HierarchyPainter

HierarchyPainter

new HierarchyPainter(name, frameid, backgropt)

Painter of hierarchical structures

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Example
import { HierarchyPainter } from 'https://root.cern/js/latest/modules/gui/HierarchyPainter.mjs';
// create hierarchy painter in 'myTreeDiv'
let h = new HierarchyPainter('example', 'myTreeDiv');
// configure 'simple' layout in 'myMainDiv'
// one also can specify 'grid2x2' or 'flex' or 'tabs'
h.setDisplay('simple', 'myMainDiv');
// open file and display element
h.openRootFile('https://root.cern/js/files/hsimple.root').then(() => h.display('hpxpy;1','colz'));
Parameters:
Name Type Attributes Description
name string

symbolic name
frameid string

element id where hierarchy is drawn
backgr string <optional>

background color

Methods

(private) _runMonitoring()

Runs monitoring event loop

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(private) activateItems(items, forceopt)

activate (select) specified item

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Parameters:
Name Type Attributes Description
items Array

array of items names
force boolean <optional>

if specified, all required sub-levels will be opened

(private) addItemHtml()

Create item html code

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(async) applyStyle(style)

Apply loaded TStyle object

Description:

  • One also can specify item name of JSON file name where style is loaded

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Parameters:
Name Type Description
style object | string

either TStyle object of item name where object can be load

(private) canDisplay()

Checks if item can be displayed with given draw option

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(private) canExpandItem()

Check if item can be (potentially) expand

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(private) changeDarkMode()

Handle changes of dark mode

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(private) checkResize()

Process resize event

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cleanup()

Cleanup hierarchy painter

Description:

  • clear drawing and browser

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(private) cleanupFrame()

method called when MDI element is cleaned up

Description:

  • hook to perform extra actions when frame is cleaned

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(private) clearDrop()

Remove all drop handlers on the frame

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(private) clearHierarchy()

Cleanup all items in hierarchy

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(async) createBrowser() → {Promise}

Create browser elements

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Returns:

when completed

Type
Promise

createButtons()

Create shortcut buttons

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(async, private) createCustomDisplay(itemname, custom_kind) → {Promise}

If possible, creates custom MDIDisplay for given item

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Parameters:
Name Type Description
itemname

name of item, for which drawing is created
custom_kind

display kind
Returns:

with mdi object created

Type
Promise

(async, private) createDisplay() → {Promise}

Creates configured MDIDisplay object

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Returns:

when ready

Type
Promise

(async) createStatusLine(heightopt, modeopt) → {Promise}

Create status line

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Parameters:
Name Type Attributes Description
height number <optional>

size of the status line
mode <optional>

false / true / 'toggle'
Returns:

when ready

Type
Promise

(private) direct_contextmenu()

alternative context menu, used in the object inspector

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(async) display(itemname, drawoptopt, interactiveopt) → {Promise}

Display specified item

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Parameters:
Name Type Attributes Description
itemname string

item name
drawopt string <optional>

draw option for the item
interactive boolean <optional>

if display was called in interactive mode, will activate selected drawing
Returns:

with created painter object

Type
Promise

(async, private) displayItems() → {Promise}

Display all provided elements

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Returns:

when drawing finished

Type
Promise

(async, private) dropItem() → {Promise}

Drop item on specified element for drawing

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Returns:

when completed

Type
Promise

(private) enableDrag()

Enable drag of the element

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(private) enableDrop()

Enable drop on the frame

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enableMonitoring()

Enable monitoring mode

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(async, protected) exapndToLevel()

Exapnd to specified level

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(async) executeCommand(itemname, elemopt, arg1opt, arg2opt) → {Promise}

Executes item marked as 'Command'

Description:

  • If command requires additional arguments, they could be specified as extra arguments arg1, arg2, ...

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Parameters:
Name Type Attributes Description
itemname String

name of command item
elem Object <optional>

HTML element for command execution
arg1 <optional>

first optional argument
arg2 <optional>

second optional argument and so on
Returns:

with command result

Type
Promise

(async) expandItem(itemname) → {Promise}

expand specified item

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Parameters:
Name Type Description
itemname String

item name
Returns:

when ready

Type
Promise

(private) fileHierarchy()

Create file hierarchy

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(private) fillOnlineMenu()

Fill context menu for online item

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(private) fillSettingsMenu()

Fills settings menu items

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(private) findItem(arg)

Search item in the hierarchy

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Parameters:
Name Type Description
arg object | string

item name or object with arguments

Properties
Name Type Attributes Description
name string

item to search
force boolean <optional>

specified elements will be created when not exists
last_exists boolean <optional>

when specified last parent element will be returned
check_keys boolean <optional>

check TFile keys with cycle suffix
allow_index boolean <optional>

let use sub-item indexes instead of name
top object <optional>

element to start search from

(private) findRootFileForItem()

Find ROOT file which corresponds to provided item name

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(async, private) focusOnItem(hitem) → {Promise}

Focus on hierarchy item

Description:

  • all parents to the otem will be opened first

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Parameters:
Name Type Description
hitem Object | string

item to open or its name
Returns:

when done

Type
Promise

(private) forEachItem(func, topopt)

Iterate over all items in hierarchy

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Parameters:
Name Type Attributes Description
func function

function called for every item
top object <optional>

top item to start from

(private) forEachJsonFile()

Call function for each item which corresponds to JSON file

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(private) forEachRootFile()

Call function for each item which corresponds to ROOT file

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getDisplay()

Returns actual MDI display object

Description:

  • It should an instance of MDIDsiplay class

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(private) getFileProp()

Provides information abouf file item

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getLayout()

Returns configured layout

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getMonitoringInterval()

Returns configured monitoring interval in ms

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(async, private) getObject(arg, options) → {Promise}

Get object item with specified name

Description:

  • depending from provided option, same item can generate different object types

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Parameters:
Name Type Description
arg Object

item name or config object

Properties
Name Type Description
name string

item name
item Object

or item itself
options string

supposed draw options
Returns:

with object like { item, obj, itemname }

Type
Promise

(async, private) getOnlineItem() → {Promise}

method used to request object from the http server

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Returns:

with requested object

Type
Promise

(private) getOnlineItemUrl()

Provides URL for online item

Description:

  • Such URL can be used to request data from the server

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Returns:

string or null if item is not online

(private) getOnlineProp()

Get properties for online item - server name and relative name

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(private) getTopOnlineItem()

Return main online item

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hasStatusLine()

Returns trus if status is exists

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(async, private) importModule() → {Promise}

Dynamic module import, supports special shorcuts from core or draw_tree

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Returns:

with module

Type
Promise

initializeBrowser()

Initialize browser elements

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isItemDisplayed(itemname)

Returns true if given item displayed

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Parameters:
Name Type Description
itemname string

item name

(private) isLastSibling()

returns true if item is last in parent childs list

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isMonitoring()

Returns true when monitoring is enabled

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(private) isOnlineItem()

Returns true if item is online

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(private) itemFullName(node, uptoparentopt, compactopt) → {string}

Produce full string name for item

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Parameters:
Name Type Attributes Description
node Object

item element
uptoparent Object <optional>

up to which parent to continue
compact boolean <optional>

if specified, top parent is not included
Returns:

produced name

Type
string

(async) listServerDir()

Create list of files for specified directory

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(async, private) loadScripts()

Load and execute scripts, kept to support v6 applications

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(async) openJsonFile(filepath) → {Promise}

Open JSON file

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Parameters:
Name Type Description
filepath string

URL to JSON file
Returns:

when object ready

Type
Promise

(async) openOnline(server_address) → {Promise}

Access THttpServer with provided address

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Parameters:
Name Type Description
server_address string

URL to server like 'http://localhost:8090/'
Returns:

when ready

Type
Promise

(async) openRootFile(filepath) → {Promise}

Open ROOT file

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Parameters:
Name Type Description
filepath string

URL to ROOT file, argument for openFile
Returns:

when file is opened

Type
Promise

(async) player(itemname, optionopt) → {Promise}

Starts player for specified item

Description:

  • Same as 'Player' context menu

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Parameters:
Name Type Attributes Description
itemname string

item name for which player should be started
option string <optional>

extra options for the player
Returns:

when ready

Type
Promise

(private) prepareGuiDiv()

Prepare div element - create layout and buttons

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(private) redrawObject()

Redraw hierarchy

Description:

  • works only when inspector or streamer info is displayed

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(async) refreshHtml() → {Promise}

Refresh HTML code of hierarchy painter

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Returns:

when done

Type
Promise

(async) reload() → {Promise}

Reload hierarchy and refresh html code

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Returns:

when completed

Type
Promise

(private) removePainter()

Remove painter reference from hierarhcy

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(private) setBasicColors()

Set basic colors

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setDisplay(layout, frameid)

Assign default layout and place where drawing will be performed

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Parameters:
Name Type Description
layout string

layout like 'simple' or 'grid2x2'
frameid string

DOM element id where object drawing will be performed

(private) setHierarchy()

Assign existing hierarchy to the painter and refresh HTML code

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setMonitoring(interval, flag)

Configures monitoring interval

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Parameters:
Name Type Description
interval number

repetition interval in ms
flag boolean

initial monitoring state

(async, private) startGUI() → {Promise}

Start GUI

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Returns:

when ready

Type
Promise

(private) toggleDarkMode()

Toggle dark mode

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toggleOpenState(isopen) → {boolean}

Toggle open state of the item

Description:

  • Used with 'expand all' / 'collapse all' buttons in normal GUI

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Parameters:
Name Type Description
isopen boolean

if items should be expand or closed
Returns:

true when any item was changed

Type
boolean

(private) tree_click()

Handler for click event of item in the hierarchy

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(private) tree_contextmenu()

Handle context menu in the hieararchy

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(private) tree_mouseover()

Handler for mouse-over event

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(private) updateBackground()

Update item background

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(async) updateItems(arg) → {Promise}

Update specified items

Description:

  • Method can be used to fetch new objects and update all existing drawings

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Parameters:
Name Type Description
arg string | array | boolean

either item name or array of items names to update or true if only automatic items will be updated
Returns:

when ready

Type
Promise

(private) updateOnOtherFrames()

function updates object drawings for other painters

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(private) updateTreeNode()

Update item node

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