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view-slickgrid.js
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view-slickgrid.js
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/*jshint multistr:true */
this.recline = this.recline || {};
this.recline.View = this.recline.View || {};
(function($, my) {
// ## SlickGrid Dataset View
//
// Provides a tabular view on a Dataset, based on SlickGrid.
//
// https://github.com/mleibman/SlickGrid
//
// Initialize it with a `recline.Model.Dataset`.
my.SlickGrid = Backbone.View.extend({
tagName: "div",
className: "recline-slickgrid",
initialize: function(modelEtc) {
var self = this;
this.el = $(this.el);
_.bindAll(this, 'render');
this.model.currentDocuments.bind('add', this.render);
this.model.currentDocuments.bind('reset', this.render);
this.model.currentDocuments.bind('remove', this.render);
var state = _.extend({
hiddenColumns: [],
columnsOrder: [],
columnsSort: {},
columnsWidth: [],
fitColumns: false
}, modelEtc.state
);
this.state = new recline.Model.ObjectState(state);
this.bind('view:show',function(){
// If the div is hidden, SlickGrid will calculate wrongly some
// sizes so we must render it explicitly when the view is visible
if (!self.rendered){
if (!self.grid){
self.render();
}
self.grid.init();
self.rendered = true;
}
self.visible = true;
});
this.bind('view:hide',function(){
self.visible = false;
});
},
events: {
},
render: function() {
var self = this;
this.el = $(this.el);
var options = {
enableCellNavigation: true,
enableColumnReorder: true,
explicitInitialization: true,
syncColumnCellResize: true,
forceFitColumns: this.state.get('fitColumns')
};
// We need all columns, even the hidden ones, to show on the column picker
var columns = [];
_.each(this.model.fields.toJSON(),function(field){
var column = {id:field['id'],
name:field['label'],
field:field['id'],
sortable: true,
minWidth: 80};
var widthInfo = _.find(self.state.get('columnsWidth'),function(c){return c.column == field.id});
if (widthInfo){
column['width'] = widthInfo.width;
}
columns.push(column);
});
// Restrict the visible columns
var visibleColumns = columns.filter(function(column) {
return _.indexOf(self.state.get('hiddenColumns'), column.id) == -1;
});
// Order them if there is ordering info on the state
if (this.state.get('columnsOrder')){
visibleColumns = visibleColumns.sort(function(a,b){
return _.indexOf(self.state.get('columnsOrder'),a.id) > _.indexOf(self.state.get('columnsOrder'),b.id);
});
columns = columns.sort(function(a,b){
return _.indexOf(self.state.get('columnsOrder'),a.id) > _.indexOf(self.state.get('columnsOrder'),b.id);
});
}
// Move hidden columns to the end, so they appear at the bottom of the
// column picker
var tempHiddenColumns = [];
for (var i = columns.length -1; i >= 0; i--){
if (_.indexOf(_.pluck(visibleColumns,'id'),columns[i].id) == -1){
tempHiddenColumns.push(columns.splice(i,1)[0]);
}
}
columns = columns.concat(tempHiddenColumns);
var data = [];
this.model.currentDocuments.each(function(doc){
var row = {};
self.model.fields.each(function(field){
row[field.id] = doc.getFieldValue(field);
});
data.push(row);
});
this.grid = new Slick.Grid(this.el, data, visibleColumns, options);
// Column sorting
var gridSorter = function(field, ascending, grid, data){
data.sort(function(a, b){
var result =
a[field] > b[field] ? 1 :
a[field] < b[field] ? -1 :
0
;
return ascending ? result : -result;
});
grid.setData(data);
grid.updateRowCount();
grid.render();
}
var sortInfo = this.state.get('columnsSort');
if (sortInfo){
var sortAsc = !(sortInfo['direction'] == 'desc');
gridSorter(sortInfo.column, sortAsc, self.grid, data);
this.grid.setSortColumn(sortInfo.column, sortAsc);
}
this.grid.onSort.subscribe(function(e, args){
gridSorter(args.sortCol.field,args.sortAsc,self.grid,data);
self.state.set({columnsSort:{
column:args.sortCol,
direction: (args.sortAsc) ? 'asc':'desc'
}});
});
this.grid.onColumnsReordered.subscribe(function(e, args){
self.state.set({columnsOrder: _.pluck(self.grid.getColumns(),'id')});
});
this.grid.onColumnsResized.subscribe(function(e, args){
var columns = args.grid.getColumns();
var defaultColumnWidth = args.grid.getOptions().defaultColumnWidth;
var columnsWidth = [];
_.each(columns,function(column){
if (column.width != defaultColumnWidth){
columnsWidth.push({column:column.id,width:column.width});
}
});
self.state.set({columnsWidth:columnsWidth});
});
var columnpicker = new Slick.Controls.ColumnPicker(columns, this.grid,
_.extend(options,{state:this.state}));
if (self.visible){
self.grid.init();
self.rendered = true;
} else {
// Defer rendering until the view is visible
self.rendered = false;
}
return this;
}
});
})(jQuery, recline.View);
/*
* Context menu for the column picker, adapted from
* http://mleibman.github.com/SlickGrid/examples/example-grouping
*
*/
(function ($) {
function SlickColumnPicker(columns, grid, options) {
var $menu;
var columnCheckboxes;
var defaults = {
fadeSpeed:250
};
function init() {
grid.onHeaderContextMenu.subscribe(handleHeaderContextMenu);
options = $.extend({}, defaults, options);
$menu = $('<ul class="dropdown-menu slick-contextmenu" style="display:none;position:absolute;z-index:20;" />').appendTo(document.body);
$menu.bind('mouseleave', function (e) {
$(this).fadeOut(options.fadeSpeed)
});
$menu.bind('click', updateColumn);
}
function handleHeaderContextMenu(e, args) {
e.preventDefault();
$menu.empty();
columnCheckboxes = [];
var $li, $input;
for (var i = 0; i < columns.length; i++) {
$li = $('<li />').appendTo($menu);
$input = $('<input type="checkbox" />').data('column-id', columns[i].id).attr('id','slick-column-vis-'+columns[i].id);
columnCheckboxes.push($input);
if (grid.getColumnIndex(columns[i].id) != null) {
$input.attr('checked', 'checked');
}
$input.appendTo($li);
$('<label />')
.text(columns[i].name)
.attr('for','slick-column-vis-'+columns[i].id)
.appendTo($li);
}
$('<li/>').addClass('divider').appendTo($menu);
$li = $('<li />').data('option', 'autoresize').appendTo($menu);
$input = $('<input type="checkbox" />').data('option', 'autoresize').attr('id','slick-option-autoresize');
$input.appendTo($li);
$('<label />')
.text('Force fit columns')
.attr('for','slick-option-autoresize')
.appendTo($li);
if (grid.getOptions().forceFitColumns) {
$input.attr('checked', 'checked');
}
$menu.css('top', e.pageY - 10)
.css('left', e.pageX - 10)
.fadeIn(options.fadeSpeed);
}
function updateColumn(e) {
if ($(e.target).data('option') == 'autoresize') {
var checked;
if ($(e.target).is('li')){
var checkbox = $(e.target).find('input').first();
checked = !checkbox.is(':checked');
checkbox.attr('checked',checked);
} else {
checked = e.target.checked;
}
if (checked) {
grid.setOptions({forceFitColumns:true});
grid.autosizeColumns();
} else {
grid.setOptions({forceFitColumns:false});
}
options.state.set({fitColumns:checked});
return;
}
if (($(e.target).is('li') && !$(e.target).hasClass('divider')) ||
$(e.target).is('input')) {
if ($(e.target).is('li')){
var checkbox = $(e.target).find('input').first();
checkbox.attr('checked',!checkbox.is(':checked'));
}
var visibleColumns = [];
var hiddenColumnsIds = [];
$.each(columnCheckboxes, function (i, e) {
if ($(this).is(':checked')) {
visibleColumns.push(columns[i]);
} else {
hiddenColumnsIds.push(columns[i].id);
}
});
if (!visibleColumns.length) {
$(e.target).attr('checked', 'checked');
return;
}
grid.setColumns(visibleColumns);
options.state.set({hiddenColumns:hiddenColumnsIds});
}
}
init();
}
// Slick.Controls.ColumnPicker
$.extend(true, window, { Slick:{ Controls:{ ColumnPicker:SlickColumnPicker }}});
})(jQuery);