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Class ::xowiki::includelet::graph

::xowiki::includelet::graph create ... \
           [ -__decoration (default "plain") ]

Class Relations

• class: ::xowiki::IncludeletClass
• superclass: ::xowiki::Includelet
• subclass: ::xowiki::includelet::activity-graph, ::xowiki::includelet::collab-graph

::xowiki::IncludeletClass create ::xowiki::includelet::graph \
     -superclass ::xowiki::Includelet

Methods (to be applied on instances)

• __decoration (setter)

• graphHTML (scripted)

  
  ::xo::Page requireJS "/resources/ajaxhelper/prototype/prototype.js"
  set user_agent [string tolower [ns_set iget [ns_conn headers] User-Agent]]
  if {[string match "*msie *" $user_agent]} {
    # canvas support for MSIE
    ::xo::Page requireJS "/resources/xowiki/excanvas.js"
  }
  ::xo::Page requireJS "/resources/xowiki/collab-graph.js"
  ::xo::Page requireJS "/resources/ajaxhelper/yui/yahoo/yahoo.js"
  ::xo::Page requireJS "/resources/ajaxhelper/yui/event/event.js"
  
  set nodesHTML ""
  array set n $nodes
  
  foreach {node label} $nodes {
    set link "<a href='[ns_quotehtml $base?$attrib=$node]'>[ns_quotehtml $label]</a>"
    append nodesHTML "<div id='[ns_quotehtml $node]' style='position:relative;'>&nbsp;&nbsp;&nbsp;&nbsp;$link</div>\n"
  }
  
  set edgesHTML ""; set c 0
  foreach p [lsort -index 1 -decreasing -integer $edges] {
    lassign $p edge weight width
    lassign [split $edge ,] a b
    #:log "--G $a -> $b check $c > $max_edges, $weight < $cutoff"
    if {[incr c] > $max_edges} break
    if {$weight < $cutoff} continue
    append edgesHTML "g.addEdge(\$('$a'), \$('$b'), $weight, 0, $width);\n"
  }
  # [lsort -index 1 -decreasing -integer $edges]<br>[set cutoff] - [set c]<br>
  
  return [subst -novariables {
    <div>
    <canvas id="collab" width="500" height="500" style="border: 0px solid black">
    </canvas>
    [set nodesHTML]
    <script type="text/javascript" nonce='[security::csp::nonce]'>
    function draw() {
      if (typeof(G_vmlCanvasManager) == "object") {
        G_vmlCanvasManager.init_(window.document);
      }
  
      var g = new Graph();
      [set edgesHTML]
      var layouter = new Graph.Layout.Spring(g);
      layouter.layout();
  
      // IE does not pick up the canvas width or height
      $('collab').width=500;
      $('collab').height=500;
  
      var renderer = new Graph.Renderer.Basic($('collab'), g);
      renderer.radius = 5;
      renderer.draw();
    }
    YAHOO.util.Event.addListener(window, 'load', draw);
    //   YAHOO.util.Event.onContentReady('collab', draw);
    </script>
    </div>
  }]

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