| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152 |
- Smalltalk createPackage: 'DOMite'!
- Object subclass: #Domite
- instanceVariableNames: 'element reference'
- package: 'DOMite'!
- !Domite commentStamp!
- I am (hopefully thin) wrapper around the notion of "cursor in a page".
- I represent a DOM node _and_ a point where
- to insert new content into it.
- So I play both the role of a container that inserts
- as well as the role of an element being inserted.
- Creation API:
- - `Domite new` creates an insertion point at the bottom of `<body>`.
- - `Domite open` is unique way to create pieces of content. It creates an instance "floating in thin air" (wrapper around DOM DocumentFragment) that can be filled with any contents and then inserted in a page.
- - `Domite fromElement: aDomElement` wraps an element and set the cursor to its end.
- Manipulation API:
- - `aDomite insertDomite:` and `aDomite insertString:` insert either a Domite or a text content at the insertion point.
- - `aDomite clearHere` deletes contents of the wrapped element.
- Cursor moving API:
- Take this sample HTML, where `[n]` are just markers, not real content:
- ```
- <body>
- <h1>header</h1>
- [4]<p>[2]Hello[1]world[3]</p>[5]
- <small>footer</small>
- </body>
- ```
- If `d` is a `Domite` representing `[1]`, then:
- - `d seekHereStart` would move `d` to be at `[2]`,
- - `d seekHereEnd` would move `d` to be at `[3]`,
- - `d seekBeforeHere` would move `d` to be at `[4]`, and
- - `d seekAfterHere` would move `d` to be at `[5]`.
- It is not presumed one would use `seekXxx`
- to actually move around in a single instance.
- It is envisioned this API will be used mostly
- in combination with `copy`, like
- `afterMe := self copy seekAfterHere`.!
- !Domite methodsFor: 'accessing'!
- element
- ^ element
- !
- element: anObject
- element := anObject
- !
- reference
- ^ reference
- !
- reference: anObject
- reference := anObject
- ! !
- !Domite methodsFor: 'deletion'!
- clearHere
- <
- var element = self['@element'], child;
- while (child = element.firstChild) element.removeChild(child);
- self['@reference'] = null;
- >
- ! !
- !Domite methodsFor: 'initialization'!
- initialize
- super initialize.
- element := document body.
- reference := nil asJSON
- ! !
- !Domite methodsFor: 'insertion'!
- insertDomite: aDomite
- self insertElement: aDomite element
- !
- insertElement: aDomElement
- self element
- insertBefore: aDomElement
- reference: self reference
- !
- insertString: aString
- self insertElement: (
- document createTextNode: aString asString )
- ! !
- !Domite methodsFor: 'navigation'!
- seekAfterHere
- self
- reference: self element nextSibling;
- element: self element parentNode
- !
- seekBeforeHere
- self
- reference: self element;
- element: self element parentNode
- !
- seekHereEnd
- self reference: nil asJSON "null"
- !
- seekHereStart
- self reference: self element firstChild
- ! !
- !Domite methodsFor: 'testing'!
- canSeekOutOfHere
- ^ self element parentNode notNil
- ! !
- !Domite class methodsFor: 'instance creation'!
- fromElement: aDomElement
- ^ self new
- element: aDomElement;
- yourself
- !
- fromElement: aDomElement cursorBefore: anotherDomElement
- ^ self new
- element: aDomElement;
- referenceElement: anotherDomElement;
- yourself
- !
- newElement: aString
- ^ self fromElement: (document createElement: aString)
- !
- open
- ^ self fromElement: document createDocumentFragment
- ! !
|
