1 // Global state variables
4 var selectedStemmaID = -1;
7 // Load the names of the appropriate traditions into the directory div.
8 function refreshDirectory () {
9 var lmesg = $('#loading_message').clone();
10 $('#directory').empty().append( lmesg.contents() );
11 $('#directory').load( _get_url(["directory"]),
12 function(response, status, xhr) {
13 if (status == "error") {
14 var msg = "An error occurred: ";
15 $("#directory").html(msg + xhr.status + " " + xhr.statusText);
17 if( textOnLoad != "" ) {
18 // Call the click callback for the relevant text, if it is
20 $('#'+textOnLoad).click();
28 // Load a tradition with its information and stemmata into the tradition
29 // view pane. Calls load_textinfo.
30 function loadTradition( textid, textname, editable ) {
31 selectedTextID = textid;
32 // First insert the placeholder image and register an error handler
33 $('#textinfo_load_status').empty();
34 $('#stemma_graph').empty();
35 $('#textinfo_waitbox').show();
36 $('#textinfo_container').hide().ajaxError(
37 function(event, jqXHR, ajaxSettings, thrownError) {
38 if( ajaxSettings.url.indexOf( 'textinfo' ) > -1 && ajaxSettings.type == 'GET' ) {
39 $('#textinfo_waitbox').hide();
40 $('#textinfo_container').show();
41 display_error( jqXHR, $("#textinfo_load_status") );
45 // Hide the functionality that is irrelevant
47 $('#open_stemma_add').show();
48 $('#open_stemma_edit').show();
49 $('#open_textinfo_edit').show();
50 $('#relatebutton_label').text('View collation and edit relationships');
52 $('#open_stemma_add').hide();
53 $('#open_stemma_edit').hide();
54 $('#open_textinfo_edit').hide();
55 $('#relatebutton_label').text('View collation and relationships');
58 // Then get and load the actual content.
59 // TODO: scale #stemma_graph both horizontally and vertically
60 // TODO: load svgs from SVG.Jquery (to make scaling react in Safari)
61 $.getJSON( _get_url([ "textinfo", textid ]), function (textdata) {
62 // Add the scalar data
63 selectedTextInfo = textdata;
65 // Add the stemma(ta) and set up the stexaminer button
66 stemmata = textdata.stemmata;
67 if( stemmata.length ) {
69 $('#run_stexaminer').show();
71 selectedStemmaID = -1;
72 $('#open_stemma_edit').hide();
73 $('#run_stexaminer').hide();
75 load_stemma( selectedStemmaID );
76 // Set up the relationship mapper button
77 $('#run_relater').attr( 'action', _get_url([ "relation", textid ]) );
78 // Set up the download button
79 $('#dl_tradition').attr( 'href', _get_url([ "download", textid ]) );
80 $('#dl_tradition').attr( 'download', selectedTextInfo.name + '.xml' );
84 // Load the metadata about a tradition into the appropriate div.
85 function load_textinfo() {
86 $('#textinfo_waitbox').hide();
87 $('#textinfo_load_status').empty();
88 $('#textinfo_container').show();
89 $('.texttitle').empty().append( selectedTextInfo.name );
91 $('#witness_num').empty().append( selectedTextInfo.witnesses.size );
92 $('#witness_list').empty().append( selectedTextInfo.witnesses.join( ', ' ) );
94 $('#owner_id').empty().append('no one');
95 if( selectedTextInfo.owner ) {
96 var owneremail = selectedTextInfo.owner;
97 var chop = owneremail.indexOf( '@' );
99 owneremail = owneremail.substr( 0, chop + 1 ) + '...';
101 $('#owner_id').empty().append( owneremail );
103 // Whether or not it is public
104 $('#not_public').empty();
105 if( selectedTextInfo['public'] == false ) {
106 $('#not_public').append('NOT ');
108 // What language setting it has, if any
109 $('#marked_language').empty().append('no language set');
110 if( selectedTextInfo.language && selectedTextInfo.language != 'Default' ) {
111 $('#marked_language').empty().append( selectedTextInfo.language );
115 // Enable / disable the appropriate buttons for paging through the stemma.
116 function show_stemmapager () {
117 $('.pager_left_button').unbind('click').addClass( 'greyed_out' );
118 $('.pager_right_button').unbind('click').addClass( 'greyed_out' );
119 if( selectedStemmaID > 0 ) {
120 $('.pager_left_button').click( function () {
121 load_stemma( selectedStemmaID - 1 );
122 }).removeClass( 'greyed_out' );
124 if( selectedStemmaID + 1 < stemmata.length ) {
125 $('.pager_right_button').click( function () {
126 load_stemma( selectedStemmaID + 1 );
127 }).removeClass( 'greyed_out' );
131 // Load a given stemma SVG into the stemmagraph box.
132 function load_stemma( idx ) {
133 // Load the stemma at idx
134 selectedStemmaID = idx;
137 // Load the SVG and identifier of the stemma
138 var stemmadata = stemmata[idx];
139 loadSVG( stemmadata['svg'] );
140 $('#stemma_identifier').empty().text( stemmadata['name'] );
141 // Stexaminer submit action
142 var stexpath = _get_url([ "stexaminer", selectedTextID, idx ]);
143 $('#run_stexaminer').attr( 'action', stexpath );
144 setTimeout( 'start_element_height = $("#stemma_graph .node")[0].getBBox().height;', 500 );
148 // Load the SVG we are given
149 function loadSVG(svgData) {
150 var svgElement = $('#stemma_graph');
152 $(svgElement).svg('destroy');
156 onLoad : function () {
157 var theSVG = svgElement.find('svg');
158 var svgoffset = theSVG.offset();
159 var browseroffset = 1;
160 // Firefox needs a different offset, stupidly enough
161 if( navigator.userAgent.indexOf('Firefox') > -1 ) {
162 browseroffset = 3; // works for tall images
163 // ...but if the SVG is wider than it is tall, Firefox treats
164 // the top as being the top of the graph, loaded into the middle
165 // of the canvas, but then the margin at the top of the canvas
166 // extends upward. So we have to find the actual top of the canvas
167 // and correct for *that* instead.
168 var vbdim = svgElement.svg().svg('get').root().viewBox.baseVal;
169 if( vbdim.height < vbdim.width ) {
170 var vbscale = svgElement.width() / vbdim.width;
171 var vbrealheight = vbdim.height * vbscale;
172 browseroffset = 3 + ( svgElement.height() - vbrealheight ) / 2;
175 var topoffset = theSVG.position().top - svgElement.position().top - browseroffset;
176 theSVG.offset({ top: svgoffset.top - topoffset, left: svgoffset.left });
181 // General-purpose error-handling function.
182 // TODO make sure this gets used throughout, where appropriate.
183 function display_error( jqXHR, el ) {
185 if( jqXHR.responseText == "" ) {
186 errmsg = "perhaps the server went down?"
190 errobj = jQuery.parseJSON( jqXHR.responseText );
191 errmsg = errobj.error;
192 } catch ( parse_err ) {
193 errmsg = "something went wrong on the server."
196 var msghtml = $('<span>').attr('class', 'error').text( "An error occurred: " + errmsg );
197 $(el).empty().append( msghtml ).show();
200 // Event to enable the upload button when a file has been selected
201 function file_selected( e ) {
202 if( e.files.length == 1 ) {
203 $('#upload_button').button('enable');
204 $('#new_file_name_container').html( '<span id="new_file_name">' + e.files[0].name + '</span>' );
206 $('#upload_button').button('disable');
207 $('#new_file_name_container').html( '(Use \'pick file\' to select a tradition file to upload.)' );
211 // Implement our own AJAX method that uses the features of XMLHttpRequest2
212 // but try to let it have a similar interface to jquery.post
213 // The data var needs to be a FormData() object.
214 // The callback will be given a single argument, which is the response data
215 // of the given type.
217 function post_xhr2( url, data, cb, type ) {
221 var xhr = new XMLHttpRequest();
222 // Set the expected response type
223 if( type === 'data' ) {
224 xhr.responseType = 'blob';
225 } else if( type === 'xml' ) {
226 xhr.responseType = 'document';
229 // Gin up an AJAX settings object
230 $.ajaxSetup({ url: url, type: 'POST' });
231 xhr.open( 'POST', url, true );
232 // Handle the results
233 xhr.onload = function( e ) {
234 // Get the response and parse it
235 // Call the callback with the response, whatever it was
237 if( xhrs.status > 199 && xhrs.status < 300 ) { // Success
239 if( type === 'json' ) {
240 resp = $.parseJSON( xhrs.responseText );
241 } else if ( type === 'xml' ) {
242 resp = xhrs.responseXML;
243 } else if ( type === 'text' ) {
244 resp = xhrs.responseText;
246 resp = xhrs.response;
250 // Trigger the ajaxError...
251 _trigger_ajaxerror( e );
254 xhr.onerror = _trigger_ajaxerror;
255 xhr.onabort = _trigger_ajaxerror;
259 function _trigger_ajaxerror( e ) {
261 var thrown = xhr.statusText || 'Request error';
262 jQuery.event.trigger( 'ajaxError', [ xhr, $.ajaxSettings, thrown ]);
265 function upload_new () {
266 // Serialize the upload form, get the file and attach it to the request,
267 // POST the lot and handle the response.
268 var newfile = $('#new_file').get(0).files[0];
269 var reader = new FileReader();
270 reader.onload = function( evt ) {
271 var data = new FormData();
272 $.each( $('#new_tradition').serializeArray(), function( i, o ) {
273 data.append( o.name, o.value );
275 data.append( 'file', newfile );
276 var upload_url = _get_url([ 'newtradition' ]);
277 post_xhr2( upload_url, data, function( ret ) {
279 $('#upload-collation-dialog').dialog('close');
281 loadTradition( ret.id, ret.name, 1 );
282 } else if( ret.error ) {
283 $('#upload_status').empty().append(
284 $('<span>').attr('class', 'error').append( ret.error ) );
288 reader.onerror = function( evt ) {
289 var err_resp = 'File read error';
290 if( e.name == 'NotFoundError' ) {
291 err_resp = 'File not found';
292 } else if ( e.name == 'NotReadableError' ) {
293 err_resp == 'File unreadable - is it yours?';
294 } else if ( e.name == 'EncodingError' ) {
295 err_resp == 'File cannot be encoded - is it too long?';
296 } else if ( e.name == 'SecurityError' ) {
297 err_resp == 'File read security error';
299 // Fake a jqXHR object that we can pass to our generic error handler.
300 var jqxhr = { responseText: '{error:"' + err_resp + '"}' };
301 display_error( jqxhr, $('#upload_status') );
302 $('#upload_button').button('disable');
305 reader.readAsBinaryString( newfile );
308 // Utility function to neatly construct an application URL
309 function _get_url( els ) {
310 return basepath + els.join('/');
314 $(document).ready( function() {
315 // See if we have the browser functionality we need
316 // TODO Also think of a test for SVG readiness
317 if( !!window.FileReader && !!window.File ) {
318 $('#compatibility_check').empty();
321 // call out to load the directory div
322 $('#textinfo_container').hide();
323 $('#textinfo_waitbox').hide();
326 // Set up the textinfo edit dialog
327 $('#textinfo-edit-dialog').dialog({
333 Save: function (evt) {
334 $("#edit_textinfo_status").empty();
335 $(evt.target).button("disable");
336 var requrl = _get_url([ "textinfo", selectedTextID ]);
337 var reqparam = $('#edit_textinfo').serialize();
338 $.post( requrl, reqparam, function (data) {
339 // Reload the selected text fields
340 selectedTextInfo = data;
342 // Reenable the button and close the form
343 $(evt.target).button("enable");
344 $('#textinfo-edit-dialog').dialog('close');
348 $('#textinfo-edit-dialog').dialog('close');
352 $("#edit_textinfo_status").empty();
353 // Populate the form fields with the current values
354 // edit_(name, language, public, owner)
355 $.each([ 'name', 'language', 'owner' ], function( idx, k ) {
356 var fname = '#edit_' + k;
357 // Special case: language Default is basically language null
358 if( k == 'language' && selectedTextInfo[k] == 'Default' ) {
361 $(fname).val( selectedTextInfo[k] );
364 if( selectedTextInfo['public'] == true ) {
365 $('#edit_public').attr('checked','true');
367 $('#edit_public').removeAttr('checked');
370 }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
371 $(event.target).parent().find('.ui-button').button("enable");
372 if( ajaxSettings.url.indexOf( 'textinfo' ) > -1
373 && ajaxSettings.type == 'POST' ) {
374 display_error( jqXHR, $("#edit_textinfo_status") );
379 // Set up the stemma editor dialog
380 $('#stemma-edit-dialog').dialog({
386 Save: function (evt) {
387 $("#edit_stemma_status").empty();
388 $(evt.target).button("disable");
389 var stemmaseq = $('#stemmaseq').val();
390 var requrl = _get_url([ "stemma", selectedTextID, stemmaseq ]);
391 var reqparam = { 'dot': $('#dot_field').val() };
392 // TODO We need to stash the literal SVG string in stemmata
393 // somehow. Implement accept header on server side to decide
394 // whether to send application/json or application/xml?
395 $.post( requrl, reqparam, function (data) {
396 // We received a stemma SVG string in return.
397 // Update the current stemma sequence number
398 selectedStemmaID = data.stemmaid;
399 // Stash the answer in our SVG array
400 stemmata[selectedStemmaID] = data.stemmasvg;
401 // Display the new stemma
402 load_stemma( selectedStemmaID );
403 // Show the edit button, in case this was the first new stemma
404 $('#open_stemma_edit').show();
405 // Reenable the button and close the form
406 $(evt.target).button("enable");
407 $('#stemma-edit-dialog').dialog('close');
411 $('#stemma-edit-dialog').dialog('close');
414 open: function(evt) {
415 $("#edit_stemma_status").empty();
416 var stemmaseq = $('#stemmaseq').val();
417 if( stemmaseq == 'n' ) {
418 // If we are creating a new stemma, populate the textarea with a
420 $(evt.target).dialog('option', 'title', 'Add a new stemma')
421 $('#dot_field').val( "digraph stemma {\n\n}" );
423 // If we are editing a stemma, grab its stemmadot and populate the
424 // textarea with that.
425 $(evt.target).dialog('option', 'title', 'Edit selected stemma')
426 $('#dot_field').val( 'Loading, please wait...' );
427 var doturl = _get_url([ "stemmadot", selectedTextID, stemmaseq ]);
428 $.getJSON( doturl, function (data) {
429 // Re-insert the line breaks
430 var dotstring = data.dot.replace(/\|n/gm, "\n");
431 $('#dot_field').val( dotstring );
435 }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
436 $(event.target).parent().find('.ui-button').button("enable");
437 if( ajaxSettings.url.indexOf( 'stemma' ) > -1
438 && ajaxSettings.type == 'POST' ) {
439 display_error( jqXHR, $("#edit_stemma_status") );
443 $('#upload-collation-dialog').dialog({
453 $('#upload_status').empty();
454 $('#upload_button').button("disable");
460 id: 'pick_file_button',
462 $('#new_file').click();
466 $('#upload-collation-dialog').dialog('close');
470 // Set the upload button to its correct state based on
471 // whether a file is loaded
472 file_selected( $('#new_file').get(0) );
473 $('#upload_status').empty();
475 }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
476 // Reset button state
477 file_selected( $('#new_file').get(0) );
478 // Display error message if applicable
479 if( ajaxSettings.url.indexOf( 'newtradition' ) > -1
480 && ajaxSettings.type == 'POST' ) {
481 display_error( jqXHR, $("#upload_status") );
485 $('#stemma_graph').mousedown( function(evt) {
486 evt.stopPropagation();
487 $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
488 $('body').mousemove( function(evt) {
489 mouse_scale = 1; // for now, was: mouse_scale = svg_root_element.getScreenCTM().a;
490 dx = (evt.clientX - $('#stemma_graph').data( 'mousedown_xy' )[0]) / mouse_scale;
491 dy = (evt.clientY - $('#stemma_graph').data( 'mousedown_xy' )[1]) / mouse_scale;
492 $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
493 var svg_root = $('#stemma_graph svg').svg().svg('get').root();
494 var g = $('g.graph', svg_root).get(0);
495 current_translate = g.getAttribute( 'transform' ).split(/translate\(/)[1].split(')',1)[0].split(' ');
496 new_transform = g.getAttribute( 'transform' ).replace( /translate\([^\)]*\)/, 'translate(' + (parseFloat(current_translate[0]) + dx) + ' ' + (parseFloat(current_translate[1]) + dy) + ')' );
497 g.setAttribute( 'transform', new_transform );
498 evt.returnValue = false;
499 evt.preventDefault();
502 $('body').mouseup( function(evt) {
503 $('body').unbind('mousemove');
504 $('body').unbind('mouseup');
508 $('#stemma_graph').mousewheel(function (event, delta) {
509 event.returnValue = false;
510 event.preventDefault();
511 if (!delta || delta == null || delta == 0) delta = event.originalEvent.wheelDelta;
512 if (!delta || delta == null || delta == 0) delta = -1 * event.originalEvent.detail;
513 if( delta < -9 ) { delta = -9 };
514 var z = 1 + delta/10;
515 z = delta > 0 ? 1 : -1;
516 var svg_root = $('#stemma_graph svg').svg().svg('get').root();
517 var g = $('g.graph', svg_root).get(0);
518 if (g && ((z<1 && (g.getScreenCTM().a * start_element_height) > 4.0) || (z>=1 && (g.getScreenCTM().a * start_element_height) < 1000))) {
519 var scaleLevel = z/10;
520 current_scale = parseFloat( g.getAttribute( 'transform' ).split(/scale\(/)[1].split(')',1)[0].split(' ')[0] );
521 new_transform = g.getAttribute( 'transform' ).replace( /scale\([^\)]*\)/, 'scale(' + (current_scale + scaleLevel) + ')' );
522 g.setAttribute( 'transform', new_transform );