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Strategy.Render.htm
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Strategy.Render.htm
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<!DOCTYPE HTML>
<html>
<head>
<title>L'affichage de la source</title>
<link rel="stylesheet" type="text/css" href="src/css/styles.css">
<link rel="stylesheet" type="text/css" href="src/css/syntaxes.css">
<style>
.editor {
float: left;
height: 400px;
width: 100%;
}
#eResult1 {
border: 1px solid #000;
}
</style>
</head>
<body spellcheck="false">
<a href="./index.htm">index</a>
<h1>L'affichage de la source</h1>
<div><h2>Objectif</h2>
<p>Offrir et tester différents moteurs d'affichage. Celui par défaut :</p>
<ul>
<li>Affiche uniquement les lignes visibles à l'écran.</li>
<li>Met en cache les lignes affichées (Elles sont récupèrer avec l'objet <code>oSyntax</code>).</li>
<li>Lors de l'édition, il met à jour le cache sans récupérer les lignes modifiées.</li>
</ul>
</div>
<div><h2>Diagramme</h2>
<img src="diagram/Class.Render.gif">
</div>
<div><h2>Aperçu</h2>
<label for="eStrategy">oEditor.oActiveDocument.oRender.setStrategy( </label>
<select id="eStrategy">
<option value="Default" selected>Default</option>
<option value="CacheAll">CacheAll</option>
<option value="StringCaching">StringCaching</option>
</select>
<label for="eStrategy"> ) </label>
<textarea id="eSource" wrap="off" style="width:45%; height:400px; display:none;"></textarea>
<div id="eEditeur1"></div>
<div id="eStats" class="stats"></div>
</div>
<div id="eContents"><!--var Render = (function(){
var Strategies ={
CacheAll :(function(){
var redraw =function(){
var D=this, V=D.oView, sContents=''
// 1- Récupère le contenu affiché
for( var aj=V.aVisibleRanges, j=0, nj=aj.length; j<nj; j++ ){
var a = aj[j]
sContents += '<dt>'+D.aLinesBuffer.slice( a[0]-1, a[1] ).join('<dt>')
}
// 2- Modifie la zone texte
var e = D.eTZ
, oStyle = e.style
oStyle.height = V.height
oStyle.paddingTop = V.top
oStyle.paddingBottom = V.bottom
oStyle.left = D.Padding.get('left')+'px'
D.eTZ = Tag.replaceHtml( e, sContents )
}
return {
initialize :function(){
this.aLinesBuffer = this.oSyntax.getContents()
redraw.call( this )
},
editing :function(){
var D=this, o=D.oUpdates, oD=o.oDeleted, oA=o.oAdded
Array.prototype.splice.apply( D.aLinesBuffer,
Array.merge(
oD.text
? [ oD.nLineStart-1, oD.nLineEnd-oD.nLineStart+1 ]
: [ oA.nLineStart-1, 1 ]
, oA.text
? D.oSyntax.getLines( oA.nLineStart, oA.nLineEnd )
: [D.oSyntax.getLine( oD.nLineStart )]
)
)
redraw.call( this )
},
redraw : redraw
}
})(),
StringCaching :(function(){
var redraw =function(){
var D=this, V=D.oView, sContents=''
// 1- Récupère le contenu affiché
for( var aj=V.aVisibleRanges, j=0, nj=aj.length; j<nj; j++ ){
var a = aj[j]
for( var i=a[0]-1; i<a[1]; i++ ){
var m = D.aLinesBuffer[i]
if( ! m ) m = D.aLinesBuffer[i] = ( D.oSyntax.getLine( i+1 )||' ' )
sContents += '<dt>'+ m
}
}
// 2- Modifie la zone texte
var e = D.eTZ
, oStyle = e.style
oStyle.height = V.height
oStyle.paddingTop = V.top
oStyle.paddingBottom = V.bottom
oStyle.left = D.Padding.get('left')+'px'
D.eTZ = Tag.replaceHtml( e, sContents )
}
return {
initialize :function(){
this.aLinesBuffer = []
redraw.call( this )
},
editing :function(){
var D=this, o=D.oUpdates, oD=o.oDeleted, oA=o.oAdded
Array.prototype.splice.apply( D.aLinesBuffer,
Array.merge(
oD.text
? [ oD.nLineStart-1, oD.nLineEnd-oD.nLineStart+1 ]
: [ oA.nLineStart-1, 1 ]
, oA.text
? D.oSyntax.getLines( oA.nLineStart, oA.nLineEnd )
: [D.oSyntax.getLine( oD.nLineStart )]
)
)
redraw.call( this )
},
redraw : redraw
}
})(),
Default :(function(){ // Element Caching
var redraw =function(){
var D=this, V=D.oView, e= D.eTZ
if( e.parentNode ) e=D.eTZC.removeChild( D.eTZ )
if( ! D.oSyntax ) return ;
// 1- Efface les éléments
// e.innerHTML = ''
while( e.childNodes.length ) e.removeChild( e.firstChild )
// for(var i=0, ni=e.childNodes.length; i<ni; i++ ) e.childNodes[i].style.display = 'none'
// 2- Ajoute les éléments à afficher
for( var aj=V.aVisibleRanges, j=0, nj=aj.length; j<nj; j++ ){
var a = aj[j]
for( var i=a[0]-1; i<a[1]; i++ ){
var m = D.aLinesBuffer[i]
if( ! m ) m = D.oSyntax.getLine( i+1 )
var nTop = (V.getLine(i+1)-1)*D.oCharacter.nHeight +'px'
if( ! m.parentNode ){
if( m.constructor==String ){
D.aLinesBuffer[i] = e.appendChild( Tag( 'DT', { innerHTML:m, style:{ position:'absolute', top:nTop }}))
continue ;
}
D.aLinesBuffer[i] = e.appendChild( D.aLinesBuffer[i] )
}
D.aLinesBuffer[i].style.top = nTop
// D.aLinesBuffer[i].style.display = ''
}
}
// 3- Modifie la zone texte
var oStyle = e.style
oStyle.height = V.nLinesHeight+'px'
oStyle.left = D.Padding.get('left')+'px'
D.eTZC.appendChild( e )
}
return {
initialize :function(){
this.aLinesBuffer = []
redraw.call( this )
},
editing :function(){
var D=this
, o=D.oUpdates
, nLinesDeleted = o.nLineEnd-o.nLineStart+1
, aSpliced = [ o.nLineStart-1, nLinesDeleted ]
for( var i=aSpliced[0]; i<aSpliced[1]; i++ ){
var e = D.aLinesBuffer[ i ]
if( e && e.parentNode ) D.eTZ.removeChild( e )
}
var a = D.oSyntax.getLines( o.nLineStart, o.nLineEnd + o.nLineShift )
Array.prototype.splice.apply( D.aLinesBuffer, aSpliced.concat( a ))
redraw.call( this )
},
redraw : redraw
}
})()
}
var RS =function( D, sStrategyName ){
this.execAction =function( s ){ // initialize, editing, redraw
s = s || 'redraw'
var o = this.oStrategy
if( o ) return o[s] ? o[s].call( D ) : o.redraw.call( D )
throw new Error ( '"'+ this.sStrategyName +'" render strategy: action "'+ s +'" undefined.' )
}
this.removeCache =function( nLineStart, nLineEnd ){
for( var i=nLineStart-1, ni=nLineEnd; i<ni; i++ )
D.aLinesBuffer[i]=''
}
this.setStrategy =function( s ){
if( ! Strategies[ s ]) throw new Error ( '"'+ s +'" render strategy undefined.' )
this.oStrategy = Strategies[ this.sStrategyName=s ]
this.execAction( 'initialize' )
}
this.setStrategy( sStrategyName||'Default' )
}
RS.get =function( s ){ return Strategies[ s ]}
RS.addStrategy =function( s, o ){
if( o.initialize && o.editing && o.redraw )
return Strategies[ s ] = o
throw new Error ( '"'+ s +'" render strategy is not valid.' )
}
return RS
})()
--></div>
<script src="shared.js"></script>
<script src="src/js/Editor.js"></script>
<script src="src/js/Commands.js"></script>
<script src="src/js/KeyBoard.js"></script>
<script src="src/js/Selection.js"></script>
<script src="src/js/UndoStack.js"></script>
<script src="src/js/Syntax.js"></script>
<script src="src/js/Brackets.js"></script>
<script src="src/js/TextMarker.js"></script>
<script src="src/js/Fold.js"></script>
<link rel="stylesheet" type="text/css" href="src/stats.css">
<script src="src/stats.js"></script>
<script>
_( 'eEditeur1,eSource,eContents,eTOKENS,eStats,eStrategy' )
eSource.value = eContents.firstChild.data
Events.add(
eStrategy, 'change', function(){ oEditor.oActiveDocument.oRender.setStrategy( eStrategy.value )}
)
BenchmarkFunctions(
eStats, Editor.Strategies.Render.prototype,
'execAction,removeCache,setStrategy'
)
var oEditor = new Editor ( eEditeur1, { sSyntax:'JS' })
var D = oEditor.newDoc( 'Source', eSource.value )
var F = D.oFold
oEditor.execCommand( 'FOLD_LEVEL_3' )
F.unfold( 85, true )
oEditor.execCommand( 'FOLD_LEVEL_4' )
F.unfold( 118, true )
F.fold( 159, true )
oEditor.execCommand( 'FOLD_LEVEL_5' )
</script>
<link rel="stylesheet" type="text/css" href="src/toc.css">
<script src="src/toc.js"></script>
<script>setTOC("Strategy.Render.htm")</script>
</body>
</html>