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// $Id$
Drupal.behaviors.tableSelect = function (context) {
$('form table[th.select-all]:not(.tableSelect-processed)', context).each(Drupal.tableSelect);
}
Drupal.tableSelect = function() {
// Keep track of the table, which checkbox is checked and alias the settings.
var table = this, selectAll, checkboxes, lastChecked;
var strings = { 'selectAll': Drupal.t('Select all rows in this table'), 'selectNone': Drupal.t('Deselect all rows in this table') };
// Store the select all checkbox in a variable as we need it quite often.
selectAll = $('<input type="checkbox" class="form-checkbox" />').attr('title', strings.selectAll).click(function() {
// Loop through all checkboxes and set their state to the select all checkbox' state.
checkboxes.each(function() {
this.checked = selectAll[0].checked;
// Either add or remove the selected class based on the state of the check all checkbox.
$(this).parents('tr:first')[ this.checked ? 'addClass' : 'removeClass' ]('selected');
});
// Update the title and the state of the check all box.
selectAll.attr('title', selectAll[0].checked ? strings.selectNone : strings.selectAll);
});
// Find all <th> with class select-all, and insert the check all checkbox.
$('th.select-all', table).prepend(selectAll);
// For each of the checkboxes within the table.
checkboxes = $('td input:checkbox', table).click(function(e) {
// Either add or remove the selected class based on the state of the check all checkbox.
$(this).parents('tr:first')[ this.checked ? 'addClass' : 'removeClass' ]('selected');
// If this is a shift click, we need to highlight everything in the range.
// Also make sure that we are actually checking checkboxes over a range and
// that a checkbox has been checked or unchecked before.
if (e.shiftKey && lastChecked && lastChecked != e.target) {
// We use the checkbox's parent TR to do our range searching.
Drupal.tableSelectRange($(e.target).parents('tr')[0], $(lastChecked).parents('tr')[0], e.target.checked);
}
// If all checkboxes are checked, make sure the select-all one is checked too, otherwise keep unchecked.
selectAll[0].checked = (checkboxes.length == $(checkboxes).filter(':checked').length);
// Set the title to the current action.
selectAll.attr('title', selectAll[0].checked ? strings.selectNone : strings.selectAll);
// Keep track of the last checked checkbox.
lastChecked = e.target;
});
$(this).addClass('tableSelect-processed');
};
Drupal.tableSelectRange = function(from, to, state) {
// We determine the looping mode based on the the order of from and to.
var mode = from.rowIndex > to.rowIndex ? 'previousSibling' : 'nextSibling';
// Traverse through the sibling nodes.
for (var i = from[mode]; i; i = i[mode]) {
// Make sure that we're only dealing with elements.
if (i.nodeType != 1) continue;
// Either add or remove the selected class based on the state of the target checkbox.
$(i)[ state ? 'addClass' : 'removeClass' ]('selected');
$('input:checkbox', i).each(function() {
this.checked = state;
});
if (to.nodeType) {
// If we are at the end of the range, stop.
if (i == to) break;
}
// A faster alternative to doing $(i).filter(to).length.
else if (jQuery.filter(to, [i]).r.length) break;
}
};
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