Class: HTMLElement

• Inheritance
• Description
• Related information
• Class protocol
  • helpers
  • instance release
• Instance protocol
  • accessing
  • enumerating
  • printing
  • queries
  • testing

Inheritance:

   Object
   |
   +--Collection
      |
      +--SequenceableCollection
         |
         +--ArrayedCollection
            |
            +--Array
               |
               +--HTMLElement
                  |
                  +--HTMLMarkup
                  |
                  +--HTMLText

Package:

stx:libhtml

Category:

System-Documentation

Version:

rev: 1.30 date: 2017/07/20 10:06:52

user: cg

file: HTMLElement.st directory: libhtml

module: stx stc-classLibrary: libhtml

Author:

Claus Gittinger

Description:

Notice & Warning: 
    this HTML markup framework and the corresponding parser
    started as a quick hack (in the 90's) when replacing a buggy mosaic
    X-widget with a Smalltalk written HTML viewer. 
    Its goals were to be fast enough for typical uses, to be not too memory hungry
    and to provide the functionality required to display simple help documents.
    It was NOT meant to become a full featured web-browser replacement.

    The viewer and htmlElement framework are still in use as the document viewer inside ST/X,
    and supported to the extent that simple online help documents and html-tooltips are to be displayed.
    However, there are no plans to further enhance or spend other time on its maintenance.

    If you need more sophisticated html/dom/doc functionality, you may want to use either
    the HTMLTree framework or one of the free frameworks found in the goodies folder.


a generic element (both TAGS and text-fragments).
This is an abstract class, providing support to handle
a document as a linked list of elements..

Related information:

    HTMLParser
    HTMLDocumentPainter

Class protocol:

 colorForSpec: aSpec

returns the color for a spec or nil

 lowSpaceCleanup

cleanup in low-memory situations

 releaseColors

release cached colors

Instance protocol:

 bounds

return bounds; a rectangle or rectangle collection

 bounds: aRectangleOrRectangleCollection

set bounds; a rectangle or rectangle collection

 colorParameter: keyword

return the color of a color parameter - or nil, if there is none

 hasParameterFor: keyword

Modified (format): / 19-11-2016 / 15:48:22 / cg

 id

 name

 next

 next: something

 numericParameterFor: keyword

return the value of a number parameter - or nil, if there is none

 numericParameterFor: keyword default: default

return the value of a number parameter - or the default, if there is none

 parameterFor: keyword

 parameterFor: keyword put: newValue

 parameterSlotIndexFor: keyword

 parent

 parent: something

 sourcePosition

 sourcePosition: something

 styleParameterFor: keyword

limited style= value extraction.
Does not handle all cases (currently); no escaped quotes, for example.
Just a quick hack to allow for <img style=''width:w; height:h''> to be parsed.

 tag

return the markup's tag, a symbol or nil

 type

return the markup's type, a symbol or nil

 do: aBlock

evaluate aBlock for myself and all remaining elements

 printElementsDo: aBlock

redefined to show only the attributes contained within the array

 displayOn: aStream

(comment from inherited method)
print a representation of the receiver on aGCOrStream for display in inspectors etc.

 printHTMLOn: aStream

 printOn: aStream

(comment from inherited method)
append a printed representation of the receiver to aStream

 boundsTop

 isAnchor

 isEndTag

 isFormElement

 isFormEndElement

 isHead

 isHeading

 isImageElement

 isInputElement

 isOptionElement

 isSelectElement

 isSelectEndElement

 isTextElement