[scpubgit/stemmaweb.git] / root / js / componentload.js

// Global state variables
var selectedTextID;
var selectedTextInfo;
var selectedStemmaID = -1;
var stemmata = [];

// Load the names of the appropriate traditions into the directory div.
function refreshDirectory () {
	var lmesg = $('#loading_message').clone();
	$('#directory').empty().append( lmesg.contents() );
    $('#directory').load( _get_url(["directory"]), 
    	function(response, status, xhr) {
			if (status == "error") {
				var msg = "An error occurred: ";
				$("#directory").html(msg + xhr.status + " " + xhr.statusText);
			} else {
				if( textOnLoad != "" ) {
					// Call the click callback for the relevant text, if it is
					// in the page.
					$('#'+textOnLoad).click();
					textOnLoad = "";
				}
			}
		}
	);
}

// Load a tradition with its information and stemmata into the tradition
// view pane. Calls load_textinfo.
function loadTradition( textid, textname, editable ) {
	selectedTextID = textid;
    // First insert the placeholder image and register an error handler
    $('#textinfo_load_status').empty();
    $('#stemma_graph').empty();
    $('#textinfo_waitbox').show();
    $('#textinfo_container').hide().ajaxError( 
    	function(event, jqXHR, ajaxSettings, thrownError) {
    	if( ajaxSettings.url.indexOf( 'textinfo' ) > -1 && ajaxSettings.type == 'GET'  ) {
			$('#textinfo_waitbox').hide();
			$('#textinfo_container').show();
			display_error( jqXHR, $("#textinfo_load_status") );
    	}
    });
    
    // Hide the functionality that is irrelevant
    if( editable ) {
    	$('#open_stemma_add').show();
    	$('#open_stemma_edit').show();
    	$('#open_textinfo_edit').show();
    } else {
    	$('#open_stemma_add').hide();
    	$('#open_stemma_edit').hide();
    	$('#open_textinfo_edit').hide();
    }

    // Then get and load the actual content.
    // TODO: scale #stemma_graph both horizontally and vertically
    // TODO: load svgs from SVG.Jquery (to make scaling react in Safari)
    $.getJSON( _get_url([ "textinfo", textid ]), function (textdata) {
    	// Add the scalar data
    	selectedTextInfo = textdata;
    	load_textinfo();
     	// Add the stemma(ta) and set up the stexaminer button
    	stemmata = textdata.stemmata;
    	if( stemmata.length ) {
    		selectedStemmaID = 0;
			$('#run_stexaminer').show();
    	} else {
    		selectedStemmaID = -1;
			$('#open_stemma_edit').hide();
			$('#run_stexaminer').hide();
		}
		load_stemma( selectedStemmaID );
    	// Set up the relationship mapper button
		$('#run_relater').attr( 'action', _get_url([ "relation", textid ]) );
	});
}

// Load the metadata about a tradition into the appropriate div.
function load_textinfo() {
	$('#textinfo_waitbox').hide();
	$('#textinfo_load_status').empty();
	$('#textinfo_container').show();
	$('.texttitle').empty().append( selectedTextInfo.name );
	// Witnesses
	$('#witness_num').empty().append( selectedTextInfo.witnesses.size );
	$('#witness_list').empty().append( selectedTextInfo.witnesses.join( ', ' ) );
	// Who the owner is
	$('#owner_id').empty().append('no one');
	if( selectedTextInfo.owner ) {
		$('#owner_id').empty().append( selectedTextInfo.owner );
	}
	// Whether or not it is public
	$('#not_public').empty();
	if( selectedTextInfo['public'] == false ) {
		$('#not_public').append('NOT ');
	}
	// What language setting it has, if any
	$('#marked_language').empty().append('no language set');
	if( selectedTextInfo.language && selectedTextInfo.language != 'Default' ) {
		$('#marked_language').empty().append( selectedTextInfo.language );
	}
}	

// Enable / disable the appropriate buttons for paging through the stemma.
function show_stemmapager () {
      $('.pager_left_button').unbind('click').addClass( 'greyed_out' );
      $('.pager_right_button').unbind('click').addClass( 'greyed_out' );
      if( selectedStemmaID > 0 ) {
              $('.pager_left_button').click( function () {
                      load_stemma( selectedStemmaID - 1 );
              }).removeClass( 'greyed_out' );
      }       
      if( selectedStemmaID + 1 < stemmata.length ) {
              $('.pager_right_button').click( function () {
                      load_stemma( selectedStemmaID + 1 );
              }).removeClass( 'greyed_out' );
      }
}

// Load a given stemma SVG into the stemmagraph box.
function load_stemma( idx ) {
	// Load the stemma at idx
	selectedStemmaID = idx;
	show_stemmapager();
	if( idx > -1 ) {
		$('#stemma_graph').empty();
		$('#stemma_graph').append( stemmata[idx] );
		// Stexaminer submit action
		var stexpath = _get_url([ "stexaminer", selectedTextID, idx ]);
		$('#run_stexaminer').attr( 'action', stexpath );
        setTimeout( 'start_element_height = $("#stemma_graph .node")[0].getBBox().height;', 500 );
	}
}

// General-purpose error-handling function.
// TODO make sure this gets used throughout, where appropriate.
function display_error( jqXHR, el ) {
	var errmsg;
	if( jqXHR.responseText == "" ) {
		errmsg = "perhaps the server went down?"
	} else {
		var errobj;
		try {
			errobj = jQuery.parseJSON( jqXHR.responseText );
			errmsg = errobj.error;
		} catch ( parse_err ) {
			errmsg = "something went wrong on the server."
		}
	}
	var msghtml = $('<span>').attr('class', 'error').text( "An error occurred: " + errmsg );
	$(el).empty().append( msghtml ).show();
}

function start_upload_dialog() {
    if( typeof uploader != 'undefined' ){ uploader.destroy() };
    $('#upload-collation-dialog').dialog('option', 'attach_uploader')();
    $('#upload_status').empty();
    $('#upload_button').button('disable');
    $('#upload-collation-dialog').dialog('open');
}

// Utility function to neatly construct an application URL
function _get_url( els ) {
	return basepath + els.join('/');
}

$(document).ready( function() {
    // call out to load the directory div
    $('#textinfo_container').hide();
    $('#textinfo_waitbox').hide();
	refreshDirectory();
	
	// Set up the textinfo edit dialog
	$('#textinfo-edit-dialog').dialog({
		autoOpen: false,
		height: 200,
		width: 300,
		modal: true,
		buttons: {
			Save: function (evt) {
				$("#edit_textinfo_status").empty();
				$(evt.target).button("disable");
				var requrl = _get_url([ "textinfo", selectedTextID ]);
				var reqparam = $('#edit_textinfo').serialize();
				$.post( requrl, reqparam, function (data) {
					// Reload the selected text fields
					selectedTextInfo = data;
					load_textinfo();
					// Reenable the button and close the form
					$(evt.target).button("enable");
					$('#textinfo-edit-dialog').dialog('close');
				}, 'json' );
			},
			Cancel: function() {
				$('#textinfo-edit-dialog').dialog('close');
			}
		},
		open: function() {
			$("#edit_textinfo_status").empty();
			// Populate the form fields with the current values
			// edit_(name, language, public, owner)
			$.each([ 'name', 'language', 'owner' ], function( idx, k ) {
				var fname = '#edit_' + k;
				// Special case: language Default is basically language null
				if( k == 'language' && selectedTextInfo[k] == 'Default' ) {
					$(fname).val( "" );
				} else {
					$(fname).val( selectedTextInfo[k] );
				}
			});
			if( selectedTextInfo['public'] == true ) {
				$('#edit_public').attr('checked','true');
			} else {
				$('#edit_public').removeAttr('checked');
			}
		},
	}).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
		$(event.target).parent().find('.ui-button').button("enable");
    	if( ajaxSettings.url.indexOf( 'textinfo' ) > -1 
    		&& ajaxSettings.type == 'POST' ) {
			display_error( jqXHR, $("#edit_textinfo_status") );
    	}
	});

	
	// Set up the stemma editor dialog
	$('#stemma-edit-dialog').dialog({
		autoOpen: false,
		height: 700,
		width: 600,
		modal: true,
		buttons: {
			Save: function (evt) {
				$("#edit_stemma_status").empty();
				$(evt.target).button("disable");
				var stemmaseq = $('#stemmaseq').val();
				var requrl = _get_url([ "stemma", selectedTextID, stemmaseq ]);
				var reqparam = { 'dot': $('#dot_field').val() };
				// TODO We need to stash the literal SVG string in stemmata
				// somehow. Implement accept header on server side to decide
				// whether to send application/json or application/xml?
				$.post( requrl, reqparam, function (data) {
					// We received a stemma SVG string in return. 
					// Update the current stemma sequence number
					selectedStemmaID = data.stemmaid;
					// Stash the answer in our SVG array
					stemmata[selectedStemmaID] = data.stemmasvg;
					// Display the new stemma
					load_stemma( selectedStemmaID );
					// Reenable the button and close the form
					$(evt.target).button("enable");
					$('#stemma-edit-dialog').dialog('close');
				}, 'json' );
			},
			Cancel: function() {
				$('#stemma-edit-dialog').dialog('close');
			}
		},
		open: function(evt) {
			$("#edit_stemma_status").empty();
			var stemmaseq = $('#stemmaseq').val();
			if( stemmaseq == 'n' ) {
				// If we are creating a new stemma, populate the textarea with a
				// bare digraph.
				$(evt.target).dialog('option', 'title', 'Add a new stemma')
				$('#dot_field').val( "digraph stemma {\n\n}" );
			} else {
				// If we are editing a stemma, grab its stemmadot and populate the
				// textarea with that.
				$(evt.target).dialog('option', 'title', 'Edit selected stemma')
				$('#dot_field').val( 'Loading, please wait...' );
				var doturl = _get_url([ "stemmadot", selectedTextID, stemmaseq ]);
				$.getJSON( doturl, function (data) {
					// Re-insert the line breaks
					var dotstring = data.dot.replace(/\|n/gm, "\n");					
					$('#dot_field').val( dotstring );
				});
			}
		},
	}).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
		$(event.target).parent().find('.ui-button').button("enable");
    	if( ajaxSettings.url.indexOf( 'stemma' ) > -1 
    		&& ajaxSettings.type == 'POST' ) {
			display_error( jqXHR, $("#edit_stemma_status") );
    	}
	});
		
	$('#upload-collation-dialog').dialog({
		autoOpen: false,
		height: 325,
		width: 480,
		modal: true,
		buttons: {
		  pick: {
		    text: "Pick File",
		    id: "pick_uploadfile_button",
		    click: function() {}       
		  },
		  upload: {
		    text: 'Upload',
		    id: 'upload_button',
		    click: function() {
			    $('#upload_status').empty();
                uploader.start();
                return false;
            }
		  },
		  Cancel: function() {
		    $('#upload-collation-dialog').dialog('close');
		  }
		},
		attach_uploader: function() {
		    create_uploader( _get_url([ "newtradition" ]) );
		    $('#filelist').empty().html( 'Use the \'Pick\' button to choose a source file…' );
		}
	});
	
	$('#stemma_graph').mousedown( function(evt) {
        evt.stopPropagation();
        $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
        $('body').mousemove( function(evt) {
            mouse_scale = 1; // for now, was:  mouse_scale = svg_root_element.getScreenCTM().a;
            dx = (evt.clientX - $('#stemma_graph').data( 'mousedown_xy' )[0]) / mouse_scale;
            dy = (evt.clientY - $('#stemma_graph').data( 'mousedown_xy' )[1]) / mouse_scale;
            $('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
            var svg_root = $('#stemma_graph svg').svg().svg('get').root();
            var g = $('g.graph', svg_root).get(0);
            current_translate = g.getAttribute( 'transform' ).split(/translate\(/)[1].split(')',1)[0].split(' ');
            new_transform = g.getAttribute( 'transform' ).replace( /translate\([^\)]*\)/, 'translate(' + (parseFloat(current_translate[0]) + dx) + ' ' + (parseFloat(current_translate[1]) + dy) + ')' );
            g.setAttribute( 'transform', new_transform );
            evt.returnValue = false;
            evt.preventDefault();
            return false;
        });
        $('body').mouseup( function(evt) {
            $('body').unbind('mousemove');
            $('body').unbind('mouseup');
        });
	});
	 
	$('#stemma_graph').mousewheel(function (event, delta) {
        event.returnValue = false;
        event.preventDefault();
        if (!delta || delta == null || delta == 0) delta = event.originalEvent.wheelDelta;
        if (!delta || delta == null || delta == 0) delta = -1 * event.originalEvent.detail;
        if( delta < -9 ) { delta = -9 }; 
        var z = 1 + delta/10;
        z = delta > 0 ? 1 : -1;
        var svg_root = $('#stemma_graph svg').svg().svg('get').root();
        var g = $('g.graph', svg_root).get(0);
        if (g && ((z<1 && (g.getScreenCTM().a * start_element_height) > 4.0) || (z>=1 && (g.getScreenCTM().a * start_element_height) < 1000))) {
            var scaleLevel = z/10;
            current_scale = parseFloat( g.getAttribute( 'transform' ).split(/scale\(/)[1].split(')',1)[0].split(' ')[0] );
            new_transform = g.getAttribute( 'transform' ).replace( /scale\([^\)]*\)/, 'scale(' + (current_scale + scaleLevel) + ')' );
            g.setAttribute( 'transform', new_transform );
        }
    });
    
});
Commit	Line	Data
3f9d7ae5	1	// Global state variables
	2	var selectedTextID;
	3	var selectedTextInfo;
	4	var selectedStemmaID = -1;
	5	var stemmata = [];
	6
	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);
	16	} else {
	17	if( textOnLoad != "" ) {
	18	// Call the click callback for the relevant text, if it is
	19	// in the page.
	20	$('#'+textOnLoad).click();
	21	textOnLoad = "";
	22	}
	23	}
	24	}
	25	);
	26	}
	27
	28	// Load a tradition with its information and stemmata into the tradition
	29	// view pane. Calls load_textinfo.
98a45925	30	function loadTradition( textid, textname, editable ) {
	31	selectedTextID = textid;
	32	// First insert the placeholder image and register an error handler
04469f3e	33	$('#textinfo_load_status').empty();
5f0eda3f	34	$('#stemma_graph').empty();
98a45925	35	$('#textinfo_waitbox').show();
75354c3a	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") );
98a45925	42	}
75354c3a	43	});
	44
	45	// Hide the functionality that is irrelevant
	46	if( editable ) {
ce1c5863	47	$('#open_stemma_add').show();
	48	$('#open_stemma_edit').show();
	49	$('#open_textinfo_edit').show();
75354c3a	50	} else {
ce1c5863	51	$('#open_stemma_add').hide();
	52	$('#open_stemma_edit').hide();
	53	$('#open_textinfo_edit').hide();
75354c3a	54	}
75354c3a	55
62723740	56	// Then get and load the actual content.
98a45925	57	// TODO: scale #stemma_graph both horizontally and vertically
f6a8db89	58	// TODO: load svgs from SVG.Jquery (to make scaling react in Safari)
3f9d7ae5	59	$.getJSON( _get_url([ "textinfo", textid ]), function (textdata) {
98a45925	60	// Add the scalar data
75354c3a	61	selectedTextInfo = textdata;
	62	load_textinfo();
	63	// Add the stemma(ta) and set up the stexaminer button
98a45925	64	stemmata = textdata.stemmata;
	65	if( stemmata.length ) {
	66	selectedStemmaID = 0;
57e3a008	67	$('#run_stexaminer').show();
65a0c9c6	68	} else {
57e3a008	69	selectedStemmaID = -1;
65a0c9c6	70	$('#open_stemma_edit').hide();
65a0c9c6	71	$('#run_stexaminer').hide();
65a0c9c6	72	}
3f9d7ae5	73	load_stemma( selectedStemmaID );
98a45925	74	// Set up the relationship mapper button
3f9d7ae5	75	$('#run_relater').attr( 'action', _get_url([ "relation", textid ]) );
98a45925	76	});
	77	}
	78
3f9d7ae5	79	// Load the metadata about a tradition into the appropriate div.
75354c3a	80	function load_textinfo() {
	81	$('#textinfo_waitbox').hide();
	82	$('#textinfo_load_status').empty();
	83	$('#textinfo_container').show();
	84	$('.texttitle').empty().append( selectedTextInfo.name );
	85	// Witnesses
	86	$('#witness_num').empty().append( selectedTextInfo.witnesses.size );
	87	$('#witness_list').empty().append( selectedTextInfo.witnesses.join( ', ' ) );
	88	// Who the owner is
	89	$('#owner_id').empty().append('no one');
	90	if( selectedTextInfo.owner ) {
	91	$('#owner_id').empty().append( selectedTextInfo.owner );
	92	}
	93	// Whether or not it is public
	94	$('#not_public').empty();
	95	if( selectedTextInfo['public'] == false ) {
	96	$('#not_public').append('NOT ');
	97	}
	98	// What language setting it has, if any
	99	$('#marked_language').empty().append('no language set');
	100	if( selectedTextInfo.language && selectedTextInfo.language != 'Default' ) {
	101	$('#marked_language').empty().append( selectedTextInfo.language );
	102	}
	103	}
	104
3f9d7ae5	105	// Enable / disable the appropriate buttons for paging through the stemma.
65a0c9c6	106	function show_stemmapager () {
bf81fb57	107	$('.pager_left_button').unbind('click').addClass( 'greyed_out' );
bf81fb57	108	$('.pager_right_button').unbind('click').addClass( 'greyed_out' );
65a0c9c6	109	if( selectedStemmaID > 0 ) {
	110	$('.pager_left_button').click( function () {
	111	load_stemma( selectedStemmaID - 1 );
bf81fb57	112	}).removeClass( 'greyed_out' );
65a0c9c6	113	}
	114	if( selectedStemmaID + 1 < stemmata.length ) {
	115	$('.pager_right_button').click( function () {
	116	load_stemma( selectedStemmaID + 1 );
bf81fb57	117	}).removeClass( 'greyed_out' );
65a0c9c6	118	}
	119	}
	120
3f9d7ae5	121	// Load a given stemma SVG into the stemmagraph box.
75354c3a	122	function load_stemma( idx ) {
65a0c9c6	123	// Load the stemma at idx
65a0c9c6	124	selectedStemmaID = idx;
57e3a008	125	show_stemmapager();
98a45925	126	if( idx > -1 ) {
98a45925	127	$('#stemma_graph').empty();
	128	$('#stemma_graph').append( stemmata[idx] );
	129	// Stexaminer submit action
3f9d7ae5	130	var stexpath = _get_url([ "stexaminer", selectedTextID, idx ]);
98a45925	131	$('#run_stexaminer').attr( 'action', stexpath );
40803b80	132	setTimeout( 'start_element_height = $("#stemma_graph .node")[0].getBBox().height;', 500 );
98a45925	133	}
5ba6c2b4	134	}
75354c3a	135
3f9d7ae5	136	// General-purpose error-handling function.
3f9d7ae5	137	// TODO make sure this gets used throughout, where appropriate.
75354c3a	138	function display_error( jqXHR, el ) {
ce1c5863	139	var errmsg;
	140	if( jqXHR.responseText == "" ) {
	141	errmsg = "perhaps the server went down?"
75354c3a	142	} else {
ce1c5863	143	var errobj;
	144	try {
	145	errobj = jQuery.parseJSON( jqXHR.responseText );
	146	errmsg = errobj.error;
	147	} catch ( parse_err ) {
	148	errmsg = "something went wrong on the server."
	149	}
75354c3a	150	}
ce1c5863	151	var msghtml = $('<span>').attr('class', 'error').text( "An error occurred: " + errmsg );
75354c3a	152	$(el).empty().append( msghtml ).show();
3f9d7ae5	153	}
	154
	155	function start_upload_dialog() {
	156	if( typeof uploader != 'undefined' ){ uploader.destroy() };
	157	$('#upload-collation-dialog').dialog('option', 'attach_uploader')();
	158	$('#upload_status').empty();
	159	$('#upload_button').button('disable');
	160	$('#upload-collation-dialog').dialog('open');
	161	}
	162
	163	// Utility function to neatly construct an application URL
	164	function _get_url( els ) {
	165	return basepath + els.join('/');
	166	}
	167
	168	$(document).ready( function() {
	169	// call out to load the directory div
	170	$('#textinfo_container').hide();
	171	$('#textinfo_waitbox').hide();
	172	refreshDirectory();
	173
	174	// Set up the textinfo edit dialog
	175	$('#textinfo-edit-dialog').dialog({
	176	autoOpen: false,
	177	height: 200,
	178	width: 300,
	179	modal: true,
	180	buttons: {
	181	Save: function (evt) {
	182	$("#edit_textinfo_status").empty();
	183	$(evt.target).button("disable");
	184	var requrl = _get_url([ "textinfo", selectedTextID ]);
	185	var reqparam = $('#edit_textinfo').serialize();
	186	$.post( requrl, reqparam, function (data) {
	187	// Reload the selected text fields
	188	selectedTextInfo = data;
	189	load_textinfo();
	190	// Reenable the button and close the form
	191	$(evt.target).button("enable");
	192	$('#textinfo-edit-dialog').dialog('close');
	193	}, 'json' );
	194	},
	195	Cancel: function() {
	196	$('#textinfo-edit-dialog').dialog('close');
	197	}
	198	},
	199	open: function() {
	200	$("#edit_textinfo_status").empty();
	201	// Populate the form fields with the current values
	202	// edit_(name, language, public, owner)
	203	$.each([ 'name', 'language', 'owner' ], function( idx, k ) {
	204	var fname = '#edit_' + k;
	205	// Special case: language Default is basically language null
	206	if( k == 'language' && selectedTextInfo[k] == 'Default' ) {
	207	$(fname).val( "" );
	208	} else {
	209	$(fname).val( selectedTextInfo[k] );
	210	}
	211	});
	212	if( selectedTextInfo['public'] == true ) {
	213	$('#edit_public').attr('checked','true');
	214	} else {
	215	$('#edit_public').removeAttr('checked');
	216	}
217	},
218	}).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
219	$(event.target).parent().find('.ui-button').button("enable");
220	if( ajaxSettings.url.indexOf( 'textinfo' ) > -1
221	&& ajaxSettings.type == 'POST' ) {
222	display_error( jqXHR, $("#edit_textinfo_status") );
223	}
224	});
225
226
227	// Set up the stemma editor dialog
228	$('#stemma-edit-dialog').dialog({
229	autoOpen: false,
230	height: 700,
231	width: 600,
232	modal: true,
233	buttons: {
234	Save: function (evt) {
235	$("#edit_stemma_status").empty();
236	$(evt.target).button("disable");
237	var stemmaseq = $('#stemmaseq').val();
238	var requrl = _get_url([ "stemma", selectedTextID, stemmaseq ]);
239	var reqparam = { 'dot': $('#dot_field').val() };
240	// TODO We need to stash the literal SVG string in stemmata
241	// somehow. Implement accept header on server side to decide
242	// whether to send application/json or application/xml?
243	$.post( requrl, reqparam, function (data) {
244	// We received a stemma SVG string in return.
245	// Update the current stemma sequence number
246	selectedStemmaID = data.stemmaid;
247	// Stash the answer in our SVG array
248	stemmata[selectedStemmaID] = data.stemmasvg;
249	// Display the new stemma
250	load_stemma( selectedStemmaID );
251	// Reenable the button and close the form
252	$(evt.target).button("enable");
253	$('#stemma-edit-dialog').dialog('close');
254	}, 'json' );
255	},
256	Cancel: function() {
257	$('#stemma-edit-dialog').dialog('close');
258	}
259	},
260	open: function(evt) {
261	$("#edit_stemma_status").empty();
262	var stemmaseq = $('#stemmaseq').val();
263	if( stemmaseq == 'n' ) {
264	// If we are creating a new stemma, populate the textarea with a
265	// bare digraph.
266	$(evt.target).dialog('option', 'title', 'Add a new stemma')
267	$('#dot_field').val( "digraph stemma {\n\n}" );
268	} else {
269	// If we are editing a stemma, grab its stemmadot and populate the
270	// textarea with that.
271	$(evt.target).dialog('option', 'title', 'Edit selected stemma')
272	$('#dot_field').val( 'Loading, please wait...' );
273	var doturl = _get_url([ "stemmadot", selectedTextID, stemmaseq ]);
274	$.getJSON( doturl, function (data) {
275	// Re-insert the line breaks
276	var dotstring = data.dot.replace(/\\|n/gm, "\n");
277	$('#dot_field').val( dotstring );
278	});
279	}
280	},
281	}).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
282	$(event.target).parent().find('.ui-button').button("enable");
283	if( ajaxSettings.url.indexOf( 'stemma' ) > -1
284	&& ajaxSettings.type == 'POST' ) {
285	display_error( jqXHR, $("#edit_stemma_status") );
286	}
287	});
288
289	$('#upload-collation-dialog').dialog({
290	autoOpen: false,
291	height: 325,
292	width: 480,
293	modal: true,
294	buttons: {
295	pick: {
296	text: "Pick File",
297	id: "pick_uploadfile_button",
298	click: function() {}
299	},
300	upload: {
301	text: 'Upload',
302	id: 'upload_button',
303	click: function() {
304	$('#upload_status').empty();
305	uploader.start();
306	return false;
307	}
308	},
309	Cancel: function() {
310	$('#upload-collation-dialog').dialog('close');
311	}
312	},
313	attach_uploader: function() {
314	create_uploader( _get_url([ "newtradition" ]) );
315	$('#filelist').empty().html( 'Use the \'Pick\' button to choose a source file…' );
316	}
317	});
318
319	$('#stemma_graph').mousedown( function(evt) {
320	evt.stopPropagation();
321	$('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
322	$('body').mousemove( function(evt) {
323	mouse_scale = 1; // for now, was: mouse_scale = svg_root_element.getScreenCTM().a;
324	dx = (evt.clientX - $('#stemma_graph').data( 'mousedown_xy' )[0]) / mouse_scale;
325	dy = (evt.clientY - $('#stemma_graph').data( 'mousedown_xy' )[1]) / mouse_scale;
326	$('#stemma_graph').data( 'mousedown_xy', [evt.clientX, evt.clientY] );
327	var svg_root = $('#stemma_graph svg').svg().svg('get').root();
328	var g = $('g.graph', svg_root).get(0);
329	current_translate = g.getAttribute( 'transform' ).split(/translate\(/)[1].split(')',1)[0].split(' ');
330	new_transform = g.getAttribute( 'transform' ).replace( /translate\([^\)]*\)/, 'translate(' + (parseFloat(current_translate[0]) + dx) + ' ' + (parseFloat(current_translate[1]) + dy) + ')' );
331	g.setAttribute( 'transform', new_transform );
332	evt.returnValue = false;
333	evt.preventDefault();
334	return false;
335	});
336	$('body').mouseup( function(evt) {
337	$('body').unbind('mousemove');
338	$('body').unbind('mouseup');
339	});
340	});
341
342	$('#stemma_graph').mousewheel(function (event, delta) {
343	event.returnValue = false;
344	event.preventDefault();
345	if (!delta \|\| delta == null \|\| delta == 0) delta = event.originalEvent.wheelDelta;
346	if (!delta \|\| delta == null \|\| delta == 0) delta = -1 * event.originalEvent.detail;
347	if( delta < -9 ) { delta = -9 };
348	var z = 1 + delta/10;
349	z = delta > 0 ? 1 : -1;
350	var svg_root = $('#stemma_graph svg').svg().svg('get').root();
351	var g = $('g.graph', svg_root).get(0);
352	if (g && ((z<1 && (g.getScreenCTM().a * start_element_height) > 4.0) \|\| (z>=1 && (g.getScreenCTM().a * start_element_height) < 1000))) {
353	var scaleLevel = z/10;
354	current_scale = parseFloat( g.getAttribute( 'transform' ).split(/scale\(/)[1].split(')',1)[0].split(' ')[0] );
355	new_transform = g.getAttribute( 'transform' ).replace( /scale\([^\)]*\)/, 'scale(' + (current_scale + scaleLevel) + ')' );
356	g.setAttribute( 'transform', new_transform );
357	}
358	});
359
360	});