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

(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

cleanup()

Cleanup hierarchy painter

Description:

  • clear drawing and browser

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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) 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

(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

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

Source:
Parameters:
Name Type Description
itemname String

item name
Returns:

when ready

Type
Promise

getDisplay()

Returns actual MDI display object

Description:

  • It should an instance of MDIDsiplay class

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getLayout()

Returns configured layout

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getMonitoringInterval()

Returns configured monitoring interval in ms

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hasStatusLine()

Returns trus if status is exists

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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

isMonitoring()

Returns true when monitoring is enabled

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(async) listServerDir()

Create list of files for specified directory

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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

Source:
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

(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

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

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

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

(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