collapse the entire tree) but only when all other
option parameters are also omitted.
Demo: Programmatic recursive expand/collapse
Expand (or collapse) all parents of node. This may be used to "reveal" a
nested node or to recursively collapse all parents of a node.
Demo: Programmatic reveal/hide
A convenience method, delegates to ivhTreeviewMgr.expand with isExpanded
set to false.
A convenience method, delegates to ivhTreeviewMgr.expandRecursive with
isExpanded set to false,
Demo: Programmatic recursive expand/collapse
A convenience method, delegates to ivhTreeviewMgr.expandTo with isExpanded
set to false.
Demo: Programmatic reveal/hide
Validate a tree data store, bias is a convenient redundancy for
opts.defaultSelectedState.
When validating tree data we look for the first node in each branch which has a
selected state defined that differs from opts.defaultSelectedState (or
bias). Each of that node's children are updated to match the differing node
and parent indeterminate states are updated.
Demo: Programmatic select/deselect
Adding and removing tree nodes on the fly is supported. Just keep in mind that
added nodes do not automatically inherit selected states (i.e. checkbox states)
from their parent nodes. Similarly, adding new child nodes does not cause parent
nodes to automatically validate their own selected states. You will typically
want to use ivhTreeviewMgr.validate or ivhTreeviewMgr.select after adding
new nodes to your tree:
// References to the tree, parent node, and children...
var tree = getTree()
, parent = getParent()
, newNodes = [{label: 'Hello'},{label: 'World'}];
// Attach new children to parent node
parent.children = newNodes;
// Force revalidate on tree given parent node's selected status
ivhTreeviewMgr.select(myTree, parent, parent.selected);The internal tree traversal service is exposed as ivhTreeviewBfs (bfs -->
breadth first search).
We perform a breadth first traversal of tree applying the function cb to
each node as it is reached. cb is passed two parameters, the node itself and
an array of parents nodes ordered nearest to farthest. If the cb returns
false traversal of that branch is stopped.
Note that even if false is returned each of nodes siblings will still be
traversed. Essentially none of nodes children will be added to traversal
queue. All other branches in tree will be traversed as normal.
In other words returning false tells ivhTreeviewBfs to go no deeper in the
current branch only.
Demo: ivhTreeviewBfs in
action
The default node template assumes a reasonable number of tree nodes. As your tree grows (3k-10k+ nodes) you will likely notice a significant dip in performance. This can be mitigated by using a custom template with a few easy tweaks.
Only process visible nodes by adding an ng-if to the
ivh-treeview-children element. This small change will result in significant
performance boosts for large trees as now only the visible nodes (i.e. nodes
with all parents expanded) will be processed. This change will likely be added
to the default template in version 1.1.
Use Angular's bind-once syntx in a custom template. The default template supports [email protected] and so does not leverage the native double-colon syntax to make one time bindings. By binding once where possible you can trim a large number of watches from your trees.
- Creating multiple treeviews within an ngRepeat loops creates an issue where each treeview accesses the same controller instance after initial load. See issue #113.
- We use Angular's
filterFilterfor filtering, by default this compares your filter string with at all object attributes. This directive attaches an attribute to your tree nodes to track its selected state (e.g.selected: false). If you want your filter to ignore the selection tracking attribute use an object or function filter. See issue #151.
When reporting an issue please take a moment to reproduce your setup by modifying our starter template. Only make as many changes as necessary to demonstrate your issue but do comment your added code.
Please use Stack Overflow for general questions and help with implementation.
Please see our consolidated contribution guidelines.
- 2015-11-29 v1.0.2 Allow numeric ids as well as string ids
- 2015-09-23 v1.0.0 Use expressions rather than callbacks for change/toggle handlers, update default template. See MIGRATING doc for breaking changes.
- 2015-05-06 v0.10.0 Make node templates customizable
- 2015-02-10 v0.9.0 All options are set-able via attributes or config object
- 2015-01-02 v0.8.0 Add ability to expand/collapse nodes programmatically
- 2014-09-21 v0.6.0 Tree accepts nodes added on the fly
- 2014-09-09 v0.3.0 Complete refactor. Directive no longer propagates changes automatically on programmatic changes, use ivhTreeviewMgr.
- 2014-08-25 v0.2.0 Allow for initial expansion
- 2014-06-20 v0.1.0 Initial release
MIT license, copyright iVantage Health Analytics, Inc.
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