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pdf_view.js
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pdf_view.js
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Tabula = Tabula || {};
var clip = null;
PDF_ID = window.location.pathname.split('/')[2];
Tabula.LazyLoad = 10; // max number of pages around the cursor to show (2x Tabula.LazyLoad pages are shown)
Tabula.HideOnLazyLoad = false; // ideally, set to true, but this requires differently positioned selections, see https://github.com/tabulapdf/tabula/issues/245#issuecomment-75182061
ZeroClipboard.config( { swfPath: "/swf/ZeroClipboard.swf" } );
Tabula.Page = Backbone.Model.extend({
// number: null, //set on initialize
// width: null, //set on initialize
// height: null, //set on initialize
// rotation: null, //set on initialize
initialize: function(){
this.set('number_zero_indexed', this.get('number') - 1);
},
imageUrl: function(){
var resolution = Math.max(Tabula.pdf_view.pdf_document.get('thumbnail_sizes')) || 560;
this.set('image_url', '/pdfs/' + PDF_ID + '/document_'+resolution+'_' + this.get('number') + '.png');
return this.get('image_url');
}
});
Tabula.Pages = Backbone.Collection.extend({
model: Tabula.Page,
url: null, //set on initialize
comparator: 'number',
initialize: function(){
this.url = '/pdfs/' + PDF_ID + '/pages.json?_=' + Math.round(+new Date()).toString();
}
});
Tabula.Document = Backbone.Model.extend({
page_collection: null, //set on initialize
selections: null, //set on initialize
pdf_id: PDF_ID, //set on initialize
url: null, //set on initialize
initialize: function(options){
this.page_collection = new Tabula.Pages([], {pdf_document: this});
this.selections = new Tabula.Selections([], {pdf_document: this});
this.autodetected_selections = new Tabula.AutodetectedSelections([], {pdf_document: this});
this.url = '/pdf/' + this.pdf_id + '/metadata.json';
this.set('original_filename', '');
this.set('new_filename', false);
},
});
Tabula.Selection = Backbone.Model.extend({
pdf_id: PDF_ID,
initialize: function(){
_.bindAll(this, 'repeatLassos', 'toCoords');
},
updateCoords: function(){
var page = Tabula.pdf_view.pdf_document.page_collection.at(this.get('page_number') - 1);
var imageWidth = this.get('imageWidth');
var original_pdf_width = page.get('width');
var original_pdf_height = page.get('height');
var pdf_rotation = page.get('rotation');
var scale = (Math.abs(pdf_rotation) == 90 ? original_pdf_height : original_pdf_width) / imageWidth;
var rp = this.attributes.getDims().relativePos;
this.set({
x1: rp.left * scale,
x2: (rp.left + rp.width) * scale,
y1: rp.top * scale,
y2: (rp.top + rp.height) * scale,
width: rp.width * scale, // not used by Tabula right now, but used in the UI elsewhere
height: rp.height * scale, // not used by Tabula right now, but used in the UI elsewhere
});
},
toCoords: function(){
if (this.attributes.getDims){
this.updateCoords();
}
var selection_coords = {
page: this.get('page_number'),
extraction_method: this.get('extractionMethod') || 'guess',
selection_id: this.id,
x1: this.get('x1'),
x2: this.get('x2'),
y1: this.get('y1'),
y2: this.get('y2'),
width: this.get('width'),
height: this.get('height')
};
return selection_coords;
},
repeatLassos: function() {
Tabula.pdf_view.pdf_document.page_collection.each(_.bind(function(page){
if(this.get('page_number') < page.get('number')){ // for each page after this one,
new_selection = this.clone(); // and create a new Selection.
new_selection.set('page_number', page.get('number'));
this.collection.add(Tabula.pdf_view.renderSelection(new_selection.toCoords()));
/* which causes thumbnails to be created, Download All button to know about these selections. */
}
}, this));
},
});
// Not currently used at all.
Tabula.Options = Backbone.Model.extend({
initialize: function(){
_.bindAll(this, 'write');
// this.set('multiselect_mode', localStorage.getItem("tabula-multiselect-mode") !== "false");
},
write: function(){
// localStorage.setItem("tabula-multiselect-mode", this.get('multiselect_mode'));
}
});
/* What the hell are you doing here, Jeremy?
The canonical store of selections now needs to be in Backbone, not in imgareaselect.
The UI can listen to the Selections; imgAreaselect creates adds to the collection,
causing the thumbnail to be drawn.
Clearing or repeating is much easier, because we don't have to mess around with the UI.
Querying all is likewise easy.
We could also store extraction option info on the selections, if we want.
On imgareaselect's _onSelectEnd, add the selection to Selections
On Selections's remove (or change), find the right imgAreaSelect
*/
Tabula.Selections = Backbone.Collection.extend({
// model: Tabula.Selection,
comparator: 'page_number',
updateOrCreateByVendorSelectorId: function(vendorSelection, pageNumber, imageWidth){
var selection = this.get(vendorSelection.id);
if (selection) { // if it already exists
selection.set(_.omit(vendorSelection, 'id'));
}
else {
new_selection_args = _.extend({'page_number': pageNumber,
'imageWidth': imageWidth,
'extraction_method': Tabula.pdf_view.options.extraction_method,
'hidden': false,
'pdf_document': this.pdf_document},
vendorSelection);
selection = new Tabula.Selection(new_selection_args);
this.add(selection);
}
return selection;
},
createHiddenSelection: function(sel){
new_selection_args = _.extend({'page_number': sel.page,
'extraction_method': 'spreadsheet',
'id': String.fromCharCode(65 + Math.floor(Math.random() * 26)) + Date.now(),
'hidden': true,
'pdf_document': this.pdf_document},
sel);
selection = new Tabula.Selection(new_selection_args);
this.add(selection);
return selection;
}
});
Tabula.AutodetectedSelections = Tabula.Selections.extend({
url: null, //set on init
initialize: function(){
this.url = '/pdfs/' + PDF_ID + '/tables.json?_=' + Math.round(+new Date()).toString();
_.bindAll(this, 'updateOrCreateByVendorSelectorId');
},
parse: function(response){
// a JSON list of pages, which are each just a list of coords
var tables = [];
var selections = _(response).map(_.bind(function(page_tables, listIndex){
var pageIndex = listIndex + 1;
return _(page_tables).map(_.bind(function(tableCoords){
if(tableCoords[2] * tableCoords[3] < 400){ //exclude tiny autodetected selections
return null;
}
return {
x1: tableCoords[0],
y1: tableCoords[1],
x2: tableCoords[0] + tableCoords[2],
y2: tableCoords[1] + tableCoords[3],
width: tableCoords[2],
height: tableCoords[3],
page: pageIndex,
extraction_method: 'spreadsheet',
selection_id: null
};
}, this));
}, this));
return _.select(_.flatten(selections), function(i){ return i; });
}
});
Tabula.Query = Backbone.Model.extend({
//has selections, data
//pertains to DataView
// on modal exit, destroy this.pdf_view.query
// on selection end or download all button, create this.pdf_view.query
// in the modal, modify and requery.
initialize: function(){
// should be inited with list_of_coords
_.bindAll(this, 'doQuery', 'setExtractionMethod', 'convertTo', 'convertToCSV',
'convertToTabulaExtractorScript', 'convertToBoundingBoxJSON');
},
convertTo: function(format){
if(!this.get('data')){
throw Error("You need to query for data before converting it locally.");
}else{
switch(format.toLowerCase()){
// case "XML":
// return this.convertToXML();
// break;
case "bbox":
return this.convertToBoundingBoxJSON();
case "tsv":
return this.convertToCSV("\t");
case "csv":
return this.convertToCSV();
case "\uD83D\uDCA9SV":
return this.convertToCSV("\uD83D\uDCA9SV");
case "script":
return this.convertToTabulaExtractorScript();
default:
throw Error("Unknown format: " + format);
}
}
},
convertToCSV: function(delimiter_maybe_undef){
var delimiter = typeof delimiter_maybe_undef == "undefined" ? ',' : delimiter_maybe_undef
var csv = _(this.get('data')).chain().pluck('data').map(function(table){
return _(table).chain().map(function(row){
return _.map(row, function(cell){
var text = cell.text;
text = text.replace("\"", "\\\""); //escape quotes
text = text.indexOf(delimiter) > -1 ? "\"" + text + "\"" : text; //enquote cells containing the delimiter.
return text;
}).join(delimiter);
}).value();
}).flatten(true).value().join("\n");
return csv;
},
convertToBoundingBoxJSON: function(){
return JSON.stringify(this.get('list_of_coords'), null, 4);
},
convertToTabulaExtractorScript: function(){
return _(this.get('list_of_coords')).map(function(c){
var extraction_method_switch = "";
if(c.extraction_method == "original"){
var extraction_method_switch = "--no-spreadsheet";
}else if(c.extraction_method == "spreadsheet"){
var extraction_method_switch = "--spreadsheet";
}
return "tabula "+extraction_method_switch+" -a "+roundTo(c.y1, 3)+","+roundTo(c.x1, 3)+","+roundTo(c.y2, 3)+","+roundTo(c.x2, 3)+" -p "+c.page+" \"$1\"";
}).join("\n");
},
doQuery: function(options) {
this.query_data = {
'coords': JSON.stringify(this.get('list_of_coords')),
'new_filename': null,
};
// print selection coordinates to the console
// way easier FOR NOW than downloading the script/JSON
console.log(_.map(this.get('list_of_coords'), function(l){ return [l.y1, l.x1, l.y2, l.x2].join(', '); }).join("\n") );
// shallow copy the selections collection
// so if hte user somehow changes the selections between starting the query and it finishing,
// there isn't an error
var stashed_selections = new Tabula.Selections(Tabula.pdf_view.pdf_document.selections.models.slice());
this.trigger("tabula:query-start");
window.tabula_router.navigate('pdf/' + PDF_ID + '/extract'); // TODO: this should probably go in a view!! -JBM
$.ajax({
type: 'POST',
url: '/pdf/' + PDF_ID + '/data',
data: this.query_data,
success: _.bind(function(resp) {
this.set('data', resp);
if (resp.length > 0) {
// this only needs to happen on the first select, when we don't know what the extraction method is yet
// (because it's set by the heuristic on the server-side).
// TODO: only execute it when one of the list_of_coords has guess or undefined as its extraction_method
_(_.zip(this.get('list_of_coords'), resp)).each(function(stuff, i){
var coord_set = stuff[0];
var resp_item = stuff[1];
if (stashed_selections.get(coord_set.selection_id)){
stashed_selections.get(coord_set.selection_id).
set('extraction_method', resp_item["extraction_method"]);
}
coord_set["extraction_method"] = resp_item["extraction_method"];
});
this.trigger("tabula:query-success");
if (options !== undefined && _.isFunction(options.success)){
Tabula.pdf_view.options.success(resp);
}
} else {
// no tables were extracted
var error_message = "No tables were extracted. Please try selecting a different extraction method from the sidebar.";
this.triggerQueryError(error_message, options);
}
}, this),
error: _.bind(function(xhr, status, error) {
console.log("error!", xhr, status);
var error_text = xhr.responseText;
window.raw_xhr_responseText = xhr.responseText; // for consoles, etc.
if(error_text.indexOf("DOCTYPE") != -1){ // we're in Jar/Jetty/whatever land, not rackup land
var error_html = $('<div></div>').html( error_text );
var summary = error_html.find('#summary').text().trim();
var meta = error_html.find('#meta').text().trim();
var info = error_html.find('#info').text().trim();
error_text = [summary, meta, info].join("<br />");
}
this.triggerQueryError(error_text, options);
}, this),
});
},
triggerQueryError: function(error_text, options){
var debugging_text = "Tabula API version: " + Tabula.api_version + "\nFilename: " + Tabula.pdf_view.pdf_document.get('original_filename') + "\n" + error_text
this.set('error_message', debugging_text);
this.trigger("tabula:query-error");
if (options !== undefined && _.isFunction(options.error))
options.error(resp);
},
setExtractionMethod: function(extractionMethod){
_(this.get('list_of_coords')).each(function(coord_set){ coord_set['extraction_method'] = extractionMethod; });
},
getDataArray: function(){
// this.data is a list of responses (because we sent a list of coordinate sets)
// $.each( _.pluck(this.model.get('data'), 'data'), function(i, rows) {
// $.each(rows, function(j, row) {
// tableHTML += '<tr><td>' + _.pluck(row, 'text').join('</td><td>') + '</td></tr>';
// });
// });
if (!this.get('data')){ return []; }
var data = _(this.get('data')).chain().pluck('data').map(function(table){
return _(table).chain().map(function(row){
return _.pluck(row, 'text');
}).value();
})/*.flatten(true)*/.value();
return data.length == 1 && data[0].length === 0 ? [] : data; // checking whether there's no data, i.e. data == [[]]
}
});
Tabula.DataView = Backbone.View.extend({ // one per query object.
el: '#tabula-dataview',
template: _.template($('#templates #export-page-template').html().replace(/nestedscript/g, 'script')),
events: {
'click .extraction-method-btn:not(.active)': 'queryWithToggledExtractionMethod',
'click #download-data': 'setFormAction',
'keyup .filename': 'updateFilename',
//N.B.: Download button (and format-specific download buttons) are an HTML form, so not handled here.
//TODO: handle flash clipboard thingy here.
// 'click #copy-csv-to-clipboard':
'click #revise-selections': 'closeAndRenderSelectionView'
},
pdf_view: null, //added on create
extractionMethod: "guess",
initialize: function(stuff){
_.bindAll(this, 'render', 'renderFlashClipboardNonsense', 'updateFilename', 'queryWithToggledExtractionMethod', 'closeAndRenderSelectionView', 'setFormAction');
this.pdf_view = stuff.pdf_view;
this.listenTo(this.model, 'tabula:query-start', this.render);
this.listenTo(this.model, 'tabula:query-success', this.render);
this.listenTo(this.model, 'tabula:query-error', this.render);
},
disableDownloadButton: function(){
$('#download-data').addClass('download-in-progress');
$('#download-data').prop('disabled', 'disabled');
window.setTimeout( function(){
$('#download-data').removeClass('download-in-progress');
$('#download-data').removeProp('disabled');
}, 2000);
},
updateFilename: function(){
var new_filename = this.$el.find('#control-panel input.filename').val();
if(new_filename.length){
this.pdf_view.pdf_document.set('new_filename', new_filename);
}
},
closeAndRenderSelectionView: function(){
window.tabula_router.navigate('pdf/' + PDF_ID);
this.$el.empty();
this.undelegateEvents();
this.pdf_view.$el.show();
this.pdf_view.render();
var oldSelections = this.pdf_view.pdf_document.selections.models.map(function(sel){
var selection = Tabula.pdf_view.renderSelection(sel.toCoords());
// selection.attributes.rebind(); // o. m. g.
return selection;
});
this.pdf_view.pdf_document.selections.reset(oldSelections);
},
setFormAction: function(e){
var formActionUrl = $(e.currentTarget).data('action');
this.$el.find('#download-form').attr('action', formActionUrl);
this.$el.find('#download-form').submit();
this.disableDownloadButton();
},
render: function(e){
document.title="Export Data | Tabula";
var uniq_extraction_methods = _.uniq(_(this.model.get('list_of_coords')).pluck('extraction_method'));
// save the current scroll position (if unset), then scroll to the top
if(!Tabula.pdf_view.selectionScrollTop){
Tabula.pdf_view.selectionScrollTop = $(document).scrollTop();
}
$(document).scrollTop(0);
//TODO: move flash_borked to this object (dataview) away from pdf_view
$('body').removeClass('page-selections');
$('body').addClass('page-export');
this.delegateEvents();
this.pdf_view.$el.hide();
$('.selection-box').css('visibility', 'hidden');
$('.table-region').remove();
$('.selection-show').remove(); // nuke thumbs, we'll put 'em back in a second
this.$el.html(this.template({
pdf_id: PDF_ID,
data: this.model.getDataArray(),
loading: !(this.model.get('data') || this.model.get('error_message')),
error_message: this.model.get('error_message')
}));
this.$el.find('#control-panel').html(
_.template($('#templates #export-control-panel-template').html().replace(/nestedscript/g, 'script'))(
_(this.pdf_view.pdf_document.attributes).extend({
pdf_id: PDF_ID,
list_of_coords: JSON.stringify(this.model.get('list_of_coords')),
copyDisabled: Tabula.pdf_view.flash_borked ? 'disabled="disabled" data-toggle="tooltip" title="'+Tabula.pdf_view.flash_borken_message+'"' : '',
disableIfNoData: (_.isNull(this.model.get('data')) || typeof(this.model.get('data')) === "undefined") ? 'disabled="disabled"' : ''
})
));
this.$el.find('#sidebar').html(
_.template($('#templates #export-page-sidebar-template').html().replace(/nestedscript/g, 'script')) (
{
pdf_id: PDF_ID,
disableExtractionMethodButtons: _.isNull(this.model.data) || uniq_extraction_methods.length > 1 ? 'disabled="disabled"' : '',
}
));
this.renderFlashClipboardNonsense();
if(!this.model.get('data')) this.startSpinner();
if (uniq_extraction_methods.length == 1){
// prospectively support renaming the methods in tabula-extractor to "lattice"/"stream"
// and cope with "basic" extraction algorithm ID in tabula-java
// https://github.com/tabulapdf/tabula-extractor/issues/96
if (["basic", "original", "stream"].indexOf(uniq_extraction_methods[0]) > -1){
uniq_extraction_methods[0] = "original";
}else if(["spreadsheet", "lattice"].indexOf(uniq_extraction_methods[0]) > -1){
uniq_extraction_methods[0] = "spreadsheet";
}
this.$el.find('#' + uniq_extraction_methods[0] + '-method-btn').button('toggle');
}else{
console.log("A mix of unique extraction methods found, not selecting either extraction method radio button: " + uniq_extraction_methods.join(", "))
}
this.$el.find('.has-tooltip').tooltip();
return this;
},
startSpinner: function(){
var SPINNER_OPTS = {
lines: 10, // The number of lines to draw
length: 5, // The length of each line
width: 2, // The line thickness
radius: 5, // The radius of the inner circle
corners: 1, // Corner roundness (0..1)
rotate: 0, // The rotation offset
direction: 1, // 1: clockwise, -1: counterclockwise
color: '#000', // #rgb or #rrggbb
speed: 1.1, // Rounds per second
trail: 60, // Afterglow percentage
shadow: false, // Whether to render a shadow
hwaccel: true, // Whether to use hardware acceleration
className: 'spinner', // The CSS class to assign to the spinner
zIndex: 2e9, // The z-index (defaults to 2000000000)
top: 'auto', // Top position relative to parent in px
left: 'auto' // Left position relative to parent in px
};
new Spinner(SPINNER_OPTS).spin($('#spinner').get(0));
},
renderFlashClipboardNonsense: function(){
if(!Tabula.pdf_view.client){
try{
Tabula.pdf_view.client = new ZeroClipboard();
}catch(e){
this.$el.find('#copy-csv-to-clipboard').hide();
}
}
if( !Tabula.pdf_view.flash_borked ){
Tabula.pdf_view.client.on( 'ready', _.bind(function(event) {
Tabula.pdf_view.client.clip( this.$el.find("#copy-csv-to-clipboard") );
Tabula.pdf_view.client.on( 'copy', _.bind(function(event) {
var clipboard = event.clipboardData;
console.log('clippy thingy clicked', $('#download-form select').val());
var button_text = this.$el.find("#copy-csv-to-clipboard .clipboard-text");
button_text.text("Copied!");
window.setTimeout(_.bind(function(){
button_text.text("Copy to Clipboard");
},this), 2000);
var tableData = Tabula.pdf_view.query.convertTo($('#download-form select').val());
clipboard.setData( 'text/plain', tableData );
}, this) );
this.$el.find('.modal-footer button').prop('disabled', '');
}, this) );
Tabula.pdf_view.client.on( 'error', _.bind(function(event) {
//disable all clipboard buttons, add tooltip, event.message
Tabula.pdf_view.flash_borked = true;
Tabula.pdf_view.flash_borken_message = event.message;
this.$el.find('#copy-csv-to-clipboard').addClass('has-tooltip').tooltip();
console.log( 'ZeroClipboard error of type "' + event.name + '": ' + event.message );
ZeroClipboard.destroy();
this.$el.find('.modal-footer button').prop('disabled', '');
},this) );
}
return this;
},
queryWithToggledExtractionMethod: function(e){
this.model.set('data', null);
var extractionMethod = $(e.currentTarget).data('method');
this.pdf_view.options.set('extraction_method', extractionMethod);
Tabula.pdf_view.query.setExtractionMethod(extractionMethod);
Tabula.pdf_view.query.doQuery();
},
});
Tabula.DocumentView = Backbone.View.extend({ // Singleton
events: {
},
pdf_view: null, //added on create
page_views: {},
rectangular_selector: null,
_selectionsGetter: function(target) {
return _(Tabula.pdf_view.pdf_document.selections.where({page_number: $(target).data('page')})).map(function(i){ return i.attributes; });
},
initialize: function(stuff){
_.bindAll(this, 'render', 'removePage', '_onRectangularSelectorEnd', '_selectionsGetter');
this.pdf_view = stuff.pdf_view;
this.listenTo(this.collection, 'remove', this.removePage);
// attach rectangularSelector to main page container
this.rectangular_selector = new RectangularSelector(
this.$el,
{
selector: '#pages-container .pdf-page img',
end: this._onRectangularSelectorEnd,
areas: this._selectionsGetter,
validSelection: function(selection) {
return (selection.absolutePos.width > $(selection.pageView).width() * 0.01) &&
(selection.absolutePos.height > $(selection.pageView).height() * 0.01);
}
}
);
},
// listens to mouseup of RectangularSelector
_onRectangularSelectorEnd: function(d) {
var page_number = $(d.pageView).data('page');
var pv = this.page_views[page_number];
var rs = new ResizableSelection({
position: d.absolutePos,
target: pv.$el.find('img'),
areas: this._selectionsGetter
});
rs.on({
resize: _.debounce(pv._onSelectChange, 100),
remove: pv._onSelectCancel
});
pv._onSelectEnd(rs);
this.$el.append(rs.el);
rs.$el.css('z-index', 100 - this._selectionsGetter($(d.pageView)).length);
},
removePage: function(pageModel){
var page_view = this.page_views[pageModel.get('number')];
page_view.$el.fadeOut(200, function(){
deleted_page_height = page_view.$el.height();
deleted_page_top = page_view.$el.offset()["top"];
page_view.remove();
});
},
render: function(){
if(!Tabula.LazyLoad){ // old-style, non-lazyload behavior
_(this.page_views).each(_.bind(function(page_view, index){
var already_on_page = $('#page-' + parseInt(index)+1).length;
if(!already_on_page) this.$el.append(page_view.render().el);
}, this));
}else{
//useful in the console for debugging:
// $('.pdf-page:visible').map(function(i, el){ return $(el).find('img').data('page') }).get();
// just so pages end up in the right order, we have to loop AWAY FROM the cursor in both directions
// so if the cursor is at 1.
for (var number=Tabula.pdf_view.lazyLoadCursor;number>0;number--){
var page_view = this.page_views[number];
if(!page_view) continue; // this is the first render, and there are no pages (probably!)
var page_el = $('#page-' + number);
var visible_on_page = page_el.filter(':visible').length;
if(visible_on_page && Tabula.HideOnLazyLoad){
if(Math.abs(Tabula.pdf_view.lazyLoadCursor - number) >= Tabula.LazyLoad ) {
$('#page-' + number).hide();
// console.log('hide', number)
}
}else{
if(Math.abs(Tabula.pdf_view.lazyLoadCursor - number) < Tabula.LazyLoad ) {
if(page_el.length){
page_view.$el.show();
// console.log('show ' + number);
}else{
this.$el.prepend(page_view.render().el);
}
}
}
}
for (var number=Tabula.pdf_view.lazyLoadCursor+1;number<=_(this.page_views).keys().length;number++){
var page_view = this.page_views[number];
if(!page_view) continue; // this is the first render, and there are no pages (probably!)
var page_el = $('#page-' + number);
var visible_on_page = page_el.filter(':visible').length;
if(visible_on_page && Tabula.HideOnLazyLoad){
if(Math.abs(Tabula.pdf_view.lazyLoadCursor - number) >= Tabula.LazyLoad ) {
$('#page-' + number).hide();
}
}else{
if(Math.abs(Tabula.pdf_view.lazyLoadCursor - number) < Tabula.LazyLoad ) {
if(page_el.length){
page_view.$el.show();
// console.log('show ' + number);
}else{
this.$el.append(page_view.render().el);
}
}
}
}
}
// should remove the "hidden" selections
// then should render the selections for this page from autodetectedSelections the "normal" way.
Tabula.pdf_view.pdf_document.selections.filter(function(sel){ return sel.get('hidden') && sel.get('page') <= number}).map(function(hidden_selection){
Tabula.pdf_view.pdf_document.selections.remove(hidden_selection);
var new_selection = Tabula.pdf_view.renderSelection(hidden_selection.attributes); // adds it to Tabula.pdf_view.pdf_document.selections
return new_selection;
});
return this;
}
});
Tabula.PageView = Backbone.View.extend({ // one per page of the PDF
document_view: null, //added on create
className: 'pdf-page',
iasAlreadyInited: false,
selections: null,
id: function(){
return 'page-' + this.model.get('number');
},
template: _.template($('#templates #page-template').html().replace(/nestedscript/g, 'script')) ,
'events': {
// 'click i.rotate-left i.rotate-right': 'rotate_page',
},
initialize: function(stuff){
this.pdf_view = stuff.pdf_view;
_.bindAll(this, 'rotate_page', 'createTables',
'_onSelectStart', '_onSelectChange', '_onSelectEnd', '_onSelectCancel', 'render');
this.listenTo(Tabula.pdf_view.pdf_document, 'change', function(){ this.render(); });
this.listenTo(Tabula.pdf_view.pdf_document, 'change', function(){ this.render(); });
},
render: function(){
this.$el.html(this.template({
'number': this.model.get('number'),
'image_url': this.model.imageUrl()
}));
this.$el.find('img').attr('data-page', this.model.get('number'))
.attr('data-original-width', this.model.get('width'))
.attr('data-original-height', this.model.get('height'))
.attr('data-rotation', this.model.get('rotation'));
this.$image = this.$el.find('img');
return this;
},
createTables: function(asfd){
this.iasAlreadyInited = true;
},
_onSelectStart: function(selection) {
Tabula.pdf_view.pdf_document.selections.updateOrCreateByVendorSelectorId(selection,
this.model.get('number'),
this.$image.width());
},
_onSelectChange: function(selection) {
Tabula.pdf_view.pdf_document.selections.updateOrCreateByVendorSelectorId(selection,
this.model.get('number'),
this.$image.width());
},
_onSelectEnd: function(selection) {
var sel = Tabula.pdf_view.pdf_document.selections.updateOrCreateByVendorSelectorId(selection,
this.model.get('number'),
this.$image.width());
// deal with invalid/too-small selections somehow (including thumbnails)
if (selection.width === 0 && selection.height === 0) {
$('#thumb-' + this.$image.attr('id') + ' #vendorSelection-show-' + selection.id).css('display', 'none');
selection.remove();
}
// if this is not the last page
if(this.model != this.model.collection.last()) {
var but_id = this.model.get('number') + '-' + selection.id; //create a "Repeat this Selection" button
var button = $('<button class="btn btn-default repeat-lassos" id="'+but_id+'">Repeat this Selection</button>');
button.data("selectionId", selection.id);
selection.$el.append(button);
}
Tabula.pdf_view.components['control_panel'].render(); // deals with buttons that need blurred out if there's zero selections, etc.
},
// vendorSelection
_onSelectCancel: function(selection) {
// remove repeat lassos button
var but_id = this.$image.attr('id') + '-' + selection.id;
$('button#' + but_id).remove();
// find and remove the canceled selection from the collection of selections. (triggering remove events).
var sel = Tabula.pdf_view.pdf_document.selections.get(selection.id);
removed_selection = Tabula.pdf_view.pdf_document.selections.remove(sel);
Tabula.pdf_view.components['control_panel'].render(); // deal with buttons that need blurred out if there's zero selections, etc.
},
rotate_page: function(t) {
alert('not implemented');
}
});
Tabula.ControlPanelView = Backbone.View.extend({ // only one
events: {
'click #clear-all-selections': 'clearAllSelections',
'click #restore-detected-tables': 'restoreDetectedTables',
'click #all-data': 'queryAllData',
'click #repeat-lassos': 'repeatLassos',
},
template: _.template($('#templates #select-control-panel-template').html().replace(/nestedscript/g, 'script')),
/* in case there's a PDF with a complex format that's repeated on multiple pages */
repeatFirstPageLassos: function(){
alert('not yet implemented');
return;
/* TODO: write this */
},
clearAllSelections: function(){
_(Tabula.pdf_view.pdf_document.selections.models.slice()).each(function(i){ if(typeof i.attributes.remove !== "undefined") i.attributes.remove(); }); // call remove() on the vendorSelection of each seleciton; except for "hidden" selections that don't have one.
Tabula.pdf_view.pdf_document.selections.reset([]);
Tabula.pdf_view.components['control_panel'].render(); // deal with buttons that need blurred out if there's zero selections, etc.
// reset doesn't trigger the right events because we have to remove from the collection and from the page (with selection.remove())
// we can't use _.each because we're mutating the collection that we're iterating over
// ugh
},
restoreDetectedTables: function(){
var autodetected_selections = this.pdf_view.pdf_document.autodetected_selections.models.map(function(sel){
return Tabula.pdf_view.renderSelection(sel.attributes);
});
this.pdf_view.pdf_document.selections.reset(autodetected_selections);
},
initialize: function(stuff){
this.pdf_view = stuff.pdf_view;
_.bindAll(this, 'queryAllData', 'render');
this.listenTo(this.pdf_view.pdf_document, 'sync', this.render );
},
queryAllData : function(){
var list_of_all_coords = Tabula.pdf_view.pdf_document.selections.invoke("toCoords");
//TODO: figure out how to handle extraction methods when there are multiple selections
// should it be set globally, or per selection?
// actually, how to handle extraction method is a bit of an open question.
// should we support in the UI extraction methods per selection?
// if so, what does the modal show if its showing results from more than one selection?
// maybe it only shows them if they match?
// or not at all ever?
// but then we need to make it clearer in the UI that you are "editing" a selection.
// which will require different reactions with multiselect mode:
// when you finish a query, then still pop up its data.
// when you click or move an already-selected query, then you're "editing" it?
// hmm.
Tabula.pdf_view.query = new Tabula.Query({list_of_coords: list_of_all_coords, extraction_method: 'guess'});
Tabula.pdf_view.createDataView();
Tabula.pdf_view.query.doQuery();
},
render: function(){
var numOfSelectionsOnPage = this.pdf_view.totalSelections();
this.$el.html(this.template(
_(this.pdf_view.pdf_document.attributes).extend({
'disable_clear_all_selections': numOfSelectionsOnPage <= 0 ? 'disabled="disabled"' : '' ,
'disable_download_all': numOfSelectionsOnPage <= 0 ? 'disabled="disabled"' : '',
// three states: autodetection still incomplete, autodetection done but no tables found, autodetection done and tables found
'restore_detected_tables': this.pdf_view.hasAutodetectedTables ? "autodetect-finished" : "autodetect-in-progress",
'disable_detected_tables': numOfSelectionsOnPage > 0 || this.pdf_view.pdf_document.autodetected_selections.size() === 0 ? 'disabled="disabled"' : ''
})));
return this;
},
});
Tabula.SidebarView = Backbone.View.extend({ // only one
tagName: 'ul',
className: 'thumbnail-list',
thumbnail_views: {},
pdf_view: null, // defined on initialize
initialize: function(stuff){
this.pdf_view = stuff.pdf_view;
_.bindAll(this, 'addSelectionThumbnail', 'removeSelectionThumbnail', 'changeSelectionThumbnail',
'removeThumbnail', 'render');
this.listenTo(this.collection, 'remove', this.removeThumbnail);
this.listenTo(this.pdf_view.pdf_document.selections, 'sync', this.render);
this.listenTo(this.pdf_view.pdf_document.selections, 'add', this.addSelectionThumbnail); // render a thumbnail selection
this.listenTo(this.pdf_view.pdf_document.selections, 'change', this.changeSelectionThumbnail); // render a thumbnail selection
this.listenTo(this.pdf_view.pdf_document.selections, 'remove', this.removeSelectionThumbnail); // remove a thumbnail selection
},
addSelectionThumbnail: function (new_selection){
if(this.thumbnail_views[new_selection.get('page_number')].$el.find('img').length){
this.thumbnail_views[new_selection.get('page_number')].createSelectionThumbnail(new_selection);
}
},
changeSelectionThumbnail: function (selection){
this.thumbnail_views[selection.get('page_number')].changeSelectionThumbnail(selection);
},
removeSelectionThumbnail: function (selection){
this.thumbnail_views[selection.get('page_number')].removeSelectionThumbnail(selection);
},
removeThumbnail: function(pageModel){
var thumbnail_view = this.thumbnail_views[pageModel.get('number')];
thumbnail_view.$el.fadeOut(200, function(){ thumbnail_view.remove(); });
},
render: function(){
if(!Tabula.LazyLoad){ // old-style, un-lazyload behavior where all pages are shown at once.
_(this.thumbnail_views).each(_.bind(function(thumbnail_view, index){
var already_on_page = $('#page-' + parseInt(index)+1).length;
if(!already_on_page) this.$el.append(thumbnail_view.render().el);
}, this));
}else{
for (var number=Tabula.pdf_view.lazyLoadCursor;number>0;number--){
var thumbnail_view = this.thumbnail_views[number];
if(!thumbnail_view) continue; // this is the first render, and there are no pages (or there's a problem!)
var thumb_el = $('#thumb-page-' + number);
var visible_on_page = thumb_el.filter(':visible').length;
if(visible_on_page && Tabula.HideOnLazyLoad){
if(Math.abs(Tabula.pdf_view.lazyLoadCursor - number) >= Tabula.LazyLoad ) {
$('#thumb-page-' + number).hide();
// console.log('hide', number)
}
}else{
if(Math.abs(Tabula.pdf_view.lazyLoadCursor - number) < Tabula.LazyLoad ) {
if(thumb_el.length){
thumbnail_view.$el.show();
// console.log('show ' + number);
}else{
this.$el.prepend(thumbnail_view.render().el);
// console.log('append ' + number);
}
}
}
}
for (var number=Tabula.pdf_view.lazyLoadCursor+1;number<=_(this.thumbnail_views).keys().length;number++){
var thumbnail_view = this.thumbnail_views[number];
if(!thumbnail_view) continue; // this is the first render, and there are no pages (probably!)
var thumb_el = $('#thumb-page-' + number);
var visible_on_page = thumb_el.filter(':visible').length;
if(visible_on_page && Tabula.HideOnLazyLoad){
if(! (Math.abs(Tabula.pdf_view.lazyLoadCursor - number) < Tabula.LazyLoad )) {
$('#thumb-page-' + number).hide();
// console.log('hide', number)
}
}else{
if(Math.abs(Tabula.pdf_view.lazyLoadCursor - number) < Tabula.LazyLoad ) {
if(thumb_el.length){
thumbnail_view.$el.show();
// console.log('show ' + number);
}else{
this.$el.append(thumbnail_view.render().el);
// console.log('append ' + number);
}
}
}
}
}
return this;
}
});
Tabula.ThumbnailView = Backbone.View.extend({ // one per page
'events': {
// on load, create an empty div with class 'selection-show' to be the selection thumbnail.
'load .thumbnail-list li img': function() { $(this).after($('<div />', { class: 'selection-show'})); },
'click i.delete-page': 'deletePage',
},
tagName: 'li',
className: "page-thumbnail page",
id: function(){
return 'thumb-page-' + this.model.get('number');
},
// initialize: function(){
// },
template: _.template($('#templates #thumbnail-template').html().replace(/nestedscript/g, 'script')),
initialize: function(){
_.bindAll(this, 'render', 'createSelectionThumbnail', 'changeSelectionThumbnail', 'removeSelectionThumbnail');
this.listenTo(Tabula.pdf_view.pdf_document, 'change', function(){ this.render(); });
this.listenTo(Tabula.pdf_view.pdf_document, 'change', function(){ this.render(); });
},
deletePage: function(){
if (!confirm('Delete page ' + this.model.get('number') + '?')) return;
Tabula.pdf_view.pdf_document.page_collection.remove( this.model );
},
render: function(){
this.$el.html(this.template({
'number': this.model.get('number'),
'image_url': this.model.imageUrl()
}));
// stash some selectors (which don't exist at init)
this.$img = this.$el.find('img');
this.img = this.$img[0];
this.$img.attr('data-page', this.model.get('number'));
return this;
},
createSelectionThumbnail: function(selection) {
var $sshow = $('<div class="selection-show" id="selection-show-' + selection.cid + '" />').css('display', 'block');
this.$el.append( $sshow );
this.changeSelectionThumbnail(selection);
},
changeSelectionThumbnail: function(selection){
var $sshow = this.$el.find('#selection-show-' + selection.cid);
// don't break everything if the sidebar happens to be broken.
var thumbScale = this.$img ? this.$img.width() / selection.get('imageWidth') : 0;