X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=root%2Fjs%2Fcomponentload.js;h=da3ad7f90c29cdeb99901a3a444ffe3b79d865ab;hb=38627d20c7f0a0f82ec820b716842d69e905d643;hp=2df5feca77625f08d56e80a1bcdea5c8d6172e5d;hpb=65a0c9c6c2ffa577d6068b7b8c181e84b1bd23bc;p=scpubgit%2Fstemmaweb.git

diff --git a/root/js/componentload.js b/root/js/componentload.js
index 2df5fec..da3ad7f 100644
--- a/root/js/componentload.js
+++ b/root/js/componentload.js
@@ -1,3 +1,32 @@
+// 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
@@ -18,16 +47,18 @@ function loadTradition( textid, textname, editable ) {
     	$('#open_stemma_add').show();
     	$('#open_stemma_edit').show();
     	$('#open_textinfo_edit').show();
+    	$('#relatebutton_label').text('View collation and edit relationships');
     } else {
     	$('#open_stemma_add').hide();
     	$('#open_stemma_edit').hide();
     	$('#open_textinfo_edit').hide();
+    	$('#relatebutton_label').text('View collation and relationships');
     }
 
     // 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( basepath + "/textinfo/" + textid, function (textdata) {
+    $.getJSON( _get_url([ "textinfo", textid ]), function (textdata) {
     	// Add the scalar data
     	selectedTextInfo = textdata;
     	load_textinfo();
@@ -35,17 +66,22 @@ function loadTradition( textid, textname, editable ) {
     	stemmata = textdata.stemmata;
     	if( stemmata.length ) {
     		selectedStemmaID = 0;
-    		load_stemma( selectedStemmaID, basepath );
+			$('#run_stexaminer').show();
     	} else {
+    		selectedStemmaID = -1;
 			$('#open_stemma_edit').hide();
 			$('#run_stexaminer').hide();
-			show_stemmapager(); // to grey out both buttons
 		}
+		load_stemma( selectedStemmaID );
     	// Set up the relationship mapper button
-		$('#run_relater').attr( 'action', basepath + "/relation/" + textid );
+		$('#run_relater').attr( 'action', _get_url([ "relation", textid ]) );
+		// Set up the download button
+		$('#dl_tradition').attr( 'href', _get_url([ "download", textid ]) );
+		$('#dl_tradition').attr( 'download', selectedTextInfo.name + '.xml' );
 	});
 }
 
+// Load the metadata about a tradition into the appropriate div.
 function load_textinfo() {
 	$('#textinfo_waitbox').hide();
 	$('#textinfo_load_status').empty();
@@ -57,7 +93,12 @@ function load_textinfo() {
 	// Who the owner is
 	$('#owner_id').empty().append('no one');
 	if( selectedTextInfo.owner ) {
-		$('#owner_id').empty().append( selectedTextInfo.owner );
+		var owneremail = selectedTextInfo.owner;
+		var chop = owneremail.indexOf( '@' );
+		if( chop > -1 ) {
+			owneremail = owneremail.substr( 0, chop + 1 ) + '...';
+		}
+		$('#owner_id').empty().append( owneremail );
 	}
 	// Whether or not it is public
 	$('#not_public').empty();
@@ -71,36 +112,71 @@ function load_textinfo() {
 	}
 }	
 
+// Enable / disable the appropriate buttons for paging through the stemma.
 function show_stemmapager () {
-      $('.pager_left_button').unbind('click').css( 'opacity', '0.5' );
-      $('.pager_right_button').unbind('click').css( 'opacity', '0.5' );
+      $('.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 );
-              }).css( 'opacity' , '1.0' );
+              }).removeClass( 'greyed_out' );
       }       
       if( selectedStemmaID + 1 < stemmata.length ) {
               $('.pager_right_button').click( function () {
                       load_stemma( selectedStemmaID + 1 );
-              }).css( 'opacity' , '1.0' );
+              }).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] );
-		show_stemmapager();
+		loadSVG( stemmata[idx] );
 		// Stexaminer submit action
-		var stexpath = basepath + "/stexaminer/" + selectedTextID + "/" + idx;
+		var stexpath = _get_url([ "stexaminer", selectedTextID, idx ]);
 		$('#run_stexaminer').attr( 'action', stexpath );
         setTimeout( 'start_element_height = $("#stemma_graph .node")[0].getBBox().height;', 500 );
 	}
 }
 
+// Load the SVG we are given
+function loadSVG(svgData) {
+	var svgElement = $('#stemma_graph');
+
+	$(svgElement).svg('destroy');
+
+	$(svgElement).svg({
+		loadURL: svgData,
+		onLoad : function () {
+			var theSVG = svgElement.find('svg');
+			var svgoffset = theSVG.offset();
+			var browseroffset = 1;
+			// Firefox needs a different offset, stupidly enough
+			if( navigator.userAgent.indexOf('Firefox') > -1 ) {
+				browseroffset = 3; // works for tall images
+				// ...but if the SVG is wider than it is tall, Firefox treats
+				// the top as being the top of the graph, loaded into the middle
+				// of the canvas, but then the margin at the top of the canvas
+				// extends upward. So we have to find the actual top of the canvas
+				// and correct for *that* instead.
+				var vbdim = svgElement.svg().svg('get').root().viewBox.baseVal;
+				if( vbdim.height < vbdim.width ) {
+					var vbscale = svgElement.width() / vbdim.width;
+					var vbrealheight = vbdim.height * vbscale;
+					browseroffset = 3 + ( svgElement.height() - vbrealheight ) / 2;
+				}
+			}
+			var topoffset = theSVG.position().top - svgElement.position().top - browseroffset;
+			theSVG.offset({ top: svgoffset.top - topoffset, left: svgoffset.left });
+		}
+	});
+}
+
+// General-purpose error-handling function.
+// TODO make sure this gets used throughout, where appropriate.
 function display_error( jqXHR, el ) {
 	var errmsg;
 	if( jqXHR.responseText == "" ) {
@@ -116,4 +192,330 @@ function display_error( jqXHR, el ) {
 	}
 	var msghtml = $('<span>').attr('class', 'error').text( "An error occurred: " + errmsg );
 	$(el).empty().append( msghtml ).show();
-}
\ No newline at end of file
+}
+
+// Event to enable the upload button when a file has been selected
+function file_selected( e ) {
+	if( e.files.length == 1 ) {
+		$('#upload_button').button('enable');
+		$('#new_file_name_container').html( '<span id="new_file_name">' + e.files[0].name + '</span>' );
+	} else {
+		$('#upload_button').button('disable');
+		$('#new_file_name_container').html( '(Use \'pick file\' to select a tradition file to upload.)' );
+	}
+}
+
+// Implement our own AJAX method that uses the features of XMLHttpRequest2
+// but try to let it have a similar interface to jquery.post
+// The data var needs to be a FormData() object.
+// The callback will be given a single argument, which is the response data
+// of the given type.
+
+function post_xhr2( url, data, cb, type ) {
+	if( !type ) {
+		type = 'json';
+	}
+	var xhr = new XMLHttpRequest();
+	// Set the expected response type
+	if( type === 'data' ) {
+		xhr.responseType = 'blob';
+	} else if( type === 'xml' ) {
+		xhr.responseType = 'document';
+	} 
+	// Post the form
+	// Gin up an AJAX settings object
+	$.ajaxSetup({ url: url, type: 'POST' });
+	xhr.open( 'POST', url, true );
+	// Handle the results
+	xhr.onload = function( e ) {
+		// Get the response and parse it
+		// Call the callback with the response, whatever it was
+		var xhrs = e.target;
+		if( xhrs.status > 199 && xhrs.status < 300  ) { // Success
+			var resp;
+			if( type === 'json' ) {
+				resp = $.parseJSON( xhrs.responseText );
+			} else if ( type === 'xml' ) {
+				resp = xhrs.responseXML;
+			} else if ( type === 'text' ) {
+				resp = xhrs.responseText;
+			} else {
+				resp = xhrs.response;
+			}
+			cb( resp );
+		} else {
+			// Trigger the ajaxError...
+			_trigger_ajaxerror( e );
+		}
+	};
+	xhr.onerror = _trigger_ajaxerror;
+	xhr.onabort = _trigger_ajaxerror;
+	xhr.send( data );
+}
+
+function _trigger_ajaxerror( e ) {
+	var xhr = e.target;
+	var thrown = xhr.statusText || 'Request error';
+	jQuery.event.trigger( 'ajaxError', [ xhr, $.ajaxSettings, thrown ]);
+}
+
+function upload_new () {
+	// Serialize the upload form, get the file and attach it to the request,
+	// POST the lot and handle the response.
+	var newfile = $('#new_file').get(0).files[0];
+	var reader = new FileReader();
+	reader.onload = function( evt ) {
+		var data = new FormData();
+		$.each( $('#new_tradition').serializeArray(), function( i, o ) {
+				data.append( o.name, o.value );
+			});
+		data.append( 'file', newfile );
+		var upload_url = _get_url([ 'newtradition' ]);
+		post_xhr2( upload_url, data, function( ret ) {
+			if( ret.id ) {
+				$('#upload-collation-dialog').dialog('close');
+				refreshDirectory();
+				loadTradition( ret.id, ret.name, 1 );
+			} else if( ret.error ) {
+				$('#upload_status').empty().append( 
+					$('<span>').attr('class', 'error').append( ret.error ) );
+			}
+		}, 'json' );
+	};
+	reader.onerror = function( evt ) {
+		var err_resp = 'File read error';
+		if( e.name == 'NotFoundError' ) {
+			err_resp = 'File not found';
+		} else if ( e.name == 'NotReadableError' ) {
+			err_resp == 'File unreadable - is it yours?';
+		} else if ( e.name == 'EncodingError' ) {
+			err_resp == 'File cannot be encoded - is it too long?';
+		} else if ( e.name == 'SecurityError' ) {
+			err_resp == 'File read security error';
+		}
+		// Fake a jqXHR object that we can pass to our generic error handler.
+		var jqxhr = { responseText: '{error:"' + err_resp + '"}' };
+		display_error( jqxhr, $('#upload_status') );
+		$('#upload_button').button('disable');
+	}
+	
+	reader.readAsBinaryString( newfile );
+}
+
+// Utility function to neatly construct an application URL
+function _get_url( els ) {
+	return basepath + els.join('/');
+}
+
+
+$(document).ready( function() {
+	// See if we have the browser functionality we need
+	// TODO Also think of a test for SVG readiness
+	if( !!window.FileReader && !!window.File ) {
+		$('#compatibility_check').empty();
+	}
+	
+    // 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: 360,
+		width: 480,
+		modal: true,
+		buttons: {
+		  upload: {
+		    text: 'Upload',
+		    id: 'upload_button',
+		    click: function() {
+			    $('#upload_status').empty();
+			    $('#upload_button').button("disable");
+                upload_new();
+            }
+		  },
+		  pick_file: {
+		    text: 'Pick File',
+		    id: 'pick_file_button',
+		    click: function() {
+                $('#new_file').click();
+            }
+		  },
+		  Cancel: function() {
+		    $('#upload-collation-dialog').dialog('close');
+		  }
+		},
+		open: function() {
+			// Set the upload button to its correct state based on
+			// whether a file is loaded
+			file_selected( $('#new_file').get(0) );
+			$('#upload_status').empty();
+		}
+	}).ajaxError( function(event, jqXHR, ajaxSettings, thrownError) {
+		// Reset button state
+		file_selected( $('#new_file').get(0) );
+		// Display error message if applicable
+    	if( ajaxSettings.url.indexOf( 'newtradition' ) > -1 
+    		&& ajaxSettings.type == 'POST' ) {
+			display_error( jqXHR, $("#upload_status") );
+    	}
+	});;
+	
+	$('#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 );
+        }
+    });
+    
+});