root/js/componentload.js

   1 // Global state variables
   2 var selectedTextID;
   3 var selectedTextInfo;
   4 var selectedTextEditable;
   5 var selectedStemmaID = -1;
   6 var stemmata = [];
   7
   8 // Load the names of the appropriate traditions into the directory div.
   9 function refreshDirectory () {
  10         var lmesg = $('#loading_message').clone();
  11         $('#directory').empty().append( lmesg.contents() );
  12     $('#directory').load( _get_url(["directory"]),
  13         function(response, status, xhr) {
  14                         if (status == "error") {
  15                                 var msg = "An error occurred: ";
  16                                 $("#directory").html(msg + xhr.status + " " + xhr.statusText);
  17                         } else {
  18                                 if( textOnLoad != "" ) {
  19                                         // Call the click callback for the relevant text, if it is
  20                                         // in the page.
  21                                         $('#'+textOnLoad).click();
  22                                         textOnLoad = "";
  23                                 }
  24                         }
  25                 }
  26         );
  27 }
  28
  29 // Load a tradition with its information and stemmata into the tradition
  30 // view pane. Calls load_textinfo.
  31 function loadTradition( textid, textname, editable ) {
  32         selectedTextID = textid;
  33         selectedTextEditable = editable;
  34     // First insert the placeholder image and register an error handler
  35     $('#textinfo_load_status').empty();
  36     $('#stemma_graph').empty();
  37     $('#textinfo_waitbox').show();
  38     $('#textinfo_container').hide().ajaxError(
  39         function(event, jqXHR, ajaxSettings, thrownError) {
  40         if( ajaxSettings.url.indexOf( 'textinfo' ) > -1 && ajaxSettings.type == 'GET'  ) {
  41                         $('#textinfo_waitbox').hide();
  42                         $('#textinfo_container').show();
  43                         display_error( jqXHR, $("#textinfo_load_status") );
  44         }
  45     });
  46
  47     // Hide the functionality that is irrelevant
  48     if( editable ) {
  49         $('#open_stemma_add').show();
  50         $('#open_textinfo_edit').show();
  51         $('#relatebutton_label').text('View collation and edit relationships');
  52     } else {
  53         $('#open_stemma_add').hide();
  54         $('#open_stemweb_ui').hide();
  55         $('#query_stemweb_ui').hide();
  56         $('#open_textinfo_edit').hide();
  57         $('#relatebutton_label').text('View collation and relationships');
  58     }
  59
  60     // Then get and load the actual content.
  61     // TODO: scale #stemma_graph both horizontally and vertically
  62     // TODO: load svgs from SVG.Jquery (to make scaling react in Safari)
  63     $.getJSON( _get_url([ "textinfo", textid ]), function (textdata) {
  64         // Add the scalar data
  65         selectedTextInfo = textdata;
  66         load_textinfo();
  67         // Add the stemma(ta)
  68         stemmata = textdata.stemmata;
  69         if( stemmata.length ) {
  70                 selectedStemmaID = 0;
  71         } else {
  72                 selectedStemmaID = -1;
  73                 }
  74                 load_stemma( selectedStemmaID );
  75         // Set up the relationship mapper button
  76                 $('#run_relater').attr( 'action', _get_url([ "relation", textid ]) );
  77                 // Set up the download button
  78                 $('#dl_tradition').attr( 'href', _get_url([ "download", textid ]) );
  79                 $('#dl_tradition').attr( 'download', selectedTextInfo.name + '.xml' );
  80         });
  81 }
  82
  83 // Load the metadata about a tradition into the appropriate div.
  84 function load_textinfo() {
  85         $('#textinfo_waitbox').hide();
  86         $('#textinfo_load_status').empty();
  87         $('#textinfo_container').show();
  88         $('.texttitle').empty().append( selectedTextInfo.name );
  89         // Witnesses
  90         $('#witness_num').empty().append( selectedTextInfo.witnesses.size );
  91         $('#witness_list').empty().append( selectedTextInfo.witnesses.join( ', ' ) );
  92         // Who the owner is
  93         $('#owner_id').empty().append('no one');
  94         if( selectedTextInfo.owner ) {
  95                 var owneremail = selectedTextInfo.owner;
  96                 var chop = owneremail.indexOf( '@' );
  97                 if( chop > -1 ) {
  98                         owneremail = owneremail.substr( 0, chop + 1 ) + '...';
  99                 }
 100                 $('#owner_id').empty().append( owneremail );
 101         }
 102         // Whether or not it is public
 103         $('#not_public').empty();
 104         if( selectedTextInfo['public'] == false ) {
 105                 $('#not_public').append('NOT ');
 106         }
 107         // What language setting it has, if any
 108         $('#marked_language').empty().append('no language set');
 109         if( selectedTextInfo.language && selectedTextInfo.language != 'Default' ) {
 110                 $('#marked_language').empty().append( selectedTextInfo.language );
 111         }
 112 }
 113
 114 // Enable / disable the appropriate buttons for paging through the stemma.
 115 function show_stemmapager () {
 116       $('.pager_left_button').unbind('click').addClass( 'greyed_out' );
 117       $('.pager_right_button').unbind('click').addClass( 'greyed_out' );
 118       if( selectedStemmaID > 0 ) {
 119               $('.pager_left_button').click( function () {
 120                       load_stemma( selectedStemmaID - 1, selectedTextEditable );
 121               }).removeClass( 'greyed_out' );
 122       }
 123       if( selectedStemmaID + 1 < stemmata.length ) {
 124               $('.pager_right_button').click( function () {
 125                       load_stemma( selectedStemmaID + 1, selectedTextEditable );
 126               }).removeClass( 'greyed_out' );
 127       }
 128 }
 129
 130 // Load a given stemma SVG into the stemmagraph box.
 131 function load_stemma( idx ) {
 132         // Load the stemma at idx
 133         selectedStemmaID = idx;
 134         show_stemmapager( selectedTextEditable );
 135         $('#open_stemma_edit').hide();
 136         $('#run_stexaminer').hide();
 137         $('#stemma_identifier').empty();
 138         // Add the relevant Stemweb functionality
 139         if( selectedTextEditable ) {
 140                 if( selectedTextInfo.stemweb_jobid == 0 ) {
 141                         $('#open_stemweb_ui').show();
 142                         $('#query_stemweb_ui').hide();
 143                 } else {
 144                         $('#query_stemweb_ui').show();
 145                         $('#open_stemweb_ui').hide();
 146                 }
 147         }
 148         if( idx > -1 ) {
 149                 // Load the stemma and its properties
 150                 var stemmadata = stemmata[idx];
 151                 if( selectedTextEditable ) {
 152                         $('#open_stemma_edit').show();
 153                 }
 154                 if( stemmadata.directed ) {
 155                         // Stexaminer submit action
 156                         var stexpath = _get_url([ "stexaminer", selectedTextID, idx ]);
 157                         $('#run_stexaminer').attr( 'action', stexpath );
 158                         $('#run_stexaminer').show();
 159                 }
 160                 loadSVG( stemmadata.svg );
 161                 $('#stemma_identifier').text( stemmadata.name );
 162         setTimeout( 'start_element_height = $("#stemma_graph .node")[0].getBBox().height;', 500 );
 163         }
 164 }
 165
 166 function query_stemweb_progress() {
 167         var requrl = _get_url([ "stemweb", "query", selectedTextInfo.stemweb_jobid ]);
 168         $.getJSON( requrl, function (data) {
 169                 // Look for a status message, either success, running, or notfound.
 170                 if( data.status === 'success' ) {
 171                         // Add the new stemmata to the textinfo and tell the user.
 172                         selectedTextInfo.stemweb_jobid = 0;
 173                         if( data.stemmata.length > 0 ) {
 174                                 stemmata = stemmata.concat( data.stemmata );
 175                                 if( selectedStemmaID == -1 ) {
 176                                         // We have a stemma for the first time; load the first one.
 177                                         load_stemma( 0, true );
 178                                 } else {
 179                                         // Move to the index of the first added stemma.
 180                                         var newIdx = stemmata.length - data.stemmata.length;
 181                                         load_stemma( newIdx, true );
 182                                 }
 183                                 alert( 'You have one or more new stemmata!' );
 184                         } else {
 185                                 alert( 'Stemweb run finished with no stemmata...huh?!' );
 186                         }
 187                 } else if( data.status === 'running' ) {
 188                         // Just tell the user.
 189                         alert( 'Your Stemweb query is still running!' );
 190                 } else if( data.status === 'notfound' ) {
 191                         // Ask the user to refresh, for now.
 192                         alert( 'Your Stemweb query probably finished and reported back. Please reload to check.' );
 193                 }
 194         });
 195 }
 196
 197 // Load the SVG we are given
 198 function loadSVG(svgData) {
 199         var svgElement = $('#stemma_graph');
 200
 201         $(svgElement).svg('destroy');
 202
 203         $(svgElement).svg({
 204                 loadURL: svgData,
 205                 onLoad : function () {
 206                         var theSVG = svgElement.find('svg');
 207                         var svgoffset = theSVG.offset();
 208                         var browseroffset = 1;
 209                         // Firefox needs a different offset, stupidly enough
 210                         if( navigator.userAgent.indexOf('Firefox') > -1 ) {
 211                                 browseroffset = 3; // works for tall images
 212                                 // ...but if the SVG is wider than it is tall, Firefox treats
 213                                 // the top as being the top of the graph, loaded into the middle
 214                                 // of the canvas, but then the margin at the top of the canvas
 215                                 // extends upward. So we have to find the actual top of the canvas
 216                                 // and correct for *that* instead.
 217                                 var vbdim = svgElement.svg().svg('get').root().viewBox.baseVal;
 218                                 if( vbdim.height < vbdim.width ) {
 219                                         var vbscale = svgElement.width() / vbdim.width;
 220                                         var vbrealheight = vbdim.height * vbscale;
 221                                         browseroffset = 3 + ( svgElement.height() - vbrealheight ) / 2;
 222                                 }
 223                         }
 224                         var topoffset = theSVG.position().top - svgElement.position().top - browseroffset;
 225                         theSVG.offset({ top: svgoffset.top - topoffset, left: svgoffset.left });
 226                         set_stemma_interactive( theSVG );
 227                 }
 228         });
 229 }
 230
 231 function set_stemma_interactive( svg_element ) {
 232         if( selectedTextEditable ) {
 233                 $( "#root_tree_dialog_button_ok" ).click( function() {
 234                         var requrl = _get_url([ "stemmaroot", selectedTextID, selectedStemmaID ]);
 235                         var targetnode = $('#root_tree_dialog').data( 'selectedNode' );
 236                         $.post( requrl, { root: targetnode }, function (data) {
 237                                 // Reload the new stemma
 238                                 stemmata[selectedStemmaID] = data;
 239                                 load_stemma( selectedStemmaID );
 240                                 // Put away the dialog
 241                                 $('#root_tree_dialog').data( 'selectedNode', null ).hide();
 242                         } );
 243                 } ).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
 244                         if( ajaxSettings.url.indexOf( 'stemmaroot' ) > -1
 245                                 && ajaxSettings.type == 'POST' ) {
 246                                 display_error( jqXHR, $("#stemma_load_status") );
 247                         }
 248                 } );
 249                 // TODO Clear error at some appropriate point
 250                 $.each( $( 'ellipse', svg_element ), function(index) {
 251                         var ellipse = $(this);
 252                         var g = ellipse.parent( 'g' );
 253                         g.click( function(evt) {
 254                                 if( typeof root_tree_dialog_timeout !== 'undefined' ) { clearTimeout( root_tree_dialog_timeout ) };
 255                                 g.unbind( 'mouseleave' );
 256                                 var dialog = $( '#root_tree_dialog' );
 257                                 // Note which node triggered the dialog
 258                                 dialog.data( 'selectedNode', g.attr('id') );
 259                                 // Position the dialog
 260                                 dialog.hide();
 261                                 dialog.css( 'top', evt.pageY + 3 );
 262                                 dialog.css( 'left', evt.pageX + 3 );
 263                                 dialog.show();
 264                                 root_tree_dialog_timeout = setTimeout( function() {
 265                                         $( '#root_tree_dialog' ).data( 'selectedNode', null ).hide();
 266                                         ellipse.removeClass( 'stemma_node_highlight' );
 267                                         g.mouseleave( function() { ellipse.removeClass( 'stemma_node_highlight' ) } );
 268                                 }, 3000 );
 269                         } );
 270                         g.mouseenter( function() {
 271                                 $( 'ellipse.stemma_node_highlight' ).removeClass( 'stemma_node_highlight' );
 272                                 ellipse.addClass( 'stemma_node_highlight' )
 273                         } );
 274                         g.mouseleave( function() { ellipse.removeClass( 'stemma_node_highlight' ) } );
 275                 } );
 276         }
 277 }
 278
 279 // General-purpose error-handling function.
 280 // TODO make sure this gets used throughout, where appropriate.
 281 function display_error( jqXHR, el ) {
 282         var errmsg;
 283         if( jqXHR.responseText == "" ) {
 284                 errmsg = "perhaps the server went down?"
 285         } else {
 286                 var errobj;
 287                 try {
 288                         errobj = jQuery.parseJSON( jqXHR.responseText );
 289                         errmsg = errobj.error;
 290                 } catch ( parse_err ) {
 291                         errmsg = "something went wrong on the server."
 292                 }
 293         }
 294         var msghtml = $('<span>').attr('class', 'error').text( "An error occurred: " + errmsg );
 295         $(el).empty().append( msghtml ).show();
 296 }
 297
 298 // Event to enable the upload button when a file has been selected
 299 function file_selected( e ) {
 300         if( e.files.length == 1 ) {
 301                 $('#upload_button').button('enable');
 302                 $('#new_file_name_container').html( '<span id="new_file_name">' + e.files[0].name + '</span>' );
 303         } else {
 304                 $('#upload_button').button('disable');
 305                 $('#new_file_name_container').html( '(Use \'pick file\' to select a tradition file to upload.)' );
 306         }
 307 }
 308
 309 // Implement our own AJAX method that uses the features of XMLHttpRequest2
 310 // but try to let it have a similar interface to jquery.post
 311 // The data var needs to be a FormData() object.
 312 // The callback will be given a single argument, which is the response data
 313 // of the given type.
 314
 315 function post_xhr2( url, data, cb, type ) {
 316         if( !type ) {
 317                 type = 'json';
 318         }
 319         var xhr = new XMLHttpRequest();
 320         // Set the expected response type
 321         if( type === 'data' ) {
 322                 xhr.responseType = 'blob';
 323         } else if( type === 'xml' ) {
 324                 xhr.responseType = 'document';
 325         }
 326         // Post the form
 327         // Gin up an AJAX settings object
 328         $.ajaxSetup({ url: url, type: 'POST' });
 329         xhr.open( 'POST', url, true );
 330         // Handle the results
 331         xhr.onload = function( e ) {
 332                 // Get the response and parse it
 333                 // Call the callback with the response, whatever it was
 334                 var xhrs = e.target;
 335                 if( xhrs.status > 199 && xhrs.status < 300  ) { // Success
 336                         var resp;
 337                         if( type === 'json' ) {
 338                                 resp = $.parseJSON( xhrs.responseText );
 339                         } else if ( type === 'xml' ) {
 340                                 resp = xhrs.responseXML;
 341                         } else if ( type === 'text' ) {
 342                                 resp = xhrs.responseText;
 343                         } else {
 344                                 resp = xhrs.response;
 345                         }
 346                         cb( resp );
 347                 } else {
 348                         // Trigger the ajaxError...
 349                         _trigger_ajaxerror( e );
 350                 }
 351         };
 352         xhr.onerror = _trigger_ajaxerror;
 353         xhr.onabort = _trigger_ajaxerror;
 354         xhr.send( data );
 355 }
 356
 357 function _trigger_ajaxerror( e ) {
 358         var xhr = e.target;
 359         var thrown = xhr.statusText || 'Request error';
 360         jQuery.event.trigger( 'ajaxError', [ xhr, $.ajaxSettings, thrown ]);
 361 }
 362
 363 function upload_new () {
 364         // Serialize the upload form, get the file and attach it to the request,
 365         // POST the lot and handle the response.
 366         var newfile = $('#new_file').get(0).files[0];
 367         var reader = new FileReader();
 368         reader.onload = function( evt ) {
 369                 var data = new FormData();
 370                 $.each( $('#new_tradition').serializeArray(), function( i, o ) {
 371                                 data.append( o.name, o.value );
 372                         });
 373                 data.append( 'file', newfile );
 374                 var upload_url = _get_url([ 'newtradition' ]);
 375                 post_xhr2( upload_url, data, function( ret ) {
 376                         if( ret.id ) {
 377                                 $('#upload-collation-dialog').dialog('close');
 378                                 refreshDirectory();
 379                                 loadTradition( ret.id, ret.name, 1 );
 380                         } else if( ret.error ) {
 381                                 $('#upload_status').empty().append(
 382                                         $('<span>').attr('class', 'error').append( ret.error ) );
 383                         }
 384                 }, 'json' );
 385         };
 386         reader.onerror = function( evt ) {
 387                 var err_resp = 'File read error';
 388                 if( e.name == 'NotFoundError' ) {
 389                         err_resp = 'File not found';
 390                 } else if ( e.name == 'NotReadableError' ) {
 391                         err_resp == 'File unreadable - is it yours?';
 392                 } else if ( e.name == 'EncodingError' ) {
 393                         err_resp == 'File cannot be encoded - is it too long?';
 394                 } else if ( e.name == 'SecurityError' ) {
 395                         err_resp == 'File read security error';
 396                 }
 397                 // Fake a jqXHR object that we can pass to our generic error handler.
 398                 var jqxhr = { responseText: '{error:"' + err_resp + '"}' };
 399                 display_error( jqxhr, $('#upload_status') );
 400                 $('#upload_button').button('disable');
 401         }
 402
 403         reader.readAsBinaryString( newfile );
 404 }
 405
 406 // Utility function to neatly construct an application URL
 407 function _get_url( els ) {
 408         return basepath + els.join('/');
 409 }
 410
 411 // TODO Attach unified ajaxError handler to document
 412 $(document).ready( function() {
 413         // See if we have the browser functionality we need
 414         // TODO Also think of a test for SVG readiness
 415         if( !!window.FileReader && !!window.File ) {
 416                 $('#compatibility_check').empty();
 417         }
 418
 419     // hide dialog not yet in use
 420     $('#root_tree_dialog').hide();
 421
 422     // call out to load the directory div
 423     $('#textinfo_container').hide();
 424     $('#textinfo_waitbox').hide();
 425         refreshDirectory();
 426
 427         // Set up the textinfo edit dialog
 428         $('#textinfo-edit-dialog').dialog({
 429                 autoOpen: false,
 430                 height: 200,
 431                 width: 300,
 432                 modal: true,
 433                 buttons: {
 434                         Save: function (evt) {
 435                                 $("#edit_textinfo_status").empty();
 436                                 $(evt.target).button("disable");
 437                                 var requrl = _get_url([ "textinfo", selectedTextID ]);
 438                                 var reqparam = $('#edit_textinfo').serialize();
 439                                 $.post( requrl, reqparam, function (data) {
 440                                         // Reload the selected text fields
 441                                         selectedTextInfo = data;
 442                                         load_textinfo();
 443                                         // Reenable the button and close the form
 444                                         $(evt.target).button("enable");
 445                                         $('#textinfo-edit-dialog').dialog('close');
 446                                 }, 'json' );
 447                         },
 448                         Cancel: function() {
 449                                 $('#textinfo-edit-dialog').dialog('close');
 450                         }
 451                 },
 452                 open: function() {
 453                         $("#edit_textinfo_status").empty();
 454                         // Populate the form fields with the current values
 455                         // edit_(name, language, public, owner)
 456                         $.each([ 'name', 'language', 'owner' ], function( idx, k ) {
 457                                 var fname = '#edit_' + k;
 458                                 // Special case: language Default is basically language null
 459                                 if( k == 'language' && selectedTextInfo[k] == 'Default' ) {
 460                                         $(fname).val( "" );
 461                                 } else {
 462                                         $(fname).val( selectedTextInfo[k] );
 463                                 }
 464                         });
 465                         if( selectedTextInfo['public'] == true ) {
 466                                 $('#edit_public').attr('checked','true');
 467                         } else {
 468                                 $('#edit_public').removeAttr('checked');
 469                         }
 470                 },
 471         }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
 472                 $(event.target).parent().find('.ui-button').button("enable");
 473         if( ajaxSettings.url.indexOf( 'textinfo' ) > -1
 474                 && ajaxSettings.type == 'POST' ) {
 475                         display_error( jqXHR, $("#edit_textinfo_status") );
 476         }
 477         });
 478
 479
 480         // Set up the stemma editor dialog
 481         $('#stemma-edit-dialog').dialog({
 482                 autoOpen: false,
 483                 height: 700,
 484                 width: 600,
 485                 modal: true,
 486                 buttons: {
 487                         Save: function (evt) {
 488                                 $("#edit_stemma_status").empty();
 489                                 $(evt.target).button("disable");
 490                                 var stemmaseq = $('#stemmaseq').val();
 491                                 var requrl = _get_url([ "stemma", selectedTextID, stemmaseq ]);
 492                                 var reqparam = { 'dot': $('#dot_field').val() };
 493                                 // TODO We need to stash the literal SVG string in stemmata
 494                                 // somehow. Implement accept header on server side to decide
 495                                 // whether to send application/json or application/xml?
 496                                 $.post( requrl, reqparam, function (data) {
 497                                         // We received a stemma SVG string in return.
 498                                         // Update the current stemma sequence number
 499                                         selectedStemmaID = data.stemmaid;
 500                                         delete data.stemmaid;
 501                                         // Stash the answer in the appropriate spot in our stemma array
 502                                         stemmata[selectedStemmaID] = data;
 503                                         // Display the new stemma
 504                                         load_stemma( selectedStemmaID, true );
 505                                         // Reenable the button and close the form
 506                                         $(evt.target).button("enable");
 507                                         $('#stemma-edit-dialog').dialog('close');
 508                                 }, 'json' );
 509                         },
 510                         Cancel: function() {
 511                                 $('#stemma-edit-dialog').dialog('close');
 512                         }
 513                 },
 514                 open: function(evt) {
 515                         $("#edit_stemma_status").empty();
 516                         var stemmaseq = $('#stemmaseq').val();
 517                         if( stemmaseq == 'n' ) {
 518                                 // If we are creating a new stemma, populate the textarea with a
 519                                 // bare digraph.
 520                                 $(evt.target).dialog('option', 'title', 'Add a new stemma')
 521                                 $('#dot_field').val( "digraph \"NAME STEMMA HERE\" {\n\n}" );
 522                         } else {
 523                                 // If we are editing a stemma, grab its stemmadot and populate the
 524                                 // textarea with that.
 525                                 $(evt.target).dialog('option', 'title', 'Edit selected stemma')
 526                                 $('#dot_field').val( 'Loading, please wait...' );
 527                                 var doturl = _get_url([ "stemmadot", selectedTextID, stemmaseq ]);
 528                                 $.getJSON( doturl, function (data) {
 529                                         // Re-insert the line breaks
 530                                         var dotstring = data.dot.replace(/\|n/gm, "\n");
 531                                         $('#dot_field').val( dotstring );
 532                                 });
 533                         }
 534                 },
 535         }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
 536                 $(event.target).parent().find('.ui-button').button("enable");
 537         if( ajaxSettings.url.indexOf( 'stemma' ) > -1
 538                 && ajaxSettings.type == 'POST' ) {
 539                         display_error( jqXHR, $("#edit_stemma_status") );
 540         }
 541         });
 542
 543         $('#stemweb-ui-dialog').dialog({
 544                 autoOpen: false,
 545                 height: 160,
 546                 width: 225,
 547                 modal: true,
 548                 buttons: {
 549                         Run: function (evt) {
 550                                 $("#stemweb_run_status").empty();
 551                                 $(evt.target).button("disable");
 552                                 var requrl = _get_url([ "stemweb", "request" ]);
 553                                 var reqparam = $('#call_stemweb').serialize();
 554                                 // TODO We need to stash the literal SVG string in stemmata
 555                                 // somehow. Implement accept header on server side to decide
 556                                 // whether to send application/json or application/xml?
 557                                 $.getJSON( requrl, reqparam, function (data) {
 558                                         // Job ID is in data.jobid. TODO do something with it.
 559                                         selectedTextInfo.stemweb_jobid = data.jobid;
 560                                         $(evt.target).button("enable");
 561                                         $('#stemweb-ui-dialog').dialog('close');
 562                                         // Reload the current stemma to rejigger the buttons
 563                                         load_stemma( selectedStemmaID, true );
 564                                 }, 'json' );
 565                         },
 566                         Cancel: function() {
 567                                 $('#stemweb-ui-dialog').dialog('close');
 568                         }
 569                 },
 570                 create: function(evt) {
 571                         // Call out to Stemweb to get the algorithm options, with which we
 572                         // populate the form.
 573                         var algorithmTypes = {};
 574                         var algorithmArgs = {};
 575                         var requrl = _get_url([ "stemweb", "available" ]);
 576                         $.getJSON( requrl, function( data ) {
 577                                 $.each( data, function( i, o ) {
 578                                         if( o.model === 'algorithms.algorithm' ) {
 579                                                 // it's an algorithm.
 580                                                 algorithmTypes[ o.pk ] = o.fields;
 581                                         } else if( o.model == 'algorithms.algorithmarg' && o.fields.external ) {
 582                                                 // it's an option for an algorithm that we should display.
 583                                                 algorithmArgs[ o.pk ] = o.fields;
 584                                         }
 585                                 });
 586                                 // TODO if it is an empty object, disable Stemweb entirely.
 587                                 if( !jQuery.isEmptyObject( algorithmTypes ) ) {
 588                                         $.each( algorithmTypes, function( pk, fields ) {
 589                                                 var algopt = $('<option>').attr( 'value', pk ).append( fields.name );
 590                                                 $('#stemweb_algorithm').append( algopt );
 591                                         });
 592                                         // Set up the relevant options for whichever algorithm is chosen.
 593                                         // "key" -> form name, option ID "stemweb_$key_opt"
 594                                         // "name" -> form label
 595                                         $('#stemweb_algorithm').change( function() {
 596                                                 var pk = $(this).val();
 597                                                 $('#stemweb_runtime_options').empty();
 598                                                 $.each( algorithmTypes[pk].args, function( i, apk ) {
 599                                                         var argInfo = algorithmArgs[apk];
 600                                                         if( argInfo ) {
 601                                                                 // Make the element ID
 602                                                                 var optId = 'stemweb_' + argInfo.key + '_opt';
 603                                                                 // Make the label
 604                                                                 var optLabel = $('<label>').attr( 'for', optId )
 605                                                                         .append( argInfo.name + ": " );
 606                                                                 var optCtrl;
 607                                                                 var argType = argInfo.value;
 608                                                                 if( argType === 'positive_integer' ) {
 609                                                                         // Make it an input field of smallish size.
 610                                                                         optCtrl = $('<input>').attr( 'size', 4 );
 611                                                                 } else if ( argType === 'boolean' ) {
 612                                                                         // Make it a checkbox.
 613                                                                         optCtrl = $('<checkbox>');
 614                                                                 }
 615                                                                 // Add the name and element ID
 616                                                                 optCtrl.attr( 'name', argInfo.key ).attr( 'id', optId );
 617                                                                 // Append the label and the option itself to the form.
 618                                                                 $('#stemweb_runtime_options').append( optLabel )
 619                                                                         .append( optCtrl ).append( $('<br>') );
 620                                                         }
 621                                                 });
 622                                         });
 623                                         $('#stemweb_algorithm').change();
 624                                 }
 625                         });
 626                         // Prime the initial options
 627                 },
 628                 open: function(evt) {
 629                         $('#stemweb_run_status').empty();
 630                         $('#stemweb_tradition').attr('value', selectedTextID );
 631                 },
 632         }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
 633                 $(event.target).parent().find('.ui-button').button("enable");
 634         if( ajaxSettings.url.indexOf( 'stemweb/request' ) > -1 ) {
 635                         display_error( jqXHR, $("#stemweb_run_status") );
 636         }
 637         });
 638
 639         // Set up the download dialog
 640         $('#download-dialog').dialog({
 641                 autoOpen: false,
 642                 height: 150,
 643                 width: 300,
 644                 modal: true,
 645                 buttons: {
 646                         Download: function (evt) {
 647                                 var dlurl = _get_url([ "download", $('#download_tradition').val(), $('#download_format').val() ]);
 648                                 window.location = dlurl;
 649                         },
 650                         Done: function() {
 651                                 $('#download-dialog').dialog('close');
 652                         }
 653                 },
 654                 open: function() {
 655                         $('#download_tradition').attr('value', selectedTextID );
 656                 },
 657         }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
 658                 $(event.target).parent().find('.ui-button').button("enable");
 659         if( ajaxSettings.url.indexOf( 'download' ) > -1
 660                 && ajaxSettings.type == 'POST' ) {
 661                         display_error( jqXHR, $("#download_status") );
 662         }
 663         });
 664
 665         $('#upload-collation-dialog').dialog({
 666                 autoOpen: false,
 667                 height: 360,
 668                 width: 480,
 669                 modal: true,
 670                 buttons: {
 671                   upload: {
 672                     text: 'Upload',
 673                     id: 'upload_button',
 674                     click: function() {
 675                             $('#upload_status').empty();
 676                             $('#upload_button').button("disable");
 677                 upload_new();
 678             }
 679                   },
 680                   pick_file: {
 681                     text: 'Pick File',
 682                     id: 'pick_file_button',
 683                     click: function() {
 684                 $('#new_file').click();
 685             }
 686                   },
 687                   Cancel: function() {
 688                     $('#upload-collation-dialog').dialog('close');
 689                   }
 690                 },
 691                 open: function() {
 692                         // Set the upload button to its correct state based on
 693                         // whether a file is loaded
 694                         file_selected( $('#new_file').get(0) );
 695                         $('#upload_status').empty();
 696                 }
 697         }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
 698                 // Reset button state
 699                 file_selected( $('#new_file').get(0) );
 700                 // Display error message if applicable
 701         if( ajaxSettings.url.indexOf( 'newtradition' ) > -1
 702                 && ajaxSettings.type == 'POST' ) {
 703                         display_error( jqXHR, $("#upload_status") );
 704         }
 705         });;
 706
 707         $('#stemma_graph').mousedown( function(evt) {
 708         evt.stopPropagation();
 709         $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
 710         $('body').mousemove( function(evt) {
 711             mouse_scale = 1; // for now, was:  mouse_scale = svg_root_element.getScreenCTM().a;
 712             dx = (evt.clientX - $('#stemma_graph').data( 'mousedown_xy' )[0]) / mouse_scale;
 713             dy = (evt.clientY - $('#stemma_graph').data( 'mousedown_xy' )[1]) / mouse_scale;
 714             $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
 715             var svg_root = $('#stemma_graph svg').svg().svg('get').root();
 716             var g = $('g.graph', svg_root).get(0);
 717             current_translate = g.getAttribute( 'transform' ).split(/translate\(/)[1].split(')',1)[0].split(' ');
 718             new_transform = g.getAttribute( 'transform' ).replace( /translate\([^\)]*\)/, 'translate(' + (parseFloat(current_translate[0]) + dx) + ' ' + (parseFloat(current_translate[1]) + dy) + ')' );
 719             g.setAttribute( 'transform', new_transform );
 720             evt.returnValue = false;
 721             evt.preventDefault();
 722             return false;
 723         });
 724         $('body').mouseup( function(evt) {
 725             $('body').unbind('mousemove');
 726             $('body').unbind('mouseup');
 727         });
 728         });
 729
 730         $('#stemma_graph').mousewheel(function (event, delta) {
 731         event.returnValue = false;
 732         event.preventDefault();
 733         if (!delta || delta == null || delta == 0) delta = event.originalEvent.wheelDelta;
 734         if (!delta || delta == null || delta == 0) delta = -1 * event.originalEvent.detail;
 735         if( delta < -9 ) { delta = -9 };
 736         var z = 1 + delta/10;
 737         z = delta > 0 ? 1 : -1;
 738         var svg_root = $('#stemma_graph svg').svg().svg('get').root();
 739         var g = $('g.graph', svg_root).get(0);
 740         if (g && ((z<1 && (g.getScreenCTM().a * start_element_height) > 4.0) || (z>=1 && (g.getScreenCTM().a * start_element_height) < 1000))) {
 741             var scaleLevel = z/10;
 742             current_scale = parseFloat( g.getAttribute( 'transform' ).split(/scale\(/)[1].split(')',1)[0].split(' ')[0] );
 743             new_transform = g.getAttribute( 'transform' ).replace( /scale\([^\)]*\)/, 'scale(' + (current_scale + scaleLevel) + ')' );
 744             g.setAttribute( 'transform', new_transform );
 745         }
 746     });
 747
 748 });