add rudimentary logic for text segmentation in lemmatizer

diff --git a/stemmaweb/lib/stemmaweb/Controller/Relation.pm b/stemmaweb/lib/stemmaweb/Controller/Relation.pm
index cd67f6a..2671473 100644 (file)
--- a/stemmaweb/lib/stemmaweb/Controller/Relation.pm
+++ b/stemmaweb/lib/stemmaweb/Controller/Relation.pm
@@ -69,33 +69,66 @@ sub definitions :Local :Args(0) {
 
 sub text :Chained('/') :PathPart('relation') :CaptureArgs(1) {
        my( $self, $c, $textid ) = @_;
-       $c->stash->{'tradition'} = $c->model('Directory')->tradition( $textid );
+       # If the tradition has more than 500 ranks or so, split it up.
+       my $tradition = $c->model('Directory')->tradition( $textid );
+       my $length = $tradition->collation->end->rank;
+       if( $length > 700 ) {
+               # Segment the tradition in order not to overload the browser.
+               # Split it up into units of 500 ranks, but have each segment show
+               # 550 ranks so that overlap works.
+               my @divs;
+               my $r = 0;
+               while( $r + 50 < $length ) {
+                       push( @divs, $r );
+                       $r += 500;
+               }
+               $c->stash->{'textsegments'} = [];
+               foreach my $start ( @divs ) {
+                       my $seg = { 'start' => $start };
+                       $seg->{'end'} = $start + 550 > $length ? $length : $start + 550;
+                       push( @{$c->stash->{'textsegments'}}, $seg );
+               }
+       }
+       $c->stash->{'textid'} = $textid;
+       $c->stash->{'tradition'} = $tradition;
 }
 
 sub main :Chained('text') :PathPart('') :Args(0) {
        my( $self, $c ) = @_;
+       my $startseg = $c->req->param('start');
        my $tradition = delete $c->stash->{'tradition'};
        my $collation = $tradition->collation;
-       my $svg_str = $collation->as_svg;
+       my $svgopts;
+       if( $startseg ) {
+               # Only render the subgraph from startseg to +500 or end,
+               # whichever is less.
+               $svgopts = { 'from' => $startseg };
+               $svgopts->{'to'} = $startseg + 550
+                       if $startseg + 550 < $collation->end->rank;
+       } elsif( exists $c->stash->{'textsegments'} ) {
+               # This is the unqualified load of a long tradition. We implicitly start 
+               # at zero, but go only as far as 550.
+               $svgopts = { 'to' => 550 };
+       }
+       my $svg_str = $collation->as_svg( $svgopts );
        $svg_str =~ s/\n//gs;
        $c->stash->{'svg_string'} = $svg_str;
        $c->stash->{'text_title'} = $tradition->name;
        $c->stash->{'template'} = 'relate.tt';
-
 }
 
 =head2 relationships
 
- GET $textid/relationships
+ GET relation/$textid/relationships
 
 Returns the list of relationships defined for this text.
 
- POST $textid/relationships { request }
+ POST relation/$textid/relationships { request }
  
 Attempts to define the requested relationship within the text. Returns 200 on
 success or 403 on error.
 
- DELETE $textid/relationships { request }
+ DELETE relation/$textid/relationships { request }
  
 
 =cut

diff --git a/stemmaweb/root/css/relationship.css b/stemmaweb/root/css/relationship.css
index bed28ee..ef19de0 100644 (file)
--- a/stemmaweb/root/css/relationship.css
+++ b/stemmaweb/root/css/relationship.css
@@ -32,6 +32,10 @@ body {
        height: 55px;
        padding-top: 40px;
 }
+.segment_guide {
+       padding-left: 30px;
+       padding-right: 30px;
+}
 h1.title a:link, h1.title a:visited, h1.title a:active {
        color: #666;
        font-weight: bold;

diff --git a/stemmaweb/root/js/relationship.js b/stemmaweb/root/js/relationship.js
index 7921b1d..d569c16 100644 (file)
--- a/stemmaweb/root/js/relationship.js
+++ b/stemmaweb/root/js/relationship.js
@@ -1,8 +1,13 @@
 function getTextPath() {
     var currpath = window.location.pathname
+    // Get rid of trailing slash
     if( currpath.lastIndexOf('/') == currpath.length - 1 ) { 
        currpath = currpath.slice( 0, currpath.length - 1) 
     };
+    // Get rid of query parameters
+    if( currpath.lastIndexOf('?') != -1 ) {
+       currpath = currpath.slice( 0, currpath.lastIndexOf('?') );
+    };
     var path_elements = currpath.split('/');
     var textid = path_elements.pop();
     var basepath = path_elements.join( '/' );
@@ -50,7 +55,7 @@ function svgEnlargementLoaded() {
     var transform = 'rotate(0) scale(' + scale + ') translate(4 ' + translate + ')';
     svg_g.setAttribute('transform', transform);
     //used to calculate min and max zoom level:
-    start_element_height = $("#svgenlargement .node title:contains('#START#')").siblings('ellipse')[0].getBBox().height;
+    start_element_height = $("#svgenlargement .node title:contains('START#')").siblings('ellipse')[0].getBBox().height;
     add_relations( function() { $('#loading_overlay').hide(); });
 }
 
@@ -63,7 +68,9 @@ function add_relations( callback_fn ) {
         function(data) {
             $.each(data, function( index, rel_info ) {
                 var type_index = $.inArray(rel_info.type, rel_types);
-                if( type_index != -1 ) {
+                var source_found = get_ellipse( rel_info.source );
+                var target_found = get_ellipse( rel_info.target );
+                if( type_index != -1 && source_found.size() && target_found.size() ) {
                     var relation = relation_manager.create( rel_info.source, rel_info.target, type_index );
                     relation.data( 'type', rel_info.type );
                     relation.data( 'scope', rel_info.scope );

diff --git a/stemmaweb/root/src/relate.tt b/stemmaweb/root/src/relate.tt
index 89ca08c..87e311c 100644 (file)
--- a/stemmaweb/root/src/relate.tt
+++ b/stemmaweb/root/src/relate.tt
@@ -16,6 +16,13 @@ $(function() {
                </div>
                <h1>Relationship mapper</h1>
                <h2>[% text_title %]</h2>
+               <div id="segmentation">
+[% FOREACH segment IN textsegments -%]
+                       <a href="[% c.uri_for( "/relation/$textid" ) %]?start=[% segment.start %]">
+                               <span class="segment_guide">[% segment.start %] – [% segment.end %]</span>
+                       </a>
+[% END -%]
+               </div>
        </div>
 
        <div id="enlargement_container">