commit | author | age
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/** |
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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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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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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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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.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_selection = get_selection; |
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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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// register click handlers on list |
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container.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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container.on('click', 'li', function(e){ |
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var node = p.selectable ? indexbyid[dom2id($(this))] : null; |
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if (node && !node.virtual) { |
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select(node.id); |
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e.stopPropagation(); |
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} |
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}); |
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container.on('focusin', function(e){ |
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// TODO: only accept focus on virtual nodes from keyboard events |
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has_focus = true; |
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}) |
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.on('focusout', function(e){ |
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has_focus = false; |
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}); |
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container.attr('role', 'tree'); |
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$(document.body) |
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.bind('keydown', keypress); |
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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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} |
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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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if (selection) { |
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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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var li = id2dom(id); |
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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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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_item(id) |
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{ |
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return id2dom(id).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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// insert as child of an existing node |
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if (parent_node) { |
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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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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, parent_li.parent(), 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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} |
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// insert at top level |
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else { |
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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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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, node = indexbyid[id]; |
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if (node) { |
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li = id2dom(id); |
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if (updates.id || updates.html || updates.children || updates.classes) { |
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$.extend(node, updates); |
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render_node(node, li.parent(), 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.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); |
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li.remove(); |
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node.deleted = true; |
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delete indexbyid[id]; |
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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); |
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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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*/ |
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function reset() |
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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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container.html(''); |
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} |
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/** |
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* Render the tree list from the internal data structure |
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*/ |
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function render() |
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{ |
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if (me.triggerEvent('renderBefore', data) === false) |
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return; |
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// remove all child nodes |
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container.html(''); |
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// render child nodes |
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for (var i=0; i < data.length; i++) { |
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render_node(data[i], container); |
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} |
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me.triggerEvent('renderAfter', container); |
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} |
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/** |
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* Render a specific node into the DOM list |
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*/ |
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function render_node(node, parent, replace) |
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{ |
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if (node.deleted) |
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return; |
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var li = $('<li>') |
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.attr('id', p.id_prefix + (p.id_encode ? p.id_encode(node.id) : node.id)) |
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.attr('role', 'treeitem') |
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.addClass((node.classes || []).join(' ')); |
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if (replace) |
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replace.replaceWith(li); |
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else |
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li.appendTo(parent); |
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if (typeof node.html == 'string') |
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li.html(node.html); |
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else if (typeof node.html == 'object') |
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li.append(node.html); |
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if (node.virtual) |
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li.addClass('virtual'); |
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if (node.id == selection) |
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li.addClass('selected'); |
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// add child list and toggle icon |
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if (node.children && node.children.length) { |
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li.attr('aria-expanded', node.collapsed ? 'false' : 'true'); |
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$('<div class="treetoggle '+(node.collapsed ? 'collapsed' : 'expanded') + '"> </div>').appendTo(li); |
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var ul = $('<ul>').appendTo(li).attr('class', node.childlistclass).attr('role', 'group'); |
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if (node.collapsed) |
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ul.hide(); |
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for (var i=0; i < node.children.length; i++) { |
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render_node(node.children[i], ul); |
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} |
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} |
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return li; |
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} |
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/** |
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* Recursively walk the DOM tree and build an internal data structure |
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* representing the skeleton of this tree list. |
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*/ |
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function walk_list(ul, level) |
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{ |
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var result = []; |
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ul.children('li').each(function(i,e){ |
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var li = $(e), sublist = li.children('ul'); |
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var node = { |
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id: dom2id(li), |
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classes: li.attr('class').split(' '), |
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virtual: li.hasClass('virtual'), |
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html: li.children().first().get(0).outerHTML, |
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children: walk_list(sublist, level+1) |
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} |
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if (sublist.length) { |
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node.childlistclass = sublist.attr('class'); |
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} |
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if (node.children.length) { |
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node.collapsed = sublist.css('display') == 'none'; |
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li.attr('aria-expanded', node.collapsed ? 'false' : 'true'); |
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} |
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if (li.hasClass('selected')) { |
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li.attr('aria-selected', 'true'); |
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selection = node.id; |
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} |
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// declare list item as treeitem |
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li.attr('role', 'treeitem'); |
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|
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// allow virtual nodes to receive focus |
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if (node.virtual) { |
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li.children('a:first').attr('tabindex', '0'); |
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} |
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454 |
|
ec0f74
|
455 |
result.push(node); |
AM |
456 |
indexbyid[node.id] = node; |
eb9551
|
457 |
}); |
TB |
458 |
|
a2f8fa
|
459 |
ul.attr('role', level == 0 ? 'tree' : 'group'); |
3c309a
|
460 |
|
ec0f74
|
461 |
return result; |
AM |
462 |
} |
3c309a
|
463 |
|
ec0f74
|
464 |
/** |
AM |
465 |
* Recursively walk the data tree and index nodes by their ID |
|
466 |
*/ |
|
467 |
function index_data(node) |
|
468 |
{ |
|
469 |
if (node.id) { |
|
470 |
indexbyid[node.id] = node; |
|
471 |
} |
|
472 |
for (var c=0; node.children && c < node.children.length; c++) { |
|
473 |
index_data(node.children[c]); |
|
474 |
} |
|
475 |
} |
3c309a
|
476 |
|
ec0f74
|
477 |
/** |
AM |
478 |
* Get the (stripped) node ID from the given DOM element |
|
479 |
*/ |
|
480 |
function dom2id(li) |
|
481 |
{ |
|
482 |
var domid = li.attr('id').replace(new RegExp('^' + (p.id_prefix) || '%'), ''); |
|
483 |
return p.id_decode ? p.id_decode(domid) : domid; |
|
484 |
} |
3c309a
|
485 |
|
ec0f74
|
486 |
/** |
AM |
487 |
* Get the <li> element for the given node ID |
|
488 |
*/ |
|
489 |
function id2dom(id) |
|
490 |
{ |
|
491 |
var domid = p.id_encode ? p.id_encode(id) : id; |
|
492 |
return $('#' + p.id_prefix + domid); |
|
493 |
} |
3c309a
|
494 |
|
ec0f74
|
495 |
/** |
AM |
496 |
* Scroll the parent container to make the given list item visible |
|
497 |
*/ |
|
498 |
function scroll_to_node(li) |
|
499 |
{ |
|
500 |
var scroller = container.parent(), |
|
501 |
current_offset = scroller.scrollTop(), |
|
502 |
rel_offset = li.offset().top - scroller.offset().top; |
d6185f
|
503 |
|
ec0f74
|
504 |
if (rel_offset < 0 || rel_offset + li.height() > scroller.height()) |
AM |
505 |
scroller.scrollTop(rel_offset + current_offset); |
|
506 |
} |
3c309a
|
507 |
|
eb9551
|
508 |
/** |
TB |
509 |
* Handler for keyboard events on treelist |
|
510 |
*/ |
|
511 |
function keypress(e) |
|
512 |
{ |
|
513 |
var target = e.target || {}, |
|
514 |
keyCode = rcube_event.get_keycode(e); |
|
515 |
|
|
516 |
if (!has_focus || target.nodeName == 'INPUT' || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT') |
|
517 |
return true; |
|
518 |
|
|
519 |
switch (keyCode) { |
|
520 |
case 38: |
|
521 |
case 40: |
|
522 |
case 63232: // 'up', in safari keypress |
|
523 |
case 63233: // 'down', in safari keypress |
|
524 |
var li = container.find(':focus').closest('li'); |
|
525 |
if (li.length) { |
|
526 |
focus_next(li, (mod = keyCode == 38 || keyCode == 63232 ? -1 : 1)); |
|
527 |
} |
|
528 |
break; |
|
529 |
|
|
530 |
case 37: // Left arrow key |
|
531 |
case 39: // Right arrow key |
|
532 |
var id, node, li = container.find(':focus').closest('li'); |
|
533 |
if (li.length) { |
|
534 |
id = dom2id(li); |
|
535 |
node = indexbyid[id]; |
|
536 |
if (node && node.children.length) |
|
537 |
toggle(id, rcube_event.get_modifier(e) == SHIFT_KEY); // toggle subtree |
|
538 |
} |
|
539 |
return false; |
|
540 |
} |
|
541 |
|
|
542 |
return true; |
|
543 |
} |
|
544 |
|
|
545 |
function focus_next(li, dir, from_child) |
|
546 |
{ |
|
547 |
var mod = dir < 0 ? 'prev' : 'next', |
|
548 |
next = li[mod](), limit, parent; |
|
549 |
|
|
550 |
if (dir > 0 && !from_child && li.children('ul[role=tree]:visible').length) { |
|
551 |
li.children('ul').children('li:first').children('a:first').focus(); |
|
552 |
} |
|
553 |
else if (dir < 0 && !from_child && next.children('ul[role=tree]:visible').length) { |
|
554 |
next.children('ul').children('li:last').children('a:last').focus(); |
|
555 |
} |
|
556 |
else if (next.length && next.children('a:first')) { |
|
557 |
next.children('a:first').focus(); |
|
558 |
} |
|
559 |
else { |
|
560 |
parent = li.parent().closest('li[role=treeitem]'); |
|
561 |
if (parent.length) |
|
562 |
if (dir < 0) { |
|
563 |
parent.children('a:first').focus(); |
|
564 |
} |
|
565 |
else { |
|
566 |
focus_next(parent, dir, true); |
|
567 |
} |
|
568 |
} |
|
569 |
} |
|
570 |
|
|
571 |
|
ec0f74
|
572 |
///// drag & drop support |
3c309a
|
573 |
|
ec0f74
|
574 |
/** |
AM |
575 |
* When dragging starts, compute absolute bounding boxes of the list and it's items |
|
576 |
* for faster comparisons while mouse is moving |
|
577 |
*/ |
|
578 |
function drag_start() |
|
579 |
{ |
|
580 |
var li, item, height, |
|
581 |
pos = container.offset(); |
3c309a
|
582 |
|
ec0f74
|
583 |
body_scroll_top = bw.ie ? 0 : window.pageYOffset; |
AM |
584 |
list_scroll_top = container.parent().scrollTop(); |
72975e
|
585 |
pos.top += list_scroll_top; |
3c309a
|
586 |
|
ec0f74
|
587 |
drag_active = true; |
AM |
588 |
box_coords = { |
|
589 |
x1: pos.left, |
|
590 |
y1: pos.top, |
|
591 |
x2: pos.left + container.width(), |
|
592 |
y2: pos.top + container.height() |
|
593 |
}; |
3c309a
|
594 |
|
ec0f74
|
595 |
item_coords = []; |
AM |
596 |
for (var id in indexbyid) { |
|
597 |
li = id2dom(id); |
|
598 |
item = li.children().first().get(0); |
|
599 |
if (height = item.offsetHeight) { |
|
600 |
pos = $(item).offset(); |
72975e
|
601 |
pos.top += list_scroll_top; |
ec0f74
|
602 |
item_coords[id] = { |
AM |
603 |
x1: pos.left, |
|
604 |
y1: pos.top, |
|
605 |
x2: pos.left + item.offsetWidth, |
|
606 |
y2: pos.top + height, |
|
607 |
on: id == autoexpand_item |
|
608 |
}; |
|
609 |
} |
|
610 |
} |
72975e
|
611 |
|
TB |
612 |
// enable auto-scrolling of list container |
|
613 |
if (container.height() > container.parent().height()) { |
|
614 |
container.parent() |
|
615 |
.mousemove(function(e) { |
|
616 |
var scroll = 0, |
|
617 |
mouse = rcube_event.get_mouse_pos(e); |
|
618 |
mouse.y -= container.parent().offset().top; |
|
619 |
|
|
620 |
if (mouse.y < 25 && list_scroll_top > 0) { |
|
621 |
scroll = -1; // up |
|
622 |
} |
|
623 |
else if (mouse.y > container.parent().height() - 25) { |
|
624 |
scroll = 1; // down |
|
625 |
} |
|
626 |
|
|
627 |
if (drag_active && scroll != 0) { |
|
628 |
if (!scroll_timer) |
|
629 |
scroll_timer = window.setTimeout(function(){ drag_scroll(scroll); }, p.scroll_delay); |
|
630 |
} |
|
631 |
else if (scroll_timer) { |
|
632 |
window.clearTimeout(scroll_timer); |
|
633 |
scroll_timer = null; |
|
634 |
} |
|
635 |
}) |
|
636 |
.mouseleave(function() { |
|
637 |
if (scroll_timer) { |
|
638 |
window.clearTimeout(scroll_timer); |
|
639 |
scroll_timer = null; |
|
640 |
} |
|
641 |
}); |
|
642 |
} |
ec0f74
|
643 |
} |
3c309a
|
644 |
|
ec0f74
|
645 |
/** |
AM |
646 |
* Signal that dragging has stopped |
|
647 |
*/ |
|
648 |
function drag_end() |
|
649 |
{ |
|
650 |
drag_active = false; |
72975e
|
651 |
scroll_timer = null; |
3c309a
|
652 |
|
ec0f74
|
653 |
if (autoexpand_timer) { |
AM |
654 |
clearTimeout(autoexpand_timer); |
|
655 |
autoexpand_timer = null; |
|
656 |
autoexpand_item = null; |
|
657 |
} |
3c309a
|
658 |
|
ec0f74
|
659 |
$('li.droptarget', container).removeClass('droptarget'); |
AM |
660 |
} |
3c309a
|
661 |
|
ec0f74
|
662 |
/** |
72975e
|
663 |
* Scroll list container in the given direction |
TB |
664 |
*/ |
|
665 |
function drag_scroll(dir) |
|
666 |
{ |
|
667 |
if (!drag_active) |
|
668 |
return; |
|
669 |
|
|
670 |
var old_top = list_scroll_top; |
|
671 |
container.parent().get(0).scrollTop += p.scroll_step * dir; |
|
672 |
list_scroll_top = container.parent().scrollTop(); |
|
673 |
scroll_timer = null; |
|
674 |
|
|
675 |
if (list_scroll_top != old_top) |
|
676 |
scroll_timer = window.setTimeout(function(){ drag_scroll(dir); }, p.scroll_speed); |
|
677 |
} |
|
678 |
|
|
679 |
/** |
ec0f74
|
680 |
* Determine if the given mouse coords intersect the list and one if its items |
AM |
681 |
*/ |
|
682 |
function intersects(mouse, highlight) |
|
683 |
{ |
|
684 |
// offsets to compensate for scrolling while dragging a message |
|
685 |
var boffset = bw.ie ? -document.documentElement.scrollTop : body_scroll_top, |
72975e
|
686 |
moffset = container.parent().scrollTop(), |
ec0f74
|
687 |
result = null; |
3c309a
|
688 |
|
72975e
|
689 |
mouse.top = mouse.y + moffset - boffset; |
3c309a
|
690 |
|
ec0f74
|
691 |
// no intersection with list bounding box |
AM |
692 |
if (mouse.x < box_coords.x1 || mouse.x >= box_coords.x2 || mouse.top < box_coords.y1 || mouse.top >= box_coords.y2) { |
|
693 |
// TODO: optimize performance for this operation |
|
694 |
$('li.droptarget', container).removeClass('droptarget'); |
|
695 |
return result; |
|
696 |
} |
3c309a
|
697 |
|
ec0f74
|
698 |
// check intersection with visible list items |
AM |
699 |
var pos, node; |
|
700 |
for (var id in item_coords) { |
|
701 |
pos = item_coords[id]; |
|
702 |
if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.top >= pos.y1 && mouse.top < pos.y2) { |
|
703 |
node = indexbyid[id]; |
3c309a
|
704 |
|
ec0f74
|
705 |
// if the folder is collapsed, expand it after the configured time |
AM |
706 |
if (node.children && node.children.length && node.collapsed && p.autoexpand && autoexpand_item != id) { |
|
707 |
if (autoexpand_timer) |
|
708 |
clearTimeout(autoexpand_timer); |
3c309a
|
709 |
|
ec0f74
|
710 |
autoexpand_item = id; |
AM |
711 |
autoexpand_timer = setTimeout(function() { |
|
712 |
expand(autoexpand_item); |
|
713 |
drag_start(); // re-calculate item coords |
|
714 |
autoexpand_item = null; |
|
715 |
}, p.autoexpand); |
|
716 |
} |
|
717 |
else if (autoexpand_timer && autoexpand_item != id) { |
|
718 |
clearTimeout(autoexpand_timer); |
|
719 |
autoexpand_item = null; |
|
720 |
autoexpand_timer = null; |
|
721 |
} |
3c309a
|
722 |
|
ec0f74
|
723 |
// check if this item is accepted as drop target |
AM |
724 |
if (p.check_droptarget(node)) { |
|
725 |
if (highlight) { |
|
726 |
id2dom(id).addClass('droptarget'); |
|
727 |
pos.on = true; |
|
728 |
} |
|
729 |
result = id; |
|
730 |
} |
|
731 |
else { |
|
732 |
result = null; |
|
733 |
} |
|
734 |
} |
|
735 |
else if (pos.on) { |
|
736 |
id2dom(id).removeClass('droptarget'); |
|
737 |
pos.on = false; |
|
738 |
} |
|
739 |
} |
3c309a
|
740 |
|
ec0f74
|
741 |
return result; |
AM |
742 |
} |
3c309a
|
743 |
} |
TB |
744 |
|
|
745 |
// use event processing functions from Roundcube's rcube_event_engine |
|
746 |
rcube_treelist_widget.prototype.addEventListener = rcube_event_engine.prototype.addEventListener; |
|
747 |
rcube_treelist_widget.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener; |
|
748 |
rcube_treelist_widget.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent; |