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 loadSVG( stemmata[idx] );
138 // Stexaminer submit action
139 var stexpath = _get_url([ "stexaminer", selectedTextID, idx ]);
140 $('#run_stexaminer').attr( 'action', stexpath );
141 setTimeout( 'start_element_height = $("#stemma_graph .node")[0].getBBox().height;', 500 );
145 // Load the SVG we are given
146 function loadSVG(svgData) {
147 var svgElement = $('#stemma_graph');
149 $(svgElement).svg('destroy');
153 onLoad : function () {
154 var theSVG = svgElement.find('svg');
155 var svgoffset = theSVG.offset();
156 var browseroffset = 1;
157 // Firefox needs a different offset, stupidly enough
158 if( navigator.userAgent.indexOf('Firefox') > -1 ) {
159 browseroffset = 3; // works for tall images
160 // ...but if the SVG is wider than it is tall, Firefox treats
161 // the top as being the top of the graph, loaded into the middle
162 // of the canvas, but then the margin at the top of the canvas
163 // extends upward. So we have to find the actual top of the canvas
164 // and correct for *that* instead.
165 var vbdim = svgElement.svg().svg('get').root().viewBox.baseVal;
166 if( vbdim.height < vbdim.width ) {
167 var vbscale = svgElement.width() / vbdim.width;
168 var vbrealheight = vbdim.height * vbscale;
169 browseroffset = 3 + ( svgElement.height() - vbrealheight ) / 2;
172 var topoffset = theSVG.position().top - svgElement.position().top - browseroffset;
173 theSVG.offset({ top: svgoffset.top - topoffset, left: svgoffset.left });
178 // General-purpose error-handling function.
179 // TODO make sure this gets used throughout, where appropriate.
180 function display_error( jqXHR, el ) {
182 if( jqXHR.responseText == "" ) {
183 errmsg = "perhaps the server went down?"
187 errobj = jQuery.parseJSON( jqXHR.responseText );
188 errmsg = errobj.error;
189 } catch ( parse_err ) {
190 errmsg = "something went wrong on the server."
193 var msghtml = $('<span>').attr('class', 'error').text( "An error occurred: " + errmsg );
194 $(el).empty().append( msghtml ).show();
197 // Event to enable the upload button when a file has been selected
198 function file_selected( e ) {
199 if( e.files.length == 1 ) {
200 $('#upload_button').button('enable');
201 $('#new_file_name_container').html( '<span id="new_file_name">' + e.files[0].name + '</span>' );
203 $('#upload_button').button('disable');
204 $('#new_file_name_container').html( '(Use \'pick file\' to select a tradition file to upload.)' );
208 // Implement our own AJAX method that uses the features of XMLHttpRequest2
209 // but try to let it have a similar interface to jquery.post
210 // The data var needs to be a FormData() object.
211 // The callback will be given a single argument, which is the response data
212 // of the given type.
214 function post_xhr2( url, data, cb, type ) {
218 var xhr = new XMLHttpRequest();
219 // Set the expected response type
220 if( type === 'data' ) {
221 xhr.responseType = 'blob';
222 } else if( type === 'xml' ) {
223 xhr.responseType = 'document';
226 // Gin up an AJAX settings object
227 $.ajaxSetup({ url: url, type: 'POST' });
228 xhr.open( 'POST', url, true );
229 // Handle the results
230 xhr.onload = function( e ) {
231 // Get the response and parse it
232 // Call the callback with the response, whatever it was
234 if( xhrs.status > 199 && xhrs.status < 300 ) { // Success
236 if( type === 'json' ) {
237 resp = $.parseJSON( xhrs.responseText );
238 } else if ( type === 'xml' ) {
239 resp = xhrs.responseXML;
240 } else if ( type === 'text' ) {
241 resp = xhrs.responseText;
243 resp = xhrs.response;
247 // Trigger the ajaxError...
248 _trigger_ajaxerror( e );
251 xhr.onerror = _trigger_ajaxerror;
252 xhr.onabort = _trigger_ajaxerror;
256 function _trigger_ajaxerror( e ) {
258 var thrown = xhr.statusText || 'Request error';
259 jQuery.event.trigger( 'ajaxError', [ xhr, $.ajaxSettings, thrown ]);
262 function upload_new () {
263 // Serialize the upload form, get the file and attach it to the request,
264 // POST the lot and handle the response.
265 var newfile = $('#new_file').get(0).files[0];
266 var reader = new FileReader();
267 reader.onload = function( evt ) {
268 var data = new FormData();
269 $.each( $('#new_tradition').serializeArray(), function( i, o ) {
270 data.append( o.name, o.value );
272 data.append( 'file', newfile );
273 var upload_url = _get_url([ 'newtradition' ]);
274 post_xhr2( upload_url, data, function( ret ) {
276 $('#upload-collation-dialog').dialog('close');
278 loadTradition( ret.id, ret.name, 1 );
279 } else if( ret.error ) {
280 $('#upload_status').empty().append(
281 $('<span>').attr('class', 'error').append( ret.error ) );
285 reader.onerror = function( evt ) {
286 var err_resp = 'File read error';
287 if( e.name == 'NotFoundError' ) {
288 err_resp = 'File not found';
289 } else if ( e.name == 'NotReadableError' ) {
290 err_resp == 'File unreadable - is it yours?';
291 } else if ( e.name == 'EncodingError' ) {
292 err_resp == 'File cannot be encoded - is it too long?';
293 } else if ( e.name == 'SecurityError' ) {
294 err_resp == 'File read security error';
296 // Fake a jqXHR object that we can pass to our generic error handler.
297 var jqxhr = { responseText: '{error:"' + err_resp + '"}' };
298 display_error( jqxhr, $('#upload_status') );
299 $('#upload_button').button('disable');
302 reader.readAsBinaryString( newfile );
305 // Utility function to neatly construct an application URL
306 function _get_url( els ) {
307 return basepath + els.join('/');
311 $(document).ready( function() {
312 // See if we have the browser functionality we need
313 // TODO Also think of a test for SVG readiness
314 if( !!window.FileReader && !!window.File ) {
315 $('#compatibility_check').empty();
318 // call out to load the directory div
319 $('#textinfo_container').hide();
320 $('#textinfo_waitbox').hide();
323 // Set up the textinfo edit dialog
324 $('#textinfo-edit-dialog').dialog({
330 Save: function (evt) {
331 $("#edit_textinfo_status").empty();
332 $(evt.target).button("disable");
333 var requrl = _get_url([ "textinfo", selectedTextID ]);
334 var reqparam = $('#edit_textinfo').serialize();
335 $.post( requrl, reqparam, function (data) {
336 // Reload the selected text fields
337 selectedTextInfo = data;
339 // Reenable the button and close the form
340 $(evt.target).button("enable");
341 $('#textinfo-edit-dialog').dialog('close');
345 $('#textinfo-edit-dialog').dialog('close');
349 $("#edit_textinfo_status").empty();
350 // Populate the form fields with the current values
351 // edit_(name, language, public, owner)
352 $.each([ 'name', 'language', 'owner' ], function( idx, k ) {
353 var fname = '#edit_' + k;
354 // Special case: language Default is basically language null
355 if( k == 'language' && selectedTextInfo[k] == 'Default' ) {
358 $(fname).val( selectedTextInfo[k] );
361 if( selectedTextInfo['public'] == true ) {
362 $('#edit_public').attr('checked','true');
364 $('#edit_public').removeAttr('checked');
367 }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
368 $(event.target).parent().find('.ui-button').button("enable");
369 if( ajaxSettings.url.indexOf( 'textinfo' ) > -1
370 && ajaxSettings.type == 'POST' ) {
371 display_error( jqXHR, $("#edit_textinfo_status") );
376 // Set up the stemma editor dialog
377 $('#stemma-edit-dialog').dialog({
383 Save: function (evt) {
384 $("#edit_stemma_status").empty();
385 $(evt.target).button("disable");
386 var stemmaseq = $('#stemmaseq').val();
387 var requrl = _get_url([ "stemma", selectedTextID, stemmaseq ]);
388 var reqparam = { 'dot': $('#dot_field').val() };
389 // TODO We need to stash the literal SVG string in stemmata
390 // somehow. Implement accept header on server side to decide
391 // whether to send application/json or application/xml?
392 $.post( requrl, reqparam, function (data) {
393 // We received a stemma SVG string in return.
394 // Update the current stemma sequence number
395 selectedStemmaID = data.stemmaid;
396 // Stash the answer in our SVG array
397 stemmata[selectedStemmaID] = data.stemmasvg;
398 // Display the new stemma
399 load_stemma( selectedStemmaID );
400 // Show the edit button, in case this was the first new stemma
401 $('#open_stemma_edit').show();
402 // Reenable the button and close the form
403 $(evt.target).button("enable");
404 $('#stemma-edit-dialog').dialog('close');
408 $('#stemma-edit-dialog').dialog('close');
411 open: function(evt) {
412 $("#edit_stemma_status").empty();
413 var stemmaseq = $('#stemmaseq').val();
414 if( stemmaseq == 'n' ) {
415 // If we are creating a new stemma, populate the textarea with a
417 $(evt.target).dialog('option', 'title', 'Add a new stemma')
418 $('#dot_field').val( "digraph stemma {\n\n}" );
420 // If we are editing a stemma, grab its stemmadot and populate the
421 // textarea with that.
422 $(evt.target).dialog('option', 'title', 'Edit selected stemma')
423 $('#dot_field').val( 'Loading, please wait...' );
424 var doturl = _get_url([ "stemmadot", selectedTextID, stemmaseq ]);
425 $.getJSON( doturl, function (data) {
426 // Re-insert the line breaks
427 var dotstring = data.dot.replace(/\|n/gm, "\n");
428 $('#dot_field').val( dotstring );
432 }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
433 $(event.target).parent().find('.ui-button').button("enable");
434 if( ajaxSettings.url.indexOf( 'stemma' ) > -1
435 && ajaxSettings.type == 'POST' ) {
436 display_error( jqXHR, $("#edit_stemma_status") );
440 $('#upload-collation-dialog').dialog({
450 $('#upload_status').empty();
451 $('#upload_button').button("disable");
457 id: 'pick_file_button',
459 $('#new_file').click();
463 $('#upload-collation-dialog').dialog('close');
467 // Set the upload button to its correct state based on
468 // whether a file is loaded
469 file_selected( $('#new_file').get(0) );
470 $('#upload_status').empty();
472 }).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
473 // Reset button state
474 file_selected( $('#new_file').get(0) );
475 // Display error message if applicable
476 if( ajaxSettings.url.indexOf( 'newtradition' ) > -1
477 && ajaxSettings.type == 'POST' ) {
478 display_error( jqXHR, $("#upload_status") );
482 $('#stemma_graph').mousedown( function(evt) {
483 evt.stopPropagation();
484 $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
485 $('body').mousemove( function(evt) {
486 mouse_scale = 1; // for now, was: mouse_scale = svg_root_element.getScreenCTM().a;
487 dx = (evt.clientX - $('#stemma_graph').data( 'mousedown_xy' )[0]) / mouse_scale;
488 dy = (evt.clientY - $('#stemma_graph').data( 'mousedown_xy' )[1]) / mouse_scale;
489 $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
490 var svg_root = $('#stemma_graph svg').svg().svg('get').root();
491 var g = $('g.graph', svg_root).get(0);
492 current_translate = g.getAttribute( 'transform' ).split(/translate\(/)[1].split(')',1)[0].split(' ');
493 new_transform = g.getAttribute( 'transform' ).replace( /translate\([^\)]*\)/, 'translate(' + (parseFloat(current_translate[0]) + dx) + ' ' + (parseFloat(current_translate[1]) + dy) + ')' );
494 g.setAttribute( 'transform', new_transform );
495 evt.returnValue = false;
496 evt.preventDefault();
499 $('body').mouseup( function(evt) {
500 $('body').unbind('mousemove');
501 $('body').unbind('mouseup');
505 $('#stemma_graph').mousewheel(function (event, delta) {
506 event.returnValue = false;
507 event.preventDefault();
508 if (!delta || delta == null || delta == 0) delta = event.originalEvent.wheelDelta;
509 if (!delta || delta == null || delta == 0) delta = -1 * event.originalEvent.detail;
510 if( delta < -9 ) { delta = -9 };
511 var z = 1 + delta/10;
512 z = delta > 0 ? 1 : -1;
513 var svg_root = $('#stemma_graph svg').svg().svg('get').root();
514 var g = $('g.graph', svg_root).get(0);
515 if (g && ((z<1 && (g.getScreenCTM().a * start_element_height) > 4.0) || (z>=1 && (g.getScreenCTM().a * start_element_height) < 1000))) {
516 var scaleLevel = z/10;
517 current_scale = parseFloat( g.getAttribute( 'transform' ).split(/scale\(/)[1].split(')',1)[0].split(' ')[0] );
518 new_transform = g.getAttribute( 'transform' ).replace( /scale\([^\)]*\)/, 'scale(' + (current_scale + scaleLevel) + ')' );
519 g.setAttribute( 'transform', new_transform );