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list.js
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/*
+-----------------------------------------------------------------------+
| Roundcube List Widget |
| |
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2006-2013, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
+-----------------------------------------------------------------------+
| Authors: Thomas Bruederli <roundcube@gmail.com> |
| Charles McNulty <charles@charlesmcnulty.com> |
+-----------------------------------------------------------------------+
| Requires: common.js |
+-----------------------------------------------------------------------+
*/
/**
* Roundcube List Widget class
* @contructor
*/
function rcube_list_widget(list, p)
{
// static contants
this.ENTER_KEY = 13;
this.DELETE_KEY = 46;
this.BACKSPACE_KEY = 8;
this.list = list ? list : null;
this.tagname = this.list ? this.list.nodeName.toLowerCase() : 'table';
this.thead;
this.tbody;
this.frame = null;
this.rows = [];
this.selection = [];
this.rowcount = 0;
this.colcount = 0;
this.subject_col = -1;
this.modkey = 0;
this.multiselect = false;
this.multiexpand = false;
this.multi_selecting = false;
this.draggable = false;
this.column_movable = false;
this.keyboard = false;
this.toggleselect = false;
this.dont_select = false;
this.drag_active = false;
this.col_drag_active = false;
this.column_fixed = null;
this.last_selected = 0;
this.shift_start = 0;
this.in_selection_before = false;
this.focused = false;
this.drag_mouse_start = null;
this.dblclick_time = 500; // default value on MS Windows is 500
this.row_init = function(){}; // @deprecated; use list.addEventListener('initrow') instead
// overwrite default paramaters
if (p && typeof p === 'object')
for (var n in p)
this[n] = p[n];
};
rcube_list_widget.prototype = {
/**
* get all message rows from HTML table and init each row
*/
init: function()
{
if (this.tagname == 'table' && this.list && this.list.tBodies[0]) {
this.thead = this.list.tHead;
this.tbody = this.list.tBodies[0];
}
else if (this.tagname != 'table' && this.list) {
this.tbody = this.list;
}
if (this.tbody) {
this.rows = [];
this.rowcount = 0;
var r, len, rows = this.tbody.childNodes;
for (r=0, len=rows.length; r<len; r++) {
this.init_row(rows[r]);
this.rowcount++;
}
this.init_header();
this.frame = this.list.parentNode;
// set body events
if (this.keyboard)
rcube_event.add_listener({event:'keydown', object:this, method:'key_press'});
}
},
/**
* Init list row and set mouse events on it
*/
init_row: function(row)
{
// make references in internal array and set event handlers
if (row && String(row.id).match(/^rcmrow([a-z0-9\-_=\+\/]+)/i)) {
var self = this,
uid = RegExp.$1;
row.uid = uid;
this.rows[uid] = {uid:uid, id:row.id, obj:row};
// set eventhandlers to table row
row.onmousedown = function(e){ return self.drag_row(e, this.uid); };
row.onmouseup = function(e){ return self.click_row(e, this.uid); };
if (bw.mobile) {
row.addEventListener('touchstart', function(e) {
if (e.touches.length == 1) {
if (!self.drag_row(rcube_event.touchevent(e.touches[0]), this.uid))
e.preventDefault();
}
}, false);
row.addEventListener('touchend', function(e) {
if (e.changedTouches.length == 1)
if (!self.click_row(rcube_event.touchevent(e.changedTouches[0]), this.uid))
e.preventDefault();
}, false);
}
if (document.all)
row.onselectstart = function() { return false; };
this.row_init(this.rows[uid]); // legacy support
this.triggerEvent('initrow', this.rows[uid]);
}
},
/**
* Init list column headers and set mouse events on them
*/
init_header: function()
{
if (this.thead) {
this.colcount = 0;
var col, r, p = this;
// add events for list columns moving
if (this.column_movable && this.thead && this.thead.rows) {
for (r=0; r<this.thead.rows[0].cells.length; r++) {
if (this.column_fixed == r)
continue;
col = this.thead.rows[0].cells[r];
col.onmousedown = function(e){ return p.drag_column(e, this); };
this.colcount++;
}
}
}
},
/**
* Remove all list rows
*/
clear: function(sel)
{
if (this.tagname == 'table') {
var tbody = document.createElement('tbody');
this.list.insertBefore(tbody, this.tbody);
this.list.removeChild(this.list.tBodies[1]);
this.tbody = tbody;
}
else {
$(this.row_tagname() + ':not(.thead)', this.tbody).remove();
}
this.rows = [];
this.rowcount = 0;
if (sel)
this.clear_selection();
// reset scroll position (in Opera)
if (this.frame)
this.frame.scrollTop = 0;
},
/**
* 'remove' message row from list (just hide it)
*/
remove_row: function(uid, sel_next)
{
var node = this.rows[uid] ? this.rows[uid].obj : null;
if (!node)
return;
node.style.display = 'none';
if (sel_next)
this.select_next();
delete this.rows[uid];
this.rowcount--;
},
/**
* Add row to the list and initialize it
*/
insert_row: function(row, before)
{
var tbody = this.tbody;
// create a real dom node first
if (row.nodeName === undefined) {
// for performance reasons use DOM instead of jQuery here
var domrow = document.createElement(this.row_tagname());
if (row.id) domrow.id = row.id;
if (row.className) domrow.className = row.className;
if (row.style) $.extend(domrow.style, row.style);
for (var domcell, col, i=0; row.cols && i < row.cols.length; i++) {
col = row.cols[i];
domcell = document.createElement(this.col_tagname());
if (col.className) domcell.className = col.className;
if (col.innerHTML) domcell.innerHTML = col.innerHTML;
domrow.appendChild(domcell);
}
row = domrow;
}
if (before && tbody.childNodes.length)
tbody.insertBefore(row, (typeof before == 'object' && before.parentNode == tbody) ? before : tbody.firstChild);
else
tbody.appendChild(row);
this.init_row(row);
this.rowcount++;
},
/**
*
*/
update_row: function(id, cols, newid, select)
{
var row = this.rows[id];
if (!row) return false;
var domrow = row.obj;
for (var domcell, col, i=0; cols && i < cols.length; i++) {
this.get_cell(domrow, i).html(cols[i]);
}
if (newid) {
delete this.rows[id];
domrow.id = 'rcmrow' + newid;
this.init_row(domrow);
if (select)
this.selection[0] = newid;
}
},
/**
* Set focus to the list
*/
focus: function(e)
{
var n, id;
this.focused = true;
for (n in this.selection) {
id = this.selection[n];
if (this.rows[id] && this.rows[id].obj) {
$(this.rows[id].obj).addClass('selected').removeClass('unfocused');
}
}
// Un-focus already focused elements (#1487123, #1487316, #1488600, #1488620)
// It looks that window.focus() does the job for all browsers, but not Firefox (#1489058)
$(':focus:not(body)').blur();
window.focus();
if (e || (e = window.event))
rcube_event.cancel(e);
},
/**
* remove focus from the list
*/
blur: function()
{
var n, id;
this.focused = false;
for (n in this.selection) {
id = this.selection[n];
if (this.rows[id] && this.rows[id].obj) {
$(this.rows[id].obj).removeClass('selected focused').addClass('unfocused');
}
}
},
/**
* onmousedown-handler of message list column
*/
drag_column: function(e, col)
{
if (this.colcount > 1) {
this.drag_start = true;
this.drag_mouse_start = rcube_event.get_mouse_pos(e);
rcube_event.add_listener({event:'mousemove', object:this, method:'column_drag_mouse_move'});
rcube_event.add_listener({event:'mouseup', object:this, method:'column_drag_mouse_up'});
// enable dragging over iframes
this.add_dragfix();
// find selected column number
for (var i=0; i<this.thead.rows[0].cells.length; i++) {
if (col == this.thead.rows[0].cells[i]) {
this.selected_column = i;
break;
}
}
}
return false;
},
/**
* onmousedown-handler of message list row
*/
drag_row: function(e, id)
{
// don't do anything (another action processed before)
var evtarget = rcube_event.get_target(e),
tagname = evtarget.tagName.toLowerCase();
if (this.dont_select || (evtarget && (tagname == 'input' || tagname == 'img')))
return true;
// accept right-clicks
if (rcube_event.get_button(e) == 2)
return true;
this.in_selection_before = this.in_selection(id) ? id : false;
// selects currently unselected row
if (!this.in_selection_before) {
var mod_key = rcube_event.get_modifier(e);
this.select_row(id, mod_key, false);
}
if (this.draggable && this.selection.length) {
this.drag_start = true;
this.drag_mouse_start = rcube_event.get_mouse_pos(e);
rcube_event.add_listener({event:'mousemove', object:this, method:'drag_mouse_move'});
rcube_event.add_listener({event:'mouseup', object:this, method:'drag_mouse_up'});
if (bw.mobile) {
rcube_event.add_listener({event:'touchmove', object:this, method:'drag_mouse_move'});
rcube_event.add_listener({event:'touchend', object:this, method:'drag_mouse_up'});
}
// enable dragging over iframes
this.add_dragfix();
}
return false;
},
/**
* onmouseup-handler of message list row
*/
click_row: function(e, id)
{
var now = new Date().getTime(),
mod_key = rcube_event.get_modifier(e),
evtarget = rcube_event.get_target(e),
tagname = evtarget.tagName.toLowerCase();
if ((evtarget && (tagname == 'input' || tagname == 'img')))
return true;
// don't do anything (another action processed before)
if (this.dont_select) {
this.dont_select = false;
return false;
}
var dblclicked = now - this.rows[id].clicked < this.dblclick_time;
// unselects currently selected row
if (!this.drag_active && this.in_selection_before == id && !dblclicked)
this.select_row(id, mod_key, false);
this.drag_start = false;
this.in_selection_before = false;
// row was double clicked
if (this.rows && dblclicked && this.in_selection(id)) {
this.triggerEvent('dblclick');
now = 0;
}
else
this.triggerEvent('click');
if (!this.drag_active) {
// remove temp divs
this.del_dragfix();
rcube_event.cancel(e);
}
this.rows[id].clicked = now;
return false;
},
/*
* Returns thread root ID for specified row ID
*/
find_root: function(uid)
{
var r = this.rows[uid];
if (r && r.parent_uid)
return this.find_root(r.parent_uid);
else
return uid;
},
expand_row: function(e, id)
{
var row = this.rows[id],
evtarget = rcube_event.get_target(e),
mod_key = rcube_event.get_modifier(e);
// Don't select this message
this.dont_select = true;
// Don't treat double click on the expando as double click on the message.
row.clicked = 0;
if (row.expanded) {
evtarget.className = 'collapsed';
if (mod_key == CONTROL_KEY || this.multiexpand)
this.collapse_all(row);
else
this.collapse(row);
}
else {
evtarget.className = 'expanded';
if (mod_key == CONTROL_KEY || this.multiexpand)
this.expand_all(row);
else
this.expand(row);
}
},
collapse: function(row)
{
row.expanded = false;
this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
var depth = row.depth;
var new_row = row ? row.obj.nextSibling : null;
var r;
while (new_row) {
if (new_row.nodeType == 1) {
var r = this.rows[new_row.uid];
if (r && r.depth <= depth)
break;
$(new_row).css('display', 'none');
if (r.expanded) {
r.expanded = false;
this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
}
}
new_row = new_row.nextSibling;
}
this.triggerEvent('listupdate');
return false;
},
expand: function(row)
{
var r, p, depth, new_row, last_expanded_parent_depth;
if (row) {
row.expanded = true;
depth = row.depth;
new_row = row.obj.nextSibling;
this.update_expando(row.uid, true);
this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
}
else {
var tbody = this.tbody;
new_row = tbody.firstChild;
depth = 0;
last_expanded_parent_depth = 0;
}
while (new_row) {
if (new_row.nodeType == 1) {
r = this.rows[new_row.uid];
if (r) {
if (row && (!r.depth || r.depth <= depth))
break;
if (r.parent_uid) {
p = this.rows[r.parent_uid];
if (p && p.expanded) {
if ((row && p == row) || last_expanded_parent_depth >= p.depth - 1) {
last_expanded_parent_depth = p.depth;
$(new_row).css('display', '');
r.expanded = true;
this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
}
}
else
if (row && (! p || p.depth <= depth))
break;
}
}
}
new_row = new_row.nextSibling;
}
this.triggerEvent('listupdate');
return false;
},
collapse_all: function(row)
{
var depth, new_row, r;
if (row) {
row.expanded = false;
depth = row.depth;
new_row = row.obj.nextSibling;
this.update_expando(row.uid);
this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
// don't collapse sub-root tree in multiexpand mode
if (depth && this.multiexpand)
return false;
}
else {
new_row = this.tbody.firstChild;
depth = 0;
}
while (new_row) {
if (new_row.nodeType == 1) {
if (r = this.rows[new_row.uid]) {
if (row && (!r.depth || r.depth <= depth))
break;
if (row || r.depth)
$(new_row).css('display', 'none');
if (r.has_children && r.expanded) {
r.expanded = false;
this.update_expando(r.uid, false);
this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
}
}
}
new_row = new_row.nextSibling;
}
this.triggerEvent('listupdate');
return false;
},
expand_all: function(row)
{
var depth, new_row, r;
if (row) {
row.expanded = true;
depth = row.depth;
new_row = row.obj.nextSibling;
this.update_expando(row.uid, true);
this.triggerEvent('expandcollapse', { uid:row.uid, expanded:row.expanded, obj:row.obj });
}
else {
new_row = this.tbody.firstChild;
depth = 0;
}
while (new_row) {
if (new_row.nodeType == 1) {
if (r = this.rows[new_row.uid]) {
if (row && r.depth <= depth)
break;
$(new_row).css('display', '');
if (r.has_children && !r.expanded) {
r.expanded = true;
this.update_expando(r.uid, true);
this.triggerEvent('expandcollapse', { uid:r.uid, expanded:r.expanded, obj:new_row });
}
}
}
new_row = new_row.nextSibling;
}
this.triggerEvent('listupdate');
return false;
},
update_expando: function(uid, expanded)
{
var expando = document.getElementById('rcmexpando' + uid);
if (expando)
expando.className = expanded ? 'expanded' : 'collapsed';
},
/**
* get first/next/previous/last rows that are not hidden
*/
get_next_row: function()
{
if (!this.rows)
return false;
var last_selected_row = this.rows[this.last_selected],
new_row = last_selected_row ? last_selected_row.obj.nextSibling : null;
while (new_row && (new_row.nodeType != 1 || new_row.style.display == 'none'))
new_row = new_row.nextSibling;
return new_row;
},
get_prev_row: function()
{
if (!this.rows)
return false;
var last_selected_row = this.rows[this.last_selected],
new_row = last_selected_row ? last_selected_row.obj.previousSibling : null;
while (new_row && (new_row.nodeType != 1 || new_row.style.display == 'none'))
new_row = new_row.previousSibling;
return new_row;
},
get_first_row: function()
{
if (this.rowcount) {
var i, len, rows = this.tbody.childNodes;
for (i=0, len=rows.length-1; i<len; i++)
if (rows[i].id && String(rows[i].id).match(/^rcmrow([a-z0-9\-_=\+\/]+)/i) && this.rows[RegExp.$1] != null)
return RegExp.$1;
}
return null;
},
get_last_row: function()
{
if (this.rowcount) {
var i, rows = this.tbody.childNodes;
for (i=rows.length-1; i>=0; i--)
if (rows[i].id && String(rows[i].id).match(/^rcmrow([a-z0-9\-_=\+\/]+)/i) && this.rows[RegExp.$1] != null)
return RegExp.$1;
}
return null;
},
row_tagname: function()
{
var row_tagnames = { table:'tr', ul:'li', '*':'div' };
return row_tagnames[this.tagname] || row_tagnames['*'];
},
col_tagname: function()
{
var col_tagnames = { table:'td', '*':'span' };
return col_tagnames[this.tagname] || col_tagnames['*'];
},
get_cell: function(row, index)
{
return $(this.col_tagname(), row).eq(index);
},
/**
* selects or unselects the proper row depending on the modifier key pressed
*/
select_row: function(id, mod_key, with_mouse)
{
var select_before = this.selection.join(',');
if (!this.multiselect)
mod_key = 0;
if (!this.shift_start)
this.shift_start = id
if (!mod_key) {
this.shift_start = id;
this.highlight_row(id, false);
this.multi_selecting = false;
}
else {
switch (mod_key) {
case SHIFT_KEY:
this.shift_select(id, false);
break;
case CONTROL_KEY:
if (!with_mouse)
this.highlight_row(id, true);
break;
case CONTROL_SHIFT_KEY:
this.shift_select(id, true);
break;
default:
this.highlight_row(id, false);
break;
}
this.multi_selecting = true;
}
// trigger event if selection changed
if (this.selection.join(',') != select_before)
this.triggerEvent('select');
if (this.last_selected != 0 && this.rows[this.last_selected])
$(this.rows[this.last_selected].obj).removeClass('focused');
// unselect if toggleselect is active and the same row was clicked again
if (this.toggleselect && this.last_selected == id) {
this.clear_selection();
id = null;
}
else
$(this.rows[id].obj).addClass('focused');
if (!this.selection.length)
this.shift_start = null;
this.last_selected = id;
},
/**
* Alias method for select_row
*/
select: function(id)
{
this.select_row(id, false);
this.scrollto(id);
},
/**
* Select row next to the last selected one.
* Either below or above.
*/
select_next: function()
{
var next_row = this.get_next_row(),
prev_row = this.get_prev_row(),
new_row = (next_row) ? next_row : prev_row;
if (new_row)
this.select_row(new_row.uid, false, false);
},
/**
* Select first row
*/
select_first: function(mod_key)
{
var row = this.get_first_row();
if (row) {
if (mod_key) {
this.shift_select(row, mod_key);
this.triggerEvent('select');
this.scrollto(row);
}
else {
this.select(row);
}
}
},
/**
* Select last row
*/
select_last: function(mod_key)
{
var row = this.get_last_row();
if (row) {
if (mod_key) {
this.shift_select(row, mod_key);
this.triggerEvent('select');
this.scrollto(row);
}
else {
this.select(row);
}
}
},
/**
* Add all childs of the given row to selection
*/
select_children: function(uid)
{
var i, children = this.row_children(uid), len = children.length;
for (i=0; i<len; i++)
if (!this.in_selection(children[i]))
this.select_row(children[i], CONTROL_KEY);
},
/**
* Perform selection when shift key is pressed
*/
shift_select: function(id, control)
{
if (!this.rows[this.shift_start] || !this.selection.length)
this.shift_start = id;
var n, i, j, to_row = this.rows[id],
from_rowIndex = this._rowIndex(this.rows[this.shift_start].obj),
to_rowIndex = this._rowIndex(to_row.obj);
if (!to_row.expanded && to_row.has_children)
if (to_row = this.rows[(this.row_children(id)).pop()])
to_rowIndex = this._rowIndex(to_row.obj);
i = ((from_rowIndex < to_rowIndex) ? from_rowIndex : to_rowIndex),
j = ((from_rowIndex > to_rowIndex) ? from_rowIndex : to_rowIndex);
// iterate through the entire message list
for (n in this.rows) {
if (this._rowIndex(this.rows[n].obj) >= i && this._rowIndex(this.rows[n].obj) <= j) {
if (!this.in_selection(n)) {
this.highlight_row(n, true);
}
}
else {
if (this.in_selection(n) && !control) {
this.highlight_row(n, true);
}
}
}
},
/**
* Helper method to emulate the rowIndex property of non-tr elements
*/
_rowIndex: function(obj)
{
return (obj.rowIndex !== undefined) ? obj.rowIndex : $(obj).prevAll().length;
},
/**
* Check if given id is part of the current selection
*/
in_selection: function(id)
{
for (var n in this.selection)
if (this.selection[n]==id)
return true;
return false;
},
/**
* Select each row in list
*/
select_all: function(filter)
{
if (!this.rows || !this.rows.length)
return false;
// reset but remember selection first
var n, select_before = this.selection.join(',');
this.selection = [];
for (n in this.rows) {
if (!filter || this.rows[n][filter] == true) {
this.last_selected = n;
this.highlight_row(n, true, true);
}
else {
$(this.rows[n].obj).removeClass('selected').removeClass('unfocused');
}
}
// trigger event if selection changed
if (this.selection.join(',') != select_before)
this.triggerEvent('select');
this.focus();
return true;
},
/**
* Invert selection
*/
invert_selection: function()
{
if (!this.rows || !this.rows.length)
return false;
// remember old selection
var n, select_before = this.selection.join(',');
for (n in this.rows)
this.highlight_row(n, true);
// trigger event if selection changed
if (this.selection.join(',') != select_before)
this.triggerEvent('select');
this.focus();
return true;
},
/**
* Unselect selected row(s)
*/
clear_selection: function(id)
{
var n, num_select = this.selection.length;
// one row
if (id) {
for (n in this.selection)
if (this.selection[n] == id) {
this.selection.splice(n,1);
break;
}
}
// all rows
else {
for (n in this.selection)
if (this.rows[this.selection[n]]) {
$(this.rows[this.selection[n]].obj).removeClass('selected').removeClass('unfocused');
}
this.selection = [];
}
if (num_select && !this.selection.length)
this.triggerEvent('select');
},
/**
* Getter for the selection array
*/
get_selection: function()
{
return this.selection;
},
/**
* Return the ID if only one row is selected
*/
get_single_selection: function()
{
if (this.selection.length == 1)
return this.selection[0];
else
return null;
},
/**
* Highlight/unhighlight a row
*/
highlight_row: function(id, multiple, norecur)
{
if (!this.rows[id])
return;
if (!multiple) {
if (this.selection.length > 1 || !this.in_selection(id)) {
this.clear_selection();
this.selection[0] = id;
$(this.rows[id].obj).addClass('selected');
}
}
else {
if (!this.in_selection(id)) { // select row
this.selection.push(id);
$(this.rows[id].obj).addClass('selected');
if (!norecur && !this.rows[id].expanded)
this.highlight_children(id, true);
}
else { // unselect row
var p = $.inArray(id, this.selection),
a_pre = this.selection.slice(0, p),
a_post = this.selection.slice(p+1, this.selection.length);
this.selection = a_pre.concat(a_post);
$(this.rows[id].obj).removeClass('selected').removeClass('unfocused');
if (!norecur && !this.rows[id].expanded)
this.highlight_children(id, false);
}
}
},
/**
* Highlight/unhighlight all childs of the given row
*/
highlight_children: function(id, status)
{
var i, selected,
children = this.row_children(id), len = children.length;
for (i=0; i<len; i++) {
selected = this.in_selection(children[i]);
if ((status && !selected) || (!status && selected))
this.highlight_row(children[i], true, true);
}
},
/**
* Handler for keyboard events
*/
key_press: function(e)
{
var target = e.target || {};
if (this.focused != true || target.nodeName == 'INPUT' || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
return true;
var keyCode = rcube_event.get_keycode(e),
mod_key = rcube_event.get_modifier(e);
switch (keyCode) {
case 40:
case 38:
case 63233: // "down", in safari keypress
case 63232: // "up", in safari keypress
// Stop propagation so that the browser doesn't scroll
rcube_event.cancel(e);
return this.use_arrow_key(keyCode, mod_key);
case 61:
case 107: // Plus sign on a numeric keypad (fc11 + firefox 3.5.2)
case 109:
case 32:
// Stop propagation
rcube_event.cancel(e);
var ret = this.use_plusminus_key(keyCode, mod_key);
this.key_pressed = keyCode;
this.modkey = mod_key;
this.triggerEvent('keypress');
this.modkey = 0;
return ret;
case 36: // Home
this.select_first(mod_key);
return rcube_event.cancel(e);
case 35: // End
this.select_last(mod_key);
return rcube_event.cancel(e);
case 27:
if (this.drag_active)
return this.drag_mouse_up(e);
if (this.col_drag_active) {
this.selected_column = null;
return this.column_drag_mouse_up(e);
}
return rcube_event.cancel(e);
default:
this.key_pressed = keyCode;
this.modkey = mod_key;
this.triggerEvent('keypress');
this.modkey = 0;
if (this.key_pressed == this.BACKSPACE_KEY)
return rcube_event.cancel(e);
}
return true;
},
/**
* Special handling method for arrow keys
*/
use_arrow_key: function(keyCode, mod_key)
{
var new_row;
// Safari uses the nonstandard keycodes 63232/63233 for up/down, if we're
// using the keypress event (but not the keydown or keyup event).
if (keyCode == 40 || keyCode == 63233) // down arrow key pressed
new_row = this.get_next_row();
else if (keyCode == 38 || keyCode == 63232) // up arrow key pressed
new_row = this.get_prev_row();
if (new_row) {
this.select_row(new_row.uid, mod_key, false);
this.scrollto(new_row.uid);
}
return false;
},
/**
* Special handling method for +/- keys
*/
use_plusminus_key: function(keyCode, mod_key)
{
var selected_row = this.rows[this.last_selected];
if (!selected_row)
return;
if (keyCode == 32)
keyCode = selected_row.expanded ? 109 : 61;
if (keyCode == 61 || keyCode == 107)
if (mod_key == CONTROL_KEY || this.multiexpand)
this.expand_all(selected_row);
else
this.expand(selected_row);
else
if (mod_key == CONTROL_KEY || this.multiexpand)
this.collapse_all(selected_row);
else
this.collapse(selected_row);
this.update_expando(selected_row.uid, selected_row.expanded);
return false;
},
/**
* Try to scroll the list to make the specified row visible
*/
scrollto: function(id)
{
var row = this.rows[id].obj;
if (row && this.frame) {
var scroll_to = Number(row.offsetTop);
// expand thread if target row is hidden (collapsed)
if (!scroll_to && this.rows[id].parent_uid) {
var parent = this.find_root(this.rows[id].uid);
this.expand_all(this.rows[parent]);
scroll_to = Number(row.offsetTop);
}
if (scroll_to < Number(this.frame.scrollTop))
this.frame.scrollTop = scroll_to;
else if (scroll_to + Number(row.offsetHeight) > Number(this.frame.scrollTop) + Number(this.frame.offsetHeight))
this.frame.scrollTop = (scroll_to + Number(row.offsetHeight)) - Number(this.frame.offsetHeight);
}
},
/**
* Handler for mouse move events
*/
drag_mouse_move: function(e)
{
// convert touch event
if (e.type == 'touchmove') {
if (e.changedTouches.length == 1)
e = rcube_event.touchevent(e.changedTouches[0]);
else
return rcube_event.cancel(e);
}
if (this.drag_start) {
// check mouse movement, of less than 3 pixels, don't start dragging
var m = rcube_event.get_mouse_pos(e);
if (!this.drag_mouse_start || (Math.abs(m.x - this.drag_mouse_start.x) < 3 && Math.abs(m.y - this.drag_mouse_start.y) < 3))
return false;
if (!this.draglayer)
this.draglayer = $('<div>').attr('id', 'rcmdraglayer')
.css({ position:'absolute', display:'none', 'z-index':2000 })
.appendTo(document.body);
// also select childs of (collapsed) threads for dragging
var n, uid, selection = $.merge([], this.selection);
for (n in selection) {
uid = selection[n];
if (!this.rows[uid].expanded)
this.select_children(uid);
}
// reset content
this.draglayer.html('');
// get subjects of selected messages
var i, n, obj, me;
for (n=0; n<this.selection.length; n++) {
// only show 12 lines
if (n>12) {
this.draglayer.append('...');
break;
}
me = this;
if (obj = this.rows[this.selection[n]].obj) {
$('> '+this.col_tagname(), obj).each(function(i,elem){
if (n == 0)
me.drag_start_pos = $(elem).offset();
if (me.subject_col < 0 || (me.subject_col >= 0 && me.subject_col == i)) {
var subject = $(elem).text();
if (subject) {
// remove leading spaces
subject = $.trim(subject);
// truncate line to 50 characters
subject = (subject.length > 50 ? subject.substring(0, 50) + '...' : subject);
var entry = $('<div>').text(subject);
me.draglayer.append(entry);
}
return false; // break
}
});
}
}
this.draglayer.show();
this.drag_active = true;
this.triggerEvent('dragstart');
}
if (this.drag_active && this.draglayer) {
var pos = rcube_event.get_mouse_pos(e);
this.draglayer.css({ left:(pos.x+20)+'px', top:(pos.y-5 + (bw.ie ? document.documentElement.scrollTop : 0))+'px' });
this.triggerEvent('dragmove', e?e:window.event);
}
this.drag_start = false;
return false;
},
/**
* Handler for mouse up events
*/
drag_mouse_up: function(e)
{
document.onmousemove = null;
if (e.type == 'touchend') {
if (e.changedTouches.length != 1)
return rcube_event.cancel(e);
}
if (this.draglayer && this.draglayer.is(':visible')) {
if (this.drag_start_pos)
this.draglayer.animate(this.drag_start_pos, 300, 'swing').hide(20);
else
this.draglayer.hide();
}
if (this.drag_active)
this.focus();
this.drag_active = false;
rcube_event.remove_listener({event:'mousemove', object:this, method:'drag_mouse_move'});
rcube_event.remove_listener({event:'mouseup', object:this, method:'drag_mouse_up'});
if (bw.mobile) {
rcube_event.remove_listener({event:'touchmove', object:this, method:'drag_mouse_move'});
rcube_event.remove_listener({event:'touchend', object:this, method:'drag_mouse_up'});
}
// remove temp divs
this.del_dragfix();
this.triggerEvent('dragend', e);
return rcube_event.cancel(e);
},
/**
* Handler for mouse move events for dragging list column
*/
column_drag_mouse_move: function(e)
{
if (this.drag_start) {
// check mouse movement, of less than 3 pixels, don't start dragging
var i, m = rcube_event.get_mouse_pos(e);
if (!this.drag_mouse_start || (Math.abs(m.x - this.drag_mouse_start.x) < 3 && Math.abs(m.y - this.drag_mouse_start.y) < 3))
return false;
if (!this.col_draglayer) {
var lpos = $(this.list).offset(),
cells = this.thead.rows[0].cells;
// create dragging layer
this.col_draglayer = $('<div>').attr('id', 'rcmcoldraglayer')
.css(lpos).css({ position:'absolute', 'z-index':2001,
'background-color':'white', opacity:0.75,
height: (this.frame.offsetHeight-2)+'px', width: (this.frame.offsetWidth-2)+'px' })
.appendTo(document.body)
// ... and column position indicator
.append($('<div>').attr('id', 'rcmcolumnindicator')
.css({ position:'absolute', 'border-right':'2px dotted #555',
'z-index':2002, height: (this.frame.offsetHeight-2)+'px' }));
this.cols = [];
this.list_pos = this.list_min_pos = lpos.left;
// save columns positions
for (i=0; i<cells.length; i++) {
this.cols[i] = cells[i].offsetWidth;
if (this.column_fixed !== null && i <= this.column_fixed) {
this.list_min_pos += this.cols[i];
}
}
}
this.col_draglayer.show();
this.col_drag_active = true;
this.triggerEvent('column_dragstart');
}
// set column indicator position
if (this.col_drag_active && this.col_draglayer) {
var i, cpos = 0, pos = rcube_event.get_mouse_pos(e);
for (i=0; i<this.cols.length; i++) {
if (pos.x >= this.cols[i]/2 + this.list_pos + cpos)
cpos += this.cols[i];
else
break;
}
// handle fixed columns on left
if (i == 0 && this.list_min_pos > pos.x)
cpos = this.list_min_pos - this.list_pos;
// empty list needs some assignment
else if (!this.list.rowcount && i == this.cols.length)
cpos -= 2;
$('#rcmcolumnindicator').css({ width: cpos+'px'});
this.triggerEvent('column_dragmove', e?e:window.event);
}
this.drag_start = false;
return false;
},
/**
* Handler for mouse up events for dragging list columns
*/
column_drag_mouse_up: function(e)
{
document.onmousemove = null;
if (this.col_draglayer) {
(this.col_draglayer).remove();
this.col_draglayer = null;
}
if (this.col_drag_active)
this.focus();
this.col_drag_active = false;
rcube_event.remove_listener({event:'mousemove', object:this, method:'column_drag_mouse_move'});
rcube_event.remove_listener({event:'mouseup', object:this, method:'column_drag_mouse_up'});
// remove temp divs
this.del_dragfix();
if (this.selected_column !== null && this.cols && this.cols.length) {
var i, cpos = 0, pos = rcube_event.get_mouse_pos(e);
// find destination position
for (i=0; i<this.cols.length; i++) {
if (pos.x >= this.cols[i]/2 + this.list_pos + cpos)
cpos += this.cols[i];
else
break;
}
if (i != this.selected_column && i != this.selected_column+1) {
this.column_replace(this.selected_column, i);
}
}
this.triggerEvent('column_dragend', e);
return rcube_event.cancel(e);
},
/**
* Returns IDs of all rows in a thread (except root) for specified root
*/
row_children: function(uid)
{
if (!this.rows[uid] || !this.rows[uid].has_children)
return [];
var res = [], depth = this.rows[uid].depth,
row = this.rows[uid].obj.nextSibling;
while (row) {
if (row.nodeType == 1) {
if ((r = this.rows[row.uid])) {
if (!r.depth || r.depth <= depth)
break;
res.push(r.uid);
}
}
row = row.nextSibling;
}
return res;
},
/**
* Creates a layer for drag&drop over iframes
*/
add_dragfix: function()
{
$('iframe').each(function() {
$('<div class="iframe-dragdrop-fix"></div>')
.css({background: '#fff',
width: this.offsetWidth+'px', height: this.offsetHeight+'px',
position: 'absolute', opacity: '0.001', zIndex: 1000
})
.css($(this).offset())
.appendTo(document.body);
});
},
/**
* Removes the layer for drag&drop over iframes
*/
del_dragfix: function()
{
$('div.iframe-dragdrop-fix').each(function() { this.parentNode.removeChild(this); });
},
/**
* Replaces two columns
*/
column_replace: function(from, to)
{
// only supported for <table> lists
if (!this.thead || !this.thead.rows)
return;
var len, cells = this.thead.rows[0].cells,
elem = cells[from],
before = cells[to],
td = document.createElement('td');
// replace header cells
if (before)
cells[0].parentNode.insertBefore(td, before);
else
cells[0].parentNode.appendChild(td);
cells[0].parentNode.replaceChild(elem, td);
// replace list cells
for (r=0, len=this.tbody.rows.length; r<len; r++) {
row = this.tbody.rows[r];
elem = row.cells[from];
before = row.cells[to];
td = document.createElement('td');
if (before)
row.insertBefore(td, before);
else
row.appendChild(td);
row.replaceChild(elem, td);
}
// update subject column position
if (this.subject_col == from)
this.subject_col = to > from ? to - 1 : to;
else if (this.subject_col < from && to <= this.subject_col)
this.subject_col++;
else if (this.subject_col > from && to >= this.subject_col)
this.subject_col--;
this.triggerEvent('column_replace');
}
};
rcube_list_widget.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
rcube_list_widget.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
rcube_list_widget.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;

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