/**
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* Roundcube Treelist Widget
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*
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* This file is part of the Roundcube Webmail client
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*
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* @licstart The following is the entire license notice for the
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* JavaScript code in this file.
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*
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* Copyright (c) 2013-2014, The Roundcube Dev Team
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*
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* The JavaScript code in this page is free software: you can
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* redistribute it and/or modify it under the terms of the GNU
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* General Public License (GNU GPL) as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option)
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* any later version. The code is distributed WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
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*
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* As additional permission under GNU GPL version 3 section 7, you
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* may distribute non-source (e.g., minimized or compacted) forms of
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* that code without the copy of the GNU GPL normally required by
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* section 4, provided you include this license notice and a URL
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* through which recipients can access the Corresponding Source.
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*
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* @licend The above is the entire license notice
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* for the JavaScript code in this file.
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*
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* @author Thomas Bruederli <roundcube@gmail.com>
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* @requires jquery.js, common.js
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*/
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/**
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* Roundcube Treelist widget class
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* @contructor
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*/
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function rcube_treelist_widget(node, p)
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{
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// apply some defaults to p
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p = $.extend({
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id_prefix: '',
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autoexpand: 1000,
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selectable: false,
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scroll_delay: 500,
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scroll_step: 5,
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scroll_speed: 20,
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save_state: false,
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keyboard: true,
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tabexit: true,
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parent_focus: false,
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check_droptarget: function(node) { return !node.virtual; }
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}, p || {});
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var container = $(node),
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data = p.data || [],
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indexbyid = {},
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selection = null,
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drag_active = false,
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search_active = false,
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last_search = '',
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has_focus = false,
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box_coords = {},
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item_coords = [],
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autoexpand_timer,
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autoexpand_item,
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body_scroll_top = 0,
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list_scroll_top = 0,
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scroll_timer,
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searchfield,
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tree_state,
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ui_droppable,
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ui_draggable,
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draggable_opts,
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droppable_opts,
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list_id = (container.attr('id') || p.id_prefix || '0'),
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me = this;
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/////// export public members and methods
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this.container = container;
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this.expand = expand;
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this.collapse = collapse;
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this.select = select;
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this.render = render;
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this.reset = reset;
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this.drag_start = drag_start;
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this.drag_end = drag_end;
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this.intersects = intersects;
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this.droppable = droppable;
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this.draggable = draggable;
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this.update = update_node;
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this.insert = insert;
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this.remove = remove;
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this.get_item = get_item;
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this.get_node = get_node;
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this.get_selection = get_selection;
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this.is_search = is_search;
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this.reset_search = reset_search;
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/////// startup code (constructor)
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// abort if node not found
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if (!container.length)
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return;
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if (p.data)
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index_data({ children:data });
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// load data from DOM
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else
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update_data();
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container.attr('role', 'tree')
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.on('focusin', function(e) {
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// TODO: only accept focus on virtual nodes from keyboard events
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has_focus = true;
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})
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.on('focusout', function(e) {
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has_focus = false;
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})
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// register click handlers on list
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.on('click', 'div.treetoggle', function(e) {
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toggle(dom2id($(this).parent()));
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e.stopPropagation();
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})
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.on('click', 'li', function(e) {
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// do not select record on checkbox/input click
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if ($(e.target).is('input'))
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return true;
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var node = p.selectable ? indexbyid[dom2id($(this))] : null;
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if (node && !node.virtual) {
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select(node.id);
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e.stopPropagation();
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}
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})
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// mute clicks on virtual folder links (they need tabindex="0" in order to be selectable by keyboard)
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.on('mousedown', 'a', function(e) {
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var link = $(e.target), node = indexbyid[dom2id(link.closest('li'))];
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if (node && node.virtual && !link.attr('href')) {
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e.preventDefault();
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e.stopPropagation();
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return false;
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}
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});
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// activate search function
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if (p.searchbox) {
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searchfield = $(p.searchbox).off('keyup.treelist').on('keyup.treelist', function(e) {
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var key = rcube_event.get_keycode(e),
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mod = rcube_event.get_modifier(e);
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switch (key) {
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case 9: // tab
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break;
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case 13: // enter
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search(this.value, true);
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return rcube_event.cancel(e);
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case 27: // escape
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reset_search();
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break;
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case 38: // arrow up
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case 37: // left
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case 39: // right
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case 40: // arrow down
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return; // ignore arrow keys
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default:
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search(this.value, false);
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break;
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}
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}).attr('autocomplete', 'off');
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// find the reset button for this search field
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searchfield.parent().find('a.reset').off('click.treelist').on('click.treelist', function(e) {
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reset_search();
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return false;
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})
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}
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$(document.body).on('keydown', keypress);
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// catch focus when clicking the list container area
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if (p.parent_focus) {
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container.parent(':not(body)').click(function(e) {
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if (!has_focus && selection) {
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$(get_item(selection)).find(':focusable').first().focus();
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}
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else if (!has_focus) {
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container.children('li:has(:focusable)').first().find(':focusable').first().focus();
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}
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});
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}
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/////// private methods
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/**
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* Collaps a the node with the given ID
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*/
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function collapse(id, recursive, set)
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{
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var node;
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if (node = indexbyid[id]) {
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node.collapsed = typeof set == 'undefined' || set;
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update_dom(node);
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if (recursive && node.children) {
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for (var i=0; i < node.children.length; i++) {
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collapse(node.children[i].id, recursive, set);
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}
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}
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me.triggerEvent(node.collapsed ? 'collapse' : 'expand', node);
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save_state(id, node.collapsed);
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}
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}
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/**
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* Expand a the node with the given ID
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*/
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function expand(id, recursive)
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{
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collapse(id, recursive, false);
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}
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/**
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* Toggle collapsed state of a list node
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*/
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function toggle(id, recursive)
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{
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var node;
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if (node = indexbyid[id]) {
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collapse(id, recursive, !node.collapsed);
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}
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}
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/**
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* Select a tree node by it's ID
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*/
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function select(id)
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{
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// allow subscribes to prevent selection change
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if (me.triggerEvent('beforeselect', indexbyid[id]) === false) {
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return;
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}
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if (selection) {
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id2dom(selection, true).removeClass('selected').removeAttr('aria-selected');
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if (search_active)
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id2dom(selection).removeClass('selected').removeAttr('aria-selected');
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selection = null;
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}
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if (!id)
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return;
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var li = id2dom(id, true);
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if (li.length) {
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li.addClass('selected').attr('aria-selected', 'true');
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selection = id;
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// TODO: expand all parent nodes if collapsed
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if (search_active)
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id2dom(id).addClass('selected').attr('aria-selected', 'true');
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scroll_to_node(li);
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}
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me.triggerEvent('select', indexbyid[id]);
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}
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/**
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* Getter for the currently selected node ID
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*/
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function get_selection()
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{
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return selection;
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}
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/**
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* Return the DOM element of the list item with the given ID
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*/
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function get_node(id)
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{
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return indexbyid[id];
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}
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/**
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* Return the DOM element of the list item with the given ID
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*/
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function get_item(id, real)
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{
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return id2dom(id, real).get(0);
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}
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/**
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* Insert the given node
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*/
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function insert(node, parent_id, sort)
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{
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var li, parent_li,
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parent_node = parent_id ? indexbyid[parent_id] : null
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search_ = search_active;
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// ignore, already exists
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if (indexbyid[node.id]) {
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return;
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}
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// apply saved state
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state = get_state(node.id, node.collapsed);
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if (state !== undefined) {
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node.collapsed = state;
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}
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// insert as child of an existing node
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if (parent_node) {
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node.level = parent_node.level + 1;
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if (!parent_node.children)
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parent_node.children = [];
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search_active = false;
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parent_node.children.push(node);
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parent_li = id2dom(parent_id);
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// re-render the entire subtree
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if (parent_node.children.length == 1) {
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render_node(parent_node, null, parent_li);
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li = id2dom(node.id);
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}
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else {
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// append new node to parent's child list
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li = render_node(node, parent_li.children('ul').first());
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}
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// list is in search mode
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if (search_) {
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search_active = search_;
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// add clone to current search results (top level)
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if (!li.is(':visible')) {
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$('<li>')
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.attr('id', li.attr('id') + '--xsR')
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.attr('class', li.attr('class'))
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.addClass('searchresult__')
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.append(li.children().first().clone(true, true))
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.appendTo(container);
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}
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}
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}
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// insert at top level
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else {
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node.level = 0;
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data.push(node);
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li = render_node(node, container);
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}
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indexbyid[node.id] = node;
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// set new reference to node.html after insert
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// will otherwise vanish in Firefox 3.6
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if (typeof node.html == 'object') {
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indexbyid[node.id].html = id2dom(node.id, true).children();
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}
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if (sort) {
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resort_node(li, typeof sort == 'string' ? '[class~="' + sort + '"]' : '');
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}
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}
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/**
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* Update properties of an existing node
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*/
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function update_node(id, updates, sort)
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{
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var li, parent_ul, parent_node, old_parent,
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node = indexbyid[id];
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if (node) {
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li = id2dom(id);
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parent_ul = li.parent();
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if (updates.id || updates.html || updates.children || updates.classes || updates.parent) {
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if (updates.parent && (parent_node = indexbyid[updates.parent])) {
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// remove reference from old parent's child list
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if (parent_ul.closest('li').length && (old_parent = indexbyid[dom2id(parent_ul.closest('li'))])) {
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old_parent.children = $.grep(old_parent.children, function(elem, i){ return elem.id != node.id; });
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}
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// append to new parent node
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parent_ul = id2dom(updates.parent).children('ul').first();
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if (!parent_node.children)
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parent_node.children = [];
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parent_node.children.push(node);
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}
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else if (updates.parent !== undefined) {
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parent_ul = container;
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}
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$.extend(node, updates);
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li = render_node(node, parent_ul, li);
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}
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if (node.id != id) {
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delete indexbyid[id];
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indexbyid[node.id] = node;
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}
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if (sort) {
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resort_node(li, typeof sort == 'string' ? '[class~="' + sort + '"]' : '');
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}
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}
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}
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/**
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* Helper method to sort the list of the given item
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*/
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function resort_node(li, filter)
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{
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var first, sibling,
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myid = li.get(0).id,
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sortname = li.children().first().text().toUpperCase();
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li.parent().children('li' + filter).each(function(i, elem) {
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if (i == 0)
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first = elem;
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if (elem.id == myid) {
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// skip
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}
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else if (elem.id != myid && sortname >= $(elem).children().first().text().toUpperCase()) {
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sibling = elem;
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}
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else {
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return false;
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}
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});
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if (sibling) {
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li.insertAfter(sibling);
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}
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else if (first && first.id != myid) {
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li.insertBefore(first);
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}
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// reload data from dom
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update_data();
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}
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/**
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* Remove the item with the given ID
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*/
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function remove(id)
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{
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var node, li;
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if (node = indexbyid[id]) {
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li = id2dom(id, true);
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li.remove();
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node.deleted = true;
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delete indexbyid[id];
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if (search_active) {
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id2dom(id, false).remove();
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}
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return true;
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}
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return false;
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}
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/**
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* (Re-)read tree data from DOM
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*/
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function update_data()
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{
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data = walk_list(container, 0);
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}
|
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/**
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* Apply the 'collapsed' status of the data node to the corresponding DOM element(s)
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*/
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function update_dom(node)
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{
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var li = id2dom(node.id, true);
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li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
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li.children('ul').first()[(node.collapsed ? 'hide' : 'show')]();
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li.children('div.treetoggle').removeClass('collapsed expanded').addClass(node.collapsed ? 'collapsed' : 'expanded');
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me.triggerEvent('toggle', node);
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}
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|
/**
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*
|
*/
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function reset(keep_content)
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{
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select('');
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data = [];
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indexbyid = {};
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drag_active = false;
|
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if (keep_content) {
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if (draggable_opts) {
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if (ui_draggable)
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draggable('destroy');
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draggable(draggable_opts);
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}
|
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if (droppable_opts) {
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if (ui_droppable)
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droppable('destroy');
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droppable(droppable_opts);
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}
|
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update_data();
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}
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else {
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container.html('');
|
}
|
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reset_search();
|
}
|
|
/**
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*
|
*/
|
function search(q, enter)
|
{
|
q = String(q).toLowerCase();
|
|
if (!q.length)
|
return reset_search();
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else if (q == last_search && !enter)
|
return 0;
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var hits = [];
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var search_tree = function(items) {
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$.each(items, function(i, node) {
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var li, sli;
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if (!node.virtual && !node.deleted && String(node.text).toLowerCase().indexOf(q) >= 0 && hits.indexOf(node.id) < 0) {
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li = id2dom(node.id);
|
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// skip already filtered nodes
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if (li.data('filtered'))
|
return;
|
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sli = $('<li>')
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.attr('id', li.attr('id') + '--xsR')
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.attr('class', li.attr('class'))
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.addClass('searchresult__')
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// append all elements like links and inputs, but not sub-trees
|
.append(li.children(':not(div.treetoggle,ul)').clone(true, true))
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.appendTo(container);
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hits.push(node.id);
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}
|
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if (node.children && node.children.length) {
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search_tree(node.children);
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}
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});
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};
|
|
// 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');
|
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// search recursively in tree (to keep sorting order)
|
search_tree(data);
|
search_active = true;
|
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me.triggerEvent('search', { query: q, last: last_search, count: hits.length, ids: hits, execute: enter||false });
|
|
last_search = q;
|
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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;
|
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me.triggerEvent('search', { query: false, last: last_search });
|
last_search = '';
|
|
if (selection)
|
select(selection);
|
}
|
|
/**
|
*
|
*/
|
function is_search()
|
{
|
return search_active;
|
}
|
|
/**
|
* 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++) {
|
data[i].level = 0;
|
render_node(data[i], container);
|
}
|
|
me.triggerEvent('renderAfter', container);
|
}
|
|
/**
|
* Render a specific node into the DOM list
|
*/
|
function render_node(node, parent, replace)
|
{
|
if (node.deleted)
|
return;
|
|
var li = $('<li>')
|
.attr('id', p.id_prefix + (p.id_encode ? p.id_encode(node.id) : node.id))
|
.attr('role', 'treeitem')
|
.addClass((node.classes || []).join(' '))
|
.data('id', node.id);
|
|
if (replace) {
|
replace.replaceWith(li);
|
if (parent)
|
li.appendTo(parent);
|
}
|
else
|
li.appendTo(parent);
|
|
if (typeof node.html == 'string')
|
li.html(node.html);
|
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)
|
li.addClass('selected');
|
|
// 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') + '"> </div>').appendTo(li);
|
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);
|
}
|
}
|
|
return li;
|
}
|
|
/**
|
* Recursively walk the DOM tree and build an internal data structure
|
* representing the skeleton of this tree list.
|
*/
|
function walk_list(ul, level)
|
{
|
var result = [];
|
ul.children('li').each(function(i,e){
|
var state, li = $(e), sublist = li.children('ul');
|
var node = {
|
id: dom2id(li),
|
classes: String(li.attr('class')).split(' '),
|
virtual: li.hasClass('virtual'),
|
level: level,
|
html: li.children().first().get(0).outerHTML,
|
text: li.children().first().text(),
|
children: walk_list(sublist, level+1)
|
}
|
|
if (sublist.length) {
|
node.childlistclass = sublist.attr('class');
|
}
|
if (node.children.length) {
|
if (node.collapsed === undefined)
|
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)
|
$('<div class="treetoggle '+(node.collapsed ? 'collapsed' : 'expanded') + '"> </div>').appendTo(li);
|
|
li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
|
}
|
if (li.hasClass('selected')) {
|
li.attr('aria-selected', 'true');
|
selection = node.id;
|
}
|
|
li.data('id', node.id);
|
|
// declare list item as treeitem
|
li.attr('role', 'treeitem').attr('aria-level', node.level+1);
|
|
// allow virtual nodes to receive focus
|
if (node.virtual) {
|
li.children('a:first').attr('tabindex', '0');
|
}
|
|
result.push(node);
|
indexbyid[node.id] = node;
|
});
|
|
ul.attr('role', level == 0 ? 'tree' : 'group');
|
|
return result;
|
}
|
|
/**
|
* Recursively walk the data tree and index nodes by their ID
|
*/
|
function index_data(node)
|
{
|
if (node.id) {
|
indexbyid[node.id] = node;
|
}
|
for (var c=0; node.children && c < node.children.length; c++) {
|
index_data(node.children[c]);
|
}
|
}
|
|
/**
|
* Get the (stripped) node ID from the given DOM element
|
*/
|
function dom2id(li)
|
{
|
var domid = String(li.attr('id')).replace(new RegExp('^' + (p.id_prefix) || '%'), '').replace(/--xsR$/, '');
|
return p.id_decode ? p.id_decode(domid) : domid;
|
}
|
|
/**
|
* Get the <li> element for the given node ID
|
*/
|
function id2dom(id, real)
|
{
|
var domid = p.id_encode ? p.id_encode(id) : id,
|
suffix = search_active && !real ? '--xsR' : '';
|
|
return $('#' + p.id_prefix + domid + suffix, container);
|
}
|
|
/**
|
* Scroll the parent container to make the given list item visible
|
*/
|
function scroll_to_node(li)
|
{
|
var scroller = container.parent(),
|
current_offset = scroller.scrollTop(),
|
rel_offset = li.offset().top - scroller.offset().top;
|
|
if (rel_offset < 0 || rel_offset + li.height() > scroller.height())
|
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
|
|
/**
|
* When dragging starts, compute absolute bounding boxes of the list and it's items
|
* for faster comparisons while mouse is moving
|
*/
|
function drag_start(force)
|
{
|
if (!force && drag_active)
|
return;
|
|
drag_active = true;
|
|
var li, item, height,
|
pos = container.offset();
|
|
body_scroll_top = bw.ie ? 0 : window.pageYOffset;
|
list_scroll_top = container.parent().scrollTop();
|
pos.top += list_scroll_top;
|
|
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 (item && (height = item.offsetHeight)) {
|
pos = $(item).offset();
|
pos.top += list_scroll_top;
|
item_coords[id] = {
|
x1: pos.left,
|
y1: pos.top,
|
x2: pos.left + item.offsetWidth,
|
y2: pos.top + height,
|
on: id == autoexpand_item
|
};
|
}
|
}
|
|
// enable auto-scrolling of list container
|
if (container.height() > container.parent().height()) {
|
container.parent()
|
.mousemove(function(e) {
|
var scroll = 0,
|
mouse = rcube_event.get_mouse_pos(e);
|
mouse.y -= container.parent().offset().top;
|
|
if (mouse.y < 25 && list_scroll_top > 0) {
|
scroll = -1; // up
|
}
|
else if (mouse.y > container.parent().height() - 25) {
|
scroll = 1; // down
|
}
|
|
if (drag_active && scroll != 0) {
|
if (!scroll_timer)
|
scroll_timer = window.setTimeout(function(){ drag_scroll(scroll); }, p.scroll_delay);
|
}
|
else if (scroll_timer) {
|
window.clearTimeout(scroll_timer);
|
scroll_timer = null;
|
}
|
})
|
.mouseleave(function() {
|
if (scroll_timer) {
|
window.clearTimeout(scroll_timer);
|
scroll_timer = null;
|
}
|
});
|
}
|
}
|
|
/**
|
* Signal that dragging has stopped
|
*/
|
function drag_end()
|
{
|
if (!drag_active)
|
return;
|
|
drag_active = false;
|
scroll_timer = null;
|
|
if (autoexpand_timer) {
|
clearTimeout(autoexpand_timer);
|
autoexpand_timer = null;
|
autoexpand_item = null;
|
}
|
|
$('li.droptarget', container).removeClass('droptarget');
|
}
|
|
/**
|
* Scroll list container in the given direction
|
*/
|
function drag_scroll(dir)
|
{
|
if (!drag_active)
|
return;
|
|
var old_top = list_scroll_top;
|
container.parent().get(0).scrollTop += p.scroll_step * dir;
|
list_scroll_top = container.parent().scrollTop();
|
scroll_timer = null;
|
|
if (list_scroll_top != old_top)
|
scroll_timer = window.setTimeout(function(){ drag_scroll(dir); }, p.scroll_speed);
|
}
|
|
/**
|
* Determine if the given mouse coords intersect the list and one of 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 = 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
|
if (highlight)
|
$('li.droptarget', container).removeClass('droptarget');
|
return result;
|
}
|
|
// check intersection with visible list items
|
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];
|
|
// 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(true); // 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) {
|
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;
|
}
|
|
/**
|
* 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
|
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;
|
