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-rw-r--r--program/js/app.js206
-rw-r--r--program/js/treelist.js425
2 files changed, 492 insertions, 139 deletions
diff --git a/program/js/app.js b/program/js/app.js
index 6d5bdfe74..dbb65eea4 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -4,7 +4,7 @@
| |
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2005-2013, The Roundcube Dev Team |
- | Copyright (C) 2011-2012, Kolab Systems AG |
+ | Copyright (C) 2011-2013, Kolab Systems AG |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
@@ -459,9 +459,22 @@ function rcube_webmail()
this.display_message(this.pending_message[0], this.pending_message[1], this.pending_message[2]);
// map implicit containers
- if (this.gui_objects.folderlist)
+ if (this.gui_objects.folderlist) {
this.gui_containers.foldertray = $(this.gui_objects.folderlist);
+ // init treelist widget
+ if (window.rcube_treelist_widget) {
+ this.treelist = new rcube_treelist_widget(this.gui_objects.folderlist, {
+ id_prefix: 'rcmli',
+ id_encode: this.html_identifier_encode,
+ id_decode: this.html_identifier_decode,
+ check_droptarget: function(node){ return !node.virtual && ref.check_droptarget(node.id) }
+ });
+ this.treelist.addEventListener('collapse', function(node){ ref.folder_collapsed(node) });
+ this.treelist.addEventListener('expand', function(node){ ref.folder_collapsed(node) });
+ }
+ }
+
// activate html5 file drop feature (if browser supports it and if configured)
if (this.gui_objects.filedrop && this.env.filedrop && ((window.XMLHttpRequest && XMLHttpRequest.prototype && XMLHttpRequest.prototype.sendAsBinary) || window.FormData)) {
$(document.body).bind('dragover dragleave drop', function(e){ return ref.document_drag_hover(e, e.type == 'dragover'); });
@@ -1263,11 +1276,12 @@ function rcube_webmail()
this.html_identifier = function(str, encode)
{
- str = String(str);
- if (encode)
- return Base64.encode(str).replace(/=+$/, '').replace(/\+/g, '-').replace(/\//g, '_');
- else
- return str.replace(this.identifier_expr, '_');
+ return encode ? this.html_identifier_encode(str) : String(str).replace(this.identifier_expr, '_');
+ };
+
+ this.html_identifier_encode = function(str)
+ {
+ return Base64.encode(String(str)).replace(/=+$/, '').replace(/\+/g, '-').replace(/\//g, '_');
};
this.html_identifier_decode = function(str)
@@ -1320,29 +1334,9 @@ function rcube_webmail()
if (this.preview_read_timer)
clearTimeout(this.preview_read_timer);
- // save folderlist and folders location/sizes for droptarget calculation in drag_move()
- if (this.gui_objects.folderlist && model) {
- this.initialBodyScrollTop = bw.ie ? 0 : window.pageYOffset;
- this.initialListScrollTop = this.gui_objects.folderlist.parentNode.scrollTop;
-
- var k, li, height,
- list = $(this.gui_objects.folderlist);
- pos = list.offset();
-
- this.env.folderlist_coords = { x1:pos.left, y1:pos.top, x2:pos.left + list.width(), y2:pos.top + list.height() };
-
- this.env.folder_coords = [];
- for (k in model) {
- if (li = this.get_folder_li(k)) {
- // only visible folders
- if (height = li.firstChild.offsetHeight) {
- pos = $(li.firstChild).offset();
- this.env.folder_coords[k] = { x1:pos.left, y1:pos.top,
- x2:pos.left + li.firstChild.offsetWidth, y2:pos.top + height, on:0 };
- }
- }
- }
- }
+ // prepare treelist widget for dragging interactions
+ if (this.treelist)
+ this.treelist.drag_start();
};
this.drag_end = function(e)
@@ -1350,87 +1344,28 @@ function rcube_webmail()
this.drag_active = false;
this.env.last_folder_target = null;
- if (this.folder_auto_timer) {
- clearTimeout(this.folder_auto_timer);
- this.folder_auto_timer = null;
- this.folder_auto_expand = null;
- }
-
- // over the folders
- if (this.gui_objects.folderlist && this.env.folder_coords) {
- for (var k in this.env.folder_coords) {
- if (this.env.folder_coords[k].on)
- $(this.get_folder_li(k)).removeClass('droptarget');
- }
- }
+ if (this.treelist)
+ this.treelist.drag_end();
};
this.drag_move = function(e)
{
- if (this.gui_objects.folderlist && this.env.folder_coords) {
- var k, li, div, check, oldclass,
+ if (this.gui_objects.folderlist) {
+ var drag_target, oldclass,
layerclass = 'draglayernormal',
- mouse = rcube_event.get_mouse_pos(e),
- pos = this.env.folderlist_coords,
- // offsets to compensate for scrolling while dragging a message
- boffset = bw.ie ? -document.documentElement.scrollTop : this.initialBodyScrollTop,
- moffset = this.initialListScrollTop-this.gui_objects.folderlist.parentNode.scrollTop;
+ mouse = rcube_event.get_mouse_pos(e);
if (this.contact_list && this.contact_list.draglayer)
oldclass = this.contact_list.draglayer.attr('class');
- mouse.y += -moffset-boffset;
-
- // if mouse pointer is outside of folderlist
- if (mouse.x < pos.x1 || mouse.x >= pos.x2 || mouse.y < pos.y1 || mouse.y >= pos.y2) {
- if (this.env.last_folder_target) {
- $(this.get_folder_li(this.env.last_folder_target)).removeClass('droptarget');
- this.env.folder_coords[this.env.last_folder_target].on = 0;
- this.env.last_folder_target = null;
- }
- if (layerclass != oldclass && this.contact_list && this.contact_list.draglayer)
- this.contact_list.draglayer.attr('class', layerclass);
- return;
+ // mouse intersects a valid drop target on the treelist
+ if (this.treelist && (drag_target = this.treelist.intersects(mouse, true))) {
+ this.env.last_folder_target = drag_target;
+ layerclass = 'draglayer' + (this.check_droptarget(drag_target) > 1 ? 'copy' : 'normal');
}
-
- // over the folders
- for (k in this.env.folder_coords) {
- pos = this.env.folder_coords[k];
- if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.y >= pos.y1 && mouse.y < pos.y2) {
- if (check = this.check_droptarget(k)) {
- li = this.get_folder_li(k);
- div = $(li.getElementsByTagName('div')[0]);
-
- // if the folder is collapsed, expand it after 1sec and restart the drag & drop process.
- if (div.hasClass('collapsed')) {
- if (this.folder_auto_timer)
- clearTimeout(this.folder_auto_timer);
-
- this.folder_auto_expand = this.env.mailboxes[k].id;
- this.folder_auto_timer = setTimeout(function() {
- rcmail.command('collapse-folder', rcmail.folder_auto_expand);
- rcmail.drag_start(null);
- }, 1000);
- }
- else if (this.folder_auto_timer) {
- clearTimeout(this.folder_auto_timer);
- this.folder_auto_timer = null;
- this.folder_auto_expand = null;
- }
-
- $(li).addClass('droptarget');
- this.env.folder_coords[k].on = 1;
- this.env.last_folder_target = k;
- layerclass = 'draglayer' + (check > 1 ? 'copy' : 'normal');
- }
- // Clear target, otherwise drag end will trigger move into last valid droptarget
- else
- this.env.last_folder_target = null;
- }
- else if (pos.on) {
- $(this.get_folder_li(k)).removeClass('droptarget');
- this.env.folder_coords[k].on = 0;
- }
+ else {
+ // Clear target, otherwise drag end will trigger move into last valid droptarget
+ this.env.last_folder_target = null;
}
if (layerclass != oldclass && this.contact_list && this.contact_list.draglayer)
@@ -1440,40 +1375,33 @@ function rcube_webmail()
this.collapse_folder = function(name)
{
- var li = this.get_folder_li(name, '', true),
- div = $('div:first', li),
- ul = $('ul:first', li);
+ if (this.treelist)
+ this.treelist.toggle(name);
+ };
+
+ this.folder_collapsed = function(node)
+ {
+ var prefname = this.env.task == 'addressbook' ? 'collapsed_abooks' : 'collapsed_folders';
- if (div.hasClass('collapsed')) {
- ul.show();
- div.removeClass('collapsed').addClass('expanded');
- var reg = new RegExp('&'+urlencode(name)+'&');
- this.env.collapsed_folders = this.env.collapsed_folders.replace(reg, '');
- }
- else if (div.hasClass('expanded')) {
- ul.hide();
- div.removeClass('expanded').addClass('collapsed');
- this.env.collapsed_folders = this.env.collapsed_folders+'&'+urlencode(name)+'&';
+ if (node.collapsed) {
+ this.env[prefname] = this.env[prefname] + '&'+urlencode(node.id)+'&';
// select the folder if one of its childs is currently selected
// don't select if it's virtual (#1488346)
- if (this.env.mailbox.indexOf(name + this.env.delimiter) == 0 && !$(li).hasClass('virtual'))
+ if (this.env.mailbox && this.env.mailbox.indexOf(name + this.env.delimiter) == 0 && !node.virtual)
this.command('list', name);
}
- else
- return;
-
- // Work around a bug in IE6 and IE7, see #1485309
- if (bw.ie6 || bw.ie7) {
- var siblings = li.nextSibling ? li.nextSibling.getElementsByTagName('ul') : null;
- if (siblings && siblings.length && (li = siblings[0]) && li.style && li.style.display != 'none') {
- li.style.display = 'none';
- li.style.display = '';
- }
+ else {
+ var reg = new RegExp('&'+urlencode(node.id)+'&');
+ this.env[prefname] = this.env[prefname].replace(reg, '');
}
- this.command('save-pref', { name: 'collapsed_folders', value: this.env.collapsed_folders });
- this.set_unread_count_display(name, false);
+ if (!this.drag_active) {
+ this.command('save-pref', { name: prefname, value: this.env[prefname] });
+
+ if (this.env.unread_counts)
+ this.set_unread_count_display(node.id, false);
+ }
};
this.doc_mouse_up = function(e)
@@ -1498,9 +1426,9 @@ function rcube_webmail()
if (this.drag_active && model && this.env.last_folder_target) {
var target = model[this.env.last_folder_target];
- $(this.get_folder_li(this.env.last_folder_target)).removeClass('droptarget');
this.env.last_folder_target = null;
list.draglayer.hide();
+ this.drag_end(e);
if (!this.drag_menu(e, target))
this.command('moveto', target);
@@ -4164,7 +4092,7 @@ function rcube_webmail()
else if (!this.env.search_request)
folder = group ? 'G'+src+group : src;
- this.select_folder(folder);
+ this.select_folder(folder, '', true);
this.env.source = src;
this.env.group = group;
@@ -4468,7 +4396,7 @@ function rcube_webmail()
this.name_input.bind('keydown', function(e){ return rcmail.add_input_keydown(e); });
this.env.group_renaming = true;
- var link, li = this.get_folder_li(this.env.source+this.env.group, 'rcmliG');
+ var link, li = this.get_folder_li('G'+this.env.source+this.env.group,'',true);
if (li && (link = li.firstChild)) {
$(link).hide().before(this.name_input);
}
@@ -4489,7 +4417,7 @@ function rcube_webmail()
this.remove_group_item = function(prop)
{
var li, key = 'G'+prop.source+prop.id;
- if ((li = this.get_folder_li(key))) {
+ if ((li = this.get_folder_li(key,'',true))) {
this.triggerEvent('group_delete', { source:prop.source, id:prop.id, li:li });
li.parentNode.removeChild(li);
@@ -4511,7 +4439,7 @@ function rcube_webmail()
this.name_input.bind('keydown', function(e){ return rcmail.add_input_keydown(e); });
this.name_input_li = $('<li>').addClass(type).append(this.name_input);
- var li = type == 'contactsearch' ? $('li:last', this.gui_objects.folderlist) : this.get_folder_li(this.env.source);
+ var li = type == 'contactsearch' ? $('li:last', this.gui_objects.folderlist) : $('ul.groups li:last', this.get_folder_li(this.env.source,'',true));
this.name_input_li.insertAfter(li);
}
@@ -4612,7 +4540,7 @@ function rcube_webmail()
this.reset_add_input();
var key = 'G'+prop.source+prop.id,
- li = this.get_folder_li(key),
+ li = this.get_folder_li(key,'',true),
link;
// group ID has changed, replace link node and identifiers
@@ -4651,8 +4579,8 @@ function rcube_webmail()
this.add_contact_group_row = function(prop, li, reloc)
{
var row, name = prop.name.toUpperCase(),
- sibling = this.get_folder_li(prop.source),
- prefix = 'rcmliG' + this.html_identifier(prop.source);
+ sibling = this.get_folder_li(prop.source,'',true),
+ prefix = 'rcmli' + this.html_identifier('G'+prop.source, true);
// When renaming groups, we need to remove it from DOM and insert it in the proper place
if (reloc) {
@@ -4901,12 +4829,12 @@ function rcube_webmail()
.attr('rel', id)
.click(function() { return rcmail.command('listsearch', id, this); })
.html(name),
- li = $('<li>').attr({id: 'rcmli' + this.html_identifier(key), 'class': 'contactsearch'})
+ li = $('<li>').attr({ id:'rcmli' + this.html_identifier(key,true), 'class':'contactsearch' })
.append(link),
prop = {name:name, id:id, li:li[0]};
this.add_saved_search_row(prop, li);
- this.select_folder('S'+id);
+ this.select_folder(key,'',true);
this.enable_command('search-delete', true);
this.env.search_id = id;
@@ -4960,7 +4888,7 @@ function rcube_webmail()
this.remove_search_item = function(id)
{
var li, key = 'S'+id;
- if ((li = this.get_folder_li(key))) {
+ if ((li = this.get_folder_li(key,'',true))) {
this.triggerEvent('search_delete', { id:id, li:li });
li.parentNode.removeChild(li);
@@ -4982,7 +4910,7 @@ function rcube_webmail()
}
this.reset_qsearch();
- this.select_folder('S'+id);
+ this.select_folder('S'+id, '', true);
// reset vars
this.env.current_page = 1;
diff --git a/program/js/treelist.js b/program/js/treelist.js
new file mode 100644
index 000000000..47ac0c1a0
--- /dev/null
+++ b/program/js/treelist.js
@@ -0,0 +1,425 @@
+/*
+ +-----------------------------------------------------------------------+
+ | Roundcube Treelist widget |
+ | |
+ | This file is part of the Roundcube Webmail client |
+ | Copyright (C) 2013, The Roundcube Dev Team |
+ | |
+ | Licensed under the GNU General Public License version 3 or |
+ | any later version with exceptions for skins & plugins. |
+ | See the README file for a full license statement. |
+ | |
+ +-----------------------------------------------------------------------+
+ | Authors: Thomas Bruederli <roundcube@gmail.com> |
+ +-----------------------------------------------------------------------+
+ | Requires: common.js |
+ +-----------------------------------------------------------------------+
+*/
+
+
+/**
+ * Roundcube Treelist widget class
+ * @contructor
+ */
+function rcube_treelist_widget(node, p)
+{
+ // apply some defaults to p
+ p = $.extend({
+ id_prefix: '',
+ autoexpand: 1000,
+ selectable: false,
+ check_droptarget: function(node){ return !node.virtual }
+ }, p || {});
+
+ var container = $(node);
+ var data = p.data || [];
+ var indexbyid = {};
+ var selection = null;
+ var drag_active = false;
+ var box_coords = {};
+ var item_coords = [];
+ var autoexpand_timer;
+ var autoexpand_item;
+ var body_scroll_top = 0;
+ var list_scroll_top = 0;
+ var me = this;
+
+
+ /////// export public members and methods
+
+ this.container = container;
+ this.expand = expand;
+ this.collapse = collapse;
+ this.select = select;
+ this.render = render;
+ this.drag_start = drag_start;
+ this.drag_end = drag_end;
+ this.intersects = intersects;
+
+
+ /////// startup code (constructor)
+
+ // abort if node not found
+ if (!container.length)
+ return;
+
+ if (p.data) {
+ index_data({ children:data });
+ }
+ // load data from DOM
+ else {
+ data = walk_list(container);
+ // console.log(data);
+ }
+
+ // register click handlers on list
+ container.on('click', 'div.treetoggle', function(e){
+ toggle(dom2id($(this).parent()));
+ });
+
+ container.on('click', 'li', function(e){
+ var node = p.selectable ? indexbyid[dom2id($(this))] : null;
+ if (node && !node.virtual) {
+ select(node.id);
+ e.stopPropagation();
+ }
+ });
+
+
+ /////// private methods
+
+ /**
+ * Collaps a the node with the given ID
+ */
+ function collapse(id, recursive, set)
+ {
+ var node;
+ if (node = indexbyid[id]) {
+ node.collapsed = typeof set == 'undefined' || set;
+ update_dom(node);
+
+ // Work around a bug in IE6 and IE7, see #1485309
+ if (window.bw && (bw.ie6 || bw.ie7) && node.collapsed) {
+ id2dom(node.id).next().children('ul:visible').hide().show();
+ }
+
+ if (recursive && node.children) {
+ for (var i=0; i < node.children.length; i++) {
+ collapse(node.children[i].id, recursive, set);
+ }
+ }
+
+ me.triggerEvent(node.collapsed ? 'collapse' : 'expand', node);
+ }
+ }
+
+ /**
+ * Expand a the node with the given ID
+ */
+ function expand(id, recursive)
+ {
+ collapse(id, recursive, false);
+ }
+
+ /**
+ * Toggle collapsed state of a list node
+ */
+ function toggle(id, recursive)
+ {
+ var node;
+ if (node = indexbyid[id]) {
+ collapse(id, recursive, !node.collapsed);
+ }
+ }
+
+ /**
+ * Select a tree node by it's ID
+ */
+ function select(id)
+ {
+ if (selection) {
+ id2dom(selection).removeClass('selected');
+ selection = null;
+ }
+
+ var li = id2dom(id);
+ if (li.length) {
+ li.addClass('selected');
+ selection = id;
+ // TODO: expand all parent nodes if collapsed
+ scroll_to_node(li);
+ }
+
+ me.triggerEvent('select', indexbyid[id]);
+ }
+
+ /**
+ * Getter for the currently selected node ID
+ */
+ function get_selection()
+ {
+ return selection;
+ }
+
+ /**
+ * Return the DOM element of the list item with the given ID
+ */
+ function get_item(id)
+ {
+ return id2dom(id).get(0);
+ }
+
+ /**
+ * Apply the 'collapsed' status of the data node to the corresponding DOM element(s)
+ */
+ function update_dom(node)
+ {
+ var li = id2dom(node.id);
+ li.children('ul').first()[(node.collapsed ? 'hide' : 'show')]();
+ li.children('div.treetoggle').removeClass('collapsed expanded').addClass(node.collapsed ? 'collapsed' : 'expanded');
+ me.triggerEvent('toggle', node);
+ }
+
+ /**
+ * Render the tree list from the internal data structure
+ */
+ function render()
+ {
+ if (me.triggerEvent('renderBefore', data) === false)
+ return;
+
+ // remove all child nodes
+ container.html('');
+
+ // render child nodes
+ for (var i=0; i < data.length; i++) {
+ render_node(data[i], container);
+ }
+
+ me.triggerEvent('renderAfter', container);
+ }
+
+ /**
+ * Render a specific node into the DOM list
+ */
+ function render_node(node, parent)
+ {
+ var li = $('<li>' + node.html + '</li>')
+ .attr('id', p.id_prefix + node.id)
+ .addClass((node.classes || []).join(' '))
+ .appendTo(parent);
+
+ if (node.virtual)
+ li.addClass('virtual');
+ if (node.id == selection)
+ li.addClass('selected');
+
+ // add child list and toggle icon
+ if (node.children && node.children.length) {
+ $('<div class="treetoggle '+(node.collapsed ? 'collapsed' : 'expanded') + '">&nbsp;</div>').appendTo(li);
+ var ul = $('<ul>').appendTo(li);
+ if (node.collapsed)
+ ul.hide();
+
+ for (var i=0; i < node.children.length; i++) {
+ render_node(node.children[i], ul);
+ }
+ }
+ }
+
+ /**
+ * Recursively walk the DOM tree and build an internal data structure
+ * representing the skeleton of this tree list.
+ */
+ function walk_list(ul)
+ {
+ var result = [];
+ ul.children('li').each(function(i,e){
+ var li = $(e);
+ var node = {
+ id: dom2id(li),
+ classes: li.attr('class').split(' '),
+ virtual: li.hasClass('virtual'),
+ html: li.children().first().get(0).outerHTML,
+ children: walk_list(li.children('ul'))
+ }
+
+ if (node.children.length) {
+ node.collapsed = li.children('ul').css('display') == 'none';
+ }
+ if (li.hasClass('selected')) {
+ selection = node.id;
+ }
+
+ result.push(node);
+ indexbyid[node.id] = node;
+ })
+
+ return result;
+ }
+
+ /**
+ * Recursively walk the data tree and index nodes by their ID
+ */
+ function index_data(node)
+ {
+ if (node.id) {
+ indexbyid[node.id] = node;
+ }
+ for (var c=0; node.children && c < node.children.length; c++) {
+ index_data(node.children[c]);
+ }
+ }
+
+ /**
+ * Get the (stripped) node ID from the given DOM element
+ */
+ function dom2id(li)
+ {
+ var domid = li.attr('id').replace(new RegExp('^' + (p.id_prefix) || '%'), '');
+ return p.id_decode ? p.id_decode(domid) : domid;
+ }
+
+ /**
+ * Get the <li> element for the given node ID
+ */
+ function id2dom(id)
+ {
+ var domid = p.id_encode ? p.id_encode(id) : id;
+ return $('#' + p.id_prefix + domid);
+ }
+
+ /**
+ * Scroll the parent container to make the given list item visible
+ */
+ function scroll_to_node(li)
+ {
+ var scroller = container.parent();
+ scroller.scrollTop(li.offset().top - scroller.offset().top + scroller.scrollTop());
+ }
+
+ ///// drag & drop support
+
+ /**
+ * When dragging starts, compute absolute bounding boxes of the list and it's items
+ * for faster comparisons while mouse is moving
+ */
+ function drag_start()
+ {
+ var li, item, height,
+ pos = container.offset();
+
+ body_scroll_top = bw.ie ? 0 : window.pageYOffset;
+ list_scroll_top = container.parent().scrollTop();
+
+ drag_active = true;
+ box_coords = {
+ x1: pos.left,
+ y1: pos.top,
+ x2: pos.left + container.width(),
+ y2: pos.top + container.height()
+ };
+
+ item_coords = [];
+ for (var id in indexbyid) {
+ li = id2dom(id);
+ item = li.children().first().get(0);
+ if (height = item.offsetHeight) {
+ pos = $(item).offset();
+ item_coords[id] = {
+ x1: pos.left,
+ y1: pos.top,
+ x2: pos.left + item.offsetWidth,
+ y2: pos.top + height,
+ on: id == autoexpand_item
+ };
+ }
+ }
+ }
+
+ /**
+ * Signal that dragging has stopped
+ */
+ function drag_end()
+ {
+ drag_active = false;
+
+ if (autoexpand_timer) {
+ clearTimeout(autoexpand_timer);
+ autoexpand_timer = null;
+ autoexpand_item = null;
+ }
+
+ $('li.droptarget', container).removeClass('droptarget');
+ }
+
+ /**
+ * Determine if the given mouse coords intersect the list and one if its items
+ */
+ function intersects(mouse, highlight)
+ {
+ // offsets to compensate for scrolling while dragging a message
+ var boffset = bw.ie ? -document.documentElement.scrollTop : body_scroll_top,
+ moffset = list_scroll_top - container.parent().scrollTop(),
+ result = null;
+
+ mouse.top = mouse.y + -moffset - boffset;
+
+ // 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');
+ return result;
+ }
+
+ // check intersection with visible list items
+ var pos, node;
+ for (var 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];
+
+ // if the folder is collapsed, expand it after the configured time
+ if (node.children && node.children.length && node.collapsed && p.autoexpand && autoexpand_item != id) {
+ if (autoexpand_timer)
+ clearTimeout(autoexpand_timer);
+
+ autoexpand_item = id;
+ autoexpand_timer = setTimeout(function() {
+ expand(autoexpand_item);
+ drag_start(); // re-calculate item coords
+ autoexpand_item = null;
+ }, p.autoexpand);
+ }
+ else if (autoexpand_timer && autoexpand_item != id) {
+ clearTimeout(autoexpand_timer);
+ autoexpand_item = null;
+ autoexpand_timer = null;
+ }
+
+ // check if this item is accepted as drop target
+ if (p.check_droptarget(node)) {
+ if (highlight) {
+ id2dom(id).addClass('droptarget');
+ pos.on = true;
+ }
+ result = id;
+ }
+ else {
+ result = null;
+ }
+ }
+ else if (pos.on) {
+ id2dom(id).removeClass('droptarget');
+ pos.on = false;
+ }
+ }
+
+ return result;
+ }
+}
+
+// use event processing functions from Roundcube's rcube_event_engine
+rcube_treelist_widget.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
+rcube_treelist_widget.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
+rcube_treelist_widget.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;