Merge branch 'master' of github.com:tla/stemmaweb
[scpubgit/stemmaweb.git] / root / js / relationship.js
index 807b5d4..9782e82 100644 (file)
@@ -5,36 +5,12 @@ var start_element_height = 0;
 var reltypes = {};
 var readingdata = {};
 
-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( '/' );
-    var path_parts = [ basepath, textid ];
-    return path_parts;
-}
-
-function getRelativePath() {
-       var path_parts = getTextPath();
-       return path_parts[0];
-}
-
 function getTextURL( which ) {
-       var path_parts = getTextPath();
-       return path_parts[0] + '/' + path_parts[1] + '/' + which;
+       return basepath + textid + '/' + which;
 }
 
 function getReadingURL( reading_id ) {
-       var path_parts = getTextPath();
-       return path_parts[0] + '/' + path_parts[1] + '/reading/' + reading_id;
+       return basepath + textid + '/reading/' + reading_id;
 }
 
 // Make an XML ID into a valid selector
@@ -65,6 +41,14 @@ function node_dblclick_listener( evt ) {
        }
        $('#reading_normal_form').attr( 'size', nfboxsize )
        $('#reading_normal_form').val( normal_form );
+       if( editable ) {
+               // Fill in the witnesses for the de-collation box.
+               $('#reading_decollate_witnesses').empty();
+               $.each( reading_info['witnesses'], function( idx, wit ) {
+                       $('#reading_decollate_witnesses').append( $('<option/>').attr(
+                               'value', wit ).text( wit ) );
+               });
+       }
        // Now do the morphological properties.
        morphology_form( reading_info['lexemes'] );
        // and then open the dialog.
@@ -79,26 +63,31 @@ function toggle_checkbox( box, value ) {
 }
 
 function morphology_form ( lexlist ) {
-       $('#morphology').empty();
-       $.each( lexlist, function( idx, lex ) {
-               var morphoptions = [];
-               if( 'wordform_matchlist' in lex ) {
-                       $.each( lex['wordform_matchlist'], function( tdx, tag ) {
-                               var tagstr = stringify_wordform( tag );
-                               morphoptions.push( tagstr );
+       if( lexlist.length ) {
+               $('#morph_outer').show();
+               $('#morphology').empty();
+               $.each( lexlist, function( idx, lex ) {
+                       var morphoptions = [];
+                       if( 'wordform_matchlist' in lex ) {
+                               $.each( lex['wordform_matchlist'], function( tdx, tag ) {
+                                       var tagstr = stringify_wordform( tag );
+                                       morphoptions.push( tagstr );
+                               });
+                       }
+                       var formtag = 'morphology_' + idx;
+                       var formstr = '';
+                       if( 'form' in lex ) {
+                               formstr = stringify_wordform( lex['form'] );
+                       } 
+                       var form_morph_elements = morph_elements( 
+                               formtag, lex['string'], formstr, morphoptions );
+                       $.each( form_morph_elements, function( idx, el ) {
+                               $('#morphology').append( el );
                        });
-               }
-               var formtag = 'morphology_' + idx;
-               var formstr = '';
-               if( 'form' in lex ) {
-                       formstr = stringify_wordform( lex['form'] );
-               } 
-               var form_morph_elements = morph_elements( 
-                       formtag, lex['string'], formstr, morphoptions );
-               $.each( form_morph_elements, function( idx, el ) {
-                       $('#morphology').append( el );
                });
-       });
+       } else {
+               $('#morph_outer').hide();
+       }
 }
 
 function stringify_wordform ( tag ) {
@@ -136,11 +125,13 @@ function color_inactive ( el ) {
        // If the reading info has any non-disambiguated lexemes, color it yellow;
        // otherwise color it green.
        $(el).attr( {stroke:'green', fill:'#b3f36d'} );
-       $.each( reading_info['lexemes'], function ( idx, lex ) {
-               if( !lex['is_disambiguated'] || lex['is_disambiguated'] == 0 ) {
-                       $(el).attr( {stroke:'orange', fill:'#fee233'} );
-               }
-       });
+       if( reading_info ) {
+               $.each( reading_info['lexemes'], function ( idx, lex ) {
+                       if( !lex['is_disambiguated'] || lex['is_disambiguated'] == 0 ) {
+                               $(el).attr( {stroke:'orange', fill:'#fee233'} );
+                       }
+               });
+       }
 }
 
 function relemmatize () {
@@ -177,10 +168,11 @@ function svgEnlargementLoaded() {
        $("#loading_message").offset(
                { 'top': lo_height / 2 - $("#loading_message").height() / 2,
                  'left': lo_width / 2 - $("#loading_message").width() / 2 });
-    //Set viewbox widht and height to widht and height of $('#svgenlargement svg').
-    $('#update_workspace_button').data('locked', false);
-    $('#update_workspace_button').css('background-position', '0px 44px');
-    //This is essential to make sure zooming and panning works properly.
+    if( editable ) {
+       // Show the update toggle button.
+           $('#update_workspace_button').data('locked', false);
+       $('#update_workspace_button').css('background-position', '0px 44px');
+    }
        var rdgpath = getTextURL( 'readings' );
                $.getJSON( rdgpath, function( data ) {
                readingdata = data;
@@ -200,6 +192,8 @@ function svgEnlargementLoaded() {
           }
     }
 
+    //Set viewbox width and height to width and height of $('#svgenlargement svg').
+    //This is essential to make sure zooming and panning works properly.
     svg_root.viewBox.baseVal.width = graph_svg.attr( 'width' );
     svg_root.viewBox.baseVal.height = graph_svg.attr( 'height' );
     //Now set scale and translate so svg height is about 150px and vertically centered in viewbox.
@@ -215,35 +209,49 @@ function svgEnlargementLoaded() {
     //used to calculate min and max zoom level:
     start_element_height = $('#__START__').children('ellipse')[0].getBBox().height;
     add_relations( function() { $('#loading_overlay').hide(); });
+    
+    //initialize marquee
+    marquee = new Marquee();
+    
 }
 
 function add_relations( callback_fn ) {
-       var basepath = getRelativePath();
+       // Add the relationship types to the keymap list
+       $.each( relationship_types, function(index, typedef) {   
+                li_elm = $('<li class="key">').css( "border-color", 
+                       relation_manager.relation_colors[index] ).text(typedef.name);
+                li_elm.append( $('<div>').attr('class', 'key_tip_container').append(
+                       $('<div>').attr('class', 'key_tip').text(typedef.description) ) );
+                $('#keymaplist').append( li_elm ); 
+       });
+       // Now fetch the relationships themselves and add them to the graph
+       var rel_types = $.map( relationship_types, function(t) { return t.name });
+       // Save this list of names to the outer element data so that the relationship
+       // factory can access it
+       $('#keymap').data('relations', rel_types);
        var textrelpath = getTextURL( 'relationships' );
-    $.getJSON( basepath + '/definitions', function(data) {
-        var rel_types = data.types.sort();
-        $.getJSON( textrelpath,
-        function(data) {
-            $.each(data, function( index, rel_info ) {
-                var type_index = $.inArray(rel_info.type, rel_types);
-                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 );
-                    relation.data( 'note', rel_info.note );
-                    var node_obj = get_node_obj(rel_info.source);
-                    node_obj.set_draggable( false );
-                    node_obj.ellipse.data( 'node_obj', null );
-                    node_obj = get_node_obj(rel_info.target);
-                    node_obj.set_draggable( false );
-                    node_obj.ellipse.data( 'node_obj', null );
-                }
-            });
-            callback_fn.call();
-        });
-    });
+       $.getJSON( textrelpath, function(data) {
+               $.each(data, function( index, rel_info ) {
+                       var type_index = $.inArray(rel_info.type, rel_types);
+                       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 );
+                               relation.data( 'note', rel_info.note );
+                               if( editable ) {
+                                       var node_obj = get_node_obj(rel_info.source);
+                                       node_obj.set_draggable( false );
+                                       node_obj.ellipse.data( 'node_obj', null );
+                                       node_obj = get_node_obj(rel_info.target);
+                                       node_obj.set_draggable( false );
+                                       node_obj.ellipse.data( 'node_obj', null );
+                               }
+                       }
+               });
+               callback_fn.call();
+       });
 }
 
 function get_ellipse( node_id ) {
@@ -273,7 +281,7 @@ function node_obj(ellipse) {
   }
   
   this.set_draggable = function( draggable ) {
-    if( draggable ) {
+    if( draggable && editable ) {
       $(self.ellipse).attr( {stroke:'black', fill:'#fff'} );
       $(self.ellipse).parent().mousedown( this.mousedown_listener );
       $(self.ellipse).parent().hover( this.enter_node, this.leave_node ); 
@@ -517,11 +525,11 @@ function relation_factory() {
         }
     }
     this.showinfo = function(relation) {
-       var htmlstr = 'type: ' + relation.data( 'type' ) + '<br/>scope: ' + relation.data( 'scope' );
+       $('#delete_relation_type').text( relation.data('type') );
+       $('#delete_relation_scope').text( relation.data('scope') );
        if( relation.data( 'note' ) ) {
-               htmlstr = htmlstr + '<br/>note: ' + relation.data( 'note' );
+               $('#delete_relation_note').text('note: ' + relation.data( 'note' ) );
        }
-        $('#delete-form-text').html( htmlstr );
         var points = relation.children('path').attr('d').slice(1).replace('C',' ').split(' ');
         var xs = parseFloat( points[0].split(',')[0] );
         var xe = parseFloat( points[1].split(',')[0] );
@@ -538,6 +546,9 @@ function relation_factory() {
         dialog_aria.offset({ left: nx, top: ny });
     }
     this.remove = function( relation_id ) {
+       if( !editable ) {
+               return;
+       }
         var relation = $( jq( relation_id ) );
         relation.remove();
     }
@@ -576,29 +587,99 @@ function draw_relation( source_id, target_id, relation_color ) {
     return relation_element;
 }
 
+function Marquee() {
+    
+    var self = this;
+    
+    this.enlargementOffset = $('#svgenlargement').offset();
+    this.svg_rect = $('#svgenlargement svg').svg('get');
+
+    this.show = function( event ) {
+        // TODO: uncolor possible selected
+        // TODO: unless SHIFT?
+        p = svg_root.createSVGPoint();
+        p.x = event.clientX - self.enlargementOffset.left;
+        p.y = event.clientY - self.enlargementOffset.top;
+        // NB: I think next line is officially needed, it's only 
+        // coincidentally that viewport and svg scale 1 to 1 initially
+        // and therefor we don't need a transform? 
+        // p.matrixTransform( svg_root_element.getCTM().inverse() );
+        self.svg_rect.rect( p.x, p.y, 0, 0, { fill: 'black', 'fill-opacity': '0.1', stroke: 'black', 'stroke-dasharray': '4,2', strokeWidth: '0.02em', id: 'marquee' } );
+    };
+
+    this.expand = function( event ) {
+        var rect = $('#marquee');
+        if( rect.length != 0 ) {
+            var pX = (event.clientX - self.enlargementOffset.left) - rect.attr("x");;
+            var pY = (event.clientY - self.enlargementOffset.top) - rect.attr("y");;
+            rect.attr("width", pX);
+            rect.attr("height", pY);
+        }
+    };
+    
+    this.hide = function() {
+        var rect = $('#marquee');
+        if( rect.length != 0 ) {
+            var left = $('#marquee').offset().left;
+            var top = $('#marquee').offset().top;
+            var right = left + parseInt( $('#marquee').attr( 'width' ) );
+            var bottom = top + parseInt( $('#marquee').attr( 'height' ) );
+            var tf = svg_root_element.getScreenCTM().inverse(); 
+            var p = svg_root.createSVGPoint();
+            p.x=left;
+            p.y=top;
+            var cx_min = p.matrixTransform(tf).x;
+            var cy_min = p.matrixTransform(tf).y;
+            p.x=right;
+            p.y=bottom;
+            var cx_max = p.matrixTransform(tf).x;
+            var cy_max = p.matrixTransform(tf).y;
+            $('#svgenlargement ellipse').each( function( index ) {
+                var cx = parseInt( $(this).attr('cx') );
+                var cy = parseInt( $(this).attr('cy') );
+                if( cx > cx_min && cx < cx_max) {
+                    if( cy > cy_min && cy < cy_max) {
+                        // we actually heve no real 'selected' state for nodes, except coloring
+                        $(this).attr( 'fill', '#ffccff' );
+                    }
+                }
+            });
+            // select here
+            self.svg_rect.remove( $('#marquee') );
+        }
+    };
+    
+}
+
 
 $(document).ready(function () {
     
   timer = null;
   relation_manager = new relation_factory();
-  $('#update_workspace_button').data('locked', false);
   
+  $('#update_workspace_button').data('locked', false);
+                
   $('#enlargement').mousedown(function (event) {
     $(this)
         .data('down', true)
         .data('x', event.clientX)
         .data('y', event.clientY)
         .data('scrollLeft', this.scrollLeft)
-        stateTf = svg_root_element.getCTM().inverse();
-        var p = svg_root.createSVGPoint();
-        p.x = event.clientX;
-        p.y = event.clientY;
-        stateOrigin = p.matrixTransform(stateTf);
-        event.returnValue = false;
-        event.preventDefault();
-        return false;
+    stateTf = svg_root_element.getCTM().inverse();
+    var p = svg_root.createSVGPoint();
+    p.x = event.clientX;
+    p.y = event.clientY;
+    stateOrigin = p.matrixTransform(stateTf);
+
+    // Activate marquee if in interaction mode
+    if( $('#update_workspace_button').data('locked') == true ) { marquee.show( event ) };
+        
+    event.returnValue = false;
+    event.preventDefault();
+    return false;
   }).mouseup(function (event) {
-        $(this).data('down', false);
+    marquee.hide(); 
+    $(this).data('down', false);
   }).mousemove(function (event) {
     if( timer != null ) { clearTimeout(timer); } 
     if ( ($(this).data('down') == true) && ($('#update_workspace_button').data('locked') == false) ) {
@@ -610,6 +691,7 @@ $(document).ready(function () {
         var s = "matrix(" + matrix.a + "," + matrix.b + "," + matrix.c + "," + matrix.d + "," + matrix.e + "," + matrix.f + ")";
         svg_root_element.setAttribute("transform", s);
     }
+    marquee.expand( event ); 
     event.returnValue = false;
     event.preventDefault();
   }).mousewheel(function (event, delta) {
@@ -640,97 +722,104 @@ $(document).ready(function () {
     'cursor' : '-moz-grab'
   });
   
-
-  $( "#dialog-form" ).dialog({
-    autoOpen: false,
-    height: 270,
-    width: 290,
-    modal: true,
-    buttons: {
-      "Ok": function( evt ) {
-       $(evt.target).button("disable");
-        $('#status').empty();
-        form_values = $('#collapse_node_form').serialize();
-        ncpath = getTextURL( 'relationships' );
-        var jqjson = $.post( ncpath, form_values, function(data) {
-            $.each( data, function(item, source_target) { 
-               var source_found = get_ellipse( source_target[0] );
-               var target_found = get_ellipse( source_target[1] );
-               if( source_found.size() && target_found.size() ) {
-                    var relation = relation_manager.create( source_target[0], source_target[1], $('#rel_type')[0].selectedIndex-1 );
-                                       relation.data( 'type', $('#rel_type :selected').text()  );
+  
+  if( editable ) {
+       $( "#dialog-form" ).dialog({
+       autoOpen: false,
+       height: 270,
+       width: 290,
+       modal: true,
+       buttons: {
+         "Ok": function( evt ) {
+               $(evt.target).button("disable");
+               $('#status').empty();
+               form_values = $('#collapse_node_form').serialize();
+               ncpath = getTextURL( 'relationships' );
+               var jqjson = $.post( ncpath, form_values, function(data) {
+                       $.each( data, function(item, source_target) { 
+                               var source_found = get_ellipse( source_target[0] );
+                               var target_found = get_ellipse( source_target[1] );
+                               var relation_found = $.inArray( source_target[2], $('#keymap').data('relations') );
+                               if( source_found.size() && target_found.size() && relation_found > -1 ) {
+                                       var relation = relation_manager.create( source_target[0], source_target[1], relation_found );
+                                       relation.data( 'type', source_target[2]  );
                                        relation.data( 'scope', $('#scope :selected').text()  );
                                        relation.data( 'note', $('#note').val()  );
                                        relation_manager.toggle_active( relation.attr('id') );
                                }
-                               $(evt.target).button("enable");
-           });
-            $( "#dialog-form" ).dialog( "close" );
-        }, 'json' );
-      },
-      Cancel: function() {
-          $( this ).dialog( "close" );
-      }
-    },
-    create: function(event, ui) { 
-        $(this).data( 'relation_drawn', false );
-        //TODO? Err handling?
-               var basepath = getRelativePath();
-        var jqjson = $.getJSON( basepath + '/definitions', function(data) {
-            var types = data.types.sort();
-            $.each( types, function(index, value) {   
-                 $('#rel_type').append( $('<option />').attr( "value", value ).text(value) ); 
-                 $('#keymaplist').append( $('<li>').css( "border-color", relation_manager.relation_colors[index] ).text(value) ); 
-            });
-            var scopes = data.scopes;
-            $.each( scopes, function(index, value) {   
-                 $('#scope').append( $('<option />').attr( "value", value ).text(value) ); 
-            });
-        });        
-    },
-    open: function() {
-        relation_manager.create_temporary( $('#source_node_id').val(), $('#target_node_id').val() );
-        $(".ui-widget-overlay").css("background", "none");
-        $("#dialog_overlay").show();
-        $("#dialog_overlay").height( $("#enlargement_container").height() );
-        $("#dialog_overlay").width( $("#enlargement_container").innerWidth() );
-        $("#dialog_overlay").offset( $("#enlargement_container").offset() );
-    },
-    close: function() {
-        relation_manager.remove_temporary();
-        $( '#status' ).empty();
-        $("#dialog_overlay").hide();
-    }
-  }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
-      if( ajaxSettings.url == getTextURL('relationships') 
-       && ajaxSettings.type == 'POST' && jqXHR.status == 403 ) {
-         var errobj = jQuery.parseJSON( jqXHR.responseText );
-          $('#status').append( '<p class="error">Error: ' + errobj.error + '</br>The relationship cannot be made.</p>' );
-                 $(event.target).parent().find('.ui-button').button("enable");
-      }
-  } );
+                               $(evt.target).button("enable");
+                  });
+                       $( "#dialog-form" ).dialog( "close" );
+               }, 'json' );
+         },
+         Cancel: function() {
+                 $( this ).dialog( "close" );
+         }
+       },
+       create: function(event, ui) { 
+               $(this).data( 'relation_drawn', false );
+               $('#rel_type').data( 'changed_after_open', false );
+               $.each( relationship_types, function(index, typedef) {   
+                        $('#rel_type').append( $('<option />').attr( "value", typedef.name ).text(typedef.name) ); 
+               });
+               $.each( relationship_scopes, function(index, value) {   
+                        $('#scope').append( $('<option />').attr( "value", value ).text(value) ); 
+               });
+               // Handler to clear the annotation field, the first time the relationship is
+               // changed after opening the form.
+               $('#rel_type').change( function () {
+                       if( !$(this).data( 'changed_after_open' ) ) {
+                               $('#note').val('');
+                       }
+                       $(this).data( 'changed_after_open', true );
+               });
+       },
+       open: function() {
+               relation_manager.create_temporary( $('#source_node_id').val(), $('#target_node_id').val() );
+               $(".ui-widget-overlay").css("background", "none");
+               $("#dialog_overlay").show();
+               $("#dialog_overlay").height( $("#enlargement_container").height() );
+               $("#dialog_overlay").width( $("#enlargement_container").innerWidth() );
+               $("#dialog_overlay").offset( $("#enlargement_container").offset() );
+               $('#rel_type').data( 'changed_after_open', false );
+       },
+       close: function() {
+               relation_manager.remove_temporary();
+               $( '#status' ).empty();
+               $("#dialog_overlay").hide();
+       }
+       }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
+               if( ajaxSettings.url == getTextURL('relationships') 
+                       && ajaxSettings.type == 'POST' && jqXHR.status == 403 ) {
+                       var error;
+                       if( jqXHR.responseText.indexOf('do not have permission to modify') > -1 ) {
+                               error = 'You are not authorized to modify this tradition. (Try logging in again?)';
+                       } else {
+                               try {
+                                       var errobj = jQuery.parseJSON( jqXHR.responseText );
+                                       error = errobj.error + '</br>The relationship cannot be made.</p>';
+                               } catch(e) {
+                                       error = jqXHR.responseText;
+                               }
+                       }
+                       $('#status').append( '<p class="error">Error: ' + error );
+               }
+               $(event.target).parent().find('.ui-button').button("enable");
+       } );
+  }
 
+  var deletion_buttonset = {
+        cancel: function() { $( this ).dialog( "close" ); },
+        global: function () { delete_relation( true ); },
+        delete: function() { delete_relation( false ); }
+  };   
   $( "#delete-form" ).dialog({
     autoOpen: false,
     height: 135,
-    width: 160,
+    width: 250,
     modal: false,
-    buttons: {
-        Cancel: function() {
-            $( this ).dialog( "close" );
-        },
-        Delete: function() {
-          form_values = $('#delete_relation_form').serialize();
-          ncpath = getTextURL( 'relationships' );
-          var jqjson = $.ajax({ url: ncpath, data: form_values, success: function(data) {
-              $.each( data, function(item, source_target) { 
-                  relation_manager.remove( get_relation_id( source_target[0], source_target[1] ) );
-              });
-              $( "#delete-form" ).dialog( "close" );
-          }, dataType: 'json', type: 'DELETE' });
-        }
-    },
     create: function(event, ui) {
+       // TODO What is this logic doing?
         var buttonset = $(this).parent().find( '.ui-dialog-buttonset' ).css( 'width', '100%' );
         buttonset.find( "button:contains('Cancel')" ).css( 'float', 'right' );
         var dialog_aria = $("div[aria-labelledby='ui-dialog-title-delete-form']");  
@@ -742,80 +831,155 @@ $(document).ready(function () {
         })
     },
     open: function() {
+       if( !editable ) {
+               $( this ).dialog( "option", "buttons", 
+                       [{ text: "OK", click: deletion_buttonset['cancel'] }] );
+       } else if( $('#delete_relation_scope').text() === 'local' ) {
+               $( this ).dialog( "option", "width", 160 );
+               $( this ).dialog( "option", "buttons",
+                       [{ text: "Delete", click: deletion_buttonset['delete'] },
+                        { text: "Cancel", click: deletion_buttonset['cancel'] }] );
+       } else {
+               $( this ).dialog( "option", "width", 200 );
+               $( this ).dialog( "option", "buttons",
+                       [{ text: "Delete", click: deletion_buttonset['delete'] },
+                        { text: "Delete all", click: deletion_buttonset['global'] },
+                        { text: "Cancel", click: deletion_buttonset['cancel'] }] );
+               }       
+                       
         mouseWait = setTimeout( function() { $("#delete-form").dialog( "close" ) }, 2000 );
     },
-    close: function() {
-    }
+    close: function() {}
   });
 
-  // function for reading form dialog should go here; for now hide the element
-  $('#reading-form').dialog({
-       autoOpen: false,
-       height: 400,
-       width: 600,
-       modal: true,
-       buttons: {
-               Cancel: function() {
-                       $( this ).dialog( "close" );
-               },
-               Update: function( evt ) {
-                       // Disable the button
-                       $(evt.target).button("disable");
-                       $('#reading_status').empty();
-                       var reading_id = $('#reading_id').val()
-                       form_values = {
-                               'id' : reading_id,
-                               'is_nonsense': $('#reading_is_nonsense').is(':checked'),
-                               'grammar_invalid': $('#reading_grammar_invalid').is(':checked'),
-                               'normal_form': $('#reading_normal_form').val() };
-                       // Add the morphology values
-                       $('.reading_morphology').each( function() {
-                               var rmid = $(this).attr('id');
-                               rmid = rmid.substring(8);
-                               form_values[rmid] = $(this).val();
-                       });
-                       // Make the JSON call
-                       ncpath = getReadingURL( reading_id );
-                       var reading_element = readingdata[reading_id];
-                       // $(':button :contains("Update")').attr("disabled", true);
-                       var jqjson = $.post( ncpath, form_values, function(data) {
-                               $.each( data, function(key, value) { 
-                                       reading_element[key] = value;
+  // Helpers for relationship deletion
+  
+  function delete_relation( scopewide ) {
+         form_values = $('#delete_relation_form').serialize();
+         if( scopewide ) {
+               form_values += "&scopewide=true";
+         }
+         ncpath = getTextURL( 'relationships' );
+         var jqjson = $.ajax({ url: ncpath, data: form_values, success: function(data) {
+                 $.each( data, function(item, source_target) { 
+                         relation_manager.remove( get_relation_id( source_target[0], source_target[1] ) );
+                 });
+                 $( "#delete-form" ).dialog( "close" );
+         }, dataType: 'json', type: 'DELETE' });
+  }
+  
+  function toggle_relation_active( node_id ) {
+      $('#svgenlargement .relation').find( "title:contains('" + node_id +  "')" ).each( function(index) {
+          matchid = new RegExp( "^" + node_id );
+          if( $(this).text().match( matchid ) != null ) {
+                 var relation_id = $(this).parent().attr('id');
+              relation_manager.toggle_active( relation_id );
+          };
+      });
+  }
+
+  // function for reading form dialog should go here; 
+  // just hide the element for now if we don't have morphology
+  if( can_morphologize ) {
+         if( editable ) {
+                 $('#reading_decollate_witnesses').multiselect();
+         } else {
+                 $('#decollation').hide();
+         }
+         $('#reading-form').dialog({
+               autoOpen: false,
+               // height: 400,
+               width: 450,
+               modal: true,
+               buttons: {
+                       Cancel: function() {
+                               $( this ).dialog( "close" );
+                       },
+                       Update: function( evt ) {
+                               // Disable the button
+                               $(evt.target).button("disable");
+                               $('#reading_status').empty();
+                               var reading_id = $('#reading_id').val()
+                               form_values = {
+                                       'id' : reading_id,
+                                       'is_nonsense': $('#reading_is_nonsense').is(':checked'),
+                                       'grammar_invalid': $('#reading_grammar_invalid').is(':checked'),
+                                       'normal_form': $('#reading_normal_form').val() };
+                               // Add the morphology values
+                               $('.reading_morphology').each( function() {
+                                       if( $(this).val() != '(Click to select)' ) {
+                                               var rmid = $(this).attr('id');
+                                               rmid = rmid.substring(8);
+                                               form_values[rmid] = $(this).val();
+                                       }
+                               });
+                               // Make the JSON call
+                               ncpath = getReadingURL( reading_id );
+                               var reading_element = readingdata[reading_id];
+                               // $(':button :contains("Update")').attr("disabled", true);
+                               var jqjson = $.post( ncpath, form_values, function(data) {
+                                       $.each( data, function(key, value) { 
+                                               reading_element[key] = value;
+                                       });
+                                       if( $('#update_workspace_button').data('locked') == false ) {
+                                               color_inactive( get_ellipse( reading_id ) );
+                                       }
+                                       $(evt.target).button("enable");
+                                       $( "#reading-form" ).dialog( "close" );
                                });
-                               if( $('#update_workspace_button').data('locked') == false ) {
-                                       color_inactive( get_ellipse( reading_id ) );
+                               // Re-color the node if necessary
+                               return false;
+                       }
+               },
+               create: function() {
+                       if( !editable ) {
+                               // Get rid of the disallowed editing UI bits
+                               $( this ).dialog( "option", "buttons", 
+                                       [{ text: "OK", click: function() { $( this ).dialog( "close" ); }}] );
+                               $('#reading_relemmatize').hide();
+                       }
+               },
+               open: function() {
+                       $(".ui-widget-overlay").css("background", "none");
+                       $('#reading_decollate_witnesses').multiselect("refresh");
+                       $('#reading_decollate_witnesses').multiselect("uncheckAll");
+                       $("#dialog_overlay").show();
+                       $('#reading_status').empty();
+                       $("#dialog_overlay").height( $("#enlargement_container").height() );
+                       $("#dialog_overlay").width( $("#enlargement_container").innerWidth() );
+                       $("#dialog_overlay").offset( $("#enlargement_container").offset() );
+                       $("#reading-form").parent().find('.ui-button').button("enable");
+               },
+               close: function() {
+                       $("#dialog_overlay").hide();
+               }
+         }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
+               if( ajaxSettings.url.lastIndexOf( getReadingURL('') ) > -1
+                       && ajaxSettings.type == 'POST' && jqXHR.status == 403 ) {
+                       var error;
+                       if( jqXHR.responseText.indexOf('do not have permission to modify') > -1 ) {
+                               error = 'You are not authorized to modify this tradition. (Try logging in again?)';
+                       } else {
+                               try {
+                                       var errobj = jQuery.parseJSON( jqXHR.responseText );
+                                       error = errobj.error + '</br>The relationship cannot be made.</p>';
+                               } catch(e) {
+                                       error = jqXHR.responseText;
                                }
-                               $(evt.target).button("enable");
-                               $( "#reading-form" ).dialog( "close" );
-                       });
-                       // Re-color the node if necessary
-                       return false;
-               }
-       },
-       create: function() {
-       },
-       open: function() {
-        $(".ui-widget-overlay").css("background", "none");
-        $("#dialog_overlay").show();
-        $('#reading_status').empty();
-        $("#dialog_overlay").height( $("#enlargement_container").height() );
-        $("#dialog_overlay").width( $("#enlargement_container").innerWidth() );
-        $("#dialog_overlay").offset( $("#enlargement_container").offset() );
-       },
-       close: function() {
-               $("#dialog_overlay").hide();
+                       }
+                       $('#status').append( '<p class="error">Error: ' + error );
+               }
+               $(event.target).parent().find('.ui-button').button("enable");
+         });
+       } else {
+               $('#reading-form').hide();
        }
-  }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
-      if( ajaxSettings.url.lastIndexOf( getReadingURL('') ) > -1
-       && ajaxSettings.type == 'POST' && jqXHR.status == 403 ) {
-         var errobj = jQuery.parseJSON( jqXHR.responseText );
-          $('#reading_status').append( '<p class="error">Error: ' + errobj.error + '</p>' );
-                 $(event.target).parent().find('.ui-button').button("enable");
-      }
-  });
   
 
   $('#update_workspace_button').click( function() {
+        if( !editable ) {
+               return;
+        }
      var svg_enlargement = $('#svgenlargement').svg().svg('get').root();
      mouse_scale = svg_root_element.getScreenCTM().a;
      if( $(this).data('locked') == true ) {
@@ -857,6 +1021,13 @@ $(document).ready(function () {
          $(this).data('locked', true );
      }
   });
+
+  if( !editable ) {  
+    // Hide the unused elements
+    $('#dialog-form').hide();
+    $('#update_workspace_button').hide();
+  }
+
   
   $('.helptag').popupWindow({ 
          height:500, 
@@ -866,17 +1037,6 @@ $(document).ready(function () {
          scrollbars:1 
   }); 
 
-  
-  function toggle_relation_active( node_id ) {
-      $('#svgenlargement .relation').find( "title:contains('" + node_id +  "')" ).each( function(index) {
-          matchid = new RegExp( "^" + node_id );
-          if( $(this).text().match( matchid ) != null ) {
-                 var relation_id = $(this).parent().attr('id');
-              relation_manager.toggle_active( relation_id );
-          };
-      });
-  }
-
   expandFillPageClients();
   $(window).resize(function() {
     expandFillPageClients();
@@ -903,6 +1063,7 @@ function loadSVG(svgData) {
 }
 
 
+
 /*     OS Gadget stuff
 
 function svg_select_callback(topic, data, subscriberData) {