summaryrefslogtreecommitdiff
path: root/program/js/treelist.js
diff options
context:
space:
mode:
Diffstat (limited to 'program/js/treelist.js')
-rw-r--r--program/js/treelist.js588
1 files changed, 555 insertions, 33 deletions
diff --git a/program/js/treelist.js b/program/js/treelist.js
index 353eb6be7..a7cd7cd43 100644
--- a/program/js/treelist.js
+++ b/program/js/treelist.js
@@ -44,7 +44,11 @@ function rcube_treelist_widget(node, p)
scroll_delay: 500,
scroll_step: 5,
scroll_speed: 20,
- check_droptarget: function(node){ return !node.virtual }
+ save_state: false,
+ keyboard: true,
+ tabexit: true,
+ parent_focus: false,
+ check_droptarget: function(node) { return !node.virtual; }
}, p || {});
var container = $(node),
@@ -52,6 +56,9 @@ function rcube_treelist_widget(node, p)
indexbyid = {},
selection = null,
drag_active = false,
+ search_active = false,
+ last_search = '',
+ has_focus = false,
box_coords = {},
item_coords = [],
autoexpand_timer,
@@ -59,6 +66,13 @@ function rcube_treelist_widget(node, p)
body_scroll_top = 0,
list_scroll_top = 0,
scroll_timer,
+ searchfield,
+ tree_state,
+ ui_droppable,
+ ui_draggable,
+ draggable_opts,
+ droppable_opts,
+ list_id = (container.attr('id') || p.id_prefix || '0'),
me = this;
@@ -73,11 +87,16 @@ function rcube_treelist_widget(node, p)
this.drag_start = drag_start;
this.drag_end = drag_end;
this.intersects = intersects;
+ this.droppable = droppable;
+ this.draggable = draggable;
this.update = update_node;
this.insert = insert;
this.remove = remove;
this.get_item = get_item;
+ this.get_node = get_node;
this.get_selection = get_selection;
+ this.is_search = is_search;
+ this.reset_search = reset_search;
/////// startup code (constructor)
@@ -97,7 +116,11 @@ function rcube_treelist_widget(node, p)
e.stopPropagation();
});
- container.on('click', 'li', function(e){
+ container.on('click', 'li', function(e) {
+ // do not select record on checkbox/input click
+ if ($(e.target).is('input'))
+ return true;
+
var node = p.selectable ? indexbyid[dom2id($(this))] : null;
if (node && !node.virtual) {
select(node.id);
@@ -105,6 +128,77 @@ function rcube_treelist_widget(node, p)
}
});
+ // mute clicks on virtual folder links (they need tabindex="0" in order to be selectable by keyboard)
+ container.on('mousedown', 'a', function(e) {
+ var link = $(e.target), node = indexbyid[dom2id(link.closest('li'))];
+ if (node && node.virtual && !link.attr('href')) {
+ e.preventDefault();
+ e.stopPropagation();
+ return false;
+ }
+ });
+
+ // activate search function
+ if (p.searchbox) {
+ searchfield = $(p.searchbox).on('keyup', function(e) {
+ var key = rcube_event.get_keycode(e),
+ mod = rcube_event.get_modifier(e);
+
+ switch (key) {
+ case 9: // tab
+ break;
+
+ case 13: // enter
+ search(this.value, true);
+ return rcube_event.cancel(e);
+
+ case 27: // escape
+ reset_search();
+ break;
+
+ case 38: // arrow up
+ case 37: // left
+ case 39: // right
+ case 40: // arrow down
+ return; // ignore arrow keys
+
+ default:
+ search(this.value, false);
+ break;
+ }
+ }).attr('autocomplete', 'off');
+
+ // find the reset button for this search field
+ searchfield.parent().find('a.reset').click(function(e) {
+ reset_search();
+ return false;
+ })
+ }
+
+ container.on('focusin', function(e){
+ // TODO: only accept focus on virtual nodes from keyboard events
+ has_focus = true;
+ })
+ .on('focusout', function(e){
+ has_focus = false;
+ });
+
+ container.attr('role', 'tree');
+
+ $(document.body)
+ .bind('keydown', keypress);
+
+ // catch focus when clicking the list container area
+ if (p.parent_focus) {
+ container.parent(':not(body)').click(function(e) {
+ if (!has_focus && selection) {
+ $(get_item(selection)).find(':focusable').first().focus();
+ }
+ else if (!has_focus) {
+ container.children('li:has(:focusable)').first().find(':focusable').first().focus();
+ }
+ });
+ }
/////// private methods
@@ -126,6 +220,7 @@ function rcube_treelist_widget(node, p)
}
me.triggerEvent(node.collapsed ? 'collapse' : 'expand', node);
+ save_state(id, node.collapsed);
}
}
@@ -154,15 +249,24 @@ function rcube_treelist_widget(node, p)
function select(id)
{
if (selection) {
- id2dom(selection).removeClass('selected');
+ id2dom(selection, true).removeClass('selected').removeAttr('aria-selected');
+ if (search_active)
+ id2dom(selection).removeClass('selected').removeAttr('aria-selected');
selection = null;
}
- var li = id2dom(id);
+ if (!id)
+ return;
+
+ var li = id2dom(id, true);
if (li.length) {
- li.addClass('selected');
+ li.addClass('selected').attr('aria-selected', 'true');
selection = id;
// TODO: expand all parent nodes if collapsed
+
+ if (search_active)
+ id2dom(id).addClass('selected').attr('aria-selected', 'true');
+
scroll_to_node(li);
}
@@ -180,9 +284,17 @@ function rcube_treelist_widget(node, p)
/**
* Return the DOM element of the list item with the given ID
*/
- function get_item(id)
+ function get_node(id)
+ {
+ return indexbyid[id];
+ }
+
+ /**
+ * Return the DOM element of the list item with the given ID
+ */
+ function get_item(id, real)
{
- return id2dom(id).get(0);
+ return id2dom(id, real).get(0);
}
/**
@@ -191,13 +303,27 @@ function rcube_treelist_widget(node, p)
function insert(node, parent_id, sort)
{
var li, parent_li,
- parent_node = parent_id ? indexbyid[parent_id] : null;
+ parent_node = parent_id ? indexbyid[parent_id] : null
+ search_ = search_active;
+
+ // ignore, already exists
+ if (indexbyid[node.id]) {
+ return;
+ }
+
+ // apply saved state
+ state = get_state(node.id, node.collapsed);
+ if (state !== undefined) {
+ node.collapsed = state;
+ }
// insert as child of an existing node
if (parent_node) {
+ node.level = parent_node.level + 1;
if (!parent_node.children)
parent_node.children = [];
+ search_active = false;
parent_node.children.push(node);
parent_li = id2dom(parent_id);
@@ -210,9 +336,25 @@ function rcube_treelist_widget(node, p)
// append new node to parent's child list
li = render_node(node, parent_li.children('ul').first());
}
+
+ // list is in search mode
+ if (search_) {
+ search_active = search_;
+
+ // add clone to current search results (top level)
+ if (!li.is(':visible')) {
+ $('<li>')
+ .attr('id', li.attr('id') + '--xsR')
+ .attr('class', li.attr('class'))
+ .addClass('searchresult__')
+ .append(li.children().first().clone(true, true))
+ .appendTo(container);
+ }
+ }
}
// insert at top level
else {
+ node.level = 0;
data.push(node);
li = render_node(node, container);
}
@@ -229,14 +371,32 @@ function rcube_treelist_widget(node, p)
*/
function update_node(id, updates, sort)
{
- var li, node = indexbyid[id];
+ var li, parent_ul, parent_node, old_parent,
+ node = indexbyid[id];
if (node) {
li = id2dom(id);
+ parent_ul = li.parent();
+
+ if (updates.id || updates.html || updates.children || updates.classes || updates.parent) {
+ if (updates.parent && (parent_node = indexbyid[updates.parent])) {
+ // remove reference from old parent's child list
+ if (parent_ul.closest('li').length && (old_parent = indexbyid[dom2id(parent_ul.closest('li'))])) {
+ old_parent.children = $.grep(old_parent.children, function(elem, i){ return elem.id != node.id; });
+ }
+
+ // append to new parent node
+ parent_ul = id2dom(updates.parent).children('ul').first();
+ if (!parent_node.children)
+ parent_node.children = [];
+ parent_node.children.push(node);
+ }
+ else if (updates.parent !== undefined) {
+ parent_ul = container;
+ }
- if (updates.id || updates.html || updates.children || updates.classes) {
$.extend(node, updates);
- render_node(node, li.parent(), li);
+ li = render_node(node, parent_ul, li);
}
if (node.id != id) {
@@ -276,7 +436,7 @@ function rcube_treelist_widget(node, p)
if (sibling) {
li.insertAfter(sibling);
}
- else if (first.id != myid) {
+ else if (first && first.id != myid) {
li.insertBefore(first);
}
@@ -292,7 +452,7 @@ function rcube_treelist_widget(node, p)
var node, li;
if (node = indexbyid[id]) {
- li = id2dom(id);
+ li = id2dom(id, true);
li.remove();
node.deleted = true;
@@ -309,7 +469,7 @@ function rcube_treelist_widget(node, p)
*/
function update_data()
{
- data = walk_list(container);
+ data = walk_list(container, 0);
}
/**
@@ -318,6 +478,7 @@ function rcube_treelist_widget(node, p)
function update_dom(node)
{
var li = id2dom(node.id);
+ li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
li.children('ul').first()[(node.collapsed ? 'hide' : 'show')]();
li.children('div.treetoggle').removeClass('collapsed expanded').addClass(node.collapsed ? 'collapsed' : 'expanded');
me.triggerEvent('toggle', node);
@@ -326,7 +487,7 @@ function rcube_treelist_widget(node, p)
/**
*
*/
- function reset()
+ function reset(keep_content)
{
select('');
@@ -334,7 +495,112 @@ function rcube_treelist_widget(node, p)
indexbyid = {};
drag_active = false;
- container.html('');
+ if (keep_content) {
+ if (draggable_opts) {
+ if (ui_draggable)
+ draggable('destroy');
+ draggable(draggable_opts);
+ }
+
+ if (droppable_opts) {
+ if (ui_droppable)
+ droppable('destroy');
+ droppable(droppable_opts);
+ }
+
+ update_data();
+ }
+ else {
+ container.html('');
+ }
+
+ reset_search();
+ }
+
+ /**
+ *
+ */
+ function search(q, enter)
+ {
+ q = String(q).toLowerCase();
+
+ if (!q.length)
+ return reset_search();
+ else if (q == last_search && !enter)
+ return 0;
+
+ var hits = [];
+ var search_tree = function(items) {
+ $.each(items, function(i, node) {
+ var li, sli;
+ if (!node.virtual && !node.deleted && String(node.text).toLowerCase().indexOf(q) >= 0 && hits.indexOf(node.id) < 0) {
+ li = id2dom(node.id);
+
+ // skip already filtered nodes
+ if (li.data('filtered'))
+ return;
+
+ sli = $('<li>')
+ .attr('id', li.attr('id') + '--xsR')
+ .attr('class', li.attr('class'))
+ .addClass('searchresult__')
+ // append all elements like links and inputs, but not sub-trees
+ .append(li.children(':not(div.treetoggle,ul)').clone(true, true))
+ .appendTo(container);
+ hits.push(node.id);
+ }
+
+ if (node.children && node.children.length) {
+ search_tree(node.children);
+ }
+ });
+ };
+
+ // reset old search results
+ if (search_active) {
+ $(container).children('li.searchresult__').remove();
+ search_active = false;
+ }
+
+ // hide all list items
+ $(container).children('li').hide().removeClass('selected');
+
+ // search recursively in tree (to keep sorting order)
+ search_tree(data);
+ search_active = true;
+ last_search = q;
+
+ me.triggerEvent('search', { query: q, last: last_search, count: hits.length, ids: hits, execute: enter||false });
+
+ return hits.count;
+ }
+
+ /**
+ *
+ */
+ function reset_search()
+ {
+ if (searchfield)
+ searchfield.val('');
+
+ $(container).children('li.searchresult__').remove();
+ $(container).children('li').filter(function() { return !$(this).data('filtered'); }).show();
+
+ search_active = false;
+
+ me.triggerEvent('search', { query: false, last: last_search });
+ last_search = '';
+
+ if (selection)
+ select(selection);
+ }
+
+ /**
+ *
+ */
+ function is_search()
+ {
+ return search_active;
}
/**
@@ -350,6 +616,7 @@ function rcube_treelist_widget(node, p)
// render child nodes
for (var i=0; i < data.length; i++) {
+ data[i].level = 0;
render_node(data[i], container);
}
@@ -366,10 +633,15 @@ function rcube_treelist_widget(node, p)
var li = $('<li>')
.attr('id', p.id_prefix + (p.id_encode ? p.id_encode(node.id) : node.id))
- .addClass((node.classes || []).join(' '));
+ .attr('role', 'treeitem')
+ .addClass((node.classes || []).join(' '))
+ .data('id', node.id);
- if (replace)
+ if (replace) {
replace.replaceWith(li);
+ if (parent)
+ li.appendTo(parent);
+ }
else
li.appendTo(parent);
@@ -378,6 +650,9 @@ function rcube_treelist_widget(node, p)
else if (typeof node.html == 'object')
li.append(node.html);
+ if (!node.text)
+ node.text = li.children().first().text();
+
if (node.virtual)
li.addClass('virtual');
if (node.id == selection)
@@ -385,12 +660,14 @@ function rcube_treelist_widget(node, p)
// add child list and toggle icon
if (node.children && node.children.length) {
+ li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
$('<div class="treetoggle '+(node.collapsed ? 'collapsed' : 'expanded') + '">&nbsp;</div>').appendTo(li);
- var ul = $('<ul>').appendTo(li).attr('class', node.childlistclass);
+ var ul = $('<ul>').appendTo(li).attr('class', node.childlistclass).attr('role', 'group');
if (node.collapsed)
ul.hide();
for (var i=0; i < node.children.length; i++) {
+ node.children[i].level = node.level + 1;
render_node(node.children[i], ul);
}
}
@@ -402,17 +679,19 @@ function rcube_treelist_widget(node, p)
* Recursively walk the DOM tree and build an internal data structure
* representing the skeleton of this tree list.
*/
- function walk_list(ul)
+ function walk_list(ul, level)
{
var result = [];
ul.children('li').each(function(i,e){
- var li = $(e), sublist = li.children('ul');
+ var state, li = $(e), sublist = li.children('ul');
var node = {
id: dom2id(li),
- classes: li.attr('class').split(' '),
+ classes: String(li.attr('class')).split(' '),
virtual: li.hasClass('virtual'),
+ level: level,
html: li.children().first().get(0).outerHTML,
- children: walk_list(sublist)
+ text: li.children().first().text(),
+ children: walk_list(sublist, level+1)
}
if (sublist.length) {
@@ -420,14 +699,39 @@ function rcube_treelist_widget(node, p)
}
if (node.children.length) {
node.collapsed = sublist.css('display') == 'none';
+
+ // apply saved state
+ state = get_state(node.id, node.collapsed);
+ if (state !== undefined) {
+ node.collapsed = state;
+ sublist[(state?'hide':'show')]();
+ }
+
+ if (!li.children('div.treetoggle').length)
+ $('<div class="treetoggle '+(node.collapsed ? 'collapsed' : 'expanded') + '">&nbsp;</div>').appendTo(li);
+
+ li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
}
if (li.hasClass('selected')) {
+ li.attr('aria-selected', 'true');
selection = node.id;
}
+ li.data('id', node.id);
+
+ // declare list item as treeitem
+ li.attr('role', 'treeitem').attr('aria-level', node.level+1);
+
+ // allow virtual nodes to receive focus
+ if (node.virtual) {
+ li.children('a:first').attr('tabindex', '0');
+ }
+
result.push(node);
indexbyid[node.id] = node;
- })
+ });
+
+ ul.attr('role', level == 0 ? 'tree' : 'group');
return result;
}
@@ -450,17 +754,19 @@ function rcube_treelist_widget(node, p)
*/
function dom2id(li)
{
- var domid = li.attr('id').replace(new RegExp('^' + (p.id_prefix) || '%'), '');
+ var domid = String(li.attr('id')).replace(new RegExp('^' + (p.id_prefix) || '%'), '').replace(/--xsR$/, '');
return p.id_decode ? p.id_decode(domid) : domid;
}
/**
* Get the <li> element for the given node ID
*/
- function id2dom(id)
+ function id2dom(id, real)
{
- var domid = p.id_encode ? p.id_encode(id) : id;
- return $('#' + p.id_prefix + domid);
+ var domid = p.id_encode ? p.id_encode(id) : id,
+ suffix = search_active && !real ? '--xsR' : '';
+
+ return $('#' + p.id_prefix + domid + suffix, container);
}
/**
@@ -476,6 +782,124 @@ function rcube_treelist_widget(node, p)
scroller.scrollTop(rel_offset + current_offset);
}
+ /**
+ * Save node collapse state to localStorage
+ */
+ function save_state(id, collapsed)
+ {
+ if (p.save_state && window.rcmail) {
+ var key = 'treelist-' + list_id;
+ if (!tree_state) {
+ tree_state = rcmail.local_storage_get_item(key, {});
+ }
+
+ if (tree_state[id] != collapsed) {
+ tree_state[id] = collapsed;
+ rcmail.local_storage_set_item(key, tree_state);
+ }
+ }
+ }
+
+ /**
+ * Read node collapse state from localStorage
+ */
+ function get_state(id)
+ {
+ if (p.save_state && window.rcmail) {
+ if (!tree_state) {
+ tree_state = rcmail.local_storage_get_item('treelist-' + list_id, {});
+ }
+ return tree_state[id];
+ }
+
+ return undefined;
+ }
+
+ /**
+ * Handler for keyboard events on treelist
+ */
+ function keypress(e)
+ {
+ var target = e.target || {},
+ keyCode = rcube_event.get_keycode(e);
+
+ if (!has_focus || target.nodeName == 'INPUT' && keyCode != 38 && keyCode != 40 || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
+ return true;
+
+ switch (keyCode) {
+ case 38:
+ case 40:
+ case 63232: // 'up', in safari keypress
+ case 63233: // 'down', in safari keypress
+ var li = p.keyboard ? container.find(':focus').closest('li') : [];
+ if (li.length) {
+ focus_next(li, (mod = keyCode == 38 || keyCode == 63232 ? -1 : 1));
+ }
+ return rcube_event.cancel(e);
+
+ case 37: // Left arrow key
+ case 39: // Right arrow key
+ var id, node, li = container.find(':focus').closest('li');
+ if (li.length) {
+ id = dom2id(li);
+ node = indexbyid[id];
+ if (node && node.children.length && node.collapsed != (keyCode == 37))
+ toggle(id, rcube_event.get_modifier(e) == SHIFT_KEY); // toggle subtree
+ }
+ return false;
+
+ case 9: // Tab
+ if (p.keyboard && p.tabexit) {
+ // jump to last/first item to move focus away from the treelist widget by tab
+ var limit = rcube_event.get_modifier(e) == SHIFT_KEY ? 'first' : 'last';
+ focus_noscroll(container.find('li[role=treeitem]:has(a)')[limit]().find('a:'+limit));
+ }
+ break;
+ }
+
+ return true;
+ }
+
+ function focus_next(li, dir, from_child)
+ {
+ var mod = dir < 0 ? 'prev' : 'next',
+ next = li[mod](), limit, parent;
+
+ if (dir > 0 && !from_child && li.children('ul[role=group]:visible').length) {
+ li.children('ul').children('li:first').find('a:first').focus();
+ }
+ else if (dir < 0 && !from_child && next.children('ul[role=group]:visible').length) {
+ next.children('ul').children('li:last').find('a:first').focus();
+ }
+ else if (next.length && next.find('a:first').focus().length) {
+ // focused
+ }
+ else {
+ parent = li.parent().closest('li[role=treeitem]');
+ if (parent.length)
+ if (dir < 0) {
+ parent.find('a:first').focus();
+ }
+ else {
+ focus_next(parent, dir, true);
+ }
+ }
+ }
+
+ /**
+ * Focus the given element without scrolling the list container
+ */
+ function focus_noscroll(elem)
+ {
+ if (elem.length) {
+ var frame = container.parent().get(0) || { scrollTop:0 },
+ y = frame.scrollTop || frame.scrollY;
+ elem.focus();
+ frame.scrollTop = y;
+ }
+ }
+
+
///// drag & drop support
/**
@@ -484,6 +908,11 @@ function rcube_treelist_widget(node, p)
*/
function drag_start()
{
+ if (drag_active)
+ return;
+
+ drag_active = true;
+
var li, item, height,
pos = container.offset();
@@ -491,7 +920,6 @@ function rcube_treelist_widget(node, p)
list_scroll_top = container.parent().scrollTop();
pos.top += list_scroll_top;
- drag_active = true;
box_coords = {
x1: pos.left,
y1: pos.top,
@@ -554,6 +982,9 @@ function rcube_treelist_widget(node, p)
*/
function drag_end()
{
+ if (!drag_active)
+ return;
+
drag_active = false;
scroll_timer = null;
@@ -584,7 +1015,7 @@ function rcube_treelist_widget(node, p)
}
/**
- * Determine if the given mouse coords intersect the list and one if its items
+ * Determine if the given mouse coords intersect the list and one of its items
*/
function intersects(mouse, highlight)
{
@@ -598,13 +1029,14 @@ function rcube_treelist_widget(node, p)
// no intersection with list bounding box
if (mouse.x < box_coords.x1 || mouse.x >= box_coords.x2 || mouse.top < box_coords.y1 || mouse.top >= box_coords.y2) {
// TODO: optimize performance for this operation
- $('li.droptarget', container).removeClass('droptarget');
+ if (highlight)
+ $('li.droptarget', container).removeClass('droptarget');
return result;
}
// check intersection with visible list items
- var pos, node;
- for (var id in item_coords) {
+ var id, pos, node;
+ for (id in item_coords) {
pos = item_coords[id];
if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.top >= pos.y1 && mouse.top < pos.y2) {
node = indexbyid[id];
@@ -619,6 +1051,8 @@ function rcube_treelist_widget(node, p)
expand(autoexpand_item);
drag_start(); // re-calculate item coords
autoexpand_item = null;
+ if (ui_droppable)
+ $.ui.ddmanager.prepareOffsets($.ui.ddmanager.current, null);
}, p.autoexpand);
}
else if (autoexpand_timer && autoexpand_item != id) {
@@ -647,6 +1081,94 @@ function rcube_treelist_widget(node, p)
return result;
}
+
+ /**
+ * Wrapper for jQuery.UI.droppable() activation on this widget
+ *
+ * @param object Options as passed to regular .droppable() function
+ */
+ function droppable(opts)
+ {
+ if (!opts) opts = {};
+
+ if ($.type(opts) == 'string') {
+ if (opts == 'destroy') {
+ ui_droppable = null;
+ }
+ $('li:not(.virtual)', container).droppable(opts);
+ return this;
+ }
+
+ droppable_opts = opts;
+
+ var my_opts = $.extend({
+ greedy: true,
+ tolerance: 'pointer',
+ hoverClass: 'droptarget',
+ addClasses: false
+ }, opts);
+
+ my_opts.activate = function(e, ui) {
+ drag_start();
+ ui_droppable = ui;
+ if (opts.activate)
+ opts.activate(e, ui);
+ };
+
+ my_opts.deactivate = function(e, ui) {
+ drag_end();
+ ui_droppable = null;
+ if (opts.deactivate)
+ opts.deactivate(e, ui);
+ };
+
+ my_opts.over = function(e, ui) {
+ intersects(rcube_event.get_mouse_pos(e), false);
+ if (opts.over)
+ opts.over(e, ui);
+ };
+
+ $('li:not(.virtual)', container).droppable(my_opts);
+
+ return this;
+ }
+
+ /**
+ * Wrapper for jQuery.UI.draggable() activation on this widget
+ *
+ * @param object Options as passed to regular .draggable() function
+ */
+ function draggable(opts)
+ {
+ if (!opts) opts = {};
+
+ if ($.type(opts) == 'string') {
+ if (opts == 'destroy') {
+ ui_draggable = null;
+ }
+ $('li:not(.virtual)', container).draggable(opts);
+ return this;
+ }
+
+ draggable_opts = opts;
+
+ var my_opts = $.extend({
+ appendTo: 'body',
+ revert: 'invalid',
+ iframeFix: true,
+ addClasses: false,
+ cursorAt: {left: -20, top: 5},
+ create: function(e, ui) { ui_draggable = ui; },
+ helper: function(e) {
+ return $('<div>').attr('id', 'rcmdraglayer')
+ .text($.trim($(e.target).first().text()));
+ }
+ }, opts);
+
+ $('li:not(.virtual)', container).draggable(my_opts);
+
+ return this;
+ }
}
// use event processing functions from Roundcube's rcube_event_engine